libjp3dvm/event.c

   1 /*\r
   2  * Copyright (c) 2005, Herv� Drolon, FreeImage Team\r
   3  * All rights reserved.\r
   4  *\r
   5  * Redistribution and use in source and binary forms, with or without\r
   6  * modification, are permitted provided that the following conditions\r
   7  * are met:\r
   8  * 1. Redistributions of source code must retain the above copyright\r
   9  *    notice, this list of conditions and the following disclaimer.\r
  10  * 2. Redistributions in binary form must reproduce the above copyright\r
  11  *    notice, this list of conditions and the following disclaimer in the\r
  12  *    documentation and/or other materials provided with the distribution.\r
  13  *\r
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'\r
  15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE\r
  18  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
  19  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
  20  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
  21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
  22  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
  23  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
  24  * POSSIBILITY OF SUCH DAMAGE.\r
  25  */\r
  26 \r
  27 #include "opj_includes.h"\r
  28 \r
  29 // ==========================================================\r
  30 //   Utility functions\r
  31 // ==========================================================\r
  32 \r
  33 #ifndef WIN32\r
  34 static char*\r
  35 i2a(unsigned i, char *a, unsigned r) {\r
  36         if (i/r > 0) a = i2a(i/r,a,r);\r
  37         *a = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[i%r];\r
  38         return a+1;\r
  39 }\r
  40 \r
  41 /** \r
  42  Transforms integer i into an ascii string and stores the result in a; \r
  43  string is encoded in the base indicated by r.\r
  44  @param i Number to be converted\r
  45  @param a String result\r
  46  @param r Base of value; must be in the range 2 - 36\r
  47  @return Returns a\r
  48 */\r
  49 static char *\r
  50 _itoa(int i, char *a, int r) {\r
  51         r = ((r < 2) || (r > 36)) ? 10 : r;\r
  52         if(i < 0) {\r
  53                 *a = '-';\r
  54                 *i2a(-i, a+1, r) = 0;\r
  55         }\r
  56         else *i2a(i, a, r) = 0;\r
  57         return a;\r
  58 }\r
  59 \r
  60 #endif // !WIN32\r
  61 \r
  62 /* ----------------------------------------------------------------------- */\r
  63 \r
  64 opj_event_mgr_t* OPJ_CALLCONV opj_set_event_mgr(opj_common_ptr cinfo, opj_event_mgr_t *event_mgr, void *context) {\r
  65         if(cinfo) {\r
  66                 opj_event_mgr_t *previous = cinfo->event_mgr;\r
  67                 cinfo->event_mgr = event_mgr;\r
  68                 cinfo->client_data = context;\r
  69                 return previous;\r
  70         }\r
  71 \r
  72         return NULL;\r
  73 }\r
  74 \r
  75 bool opj_event_msg(opj_common_ptr cinfo, int event_type, const char *fmt, ...) {\r
  76 #define MSG_SIZE 512 /* 512 bytes should be more than enough for a short message */\r
  77         opj_msg_callback msg_handler = NULL;\r
  78 \r
  79         opj_event_mgr_t *event_mgr = cinfo->event_mgr;\r
  80         if(event_mgr != NULL) {\r
  81                 switch(event_type) {\r
  82                         case EVT_ERROR:\r
  83                                 msg_handler = event_mgr->error_handler;\r
  84                                 break;\r
  85                         case EVT_WARNING:\r
  86                                 msg_handler = event_mgr->warning_handler;\r
  87                                 break;\r
  88                         case EVT_INFO:\r
  89                                 msg_handler = event_mgr->info_handler;\r
  90                                 break;\r
  91                         default:\r
  92                                 break;\r
  93                 }\r
  94                 if(msg_handler == NULL) {\r
  95                         return false;\r
  96                 }\r
  97         } else {\r
  98                 return false;\r
  99         }\r
 100 \r
 101         if ((fmt != NULL) && (event_mgr != NULL)) {\r
 102                 va_list arg;\r
 103                 int str_length, i, j;\r
 104                 char message[MSG_SIZE];\r
 105                 memset(message, 0, MSG_SIZE);\r
 106                 /* initialize the optional parameter list */\r
 107                 va_start(arg, fmt);\r
 108                 /* check the length of the format string */\r
 109                 str_length = (strlen(fmt) > MSG_SIZE) ? MSG_SIZE : strlen(fmt);\r
 110                 /* parse the format string and put the result in 'message' */\r
 111                 for (i = 0, j = 0; i < str_length; ++i) {\r
 112                         if (fmt[i] == '%') {\r
 113                                 if (i + 1 < str_length) {\r
 114                                         switch(tolower(fmt[i + 1])) {\r
 115                                                 case '%' :\r
 116                                                         message[j++] = '%';\r
 117                                                         break;\r
 118                                                 case 'o' : /* octal numbers */\r
 119                                                 {\r
 120                                                         char tmp[16];\r
 121                                                         _itoa(va_arg(arg, int), tmp, 8);\r
 122                                                         strcat(message, tmp);\r
 123                                                         j += strlen(tmp);\r
 124                                                         ++i;\r
 125                                                         break;\r
 126                                                 }\r
 127                                                 case 'i' : /* decimal numbers */\r
 128                                                 case 'd' :\r
 129                                                 {\r
 130                                                         char tmp[16];\r
 131                                                         _itoa(va_arg(arg, int), tmp, 10);\r
 132                                                         strcat(message, tmp);\r
 133                                                         j += strlen(tmp);\r
 134                                                         ++i;\r
 135                                                         break;\r
 136                                                 }\r
 137                                                 case 'x' : /* hexadecimal numbers */\r
 138                                                 {\r
 139                                                         char tmp[16];\r
 140                                                         _itoa(va_arg(arg, int), tmp, 16);\r
 141                                                         strcat(message, tmp);\r
 142                                                         j += strlen(tmp);\r
 143                                                         ++i;\r
 144                                                         break;\r
 145                                                 }\r
 146                                                 case 's' : /* strings */\r
 147                                                 {\r
 148                                                         char *tmp = va_arg(arg, char*);\r
 149                                                         strcat(message, tmp);\r
 150                                                         j += strlen(tmp);\r
 151                                                         ++i;\r
 152                                                         break;\r
 153                                                 }\r
 154                                                 case 'f' :      /* floats */\r
 155                                                 {\r
 156                                                         char tmp[16];\r
 157                                                         double value = va_arg(arg, double);\r
 158                                                         sprintf(tmp, "%f", value);\r
 159                                                         strcat(message, tmp);\r
 160                                                         j += strlen(tmp);\r
 161                                                         ++i;\r
 162                                                         break;\r
 163                                                 }\r
 164                                         };\r
 165                                 } else {\r
 166                                         message[j++] = fmt[i];\r
 167                                 }\r
 168                         } else {\r
 169                                 message[j++] = fmt[i];\r
 170                         };\r
 171                 }\r
 172                 /* deinitialize the optional parameter list */\r
 173                 va_end(arg);\r
 174 \r
 175                 /* output the message to the user program */\r
 176                 msg_handler(message, cinfo->client_data);\r
 177         }\r
 178 \r
 179         return true;\r
 180 }\r
 181 \r