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support gitignore like file for excluding files from deployment. Closes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text.RegularExpressions; | ||
|
|
||
| namespace Azure.Functions.Cli.Common | ||
| { | ||
| /// <summary> | ||
| /// This is a C# reimplementation of https://github.com/codemix/gitignore-parser | ||
| /// License for gitignore-parser: | ||
| /// # Copyright 2014 codemix ltd. | ||
| /// Licensed under the Apache License, Version 2.0 (the "License"); | ||
| /// you may not use this file except in compliance with the License. | ||
| /// You may obtain a copy of the License at | ||
| /// | ||
| /// [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0) | ||
| /// | ||
| /// Unless required by applicable law or agreed to in writing, software | ||
| /// distributed under the License is distributed on an "AS IS" BASIS, | ||
| /// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| /// See the License for the specific language governing permissions and | ||
| /// limitations under the License. | ||
| /// </summary> | ||
| internal class GitIgnoreParser | ||
| { | ||
| private readonly Regex[] _negative; | ||
| private readonly Regex[] _positive; | ||
|
|
||
| public GitIgnoreParser(string gitIgnoreContent) | ||
| { | ||
| var parsed = gitIgnoreContent | ||
| .Split('\n') | ||
| .Select(l => l.Trim()) | ||
| .Where(l => !l.StartsWith("#")) | ||
| .Where(l => !string.IsNullOrEmpty(l)) | ||
| .Aggregate(new List<List<string>>() { new List<string>(), new List<string>() }, (lists, line) => | ||
| { | ||
| var isNegative = line.StartsWith("!"); | ||
| if (isNegative) | ||
| { | ||
| line = line.Substring(1); | ||
| } | ||
| if (line.StartsWith("/")) | ||
| { | ||
| line = line.Substring(1); | ||
| } | ||
| if (isNegative) | ||
| { | ||
| lists[1].Add(line); | ||
| } | ||
| else | ||
| { | ||
| lists[0].Add(line); | ||
| } | ||
| return lists; | ||
| }) | ||
| .Select(l => | ||
| { | ||
| return l | ||
| .OrderBy(i => i) | ||
| .Select(i => new[] { PrepareRegexPattern(i), PreparePartialRegex(i) }) | ||
| .Aggregate(new List<List<string>>() { new List<string>(), new List<string>() }, (list, prepared) => | ||
| { | ||
| list[0].Add(prepared[0]); | ||
| list[1].Add(prepared[1]); | ||
| return list; | ||
| }); | ||
| }) | ||
| .Select(item => new[] | ||
| { | ||
| item[0].Count > 0 ? new Regex("^((" + string.Join(")|(", item[0]) + "))", RegexOptions.ECMAScript) : new Regex("$^", RegexOptions.ECMAScript), | ||
| item[1].Count > 0 ? new Regex("^((" + string.Join(")|(", item[1]) + "))", RegexOptions.ECMAScript) : new Regex("$^", RegexOptions.ECMAScript) | ||
| }) | ||
| .ToArray(); | ||
| _positive = parsed[0]; | ||
| _negative = parsed[1]; | ||
| } | ||
|
|
||
| public bool Accepts(string input) | ||
| { | ||
| if (input == "/") | ||
| { | ||
| input = input.Substring(1); | ||
| } | ||
| return _negative[0].IsMatch(input) || !_positive[0].IsMatch(input); | ||
| } | ||
|
|
||
| public bool Denies(string input) | ||
| { | ||
| if (input == "/") | ||
| { | ||
| input = input.Substring(1); | ||
| } | ||
| return !(_negative[0].IsMatch(input) || !_positive[0].IsMatch(input)); | ||
| } | ||
|
|
||
| private string PrepareRegexPattern(string pattern) | ||
| { | ||
| return Regex.Replace(pattern, @"[\-\[\]\/\{\}\(\)\+\?\.\\\^\$\|]", "\\$&", RegexOptions.ECMAScript) | ||
| .Replace("**", "(.+)") | ||
| .Replace("*", "([^\\/]+)"); | ||
| } | ||
|
|
||
| private string PreparePartialRegex(string pattern) | ||
| { | ||
| return pattern | ||
| .Split('/') | ||
| .Select((item, index) => | ||
| { | ||
| if (index == 0) | ||
| { | ||
| return "([\\/]?(" + PrepareRegexPattern(item) + "\\b|$))"; | ||
| } | ||
| else | ||
| { | ||
| return "(" + PrepareRegexPattern(item) + "\\b)"; | ||
| } | ||
| }) | ||
| .Aggregate((a, b) => a + b); | ||
| } | ||
| } | ||
| } |
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