gcc/java/jv-scan.c

   1 /* Main for jv-scan
   2    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
   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, 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, 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 *gmsgid, ...)
  44      ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
  45 void warning (int opt, const char *gmsgid, ...) ATTRIBUTE_PRINTF_2;
  46 void warning0 (const char *gmsgid, ...) ATTRIBUTE_PRINTF_1;
  47 void report (void);
  48
  49 static void usage (void) ATTRIBUTE_NORETURN;
  50 static void help (void) ATTRIBUTE_NORETURN;
  51 static void version (void) ATTRIBUTE_NORETURN;
  52
  53 #define JC1_LITE
  54 #include "jcf.h"
  55 #include "parse.h"
  56
  57 /* Current input file and output file IO streams.  */
  58 FILE *finput, *out;
  59
  60 /* Executable name.  */
  61 char *exec_name;
  62
  63 struct line_maps line_table;
  64
  65 /* Flags matching command line options.  */
  66 int flag_find_main = 0;
  67 int flag_dump_class = 0;
  68 int flag_list_filename = 0;
  69 int flag_complexity = 0;
  70 int flag_assert = 1;
  71
  72 int pedantic = 0;
  73
  74 \f
  75
  76 /* This is used to mark options with no short value.  */
  77 #define LONG_OPT(Num)  ((Num) + 128)
  78
  79 #define OPT_HELP      LONG_OPT (0)
  80 #define OPT_VERSION   LONG_OPT (1)
  81 #define OPT_ENCODING  LONG_OPT (2)
  82
  83 static const struct option options[] =
  84 {
  85   { "help",      no_argument,       NULL, OPT_HELP },
  86   { "version",   no_argument,       NULL, OPT_VERSION },
  87   { "print-main", no_argument,      &flag_find_main, 1 },
  88   { "list-filename", no_argument,   &flag_list_filename, 1 },
  89   { "list-class", no_argument,      &flag_dump_class, 1 },
  90   { "encoding",  required_argument, NULL, OPT_ENCODING },
  91   { "complexity", no_argument,      &flag_complexity, 1 },
  92   { "no-assert", no_argument,       &flag_assert, 0 },
  93   { "assert",    no_argument,       &flag_assert, 1 },
  94   { NULL,        no_argument,       NULL, 0 }
  95 };
  96
  97 static void
  98 usage (void)
  99 {
 100   fprintf (stderr, _("Try 'jv-scan --help' for more information.\n"));
 101   exit (1);
 102 }
 103
 104 static void
 105 help (void)
 106 {
 107   printf (_("Usage: jv-scan [OPTION]... FILE...\n\n"));
 108   printf (_("Print useful information read from Java source files.\n\n"));
 109   printf (_("  --no-assert             Don't recognize the assert keyword\n"));
 110   printf (_("  --complexity            Print cyclomatic complexity of input file\n"));
 111   printf (_("  --encoding NAME         Specify encoding of input file\n"));
 112   printf (_("  --print-main            Print name of class containing 'main'\n"));
 113   printf (_("  --list-class            List all classes defined in file\n"));
 114   printf (_("  --list-filename         Print input filename when listing class names\n"));
 115   printf (_("  -o FILE                 Set output file name\n"));
 116   printf ("\n");
 117   printf (_("  --help                  Print this help, then exit\n"));
 118   printf (_("  --version               Print version number, then exit\n"));
 119   printf ("\n");
 120   printf (_("For bug reporting instructions, please see:\n"
 121             "%s.\n"), bug_report_url);
 122   exit (0);
 123 }
 124
 125 static void
 126 version (void)
 127 {
 128   printf ("jv-scan (GCC) %s\n\n", version_string);
 129   printf ("Copyright %s 2006 Free Software Foundation, Inc.\n", _("(C)"));
 130   printf (_("This is free software; see the source for copying conditions.  There is NO\n"
 131             "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"));
 132   exit (0);
 133 }
 134
 135 /* jc1-lite main entry point */
 136 int
 137 main (int argc, char **argv)
 138 {
 139   int i = 1;
 140   const char *output_file = NULL;
 141   const char *encoding = NULL;
 142   long ft;
 143   int opt;
 144
 145   exec_name = argv[0];
 146
 147   /* Default for output */
 148   out = stdout;
 149
 150   /* Unlock the stdio streams.  */
 151   unlock_std_streams ();
 152
 153   gcc_init_libintl ();
 154
 155   /* Process options first.  We use getopt_long and not
 156      getopt_long_only because we only support `--' long options here.  */
 157   while ((opt = getopt_long (argc, argv, "o:", options, NULL)) != -1)
 158     {
 159       switch (opt)
 160         {
 161         case 0:
 162           /* Already handled.  */
 163           break;
 164
 165         case 'o':
 166           output_file = optarg;
 167           break;
 168
 169         case OPT_HELP:
 170           help ();
 171           break;
 172
 173         case OPT_VERSION:
 174           version ();
 175           break;
 176
 177         case OPT_ENCODING:
 178           encoding = optarg;
 179           break;
 180
 181         default:
 182           usage ();
 183           break;
 184         }
 185     }
 186
 187   /* No flags? Do nothing */
 188   if (! flag_find_main && ! flag_dump_class && ! flag_complexity)
 189     return 0;
 190
 191   /* Check on bad usage */
 192   if (flag_find_main + flag_dump_class + flag_complexity > 1)
 193     fatal_error
 194       ("only one of '--print-main', '--list-class', and '--complexity' allowed");
 195
 196   if (output_file && !(out = fopen (output_file, "w")))
 197     fatal_error ("can't open output file '%s'", output_file);
 198
 199   ft = ftell (out);
 200
 201   gcc_obstack_init (&temporary_obstack);
 202   java_push_parser_context ();
 203
 204   for ( i = optind; i < argc; i++ )
 205     if (argv [i])
 206       {
 207         char *filename = argv[i];
 208         if ( (finput = fopen (filename, "r")) )
 209           {
 210             /* There's no point in trying to find the current encoding
 211                unless we are going to do something intelligent with it
 212                -- hence the test for iconv.  */
 213 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
 214             setlocale (LC_CTYPE, "");
 215             if (encoding == NULL)
 216               encoding = nl_langinfo (CODESET);
 217 #endif
 218             if (encoding == NULL || *encoding == '\0')
 219               encoding = DEFAULT_ENCODING;
 220
 221             main_input_filename = filename;
 222             java_init_lex (finput, encoding);
 223             ctxp->filename = filename;
 224             yyparse ();
 225             report ();
 226             if (ftell (out) != ft)
 227               fputc ('\n', out);
 228             ft = ftell (out);
 229             fclose (finput);
 230             reset_report ();
 231           }
 232         else
 233           fatal_error ("file not found '%s'", argv [i]);
 234       }
 235
 236   /* Flush and close */
 237   if (ftell (out) != ft)
 238     fputc ('\n', out);
 239   if (!output_file)
 240     fclose (out);
 241
 242   return 0;
 243 }
 244
 245 \f
 246
 247 /* Error report, memory, obstack initialization and other utility
 248    functions.  Use actually c-format msgid, but as functions with
 249    the same name elsewhere use gcc-internal-format, assume all users
 250    here use intersection between c-format and gcc-internal-format.  */
 251
 252 void
 253 fatal_error (const char *gmsgid, ...)
 254 {
 255   va_list ap;
 256   va_start (ap, gmsgid);
 257   fprintf (stderr, _("%s: error: "), exec_name);
 258   vfprintf (stderr, _(gmsgid), ap);
 259   fputc ('\n', stderr);
 260   va_end (ap);
 261   exit (1);
 262 }
 263
 264 void
 265 warning (int opt ATTRIBUTE_UNUSED, const char *gmsgid, ...)
 266 {
 267   va_list ap;
 268   va_start (ap, gmsgid);
 269   fprintf (stderr, _("%s: warning: "), exec_name);
 270   vfprintf (stderr, _(gmsgid), ap);
 271   fputc ('\n', stderr);
 272   va_end (ap);
 273 }
 274
 275 void
 276 warning0 (const char *gmsgid, ...)
 277 {
 278   va_list ap;
 279   va_start (ap, gmsgid);
 280   fprintf (stderr, _("%s: warning: "), exec_name);
 281   vfprintf (stderr, _(gmsgid), ap);
 282   fputc ('\n', stderr);
 283   va_end (ap);
 284 }
 285
 286 void
 287 fancy_abort (const char *file, int line, const char *func)
 288 {
 289   fatal_error ("abort in %s, at %s:%d", func, file, line);
 290 }