source: history.c @ 43744ce

release-1.8release-1.9
Last change on this file since 43744ce was 43744ce, checked in by Anders Kaseorg <andersk@mit.edu>, 10 years ago
history: Remove unused repeats flag Signed-off-by: Anders Kaseorg <andersk@mit.edu>
  • Property mode set to 100644
File size: 1.8 KB
Line 
1#include "owl.h"
2
3void owl_history_init(owl_history *h)
4{
5  owl_list_create(&(h->hist));
6  h->cur=0;                     /* current position in history */
7  h->touched=0;                 /* whether we've gone into history */
8  h->partial=0;                 /* is the 0th element is partially composed? */
9}
10
11const char *owl_history_get_prev(owl_history *h)
12{
13
14  if (!h) return NULL;
15  h->touched=1;
16
17  if (owl_list_get_size(&(h->hist))==0) return(NULL);
18
19  if (h->cur == owl_list_get_size(&(h->hist))-1) {
20    return(NULL);
21  }
22
23  h->cur++;
24
25  return(owl_list_get_element(&(h->hist), h->cur));
26}
27
28const char *owl_history_get_next(owl_history *h)
29{
30  if (!h) return NULL;
31  if (owl_list_get_size(&(h->hist))==0) return(NULL);
32  if (h->cur==0) {
33    return(NULL);
34  }
35
36  h->cur--;
37  return(owl_list_get_element(&(h->hist), h->cur));
38}
39
40void owl_history_store(owl_history *h, const char *line)
41{
42  int size;
43
44  if (!h) return;
45  size=owl_list_get_size(&(h->hist));
46
47  /* if partial is set, remove the first entry first */
48  if (h->partial) {
49    g_free(owl_list_get_element(&(h->hist), 0));
50    owl_list_remove_element(&(h->hist), 0);
51  }
52
53  /* check if the line is the same as the last */
54  if (owl_list_get_size(&(h->hist))>0) {
55    if (!strcmp(line, owl_list_get_element(&(h->hist), 0))) return;
56  }
57
58  /* if we've reached the max history size, pop off the last element */
59  if (size>OWL_HISTORYSIZE) {
60    g_free(owl_list_get_element(&(h->hist), size-1));
61    owl_list_remove_element(&(h->hist), size-1);
62  }
63
64  /* add the new line */
65  owl_list_prepend_element(&(h->hist), g_strdup(line));
66}
67
68void owl_history_set_partial(owl_history *h)
69{
70  if (!h) return;
71  h->partial=1;
72}
73
74void owl_history_reset(owl_history *h)
75{
76  if (!h) return;
77  h->cur=0;
78  h->touched=0;
79  h->partial=0;
80}
81
82int owl_history_is_touched(const owl_history *h)
83{
84  if (!h) return(0);
85  if (h->touched) return(1);
86  return(0);
87}
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