/* ui-diff.c: show diff between two blobs * * Copyright (C) 2006 Lars Hjemli * * Licensed under GNU General Public License v2 * (see COPYING for full license text) */ #include "cgit.h" #include "html.h" #include "ui-shared.h" unsigned char old_rev_sha1[20]; unsigned char new_rev_sha1[20]; static int files, slots; static int total_adds, total_rems, max_changes; static int lines_added, lines_removed; static char *curr_rev; static struct fileinfo { char status; unsigned char old_sha1[20]; unsigned char new_sha1[20]; unsigned short old_mode; unsigned short new_mode; char *old_path; char *new_path; unsigned int added; unsigned int removed; } *items; static void print_fileinfo(struct fileinfo *info) { char *class; switch (info->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", info->status); } html(""); htmlf(""); if (is_null_sha1(info->new_sha1)) { cgit_print_filemode(info->old_mode); } else { cgit_print_filemode(info->new_mode); } if (info->old_mode != info->new_mode && !is_null_sha1(info->old_sha1) && !is_null_sha1(info->new_sha1)) { html("["); cgit_print_filemode(info->old_mode); html("]"); } htmlf("", class); cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, curr_rev, NULL, info->new_path); if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) htmlf(" (%s from %s)", info->status == DIFF_STATUS_COPIED ? "copied" : "renamed", info->old_path); html(""); htmlf("%d", info->added + info->removed); html(""); htmlf("", (max_changes > 100 ? 100 : max_changes)); htmlf("
", info->added * 100.0 / max_changes); htmlf("", info->removed * 100.0 / max_changes); htmlf("", (max_changes - info->removed - info->added) * 100.0 / max_changes); html("
\n"); } static void count_diff_lines(char *line, int len) { if (line && (len > 0)) { if (line[0] == '+') lines_added++; else if (line[0] == '-') lines_removed++; } } static void inspect_filepair(struct diff_filepair *pair) { files++; lines_added = 0; lines_removed = 0; cgit_diff_files(pair->one->sha1, pair->two->sha1, count_diff_lines); if (files >= slots) { if (slots == 0) slots = 4; else slots = slots * 2; items = xrealloc(items, slots * sizeof(struct fileinfo)); } items[files-1].status = pair->status; hashcpy(items[files-1].old_sha1, pair->one->sha1); hashcpy(items[files-1].new_sha1, pair->two->sha1); items[files-1].old_mode = pair->one->mode; items[files-1].new_mode = pair->two->mode; items[files-1].old_path = xstrdup(pair->one->path); items[files-1].new_path = xstrdup(pair->two->path); items[files-1].added = lines_added; items[files-1].removed = lines_removed; if (lines_added + lines_removed > max_changes) max_changes = lines_added + lines_removed; total_adds += lines_added; total_rems += lines_removed; } void cgit_print_diffstat(const unsigned char *old_sha1, const unsigned char *new_sha1) { int i; html("
Diffstat
"); html(""); max_changes = 0; cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, NULL); for(i = 0; i"); html("
"); htmlf("%d files changed, %d insertions, %d deletions", files, total_adds, total_rems); html("
"); } /* * print a single line returned from xdiff */ static void print_line(char *line, int len) { char *class = "ctx"; char c = line[len-1]; if (line[0] == '+') class = "add"; else if (line[0] == '-') class = "del"; else if (line[0] == '@') class = "hunk"; htmlf("
", class); line[len-1] = '\0'; html_txt(line); html("
"); line[len-1] = c; } static void header(unsigned char *sha1, char *path1, int mode1, unsigned char *sha2, char *path2, int mode2) { char *abbrev1, *abbrev2; int subproject; subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2)); html("
"); html("diff --git a/"); html_txt(path1); html(" b/"); html_txt(path2); if (is_null_sha1(sha1)) path1 = "dev/null"; if (is_null_sha1(sha2)) path2 = "dev/null"; if (mode1 == 0) htmlf("
new file mode %.6o", mode2); if (mode2 == 0) htmlf("
deleted file mode %.6o", mode1); if (!subproject) { abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV)); abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV)); htmlf("
index %s..%s", abbrev1, abbrev2); free(abbrev1); free(abbrev2); if (mode1 != 0 && mode2 != 0) { htmlf(" %.6o", mode1); if (mode2 != mode1) htmlf("..%.6o", mode2); } html("
--- a/"); if (mode1 != 0) cgit_tree_link(path1, NULL, NULL, ctx.qry.head, sha1_to_hex(old_rev_sha1), path1); else html_txt(path1); html("
+++ b/"); if (mode2 != 0) cgit_tree_link(path2, NULL, NULL, ctx.qry.head, sha1_to_hex(new_rev_sha1), path2); else html_txt(path2); } html("
"); } static void filepair_cb(struct diff_filepair *pair) { header(pair->one->sha1, pair->one->path, pair->one->mode, pair->two->sha1, pair->two->path, pair->two->mode); if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) { if (S_ISGITLINK(pair->one->mode)) print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52); if (S_ISGITLINK(pair->two->mode)) print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52); return; } if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line)) cgit_print_error("Error running diff"); } void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix) { enum object_type type; unsigned long size; struct commit *commit, *commit2; if (!new_rev) new_rev = ctx.qry.head; get_sha1(new_rev, new_rev_sha1); type = sha1_object_info(new_rev_sha1, &size); if (type == OBJ_BAD) { cgit_print_error(fmt("Bad object name: %s", new_rev)); return; } commit = lookup_commit_reference(new_rev_sha1); if (!commit || parse_commit(commit)) cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1))); if (old_rev) get_sha1(old_rev, old_rev_sha1); else if (commit->parents && commit->parents->item) hashcpy(old_rev_sha1, commit->parents->item->object.sha1); else hashclr(old_rev_sha1); if (!is_null_sha1(old_rev_sha1)) { type = sha1_object_info(old_rev_sha1, &size); if (type == OBJ_BAD) { cgit_print_error(fmt("Bad object name: %s", sha1_to_hex(old_rev_sha1))); return; } commit2 = lookup_commit_reference(old_rev_sha1); if (!commit2 || parse_commit(commit2)) cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1))); } cgit_print_diffstat(old_rev_sha1, new_rev_sha1); html("
"); html(""); html("
"); cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix); html("
"); }