chanserv/q9snprintf.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdarg.h>
   4 #include <string.h>
   5 #include <time.h>
   6 #include "../lib/sstring.h"
   7 #include "../lib/stringbuf.h"
   8 #include "../lib/ccassert.h"
   9 #include "../core/error.h"
  10 #include "chanserv_messages.h"
  11
  12 #define MAXARGS 10
  13 #define CONVBUF 512
  14
  15 void q9strftime(char *buf, size_t size, time_t t) {
  16   strftime(buf, size, Q9_FORMAT_TIME, gmtime(&t));
  17 }
  18
  19 void q9vsnprintf(char *buf, size_t size, const char *format, const char *args, va_list ap) {
  20   StringBuf b;
  21   const char *p;
  22   char *c;
  23
  24   char convbuf[MAXARGS][CONVBUF];
  25
  26   CCASSERT(CONVBUF > TIMELEN);
  27
  28   if(size == 0)
  29     return;
  30
  31   {
  32     int argno = 0, i;
  33
  34     int d;
  35     char *s;
  36     double g;
  37     unsigned int u;
  38     time_t t;
  39
  40     for(i=0;i<MAXARGS;i++)
  41       convbuf[i][0] = '\0';
  42
  43     for(;*args;args++) {
  44       char *cb = convbuf[argno++];
  45
  46       switch(*args) {
  47         case 's':
  48           s = va_arg(ap, char *);
  49           snprintf(cb, CONVBUF, "%s", s);
  50           break;
  51         case 'd':
  52           d = va_arg(ap, int);
  53           snprintf(cb, CONVBUF, "%d", d);
  54           break;
  55         case 'u':
  56           u = va_arg(ap, unsigned int);
  57           snprintf(cb, CONVBUF, "%u", u);
  58           break;
  59         case 'g':
  60           g = va_arg(ap, double);
  61           snprintf(cb, CONVBUF, "%.1f", g);
  62           break;
  63         case 'T':
  64           t = va_arg(ap, time_t);
  65           q9strftime(cb, CONVBUF, t);
  66           break;
  67         default:
  68           /* calls exit(0) */
  69           Error("chanserv", ERR_STOP, "Bad format specifier '%c' supplied in q9vsnprintf, format: '%s'", *args, format);
  70       }
  71     }
  72   }
  73
  74   sbinit(&b, buf, size);
  75
  76   for(p=format;*p;p++) {
  77     if(*p != '$') {
  78       if(!sbaddchar(&b, *p))
  79         break;
  80       continue;
  81     }
  82     p++;
  83     if(*p == '\0')
  84       break;
  85     if(*p == '$') {
  86       if(!sbaddchar(&b, *p))
  87         break;
  88       continue;
  89     }
  90
  91     c = NULL;
  92     switch(*p) {
  93 /*
  94       case 'C':
  95         c = botname; break;
  96       case 'N':
  97         c = network; break;
  98 */
  99       case '0':
 100       case '1':
 101       case '2':
 102       case '3':
 103       case '4':
 104       case '5':
 105       case '6':
 106       case '7':
 107       case '8':
 108       case '9':
 109         c = convbuf[*p - '0']; break;
 110       default:
 111         c = "(bad format specifier)";
 112     }
 113     if(c)
 114       if(!sbaddstr(&b, c))
 115         break;
 116   }
 117
 118   sbterminate(&b);
 119
 120   /* not required */
 121   /*
 122   buf[size-1] = '\0';
 123   */
 124 }
 125
 126 void q9snprintf(char *buf, size_t size, const char *format, const char *args, ...) {
 127   va_list ap;
 128
 129   va_start(ap, args);
 130   q9vsnprintf(buf, size, format, args, ap);
 131   va_end(ap);
 132 }