| 8262a224 |
1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: dspool.c,v 1.1 1999/05/21 22:15:26 mdw Exp $ |
| 4 | * |
| 5 | * Provide pools of strings |
| 6 | * |
| 7 | * (c) 1999 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of the mLib utilities library. |
| 13 | * |
| 14 | * mLib is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU Library General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of the |
| 17 | * License, or (at your option) any later version. |
| 18 | * |
| 19 | * mLib is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU Library General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU Library General Public |
| 25 | * License along with mLib; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Revision history --------------------------------------------------* |
| 30 | * |
| 31 | * $Log: dspool.c,v $ |
| 32 | * Revision 1.1 1999/05/21 22:15:26 mdw |
| 33 | * Dynamic string pool system, based on an idea from the `sw-tools' |
| 34 | * project. Could do with more work to make it really good. |
| 35 | * |
| 36 | */ |
| 37 | |
| 38 | /*----- Header files ------------------------------------------------------*/ |
| 39 | |
| 40 | #include <stdio.h> |
| 41 | |
| 42 | #include "dspool.h" |
| 43 | #include "dstr.h" |
| 44 | #include "sub.h" |
| 45 | |
| 46 | /*----- Main code ---------------------------------------------------------*/ |
| 47 | |
| 48 | /* --- @dspool_create@ --- * |
| 49 | * |
| 50 | * Arguments: @dspool *p@ = address of pool to create |
| 51 | * @size_t isz@ = initial size of new strings |
| 52 | * |
| 53 | * Returns: --- |
| 54 | * |
| 55 | * Use: Initializes a dynamic string pool. |
| 56 | */ |
| 57 | |
| 58 | void dspool_create(dspool *p, size_t isz) |
| 59 | { |
| 60 | p->free = 0; |
| 61 | p->isz = isz; |
| 62 | } |
| 63 | |
| 64 | /* --- @dspool_destroy@ --- * |
| 65 | * |
| 66 | * Arguments: @dspool *p@ = pool to destroy |
| 67 | * |
| 68 | * Returns: --- |
| 69 | * |
| 70 | * Use: Releases all of the strings left in the pool. Any strings |
| 71 | * not put back into the pool aren't freed. However, the pool |
| 72 | * is still valid, and the active strings can be put back and |
| 73 | * released later. |
| 74 | */ |
| 75 | |
| 76 | void dspool_destroy(dspool *p) |
| 77 | { |
| 78 | dspoolstr *s = p->free; |
| 79 | while (s) { |
| 80 | dspoolstr *n = s->next; |
| 81 | DDESTROY(&s->ds); |
| 82 | DESTROY(s); |
| 83 | s = n; |
| 84 | } |
| 85 | p->free = 0; |
| 86 | } |
| 87 | |
| 88 | /* --- @dspool_get@ --- * |
| 89 | * |
| 90 | * Arguments: @dspool *p@ = pointer to a string pool |
| 91 | * |
| 92 | * Returns: Pointer to a dynamic string. |
| 93 | * |
| 94 | * Use: Fetches a string from the pool. The string has space for at |
| 95 | * least @isz@ characters (where @isz@ is the size passed to |
| 96 | * @dspool_create@ for the pool). |
| 97 | */ |
| 98 | |
| 99 | dstr *dspool_get(dspool *p) { dstr *d; DSGET(p, d); return (d); } |
| 100 | |
| 101 | /* --- @dspool_put@ --- * |
| 102 | * |
| 103 | * Arguments: @dspool *p@ = pointer to a string pool |
| 104 | * @dstr *d@ = pointer to a dynamic string from a string pool |
| 105 | * |
| 106 | * Returns: --- |
| 107 | * |
| 108 | * Use: Releases a dynamic string back into a string pool. It |
| 109 | * doesn't have to be the same pool the string actually came |
| 110 | * from, although it does have to have come from some string |
| 111 | * pool. |
| 112 | */ |
| 113 | |
| 114 | void dspool_put(dspool *p, dstr *d) { DSPUT(p, d); } |
| 115 | |
| 116 | /*----- That's all, folks -------------------------------------------------*/ |
~mdw / mLib / blame