(ratpoison_SOURCES): add editor.c editor.h

history.h and history.c

2 files changed, 141 insertions, 0 deletions

diff --git a/src/history.c b/src/history.c
new file mode 100644
index 0000000..20da719
--- /dev/null
+++ b/src/history.c
@@ -0,0 +1,127 @@
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+
+#include "ratpoison.h"
+#include "readline/history.h"
+
+static char *
+get_history_filename ()
+{
+  char *homedir = getenv ("HOME");
+  char *filename;
+
+  if (homedir)
+    {
+      filename = xmalloc (strlen (homedir) + strlen ("/" HISTORY_FILE) + 1);
+      sprintf (filename, "%s/" HISTORY_FILE, homedir);
+    }
+  else
+    {
+      filename = xstrdup (HISTORY_FILE);
+    }
+
+  return filename;
+}
+
+void
+history_load ()
+{
+  char *filename = get_history_filename ();
+
+  if (filename && read_history (filename) != 0)
+    PRINT_DEBUG (("ratpoison: could not read %s - %s\n", filename, strerror (errno)));
+
+  using_history();
+
+  free (filename);
+}
+
+void
+history_save ()
+{
+  char *filename = get_history_filename ();
+
+  using_history ();
+
+  if (filename && write_history (filename) != 0)
+    PRINT_ERROR (("ratpoison: could not write %s - %s\n", filename, strerror (errno)));
+
+  free (filename);
+}
+
+void
+history_resize (int size)
+{
+  stifle_history (size);
+}
+
+void
+history_reset ()
+{
+  using_history();
+}
+
+void
+history_add (char *item)
+{
+  HIST_ENTRY *h = history_get (history_length);
+  
+  if (item == NULL || *item == '\0' || isspace (*item) || (h != NULL && !strcmp (h->line, item)))
+    return;
+
+  PRINT_DEBUG (("Adding item: %s\n", item));
+  add_history (item);
+  using_history();
+}
+
+char *
+history_previous ()
+{
+  HIST_ENTRY *h = NULL;
+
+  h = previous_history();
+
+  return h ? h->line : NULL;
+}
+
+char *
+history_next ()
+{
+  HIST_ENTRY *h = NULL;
+
+  h = next_history();
+
+  return h ? h->line : NULL;
+}
+
+char *
+history_list_items ()
+{
+  HIST_ENTRY **hlist;
+  struct sbuf *list;
+  char *tmp;
+  int i;
+
+  list = sbuf_new (0);
+  hlist = history_list ();
+
+  if (!hlist) return NULL;
+
+  for (i = 0; hlist[i] != NULL; i++)
+    {
+      sbuf_concat (list, hlist[i]->line);
+      if (i < history_length - 1)
+        sbuf_concat (list, "\n");
+    }
+
+  tmp = sbuf_get (list);
+  free (list);
+
+  return tmp;
+}
+
+int history_expand_line (char *string, char **output)
+{
+  return history_expand (string, output);
+}
diff --git a/src/history.h b/src/history.h
new file mode 100644
index 0000000..f206cba
--- /dev/null
+++ b/src/history.h
@@ -0,0 +1,14 @@
+#ifndef _RATPOISON_HISTORY_H
+#define _RATPOISON_HISTORY_H 1
+
+void  history_load ();
+void  history_save ();
+void  history_resize (int size);
+void  history_reset ();
+void  history_add (char *item);
+char *history_next ();
+char *history_previous ();
+char *history_list_items ();
+int   history_expand_line (char *string, char **output);
+
+#endif /* ! _RATPOISON_HISTORY_H */