/* scan-tree.c
 *
 * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "scan-tree.h"
#include "configfile.h"
#include "html.h"
#include <config.h>

/* return 1 if path contains a objects/ directory and a HEAD file */
static int is_git_dir(const char *path)
{
	struct stat st;
	struct strbuf pathbuf = STRBUF_INIT;
	int result = 0;

	strbuf_addf(&pathbuf, "%s/objects", path);
	if (stat(pathbuf.buf, &st)) {
		if (errno != ENOENT)
			fprintf(stderr, "Error checking path %s: %s (%d)\n",
				path, strerror(errno), errno);
		goto out;
	}
	if (!S_ISDIR(st.st_mode))
		goto out;

	strbuf_reset(&pathbuf);
	strbuf_addf(&pathbuf, "%s/HEAD", path);
	if (stat(pathbuf.buf, &st)) {
		if (errno != ENOENT)
			fprintf(stderr, "Error checking path %s: %s (%d)\n",
				path, strerror(errno), errno);
		goto out;
	}
	if (!S_ISREG(st.st_mode))
		goto out;

	result = 1;
out:
	strbuf_release(&pathbuf);
	return result;
}

static struct cgit_repo *repo;
static repo_config_fn config_fn;

static void scan_tree_repo_config(const char *name, const char *value)
{
	config_fn(repo, name, value);
}

static int gitconfig_config(const char *key, const char *value, void *cb)
{
	const char *name;

	if (!strcmp(key, "gitweb.owner"))
		config_fn(repo, "owner", value);
	else if (!strcmp(key, "gitweb.description"))
		config_fn(repo, "desc", value);
	else if (!strcmp(key, "gitweb.category"))
		config_fn(repo, "section", value);
	else if (!strcmp(key, "gitweb.homepage"))
		config_fn(repo, "homepage", value);
	else if (skip_prefix(key, "cgit.", &name))
		config_fn(repo, name, value);

	return 0;
}

static char *xstrrchr(char *s, char *from, int c)
{
	while (from >= s && *from != c)
		from--;
	return from < s ? NULL : from;
}

static void add_repo(const char *base, struct strbuf *path, repo_config_fn fn)
{
	struct stat st;
	struct passwd *pwd;
	size_t pathlen;
	struct strbuf rel = STRBUF_INIT;
	char *p, *slash;
	int n;
	size_t size;

	if (stat(path->buf, &st)) {
		fprintf(stderr, "Error accessing %s: %s (%d)\n",
			path->buf, strerror(errno), errno);
		return;
	}

	strbuf_addch(path, '/');
	pathlen = path->len;

	if (ctx.cfg.strict_export) {
		strbuf_addstr(path, ctx.cfg.strict_export);
		if(stat(path->buf, &st))
			return;
		strbuf_setlen(path, pathlen);
	}

	strbuf_addstr(path, "noweb");
	if (!stat(path->buf, &st))
		return;
	strbuf_setlen(path, pathlen);

	if (!starts_with(path->buf, base))
		strbuf_addbuf(&rel, path);
	else
		strbuf_addstr(&rel, path->buf + strlen(base) + 1);

	if (!strcmp(rel.buf + rel.len - 5, "/.git"))
		strbuf_setlen(&rel, rel.len - 5);
	else if (rel.len && rel.buf[rel.len - 1] == '/')
		strbuf_setlen(&rel, rel.len - 1);

	repo = cgit_add_repo(rel.buf);
	config_fn = fn;
	if (ctx.cfg.enable_git_config) {
		strbuf_addstr(path, "config");
		git_config_from_file(gitconfig_config, path->buf, NULL);
		strbuf_setlen(path, pathlen);
	}

	if (ctx.cfg.remove_su<style>pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
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.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
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