source: history.c @ 83a079a

release-1.8release-1.9
Last change on this file since 83a079a was 83a079a, checked in by Anders Kaseorg <andersk@mit.edu>, 10 years ago
history: Make owl_history_store also reset It doesn’t make sense to run owl_history_store without owl_history_reset (except in one case where we know the current position is already the beginning and we’re about to owl_history_set_partial), so let’s merge these functions. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
  • Property mode set to 100644
File size: 1.7 KB
RevLine 
[7d4fbcd]1#include "owl.h"
2
[70b53ec]3void owl_history_init(owl_history *h)
4{
[7d4fbcd]5  owl_list_create(&(h->hist));
[10b866d]6  h->cur=0;                     /* current position in history */
7  h->partial=0;                 /* is the 0th element is partially composed? */
[7d4fbcd]8}
9
[e19eb97]10const char *owl_history_get_prev(owl_history *h)
[70b53ec]11{
[10b866d]12
13  if (!h) return NULL;
[7d4fbcd]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++;
[10b866d]22
[7d4fbcd]23  return(owl_list_get_element(&(h->hist), h->cur));
24}
25
[e19eb97]26const char *owl_history_get_next(owl_history *h)
[70b53ec]27{
[10b866d]28  if (!h) return NULL;
[7d4fbcd]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
[e19eb97]38void owl_history_store(owl_history *h, const char *line)
[70b53ec]39{
[52f3507]40  int size;
[7d4fbcd]41
[10b866d]42  if (!h) return;
[12c35df]43  size=owl_list_get_size(&(h->hist));
44
[7d4fbcd]45  /* if partial is set, remove the first entry first */
46  if (h->partial) {
[ddbbcffa]47    g_free(owl_list_get_element(&(h->hist), 0));
[7d4fbcd]48    owl_list_remove_element(&(h->hist), 0);
49  }
[10b866d]50
[83a079a]51  owl_history_reset(h);
52
[43744ce]53  /* check if the line is the same as the last */
[5a9f6fe]54  if (owl_list_get_size(&(h->hist))>0) {
55    if (!strcmp(line, owl_list_get_element(&(h->hist), 0))) return;
56  }
57
[7d4fbcd]58  /* if we've reached the max history size, pop off the last element */
59  if (size>OWL_HISTORYSIZE) {
[ddbbcffa]60    g_free(owl_list_get_element(&(h->hist), size-1));
[7d4fbcd]61    owl_list_remove_element(&(h->hist), size-1);
62  }
63
64  /* add the new line */
[d4927a7]65  owl_list_prepend_element(&(h->hist), g_strdup(line));
[7d4fbcd]66}
67
[70b53ec]68void owl_history_set_partial(owl_history *h)
69{
[10b866d]70  if (!h) return;
[7d4fbcd]71  h->partial=1;
72}
73
[70b53ec]74void owl_history_reset(owl_history *h)
75{
[10b866d]76  if (!h) return;
[7d4fbcd]77  h->cur=0;
78  h->partial=0;
79}
80
[1e94c0b]81int owl_history_is_touched(const owl_history *h)
[70b53ec]82{
[10b866d]83  if (!h) return(0);
[9923144]84  return h->cur > 0;
[7d4fbcd]85}
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