rbutil/icons/bin2c.c

   1  // bin2c.c
   2  //
   3  // convert a binary file into a C source vector
   4  //
   5  // put into the public domain by Sandro Sigala
   6  //
   7  // syntax:  bin2c [-c] [-z] <input_file> <output_file>
   8  //
   9  //          -c    add the "const" keyword to definition
  10  //          -z    terminate the array with a zero (useful for embedded C strings)
  11  //
  12  // examples:
  13  //     bin2c -c myimage.png myimage_png.cpp
  14  //     bin2c -z sometext.txt sometext_txt.cpp
  15
  16  #include <ctype.h>
  17  #include <stdio.h>
  18  #include <stdlib.h>
  19  #include <string.h>
  20
  21  #ifndef PATH_MAX
  22  #define PATH_MAX 1024
  23  #endif
  24
  25  int useconst = 0;
  26  int zeroterminated = 0;
  27
  28  int myfgetc(FILE *f)
  29  {
  30         int c = fgetc(f);
  31         if (c == EOF && zeroterminated) {
  32                 zeroterminated = 0;
  33                 return 0;
  34         }
  35         return c;
  36  }
  37
  38
  39  void process(const char *ifname, const char *ofname)
  40  {
  41         FILE *ifile, *ofile;
  42         /* modified */
  43         int counter=0;
  44         char buf2[PATH_MAX];
  45         char* cp2;
  46         char* cp3;
  47         if ((cp3 = strrchr(ofname, '/')) != NULL)
  48                 ++cp3;
  49         else {
  50                 if ((cp3 = strrchr(ofname, '\\')) != NULL)
  51                         ++cp3;
  52                 else
  53                         cp3 = (char*) ofname;
  54         }
  55
  56         strcpy(buf2, cp3);
  57         cp2 = strrchr(buf2, '.');
  58         *cp2 = '.';
  59         cp2++;
  60         *cp2 = 'h';
  61         cp2++;
  62         *cp2 ='\0';
  63
  64
  65         ifile = fopen(ifname, "rb");
  66         if (ifile == NULL) {
  67                 fprintf(stderr, "cannot open %s for reading\n", ifname);
  68                 exit(1);
  69         }
  70         ofile = fopen(ofname, "wb");
  71         if (ofile == NULL) {
  72                 fprintf(stderr, "cannot open %s for writing\n", ofname);
  73                 exit(1);
  74         }
  75         char buf[PATH_MAX], *p;
  76         const char *cp;
  77         if ((cp = strrchr(ifname, '/')) != NULL)
  78                 ++cp;
  79         else {
  80                 if ((cp = strrchr(ifname, '\\')) != NULL)
  81                         ++cp;
  82                 else
  83                         cp = ifname;
  84         }
  85         strcpy(buf, cp);
  86         for (p = buf; *p != '\0'; ++p)
  87                 if (!isalnum(*p))
  88                         *p = '_';
  89         fprintf(ofile,"#include \"%s\" \n\n",buf2);
  90         fprintf(ofile, "%sunsigned char %s[] = {\n", useconst ? "const " : "", buf);
  91         int c, col = 1;
  92         while ((c = myfgetc(ifile)) != EOF) {
  93          counter++;
  94                 if (col >= 78 - 6) {
  95                         fputc('\n', ofile);
  96                         col = 1;
  97                 }
  98                 fprintf(ofile, "0x%.2x, ", c);
  99                 col += 6;
 100
 101         }
 102         fprintf(ofile, "\n};\n");
 103
 104         /* modified */
 105         fprintf(ofile,"int %s_length = %i; \n",buf,counter);
 106
 107
 108         FILE *o2file;
 109         o2file = fopen(buf2, "wb");
 110         if (o2file == NULL) {
 111                 fprintf(stderr, "cannot open %s for writing\n", buf2);
 112                 exit(1);
 113         }
 114
 115         fprintf(o2file, "#ifndef __%s__ \n", buf);
 116         fprintf(o2file, "#define __%s__ \n", buf);
 117
 118         fprintf(o2file, "extern %sunsigned char %s[]; \n\n", useconst ? "const " : "", buf);
 119         fprintf(o2file, "extern int %s_length; \n\n", buf);
 120
 121         fprintf(o2file, "#endif \n");
 122
 123         fclose(ifile);
 124         fclose(ofile);
 125         fclose(o2file);
 126  }
 127
 128  void usage(void)
 129  {
 130         fprintf(stderr, "usage: bin2c <input_files> \n");
 131         exit(1);
 132  }
 133
 134  int main(int argc, char **argv)
 135  {
 136     if (argc < 2) {
 137                 usage();
 138         }
 139         int i;
 140         for(i = 1;i < argc ; i++)
 141         {
 142        char buf[PATH_MAX];
 143            char* cp;
 144            strcpy(buf, argv[i]);
 145            cp = strrchr(buf, '.');
 146            cp++;
 147            strcpy(cp,"cpp");
 148            process(argv[i], buf);
 149     }
 150
 151
 152     /*
 153         while (argc > 3) {
 154                 if (!strcmp(argv[1], "-c")) {
 155                         useconst = 1;
 156                         --argc;
 157                         ++argv;
 158                 } else if (!strcmp(argv[1], "-z")) {
 159                         zeroterminated = 1;
 160                         --argc;
 161                         ++argv;
 162                 } else {
 163                         usage();
 164                 }
 165         }
 166         if (argc != 3) {
 167                 usage();
 168         }
 169         process(argv[1], argv[2]);
 170         */
 171         return 0;
 172  }