/// <summary>
/// Parses a gitignore file.
/// </summary>
/// <param name="path">The path of the file to parse.</param>
/// <param name="ignoreParentDirectories">If <c>true</c>, the gitignore files in parent directories will be included.</param>
/// <returns>A list of <see cref="IgnoreRule"/> instances.</returns>
public static IgnoreFile Parse(string path, bool includeParentDirectories = false)
{
var ignoreFile = new IgnoreFile(path);
var currentDir = new DirectoryInfo(Path.GetDirectoryName(path));
while (currentDir != null && currentDir.Exists)
{
var gitIgnoreFilename = Path.Combine(currentDir.FullName, ".gitignore");
if (File.Exists(gitIgnoreFilename))
{
var basePath = currentDir.FullName.Replace("\\", "/") + "/";
var localRules = new List <IgnoreRule>();
// Ignore .git folders by default
localRules.Add(IgnoreRule.Parse(basePath, ".git/"));
// Don't process parent folder if we are at the repository level
if (Directory.Exists(Path.Combine(currentDir.FullName, ".git")))
{
currentDir = null;
}
using (var stream = File.OpenText(gitIgnoreFilename))
{
string rule = null;
while (null != (rule = stream.ReadLine()))
{
// A blank line matches no files, so it can serve as a separator for readability.
if (string.IsNullOrWhiteSpace(rule))
{
continue;
}
// A line starting with # serves as a comment.
if (rule.StartsWith('#'))
{
continue;
}
var ignoreRule = IgnoreRule.Parse(basePath, rule);
if (ignoreRule != null)
{
localRules.Add(ignoreRule);
}
}
}
// Insert the rules from this folder at the top of the list, while preserving the file order
for (var i = 0; i < localRules.Count; i++)
{
ignoreFile.Rules.Insert(i, localRules[i]);
}
currentDir = currentDir?.Parent;
}
}
return(ignoreFile);
}
