117 lines
4.6 KiB
C#
117 lines
4.6 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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#define RESOURCE_BASE_VERSION {4}
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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 resourceVersion = "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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resourceVersion = versionStr.Replace(".", ", ");
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}
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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, resourceVersion);
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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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