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make commit_tree a library function 

Until now, this has been part of the commit-tree builtin.
However, it is already used by other builtins (like commit,
merge, and notes), and it would be useful to access it from
library code.

The check_valid helper has to come along, too, but is given
a more library-ish name of "assert_sha1_type".

Otherwise, the code is unchanged. There are still a few
rough edges for a library function, like printing the utf8
warning to stderr, but we can address those if and when they
come up as inappropriate.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2010-04-01 20:05:23 -04:00 committed by Junio C Hamano
parent b76c056b95
commit 40d52ff77b
6 changed files with 72 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
builtin.h
View File

@ -16,9 +16,6 @@ extern const char *help_unknown_cmd(const char *cmd);
extern void prune_packed_objects(int);
extern int fmt_merge_msg(int merge_summary, struct strbuf *in,
struct strbuf *out);
extern int commit_tree(const char *msg, unsigned char *tree,
struct commit_list *parents, unsigned char *ret,
const char *author);
extern int commit_notes(struct notes_tree *t, const char *msg);
struct notes_rewrite_cfg {

70
builtin/commit-tree.c
View File

@ -9,19 +9,6 @@
#include "builtin.h"
#include "utf8.h"
/*
* FIXME! Share the code with "write-tree.c"
*/
static void check_valid(unsigned char *sha1, enum object_type expect)
{
enum object_type type = sha1_object_info(sha1, NULL);
if (type < 0)
die("%s is not a valid object", sha1_to_hex(sha1));
if (type != expect)
die("%s is not a valid '%s' object", sha1_to_hex(sha1),
typename(expect));
}
static const char commit_tree_usage[] = "git commit-tree <sha1> [-p <sha1>]* < changelog";
static void new_parent(struct commit *parent, struct commit_list **parents_p)
@ -38,61 +25,6 @@ static void new_parent(struct commit *parent, struct commit_list **parents_p)
commit_list_insert(parent, parents_p);
}
static const char commit_utf8_warn[] =
"Warning: commit message does not conform to UTF-8.\n"
"You may want to amend it after fixing the message, or set the config\n"
"variable i18n.commitencoding to the encoding your project uses.\n";
int commit_tree(const char *msg, unsigned char *tree,
struct commit_list *parents, unsigned char *ret,
const char *author)
{
int result;
int encoding_is_utf8;
struct strbuf buffer;
check_valid(tree, OBJ_TREE);
/* Not having i18n.commitencoding is the same as having utf-8 */
encoding_is_utf8 = is_encoding_utf8(git_commit_encoding);
strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */
strbuf_addf(&buffer, "tree %s\n", sha1_to_hex(tree));
/*
* NOTE! This ordering means that the same exact tree merged with a
* different order of parents will be a _different_ changeset even
* if everything else stays the same.
*/
while (parents) {
struct commit_list *next = parents->next;
strbuf_addf(&buffer, "parent %s\n",
sha1_to_hex(parents->item->object.sha1));
free(parents);
parents = next;
}
/* Person/date information */
if (!author)
author = git_author_info(IDENT_ERROR_ON_NO_NAME);
strbuf_addf(&buffer, "author %s\n", author);
strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
if (!encoding_is_utf8)
strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding);
strbuf_addch(&buffer, '\n');
/* And add the comment */
strbuf_addstr(&buffer, msg);
/* And check the encoding */
if (encoding_is_utf8 && !is_utf8(buffer.buf))
fprintf(stderr, commit_utf8_warn);
result = write_sha1_file(buffer.buf, buffer.len, commit_type, ret);
strbuf_release(&buffer);
return result;
}
int cmd_commit_tree(int argc, const char **argv, const char *prefix)
{
int i;
@ -117,7 +49,7 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix)
if (get_sha1(b, sha1))
die("Not a valid object name %s", b);
check_valid(sha1, OBJ_COMMIT);
assert_sha1_type(sha1, OBJ_COMMIT);
new_parent(lookup_commit(sha1), &parents);
}

2
cache.h
View File

@ -718,6 +718,8 @@ extern int has_loose_object_nonlocal(const unsigned char *sha1);
extern int has_pack_index(const unsigned char *sha1);
extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
extern const signed char hexval_table[256];
static inline unsigned int hexval(unsigned char c)
{

55
commit.c
View File

@ -790,3 +790,58 @@ struct commit_list *reduce_heads(struct commit_list *heads)
free(other);
return result;
}
static const char commit_utf8_warn[] =
"Warning: commit message does not conform to UTF-8.\n"
"You may want to amend it after fixing the message, or set the config\n"
"variable i18n.commitencoding to the encoding your project uses.\n";
int commit_tree(const char *msg, unsigned char *tree,
struct commit_list *parents, unsigned char *ret,
const char *author)
{
int result;
int encoding_is_utf8;
struct strbuf buffer;
assert_sha1_type(tree, OBJ_TREE);
/* Not having i18n.commitencoding is the same as having utf-8 */
encoding_is_utf8 = is_encoding_utf8(git_commit_encoding);
strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */
strbuf_addf(&buffer, "tree %s\n", sha1_to_hex(tree));
/*
* NOTE! This ordering means that the same exact tree merged with a
* different order of parents will be a _different_ changeset even
* if everything else stays the same.
*/
while (parents) {
struct commit_list *next = parents->next;
strbuf_addf(&buffer, "parent %s\n",
sha1_to_hex(parents->item->object.sha1));
free(parents);
parents = next;
}
/* Person/date information */
if (!author)
author = git_author_info(IDENT_ERROR_ON_NO_NAME);
strbuf_addf(&buffer, "author %s\n", author);
strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
if (!encoding_is_utf8)
strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding);
strbuf_addch(&buffer, '\n');
/* And add the comment */
strbuf_addstr(&buffer, msg);
/* And check the encoding */
if (encoding_is_utf8 && !is_utf8(buffer.buf))
fprintf(stderr, commit_utf8_warn);
result = write_sha1_file(buffer.buf, buffer.len, commit_type, ret);
strbuf_release(&buffer);
return result;
}

4
commit.h
View File

@ -158,4 +158,8 @@ static inline int single_parent(struct commit *commit)
struct commit_list *reduce_heads(struct commit_list *heads);
extern int commit_tree(const char *msg, unsigned char *tree,
struct commit_list *parents, unsigned char *ret,
const char *author);
#endif /* COMMIT_H */

10
sha1_file.c
View File

@ -2516,3 +2516,13 @@ int read_pack_header(int fd, struct pack_header *header)
return PH_ERROR_PROTOCOL;
return 0;
}
void assert_sha1_type(const unsigned char *sha1, enum object_type expect)
{
enum object_type type = sha1_object_info(sha1, NULL);
if (type < 0)
die("%s is not a valid object", sha1_to_hex(sha1));
if (type != expect)
die("%s is not a valid '%s' object", sha1_to_hex(sha1),
typename(expect));
}