![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/wreadln.c b/src/wreadln.c
index dc1dfe86708f629d8eeb80bff240e03df6c20b86..95267e28d539d28a79b77cf734c23e1a67320fcb 100644 (file)
--- a/src/wreadln.c
+++ b/src/wreadln.c
-/*
- * $Id$
- *
- * (c) 2004 by Kalle Wallin <kaw@linux.se>
+/* ncmpc (Ncurses MPD Client)
+ * (c) 2004-2017 The Music Player Daemon Project
+ * Project homepage: http://musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "config.h"
-
#include "wreadln.h"
+#include "charset.h"
+#include "screen_utils.h"
+#include "config.h"
+#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
-#ifdef USE_NCURSESW
-#include <ncursesw/ncurses.h>
-#else
-#include <ncurses.h>
+#if (defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)) && !defined(WIN32)
+#include <sys/poll.h>
#endif
#define KEY_CTRL_A 1
#define KEY_CTRL_N 14
#define KEY_CTRL_P 16
#define KEY_CTRL_U 21
+#define KEY_CTRL_W 23
#define KEY_CTRL_Z 26
#define KEY_BCKSPC 8
#define TAB 9
-#define WRLN_MAX_LINE_SIZE 1024
-#define WRLN_MAX_HISTORY_LENGTH 32
-
-guint wrln_max_line_size = WRLN_MAX_LINE_SIZE;
-guint wrln_max_history_length = WRLN_MAX_HISTORY_LENGTH;
-wrln_wgetch_fn_t wrln_wgetch = NULL;
+struct wreadln {
+ /** the ncurses window where this field is displayed */
+ WINDOW *const w;
+
+ /** the origin coordinates in the window */
+ unsigned x, y;
+
+ /** the screen width of the input field */
+ unsigned width;
+
+ /** is the input masked, i.e. characters displayed as '*'? */
+ const gboolean masked;
+
+ /** the byte position of the cursor */
+ size_t cursor;
+
+ /** the byte position displayed at the origin (for horizontal
+ scrolling) */
+ size_t start;
+
+ /** the current value */
+ gchar line[1024];
+};
+
+/** max items stored in the history list */
+static const guint wrln_max_history_length = 32;
+
+#ifndef NCMPC_MINI
void *wrln_completion_callback_data = NULL;
wrln_gcmp_pre_cb_t wrln_pre_completion_callback = NULL;
wrln_gcmp_post_cb_t wrln_post_completion_callback = NULL;
+#endif
-extern void sigstop(void);
-extern void screen_bell(void);
-extern size_t my_strlen(char *str);
+/** converts a byte position to a screen column */
+static unsigned
+byte_to_screen(const gchar *data, size_t x)
+{
+#if defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)
+ assert(x <= strlen(data));
-#ifndef USE_NCURSESW
-/* move the cursor one step to the right */
-static inline void cursor_move_right(gint *cursor,
- gint *start,
- gint width,
- gint x0,
- gint x1,
- gchar *line)
+ char *dup = g_strdup(data);
+ dup[x] = 0;
+ char *p = replace_locale_to_utf8(dup);
+
+ unsigned width = utf8_width(p);
+ g_free(p);
+
+ return width;
+#else
+ (void)data;
+
+ return (unsigned)x;
+#endif
+}
+
+/** finds the first character which doesn't fit on the screen */
+static size_t
+screen_to_bytes(const gchar *data, unsigned width)
{
- if (*cursor < (int)strlen(line) &&
- *cursor < (int)wrln_max_line_size - 1) {
- (*cursor)++;
- if (*cursor + x0 >= x1 && *start < *cursor - width + 1)
- (*start)++;
+#if defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)
+ size_t length = strlen(data);
+ gchar *dup = g_strdup(data);
+
+ while (true) {
+ dup[length] = 0;
+ char *p = locale_to_utf8(dup);
+ unsigned p_width = utf8_width(p);
+ g_free(p);
+ if (p_width <= width)
+ break;
+
+ --length;
}
+
+ g_free(dup);
+
+ return length;
+#else
+ (void)data;
+
+ return (size_t)width;
+#endif
+}
+
+/** returns the screen column where the cursor is located */
+static unsigned
+cursor_column(const struct wreadln *wr)
+{
+ return byte_to_screen(wr->line + wr->start,
+ wr->cursor - wr->start);
+}
+
+/** returns the offset in the string to align it at the right border
+ of the screen */
+static inline size_t
+right_align_bytes(const gchar *data, size_t right, unsigned width)
+{
+#if defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)
+ gchar *dup;
+ size_t start = 0;
+
+ assert(right <= strlen(data));
+
+ dup = g_strdup(data);
+ dup[right] = 0;
+
+ while (dup[start] != 0) {
+ char *p = locale_to_utf8(dup + start), *q;
+ unsigned p_width = utf8_width(p);
+
+ if (p_width < width) {
+ g_free(p);
+ break;
+ }
+
+ gunichar c = g_utf8_get_char(p);
+ p[g_unichar_to_utf8(c, NULL)] = 0;
+ q = utf8_to_locale(p);
+ g_free(p);
+
+ start += strlen(q);
+ g_free(q);
+ }
+
+ g_free(dup);
+
+ return start;
+#else
+ (void)data;
+
+ return right >= width ? right + 1 - width : 0;
+#endif
+}
+
+/** returns the size (in bytes) of the next character */
+static inline size_t
+next_char_size(const gchar *data)
+{
+#if defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)
+ char *p = locale_to_utf8(data), *q;
+
+ gunichar c = g_utf8_get_char(p);
+ p[g_unichar_to_utf8(c, NULL)] = 0;
+ q = utf8_to_locale(p);
+ g_free(p);
+
+ size_t size = strlen(q);
+ g_free(q);
+
+ return size;
+#else
+ (void)data;
+
+ return 1;
+#endif
+}
+
+/** returns the size (in bytes) of the previous character */
+static inline size_t
+prev_char_size(const gchar *data, size_t x)
+{
+#if defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)
+ assert(x > 0);
+
+ char *p = locale_to_utf8(data);
+
+ char *q = p;
+ while (true) {
+ gunichar c = g_utf8_get_char(q);
+ size_t size = g_unichar_to_utf8(c, NULL);
+ if (size > x)
+ size = x;
+ x -= size;
+ if (x == 0) {
+ g_free(p);
+ return size;
+ }
+
+ q += size;
+ }
+#else
+ (void)data;
+ (void)x;
+
+ return 1;
+#endif
+}
+
+/* move the cursor one step to the right */
+static inline void cursor_move_right(struct wreadln *wr)
+{
+ if (wr->line[wr->cursor] == 0)
+ return;
+
+ size_t size = next_char_size(wr->line + wr->cursor);
+ wr->cursor += size;
+ if (cursor_column(wr) >= wr->width)
+ wr->start = right_align_bytes(wr->line, wr->cursor, wr->width);
}
/* move the cursor one step to the left */
-static inline void cursor_move_left(gint *cursor,
- gint *start)
+static inline void cursor_move_left(struct wreadln *wr)
{
- if( *cursor > 0 )
- {
- if( *cursor==*start && *start > 0 )
- (*start)--;
- (*cursor)--;
- }
+ if (wr->cursor == 0)
+ return;
+
+ size_t size = prev_char_size(wr->line, wr->cursor);
+ assert(wr->cursor >= size);
+ wr->cursor -= size;
+ if (wr->cursor < wr->start)
+ wr->start = wr->cursor;
}
/* move the cursor to the end of the line */
-static inline void cursor_move_to_eol(gint *cursor,
- gint *start,
- gint width,
- gint x0,
- gint x1,
- gchar *line)
+static inline void cursor_move_to_eol(struct wreadln *wr)
{
- *cursor = strlen(line);
- if( *cursor+x0 >= x1 )
- *start = *cursor-width+1;
+ wr->cursor = strlen(wr->line);
+ if (cursor_column(wr) >= wr->width)
+ wr->start = right_align_bytes(wr->line, wr->cursor, wr->width);
}
/* draw line buffer and update cursor position */
-static inline void drawline(gint cursor,
- gint start,
- gint width,
- gint x0,
- gint y,
- gboolean masked,
- gchar *line,
- WINDOW *w)
+static inline void drawline(const struct wreadln *wr)
{
- wmove(w, y, x0);
- /* clear input area */
- whline(w, ' ', width);
- /* print visible part of the line buffer */
- if(masked == TRUE) whline(w, '*', my_strlen(line)-start);
- else waddnstr(w, line+start, width);
- /* move the cursor to the correct position */
- wmove(w, y, x0 + cursor-start);
- /* tell ncurses to redraw the screen */
- doupdate();
+ wmove(wr->w, wr->y, wr->x);
+ /* clear input area */
+ whline(wr->w, ' ', wr->width);
+ /* print visible part of the line buffer */
+ if (wr->masked)
+ whline(wr->w, '*', utf8_width(wr->line + wr->start));
+ else
+ waddnstr(wr->w, wr->line + wr->start,
+ screen_to_bytes(wr->line, wr->width));
+ /* move the cursor to the correct position */
+ wmove(wr->w, wr->y, wr->x + cursor_column(wr));
+ /* tell ncurses to redraw the screen */
+ doupdate();
}
+#if (defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)) && !defined(WIN32)
+static bool
+multibyte_is_complete(const char *p, size_t length)
+{
+ GError *error = NULL;
+ gchar *q = g_locale_to_utf8(p, length,
+ NULL, NULL, &error);
+ if (q != NULL) {
+ g_free(q);
+ return true;
+ } else {
+ g_error_free(error);
+ return false;
+ }
+}
+#endif
+
+static void
+wreadln_insert_byte(struct wreadln *wr, gint key)
+{
+ size_t rest = strlen(wr->line + wr->cursor) + 1;
+#if (defined(HAVE_CURSES_ENHANCED) || defined(ENABLE_MULTIBYTE)) && !defined (WIN32)
+ char buffer[32] = { key };
+ size_t length = 1;
+ struct pollfd pfd = {
+ .fd = 0,
+ .events = POLLIN,
+ };
+
+ /* wide version: try to complete the multibyte sequence */
+
+ while (length < sizeof(buffer)) {
+ if (multibyte_is_complete(buffer, length))
+ /* sequence is complete */
+ break;
+
+ /* poll for more bytes on stdin, without timeout */
+
+ if (poll(&pfd, 1, 0) <= 0)
+ /* no more input from keyboard */
+ break;
+
+ buffer[length++] = wgetch(wr->w);
+ }
+
+ memmove(wr->line + wr->cursor + length,
+ wr->line + wr->cursor, rest);
+ memcpy(wr->line + wr->cursor, buffer, length);
+
+#else
+ const size_t length = 1;
+
+ memmove(wr->line + wr->cursor + length,
+ wr->line + wr->cursor, rest);
+ wr->line[wr->cursor] = key;
+
+#endif
+
+ wr->cursor += length;
+ if (cursor_column(wr) >= wr->width)
+ wr->start = right_align_bytes(wr->line, wr->cursor, wr->width);
+}
+
+static void
+wreadln_delete_char(struct wreadln *wr, size_t x)
+{
+ assert(x < strlen(wr->line));
+
+ size_t length = next_char_size(&wr->line[x]);
+ size_t rest = strlen(&wr->line[x + length]) + 1;
+ memmove(&wr->line[x], &wr->line[x + length], rest);
+}
/* libcurses version */
_wreadln(WINDOW *w,
const gchar *prompt,
const gchar *initial_value,
- gint x1,
+ unsigned x1,
GList **history,
GCompletion *gcmp,
gboolean masked)
{
+ struct wreadln wr = {
+ .w = w,
+ .masked = masked,
+ .cursor = 0,
+ .start = 0,
+ };
GList *hlist = NULL, *hcurrent = NULL;
- gchar *line;
- gint x0, y, width;
- gint cursor = 0, start = 0;
- gint key = 0, i;
- /* allocate a line buffer */
- line = g_malloc0(wrln_max_line_size);
+#ifdef NCMPC_MINI
+ (void)gcmp;
+#endif
+
/* turn off echo */
noecho();
- /* make shure the cursor is visible */
+ /* make sure the cursor is visible */
curs_set(1);
/* print prompt string */
- if( prompt )
+ if (prompt) {
waddstr(w, prompt);
- /* retrive y and x0 position */
- getyx(w, y, x0);
+ waddstr(w, ": ");
+ }
+ /* retrieve y and x0 position */
+ getyx(w, wr.y, wr.x);
/* check the x1 value */
- if( x1<=x0 || x1>COLS )
+ if (x1 <= wr.x || x1 > (unsigned)COLS)
x1 = COLS;
- width = x1-x0;
+ wr.width = x1 - wr.x;
/* clear input area */
- mvwhline(w, y, x0, ' ', width);
+ mvwhline(w, wr.y, wr.x, ' ', wr.width);
- if( history ) {
+ if (history) {
/* append the a new line to our history list */
- *history = g_list_append(*history, g_malloc0(wrln_max_line_size));
+ *history = g_list_append(*history, g_malloc0(sizeof(wr.line)));
/* hlist points to the current item in the history list */
- hlist = g_list_last(*history);
+ hlist = g_list_last(*history);
hcurrent = hlist;
}
- if( initial_value == (char *) -1 ) {
+ 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;
- g_strlcpy(line, hlist->data, wrln_max_line_size);
- }
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
- drawline(cursor, start, width, x0, y, masked, line, w);
- } else if( initial_value ) {
+ if (history && hlist->prev) {
+ if (hlist == hcurrent)
+ /* save the current line */
+ g_strlcpy(hlist->data, wr.line, sizeof(wr.line));
+
+ /* get previous line */
+ hlist = hlist->prev;
+ g_strlcpy(wr.line, hlist->data, sizeof(wr.line));
+ }
+ cursor_move_to_eol(&wr);
+ drawline(&wr);
+ } else if (initial_value) {
/* copy the initial value to the line buffer */
- g_strlcpy(line, initial_value, wrln_max_line_size);
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
- drawline(cursor, start, width, x0, y, masked, line, w);
+ g_strlcpy(wr.line, initial_value, sizeof(wr.line));
+ cursor_move_to_eol(&wr);
+ drawline(&wr);
}
- while( key!=13 && key!='\n' ) {
- if( wrln_wgetch )
- key = wrln_wgetch(w);
- else
- key = wgetch(w);
+ gint key = 0;
+ while (key != 13 && key != '\n') {
+ key = wgetch(w);
/* check if key is a function key */
- for(i=0; i<63; i++)
- if( key==KEY_F(i) ) {
- key=KEY_F(1);
- i=64;
+ for (size_t i = 0; i < 63; i++)
+ if (key == (int)KEY_F(i)) {
+ key = KEY_F(1);
+ i = 64;
}
switch (key) {
+ size_t i;
+
#ifdef HAVE_GETMOUSE
case KEY_MOUSE: /* ignore mouse events */
#endif
- case ERR: /* ingnore errors */
- break;
-
- case KEY_RESIZE:
- /* a resize event */
- if( x1>COLS ) {
- x1=COLS;
- width = x1-x0;
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
- }
- /* make shure the cursor is visible */
- curs_set(1);
+ case ERR: /* ignore errors */
break;
case TAB:
- if( gcmp ) {
+#ifndef NCMPC_MINI
+ if (gcmp) {
char *prefix = NULL;
GList *list;
- if(wrln_pre_completion_callback)
- wrln_pre_completion_callback(gcmp, line,
+ if (wrln_pre_completion_callback)
+ wrln_pre_completion_callback(gcmp, wr.line,
wrln_completion_callback_data);
- list = g_completion_complete(gcmp, line, &prefix);
- if( prefix ) {
- g_strlcpy(line, prefix, wrln_max_line_size);
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
+ list = g_completion_complete(gcmp, wr.line, &prefix);
+ if (prefix) {
+ g_strlcpy(wr.line, prefix, sizeof(wr.line));
+ cursor_move_to_eol(&wr);
g_free(prefix);
- }
- else
+ } else
screen_bell();
- if( wrln_post_completion_callback )
- wrln_post_completion_callback(gcmp, line, list,
+
+ if (wrln_post_completion_callback)
+ wrln_post_completion_callback(gcmp, wr.line, list,
wrln_completion_callback_data);
}
+#endif
break;
case KEY_CTRL_G:
screen_bell();
- g_free(line);
- if( history ) {
+ if (history) {
g_free(hcurrent->data);
hcurrent->data = NULL;
*history = g_list_delete_link(*history, hcurrent);
case KEY_LEFT:
case KEY_CTRL_B:
- cursor_move_left(&cursor, &start);
+ cursor_move_left(&wr);
break;
case KEY_RIGHT:
case KEY_CTRL_F:
- cursor_move_right(&cursor, &start, width, x0, x1, line);
+ cursor_move_right(&wr);
break;
case KEY_HOME:
case KEY_CTRL_A:
- cursor = 0;
- start = 0;
+ wr.cursor = 0;
+ wr.start = 0;
break;
case KEY_END:
case KEY_CTRL_E:
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
+ cursor_move_to_eol(&wr);
break;
case KEY_CTRL_K:
- line[cursor] = 0;
+ wr.line[wr.cursor] = 0;
break;
case KEY_CTRL_U:
- cursor = my_strlen(line);
- for (i = 0;i < cursor; i++)
- line[i] = '\0';
- cursor = 0;
+ wr.cursor = utf8_width(wr.line);
+ for (i = 0; i < wr.cursor; i++)
+ wr.line[i] = '\0';
+ wr.cursor = 0;
+ break;
+ case KEY_CTRL_W:
+ /* Firstly remove trailing spaces. */
+ for (i = wr.cursor; i > 0 && wr.line[i-1] == ' '; i--)
+ {
+ cursor_move_left(&wr);
+ wreadln_delete_char(&wr, wr.cursor);
+ }
+ /* Then remove word until next space. */
+ for (; i > 0 && wr.line[i-1] != ' '; i--)
+ {
+ cursor_move_left(&wr);
+ wreadln_delete_char(&wr, wr.cursor);
+ }
break;
case 127:
case KEY_BCKSPC: /* handle backspace: copy all */
case KEY_BACKSPACE: /* chars starting from curpos */
- if( cursor > 0 ) {/* - 1 from buf[n+1] to buf */
- for (i = cursor - 1; line[i] != 0; i++)
- line[i] = line[i + 1];
- cursor_move_left(&cursor, &start);
+ if (wr.cursor > 0) { /* - 1 from buf[n+1] to buf */
+ cursor_move_left(&wr);
+ wreadln_delete_char(&wr, wr.cursor);
}
break;
case KEY_DC: /* handle delete key. As above */
case KEY_CTRL_D:
- if (cursor <= (gint)my_strlen(line) - 1) {
- for (i = cursor; line[i] != 0; i++)
- line[i] = line[i + 1];
- }
+ if (wr.line[wr.cursor] != 0)
+ wreadln_delete_char(&wr, wr.cursor);
break;
case KEY_UP:
case KEY_CTRL_P:
/* get previous history entry */
- if( history && hlist->prev ) {
- if( hlist==hcurrent )
- {
- /* save the current line */
- g_strlcpy(hlist->data, line, wrln_max_line_size);
- }
+ if (history && hlist->prev) {
+ if (hlist == hcurrent)
+ /* save the current line */
+ g_strlcpy(hlist->data, wr.line,
+ sizeof(wr.line));
+
/* get previous line */
hlist = hlist->prev;
- g_strlcpy(line, hlist->data, wrln_max_line_size);
+ g_strlcpy(wr.line, hlist->data,
+ sizeof(wr.line));
}
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
+ cursor_move_to_eol(&wr);
break;
case KEY_DOWN:
case KEY_CTRL_N:
/* get next history entry */
- if( history && hlist->next ) {
+ if (history && hlist->next) {
/* get next line */
hlist = hlist->next;
- g_strlcpy(line, hlist->data, wrln_max_line_size);
+ g_strlcpy(wr.line, hlist->data,
+ sizeof(wr.line));
}
- cursor_move_to_eol(&cursor, &start, width, x0, x1, line);
+ cursor_move_to_eol(&wr);
break;
case '\n':
/* ignore char */
break;
default:
- if (key >= 32) {
- if (strlen (line + cursor)) { /* if the cursor is */
- /* not at the last pos */
- gchar *tmp = 0;
- gsize size = strlen(line + cursor) + 1;
-
- tmp = g_malloc0(size);
- g_strlcpy (tmp, line + cursor, size);
- line[cursor] = key;
- line[cursor + 1] = 0;
- g_strlcat (&line[cursor + 1], tmp, size);
- g_free(tmp);
- cursor_move_right(&cursor, &start, width, x0, x1, line);
- } else {
- line[cursor + 1] = 0;
- line[cursor] = key;
- cursor_move_right(&cursor, &start, width, x0, x1, line);
- }
- }
+ if (key >= 32)
+ wreadln_insert_byte(&wr, key);
}
- drawline(cursor, start, width, x0, y, masked, line, w);
+ drawline(&wr);
}
/* update history */
- if( history ) {
- if( strlen(line) ) {
+ if (history) {
+ if (strlen(wr.line)) {
/* update the current history entry */
- size_t size = strlen(line)+1;
+ size_t size = strlen(wr.line) + 1;
hcurrent->data = g_realloc(hcurrent->data, size);
- g_strlcpy(hcurrent->data, line, size);
+ g_strlcpy(hcurrent->data, wr.line, size);
} else {
/* the line was empty - remove the current history entry */
g_free(hcurrent->data);
*history = g_list_delete_link(*history, hcurrent);
}
- while( g_list_length(*history) > wrln_max_history_length ) {
+ unsigned history_length = g_list_length(*history);
+ while (history_length > 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);
+ --history_length;
}
}
- return g_realloc(line, strlen(line)+1);
-}
-
-#else
-
-/* move the cursor one step to the right */
-static inline void cursor_move_right(gint *cursor,
- gint *start,
- gint width,
- gint x0,
- gint x1,
- wchar_t *wline)
-{
- if( *cursor < wcslen(wline) && *cursor<wrln_max_line_size-1 )
- {
- (*cursor)++;
- if( *cursor+x0 >= x1 && *start<*cursor-width+1)
- (*start)++;
- }
-}
-
-/* move the cursor one step to the left */
-static inline void cursor_move_left(gint *cursor,
- gint *start,
- gint width,
- gint x0,
- gint x1,
- wchar_t *line)
-{
- if( *cursor > 0 )
- {
- if( *cursor==*start && *start > 0 )
- (*start)--;
- (*cursor)--;
- }
-}
-
-
-static inline void backspace(gint *cursor,
- gint *start,
- gint width,
- gint x0,
- gint x1,
- wchar_t *wline)
-{
- int i;
- if( *cursor > 0 )
- {
- for (i = *cursor - 1; wline[i] != 0; i++)
- wline[i] = wline[i + 1];
- cursor_move_left(cursor, start, width, x0, x1, wline);
- }
-}
-
-/* handle delete */
-static inline void delete(gint *cursor,
- wchar_t *wline)
-{
- int i;
- if( *cursor <= wcslen(wline) - 1 )
- {
- for (i = *cursor; wline[i] != 0; i++)
- wline[i] = wline[i + 1];
- }
-}
-
-/* move the cursor to the end of the line */
-static inline void cursor_move_to_eol(gint *cursor,
- gint *start,
- gint width,
- gint x0,
- gint x1,
- wchar_t *line)
-{
- *cursor = wcslen(line);
- if( *cursor+x0 >= x1 )
- *start = *cursor-width+1;
-}
-
-/* draw line buffer and update cursor position */
-static inline void drawline(gint cursor,
- gint start,
- gint width,
- gint x0,
- gint y,
- gboolean masked,
- wchar_t *line,
- WINDOW *w)
-{
- wmove(w, y, x0);
- /* clear input area */
- whline(w, ' ', width);
- /* print visible part of the line buffer */
- if(masked == TRUE) whline(w, '*', wcslen(line)-start);
- else waddnwstr(w, line+start, width);
- FILE *dbg = fopen ("dbg", "a+");
- fprintf (dbg, "%i,%s---%i---", width, line, wcslen (line));
- /* move the cursor to the correct position */
- wmove(w, y, x0 + cursor-start);
- /* tell ncurses to redraw the screen */
- doupdate();
-}
-
-/* libcursesw version */
-
-static gchar *
-_wreadln(WINDOW *w,
- const gchar *prompt,
- const gchar *initial_value,
- gint x1,
- GList **history,
- GCompletion *gcmp,
- gboolean masked)
-{
- 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;
-
- /* 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(&cursor, &start, width, x0, x1, wline);
- drawline(cursor, start, width, x0, y, masked, wline, w);
- }
- else if( initial_value )
- {
- /* copy the initial value to the line buffer */
- mbstowcs(wline, initial_value, wrln_max_line_size);
- cursor_move_to_eol(&cursor, &start, width, x0, x1, wline);
- drawline(cursor, start, width, x0, y, masked, wline, w);
- }
-
- 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:
- x=0;
- cursor=0;
- start=0;
- break;
- case KEY_END:
- cursor_move_to_eol(&cursor, &start, width, x0, x1, wline);
- break;
- case KEY_LEFT:
- cursor_move_left(&cursor, &start, width, x0, x1, wline);
- break;
- case KEY_RIGHT:
- cursor_move_right(&cursor, &start, width, x0, x1, wline);
- break;
- case KEY_DC:
- delete(&cursor, wline);
- break;
- case KEY_BCKSPC:
- case KEY_BACKSPACE:
- backspace(&cursor, &start, width, x0, x1, wline);
- 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(&cursor, &start, width, x0, x1, wline);
- 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(&cursor, &start, width, x0, x1, wline);
- break;
- case KEY_RESIZE:
- /* resize event */
- if( x1>COLS )
- {
- x1=COLS;
- width = x1-x0;
- cursor_move_to_eol(&cursor, &start, width, x0, x1, wline);
- }
- /* make shure the cursor is visible */
- curs_set(1);
- break;
- }
-
- }
- else if( key!=ERR )
- {
- switch(wch)
- {
- case KEY_CTRL_A:
- x=0;
- cursor=0;
- start=0;
- break;
- case KEY_CTRL_C:
- exit(EXIT_SUCCESS);
- break;
- case KEY_CTRL_D:
- delete(&cursor, wline);
- break;
- case KEY_CTRL_E:
- cursor_move_to_eol(&cursor, &start, width, x0, x1, wline);
- break;
- case TAB:
- if( gcmp )
- {
- char *prefix = NULL;
- GList *list;
-
- i = wcstombs(NULL,wline,0)+1;
- mbline = g_malloc0(i);
- wcstombs(mbline, wline, i);
-
- if(wrln_pre_completion_callback)
- wrln_pre_completion_callback(gcmp, mbline,
- wrln_completion_callback_data);
- list = g_completion_complete(gcmp, mbline, &prefix);
- if( prefix )
- {
- mbstowcs(wline, prefix, wrln_max_line_size);
- cursor_move_to_eol(&cursor, &start, width, x0, x1, wline);
- g_free(prefix);
- }
- else
- screen_bell();
- if( wrln_post_completion_callback )
- wrln_post_completion_callback(gcmp, mbline, list,
- wrln_completion_callback_data);
-
- g_free(mbline);
- }
- 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 KEY_CTRL_U:
- cursor = wcslen(wline);
- for (i = 0;i < cursor; i++)
- wline[i] = '\0';
- cursor = 0;
- break;
- case KEY_CTRL_Z:
- sigstop();
- break;
- case 127:
- backspace(&cursor, &start, width, x0, x1, wline);
- 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(&cursor, &start, width, x0, x1, wline);
- }
- else
- {
- FILE *ff = fopen ("curspr", "a+");
- fprintf (ff, "%i", cursor);
- wline[cursor] = wch;
- wline[cursor+1] = 0;
- cursor_move_right(&cursor, &start, width, x0, x1, wline);
- }
- }
- }
- drawline(cursor, start, width, x0, y, masked, wline, w);
- }
- 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);
+ if (wr.line[0] == 0)
+ return NULL;
- /* remove the oldest history entry */
- g_free(first->data);
- first->data = NULL;
- *history = g_list_delete_link(*history, first);
- }
- }
- return mbline;
+ return g_strdup(wr.line);
}
-
-#endif
gchar *
wreadln(WINDOW *w,
const gchar *prompt,
const gchar *initial_value,
- gint x1,
+ unsigned x1,
GList **history,
GCompletion *gcmp)
{
wreadln_masked(WINDOW *w,
const gchar *prompt,
const gchar *initial_value,
- gint x1,
+ unsigned x1,
GList **history,
GCompletion *gcmp)
{