/* 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; unsigned long line = 0; char *detail = emit_suspect_detail(suspect); html("<span class='sha1'>"); cgit_commit_link(find_unique_abbrev(oid, DEFAULT_ABBREV), detail, NULL, ctx.qry.head, oid_to_hex(oid), suspect->path); html("</span>"); free(detail); while (line++ < ent->num_lines) html("\n"); } 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_background(struct blame_scoreboard *sb, struct blame_entry *ent) { unsigned long line; size_t len, maxlen = 2; const char* pos, *endpos; for (line = ent->lno; line < ent->lno + ent->num_lines; line++) { html("\n"); pos = blame_nth_line(sb, line); endpos = blame_nth_line(sb, line + 1); len = 0; while (pos < endpos) { len++; if (*pos++ == '\t') len = (len + 7) & ~7; } if (len > maxlen) maxlen = len; } for (len = 0; len < maxlen - 1; len++) html(" "); } struct walk_tree_context { char *curr_rev; int match_baselen; int state; }; static void print_object(const struct object_id *oid, const char *path, const char *basename, const char *rev) { enum object_type type; char *buf; 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 = oid_object_info(the_repository, oid, &size); if (type == OBJ_BAD) { cgit_print_error_page(404, "Not found", "Bad object name: %s", oid_to_hex(oid)); return; } buf = read_object_file(oid, &type, &size); if (!buf) { cgit_print_error_page(500, "Internal server error", "Error reading object %s", oid_to_hex(oid)); 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 (", oid_to_hex(oid)); 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); goto cleanup; } html("<table class='blame blob'>\n<tr>\n"); /* Commit hashes */ html("<td class='hashes'>"); for (ent = sb.ent; ent; ent = ent->next) { html("<div class='alt'><pre>"); emit_blame_entry_hash(ent); html("</pre></div>"); } html("</td>\n"); /* Line numbers */ if (ctx.cfg.enable_tree_linenumbers) { html("<td class='linenumbers'>"); for (ent = sb.ent; ent; ent = ent->next) { html("<div class='alt'><pre>"); emit_blame_entry_linenumber(ent); html("</pre></div>"); } html("</td>\n"); } html("<td class='lines'><div>"); /* Colored bars behind lines */ html("<div>"); for (ent = sb.ent; ent; ) { struct blame_entry *e = ent->next; html("<div class='alt'><pre>"); emit_blame_entry_line_background(&sb, ent); html("</pre></div>"); free(ent); ent = e; } html("</div>"); free((void *)sb.final_buf); /* Lines */ html("<pre><code>"); if (ctx.repo->source_filter) { char *filter_arg = xstrdup(basename); cgit_open_filter(ctx.repo->source_filter, filter_arg); html_raw(buf, size); cgit_close_filter(ctx.repo->source_filter); free(filter_arg); } else { html_txt(buf); } html("</code></pre>"); html("</div></td>\n"); html("</tr>\n</table>\n"); cgit_print_layout_end(); cleanup: free(buf); } static int walk_tree(const struct object_id *oid, 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(oid, 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->maybe_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); }