3 * Common test driver for encoding and decoding
5 * (c) 2009 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the mLib utilities library.
12 * mLib is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Library General Public License as
14 * published by the Free Software Foundation; either version 2 of the
15 * License, or (at your option) any later version.
17 * mLib is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Library General Public License for more details.
22 * You should have received a copy of the GNU Library General Public
23 * License along with mLib; if not, write to the Free
24 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
28 /*----- Header files ------------------------------------------------------*/
48 /*----- Static variables --------------------------------------------------*/
50 static const codec_class
*cctab
[] = {
61 static const struct { const char *name
; unsigned f
; } flagtab
[] = {
62 { "lowerc", CDCF_LOWERC
},
63 { "igncase", CDCF_IGNCASE
},
64 { "noeqpad", CDCF_NOEQPAD
},
65 { "igneqpad", CDCF_IGNEQPAD
},
66 { "igneqmid", CDCF_IGNEQMID
},
67 { "ignzpad", CDCF_IGNZPAD
},
68 { "ignnewl", CDCF_IGNNEWL
},
69 { "ignspc", CDCF_IGNSPC
},
70 { "igninvch", CDCF_IGNINVCH
},
71 { "ignjunk", CDCF_IGNJUNK
},
75 /*----- Main code ---------------------------------------------------------*/
77 static void usage(FILE *fp
)
80 "Usage: $ [-de] [-f FLAGS] [-i INDENT] [-m MAXLINE] [-o OUTPUT]\n"
81 "\tCODEC [FILE ...]\n");
84 static void version(FILE *fp
)
85 { pquis(fp
, "$, mLib version " VERSION
"\n"); }
87 static void help(FILE *fp
)
95 Encodes and decodes binary files. Options provided:\n\
97 -h, --help Show this help text.\n\
98 -v, --version Show the program's version number.\n\
99 -u, --usage Show a terse usage message.\n\
101 -d, --decode Decode binary FILEs.\n\
102 -e, --encode Encode binary FILEs (default).\n\
103 -f, --flags=FLAGS Set encoding/decoding FLAGS.\n\
104 -i, --indent=INDENT Indent each line with INDENT.\n\
105 -m, --maxline=MAXLINE Limit line length to (about) MAXLINE.\n\
106 -o, --output=OUTPUT Write encoded/decoded data to OUTPUT.\n\
108 #define ENUM(label, tab, end, getname) do { \
109 fputs(label ":", fp); \
110 for (i = 0; tab[i]end; i++) fprintf(fp, " %s", tab[i]getname); \
113 ENUM("Codecs", cctab
, != 0, ->name
);
114 ENUM("Flags", flagtab
, .name
, .name
);
118 static void code(codec
*c
, const char *ifile
, FILE *ifp
, FILE *ofp
)
126 n
= fread(buf
, 1, sizeof(buf
), ifp
);
128 if ((err
= c
->ops
->code(c
, buf
, n
, &d
)) != 0)
129 die(EXIT_FAILURE
, "decoding error: %s", codec_strerror(err
));
130 } while (fwrite(d
.buf
, 1, d
.len
, ofp
) == d
.len
&& n
== sizeof(buf
));
132 die(EXIT_FAILURE
, "error reading `%s': %s", ifile
, strerror(errno
));
135 int main(int argc
, char *argv
[])
137 enum { encode
, decode
};
139 const codec_class
**cc
;
141 const char *indent
= "";
142 const char *imode
, *omode
, *ofile
= 0;
143 unsigned maxline
= 64;
144 unsigned f
= CDCF_IGNSPC
| CDCF_IGNNEWL
;
147 FILE *ifp
, *ofp
= stdout
;
154 #define f_bogus 32768u
159 static const struct option opts
[] = {
160 { "help", 0, 0, 'h' },
161 { "version", 0, 0, 'v' },
162 { "usage", 0, 0, 'u' },
163 { "encode", 0, 0, 'e' },
164 { "decode", 0, 0, 'd' },
165 { "indent", OPTF_ARGREQ
, 0, 'i' },
166 { "maxline", OPTF_ARGREQ
, 0, 'm' },
167 { "output", OPTF_ARGREQ
, 0, 'o' },
168 { "flags", OPTF_ARGREQ
, 0, 'f' },
172 if ((i
= mdwopt(argc
, argv
, "hvu" "edf:i:m:o:", opts
, 0, 0, 0)) < 0)
175 case 'h': help(stdout
); exit(0);
176 case 'v': version(stdout
); exit(0);
177 case 'u': usage(stdout
); exit(0);
179 case 'e': mode
= encode
; break;
180 case 'd': mode
= decode
; break;
181 case 'i': indent
= optarg
; break;
182 case 'o': ofile
= optarg
; break;
186 maxline
= strtoul(optarg
, &q
, 0);
187 if (*q
|| errno
) die(EXIT_FAILURE
, "bad integer `%s'", optarg
);
193 if (*p
== '-') { sense
= 0; p
++; }
194 else if (*p
== '+') { sense
= 1; p
++; }
197 for (i
= 0; flagtab
[i
].name
; i
++) {
198 if (strlen(flagtab
[i
].name
) == n
&&
199 STRNCMP(flagtab
[i
].name
, ==, p
, n
))
202 die(EXIT_FAILURE
, "unknown flag `%.*s'", (int)n
, p
);
204 if (sense
) f
|= flagtab
[i
].f
;
205 else f
&= ~flagtab
[i
].f
;
211 default: f
|= f_bogus
; break;
214 argv
+= optind
; argc
-= optind
;
215 if ((f
& f_bogus
) || !argc
) { usage(stderr
); exit(EXIT_FAILURE
); }
217 for (cc
= cctab
;; cc
++) {
218 if (!*cc
) die(EXIT_FAILURE
, "unknown codec `%s'", *argv
);
219 else if (STRCMP(*argv
, ==, (*cc
)->name
)) break;
226 for (p
= indent
;; p
++) {
231 case 'a': DPUTC(&d
, '\n'); break;
232 case 'b': DPUTC(&d
, '\b'); break;
233 case 'f': DPUTC(&d
, '\f'); break;
234 case 'n': DPUTC(&d
, '\n'); break;
235 case 'r': DPUTC(&d
, '\r'); break;
236 case 't': DPUTC(&d
, '\t'); break;
237 case 'v': DPUTC(&d
, '\v'); break;
238 case 0: goto done_indent
; break;
239 default: DPUTC(&d
, *p
); break;
251 c
= (*cc
)->encoder(f
, d
.buf
, maxline
);
252 imode
= "rb"; omode
= "w";
255 c
= (*cc
)->decoder(f
);
256 imode
= "r"; omode
= "wb";
262 if (ofile
&& (ofp
= fopen(ofile
, omode
)) == 0) {
263 die(EXIT_FAILURE
, "couldn't open `%s' for writing: %s",
264 ofile
, strerror(errno
));
267 if (mode
== encode
) fwrite(d
.buf
+ 1, 1, d
.len
- 1, ofp
);
269 code(c
, "<stdin>", stdin
, ofp
);
270 else for (i
= 0; i
< argc
; i
++) {
271 if (STRCMP(argv
[i
], ==, "-"))
272 code(c
, "<stdin>", stdin
, ofp
);
273 else if ((ifp
= fopen(argv
[i
], imode
)) == 0) {
274 die(EXIT_FAILURE
, "couldn't open `%s' for reading: %s",
275 argv
[i
], strerror(errno
));
277 code(c
, argv
[i
], ifp
, ofp
);
282 if ((err
= c
->ops
->code(c
, 0, 0, &d
)) != 0)
283 die(EXIT_FAILURE
, "decoding error: %s", codec_strerror(err
));
284 if (mode
== encode
) DPUTC(&d
, '\n');
285 fwrite(d
.buf
, 1, d
.len
, ofp
);
286 c
->ops
->destroy(c
); DDESTROY(&d
);
288 if (ferror(ofp
) || fflush(ofp
) || fclose(ofp
)) {
289 die(EXIT_FAILURE
, "error writing to `%s': %s",
290 ofile ? ofile
: "<stdout>", strerror(errno
));
295 /*----- That's all, folks -------------------------------------------------*/