Mercurial > vim
annotate src/xxd/xxd.c @ 26278:3061c07855ce v8.2.3670
patch 8.2.3670: error checks repeated several times
Commit: https://github.com/vim/vim/commit/8af87bd6b1808ffcafdd73b1d7501dd50b9d15bc
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Nov 25 11:16:50 2021 +0000
patch 8.2.3670: error checks repeated several times
Problem: Error checks repeated several times.
Solution: Move the checks to functions. (closes https://github.com/vim/vim/issues/9213)
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Thu, 25 Nov 2021 12:30:04 +0100 |
parents | 3a13efec0016 |
children | 71bdede8afd8 |
rev | line source |
---|---|
7 | 1 /* xxd: my hexdump facility. jw |
2 * | |
3 * 2.10.90 changed to word output | |
4 * 3.03.93 new indent style, dumb bug inserted and fixed. | |
5 * -c option, mls | |
6 * 26.04.94 better option parser, -ps, -l, -s added. | |
7 * 1.07.94 -r badly needs - as input file. Per default autoskip over | |
1197 | 8 * consecutive lines of zeroes, as unix od does. |
7 | 9 * -a shows them too. |
10 * -i dump as c-style #include "file.h" | |
11 * 1.11.95 if "xxd -i" knows the filename, an 'unsigned char filename_bits[]' | |
12 * array is written in correct c-syntax. | |
13 * -s improved, now defaults to absolute seek, relative requires a '+'. | |
14 * -r improved, now -r -s -0x... is supported. | |
15 * change/suppress leading '\0' bytes. | |
16 * -l n improved: stops exactly after n bytes. | |
17 * -r improved, better handling of partial lines with trailing garbage. | |
18 * -r improved, now -r -p works again! | |
19 * -r improved, less flushing, much faster now! (that was silly) | |
20 * 3.04.96 Per repeated request of a single person: autoskip defaults to off. | |
21 * 15.05.96 -v added. They want to know the version. | |
22 * -a fixed, to show last line inf file ends in all zeros. | |
23 * -u added: Print upper case hex-letters, as preferred by unix bc. | |
24 * -h added to usage message. Usage message extended. | |
25 * Now using outfile if specified even in normal mode, aehem. | |
26 * No longer mixing of ints and longs. May help doze people. | |
27 * Added binify ioctl for same reason. (Enough Doze stress for 1996!) | |
28 * 16.05.96 -p improved, removed occasional superfluous linefeed. | |
29 * 20.05.96 -l 0 fixed. tried to read anyway. | |
30 * 21.05.96 -i fixed. now honours -u, and prepends __ to numeric filenames. | |
31 * compile -DWIN32 for NT or W95. George V. Reilly, * -v improved :-) | |
32 * support --gnuish-longhorn-options | |
33 * 25.05.96 MAC support added: CodeWarrior already uses ``outline'' in Types.h | |
34 * which is included by MacHeaders (Axel Kielhorn). Renamed to | |
35 * xxdline(). | |
36 * 7.06.96 -i printed 'int' instead of 'char'. *blush* | |
37 * added Bram's OS2 ifdefs... | |
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38 * 18.07.96 gcc -Wall @ SunOS4 is now silent. |
7 | 39 * Added osver for MSDOS/DJGPP/WIN32. |
40 * 29.08.96 Added size_t to strncmp() for Amiga. | |
41 * 24.03.97 Windows NT support (Phil Hanna). Clean exit for Amiga WB (Bram) | |
42 * 02.04.97 Added -E option, to have EBCDIC translation instead of ASCII | |
216 | 43 * (azc10@yahoo.com) |
7 | 44 * 22.05.97 added -g (group octets) option (jcook@namerica.kla.com). |
45 * 23.09.98 nasty -p -r misfeature fixed: slightly wrong output, when -c was | |
46 * missing or wrong. | |
47 * 26.09.98 Fixed: 'xxd -i infile outfile' did not truncate outfile. | |
48 * 27.10.98 Fixed: -g option parser required blank. | |
49 * option -b added: 01000101 binary output in normal format. | |
50 * 16.05.00 Added VAXC changes by Stephen P. Wall | |
1197 | 51 * 16.05.00 Improved MMS file and merge for VMS by Zoltan Arpadffy |
2752 | 52 * 2011 March Better error handling by Florian Zumbiehl. |
53 * 2011 April Formatting by Bram Moolenaar | |
6655 | 54 * 08.06.2013 Little-endian hexdump (-e) and offset (-o) by Vadim Vygonets. |
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55 * 11.01.2019 Add full 64/32 bit range to -o and output by Christer Jensen. |
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56 * 04.02.2020 Add -d for decimal offsets by Aapo Rantalainen |
7 | 57 * |
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58 * (c) 1990-1998 by Juergen Weigert (jnweiger@gmail.com) |
7 | 59 * |
6973 | 60 * I hereby grant permission to distribute and use xxd |
61 * under X11-MIT or GPL-2.0 (at the user's choice). | |
62 * | |
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63 * Contributions by Bram Moolenaar et al. |
7 | 64 */ |
714 | 65 |
66 /* Visual Studio 2005 has 'deprecated' many of the standard CRT functions */ | |
67 #if _MSC_VER >= 1400 | |
68 # define _CRT_SECURE_NO_DEPRECATE | |
69 # define _CRT_NONSTDC_NO_DEPRECATE | |
70 #endif | |
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71 #if !defined(CYGWIN) && defined(__CYGWIN__) |
1912 | 72 # define CYGWIN |
73 #endif | |
714 | 74 |
7 | 75 #include <stdio.h> |
76 #ifdef VAXC | |
77 # include <file.h> | |
78 #else | |
79 # include <fcntl.h> | |
80 #endif | |
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81 #if defined(WIN32) || defined(CYGWIN) |
7 | 82 # include <io.h> /* for setmode() */ |
83 #else | |
84 # ifdef UNIX | |
85 # include <unistd.h> | |
86 # endif | |
87 #endif | |
88 #include <stdlib.h> | |
89 #include <string.h> /* for strncmp() */ | |
90 #include <ctype.h> /* for isalnum() */ | |
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91 #include <limits.h> |
7 | 92 #if __MWERKS__ && !defined(BEBOX) |
93 # include <unix.h> /* for fdopen() on MAC */ | |
94 #endif | |
95 | |
96 | |
97 /* This corrects the problem of missing prototypes for certain functions | |
98 * in some GNU installations (e.g. SunOS 4.1.x). | |
99 * Darren Hiebert <darren@hmi.com> (sparc-sun-sunos4.1.3_U1/2.7.2.2) | |
100 */ | |
101 #if defined(__GNUC__) && defined(__STDC__) | |
102 # ifndef __USE_FIXED_PROTOTYPES__ | |
103 # define __USE_FIXED_PROTOTYPES__ | |
104 # endif | |
105 #endif | |
106 | |
107 #ifndef __USE_FIXED_PROTOTYPES__ | |
108 /* | |
109 * This is historic and works only if the compiler really has no prototypes: | |
110 * | |
111 * Include prototypes for Sun OS 4.x, when using an ANSI compiler. | |
112 * FILE is defined on OS 4.x, not on 5.x (Solaris). | |
113 * if __SVR4 is defined (some Solaris versions), don't include this. | |
114 */ | |
115 #if defined(sun) && defined(FILE) && !defined(__SVR4) && defined(__STDC__) | |
116 # define __P(a) a | |
117 /* excerpt from my sun_stdlib.h */ | |
118 extern int fprintf __P((FILE *, char *, ...)); | |
119 extern int fputs __P((char *, FILE *)); | |
120 extern int _flsbuf __P((unsigned char, FILE *)); | |
121 extern int _filbuf __P((FILE *)); | |
122 extern int fflush __P((FILE *)); | |
123 extern int fclose __P((FILE *)); | |
124 extern int fseek __P((FILE *, long, int)); | |
125 extern int rewind __P((FILE *)); | |
126 | |
127 extern void perror __P((char *)); | |
128 # endif | |
129 #endif | |
130 | |
131 extern long int strtol(); | |
132 extern long int ftell(); | |
133 | |
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134 char version[] = "xxd 2021-10-22 by Juergen Weigert et al."; |
7 | 135 #ifdef WIN32 |
136 char osver[] = " (Win32)"; | |
137 #else | |
138 char osver[] = ""; | |
139 #endif | |
140 | |
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141 #if defined(WIN32) |
7 | 142 # define BIN_READ(yes) ((yes) ? "rb" : "rt") |
143 # define BIN_WRITE(yes) ((yes) ? "wb" : "wt") | |
144 # define BIN_CREAT(yes) ((yes) ? (O_CREAT|O_BINARY) : O_CREAT) | |
145 # define BIN_ASSIGN(fp, yes) setmode(fileno(fp), (yes) ? O_BINARY : O_TEXT) | |
602 | 146 # define PATH_SEP '\\' |
147 #elif defined(CYGWIN) | |
148 # define BIN_READ(yes) ((yes) ? "rb" : "rt") | |
149 # define BIN_WRITE(yes) ((yes) ? "wb" : "w") | |
150 # define BIN_CREAT(yes) ((yes) ? (O_CREAT|O_BINARY) : O_CREAT) | |
151 # define BIN_ASSIGN(fp, yes) ((yes) ? (void) setmode(fileno(fp), O_BINARY) : (void) (fp)) | |
152 # define PATH_SEP '/' | |
7 | 153 #else |
154 # ifdef VMS | |
155 # define BIN_READ(dummy) "r" | |
156 # define BIN_WRITE(dummy) "w" | |
157 # define BIN_CREAT(dummy) O_CREAT | |
158 # define BIN_ASSIGN(fp, dummy) fp | |
159 # define PATH_SEP ']' | |
160 # define FILE_SEP '.' | |
161 # else | |
162 # define BIN_READ(dummy) "r" | |
163 # define BIN_WRITE(dummy) "w" | |
164 # define BIN_CREAT(dummy) O_CREAT | |
165 # define BIN_ASSIGN(fp, dummy) fp | |
166 # define PATH_SEP '/' | |
167 # endif | |
168 #endif | |
169 | |
170 /* open has only to arguments on the Mac */ | |
171 #if __MWERKS__ | |
172 # define OPEN(name, mode, umask) open(name, mode) | |
173 #else | |
174 # define OPEN(name, mode, umask) open(name, mode, umask) | |
175 #endif | |
176 | |
177 #ifdef AMIGA | |
178 # define STRNCMP(s1, s2, l) strncmp(s1, s2, (size_t)l) | |
179 #else | |
180 # define STRNCMP(s1, s2, l) strncmp(s1, s2, l) | |
181 #endif | |
182 | |
183 #ifndef __P | |
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184 # if defined(__STDC__) || defined(WIN32) |
7 | 185 # define __P(a) a |
186 # else | |
187 # define __P(a) () | |
188 # endif | |
189 #endif | |
190 | |
191 #define TRY_SEEK /* attempt to use lseek, or skip forward by reading */ | |
192 #define COLS 256 /* change here, if you ever need more columns */ | |
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193 #define LLEN ((2*(int)sizeof(unsigned long)) + 4 + (9*COLS-1) + COLS + 2) |
7 | 194 |
195 char hexxa[] = "0123456789abcdef0123456789ABCDEF", *hexx = hexxa; | |
196 | |
197 /* the different hextypes known by this program: */ | |
198 #define HEX_NORMAL 0 | |
199 #define HEX_POSTSCRIPT 1 | |
200 #define HEX_CINCLUDE 2 | |
201 #define HEX_BITS 3 /* not hex a dump, but bits: 01111001 */ | |
6655 | 202 #define HEX_LITTLEENDIAN 4 |
7 | 203 |
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204 #define CONDITIONAL_CAPITALIZE(c) (capitalize ? toupper((int)c) : c) |
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205 |
2752 | 206 static char *pname; |
207 | |
208 static void | |
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209 exit_with_usage(void) |
7 | 210 { |
211 fprintf(stderr, "Usage:\n %s [options] [infile [outfile]]\n", pname); | |
212 fprintf(stderr, " or\n %s -r [-s [-]offset] [-c cols] [-ps] [infile [outfile]]\n", pname); | |
213 fprintf(stderr, "Options:\n"); | |
214 fprintf(stderr, " -a toggle autoskip: A single '*' replaces nul-lines. Default off.\n"); | |
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215 fprintf(stderr, " -b binary digit dump (incompatible with -ps,-i,-r). Default hex.\n"); |
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216 fprintf(stderr, " -C capitalize variable names in C include file style (-i).\n"); |
7 | 217 fprintf(stderr, " -c cols format <cols> octets per line. Default 16 (-i: 12, -ps: 30).\n"); |
218 fprintf(stderr, " -E show characters in EBCDIC. Default ASCII.\n"); | |
6655 | 219 fprintf(stderr, " -e little-endian dump (incompatible with -ps,-i,-r).\n"); |
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220 fprintf(stderr, " -g bytes number of octets per group in normal output. Default 2 (-e: 4).\n"); |
7 | 221 fprintf(stderr, " -h print this summary.\n"); |
222 fprintf(stderr, " -i output in C include file style.\n"); | |
223 fprintf(stderr, " -l len stop after <len> octets.\n"); | |
6655 | 224 fprintf(stderr, " -o off add <off> to the displayed file position.\n"); |
7 | 225 fprintf(stderr, " -ps output in postscript plain hexdump style.\n"); |
226 fprintf(stderr, " -r reverse operation: convert (or patch) hexdump into binary.\n"); | |
227 fprintf(stderr, " -r -s off revert with <off> added to file positions found in hexdump.\n"); | |
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228 fprintf(stderr, " -d show offset in decimal instead of hex.\n"); |
7 | 229 fprintf(stderr, " -s %sseek start at <seek> bytes abs. %sinfile offset.\n", |
230 #ifdef TRY_SEEK | |
231 "[+][-]", "(or +: rel.) "); | |
232 #else | |
233 "", ""); | |
234 #endif | |
235 fprintf(stderr, " -u use upper case hex letters.\n"); | |
236 fprintf(stderr, " -v show version: \"%s%s\".\n", version, osver); | |
237 exit(1); | |
238 } | |
239 | |
2752 | 240 static void |
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241 perror_exit(int ret) |
2752 | 242 { |
243 fprintf(stderr, "%s: ", pname); | |
244 perror(NULL); | |
245 exit(ret); | |
246 } | |
247 | |
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248 static void |
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249 error_exit(int ret, char *msg) |
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250 { |
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251 fprintf(stderr, "%s: %s\n", pname, msg); |
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252 exit(ret); |
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253 } |
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254 |
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255 static void |
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256 exit_on_ferror(char c, FILE *fpi) |
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257 { |
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258 if (c == EOF && ferror(fpi)) |
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259 perror_exit(2); |
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260 } |
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261 |
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262 static void |
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263 putc_or_die(char c, FILE *fpo) |
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264 { |
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265 if (putc(c, fpo) == EOF) |
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266 perror_exit(3); |
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267 } |
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268 |
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269 static void |
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270 fputs_or_die(char *s, FILE *fpo) |
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271 { |
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272 if (fputs(s, fpo) == EOF) |
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273 perror_exit(3); |
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274 } |
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275 |
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276 static void |
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277 fprintf_or_die(FILE *fpo, char *format, char *s, int d) |
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278 { |
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279 if (fprintf(fpo, format, s, d) < 0) |
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280 perror_exit(3); |
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281 } |
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282 |
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283 static void |
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284 fclose_or_die(FILE *fpi, FILE *fpo) |
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285 { |
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286 if (fclose(fpo) != 0) |
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287 perror_exit(3); |
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288 if (fclose(fpi) != 0) |
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289 perror_exit(2); |
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290 } |
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291 |
7 | 292 /* |
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293 * If "c" is a hex digit, return the value. |
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294 * Otherwise return -1. |
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295 */ |
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296 static int |
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297 parse_hex_digit(int c) |
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298 { |
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299 return (c >= '0' && c <= '9') ? c - '0' |
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300 : (c >= 'a' && c <= 'f') ? c - 'a' + 10 |
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301 : (c >= 'A' && c <= 'F') ? c - 'A' + 10 |
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302 : -1; |
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303 } |
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304 |
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305 /* |
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306 * Ignore text on "fpi" until end-of-line or end-of-file. |
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307 * Return the '\n' or EOF character. |
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308 * When an error is encountered exit with an error message. |
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309 */ |
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310 static int |
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311 skip_to_eol(FILE *fpi, int c) |
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312 { |
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313 while (c != '\n' && c != EOF) |
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314 c = getc(fpi); |
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315 exit_on_ferror(c, fpi); |
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316 return c; |
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317 } |
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318 |
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319 /* |
7 | 320 * Max. cols binary characters are decoded from the input stream per line. |
321 * Two adjacent garbage characters after evaluated data delimit valid data. | |
322 * Everything up to the next newline is discarded. | |
323 * | |
324 * The name is historic and came from 'undo type opt h'. | |
325 */ | |
2752 | 326 static int |
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327 huntype( |
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328 FILE *fpi, |
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329 FILE *fpo, |
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330 int cols, |
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331 int hextype, |
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332 long base_off) |
7 | 333 { |
334 int c, ign_garb = 1, n1 = -1, n2 = 0, n3, p = cols; | |
335 long have_off = 0, want_off = 0; | |
336 | |
337 rewind(fpi); | |
338 | |
339 while ((c = getc(fpi)) != EOF) | |
340 { | |
341 if (c == '\r') /* Doze style input file? */ | |
342 continue; | |
343 | |
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344 /* Allow multiple spaces. This doesn't work when there is normal text |
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345 * after the hex codes in the last line that looks like hex, thus only |
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346 * use it for PostScript format. */ |
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347 if (hextype == HEX_POSTSCRIPT && (c == ' ' || c == '\n' || c == '\t')) |
856 | 348 continue; |
809 | 349 |
7 | 350 n3 = n2; |
351 n2 = n1; | |
352 | |
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353 n1 = parse_hex_digit(c); |
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354 if (n1 == -1 && ign_garb) |
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355 continue; |
7 | 356 |
357 ign_garb = 0; | |
358 | |
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359 if (!hextype && (p >= cols)) |
7 | 360 { |
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361 if (n1 < 0) |
7 | 362 { |
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363 p = 0; |
7 | 364 continue; |
365 } | |
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366 want_off = (want_off << 4) | n1; |
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367 continue; |
7 | 368 } |
369 | |
370 if (base_off + want_off != have_off) | |
371 { | |
2752 | 372 if (fflush(fpo) != 0) |
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373 perror_exit(3); |
7 | 374 #ifdef TRY_SEEK |
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375 if (fseek(fpo, base_off + want_off - have_off, SEEK_CUR) >= 0) |
7 | 376 have_off = base_off + want_off; |
377 #endif | |
378 if (base_off + want_off < have_off) | |
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379 error_exit(5, "sorry, cannot seek backwards."); |
7 | 380 for (; have_off < base_off + want_off; have_off++) |
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381 putc_or_die(0, fpo); |
7 | 382 } |
383 | |
384 if (n2 >= 0 && n1 >= 0) | |
385 { | |
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386 putc_or_die((n2 << 4) | n1, fpo); |
7 | 387 have_off++; |
388 want_off++; | |
389 n1 = -1; | |
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390 if (!hextype && (++p >= cols)) |
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391 /* skip the rest of the line as garbage */ |
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392 c = skip_to_eol(fpi, c); |
7 | 393 } |
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394 else if (n1 < 0 && n2 < 0 && n3 < 0) |
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395 /* already stumbled into garbage, skip line, wait and see */ |
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396 c = skip_to_eol(fpi, c); |
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397 |
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398 if (c == '\n') |
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399 { |
7 | 400 if (!hextype) |
401 want_off = 0; | |
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402 p = cols; |
7 | 403 ign_garb = 1; |
404 } | |
405 } | |
2752 | 406 if (fflush(fpo) != 0) |
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407 perror_exit(3); |
7 | 408 #ifdef TRY_SEEK |
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409 fseek(fpo, 0L, SEEK_END); |
7 | 410 #endif |
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411 fclose_or_die(fpi, fpo); |
7 | 412 return 0; |
413 } | |
414 | |
415 /* | |
416 * Print line l. If nz is false, xxdline regards the line a line of | |
417 * zeroes. If there are three or more consecutive lines of zeroes, | |
418 * they are replaced by a single '*' character. | |
419 * | |
420 * If the output ends with more than two lines of zeroes, you | |
421 * should call xxdline again with l being the last line and nz | |
422 * negative. This ensures that the last line is shown even when | |
423 * it is all zeroes. | |
424 * | |
425 * If nz is always positive, lines are never suppressed. | |
426 */ | |
2752 | 427 static void |
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428 xxdline(FILE *fp, char *l, int nz) |
7 | 429 { |
430 static char z[LLEN+1]; | |
431 static int zero_seen = 0; | |
432 | |
433 if (!nz && zero_seen == 1) | |
434 strcpy(z, l); | |
435 | |
436 if (nz || !zero_seen++) | |
437 { | |
438 if (nz) | |
439 { | |
440 if (nz < 0) | |
441 zero_seen--; | |
442 if (zero_seen == 2) | |
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443 fputs_or_die(z, fp); |
7 | 444 if (zero_seen > 2) |
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445 fputs_or_die("*\n", fp); |
7 | 446 } |
447 if (nz >= 0 || zero_seen > 0) | |
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448 fputs_or_die(l, fp); |
7 | 449 if (nz) |
450 zero_seen = 0; | |
451 } | |
452 } | |
453 | |
454 /* This is an EBCDIC to ASCII conversion table */ | |
455 /* from a proposed BTL standard April 16, 1979 */ | |
456 static unsigned char etoa64[] = | |
457 { | |
458 0040,0240,0241,0242,0243,0244,0245,0246, | |
459 0247,0250,0325,0056,0074,0050,0053,0174, | |
460 0046,0251,0252,0253,0254,0255,0256,0257, | |
461 0260,0261,0041,0044,0052,0051,0073,0176, | |
462 0055,0057,0262,0263,0264,0265,0266,0267, | |
463 0270,0271,0313,0054,0045,0137,0076,0077, | |
464 0272,0273,0274,0275,0276,0277,0300,0301, | |
465 0302,0140,0072,0043,0100,0047,0075,0042, | |
466 0303,0141,0142,0143,0144,0145,0146,0147, | |
467 0150,0151,0304,0305,0306,0307,0310,0311, | |
468 0312,0152,0153,0154,0155,0156,0157,0160, | |
469 0161,0162,0136,0314,0315,0316,0317,0320, | |
470 0321,0345,0163,0164,0165,0166,0167,0170, | |
471 0171,0172,0322,0323,0324,0133,0326,0327, | |
472 0330,0331,0332,0333,0334,0335,0336,0337, | |
473 0340,0341,0342,0343,0344,0135,0346,0347, | |
474 0173,0101,0102,0103,0104,0105,0106,0107, | |
475 0110,0111,0350,0351,0352,0353,0354,0355, | |
476 0175,0112,0113,0114,0115,0116,0117,0120, | |
477 0121,0122,0356,0357,0360,0361,0362,0363, | |
478 0134,0237,0123,0124,0125,0126,0127,0130, | |
479 0131,0132,0364,0365,0366,0367,0370,0371, | |
480 0060,0061,0062,0063,0064,0065,0066,0067, | |
481 0070,0071,0372,0373,0374,0375,0376,0377 | |
482 }; | |
483 | |
2752 | 484 int |
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485 main(int argc, char *argv[]) |
7 | 486 { |
487 FILE *fp, *fpo; | |
488 int c, e, p = 0, relseek = 1, negseek = 0, revert = 0; | |
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489 int cols = 0, nonzero = 0, autoskip = 0, hextype = HEX_NORMAL; |
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490 int capitalize = 0, decimal_offset = 0; |
7 | 491 int ebcdic = 0; |
492 int octspergrp = -1; /* number of octets grouped in output */ | |
493 int grplen; /* total chars per octet group */ | |
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494 long length = -1, n = 0, seekoff = 0; |
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495 unsigned long displayoff = 0; |
2770 | 496 static char l[LLEN+1]; /* static because it may be too big for stack */ |
2752 | 497 char *pp; |
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498 int addrlen = 9; |
7 | 499 |
500 #ifdef AMIGA | |
501 /* This program doesn't work when started from the Workbench */ | |
502 if (argc == 0) | |
503 exit(1); | |
504 #endif | |
505 | |
506 pname = argv[0]; | |
507 for (pp = pname; *pp; ) | |
508 if (*pp++ == PATH_SEP) | |
509 pname = pp; | |
510 #ifdef FILE_SEP | |
511 for (pp = pname; *pp; pp++) | |
512 if (*pp == FILE_SEP) | |
513 { | |
514 *pp = '\0'; | |
515 break; | |
516 } | |
517 #endif | |
518 | |
519 while (argc >= 2) | |
520 { | |
521 pp = argv[1] + (!STRNCMP(argv[1], "--", 2) && argv[1][2]); | |
522 if (!STRNCMP(pp, "-a", 2)) autoskip = 1 - autoskip; | |
523 else if (!STRNCMP(pp, "-b", 2)) hextype = HEX_BITS; | |
6655 | 524 else if (!STRNCMP(pp, "-e", 2)) hextype = HEX_LITTLEENDIAN; |
7 | 525 else if (!STRNCMP(pp, "-u", 2)) hexx = hexxa + 16; |
526 else if (!STRNCMP(pp, "-p", 2)) hextype = HEX_POSTSCRIPT; | |
527 else if (!STRNCMP(pp, "-i", 2)) hextype = HEX_CINCLUDE; | |
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patch 8.0.1656: no option to have xxd produce upper case variable names
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528 else if (!STRNCMP(pp, "-C", 2)) capitalize = 1; |
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529 else if (!STRNCMP(pp, "-d", 2)) decimal_offset = 1; |
7 | 530 else if (!STRNCMP(pp, "-r", 2)) revert++; |
531 else if (!STRNCMP(pp, "-E", 2)) ebcdic++; | |
532 else if (!STRNCMP(pp, "-v", 2)) | |
533 { | |
534 fprintf(stderr, "%s%s\n", version, osver); | |
535 exit(0); | |
536 } | |
537 else if (!STRNCMP(pp, "-c", 2)) | |
538 { | |
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539 if (pp[2] && !STRNCMP("apitalize", pp + 2, 9)) |
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540 capitalize = 1; |
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541 else if (pp[2] && STRNCMP("ols", pp + 2, 3)) |
7 | 542 cols = (int)strtol(pp + 2, NULL, 0); |
543 else | |
544 { | |
545 if (!argv[2]) | |
2752 | 546 exit_with_usage(); |
7 | 547 cols = (int)strtol(argv[2], NULL, 0); |
548 argv++; | |
549 argc--; | |
550 } | |
551 } | |
552 else if (!STRNCMP(pp, "-g", 2)) | |
553 { | |
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554 if (pp[2] && STRNCMP("roup", pp + 2, 4)) |
7 | 555 octspergrp = (int)strtol(pp + 2, NULL, 0); |
556 else | |
557 { | |
558 if (!argv[2]) | |
2752 | 559 exit_with_usage(); |
7 | 560 octspergrp = (int)strtol(argv[2], NULL, 0); |
561 argv++; | |
562 argc--; | |
563 } | |
564 } | |
6655 | 565 else if (!STRNCMP(pp, "-o", 2)) |
566 { | |
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567 int reloffset = 0; |
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568 int negoffset = 0; |
6655 | 569 if (pp[2] && STRNCMP("ffset", pp + 2, 5)) |
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570 displayoff = strtoul(pp + 2, NULL, 0); |
6655 | 571 else |
572 { | |
573 if (!argv[2]) | |
574 exit_with_usage(); | |
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575 |
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576 if (argv[2][0] == '+') |
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577 reloffset++; |
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578 if (argv[2][reloffset] == '-') |
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579 negoffset++; |
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580 |
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581 if (negoffset) |
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582 displayoff = ULONG_MAX - strtoul(argv[2] + reloffset+negoffset, NULL, 0) + 1; |
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583 else |
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584 displayoff = strtoul(argv[2] + reloffset+negoffset, NULL, 0); |
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585 |
6655 | 586 argv++; |
587 argc--; | |
588 } | |
589 } | |
7 | 590 else if (!STRNCMP(pp, "-s", 2)) |
591 { | |
592 relseek = 0; | |
593 negseek = 0; | |
594 if (pp[2] && STRNCMP("kip", pp+2, 3) && STRNCMP("eek", pp+2, 3)) | |
595 { | |
596 #ifdef TRY_SEEK | |
597 if (pp[2] == '+') | |
598 relseek++; | |
599 if (pp[2+relseek] == '-') | |
600 negseek++; | |
601 #endif | |
602 seekoff = strtol(pp + 2+relseek+negseek, (char **)NULL, 0); | |
603 } | |
604 else | |
605 { | |
606 if (!argv[2]) | |
2752 | 607 exit_with_usage(); |
7 | 608 #ifdef TRY_SEEK |
609 if (argv[2][0] == '+') | |
610 relseek++; | |
611 if (argv[2][relseek] == '-') | |
612 negseek++; | |
613 #endif | |
614 seekoff = strtol(argv[2] + relseek+negseek, (char **)NULL, 0); | |
615 argv++; | |
616 argc--; | |
617 } | |
618 } | |
619 else if (!STRNCMP(pp, "-l", 2)) | |
620 { | |
621 if (pp[2] && STRNCMP("en", pp + 2, 2)) | |
622 length = strtol(pp + 2, (char **)NULL, 0); | |
623 else | |
624 { | |
625 if (!argv[2]) | |
2752 | 626 exit_with_usage(); |
7 | 627 length = strtol(argv[2], (char **)NULL, 0); |
628 argv++; | |
629 argc--; | |
630 } | |
631 } | |
632 else if (!strcmp(pp, "--")) /* end of options */ | |
633 { | |
634 argv++; | |
635 argc--; | |
636 break; | |
637 } | |
638 else if (pp[0] == '-' && pp[1]) /* unknown option */ | |
2752 | 639 exit_with_usage(); |
7 | 640 else |
641 break; /* not an option */ | |
642 | |
643 argv++; /* advance to next argument */ | |
644 argc--; | |
645 } | |
646 | |
647 if (!cols) | |
648 switch (hextype) | |
649 { | |
650 case HEX_POSTSCRIPT: cols = 30; break; | |
651 case HEX_CINCLUDE: cols = 12; break; | |
652 case HEX_BITS: cols = 6; break; | |
653 case HEX_NORMAL: | |
6655 | 654 case HEX_LITTLEENDIAN: |
7 | 655 default: cols = 16; break; |
656 } | |
657 | |
658 if (octspergrp < 0) | |
659 switch (hextype) | |
660 { | |
661 case HEX_BITS: octspergrp = 1; break; | |
662 case HEX_NORMAL: octspergrp = 2; break; | |
6655 | 663 case HEX_LITTLEENDIAN: octspergrp = 4; break; |
7 | 664 case HEX_POSTSCRIPT: |
665 case HEX_CINCLUDE: | |
666 default: octspergrp = 0; break; | |
667 } | |
668 | |
6655 | 669 if (cols < 1 || ((hextype == HEX_NORMAL || hextype == HEX_BITS || hextype == HEX_LITTLEENDIAN) |
1452 | 670 && (cols > COLS))) |
7 | 671 { |
672 fprintf(stderr, "%s: invalid number of columns (max. %d).\n", pname, COLS); | |
673 exit(1); | |
674 } | |
675 | |
6655 | 676 if (octspergrp < 1 || octspergrp > cols) |
7 | 677 octspergrp = cols; |
6655 | 678 else if (hextype == HEX_LITTLEENDIAN && (octspergrp & (octspergrp-1))) |
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679 error_exit(1, "number of octets per group must be a power of 2 with -e."); |
7 | 680 |
681 if (argc > 3) | |
2752 | 682 exit_with_usage(); |
7 | 683 |
684 if (argc == 1 || (argv[1][0] == '-' && !argv[1][1])) | |
685 BIN_ASSIGN(fp = stdin, !revert); | |
686 else | |
687 { | |
688 if ((fp = fopen(argv[1], BIN_READ(!revert))) == NULL) | |
689 { | |
690 fprintf(stderr,"%s: ", pname); | |
691 perror(argv[1]); | |
692 return 2; | |
693 } | |
694 } | |
695 | |
696 if (argc < 3 || (argv[2][0] == '-' && !argv[2][1])) | |
697 BIN_ASSIGN(fpo = stdout, revert); | |
698 else | |
699 { | |
700 int fd; | |
701 int mode = revert ? O_WRONLY : (O_TRUNC|O_WRONLY); | |
702 | |
703 if (((fd = OPEN(argv[2], mode | BIN_CREAT(revert), 0666)) < 0) || | |
704 (fpo = fdopen(fd, BIN_WRITE(revert))) == NULL) | |
705 { | |
706 fprintf(stderr, "%s: ", pname); | |
707 perror(argv[2]); | |
708 return 3; | |
709 } | |
710 rewind(fpo); | |
711 } | |
712 | |
713 if (revert) | |
714 { | |
715 if (hextype && (hextype != HEX_POSTSCRIPT)) | |
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716 error_exit(-1, "sorry, cannot revert this type of hexdump"); |
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changeset
|
717 return huntype(fp, fpo, cols, hextype, |
7 | 718 negseek ? -seekoff : seekoff); |
719 } | |
720 | |
721 if (seekoff || negseek || !relseek) | |
722 { | |
723 #ifdef TRY_SEEK | |
724 if (relseek) | |
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725 e = fseek(fp, negseek ? -seekoff : seekoff, SEEK_CUR); |
7 | 726 else |
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727 e = fseek(fp, negseek ? -seekoff : seekoff, |
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patch 8.2.3594: xxd code is a bit difficult to understand
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728 negseek ? SEEK_END : SEEK_SET); |
7 | 729 if (e < 0 && negseek) |
26040
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|
730 error_exit(4, "sorry cannot seek."); |
7 | 731 if (e >= 0) |
732 seekoff = ftell(fp); | |
733 else | |
734 #endif | |
735 { | |
736 long s = seekoff; | |
737 | |
738 while (s--) | |
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739 if ((c = getc(fp)) == EOF) |
2754 | 740 { |
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|
741 exit_on_ferror(c, fp); |
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742 error_exit(4, "sorry cannot seek."); |
2754 | 743 } |
7 | 744 } |
745 } | |
746 | |
747 if (hextype == HEX_CINCLUDE) | |
748 { | |
749 if (fp != stdin) | |
750 { | |
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751 fprintf_or_die(fpo, "unsigned char %s", isdigit((int)argv[1][0]) ? "__" : "", 0); |
7 | 752 for (e = 0; (c = argv[1][e]) != 0; e++) |
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753 putc_or_die(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo); |
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754 fputs_or_die("[] = {\n", fpo); |
7 | 755 } |
756 | |
757 p = 0; | |
2752 | 758 c = 0; |
7 | 759 while ((length < 0 || p < length) && (c = getc(fp)) != EOF) |
760 { | |
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761 fprintf_or_die(fpo, (hexx == hexxa) ? "%s0x%02x" : "%s0X%02X", |
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762 (p % cols) ? ", " : &",\n "[2*!p], c); |
7 | 763 p++; |
764 } | |
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765 exit_on_ferror(c, fp); |
7 | 766 |
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767 if (p) |
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768 fputs_or_die("\n", fpo); |
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769 fputs_or_die(&"};\n"[3 * (fp == stdin)], fpo); |
7 | 770 |
771 if (fp != stdin) | |
772 { | |
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773 fprintf_or_die(fpo, "unsigned int %s", isdigit((int)argv[1][0]) ? "__" : "", 0); |
7 | 774 for (e = 0; (c = argv[1][e]) != 0; e++) |
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775 putc_or_die(isalnum(c) ? CONDITIONAL_CAPITALIZE(c) : '_', fpo); |
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776 fprintf_or_die(fpo, "_%s = %d;\n", capitalize ? "LEN" : "len", p); |
7 | 777 } |
778 | |
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779 fclose_or_die(fp, fpo); |
7 | 780 return 0; |
781 } | |
782 | |
783 if (hextype == HEX_POSTSCRIPT) | |
784 { | |
785 p = cols; | |
2752 | 786 e = 0; |
7 | 787 while ((length < 0 || n < length) && (e = getc(fp)) != EOF) |
788 { | |
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789 putc_or_die(hexx[(e >> 4) & 0xf], fpo); |
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790 putc_or_die(hexx[e & 0xf], fpo); |
7 | 791 n++; |
792 if (!--p) | |
793 { | |
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794 putc_or_die('\n', fpo); |
7 | 795 p = cols; |
796 } | |
797 } | |
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798 exit_on_ferror(e, fp); |
7 | 799 if (p < cols) |
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800 putc_or_die('\n', fpo); |
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801 fclose_or_die(fp, fpo); |
7 | 802 return 0; |
803 } | |
804 | |
6655 | 805 /* hextype: HEX_NORMAL or HEX_BITS or HEX_LITTLEENDIAN */ |
7 | 806 |
6655 | 807 if (hextype != HEX_BITS) |
7 | 808 grplen = octspergrp + octspergrp + 1; /* chars per octet group */ |
809 else /* hextype == HEX_BITS */ | |
810 grplen = 8 * octspergrp + 1; | |
811 | |
2752 | 812 e = 0; |
7 | 813 while ((length < 0 || n < length) && (e = getc(fp)) != EOF) |
814 { | |
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|
815 int x; |
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diff
changeset
|
816 |
7 | 817 if (p == 0) |
818 { | |
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819 addrlen = sprintf(l, decimal_offset ? "%08ld:" : "%08lx:", |
20601
75ef263d09d6
patch 8.2.0854: xxd cannot show offset as a decimal number
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820 ((unsigned long)(n + seekoff + displayoff))); |
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821 for (c = addrlen; c < LLEN; l[c++] = ' '); |
7 | 822 } |
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|
823 x = hextype == HEX_LITTLEENDIAN ? p ^ (octspergrp-1) : p; |
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824 c = addrlen + 1 + (grplen * x) / octspergrp; |
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825 if (hextype == HEX_NORMAL || hextype == HEX_LITTLEENDIAN) |
7 | 826 { |
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827 l[c] = hexx[(e >> 4) & 0xf]; |
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828 l[++c] = hexx[e & 0xf]; |
7 | 829 } |
830 else /* hextype == HEX_BITS */ | |
831 { | |
832 int i; | |
833 for (i = 7; i >= 0; i--) | |
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834 l[c++] = (e & (1 << i)) ? '1' : '0'; |
7 | 835 } |
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836 if (e) |
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837 nonzero++; |
7 | 838 if (ebcdic) |
839 e = (e < 64) ? '.' : etoa64[e-64]; | |
1452 | 840 /* When changing this update definition of LLEN above. */ |
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841 c = addrlen + 3 + (grplen * cols - 1)/octspergrp + p; |
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842 l[c++] = |
7 | 843 #ifdef __MVS__ |
844 (e >= 64) | |
845 #else | |
846 (e > 31 && e < 127) | |
847 #endif | |
848 ? e : '.'; | |
849 n++; | |
850 if (++p == cols) | |
851 { | |
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852 l[c] = '\n'; |
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853 l[++c] = '\0'; |
7 | 854 xxdline(fpo, l, autoskip ? nonzero : 1); |
855 nonzero = 0; | |
856 p = 0; | |
857 } | |
858 } | |
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859 exit_on_ferror(e, fp); |
7 | 860 if (p) |
861 { | |
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862 l[c] = '\n'; |
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863 l[++c] = '\0'; |
7 | 864 xxdline(fpo, l, 1); |
865 } | |
866 else if (autoskip) | |
1197 | 867 xxdline(fpo, l, -1); /* last chance to flush out suppressed lines */ |
7 | 868 |
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869 fclose_or_die(fp, fpo); |
7 | 870 return 0; |
871 } | |
2752 | 872 |
873 /* vi:set ts=8 sw=4 sts=2 cino+={2 cino+=n-2 : */ |