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ui-log: Implement support for commit graphs

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Teach CGit to print an ASCII art commit graph to the left of the commit
message, similar to 'git log --graph'. The graph adds extra lines (table
rows) to the log when needed to add/remove/shuffle edges in the graph.

When 'showmsg' is enabled, the graph is automatically padded to account
for the extra lines added by the commit message/notes.

This feature is controlled by a new config variable: "enable-commit-graph"
(disabled by default), and individual repos can control it by setting
"repo.enable-commit-graph".

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
This commit is contained in:
Johan Herland
2010-11-15 18:39:50 +01:00
committed by Lars Hjemli
parent 5a36c2a291
commit 9a8d39c668
6 changed files with 114 additions and 25 deletions
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107
ui-log.c
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@@ -77,11 +77,30 @@ void show_commit_decorations(struct commit *commit)
}
}
void print_commit(struct commit *commit)
void print_commit(struct commit *commit, struct rev_info *revs)
{
struct commitinfo *info;
char *tmp;
int cols = 2;
struct strbuf graphbuf = STRBUF_INIT;
if (ctx.repo->enable_log_filecount) {
cols++;
if (ctx.repo->enable_log_linecount)
cols++;
}
if (revs->graph) {
/* Advance graph until current commit */
while (!graph_next_line(revs->graph, &graphbuf)) {
/* Print graph segment in otherwise empty table row */
html("<tr class='nohover'><td/><td class='commitgraph'>");
html(graphbuf.buf);
htmlf("</td><td colspan='%d' /></tr>\n", cols);
strbuf_setlen(&graphbuf, 0);
}
/* Current commit's graph segment is now ready in graphbuf */
}
info = cgit_parse_commit(commit);
htmlf("<tr%s><td>",
@@ -91,8 +110,17 @@ void print_commit(struct commit *commit)
html_link_open(tmp, NULL, NULL);
cgit_print_age(commit->date, TM_WEEK * 2, FMT_SHORTDATE);
html_link_close();
htmlf("</td><td%s>",
ctx.qry.showmsg ? " class='logsubject'" : "");
html("</td>");
if (revs->graph) {
/* Print graph segment for current commit */
html("<td class='commitgraph'>");
html(graphbuf.buf);
html("</td>");
strbuf_setlen(&graphbuf, 0);
}
htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
sha1_to_hex(commit->object.sha1), ctx.qry.vpath, 0);
show_commit_decorations(commit);
@@ -112,32 +140,59 @@ void print_commit(struct commit *commit)
}
html("</td></tr>\n");
if (ctx.qry.showmsg) { /* Print message + notes in a second table row */
/* Concatenate commit message and notes in msgbuf */
if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
struct strbuf msgbuf = STRBUF_INIT;
if (info->msg && *(info->msg)) {
strbuf_addstr(&msgbuf, info->msg);
html("<tr class='nohover'><td/>"); /* Empty 'Age' column */
if (ctx.qry.showmsg) {
/* Concatenate commit message + notes in msgbuf */
if (info->msg && *(info->msg)) {
strbuf_addstr(&msgbuf, info->msg);
strbuf_addch(&msgbuf, '\n');
}
format_note(NULL, commit->object.sha1, &msgbuf,
PAGE_ENCODING,
NOTES_SHOW_HEADER | NOTES_INDENT);
strbuf_addch(&msgbuf, '\n');
}
format_note(NULL, commit->object.sha1, &msgbuf, PAGE_ENCODING,
NOTES_SHOW_HEADER | NOTES_INDENT);
strbuf_addch(&msgbuf, '\n');
strbuf_ltrim(&msgbuf);
if (ctx.repo->enable_log_filecount) {
cols++;
if (ctx.repo->enable_log_linecount)
cols++;
strbuf_ltrim(&msgbuf);
}
/* Create second table row containing msgbuf */
htmlf("<tr class='nohover'><td/><td colspan='%d' class='logmsg'>",
cols);
if (revs->graph) {
int lines = 0;
/* Calculate graph padding */
if (ctx.qry.showmsg) {
/* Count #lines in commit message + notes */
const char *p = msgbuf.buf;
lines = 1;
while ((p = strchr(p, '\n'))) {
p++;
lines++;
}
}
/* Print graph padding */
html("<td class='commitgraph'>");
while (lines > 0 || !graph_is_commit_finished(revs->graph)) {
if (graphbuf.len)
html("\n");
strbuf_setlen(&graphbuf, 0);
graph_next_line(revs->graph, &graphbuf);
html(graphbuf.buf);
lines--;
}
html("</td>\n");
}
/* Print msgbuf into remainder of table row */
htmlf("<td colspan='%d'%s>\n", cols,
ctx.qry.showmsg ? " class='logmsg'" : "");
html_txt(msgbuf.buf);
html("</td></tr>\n");
strbuf_release(&msgbuf);
}
strbuf_release(&graphbuf);
cgit_free_commitinfo(info);
}
@@ -216,6 +271,10 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
}
}
}
if (ctx.repo->enable_commit_graph) {
static const char *graph_arg = "--graph";
vector_push(&vec, &graph_arg, 0);
}
if (path) {
arg = "--";
@@ -242,8 +301,10 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
if (pager)
html("<table class='list nowrap'>");
html("<tr class='nohover'><th class='left'>Age</th>"
"<th class='left'>Commit message");
html("<tr class='nohover'><th class='left'>Age</th>");
if (ctx.repo->enable_commit_graph)
html("<th></th>");
html("<th class='left'>Commit message");
if (pager) {
html(" (");
cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
@@ -274,7 +335,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
}
for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; i++) {
print_commit(commit);
print_commit(commit, &rev);
free(commit->buffer);
commit->buffer = NULL;
free_commit_list(commit->parents);