ref: 13a0cd269f19b10a1327c13c89db56fb6945e7da
dir: /xxd/xxd.c/
/* 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
* ([email protected])
* 22.05.97 added -g (group octets) option ([email protected]).
* 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
*
* (c) 1990-1998 by Juergen Weigert ([email protected])
*
* 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
#include <stdio.h>
#ifdef VAXC
# include <file.h>
#else
# include <fcntl.h>
#endif
#ifdef __TSC__
# define MSDOS
#endif
#if !defined(OS2) && defined(__EMX__)
# define OS2
#endif
#if defined(MSDOS) || defined(WIN32) || defined(OS2) || defined(__BORLANDC__)
# 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(BEBOX)
# include <unix.h> /* for fdopen() on MAC */
#endif
#if defined(__BORLANDC__) && __BORLANDC__ <= 0x0410 && !defined(fileno)
/* Missing define and prototype grabbed from the BC 4.0 <stdio.h> */
# define fileno(f) ((f)->fd)
FILE _FAR *_Cdecl _FARFUNC fdopen(int __handle, char _FAR *__type);
#endif
/* This corrects the problem of missing prototypes for certain functions
* in some GNU installations (e.g. SunOS 4.1.x).
* Darren Hiebert <[email protected]> (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
# ifdef DJGPP
char osver[] = " (dos 32 bit)";
# else
# ifdef MSDOS
char osver[] = " (dos 16 bit)";
# else
char osver[] = "";
# endif
# endif
#endif
#if !defined(CYGWIN) && (defined(CYGWIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__))
# define CYGWIN
#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 '\\'
#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(MSDOS) || defined(WIN32) || defined(OS2) \
|| defined(__BORLANDC__)
# 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 + (5*COLS-1)/2 + 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
#define HEX_BITS 3 /* not hex a dump, but bits: 01111001 */
static void
exit_with_usage(pname)
char *pname;
{
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 -p,-i,-r). Default hex.\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 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, " -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;
#if 0 /* this doesn't work when there is normal text after the hex codes in
the last line that looks like hex */
if (c == ' ' || c == '\n' || c == '\t') /* allow multiple spaces */
continue;
#endif
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) && !hextype)
{
/* skip rest of line as garbage */
want_off = 0;
while ((c = getc(fpi)) != '\n' && c != EOF)
;
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)
;
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 = -1; /* 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;
#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, "-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%s\n", 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 (pp[2] && STRNCMP("group", pp + 2, 5))
octspergrp = (int)strtol(pp + 2, NULL, 0);
else
{
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_BITS: cols = 6; break;
case HEX_NORMAL:
default: cols = 16; break;
}
if (octspergrp < 0)
switch (hextype)
{
case HEX_BITS: octspergrp = 1; break;
case HEX_NORMAL: octspergrp = 2; break;
case HEX_POSTSCRIPT:
case HEX_CINCLUDE:
default: octspergrp = 0; 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;
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, 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--)
(void)getc(fp);
}
}
if (hextype == HEX_CINCLUDE)
{
if (fp != stdin)
{
fprintf(fpo, "unsigned char %s", isdigit((int)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((int)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 or HEX_BITS */
if (hextype == HEX_NORMAL)
grplen = octspergrp + octspergrp + 1; /* chars per octet group */
else /* hextype == HEX_BITS */
grplen = 8 * octspergrp + 1;
while ((length < 0 || n < length) && (e = getc(fp)) != EOF)
{
if (p == 0)
{
sprintf(l, "%07lx: ", n + seekoff);
for (c = 9; c < LLEN; l[c++] = ' ');
}
if (hextype == HEX_NORMAL)
{
l[c = (9 + (grplen * p) / octspergrp)] = hexx[(e >> 4) & 0xf];
l[++c] = hexx[ e & 0xf];
}
else /* hextype == HEX_BITS */
{
int i;
c = (9 + (grplen * p) / octspergrp) - 1;
for (i = 7; i >= 0; i--)
l[++c] = (e & (1 << i)) ? '1' : '0';
}
if (ebcdic)
e = (e < 64) ? '.' : etoa64[e-64];
l[11 + (grplen * cols - 1)/octspergrp + p] =
#ifdef __MVS__
(e >= 64)
#else
(e > 31 && e < 127)
#endif
? e : '.';
if (e)
nonzero++;
n++;
if (++p == cols)
{
l[c = (11 + (grplen * cols - 1)/octspergrp + p)] = '\n'; l[++c] = '\0';
xxdline(fpo, l, autoskip ? nonzero : 1);
nonzero = 0;
p = 0;
}
}
if (p)
{
l[c = (11 + (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 */
fclose(fp);
fclose(fpo);
return 0;
}