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vendor: update buildkit to master@31c870e82a48

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Signed-off-by: Justin Chadwell <me@jedevc.com>
This commit is contained in:
Justin Chadwell
2023-05-15 18:32:31 +01:00
parent 167cd16acb
commit e61a8cf637
269 changed files with 25798 additions and 3371 deletions
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
# ignore .idea
.idea

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Copyright (c) 2012 The Go Authors. All rights reserved.
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# go-pathspec
[![build](https://github.com/shibumi/go-pathspec/workflows/build/badge.svg)](https://github.com/shibumi/go-pathspec/actions?query=workflow%3Abuild) [![Coverage Status](https://coveralls.io/repos/github/shibumi/go-pathspec/badge.svg)](https://coveralls.io/github/shibumi/go-pathspec) [![PkgGoDev](https://pkg.go.dev/badge/github.com/shibumi/go-pathspec)](https://pkg.go.dev/github.com/shibumi/go-pathspec)
go-pathspec implements gitignore-style pattern matching for paths.
## Alternatives
There are a few alternatives, that try to be gitignore compatible or even state
gitignore compatibility:
### https://github.com/go-git/go-git
go-git states it would be gitignore compatible, but actually they are missing a few
special cases. This issue describes one of the not working patterns: https://github.com/go-git/go-git/issues/108
What does not work is global filename pattern matching. Consider the following
`.gitignore` file:
```gitignore
# gitignore test file
parse.go
```
Then `parse.go` should match on all filenames called `parse.go`. You can test this via
this shell script:
```shell
mkdir -p /tmp/test/internal/util
touch /tmp/test/internal/util/parse.go
cd /tmp/test/
git init
echo "parse.go" > .gitignore
```
With git `parse.go` will be excluded. The go-git implementation behaves different.
### https://github.com/monochromegane/go-gitignore
monochromegane's go-gitignore does not support the use of `**`-operators.
This is not consistent to real gitignore behavior, too.
## Authors
Sander van Harmelen (<sander@xanzy.io>)
Christian Rebischke (<chris@shibumi.dev>)

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//
// Copyright 2014, Sander van Harmelen
// Copyright 2020, Christian Rebischke
//
// 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 pathspec implements git compatible gitignore pattern matching.
// See the description below, if you are unfamiliar with it:
//
// A blank line matches no files, so it can serve as a separator for readability.
//
// A line starting with # serves as a comment. Put a backslash ("\") in front of
// the first hash for patterns that begin with a hash.
//
// An optional prefix "!" which negates the pattern; any matching file excluded
// by a previous pattern will become included again. If a negated pattern matches,
// this will override lower precedence patterns sources. Put a backslash ("\") in
// front of the first "!" for patterns that begin with a literal "!", for example,
// "\!important!.txt".
//
// If the pattern ends with a slash, it is removed for the purpose of the following
// description, but it would only find a match with a directory. In other words,
// foo/ will match a directory foo and paths underneath it, but will not match a
// regular file or a symbolic link foo (this is consistent with the way how pathspec
// works in general in Git).
//
// If the pattern does not contain a slash /, Git treats it as a shell glob pattern
// and checks for a match against the pathname relative to the location of the
// .gitignore file (relative to the toplevel of the work tree if not from a
// .gitignore file).
//
// Otherwise, Git treats the pattern as a shell glob suitable for consumption by
// fnmatch(3) with the FNM_PATHNAME flag: wildcards in the pattern will not match
// a / in the pathname. For example, "Documentation/*.html" matches
// "Documentation/git.html" but not "Documentation/ppc/ppc.html" or/
// "tools/perf/Documentation/perf.html".
//
// A leading slash matches the beginning of the pathname. For example, "/*.c"
// matches "cat-file.c" but not "mozilla-sha1/sha1.c".
//
// Two consecutive asterisks ("**") in patterns matched against full pathname
// may have special meaning:
//
// A leading "**" followed by a slash means match in all directories. For example,
// "**/foo" matches file or directory "foo" anywhere, the same as pattern "foo".
// "**/foo/bar" matches file or directory "bar" anywhere that is directly under
// directory "foo".
//
// A trailing "/" matches everything inside. For example, "abc/" matches all files
// inside directory "abc", relative to the location of the .gitignore file, with
// infinite depth.
//
// A slash followed by two consecutive asterisks then a slash matches zero or more
// directories. For example, "a/**/b" matches "a/b", "a/x/b", "a/x/y/b" and so on.
//
// Other consecutive asterisks are considered invalid.
package pathspec
import (
"bufio"
"bytes"
"io"
"path/filepath"
"regexp"
"strings"
)
type gitIgnorePattern struct {
Regex string
Include bool
}
// GitIgnore uses a string slice of patterns for matching on a filepath string.
// On match it returns true, otherwise false. On error it passes the error through.
func GitIgnore(patterns []string, name string) (ignore bool, err error) {
for _, pattern := range patterns {
p := parsePattern(pattern)
// Convert Windows paths to Unix paths
name = filepath.ToSlash(name)
match, err := regexp.MatchString(p.Regex, name)
if err != nil {
return ignore, err
}
if match {
if p.Include {
return false, nil
}
ignore = true
}
}
return ignore, nil
}
// ReadGitIgnore implements the io.Reader interface for reading a gitignore file
// line by line. It behaves exactly like the GitIgnore function. The only difference
// is that GitIgnore works on a string slice.
//
// ReadGitIgnore returns a boolean value if we match or not and an error.
func ReadGitIgnore(content io.Reader, name string) (ignore bool, err error) {
scanner := bufio.NewScanner(content)
for scanner.Scan() {
pattern := strings.TrimSpace(scanner.Text())
if len(pattern) == 0 || pattern[0] == '#' {
continue
}
p := parsePattern(pattern)
// Convert Windows paths to Unix paths
name = filepath.ToSlash(name)
match, err := regexp.MatchString(p.Regex, name)
if err != nil {
return ignore, err
}
if match {
if p.Include {
return false, scanner.Err()
}
ignore = true
}
}
return ignore, scanner.Err()
}
func parsePattern(pattern string) *gitIgnorePattern {
p := &gitIgnorePattern{}
// An optional prefix "!" which negates the pattern; any matching file
// excluded by a previous pattern will become included again.
if strings.HasPrefix(pattern, "!") {
pattern = pattern[1:]
p.Include = true
} else {
p.Include = false
}
// Remove leading back-slash escape for escaped hash ('#') or
// exclamation mark ('!').
if strings.HasPrefix(pattern, "\\") {
pattern = pattern[1:]
}
// Split pattern into segments.
patternSegs := strings.Split(pattern, "/")
// A pattern beginning with a slash ('/') will only match paths
// directly on the root directory instead of any descendant paths.
// So remove empty first segment to make pattern absoluut to root.
// A pattern without a beginning slash ('/') will match any
// descendant path. This is equivilent to "**/{pattern}". So
// prepend with double-asterisks to make pattern relative to
// root.
if patternSegs[0] == "" {
patternSegs = patternSegs[1:]
} else if patternSegs[0] != "**" {
patternSegs = append([]string{"**"}, patternSegs...)
}
// A pattern ending with a slash ('/') will match all descendant
// paths of if it is a directory but not if it is a regular file.
// This is equivalent to "{pattern}/**". So, set last segment to
// double asterisks to include all descendants.
if patternSegs[len(patternSegs)-1] == "" {
patternSegs[len(patternSegs)-1] = "**"
}
// Build regular expression from pattern.
var expr bytes.Buffer
expr.WriteString("^")
needSlash := false
for i, seg := range patternSegs {
switch seg {
case "**":
switch {
case i == 0 && i == len(patternSegs)-1:
// A pattern consisting solely of double-asterisks ('**')
// will match every path.
expr.WriteString(".+")
case i == 0:
// A normalized pattern beginning with double-asterisks
// ('**') will match any leading path segments.
expr.WriteString("(?:.+/)?")
needSlash = false
case i == len(patternSegs)-1:
// A normalized pattern ending with double-asterisks ('**')
// will match any trailing path segments.
expr.WriteString("/.+")
default:
// A pattern with inner double-asterisks ('**') will match
// multiple (or zero) inner path segments.
expr.WriteString("(?:/.+)?")
needSlash = true
}
case "*":
// Match single path segment.
if needSlash {
expr.WriteString("/")
}
expr.WriteString("[^/]+")
needSlash = true
default:
// Match segment glob pattern.
if needSlash {
expr.WriteString("/")
}
expr.WriteString(translateGlob(seg))
needSlash = true
}
}
expr.WriteString("$")
p.Regex = expr.String()
return p
}
// NOTE: This is derived from `fnmatch.translate()` and is similar to
// the POSIX function `fnmatch()` with the `FNM_PATHNAME` flag set.
func translateGlob(glob string) string {
var regex bytes.Buffer
escape := false
for i := 0; i < len(glob); i++ {
char := glob[i]
// Escape the character.
switch {
case escape:
escape = false
regex.WriteString(regexp.QuoteMeta(string(char)))
case char == '\\':
// Escape character, escape next character.
escape = true
case char == '*':
// Multi-character wildcard. Match any string (except slashes),
// including an empty string.
regex.WriteString("[^/]*")
case char == '?':
// Single-character wildcard. Match any single character (except
// a slash).
regex.WriteString("[^/]")
case char == '[':
regex.WriteString(translateBracketExpression(&i, glob))
default:
// Regular character, escape it for regex.
regex.WriteString(regexp.QuoteMeta(string(char)))
}
}
return regex.String()
}
// Bracket expression wildcard. Except for the beginning
// exclamation mark, the whole bracket expression can be used
// directly as regex but we have to find where the expression
// ends.
// - "[][!]" matches ']', '[' and '!'.
// - "[]-]" matches ']' and '-'.
// - "[!]a-]" matches any character except ']', 'a' and '-'.
func translateBracketExpression(i *int, glob string) string {
regex := string(glob[*i])
*i++
j := *i
// Pass bracket expression negation.
if j < len(glob) && glob[j] == '!' {
j++
}
// Pass first closing bracket if it is at the beginning of the
// expression.
if j < len(glob) && glob[j] == ']' {
j++
}
// Find closing bracket. Stop once we reach the end or find it.
for j < len(glob) && glob[j] != ']' {
j++
}
if j < len(glob) {
if glob[*i] == '!' {
regex = regex + "^"
*i++
}
regex = regexp.QuoteMeta(glob[*i:j])
*i = j
} else {
// Failed to find closing bracket, treat opening bracket as a
// bracket literal instead of as an expression.
regex = regexp.QuoteMeta(string(glob[*i]))
}
return "[" + regex + "]"
}