89 lines
1.4 KiB
C++
89 lines
1.4 KiB
C++
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/* dump.c core style dump of a file */
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/* usage: A>DUMP B:BLIP.O */
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char buffer[4096];
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main(argc,argv)
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int argc;
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char *argv[]; {
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unsigned i,numin,tot,file;
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char *cfrom;
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if (argc < 2) {
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puts("Missing Filename\n");
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}
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tot=0;
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if ((file=open(argv[1],0)) == -1) {
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puts("Cannot Open ");
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puts(argv[1]);
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exit(1);
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}
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/* read and dump 4k at a time */
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do {
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numin=read(file,buffer,4096);
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if (numin == -1) {
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puts("Cannot Read ");
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puts(argv[1]);
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exit(1);
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}
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cfrom=0;
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while (cfrom < numin) {
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/* print the offset in hex */
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ohw(cfrom+tot);
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putchar(' ');
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/* print 16 bytes in hex */
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for (i=0; i < 16; i++) {
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putchar(' ');
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ohb(buffer[cfrom++]);
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}
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cfrom-=16;
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puts(" *");
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/* print the bytes in ascii */
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for (i=0; i < 16; i++) {
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putchar((buffer[cfrom] >= ' ' && buffer[cfrom] < 0x7f)
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? buffer[cfrom]: '.');
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cfrom++;
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}
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puts("*\n");
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}
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tot+=numin;
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}
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while (numin == 4096);
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}
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/* print a word in hex */
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ohw(wrd)
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unsigned wrd; {
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ohb(wrd>>8);
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ohb(wrd);
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}
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/* print a byte in hex */
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ohb(byt)
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char byt; {
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onib(byt>>4);
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onib(byt);
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}
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/* print a nibble as a hex character */
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onib(nib)
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char nib; {
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nib&=15;
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putchar((nib >= 10) ? nib-10+'A': nib+'0');
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}
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