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			*t = '\0';
 52			html(txt);
 53			*t = c;
 54			if (c=='>')
 55				html("&gt;");
 56			else if (c=='<')
 57				html("&lt;");
 58			else if (c=='&')
 59				html("&amp;");
 60			txt = t+1;
 61		}
 62		t++;
 63	}
 64	if (t!=txt)
 65		html(txt);
 66}
 67
 68void html_ntxt(int len, char *txt)
 69{
 70	char *t = txt;
 71	while(t && *t && len--){
 72		int c = *t;
 73		if (c=='<' || c=='>' || c=='&') {
 74			*t = '\0';
 75			html(txt);
 76			*t = c;
 77			if (c=='>')
 78				html("&gt;");
 79			else if (c=='<')
 80				html("&lt;");
 81			else if (c=='&')
 82				html("&amp;");
 83			txt = t+1;
 84		}
 85		t++;
 86	}
 87	if (t!=txt) {
 88		char c = *t;
 89		*t = '\0';
 90		html(txt);
 91		*t = c;
 92	}
 93	if (len<0)
 94		html("...");
 95}
 96
 97void html_attr(char *txt)
 98{
 99	char *t = txt;
100	while(t && *t){
101		int c = *t;
102		if (c=='<' || c=='>' || c=='\'') {
103			*t = '\0';
104			html(txt);
105			*t = c;
106			if (c=='>')
107				html("&gt;");
108			else if (c=='<')
109				html("&lt;");
110			else if (c=='\'')
111				html("&quote;");
112			txt = t+1;
113		}
114		t++;
115	}
116	if (t!=txt)
117		html(txt);
118}
119
120void html_hidden(char *name, char *value)
121{
122	html("<input type='hidden' name='");
123	html_attr(name);
124	html("' value='");
125	html_attr(value);
126	html("'/>");
127}
128
129void html_link_open(char *url, char *title, char *class)
130{
131	html("<a href='");
132	html_attr(url);
133	if (title) {
134		html("' title='");
135		html_attr(title);
136	}
137	if (class) {
138		html("' class='");
139		html_attr(class);
140	}
141	html("'>");
142}
143
144void html_link_close(void)
145{
146	html("</a>");
147}
148
149void html_fileperm(unsigned short mode)
150{
151	htmlf("%c%c%c", (mode & 4 ? 'r' : '-'), 
152	      (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
153}
154
155void html_filemode(unsigned short mode)
156{
157	if (S_ISDIR(mode))
158		html("d");
159	else if (S_ISLNK(mode))
160		html("l");
161	else if (S_ISDIRLNK(mode))
162		html("m");
163	else
164		html("-");
165	html_fileperm(mode >> 6);
166	html_fileperm(mode >> 3);
167	html_fileperm(mode);
168}
169
170int html_include(const char *filename)
171{
172	FILE *f;
173	char buf[4096];
174	size_t len;
175
176	if (!(f = fopen(filename, "r")))
177		return -1;
178	while((len = fread(buf, 1, 4096, f)) > 0)
179		write(htmlfd, buf, len);
180	fclose(f);
181	return 0;
182}