rbutil/tools/bin2c.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Dave Chapman
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <sys/types.h>
  25 #include <sys/stat.h>
  26 #include <fcntl.h>
  27 #include <stdlib.h>
  28 #if !defined(_MSC_VER)
  29 #include <unistd.h>
  30 #else
  31 #include <io.h>
  32 #define snprintf _snprintf
  33 #define open _open
  34 #define close _close
  35 #define read _read
  36 #endif
  37
  38 #ifndef O_BINARY
  39 #define O_BINARY 0
  40 #endif
  41
  42 static off_t filesize(int fd)
  43 {
  44     struct stat buf;
  45
  46     fstat(fd,&buf);
  47     return buf.st_size;
  48 }
  49
  50 static int write_cfile(const unsigned char* buf, off_t len, const char* cname)
  51 {
  52     char filename[256];
  53     FILE* fp;
  54     int i;
  55
  56     snprintf(filename,256,"%s.c",cname);
  57
  58     fp = fopen(filename,"w+");
  59     if (fp == NULL) {
  60         fprintf(stderr,"Couldn't open %s\n",filename);
  61         return -1;
  62     }
  63
  64     fprintf(fp,"/* Generated by bin2c */\n\n");
  65     fprintf(fp,"unsigned char %s[] = {",cname);
  66
  67     for (i=0;i<len;i++) {
  68         if ((i % 16) == 0) {
  69            fprintf(fp,"\n    ");
  70         }
  71         if (i == (len-1)) {
  72             fprintf(fp,"0x%02x",buf[i]);
  73         } else {
  74             fprintf(fp,"0x%02x, ",buf[i]);
  75         }
  76     }
  77     fprintf(fp,"\n};\n");
  78
  79     fclose(fp);
  80     return 0;
  81 }
  82
  83 static int write_hfile(off_t len, const char* cname)
  84 {
  85     char filename[256];
  86     FILE* fp;
  87
  88     snprintf(filename,256,"%s.h",cname);
  89     fp = fopen(filename,"w+");
  90     if (fp == NULL) {
  91         fprintf(stderr,"Couldn't open %s\n",filename);
  92         return -1;
  93     }
  94
  95     fprintf(fp,"/* Generated by bin2c */\n\n");
  96     fprintf(fp,"#define LEN_%s %d\n",cname,(int)len);
  97     fprintf(fp,"extern unsigned char %s[];\n",cname);
  98     fclose(fp);
  99     return 0;
 100 }
 101
 102 int main (int argc, char* argv[])
 103 {
 104     char* infile;
 105     char* cname;
 106     int fd;
 107     unsigned char* buf;
 108     int len;
 109     int n;
 110
 111     if (argc != 3) {
 112         fprintf(stderr,"Usage: bin2c file cname\n");
 113         return 0;
 114     }
 115
 116     infile=argv[1];
 117     cname=argv[2];
 118
 119     fd = open(infile,O_RDONLY|O_BINARY);
 120     if (fd < 0) {
 121         fprintf(stderr,"Can not open %s\n",infile);
 122         return 0;
 123     }
 124
 125     len = filesize(fd);
 126
 127     buf = malloc(len);
 128     n = read(fd,buf,len);
 129     if (n < len) {
 130         fprintf(stderr,"Short read, aborting\n");
 131         return 0;
 132     }
 133     close(fd);
 134
 135     if (write_cfile(buf,len,cname) < 0) {
 136         return -1;
 137     }
 138     if (write_hfile(len,cname) < 0) {
 139         return -1;
 140     }
 141
 142     return 0;
 143 }