gcc/java/jv-scan.c

   1 /* Main for jv-scan
   2    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
   3    Free Software Foundation, Inc.
   4    Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com)
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "intl.h"
  28
  29 #include "obstack.h"            /* We use obstacks in lex.c */
  30
  31 #include "version.h"
  32
  33 #ifdef HAVE_LOCALE_H
  34 #include <locale.h>
  35 #endif
  36
  37 #ifdef HAVE_LANGINFO_CODESET
  38 #include <langinfo.h>
  39 #endif
  40
  41 #include <getopt.h>
  42
  43 extern void fatal_error (const char *msgid, ...)
  44      ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
  45 void warning (const char *msgid, ...) ATTRIBUTE_PRINTF_1;
  46 void report (void);
  47
  48 static void usage (void) ATTRIBUTE_NORETURN;
  49 static void help (void) ATTRIBUTE_NORETURN;
  50 static void version (void) ATTRIBUTE_NORETURN;
  51
  52 #define JC1_LITE
  53 #include "jcf.h"
  54 #include "parse.h"
  55
  56 /* Current input file and output file IO streams.  */
  57 FILE *finput, *out;
  58
  59 /* Executable name.  */
  60 char *exec_name;
  61
  62 struct line_maps line_table;
  63
  64 /* Flags matching command line options.  */
  65 int flag_find_main = 0;
  66 int flag_dump_class = 0;
  67 int flag_list_filename = 0;
  68 int flag_complexity = 0;
  69 int flag_assert = 1;
  70
  71 int pedantic = 0;
  72
  73 \f
  74
  75 /* This is used to mark options with no short value.  */
  76 #define LONG_OPT(Num)  ((Num) + 128)
  77
  78 #define OPT_HELP      LONG_OPT (0)
  79 #define OPT_VERSION   LONG_OPT (1)
  80 #define OPT_ENCODING  LONG_OPT (2)
  81
  82 static const struct option options[] =
  83 {
  84   { "help",      no_argument,       NULL, OPT_HELP },
  85   { "version",   no_argument,       NULL, OPT_VERSION },
  86   { "print-main", no_argument,      &flag_find_main, 1 },
  87   { "list-filename", no_argument,   &flag_list_filename, 1 },
  88   { "list-class", no_argument,      &flag_dump_class, 1 },
  89   { "encoding",  required_argument, NULL, OPT_ENCODING },
  90   { "complexity", no_argument,      &flag_complexity, 1 },
  91   { "no-assert", no_argument,       &flag_assert, 0 },
  92   { "assert",    no_argument,       &flag_assert, 1 },
  93   { NULL,        no_argument,       NULL, 0 }
  94 };
  95
  96 static void
  97 usage (void)
  98 {
  99   fprintf (stderr, _("Try 'jv-scan --help' for more information.\n"));
 100   exit (1);
 101 }
 102
 103 static void
 104 help (void)
 105 {
 106   printf (_("Usage: jv-scan [OPTION]... FILE...\n\n"));
 107   printf (_("Print useful information read from Java source files.\n\n"));
 108   printf (_("  --no-assert             Don't recognize the assert keyword\n"));
 109   printf (_("  --complexity            Print cyclomatic complexity of input file\n"));
 110   printf (_("  --encoding NAME         Specify encoding of input file\n"));
 111   printf (_("  --print-main            Print name of class containing 'main'\n"));
 112   printf (_("  --list-class            List all classes defined in file\n"));
 113   printf (_("  --list-filename         Print input filename when listing class names\n"));
 114   printf (_("  -o FILE                 Set output file name\n"));
 115   printf ("\n");
 116   printf (_("  --help                  Print this help, then exit\n"));
 117   printf (_("  --version               Print version number, then exit\n"));
 118   printf ("\n");
 119   printf (_("For bug reporting instructions, please see:\n"
 120             "%s.\n"), bug_report_url);
 121   exit (0);
 122 }
 123
 124 static void
 125 version (void)
 126 {
 127   printf ("jv-scan (GCC) %s\n\n", version_string);
 128   printf ("Copyright %s 2004 Free Software Foundation, Inc.\n", _("(C)"));
 129   printf (_("This is free software; see the source for copying conditions.  There is NO\n"
 130             "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"));
 131   exit (0);
 132 }
 133
 134 /* jc1-lite main entry point */
 135 int
 136 main (int argc, char **argv)
 137 {
 138   int i = 1;
 139   const char *output_file = NULL;
 140   const char *encoding = NULL;
 141   long ft;
 142   int opt;
 143
 144   exec_name = argv[0];
 145
 146   /* Default for output */
 147   out = stdout;
 148
 149   gcc_init_libintl ();
 150
 151   /* Process options first.  We use getopt_long and not
 152      getopt_long_only because we only support `--' long options here.  */
 153   while ((opt = getopt_long (argc, argv, "o:", options, NULL)) != -1)
 154     {
 155       switch (opt)
 156         {
 157         case 0:
 158           /* Already handled.  */
 159           break;
 160
 161         case 'o':
 162           output_file = optarg;
 163           break;
 164
 165         case OPT_HELP:
 166           help ();
 167           break;
 168
 169         case OPT_VERSION:
 170           version ();
 171           break;
 172
 173         case OPT_ENCODING:
 174           encoding = optarg;
 175           break;
 176
 177         default:
 178           usage ();
 179           break;
 180         }
 181     }
 182
 183   /* No flags? Do nothing */
 184   if (! flag_find_main && ! flag_dump_class && ! flag_complexity)
 185     return 0;
 186
 187   /* Check on bad usage */
 188   if (flag_find_main + flag_dump_class + flag_complexity > 1)
 189     fatal_error
 190       ("only one of '--print-main', '--list-class', and '--complexity' allowed");
 191
 192   if (output_file && !(out = fopen (output_file, "w")))
 193     fatal_error ("can't open output file '%s'", output_file);
 194
 195   ft = ftell (out);
 196
 197   gcc_obstack_init (&temporary_obstack);
 198   java_push_parser_context ();
 199
 200   for ( i = optind; i < argc; i++ )
 201     if (argv [i])
 202       {
 203         char *filename = argv[i];
 204         if ( (finput = fopen (filename, "r")) )
 205           {
 206             /* There's no point in trying to find the current encoding
 207                unless we are going to do something intelligent with it
 208                -- hence the test for iconv.  */
 209 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
 210             setlocale (LC_CTYPE, "");
 211             if (encoding == NULL)
 212               encoding = nl_langinfo (CODESET);
 213 #endif
 214             if (encoding == NULL || *encoding == '\0')
 215               encoding = DEFAULT_ENCODING;
 216
 217             main_input_filename = filename;
 218             java_init_lex (finput, encoding);
 219             ctxp->filename = filename;
 220             yyparse ();
 221             report ();
 222             if (ftell (out) != ft)
 223               fputc ('\n', out);
 224             ft = ftell (out);
 225             fclose (finput);
 226             reset_report ();
 227           }
 228         else
 229           fatal_error ("file not found '%s'", argv [i]);
 230       }
 231
 232   /* Flush and close */
 233   if (ftell (out) != ft)
 234     fputc ('\n', out);
 235   if (!output_file)
 236     fclose (out);
 237
 238   return 0;
 239 }
 240
 241 \f
 242
 243 /* Error report, memory, obstack initialization and other utility
 244    functions */
 245
 246 void
 247 fatal_error (const char *msgid, ...)
 248 {
 249   va_list ap;
 250   va_start (ap, msgid);
 251   fprintf (stderr, _("%s: error: "), exec_name);
 252   vfprintf (stderr, _(msgid), ap);
 253   fputc ('\n', stderr);
 254   va_end (ap);
 255   exit (1);
 256 }
 257
 258 void
 259 warning (const char *msgid, ...)
 260 {
 261   va_list ap;
 262   va_start (ap, msgid);
 263   fprintf (stderr, _("%s: warning: "), exec_name);
 264   vfprintf (stderr, _(msgid), ap);
 265   fputc ('\n', stderr);
 266   va_end (ap);
 267 }
 268
 269 void
 270 fancy_abort (const char *file, int line, const char *func)
 271 {
 272   fatal_error ("abort in %s, at %s:%d", func, file, line);
 273 }