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114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/* CPP main program, using CPP Library.
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Copyright (C) 1995, 1997 Free Software Foundation, Inc.
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Written by Per Bothner, 1994-95.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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In other words, you are welcome to use, share and improve this program.
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You are forbidden to forbid anyone else to use, share and improve
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what you give them. Help stamp out software-hoarding! */
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#ifndef EMACS
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#include "config.h"
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#include "system.h"
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#include "gansidecl.h"
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#else
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#include <stdio.h>
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extern char *getenv ();
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#endif /* not EMACS */
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#include "cpplib.h"
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char *progname;
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cpp_reader parse_in;
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cpp_options options;
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#ifdef abort
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/* More 'friendly' abort that prints the line and file.
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config.h can #define abort fancy_abort if you like that sort of thing. */
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void
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fatal (s)
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char *s;
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{
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fputs (s, stderr);
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exit (FATAL_EXIT_CODE);
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}
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void
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fancy_abort ()
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{
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fatal ("Internal gcc abort.");
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}
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#endif
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int
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main (argc, argv)
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int argc;
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char **argv;
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{
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char *p;
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int argi = 1; /* Next argument to handle. */
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struct cpp_options *opts = &options;
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p = argv[0] + strlen (argv[0]);
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while (p != argv[0] && p[-1] != '/') --p;
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progname = p;
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cpp_reader_init (&parse_in);
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parse_in.data = opts;
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cpp_options_init (opts);
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argi += cpp_handle_options (&parse_in, argc - argi , argv + argi);
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if (argi < argc && ! CPP_FATAL_ERRORS (&parse_in))
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cpp_fatal (&parse_in, "Invalid option `%s'", argv[argi]);
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if (CPP_FATAL_ERRORS (&parse_in))
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exit (FATAL_EXIT_CODE);
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parse_in.show_column = 1;
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if (! cpp_start_read (&parse_in, opts->in_fname))
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exit (FATAL_EXIT_CODE);
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/* Now that we know the input file is valid, open the output. */
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if (!opts->out_fname || !strcmp (opts->out_fname, ""))
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opts->out_fname = "stdout";
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else if (! freopen (opts->out_fname, "w", stdout))
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cpp_pfatal_with_name (&parse_in, opts->out_fname);
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for (;;)
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{
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enum cpp_token kind;
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if (! opts->no_output)
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{
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fwrite (parse_in.token_buffer, 1, CPP_WRITTEN (&parse_in), stdout);
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}
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CPP_SET_WRITTEN (&parse_in, 0);
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kind = cpp_get_token (&parse_in);
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if (kind == CPP_EOF)
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break;
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}
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cpp_finish (&parse_in);
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if (parse_in.errors)
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exit (FATAL_EXIT_CODE);
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exit (SUCCESS_EXIT_CODE);
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}
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