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Annotation of GNUtools/cctools/as/input-file.h, revision 1.1.1.1

1.1       root        1: /* input_file.h header for input-file.c
                      2:    Copyright (C) 1987 Free Software Foundation, Inc.
                      3: 
                      4: This file is part of GAS, the GNU Assembler.
                      5: 
                      6: GAS is free software; you can redistribute it and/or modify
                      7: it under the terms of the GNU General Public License as published by
                      8: the Free Software Foundation; either version 1, or (at your option)
                      9: any later version.
                     10: 
                     11: GAS is distributed in the hope that it will be useful,
                     12: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     14: GNU General Public License for more details.
                     15: 
                     16: You should have received a copy of the GNU General Public License
                     17: along with GAS; see the file COPYING.  If not, write to
                     18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     19: 
                     20: /*"input_file.c":Operating-system dependant functions to read source files.*/
                     21: 
                     22: 
                     23: /*
                     24:  * No matter what the operating system, this module must provide the
                     25:  * following services to its callers.
                     26:  *
                     27:  * input_file_begin()                  Call once before anything else.
                     28:  *
                     29:  * input_file_end()                    Call once after everything else.
                     30:  *
                     31:  * input_file_buffer_size()            Call anytime. Returns largest possible
                     32:  *                                     delivery from
                     33:  *                                     input_file_give_next_buffer().
                     34:  *
                     35:  * input_file_open(name)               Call once for each input file.
                     36:  *
                     37:  * input_file_give_next_buffer(where)  Call once to get each new buffer.
                     38:  *                                     Return 0: no more chars left in file,
                     39:  *                                        the file has already been closed.
                     40:  *                                     Otherwise: return a pointer to just
                     41:  *                                        after the last character we read
                     42:  *                                        into the buffer.
                     43:  *                                     If we can only read 0 characters, then
                     44:  *                                     end-of-file is faked.
                     45:  *
                     46:  * All errors are reported (using as_perror) so caller doesn't have to think
                     47:  * about I/O errors. No I/O errors are fatal: an end-of-file may be faked.
                     48:  */
                     49: extern FILE *f_in;
                     50: extern char *file_name;
                     51: 
                     52: #ifdef SUSPECT
                     53: extern int preprocess;
                     54: #endif
                     55: 
                     56: extern void input_file_begin(
                     57:     void);
                     58: extern void input_file_end(
                     59:     void);
                     60: extern int input_file_buffer_size(
                     61:     void);
                     62: extern int input_file_is_open(
                     63:     void);
                     64: extern void input_file_open(
                     65:     char *filename,
                     66:     int pre);
                     67: extern char *input_file_give_next_buffer(
                     68:     char *where);

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