source: history.c @ b470451

release-1.8release-1.9
Last change on this file since b470451 was b470451, checked in by Anders Kaseorg <andersk@mit.edu>, 11 years ago
history: Tell owl_history_store whether the new entry will be partial 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 */
[b470451]7  h->partial = false;           /* 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
[b470451]38void owl_history_store(owl_history *h, const char *line, bool partial)
[70b53ec]39{
[52f3507]40  int size;
[7d4fbcd]41
[10b866d]42  if (!h) return;
[12c35df]43  size=owl_list_get_size(&(h->hist));
44
[83a079a]45  owl_history_reset(h);
46
[43744ce]47  /* check if the line is the same as the last */
[5a9f6fe]48  if (owl_list_get_size(&(h->hist))>0) {
49    if (!strcmp(line, owl_list_get_element(&(h->hist), 0))) return;
50  }
51
[7d4fbcd]52  /* if we've reached the max history size, pop off the last element */
53  if (size>OWL_HISTORYSIZE) {
[ddbbcffa]54    g_free(owl_list_get_element(&(h->hist), size-1));
[7d4fbcd]55    owl_list_remove_element(&(h->hist), size-1);
56  }
57
58  /* add the new line */
[d4927a7]59  owl_list_prepend_element(&(h->hist), g_strdup(line));
[b470451]60  h->partial = partial;
[7d4fbcd]61}
62
[70b53ec]63void owl_history_reset(owl_history *h)
64{
[10b866d]65  if (!h) return;
[ad37b39]66
67  /* if partial is set, remove the first entry first */
68  if (h->partial) {
69    g_free(owl_list_get_element(&(h->hist), 0));
70    owl_list_remove_element(&(h->hist), 0);
[b470451]71    h->partial = false;
[ad37b39]72  }
73
[7d4fbcd]74  h->cur=0;
75}
76
[1e94c0b]77int owl_history_is_touched(const owl_history *h)
[70b53ec]78{
[10b866d]79  if (!h) return(0);
[9923144]80  return h->cur > 0;
[7d4fbcd]81}
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