/// <summary>
/// Parses the output of git status --porcelain=v2
/// </summary>
/// <param name="lines">Output lines</param>
/// <returns>Parsed <see cref="GitPorcelainInfo"/> object</returns>
public static GitPorcelainInfo ParseGitPorcelain(string lines)
{
if (string.IsNullOrEmpty(lines))
{
return(null);
}
//Definition of parsers per line type
var parsers = new Dictionary <char, GitPorcelainLineParser>()
{
{ '1', GitPorcelainItemType1Parser },
{ '#', GitPorcelainItemHeaderParser },
{ '?', GitPorcelainItemUnTrackedParser },
{ '!', GitPorcelainItemIgnoredParser }
};
var gitPorcelainInfo = new GitPorcelainInfo();
foreach (var lineRaw in lines.Split(new[] { Environment.NewLine }, StringSplitOptions.None))
{
var line = lineRaw.Trim();
if (string.IsNullOrEmpty(line))
{
continue;
}
//Get line type
var lineType = line[0];
line = line.Substring(1).Trim();
//Try to get the parser based on the line type
if (!parsers.TryGetValue(lineType, out var parser))
{
continue;
}
//Call parser and add the new file item if available. Parser can also modify the root gitPorcelainInfo object if needed
var newItem = parser(line, gitPorcelainInfo);
if (newItem != null)
{
gitPorcelainInfo.Files.Add(newItem);
}
}
return(gitPorcelainInfo);
}
/// <summary>
/// Parser of header porcelain line(line type "#")
/// Currently supports #branch.xxxxx headers
/// </summary>
/// <param name="lineWithoutType">Single line from git status --porcelain=v2 without the leading char (line/parser type)</param>
/// <param name="gitInfo">Reference to the root git info object as the parser manipulates root data</param>
/// <returns>Always null</returns>
private static GitPorcelainFileItemInfo GitPorcelainItemHeaderParser(string lineWithoutType, GitPorcelainInfo gitInfo)
{
if (string.IsNullOrEmpty(lineWithoutType))
{
return(null);
}
var key = lineWithoutType.SplitByFirstSpace(out var value);
// ReSharper disable once SwitchStatementMissingSomeCases
switch (key)
{
case "branch.oid":
gitInfo.Commit = value;
break;
case "branch.head":
gitInfo.Branch = value;
break;
case "branch.upstream":
gitInfo.Upstream = value;
break;
case "branch.ab":
gitInfo.AB = value;
break;
}
return(null);
}
/// <summary>
/// Parser of porcelain line for ignored files (line type "!")
/// </summary>
/// <param name="lineWithoutType">Single line from git status --porcelain=v2 without the leading char (line/parser type)</param>
/// <param name="gitInfo">(Not used) Reference to the root git info object in case the parser needs to manipulate root data</param>
/// <returns>New instance of file item info if created by line parser otherwise null (when the <paramref name="lineWithoutType"/> is empty)</returns>
private static GitPorcelainFileItemInfo GitPorcelainItemIgnoredParser(string lineWithoutType, GitPorcelainInfo gitInfo)
{
if (string.IsNullOrEmpty(lineWithoutType))
{
return(null);
}
var item = new GitPorcelainFileItemInfo
{
FileName = lineWithoutType,
ChangeCode = "!",
StatusIndex = GitChangeTypeEnum.Ignored,
StatusWorkTree = GitChangeTypeEnum.Ignored,
IsIgnored = true
};
return(item);
}
/// <summary>
/// Parser of porcelain line for modified files (line type "1")
/// </summary>
/// <param name="lineWithoutType">Single line from git status --porcelain=v2 without the leading char (line/parser type)</param>
/// <param name="gitInfo">(Not used) Reference to the root git info object in case the parser needs to manipulate root data</param>
/// <returns>New instance of file item info if created by line parser otherwise null (when the <paramref name="lineWithoutType"/> is empty)</returns>
private static GitPorcelainFileItemInfo GitPorcelainItemType1Parser(string lineWithoutType, GitPorcelainInfo gitInfo)
{
if (string.IsNullOrEmpty(lineWithoutType))
{
return(null);
}
var item = new GitPorcelainFileItemInfo();
var line = lineWithoutType;
var xy = line.SplitByFirstSpace(out line) + " "; //ensure at least two chars
var fileName = line.LastPart(" ").Trim();
if (string.IsNullOrEmpty(fileName))
{
return(null);
}
item.ChangeCode = xy.Trim();
item.StatusIndex = GetGitChangeType(xy[0]);
item.StatusWorkTree = GetGitChangeType(xy[1]);
item.IsUnMerged = xy.Contains("U") || xy == "AA" || xy == "DD";
item.IsNotTracked = xy.Contains("?");
item.IsIgnored = xy.Contains("!");
item.FileName = fileName;
return(item);
}
