[PATCH] git-archive: make compression level of ZIP archives configurable

[Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>]

Signed-off-by: Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>

diff --git a/archive.h b/archive.h
index f3d344b..d8cca73 100644
--- a/archive.h
+++ b/archive.h
@@ -42,5 +42,6 @@ extern void parse_pathspec_arg(const cha
  */
 extern int write_tar_archive(struct archiver_args *);
 extern int write_zip_archive(struct archiver_args *);
+extern void *parse_extra_zip_args(int argc, const char **argv);
 
 #endif	/* ARCHIVE_H */
diff --git a/builtin-archive.c b/builtin-archive.c
index 6ef2c90..83e5589 100644
--- a/builtin-archive.c
+++ b/builtin-archive.c
@@ -15,8 +15,15 @@ static const char archive_usage[] =
 "git-archive --format=<fmt> [--prefix=<prefix>/] [<extra>] <tree-ish> [path...]";
 
 struct archiver archivers[] = {
-	{ .name = "tar", .write_archive = write_tar_archive },
-	{ .name = "zip", .write_archive = write_zip_archive },
+	{
+		.name		= "tar",
+		.write_archive	= write_tar_archive,
+	},
+	{
+		.name		= "zip",
+		.write_archive	= write_zip_archive,
+		.parse_extra	= parse_extra_zip_args,
+	},
 };
 
 static int run_remote_archiver(struct archiver *ar, int argc, const char **argv)
diff --git a/builtin-zip-tree.c b/builtin-zip-tree.c
index 23b4de5..fdac2bd 100644
--- a/builtin-zip-tree.c
+++ b/builtin-zip-tree.c
@@ -379,3 +379,16 @@ int write_zip_archive(struct archiver_ar
 
 	return 0;
 }
+
+void *parse_extra_zip_args(int argc, const char **argv)
+{
+	for (; argc > 0; argc--, argv++) {
+		const char *arg = argv[0];
+
+		if (arg[0] == '-' && isdigit(arg[1]) && arg[2] == '\0')
+			zlib_compression_level = arg[1] - '0';
+		else
+			die("Unknown argument for zip format: %s", arg);
+	}
+	return NULL;
+}
-
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