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freebsd-skq/contrib/dialog/fselect.c
Nathan Whitehorn 682c9e0fed Update dialog to 1.1-20110707.
2011-07-14 14:01:36 +00:00

885 lines
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/*
* $Id: fselect.c,v 1.78 2011/06/29 09:48:21 tom Exp $
*
* fselect.c -- implements the file-selector box
*
* Copyright 2000-2010,2011 Thomas E. Dickey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License, version 2.1
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to
* Free Software Foundation, Inc.
* 51 Franklin St., Fifth Floor
* Boston, MA 02110, USA.
*/
#include <dialog.h>
#include <dlg_keys.h>
#include <sys/types.h>
#include <sys/stat.h>
#if HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
# if defined(_FILE_OFFSET_BITS) && defined(HAVE_STRUCT_DIRENT64)
# if !defined(_LP64) && (_FILE_OFFSET_BITS == 64)
# define DIRENT struct dirent64
# else
# define DIRENT struct dirent
# endif
# else
# define DIRENT struct dirent
# endif
#define EXT_WIDE 1
#define HDR_HIGH 1
#define BTN_HIGH (1 + 2 * MARGIN) /* Ok/Cancel, also input-box */
#define MIN_HIGH (HDR_HIGH - MARGIN + (BTN_HIGH * 2) + 4 * MARGIN)
#define MIN_WIDE (2 * MAX(dlg_count_columns(d_label), dlg_count_columns(f_label)) + 6 * MARGIN + 2 * EXT_WIDE)
#define MOUSE_D (KEY_MAX + 0)
#define MOUSE_F (KEY_MAX + 10000)
#define MOUSE_T (KEY_MAX + 20000)
typedef enum {
sDIRS = -3
,sFILES = -2
,sTEXT = -1
} STATES;
typedef struct {
WINDOW *par; /* parent window */
WINDOW *win; /* this window */
int length; /* length of the data[] array */
int offset; /* index of first item on screen */
int choice; /* index of the selection */
int mousex; /* base of mouse-code return-values */
unsigned allocd;
char **data;
} LIST;
typedef struct {
int length;
char **data;
} MATCH;
static void
init_list(LIST * list, WINDOW *par, WINDOW *win, int mousex)
{
list->par = par;
list->win = win;
list->length = 0;
list->offset = 0;
list->choice = 0;
list->mousex = mousex;
list->allocd = 0;
list->data = 0;
dlg_mouse_mkbigregion(getbegy(win), getbegx(win),
getmaxy(win), getmaxx(win),
mousex, 1, 1, 1 /* by lines */ );
}
static char *
leaf_of(char *path)
{
char *leaf = strrchr(path, '/');
if (leaf != 0)
leaf++;
else
leaf = path;
return leaf;
}
static char *
data_of(LIST * list)
{
if (list != 0
&& list->data != 0)
return list->data[list->choice];
return 0;
}
static void
free_list(LIST * list, int reinit)
{
int n;
if (list->data != 0) {
for (n = 0; list->data[n] != 0; n++)
free(list->data[n]);
free(list->data);
list->data = 0;
}
if (reinit)
init_list(list, list->par, list->win, list->mousex);
}
static void
add_to_list(LIST * list, char *text)
{
unsigned need;
need = (unsigned) (list->length + 1);
if (need + 1 > list->allocd) {
list->allocd = 2 * (need + 1);
if (list->data == 0) {
list->data = dlg_malloc(char *, list->allocd);
} else {
list->data = dlg_realloc(char *, list->allocd, list->data);
}
assert_ptr(list->data, "add_to_list");
}
list->data[list->length++] = dlg_strclone(text);
list->data[list->length] = 0;
}
static void
keep_visible(LIST * list)
{
int high = getmaxy(list->win);
if (list->choice < list->offset) {
list->offset = list->choice;
}
if (list->choice - list->offset >= high)
list->offset = list->choice - high + 1;
}
#define Value(c) (int)((c) & 0xff)
static int
find_choice(char *target, LIST * list)
{
int n;
int choice = list->choice;
int len_1, len_2, cmp_1, cmp_2;
if (*target == 0) {
list->choice = 0;
} else {
/* find the match with the longest length. If more than one has the
* same length, choose the one with the closest match of the final
* character.
*/
len_1 = 0;
cmp_1 = 256;
for (n = 0; n < list->length; n++) {
char *a = target;
char *b = list->data[n];
len_2 = 0;
while ((*a != 0) && (*b != 0) && (*a == *b)) {
a++;
b++;
len_2++;
}
cmp_2 = Value(*a) - Value(*b);
if (cmp_2 < 0)
cmp_2 = -cmp_2;
if ((len_2 > len_1)
|| (len_1 == len_2 && cmp_2 < cmp_1)) {
len_1 = len_2;
cmp_1 = cmp_2;
list->choice = n;
}
}
}
if (choice != list->choice) {
keep_visible(list);
}
return (choice != list->choice);
}
static void
display_list(LIST * list)
{
int n;
int x;
int y;
int top;
int bottom;
if (list->win != 0) {
dlg_attr_clear(list->win, getmaxy(list->win), getmaxx(list->win), item_attr);
for (n = list->offset; n < list->length && list->data[n]; n++) {
y = n - list->offset;
if (y >= getmaxy(list->win))
break;
(void) wmove(list->win, y, 0);
if (n == list->choice)
wattrset(list->win, item_selected_attr);
(void) waddstr(list->win, list->data[n]);
wattrset(list->win, item_attr);
}
wattrset(list->win, item_attr);
getparyx(list->win, y, x);
top = y - 1;
bottom = y + getmaxy(list->win);
dlg_draw_scrollbar(list->par,
(long) list->offset,
(long) list->offset,
(long) (list->offset + getmaxy(list->win)),
(long) (list->length),
x + 1,
x + getmaxx(list->win),
top,
bottom,
menubox_attr,
menubox_border_attr);
(void) wmove(list->win, list->choice - list->offset, 0);
(void) wnoutrefresh(list->win);
}
}
/* FIXME: see arrows.c
* This workaround is used to allow two lists to have scroll-tabs at the same
* time, by reassigning their return-values to be different. Just for
* readability, we use the names of keys with similar connotations, though all
* that is really required is that they're distinct, so we can put them in a
* switch statement.
*/
static void
fix_arrows(LIST * list)
{
int x;
int y;
int top;
int bottom;
if (list->win != 0) {
getparyx(list->win, y, x);
top = y - 1;
bottom = y + getmaxy(list->win);
mouse_mkbutton(top, x, 6,
((list->mousex == MOUSE_D)
? KEY_PREVIOUS
: KEY_PPAGE));
mouse_mkbutton(bottom, x, 6,
((list->mousex == MOUSE_D)
? KEY_NEXT
: KEY_NPAGE));
}
}
static int
show_list(char *target, LIST * list, int keep)
{
int changed = keep || find_choice(target, list);
display_list(list);
return changed;
}
/*
* Highlight the closest match to 'target' in the given list, setting offset
* to match.
*/
static int
show_both_lists(char *input, LIST * d_list, LIST * f_list, int keep)
{
char *leaf = leaf_of(input);
return show_list(leaf, d_list, keep) | show_list(leaf, f_list, keep);
}
/*
* Move up/down in the given list
*/
static bool
change_list(int choice, LIST * list)
{
if (data_of(list) != 0) {
int last = list->length - 1;
choice += list->choice;
if (choice < 0)
choice = 0;
if (choice > last)
choice = last;
list->choice = choice;
keep_visible(list);
display_list(list);
return TRUE;
}
return FALSE;
}
static void
scroll_list(int direction, LIST * list)
{
if (data_of(list) != 0) {
int length = getmaxy(list->win);
if (change_list(direction * length, list))
return;
}
beep();
}
static int
compar(const void *a, const void *b)
{
return strcmp(*(const char *const *) a, *(const char *const *) b);
}
static void
match(char *name, LIST * d_list, LIST * f_list, MATCH * match_list)
{
char *test = leaf_of(name);
size_t test_len = strlen(test);
char **matches = dlg_malloc(char *, (size_t) (d_list->length + f_list->length));
size_t data_len = 0;
int i;
for (i = 2; i < d_list->length; i++) {
if (strncmp(test, d_list->data[i], test_len) == 0) {
matches[data_len++] = d_list->data[i];
}
}
for (i = 0; i < f_list->length; i++) {
if (strncmp(test, f_list->data[i], test_len) == 0) {
matches[data_len++] = f_list->data[i];
}
}
matches = dlg_realloc(char *, data_len, matches);
match_list->data = matches;
match_list->length = (int) data_len;
}
static void
free_match(MATCH * match_list)
{
free(match_list->data);
match_list->length = 0;
}
static int
complete(char *name, LIST * d_list, LIST * f_list, char **buff_ptr)
{
MATCH match_list;
char *test;
size_t test_len;
size_t i;
int j;
char *buff;
match(name, d_list, f_list, &match_list);
if (match_list.length == 0) {
*buff_ptr = NULL;
return 0;
}
test = match_list.data[0];
test_len = strlen(test);
buff = dlg_malloc(char, test_len + 2);
if (match_list.length == 1) {
strcpy(buff, test);
i = test_len;
if (test == data_of(d_list)) {
buff[test_len] = '/';
i++;
}
} else {
for (i = 0; i < test_len; i++) {
char test_char = test[i];
if (test_char == '\0')
break;
for (j = 0; j < match_list.length; j++) {
if (match_list.data[j][i] != test_char) {
break;
}
}
if (j == match_list.length) {
(buff)[i] = test_char;
} else
break;
}
buff = dlg_realloc(char, i + 1, buff);
}
free_match(&match_list);
buff[i] = '\0';
*buff_ptr = buff;
return (i != 0);
}
static bool
fill_lists(char *current, char *input, LIST * d_list, LIST * f_list, int keep)
{
DIR *dp;
DIRENT *de;
struct stat sb;
int n;
char path[MAX_LEN + 1];
char *leaf;
/* check if we've updated the lists */
for (n = 0; current[n] && input[n]; n++) {
if (current[n] != input[n])
break;
}
if (current[n] == input[n])
return FALSE;
if (strchr(current + n, '/') == 0
&& strchr(input + n, '/') == 0) {
return show_both_lists(input, d_list, f_list, keep);
}
strcpy(current, input);
/* refill the lists */
free_list(d_list, TRUE);
free_list(f_list, TRUE);
strcpy(path, current);
if ((leaf = strrchr(path, '/')) != 0) {
*++leaf = 0;
} else {
strcpy(path, "./");
leaf = path + strlen(path);
}
if ((dp = opendir(path)) != 0) {
while ((de = readdir(dp)) != 0) {
strncpy(leaf, de->d_name, NAMLEN(de))[NAMLEN(de)] = 0;
if (stat(path, &sb) == 0) {
if ((sb.st_mode & S_IFMT) == S_IFDIR)
add_to_list(d_list, leaf);
else if (f_list->win)
add_to_list(f_list, leaf);
}
}
(void) closedir(dp);
/* sort the lists */
qsort(d_list->data,
(size_t) d_list->length,
sizeof(d_list->data[0]),
compar);
qsort(f_list->data,
(size_t) f_list->length,
sizeof(f_list->data[0]),
compar);
}
(void) show_both_lists(input, d_list, f_list, FALSE);
d_list->offset = d_list->choice;
f_list->offset = f_list->choice;
return TRUE;
}
static bool
usable_state(int state, LIST * dirs, LIST * files)
{
bool result;
switch (state) {
case sDIRS:
result = (dirs->win != 0) && (data_of(dirs) != 0);
break;
case sFILES:
result = (files->win != 0) && (data_of(files) != 0);
break;
default:
result = TRUE;
break;
}
return result;
}
#define which_list() ((state == sFILES) \
? &f_list \
: ((state == sDIRS) \
? &d_list \
: 0))
#define NAVIGATE_BINDINGS \
DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \
DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \
DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \
DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN ), \
DLG_KEYS_DATA( DLGK_ITEM_NEXT, CHR_NEXT ), \
DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_NEXT ), \
DLG_KEYS_DATA( DLGK_ITEM_PREV, CHR_PREVIOUS ), \
DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ), \
DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ), \
DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE )
/*
* Display a dialog box for entering a filename
*/
static int
dlg_fselect(const char *title, const char *path, int height, int width, int dselect)
{
/* *INDENT-OFF* */
static DLG_KEYS_BINDING binding[] = {
HELPKEY_BINDINGS,
ENTERKEY_BINDINGS,
NAVIGATE_BINDINGS,
END_KEYS_BINDING
};
static DLG_KEYS_BINDING binding2[] = {
INPUTSTR_BINDINGS,
HELPKEY_BINDINGS,
ENTERKEY_BINDINGS,
NAVIGATE_BINDINGS,
END_KEYS_BINDING
};
/* *INDENT-ON* */
#ifdef KEY_RESIZE
int old_height = height;
int old_width = width;
bool resized = FALSE;
#endif
int tbox_y, tbox_x, tbox_width, tbox_height;
int dbox_y, dbox_x, dbox_width, dbox_height;
int fbox_y, fbox_x, fbox_width, fbox_height;
int show_buttons = TRUE;
int offset = 0;
int key = 0;
int fkey = FALSE;
int code;
int result = DLG_EXIT_UNKNOWN;
int state = dialog_vars.defaultno ? dlg_defaultno_button() : sTEXT;
int button = state;
int first = (state == sTEXT);
char *input;
char *completed;
char current[MAX_LEN + 1];
WINDOW *dialog = 0;
WINDOW *w_text = 0;
WINDOW *w_work = 0;
const char **buttons = dlg_ok_labels();
const char *d_label = _("Directories");
const char *f_label = _("Files");
char *partial;
int min_wide = MIN_WIDE;
int min_items = height ? 0 : 4;
LIST d_list, f_list;
dlg_does_output();
/* Set up the initial value */
input = dlg_set_result(path);
offset = (int) strlen(input);
*current = 0;
dlg_button_layout(buttons, &min_wide);
#ifdef KEY_RESIZE
retry:
#endif
dlg_auto_size(title, (char *) 0, &height, &width, 6, 25);
height += MIN_HIGH + min_items;
if (width < min_wide)
width = min_wide;
dlg_print_size(height, width);
dlg_ctl_size(height, width);
dialog = dlg_new_window(height, width,
dlg_box_y_ordinate(height),
dlg_box_x_ordinate(width));
dlg_register_window(dialog, "fselect", binding);
dlg_register_buttons(dialog, "fselect", buttons);
dlg_mouse_setbase(0, 0);
dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
dlg_draw_bottom_box(dialog);
dlg_draw_title(dialog, title);
wattrset(dialog, dialog_attr);
/* Draw the input field box */
tbox_height = 1;
tbox_width = width - (4 * MARGIN + 2);
tbox_y = height - (BTN_HIGH * 2) + MARGIN;
tbox_x = (width - tbox_width) / 2;
w_text = derwin(dialog, tbox_height, tbox_width, tbox_y, tbox_x);
if (w_text == 0)
return DLG_EXIT_ERROR;
(void) keypad(w_text, TRUE);
dlg_draw_box(dialog, tbox_y - MARGIN, tbox_x - MARGIN,
(2 * MARGIN + 1), tbox_width + (MARGIN + EXT_WIDE),
menubox_border_attr, menubox_attr);
dlg_mouse_mkbigregion(getbegy(dialog) + tbox_y - MARGIN,
getbegx(dialog) + tbox_x - MARGIN,
1 + (2 * MARGIN),
tbox_width + (MARGIN + EXT_WIDE),
MOUSE_T, 1, 1, 3 /* doesn't matter */ );
dlg_register_window(w_text, "fselect", binding2);
/* Draw the directory listing box */
if (dselect)
dbox_width = (width - (6 * MARGIN));
else
dbox_width = (width - (6 * MARGIN + 2 * EXT_WIDE)) / 2;
dbox_height = height - MIN_HIGH;
dbox_y = (2 * MARGIN + 1);
dbox_x = tbox_x;
w_work = derwin(dialog, dbox_height, dbox_width, dbox_y, dbox_x);
if (w_work == 0)
return DLG_EXIT_ERROR;
(void) keypad(w_work, TRUE);
(void) mvwprintw(dialog, dbox_y - (MARGIN + 1), dbox_x - MARGIN, d_label);
dlg_draw_box(dialog,
dbox_y - MARGIN, dbox_x - MARGIN,
dbox_height + (MARGIN + 1), dbox_width + (MARGIN + 1),
menubox_border_attr, menubox_attr);
init_list(&d_list, dialog, w_work, MOUSE_D);
if (!dselect) {
/* Draw the filename listing box */
fbox_height = dbox_height;
fbox_width = dbox_width;
fbox_y = dbox_y;
fbox_x = tbox_x + dbox_width + (2 * MARGIN);
w_work = derwin(dialog, fbox_height, fbox_width, fbox_y, fbox_x);
if (w_work == 0)
return DLG_EXIT_ERROR;
(void) keypad(w_work, TRUE);
(void) mvwprintw(dialog, fbox_y - (MARGIN + 1), fbox_x - MARGIN, f_label);
dlg_draw_box(dialog,
fbox_y - MARGIN, fbox_x - MARGIN,
fbox_height + (MARGIN + 1), fbox_width + (MARGIN + 1),
menubox_border_attr, menubox_attr);
init_list(&f_list, dialog, w_work, MOUSE_F);
} else {
memset(&f_list, 0, sizeof(f_list));
}
while (result == DLG_EXIT_UNKNOWN) {
if (fill_lists(current, input, &d_list, &f_list, state < sTEXT))
show_buttons = TRUE;
#ifdef KEY_RESIZE
if (resized) {
resized = FALSE;
dlg_show_string(w_text, input, offset, inputbox_attr,
0, 0, tbox_width, (bool) 0, (bool) first);
}
#endif
/*
* The last field drawn determines where the cursor is shown:
*/
if (show_buttons) {
show_buttons = FALSE;
button = (state < 0) ? 0 : state;
dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
}
if (state < 0) {
switch (state) {
case sTEXT:
dlg_set_focus(dialog, w_text);
break;
case sFILES:
dlg_set_focus(dialog, f_list.win);
break;
case sDIRS:
dlg_set_focus(dialog, d_list.win);
break;
}
}
if (first) {
(void) wrefresh(dialog);
} else {
fix_arrows(&d_list);
fix_arrows(&f_list);
key = dlg_mouse_wgetch((state == sTEXT) ? w_text : dialog, &fkey);
if (dlg_result_key(key, fkey, &result))
break;
}
if (!fkey && key == ' ') {
key = DLGK_SELECT;
fkey = TRUE;
}
if (fkey) {
switch (key) {
case DLGK_MOUSE(KEY_PREVIOUS):
state = sDIRS;
scroll_list(-1, which_list());
continue;
case DLGK_MOUSE(KEY_NEXT):
state = sDIRS;
scroll_list(1, which_list());
continue;
case DLGK_MOUSE(KEY_PPAGE):
state = sFILES;
scroll_list(-1, which_list());
continue;
case DLGK_MOUSE(KEY_NPAGE):
state = sFILES;
scroll_list(1, which_list());
continue;
case DLGK_PAGE_PREV:
scroll_list(-1, which_list());
continue;
case DLGK_PAGE_NEXT:
scroll_list(1, which_list());
continue;
case DLGK_ITEM_PREV:
if (change_list(-1, which_list()))
continue;
/* FALLTHRU */
case DLGK_FIELD_PREV:
show_buttons = TRUE;
do {
state = dlg_prev_ok_buttonindex(state, sDIRS);
} while (!usable_state(state, &d_list, &f_list));
continue;
case DLGK_ITEM_NEXT:
if (change_list(1, which_list()))
continue;
/* FALLTHRU */
case DLGK_FIELD_NEXT:
show_buttons = TRUE;
do {
state = dlg_next_ok_buttonindex(state, sDIRS);
} while (!usable_state(state, &d_list, &f_list));
continue;
case DLGK_SELECT:
completed = 0;
partial = 0;
if (state == sFILES && !dselect) {
completed = data_of(&f_list);
} else if (state == sDIRS) {
completed = data_of(&d_list);
} else {
if (complete(input, &d_list, &f_list, &partial)) {
completed = partial;
}
}
if (completed != 0) {
state = sTEXT;
show_buttons = TRUE;
strcpy(leaf_of(input), completed);
offset = (int) strlen(input);
dlg_show_string(w_text, input, offset, inputbox_attr,
0, 0, tbox_width, 0, first);
if (partial != NULL)
free(partial);
continue;
} else { /* if (state < sTEXT) */
(void) beep();
continue;
}
/* FALLTHRU */
case DLGK_ENTER:
result = (state > 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK;
continue;
#ifdef KEY_RESIZE
case KEY_RESIZE:
/* reset data */
height = old_height;
width = old_width;
show_buttons = TRUE;
*current = 0;
resized = TRUE;
/* repaint */
dlg_clear();
dlg_del_window(dialog);
refresh();
dlg_mouse_free_regions();
goto retry;
#endif
default:
if (key >= DLGK_MOUSE(MOUSE_T)) {
state = sTEXT;
continue;
} else if (key >= DLGK_MOUSE(MOUSE_F)) {
if (f_list.win != 0) {
state = sFILES;
f_list.choice = (key - DLGK_MOUSE(MOUSE_F)) + f_list.offset;
display_list(&f_list);
}
continue;
} else if (key >= DLGK_MOUSE(MOUSE_D)) {
if (d_list.win != 0) {
state = sDIRS;
d_list.choice = (key - DLGK_MOUSE(MOUSE_D)) + d_list.offset;
display_list(&d_list);
}
continue;
} else if (is_DLGK_MOUSE(key)
&& (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
result = code;
continue;
}
break;
}
}
if (state < 0) { /* Input box selected if we're editing */
int edit = dlg_edit_string(input, &offset, key, fkey, first);
if (edit) {
dlg_show_string(w_text, input, offset, inputbox_attr,
0, 0, tbox_width, 0, first);
first = FALSE;
state = sTEXT;
}
} else if (state >= 0 &&
(code = dlg_char_to_button(key, buttons)) >= 0) {
result = dlg_ok_buttoncode(code);
break;
}
}
dlg_unregister_window(w_text);
dlg_del_window(dialog);
dlg_mouse_free_regions();
free_list(&d_list, FALSE);
free_list(&f_list, FALSE);
return result;
}
/*
* Display a dialog box for entering a filename
*/
int
dialog_fselect(const char *title, const char *path, int height, int width)
{
return dlg_fselect(title, path, height, width, FALSE);
}
/*
* Display a dialog box for entering a directory
*/
int
dialog_dselect(const char *title, const char *path, int height, int width)
{
return dlg_fselect(title, path, height, width, TRUE);
}
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