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 && *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
  66 void 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
  89 void 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
 110 void 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
 119 void 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
 131 void 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
 146 void html_link_close(void)
 147 {
 148         html("</a>");
 149 }
 150
 151 void html_fileperm(unsigned short mode)
 152 {
 153         htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
 154               (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
 155 }
 156
 157 void 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
 172 int 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 }