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log-tree: factor out fmt_output_email_subject()

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Use a strbuf to store the subject prefix string and move its
construction into its own function.  This gets rid of two arbitrary
length limits and allows the string to be added by callers directly.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2017-03-01 12:36:38 +01:00 committed by Junio C Hamano
parent 3b9e3c2ced
commit 8ffc8dc6ba
2 changed files with 21 additions and 20 deletions
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40
log-tree.c
View File

@ -332,35 +332,33 @@ void fmt_output_commit(struct strbuf *filename,
strbuf_release(&subject);
}
void fmt_output_email_subject(struct strbuf *sb, struct rev_info *opt)
{
if (opt->total > 0) {
strbuf_addf(sb, "Subject: [%s%s%0*d/%d] ",
opt->subject_prefix,
*opt->subject_prefix ? " " : "",
digits_in_number(opt->total),
opt->nr, opt->total);
} else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
strbuf_addf(sb, "Subject: [%s] ",
opt->subject_prefix);
} else {
strbuf_addstr(sb, "Subject: ");
}
}
void log_write_email_headers(struct rev_info *opt, struct commit *commit,
const char **subject_p,
const char **extra_headers_p,
int *need_8bit_cte_p)
{
const char *subject = NULL;
static struct strbuf subject = STRBUF_INIT;
const char *extra_headers = opt->extra_headers;
const char *name = oid_to_hex(opt->zero_commit ?
&null_oid : &commit->object.oid);
*need_8bit_cte_p = 0; /* unknown */
if (opt->total > 0) {
static char buffer[64];
snprintf(buffer, sizeof(buffer),
"Subject: [%s%s%0*d/%d] ",
opt->subject_prefix,
*opt->subject_prefix ? " " : "",
digits_in_number(opt->total),
opt->nr, opt->total);
subject = buffer;
} else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
static char buffer[256];
snprintf(buffer, sizeof(buffer),
"Subject: [%s] ",
opt->subject_prefix);
subject = buffer;
} else {
subject = "Subject: ";
}
fprintf(opt->diffopt.file, "From %s Mon Sep 17 00:00:00 2001\n", name);
graph_show_oneline(opt->graph);
@ -417,7 +415,9 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
opt->diffopt.stat_sep = buffer;
strbuf_release(&filename);
}
*subject_p = subject;
strbuf_reset(&subject);
fmt_output_email_subject(&subject, opt);
*subject_p = subject.buf;
*extra_headers_p = extra_headers;
}

1
log-tree.h
View File

@ -30,5 +30,6 @@ void load_ref_decorations(int flags);
#define FORMAT_PATCH_NAME_MAX 64
void fmt_output_commit(struct strbuf *, struct commit *, struct rev_info *);
void fmt_output_subject(struct strbuf *, const char *subject, struct rev_info *);
void fmt_output_email_subject(struct strbuf *, struct rev_info *);
#endif