[8833] | 1 | /* CPP main program, using CPP Library. |
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| 2 | Copyright (C) 1995 Free Software Foundation, Inc. |
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| 3 | Written by Per Bothner, 1994-95. |
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| 4 | |
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| 5 | This program is free software; you can redistribute it and/or modify it |
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| 6 | under the terms of the GNU General Public License as published by the |
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| 7 | Free Software Foundation; either version 2, or (at your option) any |
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| 8 | later version. |
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| 9 | |
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| 10 | This program is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | GNU General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |
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| 19 | In other words, you are welcome to use, share and improve this program. |
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| 20 | You are forbidden to forbid anyone else to use, share and improve |
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| 21 | what you give them. Help stamp out software-hoarding! */ |
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| 22 | |
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| 23 | #include "cpplib.h" |
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| 24 | #include <stdio.h> |
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| 25 | |
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| 26 | #ifndef EMACS |
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| 27 | #include "config.h" |
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| 28 | #endif /* not EMACS */ |
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| 29 | |
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| 30 | extern char *getenv (); |
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| 31 | |
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| 32 | char *progname; |
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| 33 | |
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| 34 | cpp_reader parse_in; |
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| 35 | cpp_options options; |
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| 36 | |
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| 37 | /* More 'friendly' abort that prints the line and file. |
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| 38 | config.h can #define abort fancy_abort if you like that sort of thing. */ |
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| 39 | |
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| 40 | void |
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| 41 | fancy_abort () |
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| 42 | { |
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| 43 | fatal ("Internal gcc abort."); |
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| 44 | } |
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| 45 | |
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| 46 | |
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| 47 | int |
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| 48 | main (argc, argv) |
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| 49 | int argc; |
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| 50 | char **argv; |
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| 51 | { |
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| 52 | char *p; |
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| 53 | int i; |
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| 54 | int argi = 1; /* Next argument to handle. */ |
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| 55 | struct cpp_options *opts = &options; |
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| 56 | |
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| 57 | p = argv[0] + strlen (argv[0]); |
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| 58 | while (p != argv[0] && p[-1] != '/') --p; |
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| 59 | progname = p; |
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| 60 | |
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| 61 | init_parse_file (&parse_in); |
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| 62 | parse_in.data = opts; |
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| 63 | |
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| 64 | init_parse_options (opts); |
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| 65 | |
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| 66 | argi += cpp_handle_options (&parse_in, argc - argi , argv + argi); |
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| 67 | if (argi < argc) |
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| 68 | fatal ("Invalid option `%s'", argv[argi]); |
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| 69 | parse_in.show_column = 1; |
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| 70 | |
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| 71 | i = push_parse_file (&parse_in, opts->in_fname); |
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| 72 | if (i != SUCCESS_EXIT_CODE) |
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| 73 | return i; |
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| 74 | |
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| 75 | /* Now that we know the input file is valid, open the output. */ |
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| 76 | |
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| 77 | if (!opts->out_fname || !strcmp (opts->out_fname, "")) |
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| 78 | opts->out_fname = "stdout"; |
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| 79 | else if (! freopen (opts->out_fname, "w", stdout)) |
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| 80 | cpp_pfatal_with_name (&parse_in, opts->out_fname); |
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| 81 | |
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| 82 | for (;;) |
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| 83 | { |
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| 84 | enum cpp_token kind; |
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| 85 | if (! opts->no_output) |
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| 86 | { |
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| 87 | fwrite (parse_in.token_buffer, 1, CPP_WRITTEN (&parse_in), stdout); |
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| 88 | } |
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| 89 | parse_in.limit = parse_in.token_buffer; |
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| 90 | kind = cpp_get_token (&parse_in); |
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| 91 | if (kind == CPP_EOF) |
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| 92 | break; |
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| 93 | } |
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| 94 | |
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| 95 | cpp_finish (&parse_in); |
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| 96 | |
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| 97 | if (parse_in.errors) |
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| 98 | exit (FATAL_EXIT_CODE); |
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| 99 | exit (SUCCESS_EXIT_CODE); |
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| 100 | } |
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