3 * Main entry point for test-vector processing
5 * (c) 2023 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 it under
13 * the terms of the GNU Library General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or (at
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17 * mLib is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
20 * 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 Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
28 /*----- Header files ------------------------------------------------------*/
48 /*----- Main code ---------------------------------------------------------*/
50 /* Table of output formats. */
51 static const struct outform {
53 struct tvec_output *(*makefn)(FILE *fp);
55 { "human", tvec_humanoutput },
56 { "tap", tvec_tapoutput },
60 /* Configuration for ad-hoc testing. */
61 const struct tvec_config tvec_adhocconfig =
62 { 0, 1, 1, sizeof(struct tvec_reg) };
64 /* --- @find_outform@ ---
66 * Arguments: @const char *p@ = output name
68 * Returns: Pointer to output format record.
70 * Use: Looks up an output format by name. Reports a fatal error if
71 * no matching record is found.
74 static const struct outform *find_outform(const char *p)
76 const struct outform *best = 0, *of;
79 for (of = outtab; of->name; of++)
80 if (!STRNCMP(p, ==, of->name, n))
82 else if (!of->name[n])
85 die(2, "ambiguous output format name (`%s' or `%s'?)",
86 best->name, of->name);
89 if (best) return (best);
90 else die(2, "unknown output format `%s'", optarg);
93 /* --- @version@, @usage@, @help@ --- *
95 * Arguments: @FILE *fp@ = stream to write on
99 * Use: Output information about the program.
102 static void version(FILE *fp)
103 { pquis(fp, "$, mLib test-vector framework version " VERSION "\n"); }
105 static void usage(FILE *fp)
108 usage: $ [-f FORMAT] [-o OUTPUT] [-t SECS] [TEST-FILE ...]\n\
112 static void help(FILE *fp)
114 version(fp); fputc('\n', fp);
117 -h, --help show this help text.\n\
118 -v, --version show version number.\n\
119 -u, --usage show usage synopsis.\n\
121 -f, --format=FORMAT produce output in FORMAT.\n\
122 -o, --output=OUTPUT write output to OUTPUT file.\n\
126 /* --- @tvec_parseargs@ --- *
128 * Arguments: @int argc@ = number of command-line arguments
129 * @char *argv[]@ = vector of argument strings
130 * @struct tvec_state *tv_out@ = test vector state to initialize
131 * @int *argpos_out@ = where to leave unread argument index
132 * @const struct tvec_config *cofig@ = test vector configuration
136 * Use: Parse arguments and set up the test vector state @*tv_out@.
137 * If errors occur, print messages to standard error and exit
141 void tvec_parseargs(int argc, char *argv[], struct tvec_state *tv_out,
142 int *argpos_out, const struct tvec_config *config)
145 const struct outform *of = 0;
146 struct tvec_output *o;
152 static const struct option options[] = {
153 { "help", 0, 0, 'h' },
154 { "version", 0, 0, 'v' },
155 { "usage", 0, 0, 'u' },
157 { "format", OPTF_ARGREQ, 0, 'f' },
158 { "output", OPTF_ARGREQ, 0, 'o' },
164 opt = mdwopt(argc, argv, "hvu" "f:o:", options, 0, 0, 0);
167 case 'h': help(stdout); exit(0);
168 case 'v': version(stdout); exit(0);
169 case 'u': usage(stdout); exit(0);
171 case 'f': of = find_outform(optarg); break;
173 if (ofp) fclose(ofp);
174 ofp = fopen(optarg, "w");
176 die(2, "failed to open `%s' for writing: %s",
177 optarg, strerror(errno));
185 if (f&f_bogus) { usage(stderr); exit(2); }
186 if (!ofp) ofp = stdout;
188 p = getenv("TVEC_FORMAT");
189 if (p) of = find_outform(p);
191 if (of) o = of->makefn(ofp);
192 else o = tvec_dfltout(ofp);
194 tvec_begin(tv_out, config, o); *argpos_out = optind;
197 /* --- @tvec_readstdin@, @tvec_readfile@, @tvec_readarg@ --- *
199 * Arguments: @struct tvec_state *tv@ = test vector state
200 * @const char *file@ = pathname of file to read
201 * @const char *arg@ = argument to interpret
203 * Returns: Zero on success, @-1@ on error.
205 * Use: Read test vector data from stdin or a named file. The
206 * @tvec_readarg@ function reads from stdin if @arg@ is `%|-|%',
207 * and from the named file otherwise.
210 int tvec_readstdin(struct tvec_state *tv)
211 { return (tvec_read(tv, "<stdin>", stdin)); }
213 int tvec_readfile(struct tvec_state *tv, const char *file)
218 fp = fopen(file, "r");
220 tvec_error(tv, "failed to open `%s' for reading: %s",
221 file, strerror(errno));
224 if (tvec_read(tv, file, fp)) { rc = -1; goto end; }
231 int tvec_readarg(struct tvec_state *tv, const char *arg)
235 if (STRCMP(arg, ==, "-")) rc = tvec_readstdin(tv);
236 else rc = tvec_readfile(tv, arg);
240 /* --- @tvec_readdflt@ --- *
242 * Arguments: @struct tvec_state *tv@ = test vector state
243 * @const char *dflt@ = defsault filename or null
245 * Returns: Zero on success, @-1@ on error.
247 * Use: Reads from the default test vector data. If @file@ is null,
248 * then read from standard input, unless that's a terminal; if
249 * @file@ is not null, then read the named file, looking in the
250 * directory named by the `%|srcdir|%' environment variable if
251 * that's set, or otherwise in the current directory.
254 int tvec_readdflt(struct tvec_state *tv, const char *dflt)
261 p = getenv("srcdir");
262 if (p) { dstr_putf(&d, "%s/%s", p, dflt); dflt = d.buf; }
263 rc = tvec_readfile(tv, dflt);
264 } else if (isatty(0))
265 rc = tvec_error(tv, "use `-' to force reading from interactive stdin");
267 rc = tvec_readstdin(tv);
272 /* --- @tvec_readargs@ --- *
274 * Arguments: @int argc@ = number of command-line arguments
275 * @char *argv[]@ = vector of argument strings
276 * @struct tvec_state *tv@ = test vector state
277 * @int *argpos_inout@ = current argument position (updated)
278 * @const char *dflt@ = default filename or null
280 * Returns: Zero on success, @-1@ on error.
282 * Use: Reads from the sources indicated by the command-line
283 * arguments, in order, interpreting each as for @tvec_readarg@;
284 * if no arguments are given then read from @dflt@ as for
288 int tvec_readargs(int argc, char *argv[], struct tvec_state *tv,
289 int *argpos_inout, const char *dflt)
291 int i = *argpos_inout;
295 rc = tvec_readdflt(tv, dflt);
299 if (tvec_readarg(tv, argv[i++])) rc = -1;
305 /* --- @tvec_main@ --- *
307 * Arguments: @int argc@ = number of command-line arguments
308 * @char *argv[]@ = vector of argument strings
309 * @const struct tvec_config *cofig@ = test vector configuration
310 * @const char *dflt@ = default filename or null
312 * Returns: Exit code.
314 * Use: All-in-one test vector front-end. Parse options from the
315 * command-line as for @tvec_parseargs@, and then process the
316 * remaining positional arguments as for @tvec_readargs@. The
317 * function constructs and disposes of a test vector state.
320 int tvec_main(int argc, char *argv[],
321 const struct tvec_config *config, const char *dflt)
323 struct tvec_state tv;
326 tvec_parseargs(argc, argv, &tv, &argpos, config);
327 tvec_readargs(argc, argv, &tv, &argpos, dflt);
328 return (tvec_end(&tv));
331 /*----- That's all, folks -------------------------------------------------*/