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| 5222 | serge | 1 | /* input_file.h header for input-file.c |
| 2 | Copyright 1987, 1992, 1993, 2000, 2003, 2005, 2006, 2007, 2012 |
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| 3 | Free Software Foundation, Inc. |
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| 4 | |||
| 5 | This file is part of GAS, the GNU Assembler. |
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| 6 | |||
| 7 | GAS is free software; you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation; either version 3, or (at your option) |
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| 10 | any later version. |
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| 11 | |||
| 12 | GAS is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |||
| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with GAS; see the file COPYING. If not, write to the Free |
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| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
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| 20 | 02110-1301, USA. */ |
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| 21 | |||
| 22 | /*"input_file.c":Operating-system dependant functions to read source files.*/ |
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| 23 | |||
| 24 | /* |
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| 25 | * No matter what the operating system, this module must provide the |
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| 26 | * following services to its callers. |
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| 27 | * |
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| 28 | * input_file_begin() Call once before anything else. |
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| 29 | * |
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| 30 | * input_file_end() Call once after everything else. |
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| 31 | * |
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| 32 | * input_file_buffer_size() Call anytime. Returns largest possible |
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| 33 | * delivery from |
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| 34 | * input_file_give_next_buffer(). |
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| 35 | * |
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| 36 | * input_file_open(name) Call once for each input file. |
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| 37 | * |
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| 38 | * input_file_give_next_buffer(where) Call once to get each new buffer. |
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| 39 | * Return 0: no more chars left in file, |
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| 40 | * the file has already been closed. |
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| 41 | * Otherwise: return a pointer to just |
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| 42 | * after the last character we read |
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| 43 | * into the buffer. |
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| 44 | * If we can only read 0 characters, then |
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| 45 | * end-of-file is faked. |
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| 46 | * |
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| 47 | * input_file_push() Push state, which can be restored |
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| 48 | * later. Does implicit input_file_begin. |
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| 49 | * Returns char * to saved state. |
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| 50 | * |
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| 51 | * input_file_pop (arg) Pops previously saved state. |
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| 52 | * |
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| 53 | * input_file_close () Closes opened file. |
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| 54 | * |
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| 55 | * All errors are reported so caller doesn't have to think |
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| 56 | * about I/O errors. |
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| 57 | */ |
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| 58 | |||
| 59 | char *input_file_give_next_buffer (char *where); |
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| 60 | char *input_file_push (void); |
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| 61 | size_t input_file_buffer_size (void); |
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| 62 | void input_file_begin (void); |
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| 63 | void input_file_close (void); |
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| 64 | void input_file_end (void); |
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| 65 | void input_file_open (char *filename, int pre); |
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| 66 | void input_file_pop (char *arg); |