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format-patch: pass a commit to reopen_stdout()

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We use the commit to generate the patch filename in reopen_stdout()
before we redirect stdout. The cover letter codepath creates a dummy
commit with the desired subject line 'cover letter'.

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stephen Boyd 2009-03-22 19:14:03 -07:00 committed by Junio C Hamano
parent 6df514af9d
commit cd2ef591c8
1 changed files with 39 additions and 28 deletions
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67
builtin-log.c
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@ -539,30 +539,29 @@ static FILE *realstdout = NULL;
static const char *output_directory = NULL;
static int outdir_offset;
static int reopen_stdout(const char *oneline, struct rev_info *rev)
static int reopen_stdout(struct commit *commit, struct rev_info *rev)
{
char filename[PATH_MAX];
int len = 0;
struct strbuf filename = STRBUF_INIT;
int suffix_len = strlen(fmt_patch_suffix) + 1;
if (output_directory) {
len = snprintf(filename, sizeof(filename), "%s",
output_directory);
if (len >=
sizeof(filename) - FORMAT_PATCH_NAME_MAX - suffix_len)
strbuf_addstr(&filename, output_directory);
if (filename.len >=
PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len)
return error("name of output directory is too long");
if (filename[len - 1] != '/')
filename[len++] = '/';
if (filename.buf[filename.len - 1] != '/')
strbuf_addch(&filename, '/');
}
strncpy(filename + len, oneline, PATH_MAX - len);
get_patch_filename(commit, rev->nr, fmt_patch_suffix, &filename);
if (!DIFF_OPT_TST(&rev->diffopt, QUIET))
fprintf(realstdout, "%s\n", filename + outdir_offset);
fprintf(realstdout, "%s\n", filename.buf + outdir_offset);
if (freopen(filename, "w", stdout) == NULL)
return error("Cannot open patch file %s",filename);
if (freopen(filename.buf, "w", stdout) == NULL)
return error("Cannot open patch file %s", filename.buf);
strbuf_release(&filename);
return 0;
}
@ -643,26 +642,42 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
const char *encoding = "utf-8";
struct diff_options opts;
int need_8bit_cte = 0;
char filename[PATH_MAX];
struct commit *commit = NULL;
if (rev->commit_format != CMIT_FMT_EMAIL)
die("Cover letter needs email format");
if (numbered_files)
sprintf(filename, "0");
else
sprintf(filename, "%04d-cover-letter%s", 0, fmt_patch_suffix);
committer = git_committer_info(0);
head_sha1 = sha1_to_hex(head->object.sha1);
if (!use_stdout && reopen_stdout(filename, rev))
if (!numbered_files) {
/*
* We fake a commit for the cover letter so we get the filename
* desired.
*/
commit = xcalloc(1, sizeof(*commit));
commit->buffer = xmalloc(400);
snprintf(commit->buffer, 400,
"tree 0000000000000000000000000000000000000000\n"
"parent %s\n"
"author %s\n"
"committer %s\n\n"
"cover letter\n",
head_sha1, committer, committer);
}
if (!use_stdout && reopen_stdout(commit, rev))
return;
head_sha1 = sha1_to_hex(head->object.sha1);
if (commit) {
free(commit->buffer);
free(commit);
}
log_write_email_headers(rev, head_sha1, &subject_start, &extra_headers,
&need_8bit_cte);
committer = git_committer_info(0);
msg = body;
pp_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
encoding);
@ -766,7 +781,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
struct patch_ids ids;
char *add_signoff = NULL;
struct strbuf buf = STRBUF_INIT;
struct strbuf patch_filename = STRBUF_INIT;
git_config(git_format_config, NULL);
init_revisions(&rev, prefix);
@ -1070,11 +1084,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
}
get_patch_filename(numbered_files ? NULL : commit, rev.nr,
fmt_patch_suffix, &patch_filename);
if (!use_stdout && reopen_stdout(patch_filename.buf, &rev))
if (!use_stdout && reopen_stdout(numbered_files ? NULL : commit,
&rev))
die("Failed to create output files");
strbuf_setlen(&patch_filename, 0);
shown = log_tree_commit(&rev, commit);
free(commit->buffer);
commit->buffer = NULL;
@ -1098,7 +1110,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
if (!use_stdout)
fclose(stdout);
}
strbuf_release(&patch_filename);
free(list);
if (ignore_if_in_upstream)
free_patch_ids(&ids);