diff options
| -rw-r--r-- | pretty.c | 32 |
1 files changed, 32 insertions, 0 deletions
@@ -369,8 +369,30 @@ struct format_commit_context { struct chunk committer; struct chunk encoding; size_t body_off; + + /* The following ones are relative to the result struct strbuf. */ + struct chunk abbrev_commit_hash; + struct chunk abbrev_tree_hash; + struct chunk abbrev_parent_hashes; }; +static int add_again(struct strbuf *sb, struct chunk *chunk) +{ + if (chunk->len) { + strbuf_adddup(sb, chunk->off, chunk->len); + return 1; + } + + /* + * We haven't seen this chunk before. Our caller is surely + * going to add it the hard way now. Remember the most likely + * start of the to-be-added chunk: the current end of the + * struct strbuf. + */ + chunk->off = sb->len; + return 0; +} + static void parse_commit_header(struct format_commit_context *context) { const char *msg = context->commit->buffer; @@ -447,15 +469,21 @@ static void format_commit_item(struct strbuf *sb, const char *placeholder, strbuf_addstr(sb, sha1_to_hex(commit->object.sha1)); return; case 'h': /* abbreviated commit hash */ + if (add_again(sb, &c->abbrev_commit_hash)) + return; strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV)); + c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off; return; case 'T': /* tree hash */ strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1)); return; case 't': /* abbreviated tree hash */ + if (add_again(sb, &c->abbrev_tree_hash)) + return; strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1, DEFAULT_ABBREV)); + c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off; return; case 'P': /* parent hashes */ for (p = commit->parents; p; p = p->next) { @@ -465,12 +493,16 @@ static void format_commit_item(struct strbuf *sb, const char *placeholder, } return; case 'p': /* abbreviated parent hashes */ + if (add_again(sb, &c->abbrev_parent_hashes)) + return; for (p = commit->parents; p; p = p->next) { if (p != commit->parents) strbuf_addch(sb, ' '); strbuf_addstr(sb, find_unique_abbrev( p->item->object.sha1, DEFAULT_ABBREV)); } + c->abbrev_parent_hashes.len = sb->len - + c->abbrev_parent_hashes.off; return; case 'm': /* left/right/bottom */ strbuf_addch(sb, (commit->object.flags & BOUNDARY) |