html.c

   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
  11 char *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
  29 void html(const char *txt)
  30 {
  31         write(htmlfd, txt, strlen(txt));
  32 }
  33
  34 void 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
  45 void html_txt(char *txt)
  46 {
  47         char *t = txt;
  48         while(*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
  68
  69 void html_attr(char *txt)
  70 {
  71         char *t = txt;
  72         while(*t){
  73                 int c = *t;
  74                 if (c=='<' || c=='>' || c=='\'') {
  75                         *t = '\0';
  76                         html(txt);
  77                         *t = c;
  78                         if (c=='>')
  79                                 html("&gt;");
  80                         else if (c=='<')
  81                                 html("&lt;");
  82                         else if (c=='\'')
  83                                 html("&quote;");
  84                         txt = t+1;
  85                 }
  86                 t++;
  87         }
  88         if (t!=txt)
  89                 html(txt);
  90 }
  91
  92 void html_link_open(char *url, char *title, char *class)
  93 {
  94         html("<a href='");
  95         html_attr(url);
  96         if (title) {
  97                 html("' title='");
  98                 html_attr(title);
  99         }
 100         if (class) {
 101                 html("' class='");
 102                 html_attr(class);
 103         }
 104         html("'>");
 105 }
 106
 107 void html_link_close(void)
 108 {
 109         html("</a>");
 110 }