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