fix scmrev stuff to use git (copied from desmume)

src/version.h

@@ -26,7 +26,7 @@
 
 //todo - everyone will want to support this eventually, i suppose
 #ifdef _MSC_VER
-#include "svnrev.h"
+#include "scmrev.h"
 #else
 #ifdef SVN_REV
 #define SVN_REV_STR SVN_REV

vc/defaultconfig/make_scmrev.h.js

@@ -0,0 +1,100 @@
+var wshShell		= new ActiveXObject("WScript.Shell")
+var oFS				= new ActiveXObject("Scripting.FileSystemObject");
+
+var outfile			= "./defaultconfig/scmrev.h";
+var cmd_revision	= " rev-parse HEAD";
+var cmd_describe	= " describe --always --long --dirty";
+var cmd_branch		= " rev-parse --abbrev-ref HEAD";
+
+function GetGitExe()
+{
+	try
+	{
+		gitexe = wshShell.RegRead("HKCU\\Software\\GitExtensions\\gitcommand");
+		wshShell.Exec(gitexe);
+		return gitexe;
+	}
+	catch (e)
+	{}
+
+	for (var gitexe in {"git.cmd":1, "git":1, "git.bat":1})
+	{
+		try
+		{
+			wshShell.Exec(gitexe);
+			return gitexe;
+		}
+		catch (e)
+		{}
+	}
+
+	// last try - msysgit not in path (vs2015 default)
+	msyspath = "\\Git\\cmd\\git.exe";
+	gitexe = wshShell.ExpandEnvironmentStrings("%PROGRAMFILES(x86)%") + msyspath;
+	if (oFS.FileExists(gitexe)) {
+		return gitexe;
+	}
+	gitexe = wshShell.ExpandEnvironmentStrings("%PROGRAMFILES%") + msyspath;
+	if (oFS.FileExists(gitexe)) {
+		return gitexe;
+	}
+
+	WScript.Echo("Cannot find git or git.cmd, check your PATH:\n" +
+		wshShell.ExpandEnvironmentStrings("%PATH%"));
+	WScript.Quit(1);
+}
+
+function GetFirstStdOutLine(cmd)
+{
+	try
+	{
+		return wshShell.Exec(cmd).StdOut.ReadLine();
+	}
+	catch (e)
+	{
+		// catch "the system cannot find the file specified" error
+		WScript.Echo("Failed to exec " + cmd + " this should never happen");
+		WScript.Quit(1);
+	}
+}
+
+function GetFileContents(f)
+{
+	try
+	{
+		return oFS.OpenTextFile(f).ReadAll();
+	}
+	catch (e)
+	{
+		// file doesn't exist
+		return "";
+	}
+}
+
+// get info from git
+var gitexe = GetGitExe();
+var revision	= GetFirstStdOutLine(gitexe + cmd_revision);
+var describe	= GetFirstStdOutLine(gitexe + cmd_describe);
+var branch		= GetFirstStdOutLine(gitexe + cmd_branch);
+var isStable	= +("master" == branch || "stable" == branch);
+
+// remove hash (and trailing "-0" if needed) from description
+describe = describe.replace(/(-0)?-[^-]+(-dirty)?$/, '$2');
+
+var out_contents =
+	"#define SCM_REV_STR \"" + revision + "\"\n" +
+	"#define SCM_DESC_STR \"" + describe + "\"\n" +
+	"#define SCM_BRANCH_STR \"" + branch + "\"\n" +
+	"#define SCM_IS_MASTER " + isStable + "\n";
+
+// check if file needs updating
+if (out_contents == GetFileContents(outfile))
+{
+	WScript.Echo(outfile + " current at " + describe);
+}
+else
+{
+	// needs updating - writeout current info
+	oFS.CreateTextFile(outfile, true).Write(out_contents);
+	WScript.Echo(outfile + " updated to " + describe);
+}

vc/defaultconfig/svnrev.h

@@ -1,5 +0,0 @@
-//this should be overridden with one generated in userconfig
-//but it is here just in case to prevent compiler errors
-
-#define SVN_REV 0
-#define SVN_REV_STR "0"

vc/defaultconfig/svnrev_template.h

@@ -1,2 +0,0 @@
-#define SVN_REV $WCREV$
-#define SVN_REV_STR "$WCREV$"