projects / thirdparty / gcc.git / blame
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| 1eee94d3 GM |
1 | (* SFIO.def provides a String interface to the opening routines of FIO. |
| 2 | ||
| a945c346 | 3 | Copyright (C) 2001-2024 Free Software Foundation, Inc. |
| 1eee94d3 GM |
4 | Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>. |
| 5 | ||
| 6 | This file is part of GNU Modula-2. | |
| 7 | ||
| 8 | GNU Modula-2 is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU General Public License as published by | |
| 10 | the Free Software Foundation; either version 3, or (at your option) | |
| 11 | any later version. | |
| 12 | ||
| 13 | GNU Modula-2 is distributed in the hope that it will be useful, but | |
| 14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 | General Public License for more details. | |
| 17 | ||
| 18 | Under Section 7 of GPL version 3, you are granted additional | |
| 19 | permissions described in the GCC Runtime Library Exception, version | |
| 20 | 3.1, as published by the Free Software Foundation. | |
| 21 | ||
| 22 | You should have received a copy of the GNU General Public License and | |
| 23 | a copy of the GCC Runtime Library Exception along with this program; | |
| 24 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 25 | <http://www.gnu.org/licenses/>. *) | |
| 26 | ||
| 27 | DEFINITION MODULE SFIO ; | |
| 28 | ||
| 29 | FROM DynamicStrings IMPORT String ; | |
| 30 | FROM FIO IMPORT File ; | |
| 31 | ||
| 32 | EXPORT QUALIFIED OpenToRead, OpenToWrite, OpenForRandom, Exists, WriteS, ReadS ; | |
| 33 | ||
| 34 | ||
| 35 | (* | |
| 36 | Exists - returns TRUE if a file named, fname exists for reading. | |
| 37 | *) | |
| 38 | ||
| 39 | PROCEDURE Exists (fname: String) : BOOLEAN ; | |
| 40 | ||
| 41 | ||
| 42 | (* | |
| 43 | OpenToRead - attempts to open a file, fname, for reading and | |
| 44 | it returns this file. | |
| 45 | The success of this operation can be checked by | |
| 46 | calling IsNoError. | |
| 47 | *) | |
| 48 | ||
| 49 | PROCEDURE OpenToRead (fname: String) : File ; | |
| 50 | ||
| 51 | ||
| 52 | (* | |
| 53 | OpenToWrite - attempts to open a file, fname, for write and | |
| 54 | it returns this file. | |
| 55 | The success of this operation can be checked by | |
| 56 | calling IsNoError. | |
| 57 | *) | |
| 58 | ||
| 59 | PROCEDURE OpenToWrite (fname: String) : File ; | |
| 60 | ||
| 61 | ||
| 62 | (* | |
| 63 | OpenForRandom - attempts to open a file, fname, for random access | |
| 64 | read or write and it returns this file. | |
| 65 | The success of this operation can be checked by | |
| 66 | calling IsNoError. | |
| 67 | towrite, determines whether the file should be | |
| 68 | opened for writing or reading. | |
| 69 | if towrite is TRUE or whether the previous file should | |
| 70 | be left alone, allowing this descriptor to seek | |
| 71 | and modify an existing file. | |
| 72 | *) | |
| 73 | ||
| 74 | PROCEDURE OpenForRandom (fname: String; towrite, newfile: BOOLEAN) : File ; | |
| 75 | ||
| 76 | ||
| 77 | (* | |
| 78 | WriteS - writes a string, s, to, file. It returns the String, s. | |
| 79 | *) | |
| 80 | ||
| 81 | PROCEDURE WriteS (file: File; s: String) : String ; | |
| 82 | ||
| 83 | ||
| 84 | (* | |
| 85 | ReadS - reads a string, s, from, file. It returns the String, s. | |
| 86 | It stops reading the string at the end of line or end of file. | |
| 87 | It consumes the newline at the end of line but does not place | |
| 88 | this into the returned string. | |
| 89 | *) | |
| 90 | ||
| 91 | PROCEDURE ReadS (file: File) : String ; | |
| 92 | ||
| 93 | ||
| 94 | END SFIO. |