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error.c

/*
 *  Fenix - Videogame compiler/interpreter
 *  Current release       : FENIX - PROJECT 1.0 - R 0.84
 *  Last stable release   :
 *  Project documentation : http://fenix.divsite.net
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 *  Copyright © 1999 José Luis Cebrián Pagüe
 *  Copyright © 2002 Fenix Team
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef TARGET_BEOS
#include <posix/assert.h>
#else
#include <assert.h>
#endif
#include "fxc.h"
#include "errors.h"
#include "files.h"

/* Errors indexed table */
struct _errindex errtable[10] ;


/*
 *  Generate & populate the error table
 */

void err_buildErrorTable() {

      file * fp ;
      char   fname[64] ;
      char   line[1024] ;
      char * token ;
      int      code ;
      int      size ;
      char * msg = NULL ;
      struct _errmsg * err = NULL ;

      /* open the desired localized error file, check for existence if not open EN default */
      strcpy(fname,"msg/") ;
      strcat(fname,langinfo) ;
      strcat(fname,".msg") ;

      if (!file_exists(fname))
            strcpy(fname,"msg/en.msg") ;
      fp = file_open(fname,"r") ;

      if (fp) {
            while (file_gets (fp,line,1024)) {
                  // Check for multiline...
                  if (line[0]=='_') {
                        // must resize the string and concatenate
                        if (err) {
                              size = strlen(err->msg) + strlen(line) ;
                              msg = (char *)malloc(size) ;
                              strcpy(msg,err->msg) ;
                              line[0]='\n' ;
                              strcat(msg,line) ;
                              free (err->msg) ;
                              err->msg = strdup(msg) ;
                        }
                  } else {
                        // Check for comment
                        token = strtok(line,"#") ;
                        code = 0 ;
                        while (token!=NULL) {
                              /* don't process comments */
                              if (strlen(token)==0) break ;
                              if (!code) code = atoi(token) ;
                              else msg = token ;
                              token = strtok(NULL,"#") ;
                              }
                        if (code) err = err_addError(code,msg) ;
                        }
                  }
            file_close(fp) ;
      }
}

struct _errmsg * err_addError(int code, const char * msg) {

      int idx ;
      struct _errmsg * err ;
      struct _errmsg * cerr ;
      /* build error object */

      err = malloc(sizeof(struct _errmsg)) ;
      if (err) {
            err->code = code ;
            err->msg  = strdup(msg) ;
            err->prev = NULL ;
            err->next = NULL ;

            /* determine index to use... */
            idx = code/100 ;

            /* find insertion point */

            cerr = errtable[idx].errlist ;

            if (cerr) {
                  while (cerr->next) cerr = cerr->next ;
                  cerr->next = err ;
                  err->prev = cerr ;
            } else {
                  errtable[idx].errlist = err ;
                  }

            errtable[idx].count++ ;
            }
      return err ;

}

void err_delError(struct _errmsg * err) {

      int idx ;

      if (!err) return ;

      idx = err->code/100 ;

      if (err->next) {
            err->next->prev = err->prev ;
            }

      if (err->prev)
            err->prev->next = err->next ;
      else
            errtable[idx].errlist = err->next ;

      free(err->msg) ;
      free(err) ;

      errtable[idx].count-- ;


      }

void err_destroyErrorTable(void) {

      int i ;

      for (i=0;i<10;i++) {
            while (errtable[i].count>0)  {
                  err_delError(errtable[i].errlist) ;
            }
      }
}

const char * err_getErrorByCode(int code) {

      int idx ;
      struct _errmsg * err ;

      idx = code/100 ;

      err = errtable[idx].errlist ;

      while (err && err->code!=code) err = err->next ;


      if (!err) return 0 ;
      else return err->msg ;

      }



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