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diff_aligned_abbrev: use "struct oid"

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Since we're modifying this function anyway, it's a good time
to update it to the more modern "struct oid". We can also
drop some of the magic numbers in favor of GIT_SHA1_HEXSZ,
along with some descriptive comments.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2016-10-20 02:20:07 -04:00
committed by Junio C Hamano
parent d5e3b01e5b
commit d6cece51b8
3 changed files with 14 additions and 12 deletions
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20
diff.c
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@ -4157,14 +4157,15 @@ void diff_free_filepair(struct diff_filepair *p)
free(p);
}
const char *diff_aligned_abbrev(const unsigned char *sha1, int len)
const char *diff_aligned_abbrev(const struct object_id *oid, int len)
{
int abblen;
const char *abbrev;
if (len == 40)
return sha1_to_hex(sha1);
abbrev = find_unique_abbrev(sha1, len);
if (len == GIT_SHA1_HEXSZ)
return oid_to_hex(oid);
abbrev = find_unique_abbrev(oid->hash, len);
abblen = strlen(abbrev);
/*
@ -4186,15 +4187,16 @@ const char *diff_aligned_abbrev(const unsigned char *sha1, int len)
* the automatic sizing is supposed to give abblen that ensures
* uniqueness across all objects (statistically speaking).
*/
if (abblen < 37) {
static char hex[41];
if (abblen < GIT_SHA1_HEXSZ - 3) {
static char hex[GIT_SHA1_HEXSZ + 1];
if (len < abblen && abblen <= len + 2)
xsnprintf(hex, sizeof(hex), "%s%.*s", abbrev, len+3-abblen, "..");
else
xsnprintf(hex, sizeof(hex), "%s...", abbrev);
return hex;
}
return sha1_to_hex(sha1);
return oid_to_hex(oid);
}
static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt)
@ -4205,9 +4207,9 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt)
fprintf(opt->file, "%s", diff_line_prefix(opt));
if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) {
fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode,
diff_aligned_abbrev(p->one->oid.hash, opt->abbrev));
diff_aligned_abbrev(&p->one->oid, opt->abbrev));
fprintf(opt->file, "%s ",
diff_aligned_abbrev(p->two->oid.hash, opt->abbrev));
diff_aligned_abbrev(&p->two->oid, opt->abbrev));
}
if (p->score) {
fprintf(opt->file, "%c%03d%c", p->status, similarity_index(p),