mdw@git.distorted.org.uk Git - mLib/blob - test/tvec-main.c

   1 /* -*-c-*-
   2  *
   3  * Main entry point for test-vector processing
   4  *
   5  * (c) 2023 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of the mLib utilities library.
  11  *
  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
  15  * your option) any later version.
  16  *
  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.
  21  *
  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,
  25  * USA.
  26  */
  27
  28 /*----- Header files ------------------------------------------------------*/
  29
  30 #include "config.h"
  31
  32 #include <ctype.h>
  33 #include <errno.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 #include <unistd.h>
  39
  40 #include "bench.h"
  41 #include "dstr.h"
  42 #include "macros.h"
  43 #include "mdwopt.h"
  44 #include "quis.h"
  45 #include "report.h"
  46 #include "tvec.h"
  47
  48 /*----- Main code ---------------------------------------------------------*/
  49
  50 static const struct outform {
  51   const char *name;
  52   struct tvec_output *(*makefn)(FILE *fp);
  53 } outtab[] = {
  54   { "human",            tvec_humanoutput },
  55   { "tap",              tvec_tapoutput },
  56   { 0,                  0 }
  57 };
  58
  59 static struct bench_state benchstate;
  60
  61 const struct tvec_info tvec_adhocinfo =
  62   { 0, 1, 1, sizeof(struct tvec_reg) };
  63
  64 static const struct outform *find_outform(const char *p)
  65 {
  66   const struct outform *best = 0, *of;
  67   size_t n = strlen(p);
  68
  69   for (of = outtab; of->name; of++)
  70     if (!STRNCMP(p, ==, of->name, n))
  71       ;
  72     else if (!of->name[n])
  73       return (of);
  74     else if (best)
  75       die(2, "ambiguous output format name (`%s' or `%s'?)",
  76           best->name, of->name);
  77     else
  78       best = of;
  79   if (best) return (best);
  80   else die(2, "unknown output format `%s'", optarg);
  81 }
  82
  83 static void version(FILE *fp)
  84   { pquis(fp, "$, mLib test-vector framework version " VERSION "\n"); }
  85
  86 static void usage(FILE *fp)
  87 {
  88   pquis(fp, "\
  89 usage: $ [-f FORMAT] [-o OUTPUT] [-t SECS] [TEST-FILE ...]\n\
  90 ");
  91 }
  92
  93 static void help(FILE *fp)
  94 {
  95   version(fp); fputc('\n', fp);
  96   usage(fp); fputs("\
  97 Options:\n\
  98   -h, --help            show this help text.\n\
  99   -v, --version         show version number.\n\
 100   -u, --usage           show usage synopsis.\n\
 101 \n\
 102   -f, --format=FORMAT   produce output in FORMAT.\n\
 103   -o, --output=OUTPUT   write output to OUTPUT file.\n\
 104   -t, --target=SECS     aim to run benchmarks for SECS.\n\
 105 ", fp);
 106 }
 107
 108 void tvec_parseargs(int argc, char *argv[], struct tvec_state *tv_out,
 109                     int *argpos_out, const struct tvec_info *info)
 110 {
 111   FILE *ofp = 0;
 112   const struct outform *of = 0;
 113   struct tvec_output *o;
 114   struct bench_timer *tm;
 115   const char *p; char *q;
 116   int opt;
 117   double t;
 118   unsigned f = 0;
 119 #define f_bogus 1u
 120
 121   static const struct option options[] = {
 122     { "help",           0,              0,      'h' },
 123     { "version",        0,              0,      'v' },
 124     { "usage",          0,              0,      'u' },
 125
 126     { "format",         OPTF_ARGREQ,    0,      'f' },
 127     { "output",         OPTF_ARGREQ,    0,      'o' },
 128     { "target",         OPTF_ARGREQ,    0,      't' },
 129     { 0,                0,              0,      0 }
 130   };
 131
 132   tvec_benchstate = &benchstate;
 133   tm = bench_createtimer(); bench_init(&benchstate, tm);
 134   ego(argv[0]);
 135   for (;;) {
 136     opt = mdwopt(argc, argv, "hvu" "f:o:t:", options, 0, 0, 0);
 137     if (opt < 0) break;
 138     switch (opt) {
 139       case 'h': help(stdout); exit(0);
 140       case 'v': version(stdout); exit(0);
 141       case 'u': usage(stdout); exit(0);
 142
 143       case 'f': of = find_outform(optarg); break;
 144       case 'o':
 145         if (ofp) fclose(ofp);
 146         ofp = fopen(optarg, "w");
 147         if (!ofp)
 148           die(2, "failed to open `%s' for writing: %s",
 149               optarg, strerror(errno));
 150         break;
 151       case 't':
 152         errno = 0; t = strtod(optarg, &q);
 153         while (ISSPACE(*q)) q++;
 154         if (errno || *q || t < 0) die(2, "invalid time `%s'", optarg);
 155         benchstate.target_s = t;
 156         break;
 157
 158       default:
 159         f |= f_bogus;
 160         break;
 161     }
 162   }
 163   if (f&f_bogus) { usage(stderr); exit(2); }
 164   if (!ofp) ofp = stdout;
 165   if (!of) {
 166     p = getenv("TVEC_FORMAT");
 167     if (p) of = find_outform(p);
 168   }
 169   if (of) o = of->makefn(ofp);
 170   else o = tvec_dfltout(ofp);
 171
 172   tvec_begin(tv_out, info, o); *argpos_out = optind;
 173 }
 174
 175 void tvec_readstdin(struct tvec_state *tv)
 176   { tvec_read(tv, "<stdin>", stdin); }
 177
 178 void tvec_readfile(struct tvec_state *tv, const char *file)
 179 {
 180   FILE *fp;
 181
 182   fp = fopen(file, "r");
 183   if (!fp)
 184     tvec_error(tv, "failed to open `%s' for reading: %s",
 185                file, strerror(errno));
 186   tvec_read(tv, file, fp);
 187   fclose(fp);
 188 }
 189
 190 void tvec_readdflt(struct tvec_state *tv, const char *file)
 191 {
 192   dstr d = DSTR_INIT;
 193   const char *p;
 194
 195   if (file) {
 196     p = getenv("srcdir");
 197     if (p)
 198       { dstr_putf(&d, "%s/%s", p, file); file = d.buf; }
 199     tvec_readfile(tv, file);
 200   } else if (isatty(0))
 201     tvec_error(tv, "use `-' to force reading from interactive stdin");
 202   else
 203     tvec_readstdin(tv);
 204 }
 205
 206 void tvec_readarg(struct tvec_state *tv, const char *arg)
 207 {
 208   if (STRCMP(arg, ==, "-")) tvec_readstdin(tv);
 209   else tvec_readfile(tv, arg);
 210 }
 211
 212 void tvec_readargs(int argc, char *argv[], struct tvec_state *tv,
 213                    int *argpos_inout, const char *dflt)
 214 {
 215   int i = *argpos_inout;
 216
 217
 218   if (i == argc) tvec_readdflt(tv, dflt);
 219   else while (i < argc) tvec_readarg(tv, argv[i++]);
 220   *argpos_inout = i;
 221 }
 222
 223 int tvec_main(int argc, char *argv[],
 224               const struct tvec_info *info, const char *dflt)
 225 {
 226   struct tvec_state tv;
 227   int argpos;
 228
 229   tvec_parseargs(argc, argv, &tv, &argpos, info);
 230   tvec_readargs(argc, argv, &tv, &argpos, dflt);
 231   return (tvec_end(&tv));
 232 }
 233
 234 /*----- That's all, folks -------------------------------------------------*/