/* 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 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 * (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. * * (c) 1990-1998 by Juergen Weigert (jnweiger@informatik.uni-erlangen.de) * * I hereby grant permission to distribute and use xxd * under X11-MIT or GPL-2.0 (at the user's choice). * * Small changes made afterwards by Bram Moolenaar et al. * * Distribute freely and credit me, * make money and share with me, * lose money and don't ask me. */ /* 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 #include #ifdef VAXC # include #else # include #endif #if defined(WIN32) || defined(CYGWIN) # include /* for setmode() */ #else # ifdef UNIX # include # endif #endif #include #include /* for strncmp() */ #include /* for isalnum() */ #include #if __MWERKS__ && !defined(BEBOX) # include /* 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 (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 extern long int strtol(); extern long int ftell(); char version[] = "xxd V1.10 27oct98 by Juergen Weigert"; #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 /* Let's collect some prototypes */ /* CodeWarrior is really picky about missing prototypes */ static void exit_with_usage __P((void)); static void die __P((int)); static int huntype __P((FILE *, FILE *, FILE *, 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 ((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 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 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 octets.\n"); fprintf(stderr, " -o off add 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 added to file positions found in hexdump.\n"); fprintf(stderr, " -s %sseek start at 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 die(int ret) { fprintf(stderr, "%s: ", pname); perror(NULL); exit(ret); } /* * 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, FILE *fperr, 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; 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) { if (fflush(fpo) != 0) die(3); #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++) if (putc(0, fpo) == EOF) die(3); } if (n2 >= 0 && n1 >= 0) { if (putc((n2 << 4) | n1, fpo) == EOF) die(3); have_off++; want_off++; n1 = -1; if ((++p >= cols) && !hextype) { /* skip rest of line as garbage */ want_off = 0; while ((c = getc(fpi)) != '\n' && c != EOF) ; if (c == EOF && ferror(fpi)) die(2); ign_garb = 1; } } else if (n1 < 0 && n2 < 0 && n3 < 0) { /* already stumbled into garbage, skip line, wait and see */ if (!hextype) want_off = 0; while ((c = getc(fpi)) != '\n' && c != EOF) ; if (c == EOF && ferror(fpi)) die(2); ign_garb = 1; } } if (fflush(fpo) != 0) die(3); #ifdef TRY_SEEK fseek(fpo, 0L, 2); #endif if (fclose(fpo) != 0) die(3); if (fclose(fpi) != 0) die(2); 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) if (fputs(z, fp) == EOF) die(3); if (zero_seen > 2) if (fputs("*\n", fp) == EOF) die(3); } if (nz >= 0 || zero_seen > 0) if (fputs(l, fp) == EOF) die(3); 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, nonzero = 0, autoskip = 0, hextype = HEX_NORMAL, capitalize = 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; 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, "-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)) cols = (int)strtol(pp + 2, NULL, 0); else { if (!argv[2]) exit_with_usage(); 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 (!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 (!cols) 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 (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))) { fprintf(stderr, "%s: number of octets per group must be a power of 2 with -e.\n", pname); exit(1); } 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)) { fprintf(stderr, "%s: sorry, cannot revert this type of hexdump\n", pname); return -1; } return huntype(fp, fpo, stderr, 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--) if (getc(fp) == EOF) { if (ferror(fp)) { die(2); } else { fprintf(stderr, "%s: sorry cannot seek.\n", pname); return 4; } } } } if (hextype == HEX_CINCLUDE) { if (fp != stdin) { if (fprintf(fpo, "unsigned char %s", isdigit((int)argv[1][0]) ? "__" : "") < 0) die(3); for (e = 0; (c = argv[1][e]) != 0; e++) if (putc(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo) == EOF) die(3); if (fputs("[] = {\n", fpo) == EOF) die(3); } p = 0; c = 0; while ((length < 0 || p < length) && (c = getc(fp)) != EOF) { if (fprintf(fpo, (hexx == hexxa) ? "%s0x%02x" : "%s0X%02X", (p % cols) ? ", " : &",\n "[2*!p], c) < 0) die(3); p++; } if (c == EOF && ferror(fp)) die(2); if (p && fputs("\n", fpo) == EOF) die(3); if (fputs(&"};\n"[3 * (fp == stdin)], fpo) == EOF) die(3); if (fp != stdin) { if (fprintf(fpo, "unsigned int %s", isdigit((int)argv[1][0]) ? "__" : "") < 0) die(3); for (e = 0; (c = argv[1][e]) != 0; e++) if (putc(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo) == EOF) die(3); if (fprintf(fpo, "_%s = %d;\n", capitalize ? "LEN" : "len", p) < 0) die(3); } if (fclose(fp)) die(2); if (fclose(fpo)) die(3); return 0; } if (hextype == HEX_POSTSCRIPT) { p = cols; e = 0; while ((length < 0 || n < length) && (e = getc(fp)) != EOF) { if (putc(hexx[(e >> 4) & 0xf], fpo) == EOF || putc(hexx[e & 0xf], fpo) == EOF) die(3); n++; if (!--p) { if (putc('\n', fpo) == EOF) die(3); p = cols; } } if (e == EOF && ferror(fp)) die(2); if (p < cols) if (putc('\n', fpo) == EOF) die(3); if (fclose(fp)) die(2); if (fclose(fpo)) die(3); 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; e = 0; while ((length < 0 || n < length) && (e = getc(fp)) != EOF) { if (p == 0) { addrlen = sprintf(l, "%08lx:", ((unsigned long)(n + seekoff + displayoff))); for (c = addrlen; c < LLEN; l[c++] = ' '); } if (hextype == HEX_NORMAL) { l[c = (addrlen + 1 + (grplen * p) / octspergrp)] = hexx[(e >> 4) & 0xf]; l[++c] = hexx[ e & 0xf]; } else if (hextype == HEX_LITTLEENDIAN) { int x = p ^ (octspergrp-1); l[c = (addrlen + 1 + (grplen * x) / octspergrp)] = hexx[(e >> 4) & 0xf]; l[++c] = hexx[ e & 0xf]; } else /* hextype == HEX_BITS */ { int i; c = (addrlen + 1 + (grplen * p) / octspergrp) - 1; 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. */ l[addrlen + 3 + (grplen * cols - 1)/octspergrp + p] = #ifdef __MVS__ (e >= 64) #else (e > 31 && e < 127) #endif ? e : '.'; n++; if (++p == cols) { l[c = (addrlen + 3 + (grplen * cols - 1)/octspergrp + p)] = '\n'; l[++c] = '\0'; xxdline(fpo, l, autoskip ? nonzero : 1); nonzero = 0; p = 0; } } if (e == EOF && ferror(fp)) die(2); if (p) { l[c = (addrlen + 3 + (grplen * cols - 1)/octspergrp + p)] = '\n'; l[++c] = '\0'; xxdline(fpo, l, 1); } else if (autoskip) xxdline(fpo, l, -1); /* last chance to flush out suppressed lines */ if (fclose(fp)) die(2); if (fclose(fpo)) die(3); return 0; } /* vi:set ts=8 sw=4 sts=2 cino+={2 cino+=n-2 : */