/* ui-log.c: functions for log output
*
* Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
#include "ui-log.h"
#include "html.h"
#include "ui-shared.h"
#include "argv-array.h"
static int files, add_lines, rem_lines, lines_counted;
/*
* The list of available column colors in the commit graph.
*/
static const char *column_colors_html[] = {
"<span class='column1'>",
"<span class='column2'>",
"<span class='column3'>",
"<span class='column4'>",
"<span class='column5'>",
"<span class='column6'>",
"</span>",
};
#define COLUMN_COLORS_HTML_MAX (ARRAY_SIZE(column_colors_html) - 1)
static void count_lines(char *line, int size)
{
if (size <= 0)
return;
if (line[0] == '+')
add_lines++;
else if (line[0] == '-')
rem_lines++;
}
static void inspect_files(struct diff_filepair *pair)
{
unsigned long old_size = 0;
unsigned long new_size = 0;
int binary = 0;
files++;
if (ctx.repo->enable_log_linecount)
cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
&new_size, &binary, 0, ctx.qry.ignorews,
count_lines);
}
void show_commit_decorations(struct commit *commit)
{
const struct name_decoration *deco;
static char buf[1024];
buf[sizeof(buf) - 1] = 0;
deco = get_name_decoration(&commit->object);
html("<span class='decoration'>");
while (deco) {
if (starts_with(deco->name, "refs/heads/")) {
strncpy(buf, deco->name + 11, sizeof(buf) - 1);
cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
ctx.qry.vpath, 0, NULL, NULL,
ctx.qry.showmsg, 0);
}
else if (starts_with(deco->name, "tag: refs/tags/")) {
strncpy(buf, deco->name + 15, sizeof(buf) - 1);
cgit_tag_link(buf, NULL, "tag-deco", buf);
}
else if (starts_with(deco->name, "refs/tags/")) {
strncpy(buf, deco->name + 10, sizeof(buf) - 1);
cgit_tag_link(buf, NULL, "tag-deco", buf);
}
else if (starts_with(deco->name, "refs/remotes/")) {
if (!ctx.repo->enable_remote_branches)
goto next;
strncpy(buf, deco->name + 13, sizeof(buf) - 1);
cgit_log_link(buf, NULL, "remote-deco", NULL,
oid_to_hex(&commit->object.oid),
ctx.qry.vpath, 0, NULL, NULL,
ctx.qry.showmsg, 0);
}
else {
strncpy(buf, deco->name, sizeof(buf) - 1);
cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
oid_to_hex(&commit->object.oid),
ctx.qry.vpath);
}
next:
deco = deco->next;
}
html("</span>");
}
static void handle_rename(struct diff_filepair *pair)
{
/*
* After we have seen a rename, we generate links to the previous
* name of the file so that commit & diff views get fed the path
* that is correct for the commit they are showing, avoiding the
* need to walk the entire history leading back to every commit we
* show in order detect renames.
*/
if (0 != strcmp(ctx.qry.vpath, pair->two->path)) {
free(ctx.qry.vpath);
ctx.qry.vpath = xstrdup(pair->two->path);
}
inspect_files(pair);
}
static int show_commit(struct commit *commit, struct rev_info *revs)
{
struct commit_list *parents = commit->parents;
struct commit *parent;
int found = 0, saved_fmt;
unsigned saved_flags = revs->diffopt.flags;
/* Always show if we're not in "follow" mode with a single file. */
if (!ctx.qry.follow)
return 1;
/*
* In "follow" mode, we don't show merges. This is consistent with
* "git log --follow -- <file>".
*/
if (parents && parents->next)
return 0;
/*
* If this is the root commit, do what rev_info tells us.
*/
if (!parents)
return revs->show_root_diff;
/* When we get here we have precisely one parent. */
parent = parents->item;
/* If we can't parse the commit, let print_commit() report an error. */
if (parse_commit(parent))
return 1;
files = 0;
add_lines = 0;
rem_lines = 0;
DIFF_OPT_SET(&revs->diffopt, RECURSIVE);
diff_tree_sha1(parent->tree->object.oid.hash,
commit->tree->object.oid.hash,
"", &revs->diffopt);
diffcore_std(&revs->diffopt);
found = !diff_queue_is_empty();
saved_fmt = revs->diffopt.output_format;
revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
revs->diffopt.format_callback = cgit_diff_tree_cb;
revs->diffopt.format_callback_data = handle_rename;
diff_flush(&revs->diffopt);
revs->diffopt.output_format = saved_fmt;
revs->diffopt.flags = saved_flags;
lines_counted = 1;
return found;
}
static void print_commit(struct commit *commit, struct rev_info *revs)
{
struct commitinfo *info;
int columns = revs->graph ? 4 : 3;
struct strbuf graphbuf = STRBUF_INIT;
struct strbuf msgbuf = STRBUF_INIT;
if (ctx.repo->enable_log_filecount)
columns++;
if (ctx.repo->enable_log_linecount)
columns++;
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 class='commitgraph'>");
html(graphbuf.buf);
htmlf("</td><td colspan='%d' /></tr>\n", columns);
strbuf_setlen(&graphbuf, 0);
}
/* Current commit's graph segment is now ready in graphbuf */
}
info = cgit_parse_commit(commit);
htmlf("<tr%s>", ctx.qry.showmsg ? " class='logheader'" : "");
if (revs->graph) {
/* Print graph segment for current commit */
html("<td class='commitgraph'>");
html(graphbuf.buf);
html("</td>");
strbuf_setlen(&graphbuf, 0);
}
else {
html("<td>");
cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
html("</td>");
}
htmlf("<td%s>", ctx.qry.showmsg ? " class='logsubject'" : "");
if (ctx.qry.showmsg) {
/* line-wrap long commit subjects instead of truncating them */
size_t subject_len = strlen(info->subject);
if (subject_len > ctx.cfg.max_msg_len &&
ctx.cfg.max_msg_len >= 15) {
/* symbol for signaling line-wrap (in PAGE_ENCODING) */
const char wrap_symbol[] = { ' ', 0xE2, 0x86, 0xB5, 0 };
int i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
/* Rewind i to preceding space character */
while (i > 0 && !isspace(info->subject[i]))
--i;
if (!i) /* Oops, zero spaces. Reset i */
i = ctx.cfg.max_msg_len - strlen(wrap_symbol);
/* add remainder starting at i to msgbuf */
strbuf_add(&msgbuf, info->subject + i, subject_len - i);
strbuf_trim(&msgbuf);
strbuf_add(&msgbuf, "\n\n", 2);
/* Place wrap_symbol at position i in info->subject */
strcpy(info->subject + i, wrap_symbol);
}
}
cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
oid_to_hex(&commit->object.oid), ctx.qry.vpath);
show_commit_decorations(commit);
html("</td><td>");
cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
html_txt(info->author);
cgit_close_filter(ctx.repo->email_filter);
if (revs->graph) {
html("</td><td>");
cgit_print_age(info->committer_date, info->committer_tz, TM_WEEK * 2);
}
if (!lines_counted && (ctx.repo->enable_log_filecount ||
ctx.repo->enable_log_linecount)) {
files = 0;
add_lines = 0;
rem_lines = 0;
cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
}
if (ctx.repo->enable_log_filecount)
htmlf("</td><td>%d", files);
if (ctx.repo->enable_log_linecount)
htmlf("</td><td>-%d/+%d", rem_lines, add_lines);
html("</td></tr>\n");
if (revs->graph || ctx.qry.showmsg) { /* Print a second table row */
html("<tr class='nohover'>");
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_display_notes(commit->object.oid.hash,
&msgbuf, PAGE_ENCODING, 0);
strbuf_addch(&msgbuf, '\n');
strbuf_ltrim(&msgbuf);
}
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");
}
else
html("<td/>"); /* Empty 'Age' column */
/* Print msgbuf into remainder of table row */
htmlf("<td colspan='%d'%s>\n", columns - (revs->graph ? 1 : 0),
ctx.qry.showmsg ? " class='logmsg'" : "");
html_txt(msgbuf.buf);
html("</td></tr>\n");
}
strbuf_release(&msgbuf);
strbuf_release(&graphbuf);
cgit_free_commitinfo(info);
}
static const char *disambiguate_ref(const char *ref, int *must_free_result)
{
struct object_id oid;
struct strbuf longref = STRBUF_INIT;
strbuf_addf(&longref, "refs/heads/%s", ref);
if (get_sha1(longref.buf, oid.hash) == 0) {
*must_free_result = 1;
return strbuf_detach(&longref, NULL);
}
*must_free_result = 0;
strbuf_release(&longref);
return ref;
}
static char *next_token(char **src)
{
char *result;
if (!src || !*src)
return NULL;
while (isspace(**src))
(*src)++;
if (!**src)
return NULL;
result = *src;
while (**src) {
if (isspace(**src)) {
**src = '\0';
(*src)++;
break;
}
(*src)++;
}
return result;
}
void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern,
char *path, int pager, int commit_graph, int commit_sort)
{
struct rev_info rev;
struct commit *commit;
struct argv_array rev_argv = ARGV_ARRAY_INIT;
int i, columns = commit_graph ? 4 : 3;
int must_free_tip = 0;
/* rev_argv.argv[0] will be ignored by setup_revisions */
argv_array_push(&rev_argv, "log_rev_setup");
if (!tip)
tip = ctx.qry.head;
tip = disambiguate_ref(tip, &must_free_tip);
argv_array_push(&rev_argv, tip);
if (grep && pattern && *pattern) {
pattern = xstrdup(pattern);
if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
!strcmp(grep, "committer")) {
argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
} else if (!strcmp(grep, "range")) {
char *arg;
/* Split the pattern at whitespace and add each token
* as a revision expression. Do not accept other
* rev-list options. Also, replace the previously
* pushed tip (it's no longer relevant).
*/
argv_array_pop(&rev_argv);
while ((arg = next_token(&pattern))) {
if (*arg == '-') {
fprintf(stderr, "Bad range expr: %s\n",
arg);
break;
}
argv_array_push(&rev_argv, arg);
}
}
}
if (!path || !ctx.cfg.enable_follow_links) {
/*
* If we don't have a path, "follow" is a no-op so make sure
* the variable is set to false to avoid needing to check
* both this and whether we have a path everywhere.
*/
ctx.qry.follow = 0;
}
if (commit_graph && !ctx.qry.follow) {
argv_array_push(&rev_argv, "--graph");
argv_array_push(&rev_argv, "--color");
graph_set_column_colors(column_colors_html,
COLUMN_COLORS_HTML_MAX);
}
if (commit_sort == 1)
argv_array_push(&rev_argv, "--date-order");
else if (commit_sort == 2)
argv_array_push(&rev_argv, "--topo-order");
if (path && ctx.qry.follow)
argv_array_push(&rev_argv, "--follow");
argv_array_push(&rev_argv, "--");
if (path)
argv_array_push(&rev_argv, path);
init_revisions(&rev, NULL);
rev.abbrev = DEFAULT_ABBREV;
rev.commit_format = CMIT_FMT_DEFAULT;
rev.verbose_header = 1;
rev.show_root_diff = 0;
rev.ignore_missing = 1;
rev.simplify_history = 1;
setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
load_ref_decorations(DECORATE_FULL_REFS);
rev.show_decorations = 1;
rev.grep_filter.regflags |= REG_ICASE;
rev.diffopt.detect_rename = 1;
rev.diffopt.rename_limit = ctx.cfg.renamelimit;
if (ctx.qry.ignorews)
DIFF_XDL_SET(&rev.diffopt, IGNORE_WHITESPACE);
compile_grep_patterns(&rev.grep_filter);
prepare_revision_walk(&rev);
if (pager) {
cgit_print_layout_start();
html("<table class='list nowrap'>");
}
html("<tr class='nohover'>");
if (commit_graph)
html("<th></th>");
else
html("<th class='left'>Age</th>");
html("<th class='left'>Commit message");
if (pager) {
html(" (");
cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
NULL, ctx.qry.head, ctx.qry.sha1,
ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
ctx.qry.follow);
html(")");
}
html("</th><th class='left'>Author</th>");
if (rev.graph)
html("<th class='left'>Age</th>");
if (ctx.repo->enable_log_filecount) {
html("<th class='left'>Files</th>");
columns++;
}
if (ctx.repo->enable_log_linecount) {
html("<th class='left'>Lines</th>");
columns++;
}
html("</tr>\n");
if (ofs<0)
ofs = 0;
for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
if (show_commit(commit, &rev))
i++;
free_commit_buffer(commit);
free_commit_list(commit->parents);
commit->parents = NULL;
}
for (i = 0; i < cnt && (commit = get_revision(&rev)) != NULL; /* nop */) {
/*
* In "follow" mode, we must count the files and lines the
* first time we invoke diff on a given commit, and we need
* to do that to see if the commit touches the path we care
* about, so we do it in show_commit. Hence we must clear
* lines_counted here.
*
* This has the side effect of avoiding running diff twice
* when we are both following renames and showing file
* and/or line counts.
*/
lines_counted = 0;
if (show_commit(commit, &rev)) {
i++;
print_commit(commit, &rev);
}
free_commit_buffer(commit);
free_commit_list(commit->parents);
commit->parents = NULL;
}
if (pager) {
html("</table><ul class='pager'>");
if (ofs > 0) {
html("<li>");
cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
ctx.qry.sha1, ctx.qry.vpath,
ofs - cnt, ctx.qry.grep,
ctx.qry.search, ctx.qry.showmsg,
ctx.qry.follow);
html("</li>");
}
if ((commit = get_revision(&rev)) != NULL) {
html("<li>");
cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
ctx.qry.sha1, ctx.qry.vpath,
ofs + cnt, ctx.qry.grep,
ctx.qry.search, ctx.qry.showmsg,
ctx.qry.follow);
html("</li>");
}
html("</ul>");
cgit_print_layout_end();
} else if ((commit = get_revision(&rev)) != NULL) {
htmlf("<tr class='nohover'><td colspan='%d'>", columns);
cgit_log_link("[...]", NULL, NULL, ctx.qry.head, NULL,
ctx.qry.vpath, 0, NULL, NULL, ctx.qry.showmsg,
ctx.qry.follow);
html("</td></tr>\n");
}
/* If we allocated tip then it is safe to cast away const. */
if (must_free_tip)
free((char*) tip);
}
