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Diffstat (limited to 'src/xxd/xxd.c')
| -rw-r--r-- | src/xxd/xxd.c | 891 |
1 files changed, 891 insertions, 0 deletions
diff --git a/src/xxd/xxd.c b/src/xxd/xxd.c new file mode 100644 index 0000000..2105a1c --- /dev/null +++ b/src/xxd/xxd.c @@ -0,0 +1,891 @@ +/* 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 + * consecutive 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 '\0' 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 silent. + * 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 + * (azc10@yahoo.com) + * 22.05.97 added -g (group octets) option (jcook@namerica.kla.com). + * 23.09.98 nasty -p -r misfeature fixed: slightly wrong output, when -c was + * missing or wrong. + * 26.09.98 Fixed: 'xxd -i infile outfile' did not truncate outfile. + * 27.10.98 Fixed: -g option parser required blank. + * option -b added: 01000101 binary output in normal format. + * 16.05.00 Added VAXC changes by Stephen P. Wall + * 16.05.00 Improved MMS file and merge for VMS by Zoltan Arpadffy + * 2011 March Better error handling by Florian Zumbiehl. + * 2011 April Formatting by Bram Moolenaar + * 08.06.2013 Little-endian hexdump (-e) and offset (-o) by Vadim Vygonets. + * 11.01.2019 Add full 64/32 bit range to -o and output by Christer Jensen. + * 04.02.2020 Add -d for decimal offsets by Aapo Rantalainen + * 14.01.2022 Disable extra newlines with -c0 -p by Erik Auerswald. + * 20.06.2022 Permit setting the variable names used by -i by David Gow + * + * (c) 1990-1998 by Juergen Weigert (jnweiger@gmail.com) + * + * I hereby grant permission to distribute and use xxd + * under X11-MIT or GPL-2.0 (at the user's choice). + * + * Contributions by Bram Moolenaar et al. + */ + +/* Visual Studio 2005 has 'deprecated' many of the standard CRT functions */ +#if _MSC_VER >= 1400 +# define _CRT_SECURE_NO_DEPRECATE +# define _CRT_NONSTDC_NO_DEPRECATE +#endif +#if !defined(CYGWIN) && defined(__CYGWIN__) +# define CYGWIN +#endif + +#if (defined(__linux__) && !defined(__ANDROID__)) || defined(__CYGWIN__) +# define _XOPEN_SOURCE 700 /* for fdopen() */ +#endif + +#include <stdio.h> +#ifdef VAXC +# include <file.h> +#else +# include <fcntl.h> +#endif +#if defined(WIN32) || defined(CYGWIN) +# 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() */ +#include <limits.h> +#if __MWERKS__ && !defined(BEBOX) +# 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). + * Darren Hiebert <darren@hmi.com> (sparc-sun-sunos4.1.3_U1/2.7.2.2) + */ +#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 + +char version[] = "xxd 2022-01-14 by Juergen Weigert et al."; +#ifdef WIN32 +char osver[] = " (Win32)"; +#else +char osver[] = ""; +#endif + +#if defined(WIN32) +# 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 '\\' +#elif defined(CYGWIN) +# define BIN_READ(yes) ((yes) ? "rb" : "rt") +# define BIN_WRITE(yes) ((yes) ? "wb" : "w") +# define BIN_CREAT(yes) ((yes) ? (O_CREAT|O_BINARY) : O_CREAT) +# define BIN_ASSIGN(fp, yes) ((yes) ? (void) setmode(fileno(fp), O_BINARY) : (void) (fp)) +# define PATH_SEP '/' +#else +# ifdef VMS +# 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 ']' +# define FILE_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 +#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 +# if defined(__STDC__) || defined(WIN32) +# define __P(a) a +# else +# define __P(a) () +# endif +#endif + +#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 ((2*(int)sizeof(unsigned long)) + 4 + (9*COLS-1) + COLS + 2) + +char hexxa[] = "0123456789abcdef0123456789ABCDEF", *hexx = hexxa; + +/* the different hextypes known by this program: */ +#define HEX_NORMAL 0 +#define HEX_POSTSCRIPT 1 +#define HEX_CINCLUDE 2 +#define HEX_BITS 3 /* not hex a dump, but bits: 01111001 */ +#define HEX_LITTLEENDIAN 4 + +#define CONDITIONAL_CAPITALIZE(c) (capitalize ? toupper((int)c) : c) + +static char *pname; + + static void +exit_with_usage(void) +{ + fprintf(stderr, "Usage:\n %s [options] [infile [outfile]]\n", pname); + fprintf(stderr, " or\n %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, " -b binary digit dump (incompatible with -ps,-i,-r). Default hex.\n"); + fprintf(stderr, " -C capitalize variable names in C include file style (-i).\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, " -e little-endian dump (incompatible with -ps,-i,-r).\n"); + fprintf(stderr, " -g bytes number of octets per group in normal output. Default 2 (-e: 4).\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, " -n name set the variable name used in C include output (-i).\n"); + fprintf(stderr, " -o off add <off> to the displayed file position.\n"); + fprintf(stderr, " -ps output in postscript plain 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, " -d show offset in decimal instead of hex.\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); +} + + static void +perror_exit(int ret) +{ + fprintf(stderr, "%s: ", pname); + perror(NULL); + exit(ret); +} + + static void +error_exit(int ret, char *msg) +{ + fprintf(stderr, "%s: %s\n", pname, msg); + exit(ret); +} + + static int +getc_or_die(FILE *fpi) +{ + int c = getc(fpi); + if (c == EOF && ferror(fpi)) + perror_exit(2); + return c; +} + + static void +putc_or_die(int c, FILE *fpo) +{ + if (putc(c, fpo) == EOF) + perror_exit(3); +} + + static void +fputs_or_die(char *s, FILE *fpo) +{ + if (fputs(s, fpo) == EOF) + perror_exit(3); +} + +/* Use a macro to allow for different arguments. */ +#define FPRINTF_OR_DIE(args) if (fprintf args < 0) perror_exit(3) + + static void +fclose_or_die(FILE *fpi, FILE *fpo) +{ + if (fclose(fpo) != 0) + perror_exit(3); + if (fclose(fpi) != 0) + perror_exit(2); +} + +/* + * If "c" is a hex digit, return the value. + * Otherwise return -1. + */ + static int +parse_hex_digit(int c) +{ + return (c >= '0' && c <= '9') ? c - '0' + : (c >= 'a' && c <= 'f') ? c - 'a' + 10 + : (c >= 'A' && c <= 'F') ? c - 'A' + 10 + : -1; +} + +/* + * Ignore text on "fpi" until end-of-line or end-of-file. + * Return the '\n' or EOF character. + * When an error is encountered exit with an error message. + */ + static int +skip_to_eol(FILE *fpi, int c) +{ + while (c != '\n' && c != EOF) + c = getc_or_die(fpi); + return c; +} + +/* + * 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( + FILE *fpi, + FILE *fpo, + int cols, + int 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; + + /* Allow multiple spaces. This doesn't work when there is normal text + * after the hex codes in the last line that looks like hex, thus only + * use it for PostScript format. */ + if (hextype == HEX_POSTSCRIPT && (c == ' ' || c == '\n' || c == '\t')) + continue; + + n3 = n2; + n2 = n1; + + n1 = parse_hex_digit(c); + if (n1 == -1 && ign_garb) + continue; + + ign_garb = 0; + + if (!hextype && (p >= cols)) + { + if (n1 < 0) + { + p = 0; + continue; + } + want_off = (want_off << 4) | n1; + continue; + } + + if (base_off + want_off != have_off) + { + if (fflush(fpo) != 0) + perror_exit(3); +#ifdef TRY_SEEK + if (fseek(fpo, base_off + want_off - have_off, SEEK_CUR) >= 0) + have_off = base_off + want_off; +#endif + if (base_off + want_off < have_off) + error_exit(5, "Sorry, cannot seek backwards."); + for (; have_off < base_off + want_off; have_off++) + putc_or_die(0, fpo); + } + + if (n2 >= 0 && n1 >= 0) + { + putc_or_die((n2 << 4) | n1, fpo); + have_off++; + want_off++; + n1 = -1; + if (!hextype && (++p >= cols)) + /* skip the rest of the line as garbage */ + c = skip_to_eol(fpi, c); + } + else if (n1 < 0 && n2 < 0 && n3 < 0) + /* already stumbled into garbage, skip line, wait and see */ + c = skip_to_eol(fpi, c); + + if (c == '\n') + { + if (!hextype) + want_off = 0; + p = cols; + ign_garb = 1; + } + } + if (fflush(fpo) != 0) + perror_exit(3); +#ifdef TRY_SEEK + fseek(fpo, 0L, SEEK_END); +#endif + fclose_or_die(fpi, fpo); + 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(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_or_die(z, fp); + if (zero_seen > 2) + fputs_or_die("*\n", fp); + } + if (nz >= 0 || zero_seen > 0) + fputs_or_die(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(int argc, char *argv[]) +{ + FILE *fp, *fpo; + int c, e, p = 0, relseek = 1, negseek = 0, revert = 0; + int cols = 0, colsgiven = 0, nonzero = 0, autoskip = 0, hextype = HEX_NORMAL; + int capitalize = 0, decimal_offset = 0; + int ebcdic = 0; + int octspergrp = -1; /* number of octets grouped in output */ + int grplen; /* total chars per octet group */ + long length = -1, n = 0, seekoff = 0; + unsigned long displayoff = 0; + static char l[LLEN+1]; /* static because it may be too big for stack */ + char *pp; + char *varname = NULL; + int addrlen = 9; + +#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; +#ifdef FILE_SEP + for (pp = pname; *pp; pp++) + if (*pp == FILE_SEP) + { + *pp = '\0'; + break; + } +#endif + + 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, "-b", 2)) hextype = HEX_BITS; + else if (!STRNCMP(pp, "-e", 2)) hextype = HEX_LITTLEENDIAN; + 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, "-C", 2)) capitalize = 1; + else if (!STRNCMP(pp, "-d", 2)) decimal_offset = 1; + else if (!STRNCMP(pp, "-r", 2)) revert++; + else if (!STRNCMP(pp, "-E", 2)) ebcdic++; + else if (!STRNCMP(pp, "-v", 2)) + { + fprintf(stderr, "%s%s\n", version, osver); + exit(0); + } + else if (!STRNCMP(pp, "-c", 2)) + { + if (pp[2] && !STRNCMP("apitalize", pp + 2, 9)) + capitalize = 1; + else if (pp[2] && STRNCMP("ols", pp + 2, 3)) + { + colsgiven = 1; + cols = (int)strtol(pp + 2, NULL, 0); + } + else + { + if (!argv[2]) + exit_with_usage(); + colsgiven = 1; + cols = (int)strtol(argv[2], NULL, 0); + argv++; + argc--; + } + } + else if (!STRNCMP(pp, "-g", 2)) + { + if (pp[2] && STRNCMP("roup", pp + 2, 4)) + octspergrp = (int)strtol(pp + 2, NULL, 0); + else + { + if (!argv[2]) + exit_with_usage(); + octspergrp = (int)strtol(argv[2], NULL, 0); + argv++; + argc--; + } + } + else if (!STRNCMP(pp, "-o", 2)) + { + int reloffset = 0; + int negoffset = 0; + if (pp[2] && STRNCMP("ffset", pp + 2, 5)) + displayoff = strtoul(pp + 2, NULL, 0); + else + { + if (!argv[2]) + exit_with_usage(); + + if (argv[2][0] == '+') + reloffset++; + if (argv[2][reloffset] == '-') + negoffset++; + + if (negoffset) + displayoff = ULONG_MAX - strtoul(argv[2] + reloffset+negoffset, NULL, 0) + 1; + else + displayoff = strtoul(argv[2] + reloffset+negoffset, 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(); +#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(); + length = strtol(argv[2], (char **)NULL, 0); + argv++; + argc--; + } + } + else if (!STRNCMP(pp, "-n", 2)) + { + if (pp[2] && STRNCMP("ame", pp + 2, 3)) + varname = pp + 2; + else + { + if (!argv[2]) + exit_with_usage(); + varname = argv[2]; + argv++; + argc--; + } + } + else if (!strcmp(pp, "--")) /* end of options */ + { + argv++; + argc--; + break; + } + else if (pp[0] == '-' && pp[1]) /* unknown option */ + exit_with_usage(); + else + break; /* not an option */ + + argv++; /* advance to next argument */ + argc--; + } + + if (!colsgiven || (!cols && hextype != HEX_POSTSCRIPT)) + switch (hextype) + { + case HEX_POSTSCRIPT: cols = 30; break; + case HEX_CINCLUDE: cols = 12; break; + case HEX_BITS: cols = 6; break; + case HEX_NORMAL: + case HEX_LITTLEENDIAN: + default: cols = 16; break; + } + + if (octspergrp < 0) + switch (hextype) + { + case HEX_BITS: octspergrp = 1; break; + case HEX_NORMAL: octspergrp = 2; break; + case HEX_LITTLEENDIAN: octspergrp = 4; break; + case HEX_POSTSCRIPT: + case HEX_CINCLUDE: + default: octspergrp = 0; break; + } + + if ((hextype == HEX_POSTSCRIPT && cols < 0) || + (hextype != HEX_POSTSCRIPT && cols < 1) || + ((hextype == HEX_NORMAL || hextype == HEX_BITS || hextype == HEX_LITTLEENDIAN) + && (cols > COLS))) + { + fprintf(stderr, "%s: invalid number of columns (max. %d).\n", pname, COLS); + exit(1); + } + + if (octspergrp < 1 || octspergrp > cols) + octspergrp = cols; + else if (hextype == HEX_LITTLEENDIAN && (octspergrp & (octspergrp-1))) + error_exit(1, "number of octets per group must be a power of 2 with -e."); + + if (argc > 3) + exit_with_usage(); + + 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; + int mode = revert ? O_WRONLY : (O_TRUNC|O_WRONLY); + + if (((fd = OPEN(argv[2], mode | 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)) + error_exit(-1, "Sorry, cannot revert this type of hexdump"); + return huntype(fp, fpo, cols, hextype, + negseek ? -seekoff : seekoff); + } + + if (seekoff || negseek || !relseek) + { +#ifdef TRY_SEEK + if (relseek) + e = fseek(fp, negseek ? -seekoff : seekoff, SEEK_CUR); + else + e = fseek(fp, negseek ? -seekoff : seekoff, + negseek ? SEEK_END : SEEK_SET); + if (e < 0 && negseek) + error_exit(4, "Sorry, cannot seek."); + if (e >= 0) + seekoff = ftell(fp); + else +#endif + { + long s = seekoff; + + while (s--) + if (getc_or_die(fp) == EOF) + { + error_exit(4, "Sorry, cannot seek."); + } + } + } + + if (hextype == HEX_CINCLUDE) + { + /* A user-set variable name overrides fp == stdin */ + if (varname == NULL && fp != stdin) + varname = argv[1]; + + if (varname != NULL) + { + FPRINTF_OR_DIE((fpo, "unsigned char %s", isdigit((int)varname[0]) ? "__" : "")); + for (e = 0; (c = varname[e]) != 0; e++) + putc_or_die(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo); + fputs_or_die("[] = {\n", fpo); + } + + p = 0; + while ((length < 0 || p < length) && (c = getc_or_die(fp)) != EOF) + { + FPRINTF_OR_DIE((fpo, (hexx == hexxa) ? "%s0x%02x" : "%s0X%02X", + (p % cols) ? ", " : (!p ? " " : ",\n "), c)); + p++; + } + + if (p) + fputs_or_die("\n", fpo); + + if (varname != NULL) + { + fputs_or_die("};\n", fpo); + FPRINTF_OR_DIE((fpo, "unsigned int %s", isdigit((int)varname[0]) ? "__" : "")); + for (e = 0; (c = varname[e]) != 0; e++) + putc_or_die(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo); + FPRINTF_OR_DIE((fpo, "_%s = %d;\n", capitalize ? "LEN" : "len", p)); + } + + fclose_or_die(fp, fpo); + return 0; + } + + if (hextype == HEX_POSTSCRIPT) + { + p = cols; + while ((length < 0 || n < length) && (e = getc_or_die(fp)) != EOF) + { + putc_or_die(hexx[(e >> 4) & 0xf], fpo); + putc_or_die(hexx[e & 0xf], fpo); + n++; + if (cols > 0 && !--p) + { + putc_or_die('\n', fpo); + p = cols; + } + } + if (cols == 0 || p < cols) + putc_or_die('\n', fpo); + fclose_or_die(fp, fpo); + return 0; + } + + /* hextype: HEX_NORMAL or HEX_BITS or HEX_LITTLEENDIAN */ + + if (hextype != HEX_BITS) + grplen = octspergrp + octspergrp + 1; /* chars per octet group */ + else /* hextype == HEX_BITS */ + grplen = 8 * octspergrp + 1; + + while ((length < 0 || n < length) && (e = getc_or_die(fp)) != EOF) + { + int x; + + if (p == 0) + { + addrlen = sprintf(l, decimal_offset ? "%08ld:" : "%08lx:", + ((unsigned long)(n + seekoff + displayoff))); + for (c = addrlen; c < LLEN; l[c++] = ' '); + } + x = hextype == HEX_LITTLEENDIAN ? p ^ (octspergrp-1) : p; + c = addrlen + 1 + (grplen * x) / octspergrp; + if (hextype == HEX_NORMAL || hextype == HEX_LITTLEENDIAN) + { + l[c] = hexx[(e >> 4) & 0xf]; + l[++c] = hexx[e & 0xf]; + } + else /* hextype == HEX_BITS */ + { + int i; + for (i = 7; i >= 0; i--) + l[c++] = (e & (1 << i)) ? '1' : '0'; + } + if (e) + nonzero++; + if (ebcdic) + e = (e < 64) ? '.' : etoa64[e-64]; + /* When changing this update definition of LLEN above. */ + c = addrlen + 3 + (grplen * cols - 1)/octspergrp + p; + l[c++] = +#ifdef __MVS__ + (e >= 64) +#else + (e > 31 && e < 127) +#endif + ? e : '.'; + n++; + if (++p == cols) + { + l[c] = '\n'; + l[++c] = '\0'; + xxdline(fpo, l, autoskip ? nonzero : 1); + nonzero = 0; + p = 0; + } + } + if (p) + { + l[c] = '\n'; + l[++c] = '\0'; + xxdline(fpo, l, 1); + } + else if (autoskip) + xxdline(fpo, l, -1); /* last chance to flush out suppressed lines */ + + fclose_or_die(fp, fpo); + return 0; +} + +/* vi:set ts=8 sw=4 sts=2 cino+={2 cino+=n-2 : */ |