src/syren_msg.c

   1 /*
   2   Syren -- a lightweight downloader for Linux/BSD/MacOSX
   3   inspired by Axel Copyright 2001-2002 Wilmer van der Gaast
   4   version 0.0.6 (atomic alien)
   5   coded by Ketmar // Avalon Group
   6
   7   This program is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation; either version 3 of the License, or
  10   (at your option) any later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License with
  18   the Debian GNU/Linux distribution in file /usr/doc/copyright/GPL;
  19   if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  20   Suite 330, Boston, MA  02111-1307  USA
  21 */
  22 /*
  23   Syren UI message service
  24  */
  25 #ifndef _SYREN_MSG_C
  26 #define _SYREN_MSG_C
  27
  28 #include "syren_msg.h"
  29
  30
  31 void SyMessage (const TSyPrintStr *pfn, TSyMsgType msgtype, const char *fmt, ...) {
  32   int n, size = 256;
  33   va_list ap;
  34   char *p, *np;
  35
  36   if (!pfn || !pfn->print) return;
  37   if ((p = malloc(size)) == NULL) return;
  38   while (1) {
  39     memset(p, 0, size);
  40     va_start(ap, fmt);
  41     n = vsnprintf(p, size, fmt?fmt:"", ap);
  42     va_end(ap);
  43     if (n > -1 && n < size) break;
  44     if (n > -1) size = n+1; else size *= 2;
  45     if ((np = realloc(p, size)) == NULL) { free(p); return; }
  46     p = np;
  47   }
  48   np = p+strlen(p)-1;
  49   while (np >= p && (unsigned char)(*np) <= ' ') np--;
  50   *(np+1) = '\0';
  51   pfn->print(pfn->udata, msgtype, p);
  52   free(p);
  53 }
  54
  55
  56 #endif