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-rw-r--r--src/wreadln.c316
1 files changed, 313 insertions, 3 deletions
diff --git a/src/wreadln.c b/src/wreadln.c
index d817ee628..2c8c55dd5 100644
--- a/src/wreadln.c
+++ b/src/wreadln.c
@@ -18,12 +18,18 @@
*
*/
+#include "config.h"
+
#include <stdlib.h>
#include <string.h>
-#include <ncurses.h>
#include <glib.h>
-#include "config.h"
+#ifdef USE_NCURSESW
+#include <ncursesw/ncurses.h>
+#else
+#include <ncurses.h>
+#endif
+
#include "wreadln.h"
#define KEY_CTRL_A 1
@@ -46,6 +52,10 @@ wrln_gcmp_post_cb_t wrln_post_completion_callback = NULL;
extern void screen_bell(void);
extern size_t my_strlen(char *str);
+
+#ifndef USE_NCURSESW
+/* libcurses version */
+
gchar *
wreadln(WINDOW *w,
gchar *prompt,
@@ -347,5 +357,305 @@ wreadln(WINDOW *w,
return g_realloc(line, strlen(line)+1);
}
-
+#else
+/* libcursesw version */
+
+gchar *
+wreadln(WINDOW *w,
+ gchar *prompt,
+ gchar *initial_value,
+ gint x1,
+ GList **history,
+ GCompletion *gcmp)
+{
+ GList *hlist = NULL, *hcurrent = NULL;
+ wchar_t *wline;
+ gchar *mbline;
+ gint x0, x, y, width, start;
+ gint cursor;
+ wint_t wch;
+ gint key;
+ gint i;
+
+ /* move the cursor to the beginning of the line */
+ void cursor_move_home(void) {
+ x=0;
+ cursor=0;
+ start=0;
+ }
+ /* move the cursor to the end of the line */
+ void cursor_move_to_eol(void) {
+ cursor = wcslen(wline);
+ //x=wcswidth(wline,cursor);
+ if( cursor+x0 >= x1 )
+ start = cursor-width+1;
+ }
+ /* move the cursor one step to the left */
+ void cursor_move_left(void) {
+ if( cursor > 0 )
+ {
+ if( cursor==start && start > 0 )
+ start--;
+ //x-=wcwidth(wline[cursor]);
+ cursor--;
+ }
+ }
+ /* move the cursor one step to the right */
+ void cursor_move_right(void) {
+ if( cursor < wcslen(wline) && cursor<wrln_max_line_size-1 )
+ {
+ //x +=wcwidth(wline[cursor]);
+ cursor++;
+ if( cursor+x0 >= x1 && start<cursor-width+1)
+ start++;
+ }
+ }
+ /* handle backspace */
+ void backspace() {
+ if( cursor > 0 )
+ {
+ for (i = cursor - 1; wline[i] != 0; i++)
+ wline[i] = wline[i + 1];
+ cursor_move_left();
+ }
+ }
+ /* handle delete */
+ void delete() {
+ if( cursor <= wcslen(wline) - 1 )
+ {
+ for (i = cursor; wline[i] != 0; i++)
+ wline[i] = wline[i + 1];
+ }
+ }
+ /* draw line buffer and update cursor position */
+ void drawline() {
+ wmove(w, y, x0);
+ /* clear input area */
+ whline(w, ' ', width);
+ /* print visible part of the line buffer */
+ waddnwstr(w, wline+start, width);
+ /* move the cursor to the correct position */
+ wmove(w, y, x0 + cursor-start);
+ /* tell ncurses to redraw the screen */
+ doupdate();
+ }
+
+ /* initialize variables */
+ start = 0;
+ x = 0;
+ cursor = 0;
+ mbline = NULL;
+
+ /* allocate a line buffer */
+ wline = g_malloc0(wrln_max_line_size*sizeof(wchar_t));
+ /* turn off echo */
+ noecho();
+ /* make shure the cursor is visible */
+ curs_set(1);
+ /* print prompt string */
+ if( prompt )
+ waddstr(w, prompt);
+ /* retrive y and x0 position */
+ getyx(w, y, x0);
+ /* check the x1 value */
+ if( x1<=x0 || x1>COLS )
+ x1 = COLS;
+ width = x1-x0;
+ /* clear input area */
+ mvwhline(w, y, x0, ' ', width);
+
+
+ if( history )
+ {
+ /* append the a new line to our history list */
+ *history = g_list_append(*history, g_malloc0(wrln_max_line_size));
+ /* hlist points to the current item in the history list */
+ hlist = g_list_last(*history);
+ hcurrent = hlist;
+ }
+ if( initial_value == (char *) -1 )
+ {
+ /* get previous history entry */
+ if( history && hlist->prev )
+ {
+ if( hlist==hcurrent )
+ {
+ /* save the current line */
+ //g_strlcpy(hlist->data, line, wrln_max_line_size);
+ }
+ /* get previous line */
+ hlist = hlist->prev;
+ mbstowcs(wline, hlist->data, wrln_max_line_size);
+ }
+ cursor_move_to_eol();
+ drawline();
+ }
+ else if( initial_value )
+ {
+ /* copy the initial value to the line buffer */
+ mbstowcs(wline, initial_value, wrln_max_line_size);
+ cursor_move_to_eol();
+ drawline();
+ }
+
+ wch=0;
+ key=0;
+ while( wch!=13 && wch!='\n' )
+ {
+ key = wget_wch(w, &wch);
+
+ if( key==KEY_CODE_YES )
+ {
+ /* function key */
+ switch(wch)
+ {
+ case KEY_HOME:
+ cursor_move_home();
+ break;
+ case KEY_END:
+ cursor_move_to_eol();
+ break;
+ case KEY_LEFT:
+ cursor_move_left();
+ break;
+ case KEY_RIGHT:
+ cursor_move_right();
+ break;
+ case KEY_DC:
+ delete();
+ break;
+ case KEY_BCKSPC:
+ case KEY_BACKSPACE:
+ backspace();
+ break;
+ case KEY_UP:
+ /* get previous history entry */
+ if( history && hlist->prev )
+ {
+ if( hlist==hcurrent )
+ {
+ /* save the current line */
+ wcstombs(hlist->data, wline, wrln_max_line_size);
+ }
+ /* get previous line */
+ hlist = hlist->prev;
+ mbstowcs(wline, hlist->data, wrln_max_line_size);
+ }
+ cursor_move_to_eol();
+ break;
+ case KEY_DOWN:
+ /* get next history entry */
+ if( history && hlist->next )
+ {
+ /* get next line */
+ hlist = hlist->next;
+ mbstowcs(wline, hlist->data, wrln_max_line_size);
+ }
+ cursor_move_to_eol();
+ break;
+ case KEY_RESIZE:
+ /* resize event */
+ if( x1>COLS )
+ {
+ x1=COLS;
+ width = x1-x0;
+ cursor_move_to_eol();
+ }
+ /* make shure the cursor is visible */
+ curs_set(1);
+ break;
+ }
+
+ }
+ else if( key!=ERR )
+ {
+ switch(wch)
+ {
+ case KEY_CTRL_A:
+ cursor_move_home();
+ break;
+ case KEY_CTRL_D:
+ delete();
+ break;
+ case KEY_CTRL_E:
+ cursor_move_to_eol();
+ break;
+ case KEY_CTRL_G:
+ screen_bell();
+ g_free(wline);
+ if( history )
+ {
+ g_free(hcurrent->data);
+ hcurrent->data = NULL;
+ *history = g_list_delete_link(*history, hcurrent);
+ }
+ return NULL;
+ case KEY_CTRL_K:
+ wline[cursor] = 0;
+ break;
+ case '\n':
+ case 13:
+ /* ignore char */
+ break;
+ default:
+ if( (wcslen(wline+cursor)) )
+ {
+ /* the cursor is not at the last pos */
+ wchar_t *tmp = NULL;
+ gsize len = (wcslen(wline+cursor)+1);
+ tmp = g_malloc0(len*sizeof(wchar_t));
+ wmemcpy(tmp, wline+cursor, len);
+ wline[cursor] = wch;
+ wline[cursor+1] = 0;
+ wcscat(&wline[cursor+1], tmp);
+ g_free(tmp);
+ cursor_move_right();
+ }
+ else
+ {
+ wline[cursor] = wch;
+ wline[cursor+1] = 0;
+ cursor_move_right();
+ }
+ }
+ }
+ drawline();
+ }
+
+ i = wcstombs(NULL,wline,0)+1;
+ mbline = g_malloc0(i);
+ wcstombs(mbline, wline, i);
+
+ /* update history */
+ if( history )
+ {
+ if( strlen(mbline) )
+ {
+ /* update the current history entry */
+ size_t size = strlen(mbline)+1;
+ hcurrent->data = g_realloc(hcurrent->data, size);
+ g_strlcpy(hcurrent->data, mbline, size);
+ }
+ else
+ {
+ /* the line was empty - remove the current history entry */
+ g_free(hcurrent->data);
+ hcurrent->data = NULL;
+ *history = g_list_delete_link(*history, hcurrent);
+ }
+
+ while( g_list_length(*history) > wrln_max_history_length )
+ {
+ GList *first = g_list_first(*history);
+
+ /* remove the oldest history entry */
+ g_free(first->data);
+ first->data = NULL;
+ *history = g_list_delete_link(*history, first);
+ }
+ }
+ return mbline;
+}
+
+#endif
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