[dab82f29] | 1 | /* Copyright (c) 2002,2003,2004,2009 James M. Kretchmar |
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| 2 | * |
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| 3 | * This file is part of Owl. |
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| 4 | * |
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| 5 | * Owl is free software: you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation, either version 3 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * Owl is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with Owl. If not, see <http://www.gnu.org/licenses/>. |
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| 17 | * |
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| 18 | * --------------------------------------------------------------- |
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| 19 | * |
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| 20 | * As of Owl version 2.1.12 there are patches contributed by |
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| 21 | * developers of the the branched BarnOwl project, Copyright (c) |
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| 22 | * 2006-2008 The BarnOwl Developers. All rights reserved. |
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| 23 | */ |
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| 24 | |
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[7d4fbcd] | 25 | #include "owl.h" |
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| 26 | |
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[1aee7d9] | 27 | static const char fileIdent[] = "$Id$"; |
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| 28 | |
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[70b53ec] | 29 | void owl_history_init(owl_history *h) |
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| 30 | { |
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[7d4fbcd] | 31 | owl_list_create(&(h->hist)); |
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[10b866d] | 32 | h->cur=0; /* current position in history */ |
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| 33 | h->touched=0; /* whether we've gone into history */ |
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| 34 | h->partial=0; /* is the 0th element is partially composed? */ |
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[12c35df] | 35 | h->repeats=1; /* by default we'll allow repeat entries */ |
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| 36 | } |
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| 37 | |
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| 38 | void owl_history_set_norepeats(owl_history *h) |
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| 39 | { |
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| 40 | h->repeats=0; |
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[7d4fbcd] | 41 | } |
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| 42 | |
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[70b53ec] | 43 | char *owl_history_get_prev(owl_history *h) |
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| 44 | { |
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[10b866d] | 45 | |
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| 46 | if (!h) return NULL; |
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[7d4fbcd] | 47 | h->touched=1; |
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| 48 | |
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| 49 | if (owl_list_get_size(&(h->hist))==0) return(NULL); |
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| 50 | |
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| 51 | if (h->cur == owl_list_get_size(&(h->hist))-1) { |
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| 52 | return(NULL); |
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| 53 | } |
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| 54 | |
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| 55 | h->cur++; |
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[10b866d] | 56 | |
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[7d4fbcd] | 57 | return(owl_list_get_element(&(h->hist), h->cur)); |
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| 58 | } |
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| 59 | |
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[70b53ec] | 60 | char *owl_history_get_next(owl_history *h) |
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| 61 | { |
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[10b866d] | 62 | if (!h) return NULL; |
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[7d4fbcd] | 63 | if (owl_list_get_size(&(h->hist))==0) return(NULL); |
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| 64 | if (h->cur==0) { |
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| 65 | return(NULL); |
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| 66 | } |
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| 67 | |
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| 68 | h->cur--; |
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| 69 | return(owl_list_get_element(&(h->hist), h->cur)); |
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| 70 | } |
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| 71 | |
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[70b53ec] | 72 | void owl_history_store(owl_history *h, char *line) |
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| 73 | { |
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[52f3507] | 74 | int size; |
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[7d4fbcd] | 75 | |
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[10b866d] | 76 | if (!h) return; |
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[12c35df] | 77 | size=owl_list_get_size(&(h->hist)); |
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| 78 | |
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[7d4fbcd] | 79 | /* if partial is set, remove the first entry first */ |
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| 80 | if (h->partial) { |
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| 81 | owl_list_remove_element(&(h->hist), 0); |
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| 82 | } |
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[10b866d] | 83 | |
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[5a9f6fe] | 84 | /* if repeats are disallowed, check if the line is the same as the last */ |
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| 85 | if (owl_list_get_size(&(h->hist))>0) { |
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| 86 | if (!strcmp(line, owl_list_get_element(&(h->hist), 0))) return; |
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| 87 | } |
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| 88 | |
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[7d4fbcd] | 89 | /* if we've reached the max history size, pop off the last element */ |
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| 90 | if (size>OWL_HISTORYSIZE) { |
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| 91 | owl_free(owl_list_get_element(&(h->hist), size-1)); |
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| 92 | owl_list_remove_element(&(h->hist), size-1); |
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| 93 | } |
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| 94 | |
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| 95 | /* add the new line */ |
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| 96 | owl_list_prepend_element(&(h->hist), owl_strdup(line)); |
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| 97 | } |
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| 98 | |
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[70b53ec] | 99 | void owl_history_set_partial(owl_history *h) |
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| 100 | { |
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[10b866d] | 101 | if (!h) return; |
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[7d4fbcd] | 102 | h->partial=1; |
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| 103 | } |
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| 104 | |
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[70b53ec] | 105 | void owl_history_reset(owl_history *h) |
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| 106 | { |
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[10b866d] | 107 | if (!h) return; |
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[7d4fbcd] | 108 | h->cur=0; |
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| 109 | h->touched=0; |
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| 110 | h->partial=0; |
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| 111 | } |
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| 112 | |
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[70b53ec] | 113 | int owl_history_is_touched(owl_history *h) |
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| 114 | { |
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[10b866d] | 115 | if (!h) return(0); |
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[7d4fbcd] | 116 | if (h->touched) return(1); |
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| 117 | return(0); |
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| 118 | } |
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