ui-log: Implement support for commit graphs

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

6
cgit.c
View File

@ -57,6 +57,8 @@ void repo_config(struct cgit_repo *repo, const char *name, const char *value)
repo->defbranch = xstrdup(value);
else if (!strcmp(name, "snapshots"))
repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
else if (!strcmp(name, "enable-commit-graph"))
repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
else if (!strcmp(name, "enable-log-filecount"))
repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
else if (!strcmp(name, "enable-log-linecount"))
@ -141,6 +143,8 @@ void config_cb(const char *name, const char *value)
ctx.cfg.enable_gitweb_owner = atoi(value);
else if (!strcmp(name, "enable-index-links"))
ctx.cfg.enable_index_links = atoi(value);
else if (!strcmp(name, "enable-commit-graph"))
ctx.cfg.enable_commit_graph = atoi(value);
else if (!strcmp(name, "enable-log-filecount"))
ctx.cfg.enable_log_filecount = atoi(value);
else if (!strcmp(name, "enable-log-linecount"))
@ -540,6 +544,8 @@ void print_repo(FILE *f, struct cgit_repo *repo)
fprintf(f, "repo.section=%s\n", repo->section);
if (repo->clone_url)
fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
fprintf(f, "repo.enable-commit-graph=%d\n",
repo->enable_commit_graph);
fprintf(f, "repo.enable-log-filecount=%d\n",
repo->enable_log_filecount);
fprintf(f, "repo.enable-log-linecount=%d\n",

View File

@ -153,6 +153,11 @@ table.list td {
padding: 0.1em 0.5em 0.1em 0.5em;
}
table.list td.commitgraph {
font-family: monospace;
white-space: pre;
}
table.list td.logsubject {
font-family: monospace;
font-weight: bold;
@ -731,4 +736,4 @@ table.ssdiff td.space {
table.ssdiff td.space div {
min-height: 3em;
}
}

3
cgit.h
View File

@ -20,6 +20,7 @@
#include <xdiff/xdiff.h>
#include <utf8.h>
#include <notes.h>
#include <graph.h>
/*
@ -71,6 +72,7 @@ struct cgit_repo {
char *section;
char *clone_url;
int snapshots;
int enable_commit_graph;
int enable_log_filecount;
int enable_log_linecount;
int enable_remote_branches;
@ -188,6 +190,7 @@ struct cgit_config {
int enable_filter_overrides;
int enable_gitweb_owner;
int enable_index_links;
int enable_commit_graph;
int enable_log_filecount;
int enable_log_linecount;
int enable_remote_branches;

View File

@ -90,7 +90,12 @@ embedded::
Flag which, when set to "1", will make cgit generate a html fragment
suitable for embedding in other html pages. Default value: none. See
also: "noheader".
enable-commit-graph::
Flag which, when set to "1", will make cgit print an ASCII-art commit
history graph to the left of the commit messages in the repository
log page. Default value: "0".
enable-filter-overrides::
Flag which, when set to "1", allows all filter settings to be
overridden in repository-specific cgitrc files. Default value: none.
@ -354,6 +359,10 @@ repo.defbranch::
repo.desc::
The value to show as repository description. Default value: none.
repo.enable-commit-graph::
A flag which can be used to disable the global setting
`enable-commit-graph'. Default value: none.
repo.enable-log-filecount::
A flag which can be used to disable the global setting
`enable-log-filecount'. Default value: none.
@ -441,6 +450,10 @@ css=/css/cgit.css
enable-index-links=1
# Enable ASCII art commit history graph on the log pages
enable-commit-graph=1
# Show number of affected files per commit on the log pages
enable-log-filecount=1

View File

@ -56,6 +56,7 @@ struct cgit_repo *cgit_add_repo(const char *url)
ret->section = ctx.cfg.section;
ret->defbranch = "master";
ret->snapshots = ctx.cfg.snapshots;
ret->enable_commit_graph = ctx.cfg.enable_commit_graph;
ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
ret->enable_remote_branches = ctx.cfg.enable_remote_branches;

107
ui-log.c
View File

@ -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);