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builtin-name-rev.c: split deeply nested part from the main function

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The main function of this command implementation tries to do too many
things.  Split out a handling of single input line into a separate
function to reduce nesting level and clutter.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2008-08-02 11:04:22 -07:00
parent e124554796
commit e8b55fab62
1 changed files with 41 additions and 37 deletions
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78
builtin-name-rev.c
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@ -176,6 +176,45 @@ static char const * const name_rev_usage[] = {
NULL
};
static void name_rev_line(char *p, struct name_ref_data *data)
{
int forty = 0;
char *p_start;
for (p_start = p; *p; p++) {
#define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f'))
if (!ishex(*p))
forty = 0;
else if (++forty == 40 &&
!ishex(*(p+1))) {
unsigned char sha1[40];
const char *name = NULL;
char c = *(p+1);
forty = 0;
*(p+1) = 0;
if (!get_sha1(p - 39, sha1)) {
struct object *o =
lookup_object(sha1);
if (o)
name = get_rev_name(o);
}
*(p+1) = c;
if (!name)
continue;
fwrite(p_start, p - p_start + 1, 1, stdout);
printf(" (%s)", name);
p_start = p + 1;
}
}
/* flush */
if (p_start != p)
fwrite(p_start, p - p_start, 1, stdout);
}
int cmd_name_rev(int argc, const char **argv, const char *prefix)
{
struct object_array revs = { 0, 0, NULL };
@ -234,47 +273,12 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
if (transform_stdin) {
char buffer[2048];
char *p, *p_start;
while (!feof(stdin)) {
int forty = 0;
p = fgets(buffer, sizeof(buffer), stdin);
char *p = fgets(buffer, sizeof(buffer), stdin);
if (!p)
break;
for (p_start = p; *p; p++) {
#define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f'))
if (!ishex(*p))
forty = 0;
else if (++forty == 40 &&
!ishex(*(p+1))) {
unsigned char sha1[40];
const char *name = NULL;
char c = *(p+1);
forty = 0;
*(p+1) = 0;
if (!get_sha1(p - 39, sha1)) {
struct object *o =
lookup_object(sha1);
if (o)
name = get_rev_name(o);
}
*(p+1) = c;
if (!name)
continue;
fwrite(p_start, p - p_start + 1, 1, stdout);
printf(" (%s)", name);
p_start = p + 1;
}
}
/* flush */
if (p_start != p)
fwrite(p_start, p - p_start, 1, stdout);
name_rev_line(p, &data);
}
} else if (all) {
int i, max;