git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH] Move parse-options's skip_prefix() to git-compat-util.h

From
Miklos Vajna <vmiklos@frugalware.org>
Date
Jun 6, 2008, 23:42 UTC
Message-ID
<1212795724-24749-1-git-send-email-vmiklos@frugalware.org>
In-Reply-To
<7vtzg7zew0.fsf@gitster.siamese.dyndns.org>

builtin-remote.c and parse-options.c both have a skip_prefix() function, for the same purpose. Move parse-options's one to git-compat-util.h and let builtin-remote use it as well.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
---
On Thu, Jun 05, 2008 at 03:38:23PM -0700, Junio C Hamano <gitster@pobox.com> wrote:
Show 8 quoted lines
> Somehow you seemed to have picked the one whose semantics is defined
> much
> less clearly.  For one thing, it takes more effort (and unnatural way
> to
> check) for the caller to detect the case where prefix did not match
> than
> the one that returns NULL.  Worse, I think this one is less efficient,
> doing strlen(prefix) twice.
Here is what I pushed to my working branch.
 builtin-remote.c  |   39 ++++++++++++++++++++++++++-------------
 git-compat-util.h |    6 ++++++
 parse-options.c   |    6 ------
 3 files changed, 32 insertions(+), 19 deletions(-)
diff --git a/builtin-remote.c b/builtin-remote.c
index c49f00f..2bf0593 100644
--- a/builtin-remote.c
+++ b/builtin-remote.c
@@ -29,12 +29,6 @@ static inline int postfixcmp(const char *string, const char *postfix)
 	return strcmp(string + len1 - len2, postfix);
 }
 
-static inline const char *skip_prefix(const char *name, const char *prefix)
-{
-	return !name ? "" :
-		prefixcmp(name, prefix) ?  name : name + strlen(prefix);
-}
-
 static int opt_parse_track(const struct option *opt, const char *arg, int not)
 {
 	struct path_list *list = opt->value;
@@ -182,12 +176,18 @@ static int config_read_branches(const char *key, const char *value, void *cb)
 			info->remote = xstrdup(value);
 		} else {
 			char *space = strchr(value, ' ');
-			value = skip_prefix(value, "refs/heads/");
+			const char *ptr = skip_prefix(value, "refs/heads/");
+			if (ptr)
+				value = ptr;
 			while (space) {
 				char *merge;
 				merge = xstrndup(value, space - value);
 				path_list_append(merge, &info->merge);
-				value = skip_prefix(space + 1, "refs/heads/");
+				ptr = skip_prefix(space + 1, "refs/heads/");
+				if (ptr)
+					value = ptr;
+				else
+					value = space + 1;
 				space = strchr(value, ' ');
 			}
 			path_list_append(xstrdup(value), &info->merge);
@@ -219,7 +219,12 @@ static int handle_one_branch(const char *refname,
 	refspec.dst = (char *)refname;
 	if (!remote_find_tracking(states->remote, &refspec)) {
 		struct path_list_item *item;
-		const char *name = skip_prefix(refspec.src, "refs/heads/");
+		const char *name, *ptr;
+		ptr = skip_prefix(refspec.src, "refs/heads/");
+		if (ptr)
+			name = ptr;
+		else
+			name = refspec.src;
 		/* symbolic refs pointing nowhere were handled already */
 		if ((flags & REF_ISSYMREF) ||
 				unsorted_path_list_has_path(&states->tracked,
@@ -248,6 +253,7 @@ static int get_ref_states(const struct ref *ref, struct ref_states *states)
 		struct path_list *target = &states->tracked;
 		unsigned char sha1[20];
 		void *util = NULL;
+		const char *ptr;
 
 		if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 			target = &states->new;
@@ -256,8 +262,10 @@ static int get_ref_states(const struct ref *ref, struct ref_states *states)
 			if (hashcmp(sha1, ref->new_sha1))
 				util = &states;
 		}
-		path_list_append(skip_prefix(ref->name, "refs/heads/"),
-				target)->util = util;
+		ptr = skip_prefix(ref->name, "refs/heads/");
+		if (!ptr)
+			ptr = ref->name;
+		path_list_append(ptr, target)->util = util;
 	}
 	free_refs(fetch_map);
 
@@ -504,10 +512,15 @@ static int show_or_prune(int argc, const char **argv, int prune)
 					"es" : "");
 			for (i = 0; i < states.remote->push_refspec_nr; i++) {
 				struct refspec *spec = states.remote->push + i;
+				const char *p = "", *q = "";
+				if (spec->src)
+					p = skip_prefix(spec->src, "refs/heads/");
+				if (spec->dst)
+					q = skip_prefix(spec->dst, "refs/heads/");
 				printf(" %s%s%s%s", spec->force ? "+" : "",
-					skip_prefix(spec->src, "refs/heads/"),
+					p ? p : spec->src,
 					spec->dst ? ":" : "",
-					skip_prefix(spec->dst, "refs/heads/"));
+					q ? q : spec->dst);
 			}
 			printf("\n");
 		}
diff --git a/git-compat-util.h b/git-compat-util.h
index 01c4045..67a0b81 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -127,6 +127,12 @@ extern void set_warn_routine(void (*routine)(const char *warn, va_list params));
 
 extern int prefixcmp(const char *str, const char *prefix);
 
+static inline const char *skip_prefix(const char *str, const char *prefix)
+{
+	size_t len = strlen(prefix);
+	return strncmp(str, prefix, len) ? NULL : str + len;
+}
+
 #ifdef NO_MMAP
 
 #ifndef PROT_READ
diff --git a/parse-options.c b/parse-options.c
index acf3fe3..b98833c 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -22,12 +22,6 @@ static inline const char *get_arg(struct optparse_t *p)
 	return *++p->argv;
 }
 
-static inline const char *skip_prefix(const char *str, const char *prefix)
-{
-	size_t len = strlen(prefix);
-	return strncmp(str, prefix, len) ? NULL : str + len;
-}
-
 static int opterror(const struct option *opt, const char *reason, int flags)
 {
 	if (flags & OPT_SHORT)

-- 
1.5.6.rc0.dirty
Previous: Junio C Hamano
Message 45 of 45 in “Build in merge”
  1. 00/10 Build in mergeMiklos Vajna, Jun 5, 2008
  2. 01/10 Move split_cmdline() to alias.cMiklos Vajna, Jun 5, 2008
  3. 02/10 Move commit_list_count() to commit.cMiklos Vajna, Jun 5, 2008
  4. 03/10 Move builtin-remote's skip_prefix() to git-compat-util.hMiklos Vajna, Jun 5, 2008
  5. 04/10 Add new test to ensure git-merge handles pull.twohead and pull.octopusMiklos Vajna, Jun 5, 2008
  6. 05/10 parseopt: add a new PARSE_OPT_ARGV0_IS_AN_OPTION optionMiklos Vajna, Jun 5, 2008
  7. 06/10 Move read_cache_unmerged() to read-cache.cMiklos Vajna, Jun 5, 2008
  8. 07/10 git-fmt-merge-msg: make it useable from other builtinsMiklos Vajna, Jun 5, 2008
  9. 08/10 Introduce commit_list_append() in commit.cMiklos Vajna, Jun 5, 2008
  10. 09/10 Introduce get_octopus_merge_bases() in commit.cMiklos Vajna, Jun 5, 2008
  11. 10/10 Build in mergeMiklos Vajna, Jun 5, 2008
  12. Junio C HamanoJun 6, 2008
  13. Junio C HamanoJun 6, 2008
  14. Johannes SchindelinJun 6, 2008
  15. Johannes SchindelinJun 6, 2008
  16. Junio C HamanoJun 6, 2008
  17. Introduce get_octopus_merge_bases() in commit.cMiklos Vajna, Jun 7, 2008
  18. Johannes SchindelinJun 9, 2008
  19. Introduce get_octopus_merge_bases() in commit.cMiklos Vajna, Jun 9, 2008
  20. Junio C HamanoJun 9, 2008
  21. Johannes SchindelinJun 9, 2008
  22. Junio C HamanoJun 9, 2008
  23. Miklos VajnaJun 9, 2008
  24. Junio C HamanoJun 9, 2008
  25. Miklos VajnaJun 9, 2008
  26. Johannes SchindelinJun 9, 2008
  27. Junio C HamanoJun 9, 2008
  28. Miklos VajnaJun 10, 2008
  29. Johannes SchindelinJun 10, 2008
  30. Johannes SchindelinJun 6, 2008
  31. Miklos VajnaJun 7, 2008
  32. Junio C HamanoJun 5, 2008
  33. Miklos VajnaJun 6, 2008
  34. Junio C HamanoJun 7, 2008
  35. Miklos VajnaJun 7, 2008
  36. Junio C HamanoJun 5, 2008
  37. Miklos VajnaJun 7, 2008
  38. Andreas EricssonJun 9, 2008
  39. git-fmt-merge-msg: make it usable from other builtinsMiklos Vajna, Jun 9, 2008
  40. Junio C HamanoJun 5, 2008
  41. Move read_cache_unmerged() to read-cache.cMiklos Vajna, Jun 7, 2008
  42. Junio C HamanoJun 5, 2008
  43. Add new test to ensure git-merge handles pull.twohead and pull.octopusMiklos Vajna, Jun 7, 2008
  44. Junio C HamanoJun 5, 2008
  45. Move parse-options's skip_prefix() to git-compat-util.hMiklos Vajna, Jun 6, 2008

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.