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| 1eee94d3 GM |
1 | (* StrLib.def provides string manipulation procedures. |
| 2 | ||
| 83ffe9cd | 3 | Copyright (C) 2001-2023 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 StrLib ; | |
| 28 | ||
| 29 | EXPORT QUALIFIED StrConCat, StrLen, StrCopy, StrEqual, StrLess, | |
| 30 | IsSubString, StrRemoveWhitePrefix ; | |
| 31 | ||
| 32 | ||
| 33 | (* | |
| 34 | StrConCat - combines a and b into c. | |
| 35 | *) | |
| 36 | ||
| 37 | PROCEDURE StrConCat (a, b: ARRAY OF CHAR; VAR c: ARRAY OF CHAR) ; | |
| 38 | ||
| 39 | ||
| 40 | (* | |
| 41 | StrLess - returns TRUE if string, a, alphabetically occurs before | |
| 42 | string, b. | |
| 43 | *) | |
| 44 | ||
| 45 | PROCEDURE StrLess (a, b: ARRAY OF CHAR) : BOOLEAN ; | |
| 46 | ||
| 47 | ||
| 48 | (* | |
| 49 | StrEqual - performs a = b on two strings. | |
| 50 | *) | |
| 51 | ||
| 52 | PROCEDURE StrEqual (a, b: ARRAY OF CHAR) : BOOLEAN ; | |
| 53 | ||
| 54 | ||
| 55 | (* | |
| 56 | StrLen - returns the length of string, a. | |
| 57 | *) | |
| 58 | ||
| 59 | PROCEDURE StrLen (a: ARRAY OF CHAR) : CARDINAL ; | |
| 60 | ||
| 61 | ||
| 62 | (* | |
| 63 | StrCopy - copy string src into string dest providing dest is large enough. | |
| 64 | If dest is smaller than a then src then the string is truncated when | |
| 65 | dest is full. Add a nul character if there is room in dest. | |
| 66 | *) | |
| 67 | ||
| 68 | PROCEDURE StrCopy (src: ARRAY OF CHAR ; VAR dest: ARRAY OF CHAR) ; | |
| 69 | ||
| 70 | ||
| 71 | (* | |
| 72 | IsSubString - returns true if b is a subcomponent of a. | |
| 73 | *) | |
| 74 | ||
| 75 | PROCEDURE IsSubString (a, b: ARRAY OF CHAR) : BOOLEAN ; | |
| 76 | ||
| 77 | ||
| 78 | (* | |
| 79 | StrRemoveWhitePrefix - copies string, into string, b, excluding any white | |
| 80 | space infront of a. | |
| 81 | *) | |
| 82 | ||
| 83 | PROCEDURE StrRemoveWhitePrefix (a: ARRAY OF CHAR; VAR b: ARRAY OF CHAR) ; | |
| 84 | ||
| 85 | ||
| 86 | END StrLib. |