diff options
Diffstat (limited to 'sha1_name.c')
| -rw-r--r-- | sha1_name.c | 63 |
1 files changed, 46 insertions, 17 deletions
diff --git a/sha1_name.c b/sha1_name.c index 65ad066d9b..b1873d8113 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -343,7 +343,6 @@ static int get_short_sha1(const char *name, int len, unsigned char *sha1, return status; } - int for_each_abbrev(const char *prefix, each_abbrev_fn fn, void *cb_data) { char hex_pfx[40]; @@ -547,7 +546,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1) if (read_ref_at(real_ref, at_time, nth, sha1, NULL, &co_time, &co_tz, &co_cnt)) { if (!len) { - if (!prefixcmp(real_ref, "refs/heads/")) { + if (starts_with(real_ref, "refs/heads/")) { str = real_ref + 11; len = strlen(real_ref + 11); } else { @@ -582,8 +581,6 @@ static int get_parent(const char *name, int len, if (ret) return ret; commit = lookup_commit_reference(sha1); - if (!commit) - return -1; if (parse_commit(commit)) return -1; if (!idx) { @@ -677,13 +674,15 @@ static int peel_onion(const char *name, int len, unsigned char *sha1) return -1; sp++; /* beginning of type name, or closing brace for empty */ - if (!strncmp(commit_type, sp, 6) && sp[6] == '}') + if (starts_with(sp, "commit}")) expected_type = OBJ_COMMIT; - else if (!strncmp(tree_type, sp, 4) && sp[4] == '}') + else if (starts_with(sp, "tag}")) + expected_type = OBJ_TAG; + else if (starts_with(sp, "tree}")) expected_type = OBJ_TREE; - else if (!strncmp(blob_type, sp, 4) && sp[4] == '}') + else if (starts_with(sp, "blob}")) expected_type = OBJ_BLOB; - else if (!prefixcmp(sp, "object}")) + else if (starts_with(sp, "object}")) expected_type = OBJ_ANY; else if (sp[0] == '}') expected_type = OBJ_NONE; @@ -910,7 +909,7 @@ static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1, const char *match = NULL, *target = NULL; size_t len; - if (!prefixcmp(message, "checkout: moving from ")) { + if (starts_with(message, "checkout: moving from ")) { match = message + strlen("checkout: moving from "); target = strstr(match, " to "); } @@ -1004,6 +1003,28 @@ int get_sha1_mb(const char *name, unsigned char *sha1) return st; } +/* parse @something syntax, when 'something' is not {.*} */ +static int interpret_empty_at(const char *name, int namelen, int len, struct strbuf *buf) +{ + const char *next; + + if (len || name[1] == '{') + return -1; + + /* make sure it's a single @, or @@{.*}, not @foo */ + next = strchr(name + len + 1, '@'); + if (next && next[1] != '{') + return -1; + if (!next) + next = name + namelen; + if (next != name + 1) + return -1; + + strbuf_reset(buf); + strbuf_add(buf, "HEAD", 4); + return 1; +} + static int reinterpret(const char *name, int namelen, int len, struct strbuf *buf) { /* we have extra data, which might need further processing */ @@ -1012,7 +1033,7 @@ static int reinterpret(const char *name, int namelen, int len, struct strbuf *bu int ret; strbuf_add(buf, name + len, namelen - len); - ret = interpret_branch_name(buf->buf, &tmp); + ret = interpret_branch_name(buf->buf, buf->len, &tmp); /* that data was not interpreted, remove our cruft */ if (ret < 0) { strbuf_setlen(buf, used); @@ -1046,14 +1067,16 @@ static int reinterpret(const char *name, int namelen, int len, struct strbuf *bu * If the input was ok but there are not N branch switches in the * reflog, it returns 0. */ -int interpret_branch_name(const char *name, struct strbuf *buf) +int interpret_branch_name(const char *name, int namelen, struct strbuf *buf) { char *cp; struct branch *upstream; - int namelen = strlen(name); int len = interpret_nth_prior_checkout(name, buf); int tmp_len; + if (!namelen) + namelen = strlen(name); + if (!len) { return len; /* syntax Ok, not enough switches */ } else if (len > 0) { @@ -1066,9 +1089,15 @@ int interpret_branch_name(const char *name, struct strbuf *buf) cp = strchr(name, '@'); if (!cp) return -1; + + len = interpret_empty_at(name, namelen, cp - name, buf); + if (len > 0) + return reinterpret(name, namelen, len, buf); + tmp_len = upstream_mark(cp, namelen - (cp - name)); if (!tmp_len) return -1; + len = cp + tmp_len - name; cp = xstrndup(name, cp - name); upstream = branch_get(*cp ? cp : NULL); @@ -1100,7 +1129,7 @@ int interpret_branch_name(const char *name, struct strbuf *buf) int strbuf_branchname(struct strbuf *sb, const char *name) { int len = strlen(name); - int used = interpret_branch_name(name, sb); + int used = interpret_branch_name(name, len, sb); if (used == len) return 0; @@ -1130,13 +1159,13 @@ int get_sha1(const char *name, unsigned char *sha1) } /* - * Many callers know that the user meant to name a committish by + * Many callers know that the user meant to name a commit-ish by * syntactical positions where the object name appears. Calling this * function allows the machinery to disambiguate shorter-than-unique - * abbreviated object names between committish and others. + * abbreviated object names between commit-ish and others. * * Note that this does NOT error out when the named object is not a - * committish. It is merely to give a hint to the disambiguation + * commit-ish. It is merely to give a hint to the disambiguation * machinery. */ int get_sha1_committish(const char *name, unsigned char *sha1) @@ -1273,7 +1302,7 @@ static void diagnose_invalid_index_path(int stage, static char *resolve_relative_path(const char *rel) { - if (prefixcmp(rel, "./") && prefixcmp(rel, "../")) + if (!starts_with(rel, "./") && !starts_with(rel, "../")) return NULL; if (!startup_info) |