builtin/update-index: convert file to struct object_id
authorbrian m. carlson <sandals@crustytoothpaste.net>
Mon, 5 Sep 2016 20:08:06 +0000 (20:08 +0000)
committerJunio C Hamano <gitster@pobox.com>
Wed, 7 Sep 2016 19:59:43 +0000 (12:59 -0700)
Convert all functions to use struct object_id, and replace instances of
hardcoded 40, 41, and 42 with appropriate references to GIT_SHA1_HEXSZ.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin/update-index.c

index a60a30a..44fb2e4 100644 (file)
@@ -312,7 +312,7 @@ static int add_one_path(const struct cache_entry *old, const char *path, int len
  */
 static int process_directory(const char *path, int len, struct stat *st)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        int pos = cache_name_pos(path, len);
 
        /* Exact match: file or existing gitlink */
@@ -321,7 +321,7 @@ static int process_directory(const char *path, int len, struct stat *st)
                if (S_ISGITLINK(ce->ce_mode)) {
 
                        /* Do nothing to the index if there is no HEAD! */
-                       if (resolve_gitlink_ref(path, "HEAD", sha1) < 0)
+                       if (resolve_gitlink_ref(path, "HEAD", oid.hash) < 0)
                                return 0;
 
                        return add_one_path(ce, path, len, st);
@@ -347,7 +347,7 @@ static int process_directory(const char *path, int len, struct stat *st)
        }
 
        /* No match - should we add it as a gitlink? */
-       if (!resolve_gitlink_ref(path, "HEAD", sha1))
+       if (!resolve_gitlink_ref(path, "HEAD", oid.hash))
                return add_one_path(NULL, path, len, st);
 
        /* Error out. */
@@ -390,7 +390,7 @@ static int process_path(const char *path)
        return add_one_path(ce, path, len, &st);
 }
 
-static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
+static int add_cacheinfo(unsigned int mode, const struct object_id *oid,
                         const char *path, int stage)
 {
        int size, len, option;
@@ -403,7 +403,7 @@ static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
        size = cache_entry_size(len);
        ce = xcalloc(1, size);
 
-       hashcpy(ce->oid.hash, sha1);
+       oidcpy(&ce->oid, oid);
        memcpy(ce->name, path, len);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = len;
@@ -487,7 +487,7 @@ static void read_index_info(int nul_term_line)
        while (getline_fn(&buf, stdin) != EOF) {
                char *ptr, *tab;
                char *path_name;
-               unsigned char sha1[20];
+               struct object_id oid;
                unsigned int mode;
                unsigned long ul;
                int stage;
@@ -516,7 +516,7 @@ static void read_index_info(int nul_term_line)
                mode = ul;
 
                tab = strchr(ptr, '\t');
-               if (!tab || tab - ptr < 41)
+               if (!tab || tab - ptr < GIT_SHA1_HEXSZ + 1)
                        goto bad_line;
 
                if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
@@ -529,7 +529,8 @@ static void read_index_info(int nul_term_line)
                        ptr = tab + 1; /* point at the head of path */
                }
 
-               if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
+               if (get_oid_hex(tab - GIT_SHA1_HEXSZ, &oid) ||
+                       tab[-(GIT_SHA1_HEXSZ + 1)] != ' ')
                        goto bad_line;
 
                path_name = ptr;
@@ -557,8 +558,8 @@ static void read_index_info(int nul_term_line)
                         * ptr[-1] points at tab,
                         * ptr[-41] is at the beginning of sha1
                         */
-                       ptr[-42] = ptr[-1] = 0;
-                       if (add_cacheinfo(mode, sha1, path_name, stage))
+                       ptr[-(GIT_SHA1_HEXSZ + 2)] = ptr[-1] = 0;
+                       if (add_cacheinfo(mode, &oid, path_name, stage))
                                die("git update-index: unable to update %s",
                                    path_name);
                }
@@ -576,19 +577,19 @@ static const char * const update_index_usage[] = {
        NULL
 };
 
-static unsigned char head_sha1[20];
-static unsigned char merge_head_sha1[20];
+static struct object_id head_oid;
+static struct object_id merge_head_oid;
 
 static struct cache_entry *read_one_ent(const char *which,
-                                       unsigned char *ent, const char *path,
+                                       struct object_id *ent, const char *path,
                                        int namelen, int stage)
 {
        unsigned mode;
-       unsigned char sha1[20];
+       struct object_id oid;
        int size;
        struct cache_entry *ce;
 
-       if (get_tree_entry(ent, path, sha1, &mode)) {
+       if (get_tree_entry(ent->hash, path, oid.hash, &mode)) {
                if (which)
                        error("%s: not in %s branch.", path, which);
                return NULL;
@@ -601,7 +602,7 @@ static struct cache_entry *read_one_ent(const char *which,
        size = cache_entry_size(namelen);
        ce = xcalloc(1, size);
 
-       hashcpy(ce->oid.hash, sha1);
+       oidcpy(&ce->oid, &oid);
        memcpy(ce->name, path, namelen);
        ce->ce_flags = create_ce_flags(stage);
        ce->ce_namelen = namelen;
@@ -651,8 +652,8 @@ static int unresolve_one(const char *path)
         * stuff HEAD version in stage #2,
         * stuff MERGE_HEAD version in stage #3.
         */
-       ce_2 = read_one_ent("our", head_sha1, path, namelen, 2);
-       ce_3 = read_one_ent("their", merge_head_sha1, path, namelen, 3);
+       ce_2 = read_one_ent("our", &head_oid, path, namelen, 2);
+       ce_3 = read_one_ent("their", &merge_head_oid, path, namelen, 3);
 
        if (!ce_2 || !ce_3) {
                ret = -1;
@@ -683,9 +684,9 @@ static int unresolve_one(const char *path)
 
 static void read_head_pointers(void)
 {
-       if (read_ref("HEAD", head_sha1))
+       if (read_ref("HEAD", head_oid.hash))
                die("No HEAD -- no initial commit yet?");
-       if (read_ref("MERGE_HEAD", merge_head_sha1)) {
+       if (read_ref("MERGE_HEAD", merge_head_oid.hash)) {
                fprintf(stderr, "Not in the middle of a merge.\n");
                exit(0);
        }
@@ -725,7 +726,7 @@ static int do_reupdate(int ac, const char **av,
                       PATHSPEC_PREFER_CWD,
                       prefix, av + 1);
 
-       if (read_ref("HEAD", head_sha1))
+       if (read_ref("HEAD", head_oid.hash))
                /* If there is no HEAD, that means it is an initial
                 * commit.  Update everything in the index.
                 */
@@ -740,7 +741,7 @@ static int do_reupdate(int ac, const char **av,
                if (ce_stage(ce) || !ce_path_match(ce, &pathspec, NULL))
                        continue;
                if (has_head)
-                       old = read_one_ent(NULL, head_sha1,
+                       old = read_one_ent(NULL, &head_oid,
                                           ce->name, ce_namelen(ce), 0);
                if (old && ce->ce_mode == old->ce_mode &&
                    !oidcmp(&ce->oid, &old->oid)) {
@@ -807,7 +808,7 @@ static int resolve_undo_clear_callback(const struct option *opt,
 
 static int parse_new_style_cacheinfo(const char *arg,
                                     unsigned int *mode,
-                                    unsigned char sha1[],
+                                    struct object_id *oid,
                                     const char **path)
 {
        unsigned long ul;
@@ -822,21 +823,21 @@ static int parse_new_style_cacheinfo(const char *arg,
                return -1; /* not a new-style cacheinfo */
        *mode = ul;
        endp++;
-       if (get_sha1_hex(endp, sha1) || endp[40] != ',')
+       if (get_oid_hex(endp, oid) || endp[GIT_SHA1_HEXSZ] != ',')
                return -1;
-       *path = endp + 41;
+       *path = endp + GIT_SHA1_HEXSZ + 1;
        return 0;
 }
 
 static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
                                const struct option *opt, int unset)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        unsigned int mode;
        const char *path;
 
-       if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, sha1, &path)) {
-               if (add_cacheinfo(mode, sha1, path, 0))
+       if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, &oid, &path)) {
+               if (add_cacheinfo(mode, &oid, path, 0))
                        die("git update-index: --cacheinfo cannot add %s", path);
                ctx->argv++;
                ctx->argc--;
@@ -845,8 +846,8 @@ static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
        if (ctx->argc <= 3)
                return error("option 'cacheinfo' expects <mode>,<sha1>,<path>");
        if (strtoul_ui(*++ctx->argv, 8, &mode) ||
-           get_sha1_hex(*++ctx->argv, sha1) ||
-           add_cacheinfo(mode, sha1, *++ctx->argv, 0))
+           get_oid_hex(*++ctx->argv, &oid) ||
+           add_cacheinfo(mode, &oid, *++ctx->argv, 0))
                die("git update-index: --cacheinfo cannot add %s", *ctx->argv);
        ctx->argc -= 3;
        return 0;