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-rw-r--r--unpack-file.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/unpack-file.c b/unpack-file.c
new file mode 100644
index 0000000..6ff3d51
--- /dev/null
+++ b/unpack-file.c
@@ -0,0 +1,34 @@
+#include "cache.h"
+
+static char *create_temp_file(unsigned char *sha1)
+{
+ static char path[50];
+ void *buf;
+ char type[100];
+ unsigned long size;
+ int fd;
+
+ buf = read_sha1_file(sha1, type, &size);
+ if (!buf || strcmp(type, "blob"))
+ die("unable to read blob object %s", sha1_to_hex(sha1));
+
+ strcpy(path, ".merge_file_XXXXXX");
+ fd = mkstemp(path);
+ if (fd < 0)
+ die("unable to create temp-file");
+ if (write(fd, buf, size) != size)
+ die("unable to write temp-file");
+ close(fd);
+ return path;
+}
+
+int main(int argc, char **argv)
+{
+ unsigned char sha1[20];
+
+ if (argc != 2 || get_sha1_hex(argv[1], sha1))
+ usage("unpack-file.c <sha1>");
+
+ puts(create_temp_file(sha1));
+ return 0;
+}