1/* html.c: helper functions for html output
  2 *
  3 * Copyright (C) 2006 Lars Hjemli
  4 *
  5 * Licensed under GNU General Public License v2
  6 *   (see COPYING for full license text)
  7 */
  8
  9#include "cgit.h"
 10
 11char *fmt(const char *format, ...)
 12{
 13	static char buf[8][1024];
 14	static int bufidx;
 15	int len;
 16	va_list args;
 17
 18	bufidx++;
 19	bufidx &= 7;
 20
 21	va_start(args, format);
 22	len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
 23	va_end(args);
 24	if (len>sizeof(buf[bufidx]))
 25		die("[html.c] string truncated: %s", format);
 26	return buf[bufidx];
 27}
 28
 29void html(const char *txt)
 30{
 31	write(htmlfd, txt, strlen(txt));
 32}
 33
 34void htmlf(const char *format, ...)
 35{
 36	static char buf[65536];
 37	va_list args;
 38
 39	va_start(args, format);
 40	vsnprintf(buf, sizeof(buf), format, args);
 41	va_end(args);
 42	html(buf);
 43}
 44
 45void html_txt(char *txt)
 46{
 47	char *t = txt;
 48	while(t && *t){
 49		int c = *t;
 50		if (c=='<' || c=='>' || c=='&') {
 51			write(htmlfd, txt, t - txt);
 52			if (c=='>')
 53				html("&gt;");
 54			else if (c=='<')
 55				html("&lt;");
 56			else if (c=='&')
 57				html("&amp;");
 58			txt = t+1;
 59		}
 60		t++;
 61	}
 62	if (t!=txt)
 63		html(txt);
 64}
 65
 66void html_ntxt(int len, char *txt)
 67{
 68	char *t = txt;
 69	while(t && *t && len--){
 70		int c = *t;
 71		if (c=='<' || c=='>' || c=='&') {
 72			write(htmlfd, txt, t - txt);
 73			if (c=='>')
 74				html("&gt;");
 75			else if (c=='<')
 76				html("&lt;");
 77			else if (c=='&')
 78				html("&amp;");
 79			txt = t+1;
 80		}
 81		t++;
 82	}
 83	if (t!=txt)
 84		write(htmlfd, txt, t - txt);
 85	if (len<0)
 86		html("...");
 87}
 88
 89void html_attr(char *txt)
 90{
 91	char *t = txt;
 92	while(t && *t){
 93		int c = *t;
 94		if (c=='<' || c=='>' || c=='\'') {
 95			write(htmlfd, txt, t - txt);
 96			if (c=='>')
 97				html("&gt;");
 98			else if (c=='<')
 99				html("&lt;");
100			else if (c=='\'')
101				html("&quote;");
102			txt = t+1;
103		}
104		t++;
105	}
106	if (t!=txt)
107		html(txt);
108}
109
110void html_hidden(char *name, char *value)
111{
112	html("<input type='hidden' name='");
113	html_attr(name);
114	html("' value='");
115	html_attr(value);
116	html("'/>");
117}
118
119void html_option(char *value, char *text, char *selected_value)
120{
121	html("<option value='");
122	html_attr(value);
123	html("'");
124	if (selected_value && !strcmp(selected_value, value))
125		html(" selected='selected'");
126	html(">");
127	html_txt(text);
128	html("</option>\n");
129}
130
131void html_link_open(char *url, char *title, char *class)
132{
133	html("<a href='");
134	html_attr(url);
135	if (title) {
136		html("' title='");
137		html_attr(title);
138	}
139	if (class) {
140		html("' class='");
141		html_attr(class);
142	}
143	html("'>");
144}
145
146void html_link_close(void)
147{
148	html("</a>");
149}
150
151void html_fileperm(unsigned short mode)
152{
153	htmlf("%c%c%c", (mode & 4 ? 'r' : '-'), 
154	      (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
155}
156
157void html_filemode(unsigned short mode)
158{
159	if (S_ISDIR(mode))
160		html("d");
161	else if (S_ISLNK(mode))
162		html("l");
163	else if (S_ISGITLINK(mode))
164		html("m");
165	else
166		html("-");
167	html_fileperm(mode >> 6);
168	html_fileperm(mode >> 3);
169	html_fileperm(mode);
170}
171
172int html_include(const char *filename)
173{
174	FILE *f;
175	char buf[4096];
176	size_t len;
177
178	if (!(f = fopen(filename, "r")))
179		return -1;
180	while((len = fread(buf, 1, 4096, f)) > 0)
181		write(htmlfd, buf, len);
182	fclose(f);
183	return 0;
184}