forked from ktvoelker/di
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Wrote FileMatcher class to handle globs and include/exclude lists
- Loading branch information
Showing
3 changed files
with
248 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,242 @@ | ||
| // | ||
| // Regex.cs | ||
| // | ||
| // Author: | ||
| // Karl Voelker <[email protected]> | ||
| // | ||
| // Copyright (c) 2011 Karl Voelker | ||
| // | ||
| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.IO; | ||
| using System.Text; | ||
| using System.Text.RegularExpressions; | ||
| namespace Di | ||
| { | ||
| public abstract class FileMatcher | ||
| { | ||
| private string includePattern = null; | ||
|
|
||
| private string excludePattern = null; | ||
|
|
||
| private Regex include = null; | ||
|
|
||
| private Regex exclude = null; | ||
|
|
||
| private Regex Include | ||
| { | ||
| get | ||
| { | ||
| if (include == null) | ||
| { | ||
| include = new Regex(includePattern); | ||
| } | ||
| return include; | ||
| } | ||
| } | ||
|
|
||
| private Regex Exclude | ||
| { | ||
| get | ||
| { | ||
| if (exclude == null) | ||
| { | ||
| exclude = new Regex(excludePattern); | ||
| } | ||
| return exclude; | ||
| } | ||
| } | ||
|
|
||
| public bool ExcludeExecutableFiles | ||
| { | ||
| get; | ||
| set; | ||
| } | ||
|
|
||
| public FileMatcher() | ||
| { | ||
| } | ||
|
|
||
| public void IncludeGlob(string glob) | ||
| { | ||
| include = null; | ||
| includePattern = RegexUnion(includePattern, glob); | ||
| } | ||
|
|
||
| public void ExcludeGlob(string glob) | ||
| { | ||
| exclude = null; | ||
| excludePattern = RegexUnion(excludePattern, glob); | ||
| } | ||
|
|
||
| private bool Match(string path) | ||
| { | ||
| return !Exclude.IsMatch(path) || Include.IsMatch(path); | ||
| } | ||
|
|
||
| public IList<FileInfo> MatchAll(DirectoryInfo root) | ||
| { | ||
| IList<FileInfo> result = new List<FileInfo>(); | ||
| MatchAll(root, ref result); | ||
| return result; | ||
| } | ||
|
|
||
| private void MatchAll(DirectoryInfo dir, ref IList<FileInfo> matches) | ||
| { | ||
| if (Match(dir.FullName + Path.PathSeparator)) | ||
| { | ||
| foreach (var subdir in dir.GetDirectories()) | ||
| { | ||
| MatchAll(subdir, ref matches); | ||
| } | ||
| foreach (var file in dir.GetFiles()) | ||
| { | ||
| if (Match(file.FullName)) | ||
| { | ||
| matches.Add(file); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private static string Escape(char c) | ||
| { | ||
| switch (c) | ||
| { | ||
| case '-': // This only needs to be escaped in character classes, but it doesn't hurt. | ||
| case '.': | ||
| case '$': | ||
| case '^': | ||
| case '{': | ||
| case '[': | ||
| case '(': | ||
| case '|': | ||
| case ')': | ||
| case '*': | ||
| case '+': | ||
| case '?': | ||
| case '\\': | ||
| return "\\" + c; | ||
| default: | ||
| return c.ToString(); | ||
| } | ||
| } | ||
|
|
||
| private static string RegexUnion(string a, string b) | ||
| { | ||
| if (a == null) | ||
| { | ||
| return b; | ||
| } | ||
| else if (b == null) | ||
| { | ||
| return a; | ||
| } | ||
| else | ||
| { | ||
| return "(?:(?:" + a + ")|(?:" + b + "))"; | ||
| } | ||
| } | ||
|
|
||
| private static string RegexUnion(IEnumerable<string> xs) | ||
| { | ||
| return xs.FoldLeft1(RegexUnion); | ||
| } | ||
|
|
||
| // This converts a glob to a regex. | ||
| // | ||
| // The regex should be matched against the full name of the file or directory in question. | ||
| // | ||
| // The final path component of the glob will be matched against the final path component | ||
| // of the name being matched against. | ||
| // | ||
| // The initial path component of the glob may be matched against any path component | ||
| // of the name being matched against. | ||
| // | ||
| // Glob writers should add a trailing path separator when wishing to match a directory. | ||
| // | ||
| // When the regex is being matched against a directory, the path separator should be | ||
| // appended to the name. | ||
| private static Regex GlobToRegex(string glob) | ||
| { | ||
| if (glob[0] == Path.PathSeparator) | ||
| { | ||
| throw new ArgumentException("A glob may not start with a path separator."); | ||
| } | ||
| string pathSeparator = Escape(Path.PathSeparator); | ||
| string notPathSeparator = "[^" + pathSeparator + "]"; | ||
| var pat = new StringBuilder(); | ||
| // The match must begin at the beginning of the string or at a path separator. | ||
| pat.Append("(?:^|(?<=" + pathSeparator + "))"); | ||
| bool inClass = false; | ||
| var classMembers = new HashSet<char>(); | ||
| foreach (char c in glob) | ||
| { | ||
| if (inClass) | ||
| { | ||
| if (c == ']') | ||
| { | ||
| pat.Append('('); | ||
| bool first = true; | ||
| foreach (char m in classMembers) | ||
| { | ||
| if (first) | ||
| { | ||
| first = false; | ||
| } | ||
| else | ||
| { | ||
| pat.Append('|'); | ||
| } | ||
| if (m == Path.PathSeparator) | ||
| { | ||
| throw new ArgumentException("A glob may not have a character class containing the path separator."); | ||
| } | ||
| pat.Append(Escape(m)); | ||
| } | ||
| pat.Append(')'); | ||
| } | ||
| else | ||
| { | ||
| classMembers.Add(c); | ||
| } | ||
| } | ||
| else if (c == '[') | ||
| { | ||
| inClass = true; | ||
| } | ||
| else if (c == '*') | ||
| { | ||
| pat.Append(notPathSeparator + "*"); | ||
| } | ||
| else if (c == '?') | ||
| { | ||
| pat.Append(notPathSeparator); | ||
| } | ||
| else | ||
| { | ||
| pat.Append(Escape(c)); | ||
| } | ||
| } | ||
| if (inClass) | ||
| { | ||
| throw new ArgumentException("A glob may not contain dangling character classes."); | ||
| } | ||
| pat.Append('$'); | ||
| return new Regex(pat.ToString()); | ||
| } | ||
| } | ||
| } | ||
|
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters