hd.rar_指令HD

/* * @(#)hd.c 1.01 2012/3/15 * * Copyright (C) 2012 G L Ding. * All Rights Reserved. * This Module contains Proprietary Information of * G L Ding, and should be treated as Confidential. * * Title: source code * Sccsid: @(#)hd.c 1.01 2012/3/15 16:04:09 * Description: * hd(hex dump) Source code file for HP-UX/linux */ /* ** Author: G L Ding */ # include <stdio.h> # define BLEN 16 int main(argc, argv) int argc; char *argv[]; { FILE *fp; int rows, cnt, nsize; unsigned char mflag; unsigned char rc; unsigned char buf [ BLEN ]; unsigned char buf0[ BLEN ]; mflag = 0; if ( argc == 1 ) fp = stdin; else if ( argc == 2 ) { if ( strcmp(argv[1], "--version") == 0 ) { mflag = 2; fprintf(stderr, "hd version 1.0.1 20120315\n"); fprintf(stderr, "Copyright (C) 2012 G L Ding.\n"); } else { fp = fopen(argv[1], "r"); if ( fp == (FILE *) NULL ) { mflag = 1; fprintf(stderr, "ERROR: '%s': No such file.\n", argv[1]); } } } else mflag = 1; if ( mflag ) { if ( mflag == 1 ) { fprintf(stderr, "Usgae: %s [file]\n", argv[0]); return (-1); } else return 0; } memset( buf , 0x0, BLEN ); memset( buf0, 0x0, BLEN ); rows = 0; mflag = 0; while ( 1 ) { nsize = fread( buf, 1, BLEN, fp ); if ( nsize < 1 ) break; if ( memcmp(buf, buf0, BLEN) == 0 ) { if ( !mflag ) { printf("\t\t***\n"); mflag = 1; } } else { if ( mflag ) mflag = 0; printf("%08x ", rows); for ( cnt = 0; cnt < nsize; cnt++) { printf("%02x ", buf[cnt] ); if ( cnt == BLEN/2 ) putchar(' '); } if ( nsize < BLEN ) { cnt = nsize; while ( cnt < BLEN ) { printf(" "); cnt++; } if ( nsize <= BLEN/2 ) putchar(' '); } putchar(' '); for ( cnt = 0; cnt < nsize; cnt++) { if ( !isprint(buf[cnt]) ) rc = '.'; else rc = buf[cnt]; putchar(rc); } putchar('\n'); } memcpy(buf0, buf, BLEN); rows += BLEN; } if ( fp != stdin ) fclose(fp); return 0; }