[PATCH 1/2] sha1_file: Add sha1_object_type_literally and export it.
From: Karthik Nayak <hidden>
Date: 2016-06-15 23:03:55
Subsystem:
the rest · Maintainer:
Linus Torvalds
sha1_object_type_literally takes a sha value and gives the type of the given loose object, used by git cat-file -t --literally. Signed-off-by: Karthik Nayak <redacted> --- cache.h | 1 + sha1_file.c | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/cache.h b/cache.h
index 4d02efc..48086b9 100644
--- a/cache.h
+++ b/cache.h@@ -872,6 +872,7 @@ extern int git_open_noatime(const char *name); extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size); extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz); extern int parse_sha1_header(const char *hdr, unsigned long *sizep); +extern int sha1_object_type_literally(const unsigned char *sha1, char *type); /* global flag to enable extra checks when accessing packed objects */ extern int do_check_packed_object_crc;
diff --git a/sha1_file.c b/sha1_file.c
index 69a60ec..34b4810 100644
--- a/sha1_file.c
+++ b/sha1_file.c@@ -2635,6 +2635,33 @@ int sha1_object_info(const unsigned char *sha1, unsigned long *sizep) return type; } +int sha1_object_type_literally(const unsigned char *sha1, char *type) +{ + int status = 0; + unsigned long mapsize; + void *map; + git_zstream stream; + char hdr[32]; + int i; + + map = map_sha1_file(sha1, &mapsize); + if (!map) + return -1; + if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0) + status = error("unable to unpack %s header", + sha1_to_hex(sha1)); + + for (i = 0; i < 32; i++) { + if (hdr[i] == ' ') { + type[i] = '\0'; + break; + } + type[i] = hdr[i]; + } + + return status; +} + static void *read_packed_sha1(const unsigned char *sha1, enum object_type *type, unsigned long *size) {
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2.3.1.129.g11acff1.dirty