2c0568090c
Eliminates the need to have a copy of git accessible in the msys build environment and reduces the dependency on msys to just FFmpeg. Probably trivially faster due to how slow shell scripts are on Windows.
113 lines
4.4 KiB
C#
113 lines
4.4 KiB
C#
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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using LibGit2Sharp;
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using System;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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namespace BuildTasks {
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public class GitVersion : Microsoft.Build.Utilities.Task {
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public string Root { get; set; }
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private static ObjectId LastSVNCommit = new ObjectId("16cd907fe7482cb54a7374cd28b8501f138116be");
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private const string versionHTemplate =
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@"#define BUILD_GIT_VERSION_NUMBER {0}
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#define BUILD_GIT_VERSION_STRING ""{1}""
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#define TAGGED_RELEASE {2}
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#define INSTALLER_VERSION ""{3}""
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";
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private const string versionXmlTemplate =
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@"<?xml version=""1.0"" encoding=""utf-8""?>
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<Project ToolsVersion=""4.0"" xmlns=""http://schemas.microsoft.com/developer/msbuild/2003"">
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<PropertyGroup>
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<GitVersionNumber>{0}</GitVersionNumber>
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<GitVersionString>{1}</GitVersionString>
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</PropertyGroup>
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</Project>
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";
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private string UniqueAbbreviation(Repository repo, string full) {
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for (int len = 7; len < 40; ++len) {
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try {
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repo.Lookup(full.Substring(0, len));
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return full.Substring(0, len);
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}
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catch (AmbiguousSpecificationException) {
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continue;
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}
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}
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return full;
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}
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private void WriteIfChanged(string path, string template, params object[] args) {
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var body = string.Format(template, args).Replace("\r\n", "\n");
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try {
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var oldBody = File.ReadAllText(path);
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if (body != oldBody)
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File.WriteAllText(path, body);
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}
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catch (IOException) {
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File.WriteAllText(path, body);
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}
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}
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public override bool Execute() {
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string versionHPath = Root + "build/git_version.h";
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string versionXmlPath = Root + "build/git_version.xml";
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if (!Directory.Exists(Root + ".git")) {
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if (File.Exists(versionHPath)) {
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Log.LogMessage("Using cached version.h");
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return true;
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}
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Log.LogError("git repo not found and no cached git_version.h");
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return false;
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}
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int commits = 6962; // Rev ID when we switched away from SVN
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string installerVersion = "0.0.0";
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string versionStr = null;
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bool taggedRelease = false;
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using (var repo = new Repository(Root + ".git")) {
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commits += repo.Commits.TakeWhile(c => !c.Id.Equals(LastSVNCommit)).Count();
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foreach (var tag in repo.Tags) {
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if (!tag.Target.Id.Equals(repo.Head.Tip.Id)) continue;
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taggedRelease = true;
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versionStr = tag.Name;
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if (versionStr.StartsWith("v")) versionStr = versionStr.Substring(1);
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if (Regex.Match(versionStr, @"(\d)\.(\d)\.(\d)").Success)
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installerVersion = versionStr;
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break;
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}
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if (versionStr == null) {
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string branch = repo.Head.Name ?? "(unnamed branch)";
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versionStr = string.Format("{0}-{1}-{2}", commits, branch,
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UniqueAbbreviation(repo, repo.Head.Tip.Sha.ToString()));
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}
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}
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WriteIfChanged(versionHPath, versionHTemplate, commits, versionStr, taggedRelease ? "1" : "0", installerVersion);
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WriteIfChanged(versionXmlPath, versionXmlTemplate, commits, versionStr);
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return true;
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}
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}
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}
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