Show list of modified files in ui-commit.c

Compare current commit with 1.parent, and for each affected file display
current filemode, old filemode if changed, current filename and source
filename if it was a copy/rename.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 111 insertions, 0 deletions

diff --git a/ui-commit.c b/ui-commit.c
index 8916212..c5ee8e7 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -1,66 +1,177 @@
 /* ui-commit.c: generate commit view
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
+int files = 0;
+
+void print_filepair(struct diff_filepair *pair)
+{
+        char *query;
+        char *class;
+        
+        switch (pair->status) {
+        case DIFF_STATUS_ADDED:
+                class = "add";
+                break;
+        case DIFF_STATUS_COPIED:
+                class = "cpy";
+                break;
+        case DIFF_STATUS_DELETED:
+                class = "del";
+                break;
+        case DIFF_STATUS_MODIFIED:
+                class = "upd";
+                break;
+        case DIFF_STATUS_RENAMED:
+                class = "mov";
+                break;
+        case DIFF_STATUS_TYPE_CHANGED:
+                class = "typ";
+                break;
+        case DIFF_STATUS_UNKNOWN:
+                class = "unk";
+                break;
+        case DIFF_STATUS_UNMERGED:
+                class = "stg";
+                break;
+        default:
+                die("bug: unhandled diff status %c", pair->status);
+        }
+
+        html("<tr>");
+        htmlf("<td class='mode'>");
+        html_filemode(pair->two->mode);
+        if (pair->one->mode != pair->two->mode) {
+                html("<span class='modechange'>[");
+                html_filemode(pair->one->mode);
+                html("]</span>");
+        }
+        htmlf("</td><td class='%s'>", class);
+                query = fmt("id=%s", sha1_to_hex(pair->two->sha1));
+        html_link_open(cgit_pageurl(cgit_query_repo, "view", query), 
+                       NULL, NULL);
+        if (pair->status == DIFF_STATUS_COPIED || 
+            pair->status == DIFF_STATUS_RENAMED) {
+                html_txt(pair->two->path);
+                htmlf("</a> (%s from ", pair->status == DIFF_STATUS_COPIED ? 
+                      "copied" : "renamed");
+                        query = fmt("id=%s", sha1_to_hex(pair->one->sha1));
+                html_link_open(cgit_pageurl(cgit_query_repo, "view", query), 
+                               NULL, NULL);
+                html_txt(pair->one->path);
+                html("</a>)");
+        } else {
+                html_txt(pair->two->path);
+                html("</a>");
+        }
+        html("<td>");
+
+        //TODO: diffstat graph
+        
+        html("</td></tr>\n");
+                files++;
+}
+
+void diff_format_cb(struct diff_queue_struct *q,
+                    struct diff_options *options, void *data)
+{
+        int i;
+
+        for (i = 0; i < q->nr; i++) {
+                if (q->queue[i]->status == 'U')
+                        continue;
+                print_filepair(q->queue[i]);
+        }
+}
+
+void cgit_diffstat(struct commit *commit)
+{
+        struct diff_options opt;
+        int ret;
+
+        diff_setup(&opt);
+        opt.output_format = DIFF_FORMAT_CALLBACK;
+        opt.detect_rename = 1;
+        opt.recursive = 1;
+        opt.format_callback = diff_format_cb;
+        diff_setup_done(&opt);
+        
+        if (commit->parents)
+                ret = diff_tree_sha1(commit->parents->item->object.sha1,
+                                     commit->object.sha1,
+                                     "", &opt);
+        else
+                ret = diff_root_tree_sha1(commit->object.sha1, "", &opt);
+
+        diffcore_std(&opt);
+        diff_flush(&opt);
+}
+
 void cgit_print_commit(const char *hex)
 {
         struct commit *commit;
         struct commitinfo *info;
         struct commit_list *p;
         unsigned char sha1[20];
         char *query;
 
         if (get_sha1(hex, sha1)) {
                 cgit_print_error(fmt("Bad object id: %s", hex));
                 return;
         }
         commit = lookup_commit_reference(sha1);
         if (!commit) {
                 cgit_print_error(fmt("Bad commit reference: %s", hex));
                 return;
         }
         info = cgit_parse_commit(commit);
 
         html("<table class='commit-info'>\n");
         html("<tr><th>author</th><td>");
         html_txt(info->author);
         html(" ");
         html_txt(info->author_email);
         html("</td><td class='right'>");
         cgit_print_date(info->author_date);
         html("</td></tr>\n");
         html("<tr><th>committer</th><td>");
         html_txt(info->committer);
         html(" ");
         html_txt(info->committer_email);
         html("</td><td class='right'>");
         cgit_print_date(info->committer_date);
         html("</td></tr>\n");
         html("<tr><th>tree</th><td colspan='2' class='sha1'><a href='");
         query = fmt("id=%s", sha1_to_hex(commit->tree->object.sha1));
         html_attr(cgit_pageurl(cgit_query_repo, "tree", query));
         htmlf("'>%s</a></td></tr>\n", sha1_to_hex(commit->tree->object.sha1));
               for (p = commit->parents; p ; p = p->next) {
                 html("<tr><th>parent</th>"
                      "<td colspan='2' class='sha1'>"
                      "<a href='");
                 query = fmt("id=%s", sha1_to_hex(p->item->object.sha1));
                 html_attr(cgit_pageurl(cgit_query_repo, "commit", query));
                 htmlf("'>%s</a></td></tr>\n", 
                       sha1_to_hex(p->item->object.sha1));
         }
         html("</table>\n");
         html("<div class='commit-subject'>");
         html_txt(info->subject);
         html("</div>");
         html("<div class='commit-msg'>");
         html_txt(info->msg);
         html("</div>");
+        html("<table class='diffstat'>");
+        html("<tr><th colspan='3'>Affected files</tr>\n");
+        cgit_diffstat(commit);
+        htmlf("<tr><td colspan='3' class='summary'>"
+              "%d file%s changed</td></tr>\n", files, files > 1 ? "s" : "");
+        html("</table>");
         cgit_free_commitinfo(info);
 }