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/* ui-blame.c: functions for blame output
*
* Copyright (C) 2006-2017 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-blame.h"
#include "html.h"
#include "ui-shared.h"
#include "argv-array.h"
#include "blame.h"
static char *emit_suspect_detail(struct blame_origin *suspect)
{
struct commitinfo *info;
struct strbuf detail = STRBUF_INIT;
info = cgit_parse_commit(suspect->commit);
strbuf_addf(&detail, "author %s", info->author);
if (!ctx.cfg.noplainemail)
strbuf_addf(&detail, " %s", info->author_email);
strbuf_addf(&detail, " %s\n",
show_date(info->author_date, info->author_tz,
cgit_date_mode(DATE_ISO8601)));
strbuf_addf(&detail, "committer %s", info->committer);
if (!ctx.cfg.noplainemail)
strbuf_addf(&detail, " %s", info->committer_email);
strbuf_addf(&detail, " %s\n\n",
show_date(info->committer_date, info->committer_tz,
cgit_date_mode(DATE_ISO8601)));
strbuf_addstr(&detail, info->subject);
cgit_free_commitinfo(info);
return strbuf_detach(&detail, NULL);
}
static void emit_blame_entry_hash(struct blame_entry *ent)
{
struct blame_origin *suspect = ent->suspect;
struct object_id *oid = &suspect->commit->object.oid;
char *detail = emit_suspect_detail(suspect);
cgit_commit_link(find_unique_abbrev(oid->hash, DEFAULT_ABBREV), detail,
NULL, ctx.qry.head, oid_to_hex(oid), suspect->path);
free(detail);
}
static void emit_blame_entry_linenumber(struct blame_entry *ent)
{
const char *numberfmt = "<a id='n%1$d' href='#n%1$d'>%1$d</a>\n";
unsigned long lineno = ent->lno;
while (lineno < ent->lno + ent->num_lines)
htmlf(numberfmt, ++lineno);
}
static void emit_blame_entry_line(struct blame_scoreboard *sb,
struct blame_entry *ent)
{
const char *cp, *cpend;
cp = blame_nth_line(sb, ent->lno);
cpend = blame_nth_line(sb, ent->lno + ent->num_lines);
html_ntxt(cp, cpend - cp);
}
static void emit_blame_entry(struct blame_scoreboard *sb,
struct blame_entry *ent)
{
html("<tr><td class='sha1 hashes'>");
emit_blame_entry_hash(ent);
html("</td>\n");
if (ctx.cfg.enable_tree_linenumbers) {
html("<td class='linenumbers'><pre>");
emit_blame_entry_linenumber(ent);
html("</pre></td>\n");
}
html("<td class='lines'><pre><code>");
emit_blame_entry_line(sb, ent);
html("</code></pre></td></tr>\n");
}
struct walk_tree_context {
char *curr_rev;
int match_baselen;
int state;
};
static void print_object(const unsigned char *sha1, const char *path,
const char *basename, const char *rev)
{
enum object_type type;
unsigned long size;
struct argv_array rev_argv = ARGV_ARRAY_INIT;
struct rev_info revs;
struct blame_scoreboard sb;
struct blame_origin *o;
struct blame_entry *ent = NULL;
type = sha1_object_info(sha1, &size);
if (type == OBJ_BAD) {
cgit_print_error_page(404, "Not found", "Bad object name: %s",
sha1_to_hex(sha1));
return;
}
argv_array_push(&rev_argv, "blame");
argv_array_push(&rev_argv, rev);
init_revisions(&revs, NULL);
revs.diffopt.flags.allow_textconv = 1;
setup_revisions(rev_argv.argc, rev_argv.argv, &revs, NULL);
init_scoreboard(&sb);
sb.revs = &revs;
setup_scoreboard(&sb, path, &o);
o->suspects = blame_entry_prepend(NULL, 0, sb.num_lines, o);
prio_queue_put(&sb.commits, o->commit);
blame_origin_decref(o);
sb.ent = NULL;
sb.path = path;
assign_blame(&sb, 0);
blame_sort_final(&sb);
blame_coalesce(&sb);
cgit_set_title_from_path(path);
cgit_print_layout_start();
htmlf("blob: %s (", sha1_to_hex(sha1));
cgit_plain_link("plain", NULL, NULL, ctx.qry.head, rev, path);
html(") (");
cgit_tree_link("tree", NULL, NULL, ctx.qry.head, rev, path);
html(")\n");
if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
htmlf("<div class='error'>blob size (%ldKB)"
" exceeds display size limit (%dKB).</div>",
size / 1024, ctx.cfg.max_blob_size);
return;
}
html("<table class='blame blob'>");
for (ent = sb.ent; ent; ) {
struct blame_entry *e = ent->next;
emit_blame_entry(&sb, ent);
free(ent);
ent = e;
}
html("</table>\n");
free((void *)sb.final_buf);
cgit_print_layout_end();
}
static int walk_tree(const unsigned char *sha1, struct strbuf *base,
const char *pathname, unsigned mode, int stage,
void *cbdata)
{
struct walk_tree_context *walk_tree_ctx = cbdata;
if (base->len == walk_tree_ctx->match_baselen) {
if (S_ISREG(mode)) {
struct strbuf buffer = STRBUF_INIT;
strbuf_addbuf(&buffer, base);
strbuf_addstr(&buffer, pathname);
print_object(sha1, buffer.buf, pathname,
walk_tree_ctx->curr_rev);
strbuf_release(&buffer);
walk_tree_ctx->state = 1;
} else if (S_ISDIR(mode)) {
walk_tree_ctx->state = 2;
}
} else if (base->len < INT_MAX
&& (int)base->len > walk_tree_ctx->match_baselen) {
walk_tree_ctx->state = 2;
} else if (S_ISDIR(mode)) {
return READ_TREE_RECURSIVE;
}
return 0;
}
static int basedir_len(const char *path)
{
char *p = strrchr(path, '/');
if (p)
return p - path + 1;
return 0;
}
void cgit_print_blame(void)
{
const char *rev = ctx.qry.sha1;
struct object_id oid;
struct commit *commit;
struct pathspec_item path_items = {
.match = ctx.qry.path,
.len = ctx.qry.path ? strlen(ctx.qry.path) : 0
};
struct pathspec paths = {
.nr = 1,
.items = &path_items
};
struct walk_tree_context walk_tree_ctx = {
.state = 0
};
if (!rev)
rev = ctx.qry.head;
if (get_oid(rev, &oid)) {
cgit_print_error_page(404, "Not found",
"Invalid revision name: %s", rev);
return;
}
commit = lookup_commit_reference(&oid);
if (!commit || parse_commit(commit)) {
cgit_print_error_page(404, "Not found",
"Invalid commit reference: %s", rev);
return;
}
walk_tree_ctx.curr_rev = xstrdup(rev);
walk_tree_ctx.match_baselen = (path_items.match) ?
basedir_len(path_items.match) : -1;
read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree,
&walk_tree_ctx);
if (!walk_tree_ctx.state)
cgit_print_error_page(404, "Not found", "Not found");
else if (walk_tree_ctx.state == 2)
cgit_print_error_page(404, "No blame for folders",
"Blame is not available for folders.");
free(walk_tree_ctx.curr_rev);
}
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