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 ------------------------------------------------------*/
47 /*----- Static variables --------------------------------------------------*/
49 static const codec_class *cctab[] = {
60 static const struct { const char *name; unsigned f; } flagtab[] = {
61 { "lowerc", CDCF_LOWERC },
62 { "igncase", CDCF_IGNCASE },
63 { "noeqpad", CDCF_NOEQPAD },
64 { "igneqpad", CDCF_IGNEQPAD },
65 { "igneqmid", CDCF_IGNEQMID },
66 { "ignzpad", CDCF_IGNZPAD },
67 { "ignnewl", CDCF_IGNNEWL },
68 { "igninvch", CDCF_IGNINVCH },
69 { "ignjunk", CDCF_IGNJUNK },
73 /*----- Main code ---------------------------------------------------------*/
75 static void usage(FILE *fp)
78 "Usage: $ [-de] [-f FLAGS] [-i INDENT] [-m MAXLINE] [-o OUTPUT]\n"
79 "\tCODEC [FILE ...]\n");
82 static void version(FILE *fp)
83 { pquis(fp, "$, mLib version " VERSION "\n"); }
85 static void help(FILE *fp)
93 Encodes and decodes binary files. Options provided:\n\
95 -h, --help Show this help text.\n\
96 -v, --version Show the program's version number.\n\
97 -u, --usage Show a terse usage message.\n\
99 -d, --decode Decode binary FILEs.\n\
100 -e, --encode Encode binary FILEs (default).\n\
101 -f, --flags=FLAGS Set encoding/decoding FLAGS.\n\
102 -i, --indent=INDENT Indent each line with INDENT.\n\
103 -m, --maxline=MAXLINE Limit line length to (about) MAXLINE.\n\
104 -o, --output=OUTPUT Write encoded/decoded data to OUTPUT.\n\
106 #define ENUM(label, tab, end, getname) do { \
107 fputs(label ":", fp); \
108 for (i = 0; tab[i]end; i++) fprintf(fp, " %s", tab[i]getname); \
111 ENUM("Codecs", cctab, != 0, ->name);
112 ENUM("Flags", flagtab, .name, .name);
116 static void code(codec *c, const char *ifile, FILE *ifp, FILE *ofp)
124 n = fread(buf, 1, sizeof(buf), ifp);
126 if ((err = c->ops->code(c, buf, n, &d)) != 0)
127 die(EXIT_FAILURE, "decoding error: %s", codec_strerror(err));
128 } while (fwrite(d.buf, 1, d.len, ofp) == d.len && n == sizeof(buf));
130 die(EXIT_FAILURE, "error reading `%s': %s", ifile, strerror(errno));
133 int main(int argc, char *argv[])
135 enum { encode, decode };
137 const codec_class **cc;
139 const char *indent = "";
140 const char *imode, *omode, *ofile = 0;
141 unsigned maxline = 64;
142 unsigned f = CDCF_IGNNEWL;
145 FILE *ifp, *ofp = stdout;
152 #define f_bogus 32768u
157 static const struct option opts[] = {
158 { "help", 0, 0, 'h' },
159 { "version", 0, 0, 'v' },
160 { "usage", 0, 0, 'u' },
161 { "encode", 0, 0, 'e' },
162 { "decode", 0, 0, 'd' },
163 { "indent", OPTF_ARGREQ, 0, 'i' },
164 { "maxline", OPTF_ARGREQ, 0, 'm' },
165 { "output", OPTF_ARGREQ, 0, 'o' },
166 { "flags", OPTF_ARGREQ, 0, 'f' },
170 if ((i = mdwopt(argc, argv, "hvu" "edf:i:m:o:", opts, 0, 0, 0)) < 0)
173 case 'h': help(stdout); exit(0);
174 case 'v': version(stdout); exit(0);
175 case 'u': usage(stdout); exit(0);
177 case 'e': mode = encode; break;
178 case 'd': mode = decode; break;
179 case 'i': indent = optarg; break;
180 case 'o': ofile = optarg; break;
184 maxline = strtoul(optarg, &q, 0);
185 if (*q || errno) die(EXIT_FAILURE, "bad integer `%s'", optarg);
191 if (*p == '-') { sense = 0; p++; }
192 else if (*p == '+') { sense = 1; p++; }
195 for (i = 0; flagtab[i].name; i++) {
196 if (strlen(flagtab[i].name) == n &&
197 strncmp(flagtab[i].name, p, n) == 0)
200 die(EXIT_FAILURE, "unknown flag `%.*s'", (int)n, p);
202 if (sense) f |= flagtab[i].f;
203 else f &= ~flagtab[i].f;
209 default: f |= f_bogus; break;
212 argv += optind; argc -= optind;
213 if ((f & f_bogus) || !argc) { usage(stderr); exit(EXIT_FAILURE); }
215 for (cc = cctab;; cc++) {
216 if (!*cc) die(EXIT_FAILURE, "unknown codec `%s'", *argv);
217 else if (strcmp(*argv, (*cc)->name) == 0) break;
224 for (p = indent;; p++) {
229 case 'a': DPUTC(&d, '\n'); break;
230 case 'b': DPUTC(&d, '\b'); break;
231 case 'f': DPUTC(&d, '\f'); break;
232 case 'n': DPUTC(&d, '\n'); break;
233 case 'r': DPUTC(&d, '\r'); break;
234 case 't': DPUTC(&d, '\t'); break;
235 case 'v': DPUTC(&d, '\v'); break;
236 case 0: goto done_indent; break;
237 default: DPUTC(&d, *p); break;
249 c = (*cc)->encoder(f, d.buf, maxline);
250 imode = "rb"; omode = "w";
253 c = (*cc)->decoder(f);
254 imode = "r"; omode = "wb";
260 if (ofile && (ofp = fopen(ofile, omode)) == 0) {
261 die(EXIT_FAILURE, "couldn't open `%s' for writing: %s",
262 ofile, strerror(errno));
265 if (mode == encode) fwrite(d.buf + 1, 1, d.len - 1, ofp);
267 code(c, "<stdin>", stdin, ofp);
268 else for (i = 0; i < argc; i++) {
269 if (strcmp(argv[i], "-") == 0)
270 code(c, "<stdin>", stdin, ofp);
271 else if ((ifp = fopen(argv[i], imode)) == 0) {
272 die(EXIT_FAILURE, "couldn't open `%s' for reading: %s",
273 argv[i], strerror(errno));
275 code(c, argv[i], ifp, ofp);
280 if ((err = c->ops->code(c, 0, 0, &d)) != 0)
281 die(EXIT_FAILURE, "decoding error: %s", codec_strerror(err));
282 if (mode == encode) DPUTC(&d, '\n');
283 fwrite(d.buf, 1, d.len, ofp);
284 c->ops->destroy(c); DDESTROY(&d);
286 if (ferror(ofp) || fflush(ofp) || fclose(ofp)) {
287 die(EXIT_FAILURE, "error writing to `%s': %s",
288 ofile ? ofile : "<stdout>", strerror(errno));
293 /*----- That's all, folks -------------------------------------------------*/