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95 lines
2.0 KiB
C
95 lines
2.0 KiB
C
/* Copyright (C) 1998 DJ Delorie, see COPYING.DJ for details */
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/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
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/* Updated 2008 to use fread/fopen and friends instead of read/open so it compiles with GCC on Unix (Rubidium) */
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <unistd.h>
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#include <ctype.h>
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static void
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exe2aout(char *fname)
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{
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unsigned short header[3];
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FILE *ifile;
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FILE *ofile;
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char buf[4096];
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int rbytes;
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char *dot = strrchr(fname, '.');
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if (!dot || strlen(dot) != 4
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|| tolower(dot[1]) != 'e'
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|| tolower(dot[2]) != 'x'
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|| tolower(dot[3]) != 'e')
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{
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fprintf(stderr, "%s: Arguments MUST end with a .exe extension\n", fname);
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return;
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}
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ifile = fopen(fname, "rb");
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if (!ifile)
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{
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perror(fname);
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return;
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}
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fread(header, sizeof(header), 1, ifile);
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if (header[0] == 0x5a4d)
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{
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long header_offset = (long)header[2]*512L;
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if (header[1])
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header_offset += (long)header[1] - 512L;
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fseek(ifile, header_offset, SEEK_SET);
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header[0] = 0;
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fread(header, sizeof(header), 1, ifile);
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if ((header[0] != 0x010b) && (header[0] != 0x014c))
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{
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fprintf(stderr, "`%s' does not have a COFF/AOUT program appended to it\n", fname);
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return;
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}
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fseek(ifile, header_offset, SEEK_SET);
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}
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else
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{
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fprintf(stderr, "`%s' is not an .EXE file\n", fname);
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return;
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}
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*dot = 0;
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ofile = fopen(fname, "w+b");
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if (!ofile)
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{
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perror(fname);
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return;
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}
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while ((rbytes=fread(buf, 1, 4096, ifile)) > 0)
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{
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int wb = fwrite(buf, 1, rbytes, ofile);
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if (wb < 0)
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{
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perror(fname);
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break;
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}
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if (wb < rbytes)
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{
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fprintf(stderr, "`%s': disk full\n", fname);
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exit(1);
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}
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}
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fclose(ifile);
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fclose(ofile);
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}
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int
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main(int argc, char **argv)
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{
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int i;
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if (argc == 1) printf("Usage: %s <exename>", argv[0]);
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for (i=1; i<argc; i++)
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exe2aout(argv[i]);
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return 0;
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}
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