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replace pkg/fileutils Matching funcs with github.com/moby/patternmatcher

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Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 3c69b9f2c5)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2022-09-30 21:53:24 +02:00
parent 14eb977c15
commit 44d42c2b16
No known key found for this signature in database
GPG key ID: 76698F39D527CE8C
11 changed files with 738 additions and 1013 deletions
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4
builder/remotecontext/detect.go
View file

@ -13,9 +13,9 @@ import (
"github.com/docker/docker/builder"
"github.com/docker/docker/builder/remotecontext/urlutil"
"github.com/docker/docker/errdefs"
"github.com/docker/docker/pkg/fileutils"
"github.com/moby/buildkit/frontend/dockerfile/dockerignore"
"github.com/moby/buildkit/frontend/dockerfile/parser"
"github.com/moby/patternmatcher"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
@ -130,7 +130,7 @@ func removeDockerfile(c modifiableContext, filesToRemove ...string) error {
f.Close()
filesToRemove = append([]string{".dockerignore"}, filesToRemove...)
for _, fileToRemove := range filesToRemove {
if rm, _ := fileutils.MatchesOrParentMatches(fileToRemove, excludes); rm {
if rm, _ := patternmatcher.MatchesOrParentMatches(fileToRemove, excludes); rm {
if err := c.Remove(fileToRemove); err != nil {
logrus.Errorf("failed to remove %s: %v", fileToRemove, err)
}

10
pkg/archive/archive.go
View file

@ -19,12 +19,12 @@ import (
"time"
"github.com/containerd/containerd/pkg/userns"
"github.com/docker/docker/pkg/fileutils"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/ioutils"
"github.com/docker/docker/pkg/pools"
"github.com/docker/docker/pkg/system"
"github.com/klauspost/compress/zstd"
"github.com/moby/patternmatcher"
"github.com/moby/sys/sequential"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
@ -854,7 +854,7 @@ func TarWithOptions(srcPath string, options *TarOptions) (io.ReadCloser, error)
// on platforms other than Windows.
srcPath = fixVolumePathPrefix(srcPath)
pm, err := fileutils.NewPatternMatcher(options.ExcludePatterns)
pm, err := patternmatcher.New(options.ExcludePatterns)
if err != nil {
return nil, err
}
@ -929,7 +929,7 @@ func TarWithOptions(srcPath string, options *TarOptions) (io.ReadCloser, error)
rebaseName := options.RebaseNames[include]
var (
parentMatchInfo []fileutils.MatchInfo
parentMatchInfo []patternmatcher.MatchInfo
parentDirs []string
)
@ -968,11 +968,11 @@ func TarWithOptions(srcPath string, options *TarOptions) (io.ReadCloser, error)
parentMatchInfo = parentMatchInfo[:len(parentMatchInfo)-1]
}
var matchInfo fileutils.MatchInfo
var matchInfo patternmatcher.MatchInfo
if len(parentMatchInfo) != 0 {
skip, matchInfo, err = pm.MatchesUsingParentResults(relFilePath, parentMatchInfo[len(parentMatchInfo)-1])
} else {
skip, matchInfo, err = pm.MatchesUsingParentResults(relFilePath, fileutils.MatchInfo{})
skip, matchInfo, err = pm.MatchesUsingParentResults(relFilePath, patternmatcher.MatchInfo{})
}
if err != nil {
logrus.Errorf("Error matching %s: %v", relFilePath, err)

44
pkg/fileutils/deprecated.go Normal file
View file

@ -0,0 +1,44 @@
package fileutils
import "github.com/moby/patternmatcher"
type (
// PatternMatcher allows checking paths against a list of patterns.
//
// Deprecated: use github.com/moby/patternmatcher.PatternMatcher
PatternMatcher = patternmatcher.PatternMatcher
// MatchInfo tracks information about parent dir matches while traversing a
// filesystem.
//
// Deprecated: use github.com/moby/patternmatcher.MatchInfo
MatchInfo = patternmatcher.MatchInfo
// Pattern defines a single regexp used to filter file paths.
//
// Deprecated: use github.com/moby/patternmatcher.Pattern
Pattern = patternmatcher.Pattern
)
var (
// NewPatternMatcher creates a new matcher object for specific patterns that can
// be used later to match against patterns against paths
//
// Deprecated: use github.com/moby/patternmatcher.New
NewPatternMatcher = patternmatcher.New
// Matches returns true if file matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// This implementation is buggy (it only checks a single parent dir against the
// pattern) and will be removed soon. Use MatchesOrParentMatches instead.
//
// Deprecated: use github.com/moby/patternmatcher.Matches
Matches = patternmatcher.Matches
// MatchesOrParentMatches returns true if file matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// Deprecated: use github.com/moby/patternmatcher.MatchesOrParentMatches
MatchesOrParentMatches = patternmatcher.MatchesOrParentMatches
)

468
pkg/fileutils/fileutils.go
View file

@ -1,480 +1,12 @@
package fileutils // import "github.com/docker/docker/pkg/fileutils"
import (
"errors"
"fmt"
"io"
"os"
"path/filepath"
"regexp"
"strings"
"text/scanner"
"unicode/utf8"
)
// escapeBytes is a bitmap used to check whether a character should be escaped when creating the regex.
var escapeBytes [8]byte
// shouldEscape reports whether a rune should be escaped as part of the regex.
//
// This only includes characters that require escaping in regex but are also NOT valid filepath pattern characters.
// Additionally, '\' is not excluded because there is specific logic to properly handle this, as it's a path separator
// on Windows.
//
// Adapted from regexp::QuoteMeta in go stdlib.
// See https://cs.opensource.google/go/go/+/refs/tags/go1.17.2:src/regexp/regexp.go;l=703-715;drc=refs%2Ftags%2Fgo1.17.2
func shouldEscape(b rune) bool {
return b < utf8.RuneSelf && escapeBytes[b%8]&(1<<(b/8)) != 0
}
func init() {
for _, b := range []byte(`.+()|{}$`) {
escapeBytes[b%8] |= 1 << (b / 8)
}
}
// PatternMatcher allows checking paths against a list of patterns
type PatternMatcher struct {
patterns []*Pattern
exclusions bool
}
// NewPatternMatcher creates a new matcher object for specific patterns that can
// be used later to match against patterns against paths
func NewPatternMatcher(patterns []string) (*PatternMatcher, error) {
pm := &PatternMatcher{
patterns: make([]*Pattern, 0, len(patterns)),
}
for _, p := range patterns {
// Eliminate leading and trailing whitespace.
p = strings.TrimSpace(p)
if p == "" {
continue
}
p = filepath.Clean(p)
newp := &Pattern{}
if p[0] == '!' {
if len(p) == 1 {
return nil, errors.New("illegal exclusion pattern: \"!\"")
}
newp.exclusion = true
p = p[1:]
pm.exclusions = true
}
// Do some syntax checking on the pattern.
// filepath's Match() has some really weird rules that are inconsistent
// so instead of trying to dup their logic, just call Match() for its
// error state and if there is an error in the pattern return it.
// If this becomes an issue we can remove this since its really only
// needed in the error (syntax) case - which isn't really critical.
if _, err := filepath.Match(p, "."); err != nil {
return nil, err
}
newp.cleanedPattern = p
newp.dirs = strings.Split(p, string(os.PathSeparator))
pm.patterns = append(pm.patterns, newp)
}
return pm, nil
}
// Matches returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// The "file" argument should be a slash-delimited path.
//
// Matches is not safe to call concurrently.
//
// Deprecated: This implementation is buggy (it only checks a single parent dir
// against the pattern) and will be removed soon. Use either
// MatchesOrParentMatches or MatchesUsingParentResults instead.
func (pm *PatternMatcher) Matches(file string) (bool, error) {
matched := false
file = filepath.FromSlash(file)
parentPath := filepath.Dir(file)
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
for _, pattern := range pm.patterns {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
match, err := pattern.match(file)
if err != nil {
return false, err
}
if !match && parentPath != "." {
// Check to see if the pattern matches one of our parent dirs.
if len(pattern.dirs) <= len(parentPathDirs) {
match, _ = pattern.match(strings.Join(parentPathDirs[:len(pattern.dirs)], string(os.PathSeparator)))
}
}
if match {
matched = !pattern.exclusion
}
}
return matched, nil
}
// MatchesOrParentMatches returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// The "file" argument should be a slash-delimited path.
//
// Matches is not safe to call concurrently.
func (pm *PatternMatcher) MatchesOrParentMatches(file string) (bool, error) {
matched := false
file = filepath.FromSlash(file)
parentPath := filepath.Dir(file)
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
for _, pattern := range pm.patterns {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
match, err := pattern.match(file)
if err != nil {
return false, err
}
if !match && parentPath != "." {
// Check to see if the pattern matches one of our parent dirs.
for i := range parentPathDirs {
match, _ = pattern.match(strings.Join(parentPathDirs[:i+1], string(os.PathSeparator)))
if match {
break
}
}
}
if match {
matched = !pattern.exclusion
}
}
return matched, nil
}
// MatchesUsingParentResult returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns. The functionality is
// the same as Matches, but as an optimization, the caller keeps track of
// whether the parent directory matched.
//
// The "file" argument should be a slash-delimited path.
//
// MatchesUsingParentResult is not safe to call concurrently.
//
// Deprecated: this function does behave correctly in some cases (see
// https://github.com/docker/buildx/issues/850).
//
// Use MatchesUsingParentResults instead.
func (pm *PatternMatcher) MatchesUsingParentResult(file string, parentMatched bool) (bool, error) {
matched := parentMatched
file = filepath.FromSlash(file)
for _, pattern := range pm.patterns {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
match, err := pattern.match(file)
if err != nil {
return false, err
}
if match {
matched = !pattern.exclusion
}
}
return matched, nil
}
// MatchInfo tracks information about parent dir matches while traversing a
// filesystem.
type MatchInfo struct {
parentMatched []bool
}
// MatchesUsingParentResults returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns. The functionality is
// the same as Matches, but as an optimization, the caller passes in
// intermediate results from matching the parent directory.
//
// The "file" argument should be a slash-delimited path.
//
// MatchesUsingParentResults is not safe to call concurrently.
func (pm *PatternMatcher) MatchesUsingParentResults(file string, parentMatchInfo MatchInfo) (bool, MatchInfo, error) {
parentMatched := parentMatchInfo.parentMatched
if len(parentMatched) != 0 && len(parentMatched) != len(pm.patterns) {
return false, MatchInfo{}, errors.New("wrong number of values in parentMatched")
}
file = filepath.FromSlash(file)
matched := false
matchInfo := MatchInfo{
parentMatched: make([]bool, len(pm.patterns)),
}
for i, pattern := range pm.patterns {
match := false
// If the parent matched this pattern, we don't need to recheck.
if len(parentMatched) != 0 {
match = parentMatched[i]
}
if !match {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
var err error
match, err = pattern.match(file)
if err != nil {
return false, matchInfo, err
}
// If the zero value of MatchInfo was passed in, we don't have
// any information about the parent dir's match results, and we
// apply the same logic as MatchesOrParentMatches.
if !match && len(parentMatched) == 0 {
if parentPath := filepath.Dir(file); parentPath != "." {
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
// Check to see if the pattern matches one of our parent dirs.
for i := range parentPathDirs {
match, _ = pattern.match(strings.Join(parentPathDirs[:i+1], string(os.PathSeparator)))
if match {
break
}
}
}
}
}
matchInfo.parentMatched[i] = match
if match {
matched = !pattern.exclusion
}
}
return matched, matchInfo, nil
}
// Exclusions returns true if any of the patterns define exclusions
func (pm *PatternMatcher) Exclusions() bool {
return pm.exclusions
}
// Patterns returns array of active patterns
func (pm *PatternMatcher) Patterns() []*Pattern {
return pm.patterns
}
// Pattern defines a single regexp used to filter file paths.
type Pattern struct {
matchType matchType
cleanedPattern string
dirs []string
regexp *regexp.Regexp
exclusion bool
}
type matchType int
const (
unknownMatch matchType = iota
exactMatch
prefixMatch
suffixMatch
regexpMatch
)
func (p *Pattern) String() string {
return p.cleanedPattern
}
// Exclusion returns true if this pattern defines exclusion
func (p *Pattern) Exclusion() bool {
return p.exclusion
}
func (p *Pattern) match(path string) (bool, error) {
if p.matchType == unknownMatch {
if err := p.compile(string(os.PathSeparator)); err != nil {
return false, filepath.ErrBadPattern
}
}
switch p.matchType {
case exactMatch:
return path == p.cleanedPattern, nil
case prefixMatch:
// strip trailing **
return strings.HasPrefix(path, p.cleanedPattern[:len(p.cleanedPattern)-2]), nil
case suffixMatch:
// strip leading **
suffix := p.cleanedPattern[2:]
if strings.HasSuffix(path, suffix) {
return true, nil
}
// **/foo matches "foo"
return suffix[0] == os.PathSeparator && path == suffix[1:], nil
case regexpMatch:
return p.regexp.MatchString(path), nil
}
return false, nil
}
func (p *Pattern) compile(sl string) error {
regStr := "^"
pattern := p.cleanedPattern
// Go through the pattern and convert it to a regexp.
// We use a scanner so we can support utf-8 chars.
var scan scanner.Scanner
scan.Init(strings.NewReader(pattern))
escSL := sl
if sl == `\` {
escSL += `\`
}
p.matchType = exactMatch
for i := 0; scan.Peek() != scanner.EOF; i++ {
ch := scan.Next()
if ch == '*' {
if scan.Peek() == '*' {
// is some flavor of "**"
scan.Next()
// Treat **/ as ** so eat the "/"
if string(scan.Peek()) == sl {
scan.Next()
}
if scan.Peek() == scanner.EOF {
// is "**EOF" - to align with .gitignore just accept all
if p.matchType == exactMatch {
p.matchType = prefixMatch
} else {
regStr += ".*"
p.matchType = regexpMatch
}
} else {
// is "**"
// Note that this allows for any # of /'s (even 0) because
// the .* will eat everything, even /'s
regStr += "(.*" + escSL + ")?"
p.matchType = regexpMatch
}
if i == 0 {
p.matchType = suffixMatch
}
} else {
// is "*" so map it to anything but "/"
regStr += "[^" + escSL + "]*"
p.matchType = regexpMatch
}
} else if ch == '?' {
// "?" is any char except "/"
regStr += "[^" + escSL + "]"
p.matchType = regexpMatch
} else if shouldEscape(ch) {
// Escape some regexp special chars that have no meaning
// in golang's filepath.Match
regStr += `\` + string(ch)
} else if ch == '\\' {
// escape next char. Note that a trailing \ in the pattern
// will be left alone (but need to escape it)
if sl == `\` {
// On windows map "\" to "\\", meaning an escaped backslash,
// and then just continue because filepath.Match on
// Windows doesn't allow escaping at all
regStr += escSL
continue
}
if scan.Peek() != scanner.EOF {
regStr += `\` + string(scan.Next())
p.matchType = regexpMatch
} else {
regStr += `\`
}
} else if ch == '[' || ch == ']' {
regStr += string(ch)
p.matchType = regexpMatch
} else {
regStr += string(ch)
}
}
if p.matchType != regexpMatch {
return nil
}
regStr += "$"
re, err := regexp.Compile(regStr)
if err != nil {
return err
}
p.regexp = re
p.matchType = regexpMatch
return nil
}
// Matches returns true if file matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// This implementation is buggy (it only checks a single parent dir against the
// pattern) and will be removed soon. Use MatchesOrParentMatches instead.
func Matches(file string, patterns []string) (bool, error) {
pm, err := NewPatternMatcher(patterns)
if err != nil {
return false, err
}
file = filepath.Clean(file)
if file == "." {
// Don't let them exclude everything, kind of silly.
return false, nil
}
return pm.Matches(file)
}
// MatchesOrParentMatches returns true if file matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
func MatchesOrParentMatches(file string, patterns []string) (bool, error) {
pm, err := NewPatternMatcher(patterns)
if err != nil {
return false, err
}
file = filepath.Clean(file)
if file == "." {
// Don't let them exclude everything, kind of silly.
return false, nil
}
return pm.MatchesOrParentMatches(file)
}
// CopyFile copies from src to dst until either EOF is reached
// on src or an error occurs. It verifies src exists and removes
// the dst if it exists.

538
pkg/fileutils/fileutils_test.go
View file

@ -1,12 +1,10 @@
package fileutils // import "github.com/docker/docker/pkg/fileutils"
import (
"fmt"
"os"
"path"
"path/filepath"
"runtime"
"strings"
"testing"
)
@ -187,376 +185,6 @@ func TestReadSymlinkedDirectoryToFile(t *testing.T) {
}
}
func TestWildcardMatches(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"*"})
if !match {
t.Errorf("failed to get a wildcard match, got %v", match)
}
}
// A simple pattern match should return true.
func TestPatternMatches(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"*.go"})
if !match {
t.Errorf("failed to get a match, got %v", match)
}
}
// An exclusion followed by an inclusion should return true.
func TestExclusionPatternMatchesPatternBefore(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"!fileutils.go", "*.go"})
if !match {
t.Errorf("failed to get true match on exclusion pattern, got %v", match)
}
}
// A folder pattern followed by an exception should return false.
func TestPatternMatchesFolderExclusions(t *testing.T) {
match, _ := Matches("docs/README.md", []string{"docs", "!docs/README.md"})
if match {
t.Errorf("failed to get a false match on exclusion pattern, got %v", match)
}
}
// A folder pattern followed by an exception should return false.
func TestPatternMatchesFolderWithSlashExclusions(t *testing.T) {
match, _ := Matches("docs/README.md", []string{"docs/", "!docs/README.md"})
if match {
t.Errorf("failed to get a false match on exclusion pattern, got %v", match)
}
}
// A folder pattern followed by an exception should return false.
func TestPatternMatchesFolderWildcardExclusions(t *testing.T) {
match, _ := Matches("docs/README.md", []string{"docs/*", "!docs/README.md"})
if match {
t.Errorf("failed to get a false match on exclusion pattern, got %v", match)
}
}
// A pattern followed by an exclusion should return false.
func TestExclusionPatternMatchesPatternAfter(t *testing.T) {
match, _ := Matches("fileutils.go", []string{"*.go", "!fileutils.go"})
if match {
t.Errorf("failed to get false match on exclusion pattern, got %v", match)
}
}
// A filename evaluating to . should return false.
func TestExclusionPatternMatchesWholeDirectory(t *testing.T) {
match, _ := Matches(".", []string{"*.go"})
if match {
t.Errorf("failed to get false match on ., got %v", match)
}
}
// A single ! pattern should return an error.
func TestSingleExclamationError(t *testing.T) {
_, err := Matches("fileutils.go", []string{"!"})
if err == nil {
t.Errorf("failed to get an error for a single exclamation point, got %v", err)
}
}
// Matches with no patterns
func TestMatchesWithNoPatterns(t *testing.T) {
matches, err := Matches("/any/path/there", []string{})
if err != nil {
t.Fatal(err)
}
if matches {
t.Fatalf("Should not have match anything")
}
}
// Matches with malformed patterns
func TestMatchesWithMalformedPatterns(t *testing.T) {
matches, err := Matches("/any/path/there", []string{"["})
if err == nil {
t.Fatal("Should have failed because of a malformed syntax in the pattern")
}
if matches {
t.Fatalf("Should not have match anything")
}
}
type matchesTestCase struct {
pattern string
text string
pass bool
}
type multiPatternTestCase struct {
patterns []string
text string
pass bool
}
func TestMatches(t *testing.T) {
tests := []matchesTestCase{
{"**", "file", true},
{"**", "file/", true},
{"**/", "file", true}, // weird one
{"**/", "file/", true},
{"**", "/", true},
{"**/", "/", true},
{"**", "dir/file", true},
{"**/", "dir/file", true},
{"**", "dir/file/", true},
{"**/", "dir/file/", true},
{"**/**", "dir/file", true},
{"**/**", "dir/file/", true},
{"dir/**", "dir/file", true},
{"dir/**", "dir/file/", true},
{"dir/**", "dir/dir2/file", true},
{"dir/**", "dir/dir2/file/", true},
{"**/dir", "dir", true},
{"**/dir", "dir/file", true},
{"**/dir2/*", "dir/dir2/file", true},
{"**/dir2/*", "dir/dir2/file/", true},
{"**/dir2/**", "dir/dir2/dir3/file", true},
{"**/dir2/**", "dir/dir2/dir3/file/", true},
{"**file", "file", true},
{"**file", "dir/file", true},
{"**/file", "dir/file", true},
{"**file", "dir/dir/file", true},
{"**/file", "dir/dir/file", true},
{"**/file*", "dir/dir/file", true},
{"**/file*", "dir/dir/file.txt", true},
{"**/file*txt", "dir/dir/file.txt", true},
{"**/file*.txt", "dir/dir/file.txt", true},
{"**/file*.txt*", "dir/dir/file.txt", true},
{"**/**/*.txt", "dir/dir/file.txt", true},
{"**/**/*.txt2", "dir/dir/file.txt", false},
{"**/*.txt", "file.txt", true},
{"**/**/*.txt", "file.txt", true},
{"a**/*.txt", "a/file.txt", true},
{"a**/*.txt", "a/dir/file.txt", true},
{"a**/*.txt", "a/dir/dir/file.txt", true},
{"a/*.txt", "a/dir/file.txt", false},
{"a/*.txt", "a/file.txt", true},
{"a/*.txt**", "a/file.txt", true},
{"a[b-d]e", "ae", false},
{"a[b-d]e", "ace", true},
{"a[b-d]e", "aae", false},
{"a[^b-d]e", "aze", true},
{".*", ".foo", true},
{".*", "foo", false},
{"abc.def", "abcdef", false},
{"abc.def", "abc.def", true},
{"abc.def", "abcZdef", false},
{"abc?def", "abcZdef", true},
{"abc?def", "abcdef", false},
{"a\\\\", "a\\", true},
{"**/foo/bar", "foo/bar", true},
{"**/foo/bar", "dir/foo/bar", true},
{"**/foo/bar", "dir/dir2/foo/bar", true},
{"abc/**", "abc", false},
{"abc/**", "abc/def", true},
{"abc/**", "abc/def/ghi", true},
{"**/.foo", ".foo", true},
{"**/.foo", "bar.foo", false},
{"a(b)c/def", "a(b)c/def", true},
{"a(b)c/def", "a(b)c/xyz", false},
{"a.|)$(}+{bc", "a.|)$(}+{bc", true},
{"dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", true},
{"dist/*.whl", "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", true},
}
multiPatternTests := []multiPatternTestCase{
{[]string{"**", "!util/docker/web"}, "util/docker/web/foo", false},
{[]string{"**", "!util/docker/web", "util/docker/web/foo"}, "util/docker/web/foo", true},
{[]string{"**", "!dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl"}, "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", false},
{[]string{"**", "!dist/*.whl"}, "dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", false},
}
if runtime.GOOS != "windows" {
tests = append(tests, []matchesTestCase{
{"a\\*b", "a*b", true},
}...)
}
t.Run("MatchesOrParentMatches", func(t *testing.T) {
for _, test := range tests {
pm, err := NewPatternMatcher([]string{test.pattern})
if err != nil {
t.Fatalf("%v (pattern=%q, text=%q)", err, test.pattern, test.text)
}
res, _ := pm.MatchesOrParentMatches(test.text)
if test.pass != res {
t.Fatalf("%v (pattern=%q, text=%q)", err, test.pattern, test.text)
}
}
for _, test := range multiPatternTests {
pm, err := NewPatternMatcher(test.patterns)
if err != nil {
t.Fatalf("%v (patterns=%q, text=%q)", err, test.patterns, test.text)
}
res, _ := pm.MatchesOrParentMatches(test.text)
if test.pass != res {
t.Errorf("expected: %v, got: %v (patterns=%q, text=%q)", test.pass, res, test.patterns, test.text)
}
}
})
t.Run("MatchesUsingParentResult", func(t *testing.T) {
for _, test := range tests {
pm, err := NewPatternMatcher([]string{test.pattern})
if err != nil {
t.Fatalf("%v (pattern=%q, text=%q)", err, test.pattern, test.text)
}
parentPath := filepath.Dir(filepath.FromSlash(test.text))
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
parentMatched := false
if parentPath != "." {
for i := range parentPathDirs {
parentMatched, _ = pm.MatchesUsingParentResult(strings.Join(parentPathDirs[:i+1], "/"), parentMatched)
}
}
res, _ := pm.MatchesUsingParentResult(test.text, parentMatched)
if test.pass != res {
t.Errorf("expected: %v, got: %v (pattern=%q, text=%q)", test.pass, res, test.pattern, test.text)
}
}
})
t.Run("MatchesUsingParentResults", func(t *testing.T) {
check := func(pm *PatternMatcher, text string, pass bool, desc string) {
parentPath := filepath.Dir(filepath.FromSlash(text))
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
parentMatchInfo := MatchInfo{}
if parentPath != "." {
for i := range parentPathDirs {
_, parentMatchInfo, _ = pm.MatchesUsingParentResults(strings.Join(parentPathDirs[:i+1], "/"), parentMatchInfo)
}
}
res, _, _ := pm.MatchesUsingParentResults(text, parentMatchInfo)
if pass != res {
t.Errorf("expected: %v, got: %v %s", pass, res, desc)
}
}
for _, test := range tests {
desc := fmt.Sprintf("(pattern=%q text=%q)", test.pattern, test.text)
pm, err := NewPatternMatcher([]string{test.pattern})
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
for _, test := range multiPatternTests {
desc := fmt.Sprintf("pattern=%q text=%q", test.patterns, test.text)
pm, err := NewPatternMatcher(test.patterns)
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
})
t.Run("MatchesUsingParentResultsNoContext", func(t *testing.T) {
check := func(pm *PatternMatcher, text string, pass bool, desc string) {
res, _, _ := pm.MatchesUsingParentResults(text, MatchInfo{})
if pass != res {
t.Errorf("expected: %v, got: %v %s", pass, res, desc)
}
}
for _, test := range tests {
desc := fmt.Sprintf("(pattern=%q text=%q)", test.pattern, test.text)
pm, err := NewPatternMatcher([]string{test.pattern})
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
for _, test := range multiPatternTests {
desc := fmt.Sprintf("(pattern=%q text=%q)", test.patterns, test.text)
pm, err := NewPatternMatcher(test.patterns)
if err != nil {
t.Fatal(err, desc)
}
check(pm, test.text, test.pass, desc)
}
})
}
func TestCleanPatterns(t *testing.T) {
patterns := []string{"docs", "config"}
pm, err := NewPatternMatcher(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
cleaned := pm.Patterns()
if len(cleaned) != 2 {
t.Errorf("expected 2 element slice, got %v", len(cleaned))
}
}
func TestCleanPatternsStripEmptyPatterns(t *testing.T) {
patterns := []string{"docs", "config", ""}
pm, err := NewPatternMatcher(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
cleaned := pm.Patterns()
if len(cleaned) != 2 {
t.Errorf("expected 2 element slice, got %v", len(cleaned))
}
}
func TestCleanPatternsExceptionFlag(t *testing.T) {
patterns := []string{"docs", "!docs/README.md"}
pm, err := NewPatternMatcher(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
if !pm.Exclusions() {
t.Errorf("expected exceptions to be true, got %v", pm.Exclusions())
}
}
func TestCleanPatternsLeadingSpaceTrimmed(t *testing.T) {
patterns := []string{"docs", " !docs/README.md"}
pm, err := NewPatternMatcher(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
if !pm.Exclusions() {
t.Errorf("expected exceptions to be true, got %v", pm.Exclusions())
}
}
func TestCleanPatternsTrailingSpaceTrimmed(t *testing.T) {
patterns := []string{"docs", "!docs/README.md "}
pm, err := NewPatternMatcher(patterns)
if err != nil {
t.Fatalf("invalid pattern %v", patterns)
}
if !pm.Exclusions() {
t.Errorf("expected exceptions to be true, got %v", pm.Exclusions())
}
}
func TestCleanPatternsErrorSingleException(t *testing.T) {
patterns := []string{"!"}
_, err := NewPatternMatcher(patterns)
if err == nil {
t.Errorf("expected error on single exclamation point, got %v", err)
}
}
func TestCreateIfNotExistsDir(t *testing.T) {
folderToCreate := filepath.Join(t.TempDir(), "tocreate")
@ -588,169 +216,3 @@ func TestCreateIfNotExistsFile(t *testing.T) {
t.Fatalf("Should have been a file, seems it's not")
}
}
// These matchTests are stolen from go's filepath Match tests.
type matchTest struct {
pattern, s string
match bool
err error
}
var matchTests = []matchTest{
{"abc", "abc", true, nil},
{"*", "abc", true, nil},
{"*c", "abc", true, nil},
{"a*", "a", true, nil},
{"a*", "abc", true, nil},
{"a*", "ab/c", true, nil},
{"a*/b", "abc/b", true, nil},
{"a*/b", "a/c/b", false, nil},
{"a*b*c*d*e*/f", "axbxcxdxe/f", true, nil},
{"a*b*c*d*e*/f", "axbxcxdxexxx/f", true, nil},
{"a*b*c*d*e*/f", "axbxcxdxe/xxx/f", false, nil},
{"a*b*c*d*e*/f", "axbxcxdxexxx/fff", false, nil},
{"a*b?c*x", "abxbbxdbxebxczzx", true, nil},
{"a*b?c*x", "abxbbxdbxebxczzy", false, nil},
{"ab[c]", "abc", true, nil},
{"ab[b-d]", "abc", true, nil},
{"ab[e-g]", "abc", false, nil},
{"ab[^c]", "abc", false, nil},
{"ab[^b-d]", "abc", false, nil},
{"ab[^e-g]", "abc", true, nil},
{"a\\*b", "a*b", true, nil},
{"a\\*b", "ab", false, nil},
{"a?b", "a☺b", true, nil},
{"a[^a]b", "a☺b", true, nil},
{"a???b", "a☺b", false, nil},
{"a[^a][^a][^a]b", "a☺b", false, nil},
{"[a-ζ]*", "α", true, nil},
{"*[a-ζ]", "A", false, nil},
{"a?b", "a/b", false, nil},
{"a*b", "a/b", false, nil},
{"[\\]a]", "]", true, nil},
{"[\\-]", "-", true, nil},
{"[x\\-]", "x", true, nil},
{"[x\\-]", "-", true, nil},
{"[x\\-]", "z", false, nil},
{"[\\-x]", "x", true, nil},
{"[\\-x]", "-", true, nil},
{"[\\-x]", "a", false, nil},
{"[]a]", "]", false, filepath.ErrBadPattern},
{"[-]", "-", false, filepath.ErrBadPattern},
{"[x-]", "x", false, filepath.ErrBadPattern},
{"[x-]", "-", false, filepath.ErrBadPattern},
{"[x-]", "z", false, filepath.ErrBadPattern},
{"[-x]", "x", false, filepath.ErrBadPattern},
{"[-x]", "-", false, filepath.ErrBadPattern},
{"[-x]", "a", false, filepath.ErrBadPattern},
{"\\", "a", false, filepath.ErrBadPattern},
{"[a-b-c]", "a", false, filepath.ErrBadPattern},
{"[", "a", false, filepath.ErrBadPattern},
{"[^", "a", false, filepath.ErrBadPattern},
{"[^bc", "a", false, filepath.ErrBadPattern},
{"a[", "a", false, filepath.ErrBadPattern}, // was nil but IMO its wrong
{"a[", "ab", false, filepath.ErrBadPattern},
{"*x", "xxx", true, nil},
}
func errp(e error) string {
if e == nil {
return "<nil>"
}
return e.Error()
}
// TestMatch tests our version of filepath.Match, called Matches.
func TestMatch(t *testing.T) {
for _, tt := range matchTests {
pattern := tt.pattern
s := tt.s
if runtime.GOOS == "windows" {
if strings.Contains(pattern, "\\") {
// no escape allowed on windows.
continue
}
pattern = filepath.Clean(pattern)
s = filepath.Clean(s)
}
ok, err := Matches(s, []string{pattern})
if ok != tt.match || err != tt.err {
t.Fatalf("Match(%#q, %#q) = %v, %q want %v, %q", pattern, s, ok, errp(err), tt.match, errp(tt.err))
}
}
}
type compileTestCase struct {
pattern string
matchType matchType
compiledRegexp string
windowsCompiledRegexp string
}
var compileTests = []compileTestCase{
{"*", regexpMatch, `^[^/]*$`, `^[^\\]*$`},
{"file*", regexpMatch, `^file[^/]*$`, `^file[^\\]*$`},
{"*file", regexpMatch, `^[^/]*file$`, `^[^\\]*file$`},
{"a*/b", regexpMatch, `^a[^/]*/b$`, `^a[^\\]*\\b$`},
{"**", suffixMatch, "", ""},
{"**/**", regexpMatch, `^(.*/)?.*$`, `^(.*\\)?.*$`},
{"dir/**", prefixMatch, "", ""},
{"**/dir", suffixMatch, "", ""},
{"**/dir2/*", regexpMatch, `^(.*/)?dir2/[^/]*$`, `^(.*\\)?dir2\\[^\\]*$`},
{"**/dir2/**", regexpMatch, `^(.*/)?dir2/.*$`, `^(.*\\)?dir2\\.*$`},
{"**file", suffixMatch, "", ""},
{"**/file*txt", regexpMatch, `^(.*/)?file[^/]*txt$`, `^(.*\\)?file[^\\]*txt$`},
{"**/**/*.txt", regexpMatch, `^(.*/)?(.*/)?[^/]*\.txt$`, `^(.*\\)?(.*\\)?[^\\]*\.txt$`},
{"a[b-d]e", regexpMatch, `^a[b-d]e$`, `^a[b-d]e$`},
{".*", regexpMatch, `^\.[^/]*$`, `^\.[^\\]*$`},
{"abc.def", exactMatch, "", ""},
{"abc?def", regexpMatch, `^abc[^/]def$`, `^abc[^\\]def$`},
{"**/foo/bar", suffixMatch, "", ""},
{"a(b)c/def", exactMatch, "", ""},
{"a.|)$(}+{bc", exactMatch, "", ""},
{"dist/proxy.py-2.4.0rc3.dev36+g08acad9-py3-none-any.whl", exactMatch, "", ""},
}
// TestCompile confirms that "compile" assigns the correct match type to a
// variety of test case patterns. If the match type is regexp, it also confirms
// that the compiled regexp matches the expected regexp.
func TestCompile(t *testing.T) {
t.Run("slash", testCompile("/"))
t.Run("backslash", testCompile(`\`))
}
func testCompile(sl string) func(*testing.T) {
return func(t *testing.T) {
for _, tt := range compileTests {
// Avoid NewPatternMatcher, which has platform-specific behavior
pm := &PatternMatcher{
patterns: make([]*Pattern, 1),
}
pattern := path.Clean(tt.pattern)
if sl != "/" {
pattern = strings.ReplaceAll(pattern, "/", sl)
}
newp := &Pattern{}
newp.cleanedPattern = pattern
newp.dirs = strings.Split(pattern, sl)
pm.patterns[0] = newp
if err := pm.patterns[0].compile(sl); err != nil {
t.Fatalf("Failed to compile pattern %q: %v", pattern, err)
}
if pm.patterns[0].matchType != tt.matchType {
t.Errorf("pattern %q: matchType = %v, want %v", pattern, pm.patterns[0].matchType, tt.matchType)
continue
}
if tt.matchType == regexpMatch {
if sl == `\` {
if pm.patterns[0].regexp.String() != tt.windowsCompiledRegexp {
t.Errorf("pattern %q: regexp = %s, want %s", pattern, pm.patterns[0].regexp, tt.windowsCompiledRegexp)
}
} else if pm.patterns[0].regexp.String() != tt.compiledRegexp {
t.Errorf("pattern %q: regexp = %s, want %s", pattern, pm.patterns[0].regexp, tt.compiledRegexp)
}
}
}
}
}

1
vendor.mod
View file

@ -52,6 +52,7 @@ require (
github.com/moby/buildkit v0.10.4
github.com/moby/ipvs v1.0.2
github.com/moby/locker v1.0.1
github.com/moby/patternmatcher v0.5.0
github.com/moby/pubsub v1.0.0
github.com/moby/swarmkit/v2 v2.0.0-20220721174824-48dd89375d0a
github.com/moby/sys/mount v0.3.3

2
vendor.sum
View file

@ -770,6 +770,8 @@ github.com/moby/ipvs v1.0.2 h1:NSbzuRTvfneftLU3VwPU5QuA6NZ0IUmqq9+VHcQxqHw=
github.com/moby/ipvs v1.0.2/go.mod h1:2pngiyseZbIKXNv7hsKj3O9UEz30c53MT9005gt2hxQ=
github.com/moby/locker v1.0.1 h1:fOXqR41zeveg4fFODix+1Ch4mj/gT0NE1XJbp/epuBg=
github.com/moby/locker v1.0.1/go.mod h1:S7SDdo5zpBK84bzzVlKr2V0hz+7x9hWbYC/kq7oQppc=
github.com/moby/patternmatcher v0.5.0 h1:YCZgJOeULcxLw1Q+sVR636pmS7sPEn1Qo2iAN6M7DBo=
github.com/moby/patternmatcher v0.5.0/go.mod h1:hDPoyOpDY7OrrMDLaYoY3hf52gNCR/YOUYxkhApJIxc=
github.com/moby/pubsub v1.0.0 h1:jkp/imWsmJz2f6LyFsk7EkVeN2HxR/HTTOY8kHrsxfA=
github.com/moby/pubsub v1.0.0/go.mod h1:bXSO+3h5MNXXCaEG+6/NlAIk7MMZbySZlnB+cUQhKKc=
github.com/moby/spdystream v0.2.0/go.mod h1:f7i0iNDQJ059oMTcWxx8MA/zKFIuD/lY+0GqbN2Wy8c=

191
vendor/github.com/moby/patternmatcher/LICENSE generated vendored Normal file
View file

@ -0,0 +1,191 @@
Apache License
Version 2.0, January 2004
https://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
Copyright 2013-2018 Docker, Inc.
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
https://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.

16
vendor/github.com/moby/patternmatcher/NOTICE generated vendored Normal file
View file

@ -0,0 +1,16 @@
Docker
Copyright 2012-2017 Docker, Inc.
This product includes software developed at Docker, Inc. (https://www.docker.com).
The following is courtesy of our legal counsel:
Use and transfer of Docker may be subject to certain restrictions by the
United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not
violate applicable laws.
For more information, please see https://www.bis.doc.gov
See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

474
vendor/github.com/moby/patternmatcher/patternmatcher.go generated vendored Normal file
View file

@ -0,0 +1,474 @@
package patternmatcher
import (
"errors"
"os"
"path/filepath"
"regexp"
"strings"
"text/scanner"
"unicode/utf8"
)
// escapeBytes is a bitmap used to check whether a character should be escaped when creating the regex.
var escapeBytes [8]byte
// shouldEscape reports whether a rune should be escaped as part of the regex.
//
// This only includes characters that require escaping in regex but are also NOT valid filepath pattern characters.
// Additionally, '\' is not excluded because there is specific logic to properly handle this, as it's a path separator
// on Windows.
//
// Adapted from regexp::QuoteMeta in go stdlib.
// See https://cs.opensource.google/go/go/+/refs/tags/go1.17.2:src/regexp/regexp.go;l=703-715;drc=refs%2Ftags%2Fgo1.17.2
func shouldEscape(b rune) bool {
return b < utf8.RuneSelf && escapeBytes[b%8]&(1<<(b/8)) != 0
}
func init() {
for _, b := range []byte(`.+()|{}$`) {
escapeBytes[b%8] |= 1 << (b / 8)
}
}
// PatternMatcher allows checking paths against a list of patterns
type PatternMatcher struct {
patterns []*Pattern
exclusions bool
}
// New creates a new matcher object for specific patterns that can
// be used later to match against patterns against paths
func New(patterns []string) (*PatternMatcher, error) {
pm := &PatternMatcher{
patterns: make([]*Pattern, 0, len(patterns)),
}
for _, p := range patterns {
// Eliminate leading and trailing whitespace.
p = strings.TrimSpace(p)
if p == "" {
continue
}
p = filepath.Clean(p)
newp := &Pattern{}
if p[0] == '!' {
if len(p) == 1 {
return nil, errors.New("illegal exclusion pattern: \"!\"")
}
newp.exclusion = true
p = p[1:]
pm.exclusions = true
}
// Do some syntax checking on the pattern.
// filepath's Match() has some really weird rules that are inconsistent
// so instead of trying to dup their logic, just call Match() for its
// error state and if there is an error in the pattern return it.
// If this becomes an issue we can remove this since its really only
// needed in the error (syntax) case - which isn't really critical.
if _, err := filepath.Match(p, "."); err != nil {
return nil, err
}
newp.cleanedPattern = p
newp.dirs = strings.Split(p, string(os.PathSeparator))
pm.patterns = append(pm.patterns, newp)
}
return pm, nil
}
// Matches returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// The "file" argument should be a slash-delimited path.
//
// Matches is not safe to call concurrently.
//
// Deprecated: This implementation is buggy (it only checks a single parent dir
// against the pattern) and will be removed soon. Use either
// MatchesOrParentMatches or MatchesUsingParentResults instead.
func (pm *PatternMatcher) Matches(file string) (bool, error) {
matched := false
file = filepath.FromSlash(file)
parentPath := filepath.Dir(file)
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
for _, pattern := range pm.patterns {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
match, err := pattern.match(file)
if err != nil {
return false, err
}
if !match && parentPath != "." {
// Check to see if the pattern matches one of our parent dirs.
if len(pattern.dirs) <= len(parentPathDirs) {
match, _ = pattern.match(strings.Join(parentPathDirs[:len(pattern.dirs)], string(os.PathSeparator)))
}
}
if match {
matched = !pattern.exclusion
}
}
return matched, nil
}
// MatchesOrParentMatches returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// The "file" argument should be a slash-delimited path.
//
// Matches is not safe to call concurrently.
func (pm *PatternMatcher) MatchesOrParentMatches(file string) (bool, error) {
matched := false
file = filepath.FromSlash(file)
parentPath := filepath.Dir(file)
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
for _, pattern := range pm.patterns {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
match, err := pattern.match(file)
if err != nil {
return false, err
}
if !match && parentPath != "." {
// Check to see if the pattern matches one of our parent dirs.
for i := range parentPathDirs {
match, _ = pattern.match(strings.Join(parentPathDirs[:i+1], string(os.PathSeparator)))
if match {
break
}
}
}
if match {
matched = !pattern.exclusion
}
}
return matched, nil
}
// MatchesUsingParentResult returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns. The functionality is
// the same as Matches, but as an optimization, the caller keeps track of
// whether the parent directory matched.
//
// The "file" argument should be a slash-delimited path.
//
// MatchesUsingParentResult is not safe to call concurrently.
//
// Deprecated: this function does behave correctly in some cases (see
// https://github.com/docker/buildx/issues/850).
//
// Use MatchesUsingParentResults instead.
func (pm *PatternMatcher) MatchesUsingParentResult(file string, parentMatched bool) (bool, error) {
matched := parentMatched
file = filepath.FromSlash(file)
for _, pattern := range pm.patterns {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
match, err := pattern.match(file)
if err != nil {
return false, err
}
if match {
matched = !pattern.exclusion
}
}
return matched, nil
}
// MatchInfo tracks information about parent dir matches while traversing a
// filesystem.
type MatchInfo struct {
parentMatched []bool
}
// MatchesUsingParentResults returns true if "file" matches any of the patterns
// and isn't excluded by any of the subsequent patterns. The functionality is
// the same as Matches, but as an optimization, the caller passes in
// intermediate results from matching the parent directory.
//
// The "file" argument should be a slash-delimited path.
//
// MatchesUsingParentResults is not safe to call concurrently.
func (pm *PatternMatcher) MatchesUsingParentResults(file string, parentMatchInfo MatchInfo) (bool, MatchInfo, error) {
parentMatched := parentMatchInfo.parentMatched
if len(parentMatched) != 0 && len(parentMatched) != len(pm.patterns) {
return false, MatchInfo{}, errors.New("wrong number of values in parentMatched")
}
file = filepath.FromSlash(file)
matched := false
matchInfo := MatchInfo{
parentMatched: make([]bool, len(pm.patterns)),
}
for i, pattern := range pm.patterns {
match := false
// If the parent matched this pattern, we don't need to recheck.
if len(parentMatched) != 0 {
match = parentMatched[i]
}
if !match {
// Skip evaluation if this is an inclusion and the filename
// already matched the pattern, or it's an exclusion and it has
// not matched the pattern yet.
if pattern.exclusion != matched {
continue
}
var err error
match, err = pattern.match(file)
if err != nil {
return false, matchInfo, err
}
// If the zero value of MatchInfo was passed in, we don't have
// any information about the parent dir's match results, and we
// apply the same logic as MatchesOrParentMatches.
if !match && len(parentMatched) == 0 {
if parentPath := filepath.Dir(file); parentPath != "." {
parentPathDirs := strings.Split(parentPath, string(os.PathSeparator))
// Check to see if the pattern matches one of our parent dirs.
for i := range parentPathDirs {
match, _ = pattern.match(strings.Join(parentPathDirs[:i+1], string(os.PathSeparator)))
if match {
break
}
}
}
}
}
matchInfo.parentMatched[i] = match
if match {
matched = !pattern.exclusion
}
}
return matched, matchInfo, nil
}
// Exclusions returns true if any of the patterns define exclusions
func (pm *PatternMatcher) Exclusions() bool {
return pm.exclusions
}
// Patterns returns array of active patterns
func (pm *PatternMatcher) Patterns() []*Pattern {
return pm.patterns
}
// Pattern defines a single regexp used to filter file paths.
type Pattern struct {
matchType matchType
cleanedPattern string
dirs []string
regexp *regexp.Regexp
exclusion bool
}
type matchType int
const (
unknownMatch matchType = iota
exactMatch
prefixMatch
suffixMatch
regexpMatch
)
func (p *Pattern) String() string {
return p.cleanedPattern
}
// Exclusion returns true if this pattern defines exclusion
func (p *Pattern) Exclusion() bool {
return p.exclusion
}
func (p *Pattern) match(path string) (bool, error) {
if p.matchType == unknownMatch {
if err := p.compile(string(os.PathSeparator)); err != nil {
return false, filepath.ErrBadPattern
}
}
switch p.matchType {
case exactMatch:
return path == p.cleanedPattern, nil
case prefixMatch:
// strip trailing **
return strings.HasPrefix(path, p.cleanedPattern[:len(p.cleanedPattern)-2]), nil
case suffixMatch:
// strip leading **
suffix := p.cleanedPattern[2:]
if strings.HasSuffix(path, suffix) {
return true, nil
}
// **/foo matches "foo"
return suffix[0] == os.PathSeparator && path == suffix[1:], nil
case regexpMatch:
return p.regexp.MatchString(path), nil
}
return false, nil
}
func (p *Pattern) compile(sl string) error {
regStr := "^"
pattern := p.cleanedPattern
// Go through the pattern and convert it to a regexp.
// We use a scanner so we can support utf-8 chars.
var scan scanner.Scanner
scan.Init(strings.NewReader(pattern))
escSL := sl
if sl == `\` {
escSL += `\`
}
p.matchType = exactMatch
for i := 0; scan.Peek() != scanner.EOF; i++ {
ch := scan.Next()
if ch == '*' {
if scan.Peek() == '*' {
// is some flavor of "**"
scan.Next()
// Treat **/ as ** so eat the "/"
if string(scan.Peek()) == sl {
scan.Next()
}
if scan.Peek() == scanner.EOF {
// is "**EOF" - to align with .gitignore just accept all
if p.matchType == exactMatch {
p.matchType = prefixMatch
} else {
regStr += ".*"
p.matchType = regexpMatch
}
} else {
// is "**"
// Note that this allows for any # of /'s (even 0) because
// the .* will eat everything, even /'s
regStr += "(.*" + escSL + ")?"
p.matchType = regexpMatch
}
if i == 0 {
p.matchType = suffixMatch
}
} else {
// is "*" so map it to anything but "/"
regStr += "[^" + escSL + "]*"
p.matchType = regexpMatch
}
} else if ch == '?' {
// "?" is any char except "/"
regStr += "[^" + escSL + "]"
p.matchType = regexpMatch
} else if shouldEscape(ch) {
// Escape some regexp special chars that have no meaning
// in golang's filepath.Match
regStr += `\` + string(ch)
} else if ch == '\\' {
// escape next char. Note that a trailing \ in the pattern
// will be left alone (but need to escape it)
if sl == `\` {
// On windows map "\" to "\\", meaning an escaped backslash,
// and then just continue because filepath.Match on
// Windows doesn't allow escaping at all
regStr += escSL
continue
}
if scan.Peek() != scanner.EOF {
regStr += `\` + string(scan.Next())
p.matchType = regexpMatch
} else {
regStr += `\`
}
} else if ch == '[' || ch == ']' {
regStr += string(ch)
p.matchType = regexpMatch
} else {
regStr += string(ch)
}
}
if p.matchType != regexpMatch {
return nil
}
regStr += "$"
re, err := regexp.Compile(regStr)
if err != nil {
return err
}
p.regexp = re
p.matchType = regexpMatch
return nil
}
// Matches returns true if file matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
//
// This implementation is buggy (it only checks a single parent dir against the
// pattern) and will be removed soon. Use MatchesOrParentMatches instead.
func Matches(file string, patterns []string) (bool, error) {
pm, err := New(patterns)
if err != nil {
return false, err
}
file = filepath.Clean(file)
if file == "." {
// Don't let them exclude everything, kind of silly.
return false, nil
}
return pm.Matches(file)
}
// MatchesOrParentMatches returns true if file matches any of the patterns
// and isn't excluded by any of the subsequent patterns.
func MatchesOrParentMatches(file string, patterns []string) (bool, error) {
pm, err := New(patterns)
if err != nil {
return false, err
}
file = filepath.Clean(file)
if file == "." {
// Don't let them exclude everything, kind of silly.
return false, nil
}
return pm.MatchesOrParentMatches(file)
}

3
vendor/modules.txt vendored
View file

@ -594,6 +594,9 @@ github.com/moby/ipvs
# github.com/moby/locker v1.0.1
## explicit; go 1.13
github.com/moby/locker
# github.com/moby/patternmatcher v0.5.0
## explicit; go 1.19
github.com/moby/patternmatcher
# github.com/moby/pubsub v1.0.0
## explicit; go 1.19
github.com/moby/pubsub