source: history.c @ 4f5e38f

release-1.8release-1.9
Last change on this file since 4f5e38f was d4927a7, checked in by Anders Kaseorg <andersk@mit.edu>, 11 years ago
Replace owl_strdup with g_strdup. Signed-off-by: Anders Kaseorg <andersk@mit.edu> Reviewed-by: Karl Ramm <kcr@mit.edu>
  • Property mode set to 100644
File size: 2.0 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  h->repeats=1;                 /* by default we'll allow repeat entries */
10}
11
12void owl_history_set_norepeats(owl_history *h)
13{
14  h->repeats=0;
15}
16
17const char *owl_history_get_prev(owl_history *h)
18{
19
20  if (!h) return NULL;
21  h->touched=1;
22
23  if (owl_list_get_size(&(h->hist))==0) return(NULL);
24
25  if (h->cur == owl_list_get_size(&(h->hist))-1) {
26    return(NULL);
27  }
28
29  h->cur++;
30
31  return(owl_list_get_element(&(h->hist), h->cur));
32}
33
34const char *owl_history_get_next(owl_history *h)
35{
36  if (!h) return NULL;
37  if (owl_list_get_size(&(h->hist))==0) return(NULL);
38  if (h->cur==0) {
39    return(NULL);
40  }
41
42  h->cur--;
43  return(owl_list_get_element(&(h->hist), h->cur));
44}
45
46void owl_history_store(owl_history *h, const char *line)
47{
48  int size;
49
50  if (!h) return;
51  size=owl_list_get_size(&(h->hist));
52
53  /* if partial is set, remove the first entry first */
54  if (h->partial) {
55    g_free(owl_list_get_element(&(h->hist), 0));
56    owl_list_remove_element(&(h->hist), 0);
57  }
58
59  /* if repeats are disallowed, check if the line is the same as the last */
60  if (owl_list_get_size(&(h->hist))>0) {
61    if (!strcmp(line, owl_list_get_element(&(h->hist), 0))) return;
62  }
63
64  /* if we've reached the max history size, pop off the last element */
65  if (size>OWL_HISTORYSIZE) {
66    g_free(owl_list_get_element(&(h->hist), size-1));
67    owl_list_remove_element(&(h->hist), size-1);
68  }
69
70  /* add the new line */
71  owl_list_prepend_element(&(h->hist), g_strdup(line));
72}
73
74void owl_history_set_partial(owl_history *h)
75{
76  if (!h) return;
77  h->partial=1;
78}
79
80void owl_history_reset(owl_history *h)
81{
82  if (!h) return;
83  h->cur=0;
84  h->touched=0;
85  h->partial=0;
86}
87
88int owl_history_is_touched(const owl_history *h)
89{
90  if (!h) return(0);
91  if (h->touched) return(1);
92  return(0);
93}
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