From edc20ba4437a861b188b0477aac17b250ebcb5eb Mon Sep 17 00:00:00 2001
From: Lukas Fleischer <calcurse@cryptocrack.de>
Date: Wed, 1 Jun 2011 20:57:19 +0200
Subject: Split line editing functions into separate file

Move getstring() related stuff into a separate file as a first step on
our way to UTF-8 support for line editing helpers.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
---
 src/utils.c | 183 ------------------------------------------------------------
 1 file changed, 183 deletions(-)

(limited to 'src/utils.c')

diff --git a/src/utils.c b/src/utils.c
index c861195..1b91609 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -230,189 +230,6 @@ print_in_middle (WINDOW *win, int starty, int startx, int width, char *string)
   custom_remove_attr (win, ATTR_HIGHEST);
 }
 
-/* Print the string at the desired position. */
-static void
-showstring (WINDOW *win, int x, int y, char *str, int len, int scroff,
-            int curpos)
-{
-  char c = 0;
-
-  /* print string */
-  mvwaddnstr (win, y, x, &str[scroff], -1);
-  wclrtoeol (win);
-
-  /* print scrolling indicator */
-  if (scroff > 0 && scroff < len - col)
-    c = '*';
-  else if (scroff > 0)
-    c = '<';
-  else if (scroff < len - col)
-    c = '>';
-  mvwprintw (win, y, col - 1, "%c", c);
-
-  /* print cursor */
-  wmove (win, y, curpos - scroff);
-
-  if (curpos >= len)
-    waddch (win, SPACE | A_REVERSE);
-  else
-    waddch (win, str[curpos] | A_REVERSE);
-}
-
-/* Delete a character at the given position in string. */
-static void
-del_char (int pos, char *str)
-{
-  str += pos;
-  memmove (str, str + 1, strlen (str) + 1);
-}
-
-/* Add a character at the given position in string. */
-static void
-ins_char (int pos, int ch, char *str)
-{
-  str += pos;
-  memmove (str + 1, str, strlen (str) + 1);
-  *str = ch;
-}
-
-static void
-bell (void)
-{
-  printf ("\a");
-}
-
-/*
- * Getstring allows to get user input and to print it on a window,
- * even if noecho() is on. This function is also used to modify an existing
- * text (the variable string can be non-NULL).
- * We need to do the echoing manually because of the multi-threading
- * environment, otherwise the cursor would move from place to place without
- * control.
- */
-enum getstr
-getstring (WINDOW *win, char *str, int l, int x, int y)
-{
-  const int pgsize = col / 3;
-
-  int len = strlen (str);
-  int curpos = len;
-  int scroff = 0;
-  int ch;
-
-  custom_apply_attr (win, ATTR_HIGHEST);
-
-  for (;;) {
-    while (curpos < scroff)
-      scroff -= pgsize;
-    while (curpos >= scroff + col - 1)
-      scroff += pgsize;
-
-    showstring (win, x, y, str, len, scroff, curpos);
-    wins_doupdate ();
-
-    if ((ch = wgetch (win)) == '\n') break;
-    switch (ch)
-      {
-        case KEY_BACKSPACE:     /* delete one character */
-        case 330:
-        case 127:
-        case CTRL ('H'):
-          if (curpos > 0)
-            {
-              del_char ((--curpos), str);
-              len--;
-            }
-          else
-            bell ();
-          break;
-        case CTRL ('D'):        /* delete next character */
-          if (curpos < len)
-            {
-              del_char (curpos, str);
-              len--;
-            }
-          else
-            bell ();
-          break;
-        case CTRL ('W'):        /* delete a word */
-          if (curpos > 0) {
-            while (curpos && str[curpos - 1] == ' ')
-              {
-                del_char ((--curpos), str);
-                len--;
-              }
-            while (curpos && str[curpos - 1] != ' ')
-              {
-                del_char ((--curpos), str);
-                len--;
-              }
-          }
-          else
-            bell ();
-          break;
-        case CTRL ('K'):        /* delete to end-of-line */
-          str[curpos] = 0;
-          len = curpos;
-          break;
-        case CTRL ('A'):        /* go to begginning of string */
-          curpos = 0;
-          break;
-        case CTRL ('E'):        /* go to end of string */
-          curpos = len;
-          break;
-        case KEY_LEFT:          /* move one char backward  */
-        case CTRL ('B'):
-          if (curpos > 0) curpos--;
-          break;
-        case KEY_RIGHT:         /* move one char forward */
-        case CTRL ('F'):
-          if (curpos < len) curpos++;
-          break;
-        case ESCAPE:            /* cancel editing */
-          return (GETSTRING_ESC);
-          break;
-        default:                /* insert one character */
-          if (len < l - 1)
-            {
-              ins_char ((curpos++), ch, str);
-              len++;
-            }
-      }
-  }
-
-  custom_remove_attr (win, ATTR_HIGHEST);
-
-  return (len == 0 ? GETSTRING_RET : GETSTRING_VALID);
-}
-
-/* Update an already existing string. */
-int
-updatestring (WINDOW *win, char **str, int x, int y)
-{
-  int len = strlen (*str);
-  char *buf;
-  enum getstr ret;
-
-  EXIT_IF (len + 1 > BUFSIZ, _("Internal error: line too long"));
-
-  buf = mem_malloc (BUFSIZ);
-  (void)memcpy (buf, *str, len + 1);
-
-  ret = getstring (win, buf, BUFSIZ, x, y);
-
-  if (ret == GETSTRING_VALID)
-    {
-      len = strlen (buf);
-      *str = mem_realloc (*str, len + 1, 1);
-      EXIT_IF (*str == NULL, _("out of memory"));
-      (void)memcpy (*str, buf, len + 1);
-    }
-
-  mem_free (buf);
-  return ret;
-}
-
 /* checks if a string is only made of digits */
 int
 is_all_digit (char *string)
-- 
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