637 lines
16 KiB
JavaScript
637 lines
16 KiB
JavaScript
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// A simple implementation of make-array
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function makeArray (subject) {
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return Array.isArray(subject)
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? subject
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: [subject]
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}
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const EMPTY = ''
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const SPACE = ' '
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const ESCAPE = '\\'
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const REGEX_TEST_BLANK_LINE = /^\s+$/
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const REGEX_INVALID_TRAILING_BACKSLASH = /(?:[^\\]|^)\\$/
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const REGEX_REPLACE_LEADING_EXCAPED_EXCLAMATION = /^\\!/
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const REGEX_REPLACE_LEADING_EXCAPED_HASH = /^\\#/
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const REGEX_SPLITALL_CRLF = /\r?\n/g
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// /foo,
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// ./foo,
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// ../foo,
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// .
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// ..
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const REGEX_TEST_INVALID_PATH = /^\.*\/|^\.+$/
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const SLASH = '/'
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// Do not use ternary expression here, since "istanbul ignore next" is buggy
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let TMP_KEY_IGNORE = 'node-ignore'
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/* istanbul ignore else */
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if (typeof Symbol !== 'undefined') {
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TMP_KEY_IGNORE = Symbol.for('node-ignore')
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}
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const KEY_IGNORE = TMP_KEY_IGNORE
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const define = (object, key, value) =>
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Object.defineProperty(object, key, {value})
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const REGEX_REGEXP_RANGE = /([0-z])-([0-z])/g
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const RETURN_FALSE = () => false
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// Sanitize the range of a regular expression
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// The cases are complicated, see test cases for details
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const sanitizeRange = range => range.replace(
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REGEX_REGEXP_RANGE,
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(match, from, to) => from.charCodeAt(0) <= to.charCodeAt(0)
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? match
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// Invalid range (out of order) which is ok for gitignore rules but
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// fatal for JavaScript regular expression, so eliminate it.
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: EMPTY
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)
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// See fixtures #59
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const cleanRangeBackSlash = slashes => {
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const {length} = slashes
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return slashes.slice(0, length - length % 2)
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}
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// > If the pattern ends with a slash,
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// > it is removed for the purpose of the following description,
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// > but it would only find a match with a directory.
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// > In other words, foo/ will match a directory foo and paths underneath it,
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// > but will not match a regular file or a symbolic link foo
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// > (this is consistent with the way how pathspec works in general in Git).
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// '`foo/`' will not match regular file '`foo`' or symbolic link '`foo`'
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// -> ignore-rules will not deal with it, because it costs extra `fs.stat` call
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// you could use option `mark: true` with `glob`
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// '`foo/`' should not continue with the '`..`'
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const REPLACERS = [
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[
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// remove BOM
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// TODO:
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// Other similar zero-width characters?
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/^\uFEFF/,
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() => EMPTY
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],
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// > Trailing spaces are ignored unless they are quoted with backslash ("\")
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[
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// (a\ ) -> (a )
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// (a ) -> (a)
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// (a ) -> (a)
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// (a \ ) -> (a )
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/((?:\\\\)*?)(\\?\s+)$/,
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(_, m1, m2) => m1 + (
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m2.indexOf('\\') === 0
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? SPACE
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: EMPTY
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)
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],
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// replace (\ ) with ' '
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// (\ ) -> ' '
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// (\\ ) -> '\\ '
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// (\\\ ) -> '\\ '
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[
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/(\\+?)\s/g,
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(_, m1) => {
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const {length} = m1
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return m1.slice(0, length - length % 2) + SPACE
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}
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],
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// Escape metacharacters
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// which is written down by users but means special for regular expressions.
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// > There are 12 characters with special meanings:
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// > - the backslash \,
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// > - the caret ^,
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// > - the dollar sign $,
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// > - the period or dot .,
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// > - the vertical bar or pipe symbol |,
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// > - the question mark ?,
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// > - the asterisk or star *,
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// > - the plus sign +,
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// > - the opening parenthesis (,
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// > - the closing parenthesis ),
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// > - and the opening square bracket [,
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// > - the opening curly brace {,
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// > These special characters are often called "metacharacters".
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[
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/[\\$.|*+(){^]/g,
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match => `\\${match}`
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],
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[
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// > a question mark (?) matches a single character
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/(?!\\)\?/g,
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() => '[^/]'
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],
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// leading slash
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[
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// > A leading slash matches the beginning of the pathname.
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// > For example, "/*.c" matches "cat-file.c" but not "mozilla-sha1/sha1.c".
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// A leading slash matches the beginning of the pathname
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/^\//,
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() => '^'
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],
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// replace special metacharacter slash after the leading slash
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[
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/\//g,
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() => '\\/'
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],
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[
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// > A leading "**" followed by a slash means match in all directories.
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// > For example, "**/foo" matches file or directory "foo" anywhere,
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// > the same as pattern "foo".
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// > "**/foo/bar" matches file or directory "bar" anywhere that is directly
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// > under directory "foo".
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// Notice that the '*'s have been replaced as '\\*'
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/^\^*\\\*\\\*\\\//,
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// '**/foo' <-> 'foo'
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() => '^(?:.*\\/)?'
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],
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// starting
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[
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// there will be no leading '/'
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// (which has been replaced by section "leading slash")
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// If starts with '**', adding a '^' to the regular expression also works
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/^(?=[^^])/,
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function startingReplacer () {
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// If has a slash `/` at the beginning or middle
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return !/\/(?!$)/.test(this)
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// > Prior to 2.22.1
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// > If the pattern does not contain a slash /,
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// > Git treats it as a shell glob pattern
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// Actually, if there is only a trailing slash,
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// git also treats it as a shell glob pattern
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// After 2.22.1 (compatible but clearer)
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// > If there is a separator at the beginning or middle (or both)
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// > of the pattern, then the pattern is relative to the directory
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// > level of the particular .gitignore file itself.
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// > Otherwise the pattern may also match at any level below
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// > the .gitignore level.
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? '(?:^|\\/)'
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// > Otherwise, Git treats the pattern as a shell glob suitable for
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// > consumption by fnmatch(3)
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: '^'
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}
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],
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// two globstars
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[
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// Use lookahead assertions so that we could match more than one `'/**'`
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/\\\/\\\*\\\*(?=\\\/|$)/g,
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// Zero, one or several directories
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// should not use '*', or it will be replaced by the next replacer
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// Check if it is not the last `'/**'`
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(_, index, str) => index + 6 < str.length
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// case: /**/
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// > A slash followed by two consecutive asterisks then a slash matches
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// > zero or more directories.
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// > For example, "a/**/b" matches "a/b", "a/x/b", "a/x/y/b" and so on.
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// '/**/'
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? '(?:\\/[^\\/]+)*'
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// case: /**
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// > A trailing `"/**"` matches everything inside.
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// #21: everything inside but it should not include the current folder
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: '\\/.+'
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],
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// normal intermediate wildcards
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[
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// Never replace escaped '*'
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// ignore rule '\*' will match the path '*'
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// 'abc.*/' -> go
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// 'abc.*' -> skip this rule,
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// coz trailing single wildcard will be handed by [trailing wildcard]
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/(^|[^\\]+)(\\\*)+(?=.+)/g,
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// '*.js' matches '.js'
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// '*.js' doesn't match 'abc'
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(_, p1, p2) => {
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// 1.
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// > An asterisk "*" matches anything except a slash.
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// 2.
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// > Other consecutive asterisks are considered regular asterisks
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// > and will match according to the previous rules.
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const unescaped = p2.replace(/\\\*/g, '[^\\/]*')
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return p1 + unescaped
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}
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],
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[
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// unescape, revert step 3 except for back slash
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// For example, if a user escape a '\\*',
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// after step 3, the result will be '\\\\\\*'
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/\\\\\\(?=[$.|*+(){^])/g,
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() => ESCAPE
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],
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[
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// '\\\\' -> '\\'
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/\\\\/g,
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() => ESCAPE
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],
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[
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// > The range notation, e.g. [a-zA-Z],
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// > can be used to match one of the characters in a range.
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// `\` is escaped by step 3
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/(\\)?\[([^\]/]*?)(\\*)($|\])/g,
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(match, leadEscape, range, endEscape, close) => leadEscape === ESCAPE
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// '\\[bar]' -> '\\\\[bar\\]'
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? `\\[${range}${cleanRangeBackSlash(endEscape)}${close}`
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: close === ']'
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? endEscape.length % 2 === 0
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// A normal case, and it is a range notation
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// '[bar]'
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// '[bar\\\\]'
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? `[${sanitizeRange(range)}${endEscape}]`
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// Invalid range notaton
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// '[bar\\]' -> '[bar\\\\]'
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: '[]'
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: '[]'
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],
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// ending
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[
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// 'js' will not match 'js.'
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// 'ab' will not match 'abc'
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/(?:[^*])$/,
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// WTF!
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// https://git-scm.com/docs/gitignore
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// changes in [2.22.1](https://git-scm.com/docs/gitignore/2.22.1)
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// which re-fixes #24, #38
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// > If there is a separator at the end of the pattern then the pattern
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// > will only match directories, otherwise the pattern can match both
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// > files and directories.
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// 'js*' will not match 'a.js'
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// 'js/' will not match 'a.js'
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// 'js' will match 'a.js' and 'a.js/'
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match => /\/$/.test(match)
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// foo/ will not match 'foo'
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? `${match}$`
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// foo matches 'foo' and 'foo/'
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: `${match}(?=$|\\/$)`
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],
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// trailing wildcard
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[
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/(\^|\\\/)?\\\*$/,
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(_, p1) => {
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const prefix = p1
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// '\^':
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// '/*' does not match EMPTY
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// '/*' does not match everything
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// '\\\/':
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// 'abc/*' does not match 'abc/'
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? `${p1}[^/]+`
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// 'a*' matches 'a'
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// 'a*' matches 'aa'
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: '[^/]*'
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return `${prefix}(?=$|\\/$)`
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}
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],
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]
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// A simple cache, because an ignore rule only has only one certain meaning
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const regexCache = Object.create(null)
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// @param {pattern}
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const makeRegex = (pattern, ignoreCase) => {
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let source = regexCache[pattern]
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if (!source) {
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source = REPLACERS.reduce(
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(prev, [matcher, replacer]) =>
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prev.replace(matcher, replacer.bind(pattern)),
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pattern
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)
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regexCache[pattern] = source
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}
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return ignoreCase
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? new RegExp(source, 'i')
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: new RegExp(source)
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}
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const isString = subject => typeof subject === 'string'
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// > A blank line matches no files, so it can serve as a separator for readability.
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const checkPattern = pattern => pattern
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&& isString(pattern)
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&& !REGEX_TEST_BLANK_LINE.test(pattern)
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&& !REGEX_INVALID_TRAILING_BACKSLASH.test(pattern)
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// > A line starting with # serves as a comment.
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&& pattern.indexOf('#') !== 0
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const splitPattern = pattern => pattern.split(REGEX_SPLITALL_CRLF)
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class IgnoreRule {
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constructor (
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origin,
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pattern,
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negative,
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regex
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) {
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this.origin = origin
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this.pattern = pattern
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this.negative = negative
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this.regex = regex
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}
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}
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const createRule = (pattern, ignoreCase) => {
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const origin = pattern
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let negative = false
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// > An optional prefix "!" which negates the pattern;
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if (pattern.indexOf('!') === 0) {
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negative = true
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pattern = pattern.substr(1)
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}
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pattern = pattern
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// > Put a backslash ("\") in front of the first "!" for patterns that
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// > begin with a literal "!", for example, `"\!important!.txt"`.
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.replace(REGEX_REPLACE_LEADING_EXCAPED_EXCLAMATION, '!')
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// > Put a backslash ("\") in front of the first hash for patterns that
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// > begin with a hash.
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|
|
.replace(REGEX_REPLACE_LEADING_EXCAPED_HASH, '#')
|
||
|
|
|
||
|
|
const regex = makeRegex(pattern, ignoreCase)
|
||
|
|
|
||
|
|
return new IgnoreRule(
|
||
|
|
origin,
|
||
|
|
pattern,
|
||
|
|
negative,
|
||
|
|
regex
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
const throwError = (message, Ctor) => {
|
||
|
|
throw new Ctor(message)
|
||
|
|
}
|
||
|
|
|
||
|
|
const checkPath = (path, originalPath, doThrow) => {
|
||
|
|
if (!isString(path)) {
|
||
|
|
return doThrow(
|
||
|
|
`path must be a string, but got \`${originalPath}\``,
|
||
|
|
TypeError
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
// We don't know if we should ignore EMPTY, so throw
|
||
|
|
if (!path) {
|
||
|
|
return doThrow(`path must not be empty`, TypeError)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check if it is a relative path
|
||
|
|
if (checkPath.isNotRelative(path)) {
|
||
|
|
const r = '`path.relative()`d'
|
||
|
|
return doThrow(
|
||
|
|
`path should be a ${r} string, but got "${originalPath}"`,
|
||
|
|
RangeError
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
const isNotRelative = path => REGEX_TEST_INVALID_PATH.test(path)
|
||
|
|
|
||
|
|
checkPath.isNotRelative = isNotRelative
|
||
|
|
checkPath.convert = p => p
|
||
|
|
|
||
|
|
class Ignore {
|
||
|
|
constructor ({
|
||
|
|
ignorecase = true,
|
||
|
|
ignoreCase = ignorecase,
|
||
|
|
allowRelativePaths = false
|
||
|
|
} = {}) {
|
||
|
|
define(this, KEY_IGNORE, true)
|
||
|
|
|
||
|
|
this._rules = []
|
||
|
|
this._ignoreCase = ignoreCase
|
||
|
|
this._allowRelativePaths = allowRelativePaths
|
||
|
|
this._initCache()
|
||
|
|
}
|
||
|
|
|
||
|
|
_initCache () {
|
||
|
|
this._ignoreCache = Object.create(null)
|
||
|
|
this._testCache = Object.create(null)
|
||
|
|
}
|
||
|
|
|
||
|
|
_addPattern (pattern) {
|
||
|
|
// #32
|
||
|
|
if (pattern && pattern[KEY_IGNORE]) {
|
||
|
|
this._rules = this._rules.concat(pattern._rules)
|
||
|
|
this._added = true
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
if (checkPattern(pattern)) {
|
||
|
|
const rule = createRule(pattern, this._ignoreCase)
|
||
|
|
this._added = true
|
||
|
|
this._rules.push(rule)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// @param {Array<string> | string | Ignore} pattern
|
||
|
|
add (pattern) {
|
||
|
|
this._added = false
|
||
|
|
|
||
|
|
makeArray(
|
||
|
|
isString(pattern)
|
||
|
|
? splitPattern(pattern)
|
||
|
|
: pattern
|
||
|
|
).forEach(this._addPattern, this)
|
||
|
|
|
||
|
|
// Some rules have just added to the ignore,
|
||
|
|
// making the behavior changed.
|
||
|
|
if (this._added) {
|
||
|
|
this._initCache()
|
||
|
|
}
|
||
|
|
|
||
|
|
return this
|
||
|
|
}
|
||
|
|
|
||
|
|
// legacy
|
||
|
|
addPattern (pattern) {
|
||
|
|
return this.add(pattern)
|
||
|
|
}
|
||
|
|
|
||
|
|
// | ignored : unignored
|
||
|
|
// negative | 0:0 | 0:1 | 1:0 | 1:1
|
||
|
|
// -------- | ------- | ------- | ------- | --------
|
||
|
|
// 0 | TEST | TEST | SKIP | X
|
||
|
|
// 1 | TESTIF | SKIP | TEST | X
|
||
|
|
|
||
|
|
// - SKIP: always skip
|
||
|
|
// - TEST: always test
|
||
|
|
// - TESTIF: only test if checkUnignored
|
||
|
|
// - X: that never happen
|
||
|
|
|
||
|
|
// @param {boolean} whether should check if the path is unignored,
|
||
|
|
// setting `checkUnignored` to `false` could reduce additional
|
||
|
|
// path matching.
|
||
|
|
|
||
|
|
// @returns {TestResult} true if a file is ignored
|
||
|
|
_testOne (path, checkUnignored) {
|
||
|
|
let ignored = false
|
||
|
|
let unignored = false
|
||
|
|
|
||
|
|
this._rules.forEach(rule => {
|
||
|
|
const {negative} = rule
|
||
|
|
if (
|
||
|
|
unignored === negative && ignored !== unignored
|
||
|
|
|| negative && !ignored && !unignored && !checkUnignored
|
||
|
|
) {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
const matched = rule.regex.test(path)
|
||
|
|
|
||
|
|
if (matched) {
|
||
|
|
ignored = !negative
|
||
|
|
unignored = negative
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
return {
|
||
|
|
ignored,
|
||
|
|
unignored
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// @returns {TestResult}
|
||
|
|
_test (originalPath, cache, checkUnignored, slices) {
|
||
|
|
const path = originalPath
|
||
|
|
// Supports nullable path
|
||
|
|
&& checkPath.convert(originalPath)
|
||
|
|
|
||
|
|
checkPath(
|
||
|
|
path,
|
||
|
|
originalPath,
|
||
|
|
this._allowRelativePaths
|
||
|
|
? RETURN_FALSE
|
||
|
|
: throwError
|
||
|
|
)
|
||
|
|
|
||
|
|
return this._t(path, cache, checkUnignored, slices)
|
||
|
|
}
|
||
|
|
|
||
|
|
_t (path, cache, checkUnignored, slices) {
|
||
|
|
if (path in cache) {
|
||
|
|
return cache[path]
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!slices) {
|
||
|
|
// path/to/a.js
|
||
|
|
// ['path', 'to', 'a.js']
|
||
|
|
slices = path.split(SLASH)
|
||
|
|
}
|
||
|
|
|
||
|
|
slices.pop()
|
||
|
|
|
||
|
|
// If the path has no parent directory, just test it
|
||
|
|
if (!slices.length) {
|
||
|
|
return cache[path] = this._testOne(path, checkUnignored)
|
||
|
|
}
|
||
|
|
|
||
|
|
const parent = this._t(
|
||
|
|
slices.join(SLASH) + SLASH,
|
||
|
|
cache,
|
||
|
|
checkUnignored,
|
||
|
|
slices
|
||
|
|
)
|
||
|
|
|
||
|
|
// If the path contains a parent directory, check the parent first
|
||
|
|
return cache[path] = parent.ignored
|
||
|
|
// > It is not possible to re-include a file if a parent directory of
|
||
|
|
// > that file is excluded.
|
||
|
|
? parent
|
||
|
|
: this._testOne(path, checkUnignored)
|
||
|
|
}
|
||
|
|
|
||
|
|
ignores (path) {
|
||
|
|
return this._test(path, this._ignoreCache, false).ignored
|
||
|
|
}
|
||
|
|
|
||
|
|
createFilter () {
|
||
|
|
return path => !this.ignores(path)
|
||
|
|
}
|
||
|
|
|
||
|
|
filter (paths) {
|
||
|
|
return makeArray(paths).filter(this.createFilter())
|
||
|
|
}
|
||
|
|
|
||
|
|
// @returns {TestResult}
|
||
|
|
test (path) {
|
||
|
|
return this._test(path, this._testCache, true)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const factory = options => new Ignore(options)
|
||
|
|
|
||
|
|
const isPathValid = path =>
|
||
|
|
checkPath(path && checkPath.convert(path), path, RETURN_FALSE)
|
||
|
|
|
||
|
|
factory.isPathValid = isPathValid
|
||
|
|
|
||
|
|
// Fixes typescript
|
||
|
|
factory.default = factory
|
||
|
|
|
||
|
|
module.exports = factory
|
||
|
|
|
||
|
|
// Windows
|
||
|
|
// --------------------------------------------------------------
|
||
|
|
/* istanbul ignore if */
|
||
|
|
if (
|
||
|
|
// Detect `process` so that it can run in browsers.
|
||
|
|
typeof process !== 'undefined'
|
||
|
|
&& (
|
||
|
|
process.env && process.env.IGNORE_TEST_WIN32
|
||
|
|
|| process.platform === 'win32'
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
/* eslint no-control-regex: "off" */
|
||
|
|
const makePosix = str => /^\\\\\?\\/.test(str)
|
||
|
|
|| /["<>|\u0000-\u001F]+/u.test(str)
|
||
|
|
? str
|
||
|
|
: str.replace(/\\/g, '/')
|
||
|
|
|
||
|
|
checkPath.convert = makePosix
|
||
|
|
|
||
|
|
// 'C:\\foo' <- 'C:\\foo' has been converted to 'C:/'
|
||
|
|
// 'd:\\foo'
|
||
|
|
const REGIX_IS_WINDOWS_PATH_ABSOLUTE = /^[a-z]:\//i
|
||
|
|
checkPath.isNotRelative = path =>
|
||
|
|
REGIX_IS_WINDOWS_PATH_ABSOLUTE.test(path)
|
||
|
|
|| isNotRelative(path)
|
||
|
|
}
|