[7d4fbcd] | 1 | #include "owl.h" |
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| 2 | |
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[70b53ec] | 3 | void owl_history_init(owl_history *h) |
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| 4 | { |
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[7d4fbcd] | 5 | owl_list_create(&(h->hist)); |
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[10b866d] | 6 | h->cur=0; /* current position in history */ |
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| 7 | h->touched=0; /* whether we've gone into history */ |
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| 8 | h->partial=0; /* is the 0th element is partially composed? */ |
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[12c35df] | 9 | h->repeats=1; /* by default we'll allow repeat entries */ |
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| 10 | } |
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| 11 | |
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| 12 | void owl_history_set_norepeats(owl_history *h) |
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| 13 | { |
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| 14 | h->repeats=0; |
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[7d4fbcd] | 15 | } |
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| 16 | |
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[e19eb97] | 17 | const char *owl_history_get_prev(owl_history *h) |
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[70b53ec] | 18 | { |
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[10b866d] | 19 | |
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| 20 | if (!h) return NULL; |
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[7d4fbcd] | 21 | h->touched=1; |
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| 22 | |
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| 23 | if (owl_list_get_size(&(h->hist))==0) return(NULL); |
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| 24 | |
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| 25 | if (h->cur == owl_list_get_size(&(h->hist))-1) { |
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| 26 | return(NULL); |
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| 27 | } |
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| 28 | |
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| 29 | h->cur++; |
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[10b866d] | 30 | |
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[7d4fbcd] | 31 | return(owl_list_get_element(&(h->hist), h->cur)); |
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| 32 | } |
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| 33 | |
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[e19eb97] | 34 | const char *owl_history_get_next(owl_history *h) |
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[70b53ec] | 35 | { |
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[10b866d] | 36 | if (!h) return NULL; |
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[7d4fbcd] | 37 | if (owl_list_get_size(&(h->hist))==0) return(NULL); |
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| 38 | if (h->cur==0) { |
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| 39 | return(NULL); |
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| 40 | } |
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| 41 | |
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| 42 | h->cur--; |
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| 43 | return(owl_list_get_element(&(h->hist), h->cur)); |
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| 44 | } |
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| 45 | |
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[e19eb97] | 46 | void owl_history_store(owl_history *h, const char *line) |
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[70b53ec] | 47 | { |
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[52f3507] | 48 | int size; |
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[7d4fbcd] | 49 | |
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[10b866d] | 50 | if (!h) return; |
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[12c35df] | 51 | size=owl_list_get_size(&(h->hist)); |
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| 52 | |
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[7d4fbcd] | 53 | /* if partial is set, remove the first entry first */ |
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| 54 | if (h->partial) { |
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| 55 | owl_list_remove_element(&(h->hist), 0); |
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| 56 | } |
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[10b866d] | 57 | |
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[5a9f6fe] | 58 | /* if repeats are disallowed, check if the line is the same as the last */ |
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| 59 | if (owl_list_get_size(&(h->hist))>0) { |
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| 60 | if (!strcmp(line, owl_list_get_element(&(h->hist), 0))) return; |
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| 61 | } |
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| 62 | |
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[7d4fbcd] | 63 | /* if we've reached the max history size, pop off the last element */ |
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| 64 | if (size>OWL_HISTORYSIZE) { |
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| 65 | owl_free(owl_list_get_element(&(h->hist), size-1)); |
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| 66 | owl_list_remove_element(&(h->hist), size-1); |
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| 67 | } |
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| 68 | |
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| 69 | /* add the new line */ |
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| 70 | owl_list_prepend_element(&(h->hist), owl_strdup(line)); |
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| 71 | } |
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| 72 | |
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[70b53ec] | 73 | void owl_history_set_partial(owl_history *h) |
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| 74 | { |
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[10b866d] | 75 | if (!h) return; |
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[7d4fbcd] | 76 | h->partial=1; |
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| 77 | } |
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| 78 | |
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[70b53ec] | 79 | void owl_history_reset(owl_history *h) |
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| 80 | { |
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[10b866d] | 81 | if (!h) return; |
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[7d4fbcd] | 82 | h->cur=0; |
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| 83 | h->touched=0; |
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| 84 | h->partial=0; |
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| 85 | } |
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| 86 | |
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[1e94c0b] | 87 | int owl_history_is_touched(const owl_history *h) |
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[70b53ec] | 88 | { |
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[10b866d] | 89 | if (!h) return(0); |
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[7d4fbcd] | 90 | if (h->touched) return(1); |
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| 91 | return(0); |
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| 92 | } |
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