diff options
Diffstat (limited to 'www/git.causal.agency/cgit/ui-blame.c')
| -rw-r--r-- | www/git.causal.agency/cgit/ui-blame.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/www/git.causal.agency/cgit/ui-blame.c b/www/git.causal.agency/cgit/ui-blame.c new file mode 100644 index 00000000..08832cd0 --- /dev/null +++ b/www/git.causal.agency/cgit/ui-blame.c @@ -0,0 +1,308 @@ +/* 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; + sb.repo = the_repository; + 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 (buffer_is_binary(buf, size)) { + html("<div class='error'>blob is binary.</div>"); + goto cleanup; + } + 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(the_repository, &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(the_repository, + repo_get_commit_tree(the_repository, commit), + "", 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); +} |