diff options
Diffstat (limited to 'vendor/github.com/moby/patternmatcher')
| -rw-r--r-- | vendor/github.com/moby/patternmatcher/LICENSE | 191 | ||||
| -rw-r--r-- | vendor/github.com/moby/patternmatcher/NOTICE | 16 | ||||
| -rw-r--r-- | vendor/github.com/moby/patternmatcher/ignorefile/ignorefile.go | 73 | ||||
| -rw-r--r-- | vendor/github.com/moby/patternmatcher/patternmatcher.go | 474 |
4 files changed, 754 insertions, 0 deletions
diff --git a/vendor/github.com/moby/patternmatcher/LICENSE b/vendor/github.com/moby/patternmatcher/LICENSE new file mode 100644 index 0000000..6d8d58f --- /dev/null +++ b/vendor/github.com/moby/patternmatcher/LICENSE @@ -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 + implied, including, without limitation, any warranties or conditions + 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. diff --git a/vendor/github.com/moby/patternmatcher/NOTICE b/vendor/github.com/moby/patternmatcher/NOTICE new file mode 100644 index 0000000..e515464 --- /dev/null +++ b/vendor/github.com/moby/patternmatcher/NOTICE @@ -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. diff --git a/vendor/github.com/moby/patternmatcher/ignorefile/ignorefile.go b/vendor/github.com/moby/patternmatcher/ignorefile/ignorefile.go new file mode 100644 index 0000000..94ea5a0 --- /dev/null +++ b/vendor/github.com/moby/patternmatcher/ignorefile/ignorefile.go @@ -0,0 +1,73 @@ +package ignorefile + +import ( + "bufio" + "bytes" + "io" + "path/filepath" + "strings" +) + +// ReadAll reads an ignore file from a reader and returns the list of file +// patterns to ignore, applying the following rules: +// +// - An UTF8 BOM header (if present) is stripped. +// - Lines starting with "#" are considered comments and are skipped. +// +// For remaining lines: +// +// - Leading and trailing whitespace is removed from each ignore pattern. +// - It uses [filepath.Clean] to get the shortest/cleanest path for +// ignore patterns. +// - Leading forward-slashes ("/") are removed from ignore patterns, +// so "/some/path" and "some/path" are considered equivalent. +func ReadAll(reader io.Reader) ([]string, error) { + if reader == nil { + return nil, nil + } + + var excludes []string + currentLine := 0 + utf8bom := []byte{0xEF, 0xBB, 0xBF} + + scanner := bufio.NewScanner(reader) + for scanner.Scan() { + scannedBytes := scanner.Bytes() + // We trim UTF8 BOM + if currentLine == 0 { + scannedBytes = bytes.TrimPrefix(scannedBytes, utf8bom) + } + pattern := string(scannedBytes) + currentLine++ + // Lines starting with # (comments) are ignored before processing + if strings.HasPrefix(pattern, "#") { + continue + } + pattern = strings.TrimSpace(pattern) + if pattern == "" { + continue + } + // normalize absolute paths to paths relative to the context + // (taking care of '!' prefix) + invert := pattern[0] == '!' + if invert { + pattern = strings.TrimSpace(pattern[1:]) + } + if len(pattern) > 0 { + pattern = filepath.Clean(pattern) + pattern = filepath.ToSlash(pattern) + if len(pattern) > 1 && pattern[0] == '/' { + pattern = pattern[1:] + } + } + if invert { + pattern = "!" + pattern + } + + excludes = append(excludes, pattern) + } + if err := scanner.Err(); err != nil { + return nil, err + } + return excludes, nil +} diff --git a/vendor/github.com/moby/patternmatcher/patternmatcher.go b/vendor/github.com/moby/patternmatcher/patternmatcher.go new file mode 100644 index 0000000..37a1a59 --- /dev/null +++ b/vendor/github.com/moby/patternmatcher/patternmatcher.go @@ -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) +} |