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ddfaef6bb2
This prints the diffstat but stops before printing (or generating) any of the body of the diff. No cgitrc option is added here so that we can wait to see how useful this is before letting people set it as the default. Suggested-by: Konstantin Ryabitsev <mricon@kernel.org> Signed-off-by: John Keeping <john@keeping.me.uk>
448 lines
11 KiB
C
448 lines
11 KiB
C
/* ui-diff.c: show diff between two blobs
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*
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* Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
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*
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* Licensed under GNU General Public License v2
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* (see COPYING for full license text)
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*/
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#include "cgit.h"
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#include "ui-diff.h"
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#include "html.h"
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#include "ui-shared.h"
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#include "ui-ssdiff.h"
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unsigned char old_rev_sha1[20];
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unsigned char new_rev_sha1[20];
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static int files, slots;
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static int total_adds, total_rems, max_changes;
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static int lines_added, lines_removed;
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static struct fileinfo {
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char status;
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unsigned char old_sha1[20];
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unsigned char new_sha1[20];
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unsigned short old_mode;
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unsigned short new_mode;
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char *old_path;
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char *new_path;
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unsigned int added;
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unsigned int removed;
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unsigned long old_size;
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unsigned long new_size;
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int binary:1;
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} *items;
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static int use_ssdiff = 0;
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static struct diff_filepair *current_filepair;
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struct diff_filespec *cgit_get_current_old_file(void)
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{
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return current_filepair->one;
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}
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struct diff_filespec *cgit_get_current_new_file(void)
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{
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return current_filepair->two;
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}
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static void print_fileinfo(struct fileinfo *info)
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{
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char *class;
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switch (info->status) {
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case DIFF_STATUS_ADDED:
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class = "add";
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break;
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case DIFF_STATUS_COPIED:
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class = "cpy";
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break;
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case DIFF_STATUS_DELETED:
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class = "del";
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break;
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case DIFF_STATUS_MODIFIED:
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class = "upd";
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break;
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case DIFF_STATUS_RENAMED:
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class = "mov";
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break;
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case DIFF_STATUS_TYPE_CHANGED:
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class = "typ";
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break;
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case DIFF_STATUS_UNKNOWN:
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class = "unk";
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break;
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case DIFF_STATUS_UNMERGED:
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class = "stg";
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break;
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default:
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die("bug: unhandled diff status %c", info->status);
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}
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html("<tr>");
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htmlf("<td class='mode'>");
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if (is_null_sha1(info->new_sha1)) {
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cgit_print_filemode(info->old_mode);
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} else {
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cgit_print_filemode(info->new_mode);
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}
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if (info->old_mode != info->new_mode &&
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!is_null_sha1(info->old_sha1) &&
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!is_null_sha1(info->new_sha1)) {
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html("<span class='modechange'>[");
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cgit_print_filemode(info->old_mode);
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html("]</span>");
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}
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htmlf("</td><td class='%s'>", class);
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cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
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ctx.qry.sha2, info->new_path);
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if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) {
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htmlf(" (%s from ",
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info->status == DIFF_STATUS_COPIED ? "copied" : "renamed");
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html_txt(info->old_path);
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html(")");
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}
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html("</td><td class='right'>");
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if (info->binary) {
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htmlf("bin</td><td class='graph'>%ld -> %ld bytes",
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info->old_size, info->new_size);
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return;
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}
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htmlf("%d", info->added + info->removed);
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html("</td><td class='graph'>");
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htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
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htmlf("<td class='add' style='width: %.1f%%;'/>",
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info->added * 100.0 / max_changes);
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htmlf("<td class='rem' style='width: %.1f%%;'/>",
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info->removed * 100.0 / max_changes);
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htmlf("<td class='none' style='width: %.1f%%;'/>",
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(max_changes - info->removed - info->added) * 100.0 / max_changes);
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html("</tr></table></td></tr>\n");
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}
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static void count_diff_lines(char *line, int len)
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{
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if (line && (len > 0)) {
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if (line[0] == '+')
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lines_added++;
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else if (line[0] == '-')
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lines_removed++;
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}
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}
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static void inspect_filepair(struct diff_filepair *pair)
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{
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int binary = 0;
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unsigned long old_size = 0;
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unsigned long new_size = 0;
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files++;
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lines_added = 0;
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lines_removed = 0;
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cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
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&binary, 0, ctx.qry.ignorews, count_diff_lines);
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if (files >= slots) {
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if (slots == 0)
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slots = 4;
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else
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slots = slots * 2;
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items = xrealloc(items, slots * sizeof(struct fileinfo));
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}
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items[files-1].status = pair->status;
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hashcpy(items[files-1].old_sha1, pair->one->sha1);
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hashcpy(items[files-1].new_sha1, pair->two->sha1);
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items[files-1].old_mode = pair->one->mode;
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items[files-1].new_mode = pair->two->mode;
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items[files-1].old_path = xstrdup(pair->one->path);
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items[files-1].new_path = xstrdup(pair->two->path);
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items[files-1].added = lines_added;
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items[files-1].removed = lines_removed;
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items[files-1].old_size = old_size;
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items[files-1].new_size = new_size;
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items[files-1].binary = binary;
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if (lines_added + lines_removed > max_changes)
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max_changes = lines_added + lines_removed;
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total_adds += lines_added;
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total_rems += lines_removed;
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}
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static void cgit_print_diffstat(const unsigned char *old_sha1,
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const unsigned char *new_sha1,
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const char *prefix)
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{
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int i;
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html("<div class='diffstat-header'>");
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cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
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ctx.qry.sha2, NULL);
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if (prefix) {
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html(" (limited to '");
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html_txt(prefix);
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html("')");
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}
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html("</div>");
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html("<table summary='diffstat' class='diffstat'>");
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max_changes = 0;
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cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, prefix,
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ctx.qry.ignorews);
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for (i = 0; i<files; i++)
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print_fileinfo(&items[i]);
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html("</table>");
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html("<div class='diffstat-summary'>");
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htmlf("%d files changed, %d insertions, %d deletions",
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files, total_adds, total_rems);
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html("</div>");
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}
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/*
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* print a single line returned from xdiff
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*/
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static void print_line(char *line, int len)
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{
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char *class = "ctx";
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char c = line[len-1];
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if (line[0] == '+')
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class = "add";
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else if (line[0] == '-')
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class = "del";
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else if (line[0] == '@')
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class = "hunk";
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htmlf("<div class='%s'>", class);
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line[len-1] = '\0';
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html_txt(line);
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html("</div>");
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line[len-1] = c;
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}
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static void header(unsigned char *sha1, char *path1, int mode1,
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unsigned char *sha2, char *path2, int mode2)
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{
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char *abbrev1, *abbrev2;
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int subproject;
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subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
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html("<div class='head'>");
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html("diff --git a/");
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html_txt(path1);
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html(" b/");
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html_txt(path2);
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if (mode1 == 0)
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htmlf("<br/>new file mode %.6o", mode2);
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if (mode2 == 0)
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htmlf("<br/>deleted file mode %.6o", mode1);
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if (!subproject) {
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abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
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abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
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htmlf("<br/>index %s..%s", abbrev1, abbrev2);
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free(abbrev1);
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free(abbrev2);
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if (mode1 != 0 && mode2 != 0) {
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htmlf(" %.6o", mode1);
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if (mode2 != mode1)
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htmlf("..%.6o", mode2);
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}
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if (is_null_sha1(sha1)) {
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path1 = "dev/null";
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html("<br/>--- /");
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} else
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html("<br/>--- a/");
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if (mode1 != 0)
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cgit_tree_link(path1, NULL, NULL, ctx.qry.head,
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sha1_to_hex(old_rev_sha1), path1);
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else
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html_txt(path1);
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if (is_null_sha1(sha2)) {
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path2 = "dev/null";
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html("<br/>+++ /");
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} else
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html("<br/>+++ b/");
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if (mode2 != 0)
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cgit_tree_link(path2, NULL, NULL, ctx.qry.head,
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sha1_to_hex(new_rev_sha1), path2);
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else
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html_txt(path2);
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}
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html("</div>");
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}
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static void filepair_cb(struct diff_filepair *pair)
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{
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unsigned long old_size = 0;
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unsigned long new_size = 0;
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int binary = 0;
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linediff_fn print_line_fn = print_line;
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current_filepair = pair;
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if (use_ssdiff) {
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cgit_ssdiff_header_begin();
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print_line_fn = cgit_ssdiff_line_cb;
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}
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header(pair->one->sha1, pair->one->path, pair->one->mode,
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pair->two->sha1, pair->two->path, pair->two->mode);
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if (use_ssdiff)
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cgit_ssdiff_header_end();
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if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
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if (S_ISGITLINK(pair->one->mode))
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print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
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if (S_ISGITLINK(pair->two->mode))
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print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
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if (use_ssdiff)
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cgit_ssdiff_footer();
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return;
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}
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if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
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&new_size, &binary, ctx.qry.context,
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ctx.qry.ignorews, print_line_fn))
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cgit_print_error("Error running diff");
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if (binary) {
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if (use_ssdiff)
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html("<tr><td colspan='4'>Binary files differ</td></tr>");
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else
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html("Binary files differ");
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}
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if (use_ssdiff)
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cgit_ssdiff_footer();
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}
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void cgit_print_diff_ctrls()
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{
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int i, curr;
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html("<div class='cgit-panel'>");
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html("<b>diff options</b>");
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html("<form method='get' action='.'>");
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cgit_add_hidden_formfields(1, 0, ctx.qry.page);
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html("<table>");
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html("<tr><td colspan='2'/></tr>");
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html("<tr>");
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html("<td class='label'>context:</td>");
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html("<td class='ctrl'>");
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html("<select name='context' onchange='this.form.submit();'>");
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curr = ctx.qry.context;
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if (!curr)
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curr = 3;
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for (i = 1; i <= 10; i++)
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html_intoption(i, fmt("%d", i), curr);
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for (i = 15; i <= 40; i += 5)
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html_intoption(i, fmt("%d", i), curr);
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html("</select>");
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html("</td>");
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html("</tr><tr>");
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html("<td class='label'>space:</td>");
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html("<td class='ctrl'>");
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html("<select name='ignorews' onchange='this.form.submit();'>");
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html_intoption(0, "include", ctx.qry.ignorews);
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html_intoption(1, "ignore", ctx.qry.ignorews);
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html("</select>");
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html("</td>");
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html("</tr><tr>");
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html("<td class='label'>mode:</td>");
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html("<td class='ctrl'>");
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html("<select name='dt' onchange='this.form.submit();'>");
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curr = ctx.qry.has_difftype ? ctx.qry.difftype : ctx.cfg.difftype;
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html_intoption(0, "unified", curr);
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html_intoption(1, "ssdiff", curr);
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html_intoption(2, "stat only", curr);
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html("</select></td></tr>");
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html("<tr><td/><td class='ctrl'>");
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html("<noscript><input type='submit' value='reload'/></noscript>");
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html("</td></tr></table>");
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html("</form>");
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html("</div>");
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}
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void cgit_print_diff(const char *new_rev, const char *old_rev,
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const char *prefix, int show_ctrls, int raw)
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{
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struct commit *commit, *commit2;
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const unsigned char *old_tree_sha1, *new_tree_sha1;
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diff_type difftype;
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if (!new_rev)
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new_rev = ctx.qry.head;
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if (get_sha1(new_rev, new_rev_sha1)) {
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cgit_print_error("Bad object name: %s", new_rev);
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return;
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}
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commit = lookup_commit_reference(new_rev_sha1);
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if (!commit || parse_commit(commit)) {
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cgit_print_error("Bad commit: %s", sha1_to_hex(new_rev_sha1));
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return;
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}
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new_tree_sha1 = commit->tree->object.sha1;
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if (old_rev) {
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if (get_sha1(old_rev, old_rev_sha1)) {
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cgit_print_error("Bad object name: %s", old_rev);
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return;
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}
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} else if (commit->parents && commit->parents->item) {
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hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
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} else {
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hashclr(old_rev_sha1);
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}
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if (!is_null_sha1(old_rev_sha1)) {
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commit2 = lookup_commit_reference(old_rev_sha1);
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if (!commit2 || parse_commit(commit2)) {
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cgit_print_error("Bad commit: %s", sha1_to_hex(old_rev_sha1));
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return;
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}
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old_tree_sha1 = commit2->tree->object.sha1;
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} else {
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old_tree_sha1 = NULL;
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}
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if (raw) {
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struct diff_options diffopt;
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diff_setup(&diffopt);
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diffopt.output_format = DIFF_FORMAT_PATCH;
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DIFF_OPT_SET(&diffopt, RECURSIVE);
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diff_setup_done(&diffopt);
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ctx.page.mimetype = "text/plain";
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cgit_print_http_headers();
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if (old_tree_sha1) {
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diff_tree_sha1(old_tree_sha1, new_tree_sha1, "",
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&diffopt);
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} else {
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diff_root_tree_sha1(new_tree_sha1, "", &diffopt);
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}
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diffcore_std(&diffopt);
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diff_flush(&diffopt);
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return;
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}
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difftype = ctx.qry.has_difftype ? ctx.qry.difftype : ctx.cfg.difftype;
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use_ssdiff = difftype == DIFF_SSDIFF;
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if (show_ctrls)
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cgit_print_diff_ctrls();
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cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);
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if (difftype == DIFF_STATONLY)
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return;
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if (use_ssdiff) {
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html("<table summary='ssdiff' class='ssdiff'>");
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} else {
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html("<table summary='diff' class='diff'>");
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html("<tr><td>");
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}
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cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix,
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ctx.qry.ignorews);
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if (!use_ssdiff)
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html("</td></tr>");
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html("</table>");
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}
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