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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