"Fossies" - the Fresh Open Source Software Archive

Member "mozplugger-2.1.6/debug.c" (17 Apr 2014, 4025 Bytes) of package /linux/www/old/mozplugger-2.1.6.tar.gz:

    1 /**
    2  * This file is part of mozplugger a fork of plugger, for list of developers
    3  * see the README file.
    4  *
    5  * This program is free software; you can redistribute it and/or modify
    6  * it under the terms of the GNU General Public License as published by
    7  * the Free Software Foundation; either version 2 of the License, or
    8  * (at your option) any later version.
    9  *
   10  * This program is distributed in the hope that it will be useful,
   11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   13  * GNU General Public License for more details.
   14  *
   15  * You should have received a copy of the GNU General Public License
   16  * along with this program; if not, write to the Free Software
   17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
   18  */
   19 
   20 #ifdef HAVE_CONFIG_H
   21 #include "config.h"
   22 #endif
   23 
   24 #include <unistd.h>
   25 #include <stdio.h>
   26 #include <stdlib.h>
   27 #include <stdarg.h>
   28 
   29 #include "debug.h"
   30 
   31 #ifdef DEBUG
   32 
   33 static int    debug_on = 1;
   34 static FILE * debug_output = NULL;
   35 static char * debug_path = "";
   36 
   37 /**
   38  * Open the debug file for appending to
   39  *
   40  * @return The FILE pointer, or NULL if problem
   41  */
   42 static FILE *getout(void)
   43 {
   44      char debug_filename[128];
   45      char *tmpdir;
   46 
   47      if (debug_output)
   48      {
   49           return debug_output;
   50      }
   51 
   52      if(!debug_on)
   53      {
   54           return NULL;
   55      }
   56 
   57      tmpdir = getenv("MOZPLUGGER_TMP");
   58      if(tmpdir == NULL)
   59      {
   60         tmpdir = getenv("TMPDIR");
   61         debug_path = "$MOZPLUGGER_TMP";
   62         snprintf(debug_filename, sizeof(debug_filename),
   63                                                "%s/%s", tmpdir, DEBUG_FILENAME);
   64      }
   65 
   66      if(tmpdir == NULL)
   67      {
   68           /* If (as on default Fedora 7 install) the environment variable
   69            * TMPDIR is not defined, just assume $HOME/tmp */
   70           char * homedir = getenv("HOME");
   71           if(homedir == NULL)
   72           {
   73                fprintf(stderr, "Failed to open debug file - "
   74                                "neither HOME or TMPDIR defined\n");
   75                return NULL;
   76           }
   77           debug_path = "$HOME/tmp";        /* For display purposes */
   78           snprintf(debug_filename, sizeof(debug_filename),
   79                                           "%s/tmp/%s", homedir, DEBUG_FILENAME);
   80      }
   81      else
   82      {
   83           debug_path = "$TMDIR";          /* For display purposes */
   84           snprintf(debug_filename, sizeof(debug_filename),
   85                                                "%s/%s", tmpdir, DEBUG_FILENAME);
   86      }
   87 
   88      debug_output = fopen(debug_filename,"a+");
   89      if (debug_output == NULL)
   90      {
   91           fprintf(stderr,"Failed to open debug file \'%s'\n", debug_filename);
   92           debug_on = 0;
   93           return NULL;
   94      }
   95      else
   96      {
   97           fprintf(stderr,"Opened debug file \'%s\'\n", debug_filename);
   98      }
   99 
  100      fprintf(debug_output, "------------\n");
  101      return debug_output;
  102 }
  103 
  104 /**
  105  * Close debug file
  106  */
  107 void close_debug(void)
  108 {
  109      FILE * f = getout();
  110 
  111      if(f)
  112      {
  113           fclose(f);
  114      }
  115      debug_output = NULL;
  116 }
  117 
  118 /**
  119  * Take the standard printf type arguments and write the output to the debug
  120  * file
  121  *
  122  * @param[in] fmt The printf format args
  123  * @param[in] ... The printf style arguments
  124  */
  125 void D(char *fmt, ...)
  126 {
  127      char buffer[9999];
  128      va_list ap;
  129      FILE * f = getout();
  130 
  131      if(f)
  132      {
  133           va_start(ap,fmt);
  134           vsnprintf(buffer,sizeof(buffer),fmt,ap);
  135           va_end(ap);
  136 
  137           fprintf(f,"PID%4d: %s",(int) getpid(), buffer);
  138           fflush(f);
  139      }
  140 }
  141 
  142 /**
  143  * Get path to the debug file (for display purposes only!)
  144  *
  145  * @return String containing debug path name
  146  */
  147 char * get_debug_path(void)
  148 {
  149      if(debug_path[0] == '\0')
  150      {
  151           getout();
  152      }
  153 
  154      return debug_path;
  155 }
  156 
  157 int is_debugging(void)
  158 {
  159      return 1;
  160 }
  161 
  162 #else
  163 
  164 void D(char *fmt, ...)
  165 {
  166 }
  167 
  168 void close_debug(void)
  169 {
  170 }
  171 
  172 char * get_debug_path(void)
  173 {
  174      return NULL;
  175 };
  176 
  177 int is_debugging(void)
  178 {
  179      return 0;
  180 }
  181 #endif
  182