/* ui-shared.c: common web output functions
 *
 * Copyright (C) 2006 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "cmd.h"
#include "html.h"

const char cgit_doctype[] =
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
"  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";

static char *http_date(time_t t)
{
	static char day[][4] =
		{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
	static char month[][4] =
		{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
		 "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
	struct tm *tm = gmtime(&t);
	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
		   tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
		   tm->tm_hour, tm->tm_min, tm->tm_sec);
}

void cgit_print_error(char *msg)
{
	html("<div class='error'>");
	html_txt(msg);
	html("</div>\n");
}

char *cgit_httpscheme()
{
	if (ctx.env.https && !strcmp(ctx.env.https, "on"))
		return "https://";
	else
		return "http://";
}

char *cgit_hosturl()
{
	if (ctx.env.http_host)
		return ctx.env.http_host;
	if (!ctx.env.server_name)
		return NULL;
	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
		return ctx.env.server_name;
	return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
}

char *cgit_rooturl()
{
	if (ctx.cfg.virtual_root)
		return fmt("%s/", ctx.cfg.virtual_root);
	else
		return ctx.cfg.script_name;
}

char *cgit_repourl(const char *reponame)
{
	if (ctx.cfg.virtual_root) {
		return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
	} else {
		return fmt("?r=%s", reponame);
	}
}

char *cgit_fileurl(const char *reponame, const char *pagename,
		   const char *filename, const char *query)
{
	char *tmp;
	char *delim;

	if (ctx.cfg.virtual_root) {
		tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
			  pagename, (filename ? filename:""));
		delim = "?";
	} else {
		tmp = fmt("?url=%s/%s/%s", reponame, pagename,
			  (filename ? filename : ""));
		delim = "&";
	}
	if (query)
		tmp = fmt("%s%s%s", tmp, delim, query);
	return tmp;
}

char *cgit_pageurl(const char *reponame, const char *pagename,
		   const char *query)
{
	return cgit_fileurl(reponame,pagename,0,query);
}

const char *cgit_repobasename(const char *reponame)
{
	/* I assume we don't need to store more than one repo basename */
	static char rvbuf[1024];
	int p;
	const char *rv;
	strncpy(rvbuf,reponame,sizeof(rvbuf));
	if(rvbuf[sizeof(rvbuf)-1])
		die("cgit_repobasename: truncated repository name '%s'", reponame);
	p = strlen(rvbuf)-1;
	/* strip trailing slashes */
	while(p && rvbuf[p]=='/') rvbuf[p--]=0;
	/* strip trailing .git */
	if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
		p -= 3; rvbuf[p--] = 0;
	}
	/* strip more trailing slashes if any */
	while( p && rvbuf[p]=='/') rvbuf[p--]=0;
	/* find last slash in the remaining string */
	rv = strrchr(rvbuf,'/');
	if(rv)
		return ++rv;
	return rvbuf;
}

char *cgit_currurl()
{
	if (!ctx.cfg.virtual_root)
		return ctx.cfg.script_name;
	else if (ctx.qry.page)
		return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
	else if (ctx.qry.repo)
		return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
	else
		return fmt("%s/", ctx.cfg.virtual_root);
}

static void site_url(char *page, char *search, int ofs)
{
	char *delim = "?";

	if (ctx.cfg.virtual_root) {
		html_attr(ctx.cfg.virtual_root);
		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
			html("/");
	} else
		html(ctx.cfg.script_name);

	if (page) {
		htmlf("?p=%s", page);
		delim = "&";
	}
	if (search) {
		html(delim);
		html("q=");
		html_attr(search);
		delim = "&";
	}
	if (ofs) {
		html(delim);
		htmlf("ofs=%d", ofs);
	}
}

static void site_link(char *page, char *name, char *title, char *class,
		      char *search, int ofs)
{
	html("<a");
	if (title) {
		html(" title='");
		html_attr(title);
		html("'");
	}
	if (class) {
		html(" class='");
		html_attr(class);
		html("'");
	}
	html(" href='");
	site_url(page, search, ofs);
	html("'>");
	html_txt(name);
	html("</a>");
}

void cgit_index_link(char *name, char *title, char *class, char *pattern,
		     int ofs)
{
	site_link(NULL, name, title, class, pattern, ofs);
}

static char *repolink(char *title, char *class, char *page, char *head,
		      char *path)
{
	char *delim = "?";

	html("<a");
	if (title) {
		html(" title='");
		html_attr(title);
		html("'");
	}
	if (class) {
		html(" class='");
		html_attr(class);
		html("'");
	}
	html(" href='");
	if (ctx.cfg.virtual_root) {
		html_url_path(ctx.cfg.virtual_root);
		if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
			html("/");
		html_url_path(ctx.repo->url);
		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
			html("/");
		if (page) {
			html_url_path(page);
			html("/");
			if (path)
				html_url_path(path);
		}
	} else {
		html(ctx.cfg.script_name);
		html("?url=");
		html_url_arg(ctx.repo->url);
		if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
			html("/");
		if (page) {
			html_url_arg(page);
			html("/");
			if (path)
				html_url_arg(path);
		}
		delim = "&amp;";
	}
	if (head && strcmp(head, ctx.repo->defbranch)) {
		html(delim);
		html("h=");
		html_url_arg(head);
		delim = "&amp;";
	}
	return fmt("%s", delim);
}

static void reporevlink(char *page, char *name, char *title, char *class,
			char *head, char *rev, char *path)
{
	char *delim;

	delim = repolink(title, class, page, head, path);<style>pre { line-height: 125%; }
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */</style><div class="highlight"><pre><span></span><span class="cm">/* configfile.c: parsing of config files</span>
<span class="cm"> *</span>
<span class="cm"> * Copyright (C) 2008 Lars Hjemli</span>
<span class="cm"> *</span>
<span class="cm"> * Licensed under GNU General Public License v2</span>
<span class="cm"> *   (see COPYING for full license text)</span>
<span class="cm"> */</span>

<span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;ctype.h&gt;</span>
<span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;stdio.h&gt;</span>
<span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;configfile.h&quot;</span>

<span class="kt">int</span><span class="w"> </span><span class="nf">next_char</span><span class="p">(</span><span class="kt">FILE</span><span class="w"> </span><span class="o">*</span><span class="n">f</span><span class="p">)</span>
<span class="p">{</span>
<span class="w">	</span><span class="kt">int</span><span class="w"> </span><span class="n">c</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">fgetc</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="w">	</span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">c</span><span class="o">==</span><span class="sc">&#39;\r&#39;</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w">		</span><span class="n">c</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">fgetc</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="w">		</span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">c</span><span class="o">!=</span><span class="sc">&#39;\n&#39;</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w">			</span><span class="n">ungetc</span><span class="p">(</span><span class="n">c</span><span class="p">,</span><span class="w"> </span><span class="n">f</span><span class="p">);</span>
<span class="w">			</span><span class="n">c</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="sc">&#39;\r&#39;</span><span class="p">;</span>
<span class="w">		</span><span class="p">}</span>
<span class="w">	</span><span class="p">}</span>
<span class="w">	</span><span class="k">return</span><span class="w"> </span><span class="n">c</span><span class="p">;</span>
<span class="p">}</span>

<span class="kt">void</span><span class="w"> </span><span class="nf">skip_line</span><span class="p">(</span><span class="kt">FILE</span><span class="w"> </span><span class="o">*</span><span class="n">f</span><span class="p">)</span>
<span class="p">{</span>
<span class="w">	</span><span class="kt">int</span><span class="w"> </span><span class="n">c</span><span class="p">;</span>

<span class="w">	</span><span class="k">while</span><span class="p">((</span><span class="n">c</span><span class="o">=</span><span class="n">next_char</span><span class="p">(</span><span class="n">f</span><span class="p">))</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">c</span><span class="o">!=</span><span class="sc">&#39;\n&#39;</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">c</span><span class="o">!=</span><span class="n">EOF</span><span class="p">)</span>
<span class="w">		</span><span class="p">;</span>
<span class="p">}</span>

<span class="kt">int</span><span class="w"> </span><span class="nf">read_config_line</span><span class="p">(</span><span class="kt">FILE</span><span class="w"> </span><span class="o">*</span><span class="n">f</span><span class="p">,</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">*</span><span class="n">line</span><span class="p">,</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="o">**</span><span class="n">value</span><span class="p">,</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">bufsize</span><span class="p">)</span>
<span class="p">{</span>
<span class="w">	</span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">isname</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>

<span class="w">	</span><span class="o">*</span><span class="n">value</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">NULL</span><span class="p">;</span>
<span class="w">	</span><span class="k">while</span><span class="p">(</span><span class="n">i</span><span class="o">&lt;</span><span class="n">bufsize</span><span class="mi">-1</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w">		</span><span class="kt">int</span><span class="w"> </span><span class="n">c</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">next_char</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="w">		</span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">isname</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="p">(</span><span class="n">c</span><span class="o">==</span><span class="sc">&#39;#&#39;</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">c</span><span class="o">==</span><span class="sc">&#39;;&#39;</span><span class="p">))</span><span class="w"> </span><span class="p">{</span>
<span class="w">			</span><span class="n">skip_line</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="w">			</span><span class="k">continue</span><span class="p">;</span>
<span class="w">		</span><span class="p">}</span>
<span class="w">		</span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="n">isname</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">isspace</span><span class="p">(</span><span class="n">c</span><span class="p">))</span>
<span class="w">			</span><span class="k">continue</span><span class="p">;</span>

<span class="w">		</span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">c</span><span class="o">==</span><span class="sc">&#39;=&#39;</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="o">!*</span><span class="n">value</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w">			</span><span class="n">line</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="w">			</span><span class="o">*</span><span class="n">value</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">&amp;</span><span class="n">line</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">];</span>
<span class="w">		</span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">c</span><span class="o">==</span><span class="sc">&#39;\n&#39;</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="o">!</span><span class="n">isname</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w">			</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w