mdw@git.distorted.org.uk Git - sw-tools/blob - src/sw.c

   1 /* -*-c-*-
   2  *
   3  * $Id: sw.c,v 1.2 1999/07/16 12:50:43 mdw Exp $
   4  *
   5  * Main driver code for sw-tools
   6  *
   7  * (c) 1999 EBI
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of sw-tools.
  13  *
  14  * sw-tools is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * sw-tools is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with sw-tools; if not, write to the Free Software Foundation,
  26  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: sw.c,v $
  32  * Revision 1.2  1999/07/16 12:50:43  mdw
  33  * Replace deprecated `mdwopt' flag name with new version.
  34  *
  35  * Revision 1.1.1.1  1999/06/02 16:53:33  mdw
  36  * Initial import.
  37  *
  38  */
  39
  40 /*----- Header files ------------------------------------------------------*/
  41
  42 #include "config.h"
  43
  44 #include <ctype.h>
  45 #include <errno.h>
  46 #include <signal.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50
  51 #include <unistd.h>
  52
  53 #include <mLib/alloc.h>
  54 #include <mLib/dstr.h>
  55 #include <mLib/exc.h>
  56 #include <mLib/mdwopt.h>
  57 #include <mLib/quis.h>
  58 #include <mLib/report.h>
  59 #include <mLib/sub.h>
  60
  61 #define CMD_LINK 0
  62 #include "sw.h"
  63 #include "sw_arch.h"
  64 #include "sw_build.h"
  65 #include "sw_info.h"
  66 #include "sw_links.h"
  67 #include "sw_rsh.h"
  68
  69 /*----- Static variables --------------------------------------------------*/
  70
  71 static cmd *cmds = CMD_LINK;
  72
  73 /*----- Global option variables -------------------------------------------*
  74  *
  75  * It'd be nicer if these could be parsed by the build commands, but alas
  76  * this is not to be.  Consider `sw configure --arch=i386-linux
  77  * --with-diffutils': how is the program to know which options are for it and
  78  * which are for the remote one?  The `configure' command is important,
  79  * because it does some hairy stuff under the covers (inserting magical
  80  * options, and running `../configure'), so I can't just require `sw run
  81  * configure'.  Requiring the user to always put in a `--' to separate the
  82  * two lots of options is horrific.  So they get picked up at the main
  83  * program and stuffed into global variables.
  84  *
  85  * On the other hand, there is the advantage that `--output' options can be
  86  * put in an environment variable here.
  87  */
  88
  89 const char *opt_output = 0;
  90 const char *opt_arch = 0;
  91 unsigned int opt_flags;
  92
  93 /*----- Helpful GNUy message routines -------------------------------------*/
  94
  95 /* --- @version@ --- */
  96
  97 static void version(FILE *fp)
  98 {
  99   fprintf(fp, "%s v. " VERSION "\n", QUIS);
 100 }
 101
 102 /* --- @usage@ --- */
 103
 104 static void usage(FILE *fp)
 105 {
 106   fprintf(fp, "Usage: %s [-fbi] [-a arch,...] [-o style] command [args]\n",
 107           QUIS);
 108 }
 109
 110 /* --- @help@ --- */
 111
 112 static void help(FILE *fp, int full)
 113 {
 114   cmd *p;
 115   version(fp);
 116   fputc('\n', fp);
 117   usage(fp);
 118   fputs("\n\
 119 Performs various handy jobs with multiple-architecture builds.\n\
 120 \n\
 121 There are some options which affect a few of the available commands:\n\
 122 \n\
 123 -a, --arch=ARCH,...     Only build on the named architectures.\n\
 124 -b, --beep              Beep when the build is complete.\n\
 125 -i, --install           Mark architectures as done when build succeeds.\n\
 126 -f, --force             Run build commands on installed architectures.\n\
 127 -o, --output=STYLE      Display output in a particular style.  Use style\n\
 128                         `help' for a list.\n\
 129 \n", fp);
 130
 131   if (full) {
 132     fputs("The various commands provided are:\n\n", fp);
 133     for (p = cmds; p; p = p->next) {
 134       fputs(p->help, fp);
 135       fputc('\n', fp);
 136     }
 137     fprintf(fp,
 138 "`%s' is an [mdw] production, brought to you in association with the\n\
 139 European Bioinformatics Institute.\n", QUIS);
 140   } else {
 141     fputs("The various commands, in summary:\n\n", fp);
 142     for (p = cmds; p; p = p->next) {
 143       size_t sz = strcspn(p->help, "\n\t");
 144       fwrite(p->help, 1, sz, fp);
 145       fputc('\n', fp);
 146     }
 147     fprintf(fp,
 148 "\nType `%s --help-full' for complete information.  There's a lot of it!\n",
 149             QUIS);
 150   }
 151 }
 152
 153 /*----- Main code ---------------------------------------------------------*/
 154
 155 /* --- @main@ --- *
 156  *
 157  * Arguments:   @int argc@ = number of command line arguments
 158  *              @char *argv[]@ = array of command line strings
 159  *
 160  * Returns:     Zero on success, nonzero on failure.
 161  *
 162  * Use:         Main program.  Parses some trivial arguments out, and
 163  *              dispatches control to one of the subprogram handlers.
 164  */
 165
 166 int main(int argc, char *argv[])
 167 {
 168   unsigned f = 0;
 169
 170   enum {
 171     f_bogus = 1
 172   };
 173
 174   /* --- Initialize the support library --- */
 175
 176   ego(argv[0]);
 177   sub_init();
 178
 179   /* --- Parse command line flags --- */
 180
 181   for (;;) {
 182     static struct option opt[] = {
 183
 184       /* --- Standard GNUy help options --- */
 185
 186       { "help",         0,              0,      'h' },
 187       { "help-full",    0,              0,      'H' },
 188       { "version",      0,              0,      'v' },
 189       { "usage",        0,              0,      'u' },
 190
 191       /* --- Build options --- *
 192        *
 193        */
 194
 195       { "arch",         OPTF_ARGREQ,    0,      'a' },
 196       { "force",        0,              0,      'f' },
 197       { "install",      0,              0,      'i' },
 198       { "output",       OPTF_ARGREQ,    0,      'o' },
 199       { "beep",         0,              0,      'b' },
 200
 201       /* --- Internal-use-only magical options --- *
 202        *
 203        * You get what you deserve if you use this.
 204        */
 205
 206       { "me",           OPTF_ARGREQ,    0,      '=' },
 207       { "remote",       OPTF_ARGREQ,    0,      '!' },
 208
 209       /* --- Termination marker --- */
 210
 211       { 0,              0,              0,      0 }
 212     };
 213     int i = mdwopt(argc, argv, "+hHvu a:bfio:", opt, 0, 0, OPTF_ENVVAR);
 214     if (i < 0)
 215       break;
 216
 217     switch (i) {
 218
 219       /* --- GNUy help --- */
 220
 221       case 'h':
 222         help(stdout, 0);
 223         exit(0);
 224       case 'H':
 225         help(stdout, 1);
 226         exit(0);
 227       case 'v':
 228         version(stdout);
 229         exit(0);
 230       case 'u':
 231         usage(stdout);
 232         exit(0);
 233
 234       /* --- Build options --- */
 235
 236       case 'a':
 237         opt_arch = optarg;
 238         break;
 239       case 'f':
 240         opt_flags |= optFlag_force;
 241         break;
 242       case 'b':
 243         opt_flags |= optFlag_beep;
 244         break;
 245       case 'i':
 246         opt_flags |= optFlag_install;
 247         break;
 248       case 'o':
 249         opt_output = optarg;
 250         break;
 251
 252       /* --- Magical options for internal use --- */
 253
 254       case '=':
 255         ego(optarg);
 256         break;
 257       case '!':
 258         swrsh_remote(optarg);
 259         _exit(1);
 260
 261       /* --- The user screwed up --- */
 262
 263       default:
 264         f |= f_bogus;
 265         break;
 266     }
 267   }
 268
 269   if (f & f_bogus || argc == optind) {
 270     usage(stderr);
 271     exit(1);
 272   }
 273
 274   /* --- Pick up the operation name --- */
 275
 276   argc -= optind;
 277   argv += optind;
 278   optind = 0;
 279
 280   {
 281     cmd *p, *chosen = 0;
 282     const char *which = argv[0];
 283     size_t sz = strlen(which);
 284
 285     for (p = cmds; p; p = p->next) {
 286       if (strncmp(which, p->name, sz) == 0) {
 287         if (p->name[sz] == 0) {
 288           chosen = p;
 289           break;
 290         } else if (chosen)
 291           die(1, "ambiguous command name `%s'", which);
 292         chosen = p;
 293       }
 294     }
 295
 296     if (!chosen)
 297       die(1, "unknown command name `%s'", which);
 298     signal(SIGPIPE, SIG_IGN);
 299     TRY
 300       return (chosen->cmd(argc, argv));
 301     CATCH switch (exc_type) {
 302       case EXC_NOMEM:
 303         die(1, "not enough memory");
 304       default:
 305         RETHROW;
 306     } END_TRY;
 307   }
 308   return (127);
 309 }
 310
 311 /*----- That's all, folks -------------------------------------------------*/