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language: go
go:
- 1.6
- 1.7
- 1.8
- tip
script:
- go test -v
notifications:
webhooks:
urls:
- https://webhooks.gitter.im/e/06e3328629952dabe3e0
on_success: change # options: [always|never|change] default: always
on_failure: always # options: [always|never|change] default: always
on_start: never # options: [always|never|change] default: always

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# 1.0.1 (2017-05-31)
## Fixed
- #21: Fix generation of alphanumeric strings (thanks @dbarranco)
# 1.0.0 (2014-04-30)
- Initial release.

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GoUtils
===========
[![Stability: Maintenance](https://masterminds.github.io/stability/maintenance.svg)](https://masterminds.github.io/stability/maintenance.html)
[![GoDoc](https://godoc.org/github.com/Masterminds/goutils?status.png)](https://godoc.org/github.com/Masterminds/goutils) [![Build Status](https://travis-ci.org/Masterminds/goutils.svg?branch=master)](https://travis-ci.org/Masterminds/goutils) [![Build status](https://ci.appveyor.com/api/projects/status/sc2b1ew0m7f0aiju?svg=true)](https://ci.appveyor.com/project/mattfarina/goutils)
GoUtils provides users with utility functions to manipulate strings in various ways. It is a Go implementation of some
string manipulation libraries of Java Apache Commons. GoUtils includes the following Java Apache Commons classes:
* WordUtils
* RandomStringUtils
* StringUtils (partial implementation)
## Installation
If you have Go set up on your system, from the GOPATH directory within the command line/terminal, enter this:
go get github.com/Masterminds/goutils
If you do not have Go set up on your system, please follow the [Go installation directions from the documenation](http://golang.org/doc/install), and then follow the instructions above to install GoUtils.
## Documentation
GoUtils doc is available here: [![GoDoc](https://godoc.org/github.com/Masterminds/goutils?status.png)](https://godoc.org/github.com/Masterminds/goutils)
## Usage
The code snippets below show examples of how to use GoUtils. Some functions return errors while others do not. The first instance below, which does not return an error, is the `Initials` function (located within the `wordutils.go` file).
package main
import (
"fmt"
"github.com/Masterminds/goutils"
)
func main() {
// EXAMPLE 1: A goutils function which returns no errors
fmt.Println (goutils.Initials("John Doe Foo")) // Prints out "JDF"
}
Some functions return errors mainly due to illegal arguements used as parameters. The code example below illustrates how to deal with function that returns an error. In this instance, the function is the `Random` function (located within the `randomstringutils.go` file).
package main
import (
"fmt"
"github.com/Masterminds/goutils"
)
func main() {
// EXAMPLE 2: A goutils function which returns an error
rand1, err1 := goutils.Random (-1, 0, 0, true, true)
if err1 != nil {
fmt.Println(err1) // Prints out error message because -1 was entered as the first parameter in goutils.Random(...)
} else {
fmt.Println(rand1)
}
}
## License
GoUtils is licensed under the Apache License, Version 2.0. Please check the LICENSE.txt file or visit http://www.apache.org/licenses/LICENSE-2.0 for a copy of the license.
## Issue Reporting
Make suggestions or report issues using the Git issue tracker: https://github.com/Masterminds/goutils/issues
## Website
* [GoUtils webpage](http://Masterminds.github.io/goutils/)

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version: build-{build}.{branch}
clone_folder: C:\gopath\src\github.com\Masterminds\goutils
shallow_clone: true
environment:
GOPATH: C:\gopath
platform:
- x64
build: off
install:
- go version
- go env
test_script:
- go test -v
deploy: off

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/*
Copyright 2014 Alexander Okoli
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package goutils
import (
"crypto/rand"
"fmt"
"math"
"math/big"
"regexp"
"unicode"
)
/*
CryptoRandomNonAlphaNumeric creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of all characters (ASCII/Unicode values between 0 to 2,147,483,647 (math.MaxInt32)).
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, CryptoRandom(...)
*/
func CryptoRandomNonAlphaNumeric(count int) (string, error) {
return CryptoRandomAlphaNumericCustom(count, false, false)
}
/*
CryptoRandomAscii creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of characters whose ASCII value is between 32 and 126 (inclusive).
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, CryptoRandom(...)
*/
func CryptoRandomAscii(count int) (string, error) {
return CryptoRandom(count, 32, 127, false, false)
}
/*
CryptoRandomNumeric creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of numeric characters.
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, CryptoRandom(...)
*/
func CryptoRandomNumeric(count int) (string, error) {
return CryptoRandom(count, 0, 0, false, true)
}
/*
CryptoRandomAlphabetic creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of alpha-numeric characters as indicated by the arguments.
Parameters:
count - the length of random string to create
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, CryptoRandom(...)
*/
func CryptoRandomAlphabetic(count int) (string, error) {
return CryptoRandom(count, 0, 0, true, false)
}
/*
CryptoRandomAlphaNumeric creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of alpha-numeric characters.
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, CryptoRandom(...)
*/
func CryptoRandomAlphaNumeric(count int) (string, error) {
if count == 0 {
return "", nil
}
RandomString, err := CryptoRandom(count, 0, 0, true, true)
if err != nil {
return "", fmt.Errorf("Error: %s", err)
}
match, err := regexp.MatchString("([0-9]+)", RandomString)
if err != nil {
panic(err)
}
if !match {
//Get the position between 0 and the length of the string-1 to insert a random number
position := getCryptoRandomInt(count)
//Insert a random number between [0-9] in the position
RandomString = RandomString[:position] + string('0' + getCryptoRandomInt(10)) + RandomString[position + 1:]
return RandomString, err
}
return RandomString, err
}
/*
CryptoRandomAlphaNumericCustom creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of alpha-numeric characters as indicated by the arguments.
Parameters:
count - the length of random string to create
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, CryptoRandom(...)
*/
func CryptoRandomAlphaNumericCustom(count int, letters bool, numbers bool) (string, error) {
return CryptoRandom(count, 0, 0, letters, numbers)
}
/*
CryptoRandom creates a random string based on a variety of options, using using golang's crypto/rand source of randomness.
If the parameters start and end are both 0, start and end are set to ' ' and 'z', the ASCII printable characters, will be used,
unless letters and numbers are both false, in which case, start and end are set to 0 and math.MaxInt32, respectively.
If chars is not nil, characters stored in chars that are between start and end are chosen.
Parameters:
count - the length of random string to create
start - the position in set of chars (ASCII/Unicode int) to start at
end - the position in set of chars (ASCII/Unicode int) to end before
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
chars - the set of chars to choose randoms from. If nil, then it will use the set of all chars.
Returns:
string - the random string
error - an error stemming from invalid parameters: if count < 0; or the provided chars array is empty; or end <= start; or end > len(chars)
*/
func CryptoRandom(count int, start int, end int, letters bool, numbers bool, chars ...rune) (string, error) {
if count == 0 {
return "", nil
} else if count < 0 {
err := fmt.Errorf("randomstringutils illegal argument: Requested random string length %v is less than 0.", count) // equiv to err := errors.New("...")
return "", err
}
if chars != nil && len(chars) == 0 {
err := fmt.Errorf("randomstringutils illegal argument: The chars array must not be empty")
return "", err
}
if start == 0 && end == 0 {
if chars != nil {
end = len(chars)
} else {
if !letters && !numbers {
end = math.MaxInt32
} else {
end = 'z' + 1
start = ' '
}
}
} else {
if end <= start {
err := fmt.Errorf("randomstringutils illegal argument: Parameter end (%v) must be greater than start (%v)", end, start)
return "", err
}
if chars != nil && end > len(chars) {
err := fmt.Errorf("randomstringutils illegal argument: Parameter end (%v) cannot be greater than len(chars) (%v)", end, len(chars))
return "", err
}
}
buffer := make([]rune, count)
gap := end - start
// high-surrogates range, (\uD800-\uDBFF) = 55296 - 56319
// low-surrogates range, (\uDC00-\uDFFF) = 56320 - 57343
for count != 0 {
count--
var ch rune
if chars == nil {
ch = rune(getCryptoRandomInt(gap) + int64(start))
} else {
ch = chars[getCryptoRandomInt(gap) + int64(start)]
}
if letters && unicode.IsLetter(ch) || numbers && unicode.IsDigit(ch) || !letters && !numbers {
if ch >= 56320 && ch <= 57343 { // low surrogate range
if count == 0 {
count++
} else {
// Insert low surrogate
buffer[count] = ch
count--
// Insert high surrogate
buffer[count] = rune(55296 + getCryptoRandomInt(128))
}
} else if ch >= 55296 && ch <= 56191 { // High surrogates range (Partial)
if count == 0 {
count++
} else {
// Insert low surrogate
buffer[count] = rune(56320 + getCryptoRandomInt(128))
count--
// Insert high surrogate
buffer[count] = ch
}
} else if ch >= 56192 && ch <= 56319 {
// private high surrogate, skip it
count++
} else {
// not one of the surrogates*
buffer[count] = ch
}
} else {
count++
}
}
return string(buffer), nil
}
func getCryptoRandomInt(count int) int64 {
nBig, err := rand.Int(rand.Reader, big.NewInt(int64(count)))
if err != nil {
panic(err)
}
return nBig.Int64()
}

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/*
Copyright 2014 Alexander Okoli
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package goutils
import (
"fmt"
"math"
"math/rand"
"regexp"
"time"
"unicode"
)
// RANDOM provides the time-based seed used to generate random numbers
var RANDOM = rand.New(rand.NewSource(time.Now().UnixNano()))
/*
RandomNonAlphaNumeric creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of all characters (ASCII/Unicode values between 0 to 2,147,483,647 (math.MaxInt32)).
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func RandomNonAlphaNumeric(count int) (string, error) {
return RandomAlphaNumericCustom(count, false, false)
}
/*
RandomAscii creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of characters whose ASCII value is between 32 and 126 (inclusive).
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func RandomAscii(count int) (string, error) {
return Random(count, 32, 127, false, false)
}
/*
RandomNumeric creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of numeric characters.
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func RandomNumeric(count int) (string, error) {
return Random(count, 0, 0, false, true)
}
/*
RandomAlphabetic creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of alpha-numeric characters as indicated by the arguments.
Parameters:
count - the length of random string to create
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func RandomAlphabetic(count int) (string, error) {
return Random(count, 0, 0, true, false)
}
/*
RandomAlphaNumeric creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of alpha-numeric characters.
Parameter:
count - the length of random string to create
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func RandomAlphaNumeric(count int) (string, error) {
RandomString, err := Random(count, 0, 0, true, true)
if err != nil {
return "", fmt.Errorf("Error: %s", err)
}
match, err := regexp.MatchString("([0-9]+)", RandomString)
if err != nil {
panic(err)
}
if !match {
//Get the position between 0 and the length of the string-1 to insert a random number
position := rand.Intn(count)
//Insert a random number between [0-9] in the position
RandomString = RandomString[:position] + string('0'+rand.Intn(10)) + RandomString[position+1:]
return RandomString, err
}
return RandomString, err
}
/*
RandomAlphaNumericCustom creates a random string whose length is the number of characters specified.
Characters will be chosen from the set of alpha-numeric characters as indicated by the arguments.
Parameters:
count - the length of random string to create
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func RandomAlphaNumericCustom(count int, letters bool, numbers bool) (string, error) {
return Random(count, 0, 0, letters, numbers)
}
/*
Random creates a random string based on a variety of options, using default source of randomness.
This method has exactly the same semantics as RandomSeed(int, int, int, bool, bool, []char, *rand.Rand), but
instead of using an externally supplied source of randomness, it uses the internal *rand.Rand instance.
Parameters:
count - the length of random string to create
start - the position in set of chars (ASCII/Unicode int) to start at
end - the position in set of chars (ASCII/Unicode int) to end before
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
chars - the set of chars to choose randoms from. If nil, then it will use the set of all chars.
Returns:
string - the random string
error - an error stemming from an invalid parameter within underlying function, RandomSeed(...)
*/
func Random(count int, start int, end int, letters bool, numbers bool, chars ...rune) (string, error) {
return RandomSeed(count, start, end, letters, numbers, chars, RANDOM)
}
/*
RandomSeed creates a random string based on a variety of options, using supplied source of randomness.
If the parameters start and end are both 0, start and end are set to ' ' and 'z', the ASCII printable characters, will be used,
unless letters and numbers are both false, in which case, start and end are set to 0 and math.MaxInt32, respectively.
If chars is not nil, characters stored in chars that are between start and end are chosen.
This method accepts a user-supplied *rand.Rand instance to use as a source of randomness. By seeding a single *rand.Rand instance
with a fixed seed and using it for each call, the same random sequence of strings can be generated repeatedly and predictably.
Parameters:
count - the length of random string to create
start - the position in set of chars (ASCII/Unicode decimals) to start at
end - the position in set of chars (ASCII/Unicode decimals) to end before
letters - if true, generated string may include alphabetic characters
numbers - if true, generated string may include numeric characters
chars - the set of chars to choose randoms from. If nil, then it will use the set of all chars.
random - a source of randomness.
Returns:
string - the random string
error - an error stemming from invalid parameters: if count < 0; or the provided chars array is empty; or end <= start; or end > len(chars)
*/
func RandomSeed(count int, start int, end int, letters bool, numbers bool, chars []rune, random *rand.Rand) (string, error) {
if count == 0 {
return "", nil
} else if count < 0 {
err := fmt.Errorf("randomstringutils illegal argument: Requested random string length %v is less than 0.", count) // equiv to err := errors.New("...")
return "", err
}
if chars != nil && len(chars) == 0 {
err := fmt.Errorf("randomstringutils illegal argument: The chars array must not be empty")
return "", err
}
if start == 0 && end == 0 {
if chars != nil {
end = len(chars)
} else {
if !letters && !numbers {
end = math.MaxInt32
} else {
end = 'z' + 1
start = ' '
}
}
} else {
if end <= start {
err := fmt.Errorf("randomstringutils illegal argument: Parameter end (%v) must be greater than start (%v)", end, start)
return "", err
}
if chars != nil && end > len(chars) {
err := fmt.Errorf("randomstringutils illegal argument: Parameter end (%v) cannot be greater than len(chars) (%v)", end, len(chars))
return "", err
}
}
buffer := make([]rune, count)
gap := end - start
// high-surrogates range, (\uD800-\uDBFF) = 55296 - 56319
// low-surrogates range, (\uDC00-\uDFFF) = 56320 - 57343
for count != 0 {
count--
var ch rune
if chars == nil {
ch = rune(random.Intn(gap) + start)
} else {
ch = chars[random.Intn(gap)+start]
}
if letters && unicode.IsLetter(ch) || numbers && unicode.IsDigit(ch) || !letters && !numbers {
if ch >= 56320 && ch <= 57343 { // low surrogate range
if count == 0 {
count++
} else {
// Insert low surrogate
buffer[count] = ch
count--
// Insert high surrogate
buffer[count] = rune(55296 + random.Intn(128))
}
} else if ch >= 55296 && ch <= 56191 { // High surrogates range (Partial)
if count == 0 {
count++
} else {
// Insert low surrogate
buffer[count] = rune(56320 + random.Intn(128))
count--
// Insert high surrogate
buffer[count] = ch
}
} else if ch >= 56192 && ch <= 56319 {
// private high surrogate, skip it
count++
} else {
// not one of the surrogates*
buffer[count] = ch
}
} else {
count++
}
}
return string(buffer), nil
}

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/*
Copyright 2014 Alexander Okoli
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package goutils
import (
"bytes"
"fmt"
"strings"
"unicode"
)
// Typically returned by functions where a searched item cannot be found
const INDEX_NOT_FOUND = -1
/*
Abbreviate abbreviates a string using ellipses. This will turn the string "Now is the time for all good men" into "Now is the time for..."
Specifically, the algorithm is as follows:
- If str is less than maxWidth characters long, return it.
- Else abbreviate it to (str[0:maxWidth - 3] + "...").
- If maxWidth is less than 4, return an illegal argument error.
- In no case will it return a string of length greater than maxWidth.
Parameters:
str - the string to check
maxWidth - maximum length of result string, must be at least 4
Returns:
string - abbreviated string
error - if the width is too small
*/
func Abbreviate(str string, maxWidth int) (string, error) {
return AbbreviateFull(str, 0, maxWidth)
}
/*
AbbreviateFull abbreviates a string using ellipses. This will turn the string "Now is the time for all good men" into "...is the time for..."
This function works like Abbreviate(string, int), but allows you to specify a "left edge" offset. Note that this left edge is not
necessarily going to be the leftmost character in the result, or the first character following the ellipses, but it will appear
somewhere in the result.
In no case will it return a string of length greater than maxWidth.
Parameters:
str - the string to check
offset - left edge of source string
maxWidth - maximum length of result string, must be at least 4
Returns:
string - abbreviated string
error - if the width is too small
*/
func AbbreviateFull(str string, offset int, maxWidth int) (string, error) {
if str == "" {
return "", nil
}
if maxWidth < 4 {
err := fmt.Errorf("stringutils illegal argument: Minimum abbreviation width is 4")
return "", err
}
if len(str) <= maxWidth {
return str, nil
}
if offset > len(str) {
offset = len(str)
}
if len(str)-offset < (maxWidth - 3) { // 15 - 5 < 10 - 3 = 10 < 7
offset = len(str) - (maxWidth - 3)
}
abrevMarker := "..."
if offset <= 4 {
return str[0:maxWidth-3] + abrevMarker, nil // str.substring(0, maxWidth - 3) + abrevMarker;
}
if maxWidth < 7 {
err := fmt.Errorf("stringutils illegal argument: Minimum abbreviation width with offset is 7")
return "", err
}
if (offset + maxWidth - 3) < len(str) { // 5 + (10-3) < 15 = 12 < 15
abrevStr, _ := Abbreviate(str[offset:len(str)], (maxWidth - 3))
return abrevMarker + abrevStr, nil // abrevMarker + abbreviate(str.substring(offset), maxWidth - 3);
}
return abrevMarker + str[(len(str)-(maxWidth-3)):len(str)], nil // abrevMarker + str.substring(str.length() - (maxWidth - 3));
}
/*
DeleteWhiteSpace deletes all whitespaces from a string as defined by unicode.IsSpace(rune).
It returns the string without whitespaces.
Parameter:
str - the string to delete whitespace from, may be nil
Returns:
the string without whitespaces
*/
func DeleteWhiteSpace(str string) string {
if str == "" {
return str
}
sz := len(str)
var chs bytes.Buffer
count := 0
for i := 0; i < sz; i++ {
ch := rune(str[i])
if !unicode.IsSpace(ch) {
chs.WriteRune(ch)
count++
}
}
if count == sz {
return str
}
return chs.String()
}
/*
IndexOfDifference compares two strings, and returns the index at which the strings begin to differ.
Parameters:
str1 - the first string
str2 - the second string
Returns:
the index where str1 and str2 begin to differ; -1 if they are equal
*/
func IndexOfDifference(str1 string, str2 string) int {
if str1 == str2 {
return INDEX_NOT_FOUND
}
if IsEmpty(str1) || IsEmpty(str2) {
return 0
}
var i int
for i = 0; i < len(str1) && i < len(str2); i++ {
if rune(str1[i]) != rune(str2[i]) {
break
}
}
if i < len(str2) || i < len(str1) {
return i
}
return INDEX_NOT_FOUND
}
/*
IsBlank checks if a string is whitespace or empty (""). Observe the following behavior:
goutils.IsBlank("") = true
goutils.IsBlank(" ") = true
goutils.IsBlank("bob") = false
goutils.IsBlank(" bob ") = false
Parameter:
str - the string to check
Returns:
true - if the string is whitespace or empty ("")
*/
func IsBlank(str string) bool {
strLen := len(str)
if str == "" || strLen == 0 {
return true
}
for i := 0; i < strLen; i++ {
if unicode.IsSpace(rune(str[i])) == false {
return false
}
}
return true
}
/*
IndexOf returns the index of the first instance of sub in str, with the search beginning from the
index start point specified. -1 is returned if sub is not present in str.
An empty string ("") will return -1 (INDEX_NOT_FOUND). A negative start position is treated as zero.
A start position greater than the string length returns -1.
Parameters:
str - the string to check
sub - the substring to find
start - the start position; negative treated as zero
Returns:
the first index where the sub string was found (always >= start)
*/
func IndexOf(str string, sub string, start int) int {
if start < 0 {
start = 0
}
if len(str) < start {
return INDEX_NOT_FOUND
}
if IsEmpty(str) || IsEmpty(sub) {
return INDEX_NOT_FOUND
}
partialIndex := strings.Index(str[start:len(str)], sub)
if partialIndex == -1 {
return INDEX_NOT_FOUND
}
return partialIndex + start
}
// IsEmpty checks if a string is empty (""). Returns true if empty, and false otherwise.
func IsEmpty(str string) bool {
return len(str) == 0
}

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/*
Copyright 2014 Alexander Okoli
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Package goutils provides utility functions to manipulate strings in various ways.
The code snippets below show examples of how to use goutils. Some functions return
errors while others do not, so usage would vary as a result.
Example:
package main
import (
"fmt"
"github.com/aokoli/goutils"
)
func main() {
// EXAMPLE 1: A goutils function which returns no errors
fmt.Println (goutils.Initials("John Doe Foo")) // Prints out "JDF"
// EXAMPLE 2: A goutils function which returns an error
rand1, err1 := goutils.Random (-1, 0, 0, true, true)
if err1 != nil {
fmt.Println(err1) // Prints out error message because -1 was entered as the first parameter in goutils.Random(...)
} else {
fmt.Println(rand1)
}
}
*/
package goutils
import (
"bytes"
"strings"
"unicode"
)
// VERSION indicates the current version of goutils
const VERSION = "1.0.0"
/*
Wrap wraps a single line of text, identifying words by ' '.
New lines will be separated by '\n'. Very long words, such as URLs will not be wrapped.
Leading spaces on a new line are stripped. Trailing spaces are not stripped.
Parameters:
str - the string to be word wrapped
wrapLength - the column (a column can fit only one character) to wrap the words at, less than 1 is treated as 1
Returns:
a line with newlines inserted
*/
func Wrap(str string, wrapLength int) string {
return WrapCustom(str, wrapLength, "", false)
}
/*
WrapCustom wraps a single line of text, identifying words by ' '.
Leading spaces on a new line are stripped. Trailing spaces are not stripped.
Parameters:
str - the string to be word wrapped
wrapLength - the column number (a column can fit only one character) to wrap the words at, less than 1 is treated as 1
newLineStr - the string to insert for a new line, "" uses '\n'
wrapLongWords - true if long words (such as URLs) should be wrapped
Returns:
a line with newlines inserted
*/
func WrapCustom(str string, wrapLength int, newLineStr string, wrapLongWords bool) string {
if str == "" {
return ""
}
if newLineStr == "" {
newLineStr = "\n" // TODO Assumes "\n" is seperator. Explore SystemUtils.LINE_SEPARATOR from Apache Commons
}
if wrapLength < 1 {
wrapLength = 1
}
inputLineLength := len(str)
offset := 0
var wrappedLine bytes.Buffer
for inputLineLength-offset > wrapLength {
if rune(str[offset]) == ' ' {
offset++
continue
}
end := wrapLength + offset + 1
spaceToWrapAt := strings.LastIndex(str[offset:end], " ") + offset
if spaceToWrapAt >= offset {
// normal word (not longer than wrapLength)
wrappedLine.WriteString(str[offset:spaceToWrapAt])
wrappedLine.WriteString(newLineStr)
offset = spaceToWrapAt + 1
} else {
// long word or URL
if wrapLongWords {
end := wrapLength + offset
// long words are wrapped one line at a time
wrappedLine.WriteString(str[offset:end])
wrappedLine.WriteString(newLineStr)
offset += wrapLength
} else {
// long words aren't wrapped, just extended beyond limit
end := wrapLength + offset
index := strings.IndexRune(str[end:len(str)], ' ')
if index == -1 {
wrappedLine.WriteString(str[offset:len(str)])
offset = inputLineLength
} else {
spaceToWrapAt = index + end
wrappedLine.WriteString(str[offset:spaceToWrapAt])
wrappedLine.WriteString(newLineStr)
offset = spaceToWrapAt + 1
}
}
}
}
wrappedLine.WriteString(str[offset:len(str)])
return wrappedLine.String()
}
/*
Capitalize capitalizes all the delimiter separated words in a string. Only the first letter of each word is changed.
To convert the rest of each word to lowercase at the same time, use CapitalizeFully(str string, delimiters ...rune).
The delimiters represent a set of characters understood to separate words. The first string character
and the first non-delimiter character after a delimiter will be capitalized. A "" input string returns "".
Capitalization uses the Unicode title case, normally equivalent to upper case.
Parameters:
str - the string to capitalize
delimiters - set of characters to determine capitalization, exclusion of this parameter means whitespace would be delimeter
Returns:
capitalized string
*/
func Capitalize(str string, delimiters ...rune) string {
var delimLen int
if delimiters == nil {
delimLen = -1
} else {
delimLen = len(delimiters)
}
if str == "" || delimLen == 0 {
return str
}
buffer := []rune(str)
capitalizeNext := true
for i := 0; i < len(buffer); i++ {
ch := buffer[i]
if isDelimiter(ch, delimiters...) {
capitalizeNext = true
} else if capitalizeNext {
buffer[i] = unicode.ToTitle(ch)
capitalizeNext = false
}
}
return string(buffer)
}
/*
CapitalizeFully converts all the delimiter separated words in a string into capitalized words, that is each word is made up of a
titlecase character and then a series of lowercase characters. The delimiters represent a set of characters understood
to separate words. The first string character and the first non-delimiter character after a delimiter will be capitalized.
Capitalization uses the Unicode title case, normally equivalent to upper case.
Parameters:
str - the string to capitalize fully
delimiters - set of characters to determine capitalization, exclusion of this parameter means whitespace would be delimeter
Returns:
capitalized string
*/
func CapitalizeFully(str string, delimiters ...rune) string {
var delimLen int
if delimiters == nil {
delimLen = -1
} else {
delimLen = len(delimiters)
}
if str == "" || delimLen == 0 {
return str
}
str = strings.ToLower(str)
return Capitalize(str, delimiters...)
}
/*
Uncapitalize uncapitalizes all the whitespace separated words in a string. Only the first letter of each word is changed.
The delimiters represent a set of characters understood to separate words. The first string character and the first non-delimiter
character after a delimiter will be uncapitalized. Whitespace is defined by unicode.IsSpace(char).
Parameters:
str - the string to uncapitalize fully
delimiters - set of characters to determine capitalization, exclusion of this parameter means whitespace would be delimeter
Returns:
uncapitalized string
*/
func Uncapitalize(str string, delimiters ...rune) string {
var delimLen int
if delimiters == nil {
delimLen = -1
} else {
delimLen = len(delimiters)
}
if str == "" || delimLen == 0 {
return str
}
buffer := []rune(str)
uncapitalizeNext := true // TODO Always makes capitalize/un apply to first char.
for i := 0; i < len(buffer); i++ {
ch := buffer[i]
if isDelimiter(ch, delimiters...) {
uncapitalizeNext = true
} else if uncapitalizeNext {
buffer[i] = unicode.ToLower(ch)
uncapitalizeNext = false
}
}
return string(buffer)
}
/*
SwapCase swaps the case of a string using a word based algorithm.
Conversion algorithm:
Upper case character converts to Lower case
Title case character converts to Lower case
Lower case character after Whitespace or at start converts to Title case
Other Lower case character converts to Upper case
Whitespace is defined by unicode.IsSpace(char).
Parameters:
str - the string to swap case
Returns:
the changed string
*/
func SwapCase(str string) string {
if str == "" {
return str
}
buffer := []rune(str)
whitespace := true
for i := 0; i < len(buffer); i++ {
ch := buffer[i]
if unicode.IsUpper(ch) {
buffer[i] = unicode.ToLower(ch)
whitespace = false
} else if unicode.IsTitle(ch) {
buffer[i] = unicode.ToLower(ch)
whitespace = false
} else if unicode.IsLower(ch) {
if whitespace {
buffer[i] = unicode.ToTitle(ch)
whitespace = false
} else {
buffer[i] = unicode.ToUpper(ch)
}
} else {
whitespace = unicode.IsSpace(ch)
}
}
return string(buffer)
}
/*
Initials extracts the initial letters from each word in the string. The first letter of the string and all first
letters after the defined delimiters are returned as a new string. Their case is not changed. If the delimiters
parameter is excluded, then Whitespace is used. Whitespace is defined by unicode.IsSpacea(char). An empty delimiter array returns an empty string.
Parameters:
str - the string to get initials from
delimiters - set of characters to determine words, exclusion of this parameter means whitespace would be delimeter
Returns:
string of initial letters
*/
func Initials(str string, delimiters ...rune) string {
if str == "" {
return str
}
if delimiters != nil && len(delimiters) == 0 {
return ""
}
strLen := len(str)
var buf bytes.Buffer
lastWasGap := true
for i := 0; i < strLen; i++ {
ch := rune(str[i])
if isDelimiter(ch, delimiters...) {
lastWasGap = true
} else if lastWasGap {
buf.WriteRune(ch)
lastWasGap = false
}
}
return buf.String()
}
// private function (lower case func name)
func isDelimiter(ch rune, delimiters ...rune) bool {
if delimiters == nil {
return unicode.IsSpace(ch)
}
for _, delimiter := range delimiters {
if ch == delimiter {
return true
}
}
return false
}

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language: go
go:
- 1.6.x
- 1.7.x
- 1.8.x
- 1.9.x
- 1.10.x
- 1.11.x
- 1.12.x
- tip
# Setting sudo access to false will let Travis CI use containers rather than
# VMs to run the tests. For more details see:
# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
sudo: false
script:
- make setup
- make test
notifications:
webhooks:
urls:
- https://webhooks.gitter.im/e/06e3328629952dabe3e0
on_success: change # options: [always|never|change] default: always
on_failure: always # options: [always|never|change] default: always
on_start: never # options: [always|never|change] default: always

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# 1.5.0 (2019-09-11)
## Added
- #103: Add basic fuzzing for `NewVersion()` (thanks @jesse-c)
## Changed
- #82: Clarify wildcard meaning in range constraints and update tests for it (thanks @greysteil)
- #83: Clarify caret operator range for pre-1.0.0 dependencies (thanks @greysteil)
- #72: Adding docs comment pointing to vert for a cli
- #71: Update the docs on pre-release comparator handling
- #89: Test with new go versions (thanks @thedevsaddam)
- #87: Added $ to ValidPrerelease for better validation (thanks @jeremycarroll)
## Fixed
- #78: Fix unchecked error in example code (thanks @ravron)
- #70: Fix the handling of pre-releases and the 0.0.0 release edge case
- #97: Fixed copyright file for proper display on GitHub
- #107: Fix handling prerelease when sorting alphanum and num
- #109: Fixed where Validate sometimes returns wrong message on error
# 1.4.2 (2018-04-10)
## Changed
- #72: Updated the docs to point to vert for a console appliaction
- #71: Update the docs on pre-release comparator handling
## Fixed
- #70: Fix the handling of pre-releases and the 0.0.0 release edge case
# 1.4.1 (2018-04-02)
## Fixed
- Fixed #64: Fix pre-release precedence issue (thanks @uudashr)
# 1.4.0 (2017-10-04)
## Changed
- #61: Update NewVersion to parse ints with a 64bit int size (thanks @zknill)
# 1.3.1 (2017-07-10)
## Fixed
- Fixed #57: number comparisons in prerelease sometimes inaccurate
# 1.3.0 (2017-05-02)
## Added
- #45: Added json (un)marshaling support (thanks @mh-cbon)
- Stability marker. See https://masterminds.github.io/stability/
## Fixed
- #51: Fix handling of single digit tilde constraint (thanks @dgodd)
## Changed
- #55: The godoc icon moved from png to svg
# 1.2.3 (2017-04-03)
## Fixed
- #46: Fixed 0.x.x and 0.0.x in constraints being treated as *
# Release 1.2.2 (2016-12-13)
## Fixed
- #34: Fixed issue where hyphen range was not working with pre-release parsing.
# Release 1.2.1 (2016-11-28)
## Fixed
- #24: Fixed edge case issue where constraint "> 0" does not handle "0.0.1-alpha"
properly.
# Release 1.2.0 (2016-11-04)
## Added
- #20: Added MustParse function for versions (thanks @adamreese)
- #15: Added increment methods on versions (thanks @mh-cbon)
## Fixed
- Issue #21: Per the SemVer spec (section 9) a pre-release is unstable and
might not satisfy the intended compatibility. The change here ignores pre-releases
on constraint checks (e.g., ~ or ^) when a pre-release is not part of the
constraint. For example, `^1.2.3` will ignore pre-releases while
`^1.2.3-alpha` will include them.
# Release 1.1.1 (2016-06-30)
## Changed
- Issue #9: Speed up version comparison performance (thanks @sdboyer)
- Issue #8: Added benchmarks (thanks @sdboyer)
- Updated Go Report Card URL to new location
- Updated Readme to add code snippet formatting (thanks @mh-cbon)
- Updating tagging to v[SemVer] structure for compatibility with other tools.
# Release 1.1.0 (2016-03-11)
- Issue #2: Implemented validation to provide reasons a versions failed a
constraint.
# Release 1.0.1 (2015-12-31)
- Fixed #1: * constraint failing on valid versions.
# Release 1.0.0 (2015-10-20)
- Initial release

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Copyright (C) 2014-2019, Matt Butcher and Matt Farina
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

36
vendor/github.com/Masterminds/semver/Makefile generated vendored Normal file
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.PHONY: setup
setup:
go get -u gopkg.in/alecthomas/gometalinter.v1
gometalinter.v1 --install
.PHONY: test
test: validate lint
@echo "==> Running tests"
go test -v
.PHONY: validate
validate:
@echo "==> Running static validations"
@gometalinter.v1 \
--disable-all \
--enable deadcode \
--severity deadcode:error \
--enable gofmt \
--enable gosimple \
--enable ineffassign \
--enable misspell \
--enable vet \
--tests \
--vendor \
--deadline 60s \
./... || exit_code=1
.PHONY: lint
lint:
@echo "==> Running linters"
@gometalinter.v1 \
--disable-all \
--enable golint \
--vendor \
--deadline 60s \
./... || :

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# SemVer
The `semver` package provides the ability to work with [Semantic Versions](http://semver.org) in Go. Specifically it provides the ability to:
* Parse semantic versions
* Sort semantic versions
* Check if a semantic version fits within a set of constraints
* Optionally work with a `v` prefix
[![Stability:
Active](https://masterminds.github.io/stability/active.svg)](https://masterminds.github.io/stability/active.html)
[![Build Status](https://travis-ci.org/Masterminds/semver.svg)](https://travis-ci.org/Masterminds/semver) [![Build status](https://ci.appveyor.com/api/projects/status/jfk66lib7hb985k8/branch/master?svg=true&passingText=windows%20build%20passing&failingText=windows%20build%20failing)](https://ci.appveyor.com/project/mattfarina/semver/branch/master) [![GoDoc](https://godoc.org/github.com/Masterminds/semver?status.svg)](https://godoc.org/github.com/Masterminds/semver) [![Go Report Card](https://goreportcard.com/badge/github.com/Masterminds/semver)](https://goreportcard.com/report/github.com/Masterminds/semver)
If you are looking for a command line tool for version comparisons please see
[vert](https://github.com/Masterminds/vert) which uses this library.
## Parsing Semantic Versions
To parse a semantic version use the `NewVersion` function. For example,
```go
v, err := semver.NewVersion("1.2.3-beta.1+build345")
```
If there is an error the version wasn't parseable. The version object has methods
to get the parts of the version, compare it to other versions, convert the
version back into a string, and get the original string. For more details
please see the [documentation](https://godoc.org/github.com/Masterminds/semver).
## Sorting Semantic Versions
A set of versions can be sorted using the [`sort`](https://golang.org/pkg/sort/)
package from the standard library. For example,
```go
raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
vs := make([]*semver.Version, len(raw))
for i, r := range raw {
v, err := semver.NewVersion(r)
if err != nil {
t.Errorf("Error parsing version: %s", err)
}
vs[i] = v
}
sort.Sort(semver.Collection(vs))
```
## Checking Version Constraints
Checking a version against version constraints is one of the most featureful
parts of the package.
```go
c, err := semver.NewConstraint(">= 1.2.3")
if err != nil {
// Handle constraint not being parseable.
}
v, _ := semver.NewVersion("1.3")
if err != nil {
// Handle version not being parseable.
}
// Check if the version meets the constraints. The a variable will be true.
a := c.Check(v)
```
## Basic Comparisons
There are two elements to the comparisons. First, a comparison string is a list
of comma separated and comparisons. These are then separated by || separated or
comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
greater than or equal to 4.2.3.
The basic comparisons are:
* `=`: equal (aliased to no operator)
* `!=`: not equal
* `>`: greater than
* `<`: less than
* `>=`: greater than or equal to
* `<=`: less than or equal to
## Working With Pre-release Versions
Pre-releases, for those not familiar with them, are used for software releases
prior to stable or generally available releases. Examples of pre-releases include
development, alpha, beta, and release candidate releases. A pre-release may be
a version such as `1.2.3-beta.1` while the stable release would be `1.2.3`. In the
order of precidence, pre-releases come before their associated releases. In this
example `1.2.3-beta.1 < 1.2.3`.
According to the Semantic Version specification pre-releases may not be
API compliant with their release counterpart. It says,
> A pre-release version indicates that the version is unstable and might not satisfy the intended compatibility requirements as denoted by its associated normal version.
SemVer comparisons without a pre-release comparator will skip pre-release versions.
For example, `>=1.2.3` will skip pre-releases when looking at a list of releases
while `>=1.2.3-0` will evaluate and find pre-releases.
The reason for the `0` as a pre-release version in the example comparison is
because pre-releases can only contain ASCII alphanumerics and hyphens (along with
`.` separators), per the spec. Sorting happens in ASCII sort order, again per the spec. The lowest character is a `0` in ASCII sort order (see an [ASCII Table](http://www.asciitable.com/))
Understanding ASCII sort ordering is important because A-Z comes before a-z. That
means `>=1.2.3-BETA` will return `1.2.3-alpha`. What you might expect from case
sensitivity doesn't apply here. This is due to ASCII sort ordering which is what
the spec specifies.
## Hyphen Range Comparisons
There are multiple methods to handle ranges and the first is hyphens ranges.
These look like:
* `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
* `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
## Wildcards In Comparisons
The `x`, `X`, and `*` characters can be used as a wildcard character. This works
for all comparison operators. When used on the `=` operator it falls
back to the pack level comparison (see tilde below). For example,
* `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
* `>= 1.2.x` is equivalent to `>= 1.2.0`
* `<= 2.x` is equivalent to `< 3`
* `*` is equivalent to `>= 0.0.0`
## Tilde Range Comparisons (Patch)
The tilde (`~`) comparison operator is for patch level ranges when a minor
version is specified and major level changes when the minor number is missing.
For example,
* `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
* `~1` is equivalent to `>= 1, < 2`
* `~2.3` is equivalent to `>= 2.3, < 2.4`
* `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
* `~1.x` is equivalent to `>= 1, < 2`
## Caret Range Comparisons (Major)
The caret (`^`) comparison operator is for major level changes. This is useful
when comparisons of API versions as a major change is API breaking. For example,
* `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
* `^0.0.1` is equivalent to `>= 0.0.1, < 1.0.0`
* `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
* `^2.3` is equivalent to `>= 2.3, < 3`
* `^2.x` is equivalent to `>= 2.0.0, < 3`
# Validation
In addition to testing a version against a constraint, a version can be validated
against a constraint. When validation fails a slice of errors containing why a
version didn't meet the constraint is returned. For example,
```go
c, err := semver.NewConstraint("<= 1.2.3, >= 1.4")
if err != nil {
// Handle constraint not being parseable.
}
v, _ := semver.NewVersion("1.3")
if err != nil {
// Handle version not being parseable.
}
// Validate a version against a constraint.
a, msgs := c.Validate(v)
// a is false
for _, m := range msgs {
fmt.Println(m)
// Loops over the errors which would read
// "1.3 is greater than 1.2.3"
// "1.3 is less than 1.4"
}
```
# Fuzzing
[dvyukov/go-fuzz](https://github.com/dvyukov/go-fuzz) is used for fuzzing.
1. `go-fuzz-build`
2. `go-fuzz -workdir=fuzz`
# Contribute
If you find an issue or want to contribute please file an [issue](https://github.com/Masterminds/semver/issues)
or [create a pull request](https://github.com/Masterminds/semver/pulls).

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version: build-{build}.{branch}
clone_folder: C:\gopath\src\github.com\Masterminds\semver
shallow_clone: true
environment:
GOPATH: C:\gopath
platform:
- x64
install:
- go version
- go env
- go get -u gopkg.in/alecthomas/gometalinter.v1
- set PATH=%PATH%;%GOPATH%\bin
- gometalinter.v1.exe --install
build_script:
- go install -v ./...
test_script:
- "gometalinter.v1 \
--disable-all \
--enable deadcode \
--severity deadcode:error \
--enable gofmt \
--enable gosimple \
--enable ineffassign \
--enable misspell \
--enable vet \
--tests \
--vendor \
--deadline 60s \
./... || exit_code=1"
- "gometalinter.v1 \
--disable-all \
--enable golint \
--vendor \
--deadline 60s \
./... || :"
- go test -v
deploy: off

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package semver
// Collection is a collection of Version instances and implements the sort
// interface. See the sort package for more details.
// https://golang.org/pkg/sort/
type Collection []*Version
// Len returns the length of a collection. The number of Version instances
// on the slice.
func (c Collection) Len() int {
return len(c)
}
// Less is needed for the sort interface to compare two Version objects on the
// slice. If checks if one is less than the other.
func (c Collection) Less(i, j int) bool {
return c[i].LessThan(c[j])
}
// Swap is needed for the sort interface to replace the Version objects
// at two different positions in the slice.
func (c Collection) Swap(i, j int) {
c[i], c[j] = c[j], c[i]
}

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package semver
import (
"errors"
"fmt"
"regexp"
"strings"
)
// Constraints is one or more constraint that a semantic version can be
// checked against.
type Constraints struct {
constraints [][]*constraint
}
// NewConstraint returns a Constraints instance that a Version instance can
// be checked against. If there is a parse error it will be returned.
func NewConstraint(c string) (*Constraints, error) {
// Rewrite - ranges into a comparison operation.
c = rewriteRange(c)
ors := strings.Split(c, "||")
or := make([][]*constraint, len(ors))
for k, v := range ors {
cs := strings.Split(v, ",")
result := make([]*constraint, len(cs))
for i, s := range cs {
pc, err := parseConstraint(s)
if err != nil {
return nil, err
}
result[i] = pc
}
or[k] = result
}
o := &Constraints{constraints: or}
return o, nil
}
// Check tests if a version satisfies the constraints.
func (cs Constraints) Check(v *Version) bool {
// loop over the ORs and check the inner ANDs
for _, o := range cs.constraints {
joy := true
for _, c := range o {
if !c.check(v) {
joy = false
break
}
}
if joy {
return true
}
}
return false
}
// Validate checks if a version satisfies a constraint. If not a slice of
// reasons for the failure are returned in addition to a bool.
func (cs Constraints) Validate(v *Version) (bool, []error) {
// loop over the ORs and check the inner ANDs
var e []error
// Capture the prerelease message only once. When it happens the first time
// this var is marked
var prerelesase bool
for _, o := range cs.constraints {
joy := true
for _, c := range o {
// Before running the check handle the case there the version is
// a prerelease and the check is not searching for prereleases.
if c.con.pre == "" && v.pre != "" {
if !prerelesase {
em := fmt.Errorf("%s is a prerelease version and the constraint is only looking for release versions", v)
e = append(e, em)
prerelesase = true
}
joy = false
} else {
if !c.check(v) {
em := fmt.Errorf(c.msg, v, c.orig)
e = append(e, em)
joy = false
}
}
}
if joy {
return true, []error{}
}
}
return false, e
}
var constraintOps map[string]cfunc
var constraintMsg map[string]string
var constraintRegex *regexp.Regexp
func init() {
constraintOps = map[string]cfunc{
"": constraintTildeOrEqual,
"=": constraintTildeOrEqual,
"!=": constraintNotEqual,
">": constraintGreaterThan,
"<": constraintLessThan,
">=": constraintGreaterThanEqual,
"=>": constraintGreaterThanEqual,
"<=": constraintLessThanEqual,
"=<": constraintLessThanEqual,
"~": constraintTilde,
"~>": constraintTilde,
"^": constraintCaret,
}
constraintMsg = map[string]string{
"": "%s is not equal to %s",
"=": "%s is not equal to %s",
"!=": "%s is equal to %s",
">": "%s is less than or equal to %s",
"<": "%s is greater than or equal to %s",
">=": "%s is less than %s",
"=>": "%s is less than %s",
"<=": "%s is greater than %s",
"=<": "%s is greater than %s",
"~": "%s does not have same major and minor version as %s",
"~>": "%s does not have same major and minor version as %s",
"^": "%s does not have same major version as %s",
}
ops := make([]string, 0, len(constraintOps))
for k := range constraintOps {
ops = append(ops, regexp.QuoteMeta(k))
}
constraintRegex = regexp.MustCompile(fmt.Sprintf(
`^\s*(%s)\s*(%s)\s*$`,
strings.Join(ops, "|"),
cvRegex))
constraintRangeRegex = regexp.MustCompile(fmt.Sprintf(
`\s*(%s)\s+-\s+(%s)\s*`,
cvRegex, cvRegex))
}
// An individual constraint
type constraint struct {
// The callback function for the restraint. It performs the logic for
// the constraint.
function cfunc
msg string
// The version used in the constraint check. For example, if a constraint
// is '<= 2.0.0' the con a version instance representing 2.0.0.
con *Version
// The original parsed version (e.g., 4.x from != 4.x)
orig string
// When an x is used as part of the version (e.g., 1.x)
minorDirty bool
dirty bool
patchDirty bool
}
// Check if a version meets the constraint
func (c *constraint) check(v *Version) bool {
return c.function(v, c)
}
type cfunc func(v *Version, c *constraint) bool
func parseConstraint(c string) (*constraint, error) {
m := constraintRegex.FindStringSubmatch(c)
if m == nil {
return nil, fmt.Errorf("improper constraint: %s", c)
}
ver := m[2]
orig := ver
minorDirty := false
patchDirty := false
dirty := false
if isX(m[3]) {
ver = "0.0.0"
dirty = true
} else if isX(strings.TrimPrefix(m[4], ".")) || m[4] == "" {
minorDirty = true
dirty = true
ver = fmt.Sprintf("%s.0.0%s", m[3], m[6])
} else if isX(strings.TrimPrefix(m[5], ".")) {
dirty = true
patchDirty = true
ver = fmt.Sprintf("%s%s.0%s", m[3], m[4], m[6])
}
con, err := NewVersion(ver)
if err != nil {
// The constraintRegex should catch any regex parsing errors. So,
// we should never get here.
return nil, errors.New("constraint Parser Error")
}
cs := &constraint{
function: constraintOps[m[1]],
msg: constraintMsg[m[1]],
con: con,
orig: orig,
minorDirty: minorDirty,
patchDirty: patchDirty,
dirty: dirty,
}
return cs, nil
}
// Constraint functions
func constraintNotEqual(v *Version, c *constraint) bool {
if c.dirty {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
if c.con.Major() != v.Major() {
return true
}
if c.con.Minor() != v.Minor() && !c.minorDirty {
return true
} else if c.minorDirty {
return false
}
return false
}
return !v.Equal(c.con)
}
func constraintGreaterThan(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
return v.Compare(c.con) == 1
}
func constraintLessThan(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
if !c.dirty {
return v.Compare(c.con) < 0
}
if v.Major() > c.con.Major() {
return false
} else if v.Minor() > c.con.Minor() && !c.minorDirty {
return false
}
return true
}
func constraintGreaterThanEqual(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
return v.Compare(c.con) >= 0
}
func constraintLessThanEqual(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
if !c.dirty {
return v.Compare(c.con) <= 0
}
if v.Major() > c.con.Major() {
return false
} else if v.Minor() > c.con.Minor() && !c.minorDirty {
return false
}
return true
}
// ~*, ~>* --> >= 0.0.0 (any)
// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0, <3.0.0
// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0, <2.1.0
// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0, <1.3.0
// ~1.2.3, ~>1.2.3 --> >=1.2.3, <1.3.0
// ~1.2.0, ~>1.2.0 --> >=1.2.0, <1.3.0
func constraintTilde(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
if v.LessThan(c.con) {
return false
}
// ~0.0.0 is a special case where all constraints are accepted. It's
// equivalent to >= 0.0.0.
if c.con.Major() == 0 && c.con.Minor() == 0 && c.con.Patch() == 0 &&
!c.minorDirty && !c.patchDirty {
return true
}
if v.Major() != c.con.Major() {
return false
}
if v.Minor() != c.con.Minor() && !c.minorDirty {
return false
}
return true
}
// When there is a .x (dirty) status it automatically opts in to ~. Otherwise
// it's a straight =
func constraintTildeOrEqual(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
if c.dirty {
c.msg = constraintMsg["~"]
return constraintTilde(v, c)
}
return v.Equal(c.con)
}
// ^* --> (any)
// ^2, ^2.x, ^2.x.x --> >=2.0.0, <3.0.0
// ^2.0, ^2.0.x --> >=2.0.0, <3.0.0
// ^1.2, ^1.2.x --> >=1.2.0, <2.0.0
// ^1.2.3 --> >=1.2.3, <2.0.0
// ^1.2.0 --> >=1.2.0, <2.0.0
func constraintCaret(v *Version, c *constraint) bool {
// If there is a pre-release on the version but the constraint isn't looking
// for them assume that pre-releases are not compatible. See issue 21 for
// more details.
if v.Prerelease() != "" && c.con.Prerelease() == "" {
return false
}
if v.LessThan(c.con) {
return false
}
if v.Major() != c.con.Major() {
return false
}
return true
}
var constraintRangeRegex *regexp.Regexp
const cvRegex string = `v?([0-9|x|X|\*]+)(\.[0-9|x|X|\*]+)?(\.[0-9|x|X|\*]+)?` +
`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?`
func isX(x string) bool {
switch x {
case "x", "*", "X":
return true
default:
return false
}
}
func rewriteRange(i string) string {
m := constraintRangeRegex.FindAllStringSubmatch(i, -1)
if m == nil {
return i
}
o := i
for _, v := range m {
t := fmt.Sprintf(">= %s, <= %s", v[1], v[11])
o = strings.Replace(o, v[0], t, 1)
}
return o
}

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/*
Package semver provides the ability to work with Semantic Versions (http://semver.org) in Go.
Specifically it provides the ability to:
* Parse semantic versions
* Sort semantic versions
* Check if a semantic version fits within a set of constraints
* Optionally work with a `v` prefix
Parsing Semantic Versions
To parse a semantic version use the `NewVersion` function. For example,
v, err := semver.NewVersion("1.2.3-beta.1+build345")
If there is an error the version wasn't parseable. The version object has methods
to get the parts of the version, compare it to other versions, convert the
version back into a string, and get the original string. For more details
please see the documentation at https://godoc.org/github.com/Masterminds/semver.
Sorting Semantic Versions
A set of versions can be sorted using the `sort` package from the standard library.
For example,
raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
vs := make([]*semver.Version, len(raw))
for i, r := range raw {
v, err := semver.NewVersion(r)
if err != nil {
t.Errorf("Error parsing version: %s", err)
}
vs[i] = v
}
sort.Sort(semver.Collection(vs))
Checking Version Constraints
Checking a version against version constraints is one of the most featureful
parts of the package.
c, err := semver.NewConstraint(">= 1.2.3")
if err != nil {
// Handle constraint not being parseable.
}
v, err := semver.NewVersion("1.3")
if err != nil {
// Handle version not being parseable.
}
// Check if the version meets the constraints. The a variable will be true.
a := c.Check(v)
Basic Comparisons
There are two elements to the comparisons. First, a comparison string is a list
of comma separated and comparisons. These are then separated by || separated or
comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
greater than or equal to 4.2.3.
The basic comparisons are:
* `=`: equal (aliased to no operator)
* `!=`: not equal
* `>`: greater than
* `<`: less than
* `>=`: greater than or equal to
* `<=`: less than or equal to
Hyphen Range Comparisons
There are multiple methods to handle ranges and the first is hyphens ranges.
These look like:
* `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
* `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
Wildcards In Comparisons
The `x`, `X`, and `*` characters can be used as a wildcard character. This works
for all comparison operators. When used on the `=` operator it falls
back to the pack level comparison (see tilde below). For example,
* `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
* `>= 1.2.x` is equivalent to `>= 1.2.0`
* `<= 2.x` is equivalent to `<= 3`
* `*` is equivalent to `>= 0.0.0`
Tilde Range Comparisons (Patch)
The tilde (`~`) comparison operator is for patch level ranges when a minor
version is specified and major level changes when the minor number is missing.
For example,
* `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
* `~1` is equivalent to `>= 1, < 2`
* `~2.3` is equivalent to `>= 2.3, < 2.4`
* `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
* `~1.x` is equivalent to `>= 1, < 2`
Caret Range Comparisons (Major)
The caret (`^`) comparison operator is for major level changes. This is useful
when comparisons of API versions as a major change is API breaking. For example,
* `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
* `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
* `^2.3` is equivalent to `>= 2.3, < 3`
* `^2.x` is equivalent to `>= 2.0.0, < 3`
*/
package semver

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package semver
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"regexp"
"strconv"
"strings"
)
// The compiled version of the regex created at init() is cached here so it
// only needs to be created once.
var versionRegex *regexp.Regexp
var validPrereleaseRegex *regexp.Regexp
var (
// ErrInvalidSemVer is returned a version is found to be invalid when
// being parsed.
ErrInvalidSemVer = errors.New("Invalid Semantic Version")
// ErrInvalidMetadata is returned when the metadata is an invalid format
ErrInvalidMetadata = errors.New("Invalid Metadata string")
// ErrInvalidPrerelease is returned when the pre-release is an invalid format
ErrInvalidPrerelease = errors.New("Invalid Prerelease string")
)
// SemVerRegex is the regular expression used to parse a semantic version.
const SemVerRegex string = `v?([0-9]+)(\.[0-9]+)?(\.[0-9]+)?` +
`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?`
// ValidPrerelease is the regular expression which validates
// both prerelease and metadata values.
const ValidPrerelease string = `^([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*)$`
// Version represents a single semantic version.
type Version struct {
major, minor, patch int64
pre string
metadata string
original string
}
func init() {
versionRegex = regexp.MustCompile("^" + SemVerRegex + "$")
validPrereleaseRegex = regexp.MustCompile(ValidPrerelease)
}
// NewVersion parses a given version and returns an instance of Version or
// an error if unable to parse the version.
func NewVersion(v string) (*Version, error) {
m := versionRegex.FindStringSubmatch(v)
if m == nil {
return nil, ErrInvalidSemVer
}
sv := &Version{
metadata: m[8],
pre: m[5],
original: v,
}
var temp int64
temp, err := strconv.ParseInt(m[1], 10, 64)
if err != nil {
return nil, fmt.Errorf("Error parsing version segment: %s", err)
}
sv.major = temp
if m[2] != "" {
temp, err = strconv.ParseInt(strings.TrimPrefix(m[2], "."), 10, 64)
if err != nil {
return nil, fmt.Errorf("Error parsing version segment: %s", err)
}
sv.minor = temp
} else {
sv.minor = 0
}
if m[3] != "" {
temp, err = strconv.ParseInt(strings.TrimPrefix(m[3], "."), 10, 64)
if err != nil {
return nil, fmt.Errorf("Error parsing version segment: %s", err)
}
sv.patch = temp
} else {
sv.patch = 0
}
return sv, nil
}
// MustParse parses a given version and panics on error.
func MustParse(v string) *Version {
sv, err := NewVersion(v)
if err != nil {
panic(err)
}
return sv
}
// String converts a Version object to a string.
// Note, if the original version contained a leading v this version will not.
// See the Original() method to retrieve the original value. Semantic Versions
// don't contain a leading v per the spec. Instead it's optional on
// implementation.
func (v *Version) String() string {
var buf bytes.Buffer
fmt.Fprintf(&buf, "%d.%d.%d", v.major, v.minor, v.patch)
if v.pre != "" {
fmt.Fprintf(&buf, "-%s", v.pre)
}
if v.metadata != "" {
fmt.Fprintf(&buf, "+%s", v.metadata)
}
return buf.String()
}
// Original returns the original value passed in to be parsed.
func (v *Version) Original() string {
return v.original
}
// Major returns the major version.
func (v *Version) Major() int64 {
return v.major
}
// Minor returns the minor version.
func (v *Version) Minor() int64 {
return v.minor
}
// Patch returns the patch version.
func (v *Version) Patch() int64 {
return v.patch
}
// Prerelease returns the pre-release version.
func (v *Version) Prerelease() string {
return v.pre
}
// Metadata returns the metadata on the version.
func (v *Version) Metadata() string {
return v.metadata
}
// originalVPrefix returns the original 'v' prefix if any.
func (v *Version) originalVPrefix() string {
// Note, only lowercase v is supported as a prefix by the parser.
if v.original != "" && v.original[:1] == "v" {
return v.original[:1]
}
return ""
}
// IncPatch produces the next patch version.
// If the current version does not have prerelease/metadata information,
// it unsets metadata and prerelease values, increments patch number.
// If the current version has any of prerelease or metadata information,
// it unsets both values and keeps curent patch value
func (v Version) IncPatch() Version {
vNext := v
// according to http://semver.org/#spec-item-9
// Pre-release versions have a lower precedence than the associated normal version.
// according to http://semver.org/#spec-item-10
// Build metadata SHOULD be ignored when determining version precedence.
if v.pre != "" {
vNext.metadata = ""
vNext.pre = ""
} else {
vNext.metadata = ""
vNext.pre = ""
vNext.patch = v.patch + 1
}
vNext.original = v.originalVPrefix() + "" + vNext.String()
return vNext
}
// IncMinor produces the next minor version.
// Sets patch to 0.
// Increments minor number.
// Unsets metadata.
// Unsets prerelease status.
func (v Version) IncMinor() Version {
vNext := v
vNext.metadata = ""
vNext.pre = ""
vNext.patch = 0
vNext.minor = v.minor + 1
vNext.original = v.originalVPrefix() + "" + vNext.String()
return vNext
}
// IncMajor produces the next major version.
// Sets patch to 0.
// Sets minor to 0.
// Increments major number.
// Unsets metadata.
// Unsets prerelease status.
func (v Version) IncMajor() Version {
vNext := v
vNext.metadata = ""
vNext.pre = ""
vNext.patch = 0
vNext.minor = 0
vNext.major = v.major + 1
vNext.original = v.originalVPrefix() + "" + vNext.String()
return vNext
}
// SetPrerelease defines the prerelease value.
// Value must not include the required 'hypen' prefix.
func (v Version) SetPrerelease(prerelease string) (Version, error) {
vNext := v
if len(prerelease) > 0 && !validPrereleaseRegex.MatchString(prerelease) {
return vNext, ErrInvalidPrerelease
}
vNext.pre = prerelease
vNext.original = v.originalVPrefix() + "" + vNext.String()
return vNext, nil
}
// SetMetadata defines metadata value.
// Value must not include the required 'plus' prefix.
func (v Version) SetMetadata(metadata string) (Version, error) {
vNext := v
if len(metadata) > 0 && !validPrereleaseRegex.MatchString(metadata) {
return vNext, ErrInvalidMetadata
}
vNext.metadata = metadata
vNext.original = v.originalVPrefix() + "" + vNext.String()
return vNext, nil
}
// LessThan tests if one version is less than another one.
func (v *Version) LessThan(o *Version) bool {
return v.Compare(o) < 0
}
// GreaterThan tests if one version is greater than another one.
func (v *Version) GreaterThan(o *Version) bool {
return v.Compare(o) > 0
}
// Equal tests if two versions are equal to each other.
// Note, versions can be equal with different metadata since metadata
// is not considered part of the comparable version.
func (v *Version) Equal(o *Version) bool {
return v.Compare(o) == 0
}
// Compare compares this version to another one. It returns -1, 0, or 1 if
// the version smaller, equal, or larger than the other version.
//
// Versions are compared by X.Y.Z. Build metadata is ignored. Prerelease is
// lower than the version without a prerelease.
func (v *Version) Compare(o *Version) int {
// Compare the major, minor, and patch version for differences. If a
// difference is found return the comparison.
if d := compareSegment(v.Major(), o.Major()); d != 0 {
return d
}
if d := compareSegment(v.Minor(), o.Minor()); d != 0 {
return d
}
if d := compareSegment(v.Patch(), o.Patch()); d != 0 {
return d
}
// At this point the major, minor, and patch versions are the same.
ps := v.pre
po := o.Prerelease()
if ps == "" && po == "" {
return 0
}
if ps == "" {
return 1
}
if po == "" {
return -1
}
return comparePrerelease(ps, po)
}
// UnmarshalJSON implements JSON.Unmarshaler interface.
func (v *Version) UnmarshalJSON(b []byte) error {
var s string
if err := json.Unmarshal(b, &s); err != nil {
return err
}
temp, err := NewVersion(s)
if err != nil {
return err
}
v.major = temp.major
v.minor = temp.minor
v.patch = temp.patch
v.pre = temp.pre
v.metadata = temp.metadata
v.original = temp.original
temp = nil
return nil
}
// MarshalJSON implements JSON.Marshaler interface.
func (v *Version) MarshalJSON() ([]byte, error) {
return json.Marshal(v.String())
}
func compareSegment(v, o int64) int {
if v < o {
return -1
}
if v > o {
return 1
}
return 0
}
func comparePrerelease(v, o string) int {
// split the prelease versions by their part. The separator, per the spec,
// is a .
sparts := strings.Split(v, ".")
oparts := strings.Split(o, ".")
// Find the longer length of the parts to know how many loop iterations to
// go through.
slen := len(sparts)
olen := len(oparts)
l := slen
if olen > slen {
l = olen
}
// Iterate over each part of the prereleases to compare the differences.
for i := 0; i < l; i++ {
// Since the lentgh of the parts can be different we need to create
// a placeholder. This is to avoid out of bounds issues.
stemp := ""
if i < slen {
stemp = sparts[i]
}
otemp := ""
if i < olen {
otemp = oparts[i]
}
d := comparePrePart(stemp, otemp)
if d != 0 {
return d
}
}
// Reaching here means two versions are of equal value but have different
// metadata (the part following a +). They are not identical in string form
// but the version comparison finds them to be equal.
return 0
}
func comparePrePart(s, o string) int {
// Fastpath if they are equal
if s == o {
return 0
}
// When s or o are empty we can use the other in an attempt to determine
// the response.
if s == "" {
if o != "" {
return -1
}
return 1
}
if o == "" {
if s != "" {
return 1
}
return -1
}
// When comparing strings "99" is greater than "103". To handle
// cases like this we need to detect numbers and compare them. According
// to the semver spec, numbers are always positive. If there is a - at the
// start like -99 this is to be evaluated as an alphanum. numbers always
// have precedence over alphanum. Parsing as Uints because negative numbers
// are ignored.
oi, n1 := strconv.ParseUint(o, 10, 64)
si, n2 := strconv.ParseUint(s, 10, 64)
// The case where both are strings compare the strings
if n1 != nil && n2 != nil {
if s > o {
return 1
}
return -1
} else if n1 != nil {
// o is a string and s is a number
return -1
} else if n2 != nil {
// s is a string and o is a number
return 1
}
// Both are numbers
if si > oi {
return 1
}
return -1
}

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// +build gofuzz
package semver
func Fuzz(data []byte) int {
if _, err := NewVersion(string(data)); err != nil {
return 0
}
return 1
}

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@ -0,0 +1,2 @@
vendor/
/.glide

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language: go
go:
- 1.9.x
- 1.10.x
- 1.11.x
- 1.12.x
- 1.13.x
- tip
# Setting sudo access to false will let Travis CI use containers rather than
# VMs to run the tests. For more details see:
# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
sudo: false
script:
- make setup test
notifications:
webhooks:
urls:
- https://webhooks.gitter.im/e/06e3328629952dabe3e0
on_success: change # options: [always|never|change] default: always
on_failure: always # options: [always|never|change] default: always
on_start: never # options: [always|never|change] default: always

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# Changelog
## Release 2.22.0 (2019-10-02)
### Added
- #173: Added getHostByName function to resolve dns names to ips (thanks @fcgravalos)
- #195: Added deepCopy function for use with dicts
### Changed
- Updated merge and mergeOverwrite documentation to explain copying and how to
use deepCopy with it
## Release 2.21.0 (2019-09-18)
### Added
- #122: Added encryptAES/decryptAES functions (thanks @n0madic)
- #128: Added toDecimal support (thanks @Dean-Coakley)
- #169: Added list contcat (thanks @astorath)
- #174: Added deepEqual function (thanks @bonifaido)
- #170: Added url parse and join functions (thanks @astorath)
### Changed
- #171: Updated glide config for Google UUID to v1 and to add ranges to semver and testify
### Fixed
- #172: Fix semver wildcard example (thanks @piepmatz)
- #175: Fix dateInZone doc example (thanks @s3than)
## Release 2.20.0 (2019-06-18)
### Added
- #164: Adding function to get unix epoch for a time (@mattfarina)
- #166: Adding tests for date_in_zone (@mattfarina)
### Changed
- #144: Fix function comments based on best practices from Effective Go (@CodeLingoTeam)
- #150: Handles pointer type for time.Time in "htmlDate" (@mapreal19)
- #161, #157, #160, #153, #158, #156, #155, #159, #152 documentation updates (@badeadan)
### Fixed
## Release 2.19.0 (2019-03-02)
IMPORTANT: This release reverts a change from 2.18.0
In the previous release (2.18), we prematurely merged a partial change to the crypto functions that led to creating two sets of crypto functions (I blame @technosophos -- since that's me). This release rolls back that change, and does what was originally intended: It alters the existing crypto functions to use secure random.
We debated whether this classifies as a change worthy of major revision, but given the proximity to the last release, we have decided that treating 2.18 as a faulty release is the correct course of action. We apologize for any inconvenience.
### Changed
- Fix substr panic 35fb796 (Alexey igrychev)
- Remove extra period 1eb7729 (Matthew Lorimor)
- Make random string functions use crypto by default 6ceff26 (Matthew Lorimor)
- README edits/fixes/suggestions 08fe136 (Lauri Apple)
## Release 2.18.0 (2019-02-12)
### Added
- Added mergeOverwrite function
- cryptographic functions that use secure random (see fe1de12)
### Changed
- Improve documentation of regexMatch function, resolves #139 90b89ce (Jan Tagscherer)
- Handle has for nil list 9c10885 (Daniel Cohen)
- Document behaviour of mergeOverwrite fe0dbe9 (Lukas Rieder)
- doc: adds missing documentation. 4b871e6 (Fernandez Ludovic)
- Replace outdated goutils imports 01893d2 (Matthew Lorimor)
- Surface crypto secure random strings from goutils fe1de12 (Matthew Lorimor)
- Handle untyped nil values as paramters to string functions 2b2ec8f (Morten Torkildsen)
### Fixed
- Fix dict merge issue and provide mergeOverwrite .dst .src1 to overwrite from src -> dst 4c59c12 (Lukas Rieder)
- Fix substr var names and comments d581f80 (Dean Coakley)
- Fix substr documentation 2737203 (Dean Coakley)
## Release 2.17.1 (2019-01-03)
### Fixed
The 2.17.0 release did not have a version pinned for xstrings, which caused compilation failures when xstrings < 1.2 was used. This adds the correct version string to glide.yaml.
## Release 2.17.0 (2019-01-03)
### Added
- adds alder32sum function and test 6908fc2 (marshallford)
- Added kebabcase function ca331a1 (Ilyes512)
### Changed
- Update goutils to 1.1.0 4e1125d (Matt Butcher)
### Fixed
- Fix 'has' documentation e3f2a85 (dean-coakley)
- docs(dict): fix typo in pick example dc424f9 (Dustin Specker)
- fixes spelling errors... not sure how that happened 4cf188a (marshallford)
## Release 2.16.0 (2018-08-13)
### Added
- add splitn function fccb0b0 (Helgi Þorbjörnsson)
- Add slice func df28ca7 (gongdo)
- Generate serial number a3bdffd (Cody Coons)
- Extract values of dict with values function df39312 (Lawrence Jones)
### Changed
- Modify panic message for list.slice ae38335 (gongdo)
- Minor improvement in code quality - Removed an unreachable piece of code at defaults.go#L26:6 - Resolve formatting issues. 5834241 (Abhishek Kashyap)
- Remove duplicated documentation 1d97af1 (Matthew Fisher)
- Test on go 1.11 49df809 (Helgi Þormar Þorbjörnsson)
### Fixed
- Fix file permissions c5f40b5 (gongdo)
- Fix example for buildCustomCert 7779e0d (Tin Lam)
## Release 2.15.0 (2018-04-02)
### Added
- #68 and #69: Add json helpers to docs (thanks @arunvelsriram)
- #66: Add ternary function (thanks @binoculars)
- #67: Allow keys function to take multiple dicts (thanks @binoculars)
- #89: Added sha1sum to crypto function (thanks @benkeil)
- #81: Allow customizing Root CA that used by genSignedCert (thanks @chenzhiwei)
- #92: Add travis testing for go 1.10
- #93: Adding appveyor config for windows testing
### Changed
- #90: Updating to more recent dependencies
- #73: replace satori/go.uuid with google/uuid (thanks @petterw)
### Fixed
- #76: Fixed documentation typos (thanks @Thiht)
- Fixed rounding issue on the `ago` function. Note, the removes support for Go 1.8 and older
## Release 2.14.1 (2017-12-01)
### Fixed
- #60: Fix typo in function name documentation (thanks @neil-ca-moore)
- #61: Removing line with {{ due to blocking github pages genertion
- #64: Update the list functions to handle int, string, and other slices for compatibility
## Release 2.14.0 (2017-10-06)
This new version of Sprig adds a set of functions for generating and working with SSL certificates.
- `genCA` generates an SSL Certificate Authority
- `genSelfSignedCert` generates an SSL self-signed certificate
- `genSignedCert` generates an SSL certificate and key based on a given CA
## Release 2.13.0 (2017-09-18)
This release adds new functions, including:
- `regexMatch`, `regexFindAll`, `regexFind`, `regexReplaceAll`, `regexReplaceAllLiteral`, and `regexSplit` to work with regular expressions
- `floor`, `ceil`, and `round` math functions
- `toDate` converts a string to a date
- `nindent` is just like `indent` but also prepends a new line
- `ago` returns the time from `time.Now`
### Added
- #40: Added basic regex functionality (thanks @alanquillin)
- #41: Added ceil floor and round functions (thanks @alanquillin)
- #48: Added toDate function (thanks @andreynering)
- #50: Added nindent function (thanks @binoculars)
- #46: Added ago function (thanks @slayer)
### Changed
- #51: Updated godocs to include new string functions (thanks @curtisallen)
- #49: Added ability to merge multiple dicts (thanks @binoculars)
## Release 2.12.0 (2017-05-17)
- `snakecase`, `camelcase`, and `shuffle` are three new string functions
- `fail` allows you to bail out of a template render when conditions are not met
## Release 2.11.0 (2017-05-02)
- Added `toJson` and `toPrettyJson`
- Added `merge`
- Refactored documentation
## Release 2.10.0 (2017-03-15)
- Added `semver` and `semverCompare` for Semantic Versions
- `list` replaces `tuple`
- Fixed issue with `join`
- Added `first`, `last`, `intial`, `rest`, `prepend`, `append`, `toString`, `toStrings`, `sortAlpha`, `reverse`, `coalesce`, `pluck`, `pick`, `compact`, `keys`, `omit`, `uniq`, `has`, `without`
## Release 2.9.0 (2017-02-23)
- Added `splitList` to split a list
- Added crypto functions of `genPrivateKey` and `derivePassword`
## Release 2.8.0 (2016-12-21)
- Added access to several path functions (`base`, `dir`, `clean`, `ext`, and `abs`)
- Added functions for _mutating_ dictionaries (`set`, `unset`, `hasKey`)
## Release 2.7.0 (2016-12-01)
- Added `sha256sum` to generate a hash of an input
- Added functions to convert a numeric or string to `int`, `int64`, `float64`
## Release 2.6.0 (2016-10-03)
- Added a `uuidv4` template function for generating UUIDs inside of a template.
## Release 2.5.0 (2016-08-19)
- New `trimSuffix`, `trimPrefix`, `hasSuffix`, and `hasPrefix` functions
- New aliases have been added for a few functions that didn't follow the naming conventions (`trimAll` and `abbrevBoth`)
- `trimall` and `abbrevboth` (notice the case) are deprecated and will be removed in 3.0.0
## Release 2.4.0 (2016-08-16)
- Adds two functions: `until` and `untilStep`
## Release 2.3.0 (2016-06-21)
- cat: Concatenate strings with whitespace separators.
- replace: Replace parts of a string: `replace " " "-" "Me First"` renders "Me-First"
- plural: Format plurals: `len "foo" | plural "one foo" "many foos"` renders "many foos"
- indent: Indent blocks of text in a way that is sensitive to "\n" characters.
## Release 2.2.0 (2016-04-21)
- Added a `genPrivateKey` function (Thanks @bacongobbler)
## Release 2.1.0 (2016-03-30)
- `default` now prints the default value when it does not receive a value down the pipeline. It is much safer now to do `{{.Foo | default "bar"}}`.
- Added accessors for "hermetic" functions. These return only functions that, when given the same input, produce the same output.
## Release 2.0.0 (2016-03-29)
Because we switched from `int` to `int64` as the return value for all integer math functions, the library's major version number has been incremented.
- `min` complements `max` (formerly `biggest`)
- `empty` indicates that a value is the empty value for its type
- `tuple` creates a tuple inside of a template: `{{$t := tuple "a", "b" "c"}}`
- `dict` creates a dictionary inside of a template `{{$d := dict "key1" "val1" "key2" "val2"}}`
- Date formatters have been added for HTML dates (as used in `date` input fields)
- Integer math functions can convert from a number of types, including `string` (via `strconv.ParseInt`).
## Release 1.2.0 (2016-02-01)
- Added quote and squote
- Added b32enc and b32dec
- add now takes varargs
- biggest now takes varargs
## Release 1.1.0 (2015-12-29)
- Added #4: Added contains function. strings.Contains, but with the arguments
switched to simplify common pipelines. (thanks krancour)
- Added Travis-CI testing support
## Release 1.0.0 (2015-12-23)
- Initial release

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Sprig
Copyright (C) 2013 Masterminds
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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HAS_GLIDE := $(shell command -v glide;)
.PHONY: test
test:
go test -v .
.PHONY: setup
setup:
ifndef HAS_GLIDE
go get -u github.com/Masterminds/glide
endif
glide install

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# Sprig: Template functions for Go templates
[![Stability: Sustained](https://masterminds.github.io/stability/sustained.svg)](https://masterminds.github.io/stability/sustained.html)
[![Build Status](https://travis-ci.org/Masterminds/sprig.svg?branch=master)](https://travis-ci.org/Masterminds/sprig)
The Go language comes with a [built-in template
language](http://golang.org/pkg/text/template/), but not
very many template functions. Sprig is a library that provides more than 100 commonly
used template functions.
It is inspired by the template functions found in
[Twig](http://twig.sensiolabs.org/documentation) and in various
JavaScript libraries, such as [underscore.js](http://underscorejs.org/).
## Usage
**Template developers**: Please use Sprig's [function documentation](http://masterminds.github.io/sprig/) for
detailed instructions and code snippets for the >100 template functions available.
**Go developers**: If you'd like to include Sprig as a library in your program,
our API documentation is available [at GoDoc.org](http://godoc.org/github.com/Masterminds/sprig).
For standard usage, read on.
### Load the Sprig library
To load the Sprig `FuncMap`:
```go
import (
"github.com/Masterminds/sprig"
"html/template"
)
// This example illustrates that the FuncMap *must* be set before the
// templates themselves are loaded.
tpl := template.Must(
template.New("base").Funcs(sprig.FuncMap()).ParseGlob("*.html")
)
```
### Calling the functions inside of templates
By convention, all functions are lowercase. This seems to follow the Go
idiom for template functions (as opposed to template methods, which are
TitleCase). For example, this:
```
{{ "hello!" | upper | repeat 5 }}
```
produces this:
```
HELLO!HELLO!HELLO!HELLO!HELLO!
```
## Principles Driving Our Function Selection
We followed these principles to decide which functions to add and how to implement them:
- Use template functions to build layout. The following
types of operations are within the domain of template functions:
- Formatting
- Layout
- Simple type conversions
- Utilities that assist in handling common formatting and layout needs (e.g. arithmetic)
- Template functions should not return errors unless there is no way to print
a sensible value. For example, converting a string to an integer should not
produce an error if conversion fails. Instead, it should display a default
value.
- Simple math is necessary for grid layouts, pagers, and so on. Complex math
(anything other than arithmetic) should be done outside of templates.
- Template functions only deal with the data passed into them. They never retrieve
data from a source.
- Finally, do not override core Go template functions.

26
vendor/github.com/Masterminds/sprig/appveyor.yml generated vendored Normal file
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@ -0,0 +1,26 @@
version: build-{build}.{branch}
clone_folder: C:\gopath\src\github.com\Masterminds\sprig
shallow_clone: true
environment:
GOPATH: C:\gopath
platform:
- x64
install:
- go get -u github.com/Masterminds/glide
- set PATH=%GOPATH%\bin;%PATH%
- go version
- go env
build_script:
- glide install
- go install ./...
test_script:
- go test -v
deploy: off

502
vendor/github.com/Masterminds/sprig/crypto.go generated vendored Normal file
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package sprig
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/dsa"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/hmac"
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/sha256"
"crypto/x509"
"crypto/x509/pkix"
"encoding/asn1"
"encoding/base64"
"encoding/binary"
"encoding/hex"
"encoding/pem"
"errors"
"fmt"
"io"
"hash/adler32"
"math/big"
"net"
"time"
"github.com/google/uuid"
"golang.org/x/crypto/scrypt"
)
func sha256sum(input string) string {
hash := sha256.Sum256([]byte(input))
return hex.EncodeToString(hash[:])
}
func sha1sum(input string) string {
hash := sha1.Sum([]byte(input))
return hex.EncodeToString(hash[:])
}
func adler32sum(input string) string {
hash := adler32.Checksum([]byte(input))
return fmt.Sprintf("%d", hash)
}
// uuidv4 provides a safe and secure UUID v4 implementation
func uuidv4() string {
return fmt.Sprintf("%s", uuid.New())
}
var master_password_seed = "com.lyndir.masterpassword"
var password_type_templates = map[string][][]byte{
"maximum": {[]byte("anoxxxxxxxxxxxxxxxxx"), []byte("axxxxxxxxxxxxxxxxxno")},
"long": {[]byte("CvcvnoCvcvCvcv"), []byte("CvcvCvcvnoCvcv"), []byte("CvcvCvcvCvcvno"), []byte("CvccnoCvcvCvcv"), []byte("CvccCvcvnoCvcv"),
[]byte("CvccCvcvCvcvno"), []byte("CvcvnoCvccCvcv"), []byte("CvcvCvccnoCvcv"), []byte("CvcvCvccCvcvno"), []byte("CvcvnoCvcvCvcc"),
[]byte("CvcvCvcvnoCvcc"), []byte("CvcvCvcvCvccno"), []byte("CvccnoCvccCvcv"), []byte("CvccCvccnoCvcv"), []byte("CvccCvccCvcvno"),
[]byte("CvcvnoCvccCvcc"), []byte("CvcvCvccnoCvcc"), []byte("CvcvCvccCvccno"), []byte("CvccnoCvcvCvcc"), []byte("CvccCvcvnoCvcc"),
[]byte("CvccCvcvCvccno")},
"medium": {[]byte("CvcnoCvc"), []byte("CvcCvcno")},
"short": {[]byte("Cvcn")},
"basic": {[]byte("aaanaaan"), []byte("aannaaan"), []byte("aaannaaa")},
"pin": {[]byte("nnnn")},
}
var template_characters = map[byte]string{
'V': "AEIOU",
'C': "BCDFGHJKLMNPQRSTVWXYZ",
'v': "aeiou",
'c': "bcdfghjklmnpqrstvwxyz",
'A': "AEIOUBCDFGHJKLMNPQRSTVWXYZ",
'a': "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz",
'n': "0123456789",
'o': "@&%?,=[]_:-+*$#!'^~;()/.",
'x': "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz0123456789!@#$%^&*()",
}
func derivePassword(counter uint32, password_type, password, user, site string) string {
var templates = password_type_templates[password_type]
if templates == nil {
return fmt.Sprintf("cannot find password template %s", password_type)
}
var buffer bytes.Buffer
buffer.WriteString(master_password_seed)
binary.Write(&buffer, binary.BigEndian, uint32(len(user)))
buffer.WriteString(user)
salt := buffer.Bytes()
key, err := scrypt.Key([]byte(password), salt, 32768, 8, 2, 64)
if err != nil {
return fmt.Sprintf("failed to derive password: %s", err)
}
buffer.Truncate(len(master_password_seed))
binary.Write(&buffer, binary.BigEndian, uint32(len(site)))
buffer.WriteString(site)
binary.Write(&buffer, binary.BigEndian, counter)
var hmacv = hmac.New(sha256.New, key)
hmacv.Write(buffer.Bytes())
var seed = hmacv.Sum(nil)
var temp = templates[int(seed[0])%len(templates)]
buffer.Truncate(0)
for i, element := range temp {
pass_chars := template_characters[element]
pass_char := pass_chars[int(seed[i+1])%len(pass_chars)]
buffer.WriteByte(pass_char)
}
return buffer.String()
}
func generatePrivateKey(typ string) string {
var priv interface{}
var err error
switch typ {
case "", "rsa":
// good enough for government work
priv, err = rsa.GenerateKey(rand.Reader, 4096)
case "dsa":
key := new(dsa.PrivateKey)
// again, good enough for government work
if err = dsa.GenerateParameters(&key.Parameters, rand.Reader, dsa.L2048N256); err != nil {
return fmt.Sprintf("failed to generate dsa params: %s", err)
}
err = dsa.GenerateKey(key, rand.Reader)
priv = key
case "ecdsa":
// again, good enough for government work
priv, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
default:
return "Unknown type " + typ
}
if err != nil {
return fmt.Sprintf("failed to generate private key: %s", err)
}
return string(pem.EncodeToMemory(pemBlockForKey(priv)))
}
type DSAKeyFormat struct {
Version int
P, Q, G, Y, X *big.Int
}
func pemBlockForKey(priv interface{}) *pem.Block {
switch k := priv.(type) {
case *rsa.PrivateKey:
return &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k)}
case *dsa.PrivateKey:
val := DSAKeyFormat{
P: k.P, Q: k.Q, G: k.G,
Y: k.Y, X: k.X,
}
bytes, _ := asn1.Marshal(val)
return &pem.Block{Type: "DSA PRIVATE KEY", Bytes: bytes}
case *ecdsa.PrivateKey:
b, _ := x509.MarshalECPrivateKey(k)
return &pem.Block{Type: "EC PRIVATE KEY", Bytes: b}
default:
return nil
}
}
type certificate struct {
Cert string
Key string
}
func buildCustomCertificate(b64cert string, b64key string) (certificate, error) {
crt := certificate{}
cert, err := base64.StdEncoding.DecodeString(b64cert)
if err != nil {
return crt, errors.New("unable to decode base64 certificate")
}
key, err := base64.StdEncoding.DecodeString(b64key)
if err != nil {
return crt, errors.New("unable to decode base64 private key")
}
decodedCert, _ := pem.Decode(cert)
if decodedCert == nil {
return crt, errors.New("unable to decode certificate")
}
_, err = x509.ParseCertificate(decodedCert.Bytes)
if err != nil {
return crt, fmt.Errorf(
"error parsing certificate: decodedCert.Bytes: %s",
err,
)
}
decodedKey, _ := pem.Decode(key)
if decodedKey == nil {
return crt, errors.New("unable to decode key")
}
_, err = x509.ParsePKCS1PrivateKey(decodedKey.Bytes)
if err != nil {
return crt, fmt.Errorf(
"error parsing prive key: decodedKey.Bytes: %s",
err,
)
}
crt.Cert = string(cert)
crt.Key = string(key)
return crt, nil
}
func generateCertificateAuthority(
cn string,
daysValid int,
) (certificate, error) {
ca := certificate{}
template, err := getBaseCertTemplate(cn, nil, nil, daysValid)
if err != nil {
return ca, err
}
// Override KeyUsage and IsCA
template.KeyUsage = x509.KeyUsageKeyEncipherment |
x509.KeyUsageDigitalSignature |
x509.KeyUsageCertSign
template.IsCA = true
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return ca, fmt.Errorf("error generating rsa key: %s", err)
}
ca.Cert, ca.Key, err = getCertAndKey(template, priv, template, priv)
if err != nil {
return ca, err
}
return ca, nil
}
func generateSelfSignedCertificate(
cn string,
ips []interface{},
alternateDNS []interface{},
daysValid int,
) (certificate, error) {
cert := certificate{}
template, err := getBaseCertTemplate(cn, ips, alternateDNS, daysValid)
if err != nil {
return cert, err
}
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return cert, fmt.Errorf("error generating rsa key: %s", err)
}
cert.Cert, cert.Key, err = getCertAndKey(template, priv, template, priv)
if err != nil {
return cert, err
}
return cert, nil
}
func generateSignedCertificate(
cn string,
ips []interface{},
alternateDNS []interface{},
daysValid int,
ca certificate,
) (certificate, error) {
cert := certificate{}
decodedSignerCert, _ := pem.Decode([]byte(ca.Cert))
if decodedSignerCert == nil {
return cert, errors.New("unable to decode certificate")
}
signerCert, err := x509.ParseCertificate(decodedSignerCert.Bytes)
if err != nil {
return cert, fmt.Errorf(
"error parsing certificate: decodedSignerCert.Bytes: %s",
err,
)
}
decodedSignerKey, _ := pem.Decode([]byte(ca.Key))
if decodedSignerKey == nil {
return cert, errors.New("unable to decode key")
}
signerKey, err := x509.ParsePKCS1PrivateKey(decodedSignerKey.Bytes)
if err != nil {
return cert, fmt.Errorf(
"error parsing prive key: decodedSignerKey.Bytes: %s",
err,
)
}
template, err := getBaseCertTemplate(cn, ips, alternateDNS, daysValid)
if err != nil {
return cert, err
}
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return cert, fmt.Errorf("error generating rsa key: %s", err)
}
cert.Cert, cert.Key, err = getCertAndKey(
template,
priv,
signerCert,
signerKey,
)
if err != nil {
return cert, err
}
return cert, nil
}
func getCertAndKey(
template *x509.Certificate,
signeeKey *rsa.PrivateKey,
parent *x509.Certificate,
signingKey *rsa.PrivateKey,
) (string, string, error) {
derBytes, err := x509.CreateCertificate(
rand.Reader,
template,
parent,
&signeeKey.PublicKey,
signingKey,
)
if err != nil {
return "", "", fmt.Errorf("error creating certificate: %s", err)
}
certBuffer := bytes.Buffer{}
if err := pem.Encode(
&certBuffer,
&pem.Block{Type: "CERTIFICATE", Bytes: derBytes},
); err != nil {
return "", "", fmt.Errorf("error pem-encoding certificate: %s", err)
}
keyBuffer := bytes.Buffer{}
if err := pem.Encode(
&keyBuffer,
&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(signeeKey),
},
); err != nil {
return "", "", fmt.Errorf("error pem-encoding key: %s", err)
}
return string(certBuffer.Bytes()), string(keyBuffer.Bytes()), nil
}
func getBaseCertTemplate(
cn string,
ips []interface{},
alternateDNS []interface{},
daysValid int,
) (*x509.Certificate, error) {
ipAddresses, err := getNetIPs(ips)
if err != nil {
return nil, err
}
dnsNames, err := getAlternateDNSStrs(alternateDNS)
if err != nil {
return nil, err
}
serialNumberUpperBound := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberUpperBound)
if err != nil {
return nil, err
}
return &x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{
CommonName: cn,
},
IPAddresses: ipAddresses,
DNSNames: dnsNames,
NotBefore: time.Now(),
NotAfter: time.Now().Add(time.Hour * 24 * time.Duration(daysValid)),
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{
x509.ExtKeyUsageServerAuth,
x509.ExtKeyUsageClientAuth,
},
BasicConstraintsValid: true,
}, nil
}
func getNetIPs(ips []interface{}) ([]net.IP, error) {
if ips == nil {
return []net.IP{}, nil
}
var ipStr string
var ok bool
var netIP net.IP
netIPs := make([]net.IP, len(ips))
for i, ip := range ips {
ipStr, ok = ip.(string)
if !ok {
return nil, fmt.Errorf("error parsing ip: %v is not a string", ip)
}
netIP = net.ParseIP(ipStr)
if netIP == nil {
return nil, fmt.Errorf("error parsing ip: %s", ipStr)
}
netIPs[i] = netIP
}
return netIPs, nil
}
func getAlternateDNSStrs(alternateDNS []interface{}) ([]string, error) {
if alternateDNS == nil {
return []string{}, nil
}
var dnsStr string
var ok bool
alternateDNSStrs := make([]string, len(alternateDNS))
for i, dns := range alternateDNS {
dnsStr, ok = dns.(string)
if !ok {
return nil, fmt.Errorf(
"error processing alternate dns name: %v is not a string",
dns,
)
}
alternateDNSStrs[i] = dnsStr
}
return alternateDNSStrs, nil
}
func encryptAES(password string, plaintext string) (string, error) {
if plaintext == "" {
return "", nil
}
key := make([]byte, 32)
copy(key, []byte(password))
block, err := aes.NewCipher(key)
if err != nil {
return "", err
}
content := []byte(plaintext)
blockSize := block.BlockSize()
padding := blockSize - len(content)%blockSize
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
content = append(content, padtext...)
ciphertext := make([]byte, aes.BlockSize+len(content))
iv := ciphertext[:aes.BlockSize]
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
return "", err
}
mode := cipher.NewCBCEncrypter(block, iv)
mode.CryptBlocks(ciphertext[aes.BlockSize:], content)
return base64.StdEncoding.EncodeToString(ciphertext), nil
}
func decryptAES(password string, crypt64 string) (string, error) {
if crypt64 == "" {
return "", nil
}
key := make([]byte, 32)
copy(key, []byte(password))
crypt, err := base64.StdEncoding.DecodeString(crypt64)
if err != nil {
return "", err
}
block, err := aes.NewCipher(key)
if err != nil {
return "", err
}
iv := crypt[:aes.BlockSize]
crypt = crypt[aes.BlockSize:]
decrypted := make([]byte, len(crypt))
mode := cipher.NewCBCDecrypter(block, iv)
mode.CryptBlocks(decrypted, crypt)
return string(decrypted[:len(decrypted)-int(decrypted[len(decrypted)-1])]), nil
}

83
vendor/github.com/Masterminds/sprig/date.go generated vendored Normal file
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package sprig
import (
"strconv"
"time"
)
// Given a format and a date, format the date string.
//
// Date can be a `time.Time` or an `int, int32, int64`.
// In the later case, it is treated as seconds since UNIX
// epoch.
func date(fmt string, date interface{}) string {
return dateInZone(fmt, date, "Local")
}
func htmlDate(date interface{}) string {
return dateInZone("2006-01-02", date, "Local")
}
func htmlDateInZone(date interface{}, zone string) string {
return dateInZone("2006-01-02", date, zone)
}
func dateInZone(fmt string, date interface{}, zone string) string {
var t time.Time
switch date := date.(type) {
default:
t = time.Now()
case time.Time:
t = date
case *time.Time:
t = *date
case int64:
t = time.Unix(date, 0)
case int:
t = time.Unix(int64(date), 0)
case int32:
t = time.Unix(int64(date), 0)
}
loc, err := time.LoadLocation(zone)
if err != nil {
loc, _ = time.LoadLocation("UTC")
}
return t.In(loc).Format(fmt)
}
func dateModify(fmt string, date time.Time) time.Time {
d, err := time.ParseDuration(fmt)
if err != nil {
return date
}
return date.Add(d)
}
func dateAgo(date interface{}) string {
var t time.Time
switch date := date.(type) {
default:
t = time.Now()
case time.Time:
t = date
case int64:
t = time.Unix(date, 0)
case int:
t = time.Unix(int64(date), 0)
}
// Drop resolution to seconds
duration := time.Since(t).Round(time.Second)
return duration.String()
}
func toDate(fmt, str string) time.Time {
t, _ := time.ParseInLocation(fmt, str, time.Local)
return t
}
func unixEpoch(date time.Time) string {
return strconv.FormatInt(date.Unix(), 10)
}

83
vendor/github.com/Masterminds/sprig/defaults.go generated vendored Normal file
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package sprig
import (
"encoding/json"
"reflect"
)
// dfault checks whether `given` is set, and returns default if not set.
//
// This returns `d` if `given` appears not to be set, and `given` otherwise.
//
// For numeric types 0 is unset.
// For strings, maps, arrays, and slices, len() = 0 is considered unset.
// For bool, false is unset.
// Structs are never considered unset.
//
// For everything else, including pointers, a nil value is unset.
func dfault(d interface{}, given ...interface{}) interface{} {
if empty(given) || empty(given[0]) {
return d
}
return given[0]
}
// empty returns true if the given value has the zero value for its type.
func empty(given interface{}) bool {
g := reflect.ValueOf(given)
if !g.IsValid() {
return true
}
// Basically adapted from text/template.isTrue
switch g.Kind() {
default:
return g.IsNil()
case reflect.Array, reflect.Slice, reflect.Map, reflect.String:
return g.Len() == 0
case reflect.Bool:
return g.Bool() == false
case reflect.Complex64, reflect.Complex128:
return g.Complex() == 0
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return g.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return g.Uint() == 0
case reflect.Float32, reflect.Float64:
return g.Float() == 0
case reflect.Struct:
return false
}
}
// coalesce returns the first non-empty value.
func coalesce(v ...interface{}) interface{} {
for _, val := range v {
if !empty(val) {
return val
}
}
return nil
}
// toJson encodes an item into a JSON string
func toJson(v interface{}) string {
output, _ := json.Marshal(v)
return string(output)
}
// toPrettyJson encodes an item into a pretty (indented) JSON string
func toPrettyJson(v interface{}) string {
output, _ := json.MarshalIndent(v, "", " ")
return string(output)
}
// ternary returns the first value if the last value is true, otherwise returns the second value.
func ternary(vt interface{}, vf interface{}, v bool) interface{} {
if v {
return vt
}
return vf
}

119
vendor/github.com/Masterminds/sprig/dict.go generated vendored Normal file
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package sprig
import (
"github.com/imdario/mergo"
"github.com/mitchellh/copystructure"
)
func set(d map[string]interface{}, key string, value interface{}) map[string]interface{} {
d[key] = value
return d
}
func unset(d map[string]interface{}, key string) map[string]interface{} {
delete(d, key)
return d
}
func hasKey(d map[string]interface{}, key string) bool {
_, ok := d[key]
return ok
}
func pluck(key string, d ...map[string]interface{}) []interface{} {
res := []interface{}{}
for _, dict := range d {
if val, ok := dict[key]; ok {
res = append(res, val)
}
}
return res
}
func keys(dicts ...map[string]interface{}) []string {
k := []string{}
for _, dict := range dicts {
for key := range dict {
k = append(k, key)
}
}
return k
}
func pick(dict map[string]interface{}, keys ...string) map[string]interface{} {
res := map[string]interface{}{}
for _, k := range keys {
if v, ok := dict[k]; ok {
res[k] = v
}
}
return res
}
func omit(dict map[string]interface{}, keys ...string) map[string]interface{} {
res := map[string]interface{}{}
omit := make(map[string]bool, len(keys))
for _, k := range keys {
omit[k] = true
}
for k, v := range dict {
if _, ok := omit[k]; !ok {
res[k] = v
}
}
return res
}
func dict(v ...interface{}) map[string]interface{} {
dict := map[string]interface{}{}
lenv := len(v)
for i := 0; i < lenv; i += 2 {
key := strval(v[i])
if i+1 >= lenv {
dict[key] = ""
continue
}
dict[key] = v[i+1]
}
return dict
}
func merge(dst map[string]interface{}, srcs ...map[string]interface{}) interface{} {
for _, src := range srcs {
if err := mergo.Merge(&dst, src); err != nil {
// Swallow errors inside of a template.
return ""
}
}
return dst
}
func mergeOverwrite(dst map[string]interface{}, srcs ...map[string]interface{}) interface{} {
for _, src := range srcs {
if err := mergo.MergeWithOverwrite(&dst, src); err != nil {
// Swallow errors inside of a template.
return ""
}
}
return dst
}
func values(dict map[string]interface{}) []interface{} {
values := []interface{}{}
for _, value := range dict {
values = append(values, value)
}
return values
}
func deepCopy(i interface{}) interface{} {
c, err := copystructure.Copy(i)
if err != nil {
panic("deepCopy error: " + err.Error())
}
return c
}

19
vendor/github.com/Masterminds/sprig/doc.go generated vendored Normal file
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/*
Sprig: Template functions for Go.
This package contains a number of utility functions for working with data
inside of Go `html/template` and `text/template` files.
To add these functions, use the `template.Funcs()` method:
t := templates.New("foo").Funcs(sprig.FuncMap())
Note that you should add the function map before you parse any template files.
In several cases, Sprig reverses the order of arguments from the way they
appear in the standard library. This is to make it easier to pipe
arguments into functions.
See http://masterminds.github.io/sprig/ for more detailed documentation on each of the available functions.
*/
package sprig

306
vendor/github.com/Masterminds/sprig/functions.go generated vendored Normal file
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package sprig
import (
"errors"
"html/template"
"os"
"path"
"reflect"
"strconv"
"strings"
ttemplate "text/template"
"time"
util "github.com/Masterminds/goutils"
"github.com/huandu/xstrings"
)
// Produce the function map.
//
// Use this to pass the functions into the template engine:
//
// tpl := template.New("foo").Funcs(sprig.FuncMap()))
//
func FuncMap() template.FuncMap {
return HtmlFuncMap()
}
// HermeticTxtFuncMap returns a 'text/template'.FuncMap with only repeatable functions.
func HermeticTxtFuncMap() ttemplate.FuncMap {
r := TxtFuncMap()
for _, name := range nonhermeticFunctions {
delete(r, name)
}
return r
}
// HermeticHtmlFuncMap returns an 'html/template'.Funcmap with only repeatable functions.
func HermeticHtmlFuncMap() template.FuncMap {
r := HtmlFuncMap()
for _, name := range nonhermeticFunctions {
delete(r, name)
}
return r
}
// TxtFuncMap returns a 'text/template'.FuncMap
func TxtFuncMap() ttemplate.FuncMap {
return ttemplate.FuncMap(GenericFuncMap())
}
// HtmlFuncMap returns an 'html/template'.Funcmap
func HtmlFuncMap() template.FuncMap {
return template.FuncMap(GenericFuncMap())
}
// GenericFuncMap returns a copy of the basic function map as a map[string]interface{}.
func GenericFuncMap() map[string]interface{} {
gfm := make(map[string]interface{}, len(genericMap))
for k, v := range genericMap {
gfm[k] = v
}
return gfm
}
// These functions are not guaranteed to evaluate to the same result for given input, because they
// refer to the environemnt or global state.
var nonhermeticFunctions = []string{
// Date functions
"date",
"date_in_zone",
"date_modify",
"now",
"htmlDate",
"htmlDateInZone",
"dateInZone",
"dateModify",
// Strings
"randAlphaNum",
"randAlpha",
"randAscii",
"randNumeric",
"uuidv4",
// OS
"env",
"expandenv",
// Network
"getHostByName",
}
var genericMap = map[string]interface{}{
"hello": func() string { return "Hello!" },
// Date functions
"date": date,
"date_in_zone": dateInZone,
"date_modify": dateModify,
"now": func() time.Time { return time.Now() },
"htmlDate": htmlDate,
"htmlDateInZone": htmlDateInZone,
"dateInZone": dateInZone,
"dateModify": dateModify,
"ago": dateAgo,
"toDate": toDate,
"unixEpoch": unixEpoch,
// Strings
"abbrev": abbrev,
"abbrevboth": abbrevboth,
"trunc": trunc,
"trim": strings.TrimSpace,
"upper": strings.ToUpper,
"lower": strings.ToLower,
"title": strings.Title,
"untitle": untitle,
"substr": substring,
// Switch order so that "foo" | repeat 5
"repeat": func(count int, str string) string { return strings.Repeat(str, count) },
// Deprecated: Use trimAll.
"trimall": func(a, b string) string { return strings.Trim(b, a) },
// Switch order so that "$foo" | trimall "$"
"trimAll": func(a, b string) string { return strings.Trim(b, a) },
"trimSuffix": func(a, b string) string { return strings.TrimSuffix(b, a) },
"trimPrefix": func(a, b string) string { return strings.TrimPrefix(b, a) },
"nospace": util.DeleteWhiteSpace,
"initials": initials,
"randAlphaNum": randAlphaNumeric,
"randAlpha": randAlpha,
"randAscii": randAscii,
"randNumeric": randNumeric,
"swapcase": util.SwapCase,
"shuffle": xstrings.Shuffle,
"snakecase": xstrings.ToSnakeCase,
"camelcase": xstrings.ToCamelCase,
"kebabcase": xstrings.ToKebabCase,
"wrap": func(l int, s string) string { return util.Wrap(s, l) },
"wrapWith": func(l int, sep, str string) string { return util.WrapCustom(str, l, sep, true) },
// Switch order so that "foobar" | contains "foo"
"contains": func(substr string, str string) bool { return strings.Contains(str, substr) },
"hasPrefix": func(substr string, str string) bool { return strings.HasPrefix(str, substr) },
"hasSuffix": func(substr string, str string) bool { return strings.HasSuffix(str, substr) },
"quote": quote,
"squote": squote,
"cat": cat,
"indent": indent,
"nindent": nindent,
"replace": replace,
"plural": plural,
"sha1sum": sha1sum,
"sha256sum": sha256sum,
"adler32sum": adler32sum,
"toString": strval,
// Wrap Atoi to stop errors.
"atoi": func(a string) int { i, _ := strconv.Atoi(a); return i },
"int64": toInt64,
"int": toInt,
"float64": toFloat64,
"toDecimal": toDecimal,
//"gt": func(a, b int) bool {return a > b},
//"gte": func(a, b int) bool {return a >= b},
//"lt": func(a, b int) bool {return a < b},
//"lte": func(a, b int) bool {return a <= b},
// split "/" foo/bar returns map[int]string{0: foo, 1: bar}
"split": split,
"splitList": func(sep, orig string) []string { return strings.Split(orig, sep) },
// splitn "/" foo/bar/fuu returns map[int]string{0: foo, 1: bar/fuu}
"splitn": splitn,
"toStrings": strslice,
"until": until,
"untilStep": untilStep,
// VERY basic arithmetic.
"add1": func(i interface{}) int64 { return toInt64(i) + 1 },
"add": func(i ...interface{}) int64 {
var a int64 = 0
for _, b := range i {
a += toInt64(b)
}
return a
},
"sub": func(a, b interface{}) int64 { return toInt64(a) - toInt64(b) },
"div": func(a, b interface{}) int64 { return toInt64(a) / toInt64(b) },
"mod": func(a, b interface{}) int64 { return toInt64(a) % toInt64(b) },
"mul": func(a interface{}, v ...interface{}) int64 {
val := toInt64(a)
for _, b := range v {
val = val * toInt64(b)
}
return val
},
"biggest": max,
"max": max,
"min": min,
"ceil": ceil,
"floor": floor,
"round": round,
// string slices. Note that we reverse the order b/c that's better
// for template processing.
"join": join,
"sortAlpha": sortAlpha,
// Defaults
"default": dfault,
"empty": empty,
"coalesce": coalesce,
"compact": compact,
"deepCopy": deepCopy,
"toJson": toJson,
"toPrettyJson": toPrettyJson,
"ternary": ternary,
// Reflection
"typeOf": typeOf,
"typeIs": typeIs,
"typeIsLike": typeIsLike,
"kindOf": kindOf,
"kindIs": kindIs,
"deepEqual": reflect.DeepEqual,
// OS:
"env": func(s string) string { return os.Getenv(s) },
"expandenv": func(s string) string { return os.ExpandEnv(s) },
// Network:
"getHostByName": getHostByName,
// File Paths:
"base": path.Base,
"dir": path.Dir,
"clean": path.Clean,
"ext": path.Ext,
"isAbs": path.IsAbs,
// Encoding:
"b64enc": base64encode,
"b64dec": base64decode,
"b32enc": base32encode,
"b32dec": base32decode,
// Data Structures:
"tuple": list, // FIXME: with the addition of append/prepend these are no longer immutable.
"list": list,
"dict": dict,
"set": set,
"unset": unset,
"hasKey": hasKey,
"pluck": pluck,
"keys": keys,
"pick": pick,
"omit": omit,
"merge": merge,
"mergeOverwrite": mergeOverwrite,
"values": values,
"append": push, "push": push,
"prepend": prepend,
"first": first,
"rest": rest,
"last": last,
"initial": initial,
"reverse": reverse,
"uniq": uniq,
"without": without,
"has": has,
"slice": slice,
"concat": concat,
// Crypto:
"genPrivateKey": generatePrivateKey,
"derivePassword": derivePassword,
"buildCustomCert": buildCustomCertificate,
"genCA": generateCertificateAuthority,
"genSelfSignedCert": generateSelfSignedCertificate,
"genSignedCert": generateSignedCertificate,
"encryptAES": encryptAES,
"decryptAES": decryptAES,
// UUIDs:
"uuidv4": uuidv4,
// SemVer:
"semver": semver,
"semverCompare": semverCompare,
// Flow Control:
"fail": func(msg string) (string, error) { return "", errors.New(msg) },
// Regex
"regexMatch": regexMatch,
"regexFindAll": regexFindAll,
"regexFind": regexFind,
"regexReplaceAll": regexReplaceAll,
"regexReplaceAllLiteral": regexReplaceAllLiteral,
"regexSplit": regexSplit,
// URLs:
"urlParse": urlParse,
"urlJoin": urlJoin,
}

19
vendor/github.com/Masterminds/sprig/glide.yaml generated vendored Normal file
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package: github.com/Masterminds/sprig
import:
- package: github.com/Masterminds/goutils
version: ^1.0.0
- package: github.com/google/uuid
version: ^1.0.0
- package: golang.org/x/crypto
subpackages:
- scrypt
- package: github.com/Masterminds/semver
version: ^v1.2.2
- package: github.com/stretchr/testify
version: ^v1.2.2
- package: github.com/imdario/mergo
version: ~0.3.7
- package: github.com/huandu/xstrings
version: ^1.2
- package: github.com/mitchellh/copystructure
version: ^1.0.0

311
vendor/github.com/Masterminds/sprig/list.go generated vendored Normal file
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package sprig
import (
"fmt"
"reflect"
"sort"
)
// Reflection is used in these functions so that slices and arrays of strings,
// ints, and other types not implementing []interface{} can be worked with.
// For example, this is useful if you need to work on the output of regexs.
func list(v ...interface{}) []interface{} {
return v
}
func push(list interface{}, v interface{}) []interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
nl := make([]interface{}, l)
for i := 0; i < l; i++ {
nl[i] = l2.Index(i).Interface()
}
return append(nl, v)
default:
panic(fmt.Sprintf("Cannot push on type %s", tp))
}
}
func prepend(list interface{}, v interface{}) []interface{} {
//return append([]interface{}{v}, list...)
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
nl := make([]interface{}, l)
for i := 0; i < l; i++ {
nl[i] = l2.Index(i).Interface()
}
return append([]interface{}{v}, nl...)
default:
panic(fmt.Sprintf("Cannot prepend on type %s", tp))
}
}
func last(list interface{}) interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
if l == 0 {
return nil
}
return l2.Index(l - 1).Interface()
default:
panic(fmt.Sprintf("Cannot find last on type %s", tp))
}
}
func first(list interface{}) interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
if l == 0 {
return nil
}
return l2.Index(0).Interface()
default:
panic(fmt.Sprintf("Cannot find first on type %s", tp))
}
}
func rest(list interface{}) []interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
if l == 0 {
return nil
}
nl := make([]interface{}, l-1)
for i := 1; i < l; i++ {
nl[i-1] = l2.Index(i).Interface()
}
return nl
default:
panic(fmt.Sprintf("Cannot find rest on type %s", tp))
}
}
func initial(list interface{}) []interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
if l == 0 {
return nil
}
nl := make([]interface{}, l-1)
for i := 0; i < l-1; i++ {
nl[i] = l2.Index(i).Interface()
}
return nl
default:
panic(fmt.Sprintf("Cannot find initial on type %s", tp))
}
}
func sortAlpha(list interface{}) []string {
k := reflect.Indirect(reflect.ValueOf(list)).Kind()
switch k {
case reflect.Slice, reflect.Array:
a := strslice(list)
s := sort.StringSlice(a)
s.Sort()
return s
}
return []string{strval(list)}
}
func reverse(v interface{}) []interface{} {
tp := reflect.TypeOf(v).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(v)
l := l2.Len()
// We do not sort in place because the incoming array should not be altered.
nl := make([]interface{}, l)
for i := 0; i < l; i++ {
nl[l-i-1] = l2.Index(i).Interface()
}
return nl
default:
panic(fmt.Sprintf("Cannot find reverse on type %s", tp))
}
}
func compact(list interface{}) []interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
nl := []interface{}{}
var item interface{}
for i := 0; i < l; i++ {
item = l2.Index(i).Interface()
if !empty(item) {
nl = append(nl, item)
}
}
return nl
default:
panic(fmt.Sprintf("Cannot compact on type %s", tp))
}
}
func uniq(list interface{}) []interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
dest := []interface{}{}
var item interface{}
for i := 0; i < l; i++ {
item = l2.Index(i).Interface()
if !inList(dest, item) {
dest = append(dest, item)
}
}
return dest
default:
panic(fmt.Sprintf("Cannot find uniq on type %s", tp))
}
}
func inList(haystack []interface{}, needle interface{}) bool {
for _, h := range haystack {
if reflect.DeepEqual(needle, h) {
return true
}
}
return false
}
func without(list interface{}, omit ...interface{}) []interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
res := []interface{}{}
var item interface{}
for i := 0; i < l; i++ {
item = l2.Index(i).Interface()
if !inList(omit, item) {
res = append(res, item)
}
}
return res
default:
panic(fmt.Sprintf("Cannot find without on type %s", tp))
}
}
func has(needle interface{}, haystack interface{}) bool {
if haystack == nil {
return false
}
tp := reflect.TypeOf(haystack).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(haystack)
var item interface{}
l := l2.Len()
for i := 0; i < l; i++ {
item = l2.Index(i).Interface()
if reflect.DeepEqual(needle, item) {
return true
}
}
return false
default:
panic(fmt.Sprintf("Cannot find has on type %s", tp))
}
}
// $list := [1, 2, 3, 4, 5]
// slice $list -> list[0:5] = list[:]
// slice $list 0 3 -> list[0:3] = list[:3]
// slice $list 3 5 -> list[3:5]
// slice $list 3 -> list[3:5] = list[3:]
func slice(list interface{}, indices ...interface{}) interface{} {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
l := l2.Len()
if l == 0 {
return nil
}
var start, end int
if len(indices) > 0 {
start = toInt(indices[0])
}
if len(indices) < 2 {
end = l
} else {
end = toInt(indices[1])
}
return l2.Slice(start, end).Interface()
default:
panic(fmt.Sprintf("list should be type of slice or array but %s", tp))
}
}
func concat(lists ...interface{}) interface{} {
var res []interface{}
for _, list := range lists {
tp := reflect.TypeOf(list).Kind()
switch tp {
case reflect.Slice, reflect.Array:
l2 := reflect.ValueOf(list)
for i := 0; i < l2.Len(); i++ {
res = append(res, l2.Index(i).Interface())
}
default:
panic(fmt.Sprintf("Cannot concat type %s as list", tp))
}
}
return res
}

12
vendor/github.com/Masterminds/sprig/network.go generated vendored Normal file
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package sprig
import (
"math/rand"
"net"
)
func getHostByName(name string) string {
addrs, _ := net.LookupHost(name)
//TODO: add error handing when release v3 cames out
return addrs[rand.Intn(len(addrs))]
}

169
vendor/github.com/Masterminds/sprig/numeric.go generated vendored Normal file
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package sprig
import (
"fmt"
"math"
"reflect"
"strconv"
)
// toFloat64 converts 64-bit floats
func toFloat64(v interface{}) float64 {
if str, ok := v.(string); ok {
iv, err := strconv.ParseFloat(str, 64)
if err != nil {
return 0
}
return iv
}
val := reflect.Indirect(reflect.ValueOf(v))
switch val.Kind() {
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return float64(val.Int())
case reflect.Uint8, reflect.Uint16, reflect.Uint32:
return float64(val.Uint())
case reflect.Uint, reflect.Uint64:
return float64(val.Uint())
case reflect.Float32, reflect.Float64:
return val.Float()
case reflect.Bool:
if val.Bool() == true {
return 1
}
return 0
default:
return 0
}
}
func toInt(v interface{}) int {
//It's not optimal. Bud I don't want duplicate toInt64 code.
return int(toInt64(v))
}
// toInt64 converts integer types to 64-bit integers
func toInt64(v interface{}) int64 {
if str, ok := v.(string); ok {
iv, err := strconv.ParseInt(str, 10, 64)
if err != nil {
return 0
}
return iv
}
val := reflect.Indirect(reflect.ValueOf(v))
switch val.Kind() {
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return val.Int()
case reflect.Uint8, reflect.Uint16, reflect.Uint32:
return int64(val.Uint())
case reflect.Uint, reflect.Uint64:
tv := val.Uint()
if tv <= math.MaxInt64 {
return int64(tv)
}
// TODO: What is the sensible thing to do here?
return math.MaxInt64
case reflect.Float32, reflect.Float64:
return int64(val.Float())
case reflect.Bool:
if val.Bool() == true {
return 1
}
return 0
default:
return 0
}
}
func max(a interface{}, i ...interface{}) int64 {
aa := toInt64(a)
for _, b := range i {
bb := toInt64(b)
if bb > aa {
aa = bb
}
}
return aa
}
func min(a interface{}, i ...interface{}) int64 {
aa := toInt64(a)
for _, b := range i {
bb := toInt64(b)
if bb < aa {
aa = bb
}
}
return aa
}
func until(count int) []int {
step := 1
if count < 0 {
step = -1
}
return untilStep(0, count, step)
}
func untilStep(start, stop, step int) []int {
v := []int{}
if stop < start {
if step >= 0 {
return v
}
for i := start; i > stop; i += step {
v = append(v, i)
}
return v
}
if step <= 0 {
return v
}
for i := start; i < stop; i += step {
v = append(v, i)
}
return v
}
func floor(a interface{}) float64 {
aa := toFloat64(a)
return math.Floor(aa)
}
func ceil(a interface{}) float64 {
aa := toFloat64(a)
return math.Ceil(aa)
}
func round(a interface{}, p int, r_opt ...float64) float64 {
roundOn := .5
if len(r_opt) > 0 {
roundOn = r_opt[0]
}
val := toFloat64(a)
places := toFloat64(p)
var round float64
pow := math.Pow(10, places)
digit := pow * val
_, div := math.Modf(digit)
if div >= roundOn {
round = math.Ceil(digit)
} else {
round = math.Floor(digit)
}
return round / pow
}
// converts unix octal to decimal
func toDecimal(v interface{}) int64 {
result, err := strconv.ParseInt(fmt.Sprint(v), 8, 64)
if err != nil {
return 0
}
return result
}

28
vendor/github.com/Masterminds/sprig/reflect.go generated vendored Normal file
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package sprig
import (
"fmt"
"reflect"
)
// typeIs returns true if the src is the type named in target.
func typeIs(target string, src interface{}) bool {
return target == typeOf(src)
}
func typeIsLike(target string, src interface{}) bool {
t := typeOf(src)
return target == t || "*"+target == t
}
func typeOf(src interface{}) string {
return fmt.Sprintf("%T", src)
}
func kindIs(target string, src interface{}) bool {
return target == kindOf(src)
}
func kindOf(src interface{}) string {
return reflect.ValueOf(src).Kind().String()
}

35
vendor/github.com/Masterminds/sprig/regex.go generated vendored Normal file
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package sprig
import (
"regexp"
)
func regexMatch(regex string, s string) bool {
match, _ := regexp.MatchString(regex, s)
return match
}
func regexFindAll(regex string, s string, n int) []string {
r := regexp.MustCompile(regex)
return r.FindAllString(s, n)
}
func regexFind(regex string, s string) string {
r := regexp.MustCompile(regex)
return r.FindString(s)
}
func regexReplaceAll(regex string, s string, repl string) string {
r := regexp.MustCompile(regex)
return r.ReplaceAllString(s, repl)
}
func regexReplaceAllLiteral(regex string, s string, repl string) string {
r := regexp.MustCompile(regex)
return r.ReplaceAllLiteralString(s, repl)
}
func regexSplit(regex string, s string, n int) []string {
r := regexp.MustCompile(regex)
return r.Split(s, n)
}

23
vendor/github.com/Masterminds/sprig/semver.go generated vendored Normal file
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@ -0,0 +1,23 @@
package sprig
import (
sv2 "github.com/Masterminds/semver"
)
func semverCompare(constraint, version string) (bool, error) {
c, err := sv2.NewConstraint(constraint)
if err != nil {
return false, err
}
v, err := sv2.NewVersion(version)
if err != nil {
return false, err
}
return c.Check(v), nil
}
func semver(version string) (*sv2.Version, error) {
return sv2.NewVersion(version)
}

233
vendor/github.com/Masterminds/sprig/strings.go generated vendored Normal file
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package sprig
import (
"encoding/base32"
"encoding/base64"
"fmt"
"reflect"
"strconv"
"strings"
util "github.com/Masterminds/goutils"
)
func base64encode(v string) string {
return base64.StdEncoding.EncodeToString([]byte(v))
}
func base64decode(v string) string {
data, err := base64.StdEncoding.DecodeString(v)
if err != nil {
return err.Error()
}
return string(data)
}
func base32encode(v string) string {
return base32.StdEncoding.EncodeToString([]byte(v))
}
func base32decode(v string) string {
data, err := base32.StdEncoding.DecodeString(v)
if err != nil {
return err.Error()
}
return string(data)
}
func abbrev(width int, s string) string {
if width < 4 {
return s
}
r, _ := util.Abbreviate(s, width)
return r
}
func abbrevboth(left, right int, s string) string {
if right < 4 || left > 0 && right < 7 {
return s
}
r, _ := util.AbbreviateFull(s, left, right)
return r
}
func initials(s string) string {
// Wrap this just to eliminate the var args, which templates don't do well.
return util.Initials(s)
}
func randAlphaNumeric(count int) string {
// It is not possible, it appears, to actually generate an error here.
r, _ := util.CryptoRandomAlphaNumeric(count)
return r
}
func randAlpha(count int) string {
r, _ := util.CryptoRandomAlphabetic(count)
return r
}
func randAscii(count int) string {
r, _ := util.CryptoRandomAscii(count)
return r
}
func randNumeric(count int) string {
r, _ := util.CryptoRandomNumeric(count)
return r
}
func untitle(str string) string {
return util.Uncapitalize(str)
}
func quote(str ...interface{}) string {
out := make([]string, 0, len(str))
for _, s := range str {
if s != nil {
out = append(out, fmt.Sprintf("%q", strval(s)))
}
}
return strings.Join(out, " ")
}
func squote(str ...interface{}) string {
out := make([]string, 0, len(str))
for _, s := range str {
if s != nil {
out = append(out, fmt.Sprintf("'%v'", s))
}
}
return strings.Join(out, " ")
}
func cat(v ...interface{}) string {
v = removeNilElements(v)
r := strings.TrimSpace(strings.Repeat("%v ", len(v)))
return fmt.Sprintf(r, v...)
}
func indent(spaces int, v string) string {
pad := strings.Repeat(" ", spaces)
return pad + strings.Replace(v, "\n", "\n"+pad, -1)
}
func nindent(spaces int, v string) string {
return "\n" + indent(spaces, v)
}
func replace(old, new, src string) string {
return strings.Replace(src, old, new, -1)
}
func plural(one, many string, count int) string {
if count == 1 {
return one
}
return many
}
func strslice(v interface{}) []string {
switch v := v.(type) {
case []string:
return v
case []interface{}:
b := make([]string, 0, len(v))
for _, s := range v {
if s != nil {
b = append(b, strval(s))
}
}
return b
default:
val := reflect.ValueOf(v)
switch val.Kind() {
case reflect.Array, reflect.Slice:
l := val.Len()
b := make([]string, 0, l)
for i := 0; i < l; i++ {
value := val.Index(i).Interface()
if value != nil {
b = append(b, strval(value))
}
}
return b
default:
if v == nil {
return []string{}
} else {
return []string{strval(v)}
}
}
}
}
func removeNilElements(v []interface{}) []interface{} {
newSlice := make([]interface{}, 0, len(v))
for _, i := range v {
if i != nil {
newSlice = append(newSlice, i)
}
}
return newSlice
}
func strval(v interface{}) string {
switch v := v.(type) {
case string:
return v
case []byte:
return string(v)
case error:
return v.Error()
case fmt.Stringer:
return v.String()
default:
return fmt.Sprintf("%v", v)
}
}
func trunc(c int, s string) string {
if len(s) <= c {
return s
}
return s[0:c]
}
func join(sep string, v interface{}) string {
return strings.Join(strslice(v), sep)
}
func split(sep, orig string) map[string]string {
parts := strings.Split(orig, sep)
res := make(map[string]string, len(parts))
for i, v := range parts {
res["_"+strconv.Itoa(i)] = v
}
return res
}
func splitn(sep string, n int, orig string) map[string]string {
parts := strings.SplitN(orig, sep, n)
res := make(map[string]string, len(parts))
for i, v := range parts {
res["_"+strconv.Itoa(i)] = v
}
return res
}
// substring creates a substring of the given string.
//
// If start is < 0, this calls string[:end].
//
// If start is >= 0 and end < 0 or end bigger than s length, this calls string[start:]
//
// Otherwise, this calls string[start, end].
func substring(start, end int, s string) string {
if start < 0 {
return s[:end]
}
if end < 0 || end > len(s) {
return s[start:]
}
return s[start:end]
}

66
vendor/github.com/Masterminds/sprig/url.go generated vendored Normal file
View File

@ -0,0 +1,66 @@
package sprig
import (
"fmt"
"net/url"
"reflect"
)
func dictGetOrEmpty(dict map[string]interface{}, key string) string {
value, ok := dict[key]; if !ok {
return ""
}
tp := reflect.TypeOf(value).Kind()
if tp != reflect.String {
panic(fmt.Sprintf("unable to parse %s key, must be of type string, but %s found", key, tp.String()))
}
return reflect.ValueOf(value).String()
}
// parses given URL to return dict object
func urlParse(v string) map[string]interface{} {
dict := map[string]interface{}{}
parsedUrl, err := url.Parse(v)
if err != nil {
panic(fmt.Sprintf("unable to parse url: %s", err))
}
dict["scheme"] = parsedUrl.Scheme
dict["host"] = parsedUrl.Host
dict["hostname"] = parsedUrl.Hostname()
dict["path"] = parsedUrl.Path
dict["query"] = parsedUrl.RawQuery
dict["opaque"] = parsedUrl.Opaque
dict["fragment"] = parsedUrl.Fragment
if parsedUrl.User != nil {
dict["userinfo"] = parsedUrl.User.String()
} else {
dict["userinfo"] = ""
}
return dict
}
// join given dict to URL string
func urlJoin(d map[string]interface{}) string {
resUrl := url.URL{
Scheme: dictGetOrEmpty(d, "scheme"),
Host: dictGetOrEmpty(d, "host"),
Path: dictGetOrEmpty(d, "path"),
RawQuery: dictGetOrEmpty(d, "query"),
Opaque: dictGetOrEmpty(d, "opaque"),
Fragment: dictGetOrEmpty(d, "fragment"),
}
userinfo := dictGetOrEmpty(d, "userinfo")
var user *url.Userinfo = nil
if userinfo != "" {
tempUrl, err := url.Parse(fmt.Sprintf("proto://%s@host", userinfo))
if err != nil {
panic(fmt.Sprintf("unable to parse userinfo in dict: %s", err))
}
user = tempUrl.User
}
resUrl.User = user
return resUrl.String()
}