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	Web front-end for git that you're looking at right now. Might have had a few additions from upstream.

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	Commit message (Collapse)	Author	Age
*	tests/.gitignore: update for using Git's test infrastructure	John Keeping	2013-04-08
| | | |	Signed-off-by: John Keeping <john@keeping.me.uk>
*	Makefile: re-use Git's Makefile where possible	John Keeping	2013-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | |	Git does quite a lot of platform-specific detection in its Makefile, which can result in it defining preprocessor variables that are used in its header files. If CGit does not define the same variables it can result in different sizes of some structures in different places in the same application. For example, on Solaris Git uses it's "compat" regex library which has a different sized regex_t structure than that available in the platform regex.h. This has a knock-on effect on the size of "struct rev_info" and leads to hard to diagnose runtime issues. In order to avoid all of this, introduce a "cgit.mk" file that includes Git's Makefile and make all of the existing logic apply to CGit's objects as well. This is slightly complicated because Git's Makefile must run in Git's directory, so all references to CGit files need to be prefixed with "../". In addition, OBJECTS is a simply expanded variable in Git's Makefile so we cannot just add our objects to it. Instead we must copy the two applicable rules into "cgit.mk". This has the advantage that we can split CGit-specific CFLAGS from Git's CFLAGS and hence avoid rebuilding all of Git whenever a CGit-specific value changes. Signed-off-by: John Keeping <john@keeping.me.uk> Acked-by: Jamie Couture <jamie.couture@gmail.com>
*	Fix doc-related glitches in Makefile and .gitignore	Lars Hjemli	2009-03-15
| | | |	Signed-off-by: Lars Hjemli <hjemli@gmail.com>
*	Makefile: autobuild dependency rules	Lars Hjemli	2008-03-24
| | | | | | | | | | | | | | | |	This uses gcc to generate dependency rules for each `.o` file, based on the corresponding `.c` file, into a new set of `.d` files (which are also defined to depend on the same set of source files as their `.o` files). Result: * all objectfile dependencies are correctly calculated * only the necessary dependencies are recalculated when a sourcefile is updated Inspiration for the build rules: * http://www.gnu.org/software/make/manual/make.html#Automatic-Prerequisites * http://make.paulandlesley.org/autodep.html Signed-off-by: Lars Hjemli <hjemli@gmail.com>
*	Add cgit.conf to .gitignore, remove *~	Lars Hjemli	2007-09-20
| | | | | | |	Not having cgit.conf in .gitignore is a bug, while having *~ is a personal preference. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
*	Add version info from git-describe	Lars Hjemli	2007-06-18
| | | | | | | |	A new script, gen-version.sh, is now invoked from 'make version' to generate the file VERSION. This file contains a version identifier generated by git-describe and is included in the Makefile. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
*	Add caching infrastructure	Lars Hjemli	2006-12-10
| | | | | | | | | | | | | | | | | | | | | |	This enables internal caching of page output. Page requests are split into four groups: 1) repo listing (front page) 2) repo summary 3) repo pages w/symbolic references in query string 4) repo pages w/constant sha1's in query string Each group has a TTL specified in minutes. When a page is requested, a cached filename is stat(2)'ed and st_mtime is compared to time(2). If TTL has expired (or the file didn't exist), the cached file is regenerated. When generating a cached file, locking is used to avoid parallell processing of the request. If multiple processes tries to aquire the same lock, the ones who fail to get the lock serves the (expired) cached file. If the cached file don't exist, the process instead calls sched_yield(2) before restarting the request processing. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
*	Add .gitignore	Lars Hjemli	2006-12-09
	Signed-off-by: Lars Hjemli <hjemli@gmail.com>

generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-01-13 05:09:58 +0000

/* 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"
#include "ui-ssdiff.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 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;
	unsigned long old_size;
	unsigned long new_size;
	int binary:1;
} *items;

static int use_ssdiff = 0;

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("<tr>");
	htmlf("<td class='mode'>");
	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("<span class='modechange'>[");
		cgit_print_filemode(info->old_mode);
		html("]</span>");
	}
	htmlf("</td><td class='%s'>", class);
	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
		       ctx.qry.sha2, info->new_path, 0);
	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("</td><td class='right'>");
	if (info->binary) {
		htmlf("bin</td><td class='graph'>%d -> %d bytes",
		      info->old_size, info->new_size);
		return;
	}
	htmlf("%d", info->added + info->removed);
	html("</td><td class='graph'>");
	htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
	htmlf("<td class='add' style='width: %.1f%%;'/>",
	      info->added * 100.0 / max_changes);
	htmlf("<td class='rem' style='width: %.1f%%;'/>",
	      info->removed * 100.0 / max_changes);
	htmlf("<td class='none' style='width: %.1f%%;'/>",
	      (max_changes - info->removed - info->added) * 100.0 / max_changes);
	html("</tr></table></td></tr>\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)
{
	int binary = 0;
	unsigned long old_size = 0;
	unsigned long new_size = 0;
	files++;
	lines_added = 0;
	lines_removed = 0;
	cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
			&binary, 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;
	items[files-1].old_size = old_size;
	items[files-1].new_size = new_size;
	items[files-1].binary = binary;
	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, const char *prefix)
{
	int i;

	html("<div class='diffstat-header'>");
	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
		       ctx.qry.sha2, NULL, 0);
	if (prefix)
		htmlf(" (limited to '%s')", prefix);
	html("</div>");
	html("<table summary='diffstat' class='diffstat'>");
	max_changes = 0;
	cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, prefix);
	for(i = 0; i<files; i++)
		print_fileinfo(&items[i]);
	html("</table>");
	html("<div class='diffstat-summary'>");
	htmlf("%d files changed, %d insertions, %d deletions",
	      files, total_adds, total_rems);
	html("</div>");
}


/*
 * 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, ctx.qry.head,
				       sha1_to_hex(old_rev_sha1), path1);
		else
			html_txt(path1);
		html("<br/>+++ 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("</div>");
}

static void print_ssdiff_link()
{
	if (!strcmp(ctx.qry.page, "diff")) {
		if (use_ssdiff)
			cgit_diff_link("Unidiff", NULL, NULL, ctx.qry.head,
				       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1);
		else
			cgit_diff_link("Side-by-side diff", NULL, NULL,
				       ctx.qry.head, ctx.qry.sha1,
				       ctx.qry.sha2, ctx.qry.path, 1);
	}
}

static void filepair_cb(struct diff_filepair *pair)
{
	unsigned long old_size = 0;
	unsigned long new_size = 0;
	int binary = 0;
	linediff_fn print_line_fn = print_line;

	if (use_ssdiff) {
		cgit_ssdiff_header_begin();
		print_line_fn = cgit_ssdiff_line_cb;
	}
	header(pair->one->sha1, pair->one->path, pair->one->mode,
	       pair->two->sha1, pair->two->path, pair->two->mode);
	if (use_ssdiff)
		cgit_ssdiff_header_end();
	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
		if (S_ISGITLINK(pair->one->mode))
			print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
		if (S_ISGITLINK(pair->two->mode))
			print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
		if (use_ssdiff)
			cgit_ssdiff_footer();
		return;
	}
	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
			    &new_size, &binary, print_line_fn))
		cgit_print_error("Error running diff");
	if (binary) {
		if (use_ssdiff)
			html("<tr><td colspan='4'>Binary files differ</td></tr>");
		else
			html("Binary files differ");
	}
	if (use_ssdiff)
		cgit_ssdiff_footer();
}

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)));
	}

	if ((ctx.qry.ssdiff && !ctx.cfg.ssdiff) || (!ctx.qry.ssdiff && ctx.cfg.ssdiff))
		use_ssdiff = 1;

	print_ssdiff_link();
	cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);

	if (use_ssdiff) {
		html("<table summary='ssdiff' class='ssdiff'>");
	} else {
		html("<table summary='diff' class='diff'>");
		html("<tr><td>");
	}
	cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix);
	if (!use_ssdiff)
		html("</td></tr>");
	html("</table>");
}