xxd.c
资源名称:vim53src.zip [点击查看]
上传用户:gddssl
上传日期:2007-01-06
资源大小:1003k
文件大小:19k
源码类别:
编辑器/阅读器
开发平台:
DOS
- /* xxd: my hexdump facility. jw
- *
- * 2.10.90 changed to word output
- * 3.03.93 new indent style, dumb bug inserted and fixed.
- * -c option, mls
- * 26.04.94 better option parser, -ps, -l, -s added.
- * 1.07.94 -r badly needs - as input file. Per default autoskip over
- * consequtive lines of zeroes, as unix od does.
- * -a shows them too.
- * -i dump as c-style #include "file.h"
- * 1.11.95 if "xxd -i" knows the filename, an 'unsigned char filename_bits[]'
- * array is written in correct c-syntax.
- * -s improved, now defaults to absolute seek, relative requires a '+'.
- * -r improved, now -r -s -0x... is supported.
- * change/suppress leading ' ' bytes.
- * -l n improved: stops exactly after n bytes.
- * -r improved, better handling of partial lines with trailing garbage.
- * -r improved, now -r -p works again!
- * -r improved, less flushing, much faster now! (that was silly)
- * 3.04.96 Per repeated request of a single person: autoskip defaults to off.
- * 15.05.96 -v added. They want to know the version.
- * -a fixed, to show last line inf file ends in all zeros.
- * -u added: Print upper case hex-letters, as preferred by unix bc.
- * -h added to usage message. Usage message extended.
- * Now using outfile if specified even in normal mode, aehem.
- * No longer mixing of ints and longs. May help doze people.
- * Added binify ioctl for same reason. (Enough Doze stress for 1996!)
- * 16.05.96 -p improved, removed occasional superfluous linefeed.
- * 20.05.96 -l 0 fixed. tried to read anyway.
- * 21.05.96 -i fixed. now honours -u, and prepends __ to numeric filenames.
- * compile -DWIN32 for NT or W95. George V. Reilly, * -v improved :-)
- * support --gnuish-longhorn-options
- * 25.05.96 MAC support added: CodeWarrior already uses ``outline'' in Types.h
- * which is included by MacHeaders (Axel Kielhorn). Renamed to
- * xxdline().
- * 7.06.96 -i printed 'int' instead of 'char'. *blush*
- * added Bram's OS2 ifdefs...
- * 18.07.96 gcc -Wall @ SunOS4 is now slient.
- * Added osver for MSDOS/DJGPP/WIN32.
- * 29.08.96 Added size_t to strncmp() for Amiga.
- * 24.03.97 Windows NT support (Phil Hanna). Clean exit for Amiga WB (Bram)
- * 02.04.97 Added -E option, to have EBCDIC translation instead of ASCII
- * (antonio.colombo@jrc.org)
- * 22.05.97 added -g (group octets) option (jcook@namerica.kla.com).
- *
- * (c) 1990-1997 by Juergen Weigert (jnweiger@informatik.uni-erlangen.de)
- *
- * Distribute freely and credit me,
- * make money and share with me,
- * lose money and don't ask me.
- */
- #include <stdio.h>
- #include <fcntl.h>
- #ifdef __TSC__
- # define MSDOS
- #endif
- #if !defined(OS2) && defined(__EMX__)
- # define OS2
- #endif
- #if defined(MSDOS) || defined(WIN32) || defined(OS2)
- # include <io.h> /* for setmode() */
- #else
- # ifdef UNIX
- # include <unistd.h>
- # endif
- #endif
- #include <stdlib.h>
- #include <string.h> /* for strncmp() */
- #include <ctype.h> /* for isalnum() */
- #if __MWERKS__ && !defined(__BEOS__)
- # include <unix.h> /* for fdopen() on MAC */
- #endif
- /*
- * This corrects the problem of missing prototypes for certain functions
- * in some GNU installations (e.g. SunOS 4.1.x).
- */
- #if defined(__GNUC__) && defined(__STDC__)
- # ifndef __USE_FIXED_PROTOTYPES__
- # define __USE_FIXED_PROTOTYPES__
- # endif
- #endif
- #ifndef __USE_FIXED_PROTOTYPES__
- /*
- * This is historic and works only if the compiler really has no prototypes:
- *
- * Include prototypes for Sun OS 4.x, when using an ANSI compiler.
- * FILE is defined on OS 4.x, not on 5.x (Solaris).
- * if __SVR4 is defined (some Solaris versions), don't include this.
- */
- #if defined(sun) && defined(FILE) && !defined(__SVR4) && defined(__STDC__)
- # define __P(a) a
- /* excerpt from my sun_stdlib.h */
- extern int fprintf __P((FILE *, char *, ...));
- extern int fputs __P((char *, FILE *));
- extern int _flsbuf __P((unsigned char, FILE *));
- extern int _filbuf __P((FILE *));
- extern int fflush __P((FILE *));
- extern int fclose __P((FILE *));
- extern int fseek __P((FILE *, long, int));
- extern int rewind __P((FILE *));
- extern void perror __P((char *));
- # endif
- #endif
- extern long int strtol();
- extern long int ftell();
- char version[] = "xxd V1.8 22may97 by Juergen Weigert";
- #ifdef WIN32
- char osver[] = " (Win32)";
- #else
- # ifdef DJGPP
- char osver[] = " (dos 32 bit)";
- # else
- # ifdef MSDOS
- char osver[] = " (dos 16 bit)";
- # else
- char osver[] = "";
- # endif
- # endif
- #endif
- #if defined(MSDOS) || defined(WIN32) || defined(OS2)
- # define BIN_READ(yes) ((yes) ? "rb" : "rt")
- # define BIN_WRITE(yes) ((yes) ? "wb" : "wt")
- # define BIN_CREAT(yes) ((yes) ? (O_CREAT|O_BINARY) : O_CREAT)
- # define BIN_ASSIGN(fp, yes) setmode(fileno(fp), (yes) ? O_BINARY : O_TEXT)
- # define PATH_SEP '\'
- #else
- # define BIN_READ(dummy) "r"
- # define BIN_WRITE(dummy) "w"
- # define BIN_CREAT(dummy) O_CREAT
- # define BIN_ASSIGN(fp, dummy) fp
- # define PATH_SEP '/'
- #endif
- /* open has only to arguments on the Mac */
- #if __MWERKS__
- # define OPEN(name, mode, umask) open(name, mode)
- #else
- # define OPEN(name, mode, umask) open(name, mode, umask)
- #endif
- #ifdef AMIGA
- # define STRNCMP(s1, s2, l) strncmp(s1, s2, (size_t)l)
- #else
- # define STRNCMP(s1, s2, l) strncmp(s1, s2, l)
- #endif
- #ifndef __P
- # ifdef __STDC__
- # define __P(a) a
- # else
- # define __P(a) ()
- # endif
- #endif
- /* Let's collect some prototypes */
- /* CodeWarrior is really picky about missing prototypes */
- static void exit_with_usage __P((char *));
- static int huntype __P((FILE *, FILE *, FILE *, char *, int, int, long));
- static void xxdline __P((FILE *, char *, int));
- #define TRY_SEEK /* attempt to use lseek, or skip forward by reading */
- #define COLS 256 /* change here, if you ever need more columns */
- #define LLEN (9 + 3*COLS + 2 + COLS)
- char hexxa[] = "0123456789abcdef0123456789ABCDEF", *hexx = hexxa;
- /* the different hextypes known by this program: */
- #define HEX_NORMAL 0
- #define HEX_POSTSCRIPT 1
- #define HEX_CINCLUDE 2
- static void
- exit_with_usage(pname)
- char *pname;
- {
- fprintf(stderr, "Usage:n %s [options] [infile [outfile]]n", pname);
- fprintf(stderr, " orn %s -r [-s [-]offset] [-c cols] [-ps] [infile [outfile]]n", pname);
- fprintf(stderr, "Options:n");
- fprintf(stderr, " -a toggle autoskip: A single '*' replaces nul-lines. Default off.n");
- fprintf(stderr, " -c cols format <cols> octets per line. Default 16 (-i: 12, -ps: 30).n");
- fprintf(stderr, " -E show characters in EBCDIC. Default ASCII.n");
- fprintf(stderr, " -g number of octets per group in normal output. Default 2.n");
- fprintf(stderr, " -h print this summary.n");
- fprintf(stderr, " -i output in C include file style.n");
- fprintf(stderr, " -l len stop after <len> octets.n");
- fprintf(stderr, " -ps output in postscript continuous hexdump style.n");
- fprintf(stderr, " -r reverse operation: convert (or patch) hexdump into binary.n");
- fprintf(stderr, " -r -s off revert with <off> added to file positions found in hexdump.n");
- fprintf(stderr, " -s %sseek start at <seek> bytes abs. %sinfile offset.n",
- #ifdef TRY_SEEK
- "[+][-]", "(or +: rel.) ");
- #else
- "", "");
- #endif
- fprintf(stderr, " -u use upper case hex letters.n");
- fprintf(stderr, " -v show version: "%s%s".n", version, osver);
- exit(1);
- }
- /*
- * Max. cols binary characters are decoded from the input stream per line.
- * Two adjacent garbage characters after evaluated data delimit valid data.
- * Everything up to the next newline is discarded.
- *
- * The name is historic and came from 'undo type opt h'.
- */
- static int
- huntype(fpi, fpo, fperr, pname, cols, hextype, base_off)
- FILE *fpi, *fpo, *fperr;
- char *pname;
- int cols, hextype;
- long base_off;
- {
- int c, ign_garb = 1, n1 = -1, n2 = 0, n3, p = cols;
- long have_off = 0, want_off = 0;
- rewind(fpi);
- while ((c = getc(fpi)) != EOF)
- {
- if (c == 'r') /* Doze style input file? */
- continue;
- n3 = n2;
- n2 = n1;
- if (c >= '0' && c <= '9')
- n1 = c - '0';
- else if (c >= 'a' && c <= 'f')
- n1 = c - 'a' + 10;
- else if (c >= 'A' && c <= 'F')
- n1 = c - 'A' + 10;
- else
- {
- n1 = -1;
- if (ign_garb)
- continue;
- }
- ign_garb = 0;
- if (p >= cols)
- {
- if (!hextype)
- {
- if (n1 < 0)
- {
- p = 0;
- continue;
- }
- want_off = (want_off << 4) | n1;
- continue;
- }
- else
- p = 0;
- }
- if (base_off + want_off != have_off)
- {
- fflush(fpo);
- #ifdef TRY_SEEK
- c = fseek(fpo, base_off + want_off - have_off, 1);
- if (c >= 0)
- have_off = base_off + want_off;
- #endif
- if (base_off + want_off < have_off)
- {
- fprintf(fperr, "%s: sorry, cannot seek backwards.n", pname);
- return 5;
- }
- for (; have_off < base_off + want_off; have_off++)
- putc(0, fpo);
- }
- if (n2 >= 0 && n1 >= 0)
- {
- putc((n2 << 4) | n1, fpo);
- have_off++;
- want_off++;
- n1 = -1;
- if (++p >= cols)
- {
- if (!hextype)
- want_off = 0;
- while ((c = getc(fpi)) != 'n' && c != EOF)
- ;
- ign_garb = 1;
- }
- }
- else if (n1 < 0 && n2 < 0 && n3 < 0)
- {
- if (!hextype)
- want_off = 0;
- while ((c = getc(fpi)) != 'n' && c != EOF)
- ;
- ign_garb = 1;
- }
- }
- fflush(fpo);
- #ifdef TRY_SEEK
- fseek(fpo, 0L, 2);
- #endif
- fclose(fpo);
- fclose(fpi);
- return 0;
- }
- /*
- * Print line l. If nz is false, xxdline regards the line a line of
- * zeroes. If there are three or more consecutive lines of zeroes,
- * they are replaced by a single '*' character.
- *
- * If the output ends with more than two lines of zeroes, you
- * should call xxdline again with l being the last line and nz
- * negative. This ensures that the last line is shown even when
- * it is all zeroes.
- *
- * If nz is always positive, lines are never suppressed.
- */
- static void
- xxdline(fp, l, nz)
- FILE *fp;
- char *l;
- int nz;
- {
- static char z[LLEN+1];
- static int zero_seen = 0;
- if (!nz && zero_seen == 1)
- strcpy(z, l);
- if (nz || !zero_seen++)
- {
- if (nz)
- {
- if (nz < 0)
- zero_seen--;
- if (zero_seen == 2)
- fputs(z, fp);
- if (zero_seen > 2)
- fputs("*n", fp);
- }
- if (nz >= 0 || zero_seen > 0)
- fputs(l, fp);
- if (nz)
- zero_seen = 0;
- }
- }
- /* This is an EBCDIC to ASCII conversion table */
- /* from a proposed BTL standard April 16, 1979 */
- static unsigned char etoa64[] =
- {
- 0040,0240,0241,0242,0243,0244,0245,0246,
- 0247,0250,0325,0056,0074,0050,0053,0174,
- 0046,0251,0252,0253,0254,0255,0256,0257,
- 0260,0261,0041,0044,0052,0051,0073,0176,
- 0055,0057,0262,0263,0264,0265,0266,0267,
- 0270,0271,0313,0054,0045,0137,0076,0077,
- 0272,0273,0274,0275,0276,0277,0300,0301,
- 0302,0140,0072,0043,0100,0047,0075,0042,
- 0303,0141,0142,0143,0144,0145,0146,0147,
- 0150,0151,0304,0305,0306,0307,0310,0311,
- 0312,0152,0153,0154,0155,0156,0157,0160,
- 0161,0162,0136,0314,0315,0316,0317,0320,
- 0321,0345,0163,0164,0165,0166,0167,0170,
- 0171,0172,0322,0323,0324,0133,0326,0327,
- 0330,0331,0332,0333,0334,0335,0336,0337,
- 0340,0341,0342,0343,0344,0135,0346,0347,
- 0173,0101,0102,0103,0104,0105,0106,0107,
- 0110,0111,0350,0351,0352,0353,0354,0355,
- 0175,0112,0113,0114,0115,0116,0117,0120,
- 0121,0122,0356,0357,0360,0361,0362,0363,
- 0134,0237,0123,0124,0125,0126,0127,0130,
- 0131,0132,0364,0365,0366,0367,0370,0371,
- 0060,0061,0062,0063,0064,0065,0066,0067,
- 0070,0071,0372,0373,0374,0375,0376,0377
- };
- int
- main(argc, argv)
- int argc;
- char *argv[];
- {
- FILE *fp, *fpo;
- int c, e, p = 0, relseek = 1, negseek = 0, revert = 0;
- int cols = 0, nonzero = 0, autoskip = 0, hextype = HEX_NORMAL;
- int ebcdic = 0;
- int octspergrp = 2; /* number of octets grouped in output */
- int grplen; /* total chars per octet group */
- long length = -1, n = 0, seekoff = 0;
- char l[LLEN+1];
- char *pname, *pp;
- #ifdef AMIGA
- /* This program doesn't work when started from the Workbench */
- if (argc == 0)
- exit(1);
- #endif
- pname = argv[0];
- for (pp = pname; *pp; )
- if (*pp++ == PATH_SEP)
- pname = pp;
- while (argc >= 2)
- {
- pp = argv[1] + (!STRNCMP(argv[1], "--", 2) && argv[1][2]);
- if (!STRNCMP(pp, "-a", 2)) autoskip = 1 - autoskip;
- else if (!STRNCMP(pp, "-u", 2)) hexx = hexxa + 16;
- else if (!STRNCMP(pp, "-p", 2)) hextype = HEX_POSTSCRIPT;
- else if (!STRNCMP(pp, "-i", 2)) hextype = HEX_CINCLUDE;
- else if (!STRNCMP(pp, "-r", 2)) revert++;
- else if (!STRNCMP(pp, "-E", 2)) ebcdic++;
- else if (!STRNCMP(pp, "-v", 2))
- {
- fprintf(stderr, "%s%sn", version, osver);
- exit(0);
- }
- else if (!STRNCMP(pp, "-c", 2))
- {
- if (pp[2] && STRNCMP("ols", pp + 2, 3))
- cols = (int)strtol(pp + 2, NULL, 0);
- else
- {
- if (!argv[2])
- exit_with_usage(pname);
- cols = (int)strtol(argv[2], NULL, 0);
- argv++;
- argc--;
- }
- }
- else if (!STRNCMP(pp, "-g", 2))
- {
- if (!argv[2])
- exit_with_usage(pname);
- octspergrp = (int)strtol(argv[2], NULL, 0);
- argv++;
- argc--;
- }
- else if (!STRNCMP(pp, "-s", 2))
- {
- relseek = 0;
- negseek = 0;
- if (pp[2] && STRNCMP("kip", pp+2, 3) && STRNCMP("eek", pp+2, 3))
- {
- #ifdef TRY_SEEK
- if (pp[2] == '+')
- relseek++;
- if (pp[2+relseek] == '-')
- negseek++;
- #endif
- seekoff = strtol(pp + 2+relseek+negseek, (char **)NULL, 0);
- }
- else
- {
- if (!argv[2])
- exit_with_usage(pname);
- #ifdef TRY_SEEK
- if (argv[2][0] == '+')
- relseek++;
- if (argv[2][relseek] == '-')
- negseek++;
- #endif
- seekoff = strtol(argv[2] + relseek+negseek, (char **)NULL, 0);
- argv++;
- argc--;
- }
- }
- else if (!STRNCMP(pp, "-l", 2))
- {
- if (pp[2] && STRNCMP("en", pp + 2, 2))
- length = strtol(pp + 2, (char **)NULL, 0);
- else
- {
- if (!argv[2])
- exit_with_usage(pname);
- length = strtol(argv[2], (char **)NULL, 0);
- argv++;
- argc--;
- }
- }
- else if (!strcmp(pp, "--")) /* end of options */
- {
- argv++;
- argc--;
- break;
- }
- else if (pp[0] == '-' && pp[1]) /* unknown option */
- exit_with_usage(pname);
- else
- break; /* not an option */
- argv++; /* advance to next argument */
- argc--;
- }
- if (!cols)
- switch (hextype)
- {
- case HEX_POSTSCRIPT: cols = 30; break;
- case HEX_CINCLUDE: cols = 12; break;
- case HEX_NORMAL:
- default: cols = 16; break;
- }
- if (cols < 1 || (!hextype && (cols > COLS)))
- {
- fprintf(stderr, "%s: invalid number of columns (max. %d).n", pname, COLS);
- exit(1);
- }
- if (octspergrp < 1)
- octspergrp = cols;
- if (argc > 3)
- exit_with_usage(pname);
- if (argc == 1 || (argv[1][0] == '-' && !argv[1][1]))
- BIN_ASSIGN(fp = stdin, !revert);
- else
- {
- if ((fp = fopen(argv[1], BIN_READ(!revert))) == NULL)
- {
- fprintf(stderr,"%s: ", pname);
- perror(argv[1]);
- return 2;
- }
- }
- if (argc < 3 || (argv[2][0] == '-' && !argv[2][1]))
- BIN_ASSIGN(fpo = stdout, revert);
- else
- {
- int fd;
- if (((fd = OPEN(argv[2], O_WRONLY | BIN_CREAT(revert), 0666)) < 0) ||
- (fpo = fdopen(fd, BIN_WRITE(revert))) == NULL)
- {
- fprintf(stderr, "%s: ", pname);
- perror(argv[2]);
- return 3;
- }
- rewind(fpo);
- }
- if (revert)
- {
- if (hextype && (hextype != HEX_POSTSCRIPT))
- {
- fprintf(stderr, "%s: sorry, cannot revert this type of hexdumpn", pname);
- return -1;
- }
- return huntype(fp, fpo, stderr, pname, cols, hextype,
- negseek ? -seekoff : seekoff);
- }
- if (seekoff || negseek || !relseek)
- {
- #ifdef TRY_SEEK
- if (relseek)
- e = fseek(fp, negseek ? -seekoff : seekoff, 1);
- else
- e = fseek(fp, negseek ? -seekoff : seekoff, negseek ? 2 : 0);
- if (e < 0 && negseek)
- {
- fprintf(stderr, "%s: sorry cannot seek.n", pname);
- return 4;
- }
- if (e >= 0)
- seekoff = ftell(fp);
- else
- #endif
- {
- long s = seekoff;
- while (s--)
- getc(fp);
- }
- }
- if (hextype == HEX_CINCLUDE)
- {
- if (fp != stdin)
- {
- fprintf(fpo, "unsigned char %s", isdigit(argv[1][0]) ? "__" : "");
- for (e = 0; (c = argv[1][e]) != 0; e++)
- putc(isalnum(c) ? c : '_', fpo);
- fputs("[] = {n", fpo);
- }
- p = 0;
- while ((length < 0 || p < length) && (c = getc(fp)) != EOF)
- {
- fprintf(fpo, (hexx == hexxa) ? "%s0x%02x" : "%s0X%02X",
- (p % cols) ? ", " : ",n "+2*!p, c);
- p++;
- }
- if (p)
- fputs("n};n"+3*(fp == stdin), fpo);
- if (fp != stdin)
- {
- fprintf(fpo, "unsigned int %s", isdigit(argv[1][0]) ? "__" : "");
- for (e = 0; (c = argv[1][e]) != 0; e++)
- putc(isalnum(c) ? c : '_', fpo);
- fprintf(fpo, "_len = %d;n", p);
- }
- fclose(fp);
- fclose(fpo);
- return 0;
- }
- if (hextype == HEX_POSTSCRIPT)
- {
- p = cols;
- while ((length < 0 || n < length) && (e = getc(fp)) != EOF)
- {
- putchar(hexx[(e >> 4) & 0xf]);
- putchar(hexx[(e ) & 0xf]);
- n++;
- if (!--p)
- {
- putchar('n');
- p = cols;
- }
- }
- if (p < cols)
- putchar('n');
- fclose(fp);
- fclose(fpo);
- return 0;
- }
- /* hextype == HEX_NORMAL */
- grplen = octspergrp + octspergrp + 1; /* chars per octet group */
- while ((length < 0 || n < length) && (e = getc(fp)) != EOF)
- {
- if (p == 0)
- {
- sprintf(l, "%07lx: ", n + seekoff);
- for (c = 9; c < LLEN; l[c++] = ' ');
- }
- l[c = (9 + (grplen * p) / octspergrp)] = hexx[(e >> 4) & 0xf];
- l[++c] = hexx[ e & 0xf];
- if (ebcdic)
- e = (e < 64) ? '.' : etoa64[e-64];
- l[11 + (grplen * cols - 1)/octspergrp + p] = (e > 31 && e < 127) ? e : '.';
- if (e)
- nonzero++;
- n++;
- if (++p == cols)
- {
- l[c = (11 + (grplen * cols - 1)/octspergrp + p)] = 'n'; l[++c] = ' ';
- xxdline(fpo, l, autoskip ? nonzero : 1);
- nonzero = 0;
- p = 0;
- }
- }
- if (p)
- {
- l[c = (11 + (grplen * cols - 1)/octspergrp + p)] = 'n'; l[++c] = ' ';
- xxdline(fpo, l, 1);
- }
- else if (autoskip)
- xxdline(fpo, l, -1); /* last chance to flush out supressed lines */
- fclose(fp);
- fclose(fpo);
- return 0;
- }