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format-patch: introduce helper function last_line_length()

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Currently, an open-coded loop to calculate the length of the last
line of a string buffer is used in multiple places.

Move that code into a function of its own.

Signed-off-by: Jan H. Schönherr <schnhrr@cs.tu-berlin.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jan H. Schönherr 2012-10-18 16:43:31 +02:00 committed by Junio C Hamano
parent 94f6cdf693
commit f9b7204b6d
1 changed files with 13 additions and 12 deletions
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25
pretty.c
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@ -240,6 +240,17 @@ static int has_rfc822_specials(const char *s, int len)
return 0;
}
static int last_line_length(struct strbuf *sb)
{
int i;
/* How many bytes are already used on the last line? */
for (i = sb->len - 1; i >= 0; i--)
if (sb->buf[i] == '\n')
break;
return sb->len - (i + 1);
}
static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
{
int i;
@ -275,13 +286,7 @@ static void add_rfc2047(struct strbuf *sb, const char *line, int len,
static const int max_length = 78; /* per rfc2822 */
static const int max_encoded_length = 76; /* per rfc2047 */
int i;
int line_len;
/* How many bytes are already used on the current line? */
for (i = sb->len - 1; i >= 0; i--)
if (sb->buf[i] == '\n')
break;
line_len = sb->len - (i+1);
int line_len = last_line_length(sb);
for (i = 0; i < len; i++) {
int ch = line[i];
@ -346,7 +351,6 @@ void pp_user_info(const struct pretty_print_context *pp,
if (pp->fmt == CMIT_FMT_EMAIL) {
char *name_tail = strchr(line, '<');
int display_name_length;
int final_line;
if (!name_tail)
return;
while (line < name_tail && isspace(name_tail[-1]))
@ -361,10 +365,7 @@ void pp_user_info(const struct pretty_print_context *pp,
add_rfc2047(sb, quoted.buf, quoted.len, encoding);
strbuf_release(&quoted);
}
for (final_line = 0; final_line < sb->len; final_line++)
if (sb->buf[sb->len - final_line - 1] == '\n')
break;
if (namelen - display_name_length + final_line > 78) {
if (namelen - display_name_length + last_line_length(sb) > 78) {
strbuf_addch(sb, '\n');
if (!isspace(name_tail[0]))
strbuf_addch(sb, ' ');