gcc/config/vms/vms-ar.c

   1 /* VMS archive wrapper.
   2    Copyright (C) 2011-2017 Free Software Foundation, Inc.
   3    Contributed by AdaCore.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include <errno.h>
  22 #include <stdio.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28
  29 #include "libiberty.h"
  30
  31 #define FATAL_EXIT_CODE (44 | 0x10000000)
  32
  33 /* Librarian arguments.  */
  34 static int lib_arg_max = 0;
  35 static const char **lib_args;
  36 static int lib_arg_index = -1;
  37
  38 /* Set for r/c/x/v command.  */
  39 static int replace_mode = 0;
  40 static int create_mode = 0;
  41 static int extract_mode = 0;
  42 static int verbose_mode = 0;
  43
  44 static char modecmd[32];
  45 static char libname[256];
  46
  47 #define TEMP_FILE "arXXXXXX"
  48 #define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
  49 #define SUFFIX ".com"
  50 #define SUFFIX_LEN (sizeof(SUFFIX) - 1)
  51
  52 static char *to_host_file_spec (char *filespec);
  53 static int is_regular_file (char *name);
  54
  55 #ifdef VMS
  56 static char new_host_filespec [255];
  57 static char filename_buff [256];
  58
  59 static int
  60 translate_unix (char *name, int type)
  61 {
  62   strcpy (filename_buff, name);
  63   return 0;
  64 }
  65 #endif
  66
  67 static char *
  68 to_host_file_spec (char *filespec)
  69 {
  70 #ifdef VMS
  71   if (strchr (filespec, ']') || strchr (filespec, ':'))
  72     return filespec;
  73   else
  74     {
  75       strcpy (filename_buff, filespec);
  76       decc$to_vms (filespec, translate_unix, 1, 1);
  77       strcpy (new_host_filespec, filename_buff);
  78       return new_host_filespec;
  79     }
  80 #else
  81   return filespec;
  82 #endif
  83 }
  84
  85 /* Check to see if the file named in NAME is a regular file, i.e. not a
  86    directory.  */
  87
  88 static int
  89 is_regular_file (char *name)
  90 {
  91   int ret;
  92   struct stat statbuf;
  93
  94   ret = stat (name, &statbuf);
  95   return !ret && S_ISREG (statbuf.st_mode);
  96 }
  97
  98 /* Add the argument contained in STR to the list of arguments to pass to the
  99    archiver.  */
 100
 101 static void
 102 addarg (const char *str)
 103 {
 104   if (++lib_arg_index >= lib_arg_max)
 105     {
 106       lib_arg_max += 1000;
 107       lib_args = XRESIZEVEC (const char *, lib_args, lib_arg_max);
 108     }
 109
 110   lib_args[lib_arg_index] = str;
 111 }
 112
 113 static void
 114 usage (void)
 115 {
 116   printf ("usage: ar -r [-cv] archive file...\n");
 117   printf ("       ar -c [-rv] archive file...\n");
 118   printf ("       ar -x [-v] archive [module...]\n");
 119 }
 120
 121 int
 122 main (int argc, char *argv[])
 123 {
 124   int i, nexti, iarg;
 125   FILE *comfile;
 126   int comfd;
 127   int outlen, maxoutlen = 4000;
 128   char temp_filename[] = TEMP_FILE SUFFIX;
 129   char command[256];
 130   int status;
 131
 132   if (argc < 2)
 133     {
 134       fprintf (stderr, "ar: no command or archive\n");
 135       exit (FATAL_EXIT_CODE);
 136     }
 137
 138   if (argv[1][0] != '-')
 139     {
 140       int arglen = strlen (argv[1]);
 141
 142       /* Compatibility mode.  */
 143       for (i = 0; i < arglen; i++)
 144         {
 145           if (argv[1][i] == 'r')
 146             {
 147               replace_mode = 1;
 148             }
 149           else if (argv[1][i] == 'c')
 150             {
 151               create_mode = 1;
 152             }
 153           else if (argv[1][i] == 'x')
 154             {
 155               extract_mode = 1;
 156             }
 157           else if (argv[1][i] == 'v')
 158             {
 159               verbose_mode = 1;
 160             }
 161           else
 162             {
 163               fprintf (stderr, "ar: unknown command '%c'\n", argv[1][i]);
 164               exit (FATAL_EXIT_CODE);
 165             }
 166         }
 167       nexti = 2;
 168     }
 169   else
 170     {
 171       /* Option mode.  */
 172       nexti = 1;
 173       for (i = 1; i < argc; i++)
 174         {
 175           if (argv[i][0] != '-')
 176             {
 177               nexti = i;
 178               break;
 179             }
 180           else if (strcmp (argv[i], "-r") == 0)
 181             {
 182               replace_mode = 1;
 183             }
 184           else if (strcmp (argv[i], "-c") == 0)
 185             {
 186               create_mode = 1;
 187             }
 188           else if (strcmp (argv[i], "-x") == 0)
 189             {
 190               extract_mode = 1;
 191             }
 192           else if (strcmp (argv[i], "-v") == 0)
 193             {
 194               verbose_mode = 1;
 195             }
 196           else if (strcmp (argv[i], "--help") == 0)
 197             {
 198               usage ();
 199               exit (EXIT_SUCCESS);
 200             }
 201           else
 202             {
 203               fprintf (stderr, "ar: unknown option %s\n", argv[i]);
 204               exit (FATAL_EXIT_CODE);
 205             }
 206         }
 207     }
 208
 209   if (extract_mode)
 210     {
 211       do
 212         {
 213           char *lname = argv[nexti];
 214           int lnamelen;
 215
 216           /* Next argument is the archive name.  */
 217           if (is_regular_file (lname))
 218             {
 219               addarg (xstrdup (to_host_file_spec (lname)));
 220               break;
 221             }
 222
 223           /* If not found, try with .olb instead of .a.  */
 224           lnamelen = strlen (lname);
 225
 226           if (lnamelen > 2
 227               && strcmp (&lname [lnamelen - 2], ".a") == 0)
 228             {
 229               char *nlibname;
 230
 231               nlibname = (char *)alloca (lnamelen + 3);
 232               strcpy (nlibname, lname);
 233               strcpy (&nlibname [lnamelen - 2], ".olb");
 234               if (is_regular_file (nlibname))
 235                 {
 236                   addarg (xstrdup (to_host_file_spec (nlibname)));
 237                   break;
 238                 }
 239             }
 240
 241           fprintf (stderr, "ar: file '%s' doesn't exist\n", lname);
 242           exit (FATAL_EXIT_CODE);
 243         } while (0);
 244     }
 245   else
 246     strcpy (libname, to_host_file_spec (argv[nexti]));
 247
 248   nexti++;
 249
 250   /* Build command mode.  */
 251   if (replace_mode)
 252     {
 253       strcat (modecmd, "/replace");
 254
 255       if (!is_regular_file (libname) || !replace_mode)
 256         {
 257           /* Really create if the archive doesn't exist.  */
 258           strcat (modecmd, "/create");
 259         }
 260     }
 261   else if (extract_mode)
 262     {
 263       if (nexti == argc)
 264         {
 265           /* Extract all.  */
 266           strcat (modecmd, "/extract=(*");
 267         }
 268       else
 269         strcat (modecmd, "/extract=(");
 270     }
 271
 272   /* Add files.  */
 273   for (i = nexti; i < argc; i++)
 274     {
 275       if (extract_mode)
 276         {
 277           /* Convert to module name (remove extension) and quote it.  */
 278           char *module = argv[i];
 279           int module_len = strlen (module);
 280           char *newarg = (char *)xmalloc (module_len + 3);
 281           int l;
 282
 283           newarg[0] = '"';
 284           memcpy (newarg + 1, module, module_len);
 285
 286           l = 1 + module_len;
 287           if (module_len > 4
 288               && strcmp (&module[module_len - 4], ".obj") == 0)
 289             l -= 4;
 290
 291           newarg[l] = '"';
 292           newarg[l + 1] = 0;
 293
 294           addarg (newarg);
 295         }
 296       else
 297         {
 298           /* Add the filename.  */
 299           addarg (xstrdup (to_host_file_spec (argv[i])));
 300         }
 301     }
 302
 303   if (extract_mode)
 304     addarg (")");
 305
 306   /* Create the command file name.  */
 307   strcpy (temp_filename, TEMP_FILE SUFFIX);
 308   comfd = mkstemps (temp_filename, SUFFIX_LEN);
 309   comfile = fdopen (comfd, "w");
 310
 311   /* Write the command file.
 312      We need to split to command into severals ones if it is too long.  */
 313   outlen = 0;
 314   for (iarg = 0; iarg <= lib_arg_index; iarg++)
 315     {
 316       if (outlen == 0)
 317         {
 318           fprintf (comfile, "$ library %s %s -\n", modecmd, libname);
 319           if (create_mode && iarg == 0)
 320             strcpy (modecmd, "/replace");
 321         }
 322
 323       fprintf (comfile, "%s", lib_args [iarg]);
 324       outlen += strlen (lib_args [iarg]) + 2;
 325
 326       if (outlen > maxoutlen || iarg == lib_arg_index)
 327         {
 328           /* Will write a new command.  */
 329           fprintf (comfile, "\n");
 330           outlen = 0;
 331         }
 332       else
 333         {
 334           /* Continuation line.  */
 335           fprintf (comfile, ",-\n");
 336         }
 337     }
 338
 339   fclose (comfile);
 340
 341   sprintf (command, "@%s", temp_filename);
 342
 343   status = system (command);
 344
 345   remove (temp_filename);
 346
 347   exit (status);
 348 }