/* 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" unsigned char old_rev_sha1[20]; unsigned char new_rev_sha1[20]; /* * 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("<div class='%s'>", class); line[len-1] = '\0'; html_txt(line); html("</div>"); 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("<div class='head'>"); 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("<br/>new file mode %.6o", mode2); if (mode2 == 0) htmlf("<br/>deleted file mode %.6o", mode1); if (!subproject) { abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV)); abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV)); htmlf("<br/>index %s..%s", abbrev1, abbrev2); free(abbrev1); free(abbrev2); if (mode1 != 0 && mode2 != 0) { htmlf(" %.6o", mode1); if (mode2 != mode1) htmlf("..%.6o", mode2); } html("<br/>--- a/"); if (mode1 != 0) cgit_tree_link(path1, NULL, NULL, cgit_query_head, sha1_to_hex(old_rev_sha1), path1); else html_txt(path1); html("<br/>+++ b/"); if (mode2 != 0) cgit_tree_link(path2, NULL, NULL, cgit_query_head, sha1_to_hex(new_rev_sha1), path2); else html_txt(path2); } html("</div>"); } 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 = cgit_query_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; } if (type != OBJ_COMMIT) { cgit_print_error(fmt("Unhandled object type: %s", typename(type))); 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))); } html("<table summary='diff' class='diff'>"); html("<tr><td>"); cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix); html("</td></tr>"); html("</table>"); }