Viewing file:  ins_wide.c (10.18 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* $Id: ins_wide.c,v 1.5 2004/11/21 00:25:05 tom Exp $
*
* Demonstrate the wins_wstr() and wins_wch functions.
* Thomas Dickey - 2002/11/23
*
* Note: to provide inputs for *ins_wch(), we use setcchar(). A quirk of the
* X/Open definition for that function is that the string contains no
* characters with negative width. Any control character (such as tab) falls
* into that category. So it follows that *ins_wch() cannot render a tab
* character because there is no legal way to construct a cchar_t containing
* one. X/Open does not document this, and it would be logical to assume that
* *ins_wstr() has the same limitation, but it uses a wchar_t string directly,
* and does not document how tabs are handled.
*/
#include <test.priv.h>
#if USE_WIDEC_SUPPORT
/* definitions to make it simpler to compare with inserts.c */
#define InsNStr ins_nwstr
#define InsStr ins_wstr
#define MvInsNStr mvins_nwstr
#define MvInsStr mvins_wstr
#define MvWInsNStr mvwins_nwstr
#define MvWInsStr mvwins_wstr
#define WInsNStr wins_nwstr
#define WInsStr wins_wstr
#define TABSIZE 8
typedef enum {
oDefault = 0,
oMove = 1,
oWindow = 2,
oMoveWindow = 3
} Options;
static bool m_opt = FALSE;
static bool w_opt = FALSE;
static int n_opt = -1;
static void
legend(WINDOW *win, int level, Options state, wchar_t *buffer, int length)
{
NCURSES_CONST char *showstate;
switch (state) {
default:
case oDefault:
showstate = "";
break;
case oMove:
showstate = " (mvXXX)";
break;
case oWindow:
showstate = " (winXXX)";
break;
case oMoveWindow:
showstate = " (mvwinXXX)";
break;
}
wmove(win, 0, 0);
wprintw(win,
"The Strings/Chars displays should match. Enter any characters, except:\n");
wprintw(win,
"down-arrow or ^N to repeat on next line, 'w' for inner window, 'q' to exit.\n");
wclrtoeol(win);
wprintw(win, "Level %d,%s inserted %d characters <", level,
showstate, length);
waddwstr(win, buffer);
waddstr(win, ">");
}
static int
ColOf(wchar_t *buffer, int length, int margin)
{
int n;
int result;
for (n = 0, result = margin + 1; n < length; ++n) {
int ch = buffer[n];
switch (ch) {
case '\n':
/* actually newline should clear the remainder of the line
* and move to the next line - but that seems a little awkward
* in this example.
*/
case '\r':
result = 0;
break;
case '\b':
if (result > 0)
--result;
break;
case '\t':
result += (TABSIZE - (result % TABSIZE));
break;
case '\177':
result += 2;
break;
default:
result += wcwidth(ch);
if (ch < 32)
++result;
break;
}
}
return result;
}
static int
ConvertCh(chtype source, cchar_t *target)
{
wchar_t tmp_wchar[2];
tmp_wchar[0] = source;
tmp_wchar[1] = 0;
if (setcchar(target, tmp_wchar, A_NORMAL, 0, (void *) 0) == ERR) {
beep();
return FALSE;
}
return TRUE;
}
static int
MvWInsCh(WINDOW *win, int y, int x, chtype ch)
{
int code;
cchar_t tmp_cchar;
if (ConvertCh(ch, &tmp_cchar)) {
code = mvwins_wch(win, y, x, &tmp_cchar);
} else {
code = mvwinsch(win, y, x, ch);
}
return code;
}
static int
MvInsCh(int y, int x, chtype ch)
{
int code;
cchar_t tmp_cchar;
if (ConvertCh(ch, &tmp_cchar)) {
code = mvins_wch(y, x, &tmp_cchar);
} else {
code = mvinsch(y, x, ch);
}
return code;
}
static int
WInsCh(WINDOW *win, chtype ch)
{
int code;
cchar_t tmp_cchar;
if (ConvertCh(ch, &tmp_cchar)) {
code = wins_wch(win, &tmp_cchar);
} else {
code = winsch(win, ch);
}
return code;
}
static int
InsCh(chtype ch)
{
int code;
cchar_t tmp_cchar;
if (ConvertCh(ch, &tmp_cchar)) {
code = ins_wch(&tmp_cchar);
} else {
code = insch(ch);
}
return code;
}
#define LEN(n) ((length - (n) > n_opt) ? n_opt : (length - (n)))
static void
test_inserts(int level)
{
static bool first = TRUE;
wint_t ch;
int code;
int limit;
int row = 1;
int col;
int row2, col2;
int length;
wchar_t buffer[BUFSIZ];
WINDOW *look = 0;
WINDOW *work = 0;
WINDOW *show = 0;
int margin = (2 * TABSIZE) - 1;
Options option = ((m_opt ? oMove : oDefault)
| ((w_opt || (level > 0)) ? oWindow : oDefault));
if (first) {
static char cmd[80];
setlocale(LC_ALL, "");
putenv(strcpy(cmd, "TABSIZE=8"));
initscr();
(void) cbreak(); /* take input chars one at a time, no wait for \n */
(void) noecho(); /* don't echo input */
keypad(stdscr, TRUE);
}
limit = LINES - 5;
if (level > 0) {
look = newwin(limit, COLS - (2 * (level - 1)), 0, level - 1);
work = newwin(limit - 2, COLS - (2 * level), 1, level);
show = newwin(4, COLS, limit + 1, 0);
box(look, 0, 0);
wnoutrefresh(look);
limit -= 2;
} else {
work = stdscr;
show = derwin(stdscr, 4, COLS, limit + 1, 0);
}
keypad(work, TRUE);
for (col = margin + 1; col < COLS; col += TABSIZE)
mvwvline(work, row, col, '.', limit - 2);
mvwvline(work, row, margin, ACS_VLINE, limit - 2);
mvwvline(work, row, margin + 1, ACS_VLINE, limit - 2);
limit /= 2;
mvwaddstr(work, 1, 2, "String");
mvwaddstr(work, limit + 1, 2, "Chars");
wnoutrefresh(work);
buffer[length = 0] = '\0';
legend(show, level, option, buffer, length);
wnoutrefresh(show);
doupdate();
/*
* Show the characters inserted in color, to distinguish from those that
* are shifted.
*/
if (has_colors()) {
start_color();
init_pair(1, COLOR_WHITE, COLOR_BLUE);
wbkgdset(work, COLOR_PAIR(1) | ' ');
}
while ((code = wget_wch(work, &ch)) != ERR) {
if (code == KEY_CODE_YES) {
switch (ch) {
case KEY_DOWN:
ch = CTRL('N');
break;
case KEY_BACKSPACE:
ch = '\b';
break;
default:
beep();
continue;
}
} else if (code == ERR) {
beep();
break;
}
if (ch == 'q')
break;
wmove(work, row, margin + 1);
switch (ch) {
case 'w':
test_inserts(level + 1);
touchwin(look);
touchwin(work);
touchwin(show);
wnoutrefresh(look);
wnoutrefresh(work);
wnoutrefresh(show);
doupdate();
break;
case CTRL('N'):
if (row < limit) {
++row;
/* put the whole string in, all at once */
col2 = margin + 1;
switch (option) {
case oDefault:
if (n_opt > 1) {
for (col = 0; col < length; col += n_opt) {
col2 = ColOf(buffer, col, margin);
if (move(row, col2) != ERR) {
InsNStr(buffer + col, LEN(col));
}
}
} else {
if (move(row, col2) != ERR) {
InsStr(buffer);
}
}
break;
case oMove:
if (n_opt > 1) {
for (col = 0; col < length; col += n_opt) {
col2 = ColOf(buffer, col, margin);
MvInsNStr(row, col2, buffer + col, LEN(col));
}
} else {
MvInsStr(row, col2, buffer);
}
break;
case oWindow:
if (n_opt > 1) {
for (col = 0; col < length; col += n_opt) {
col2 = ColOf(buffer, col, margin);
if (wmove(work, row, col2) != ERR) {
WInsNStr(work, buffer + col, LEN(col));
}
}
} else {
if (wmove(work, row, col2) != ERR) {
WInsStr(work, buffer);
}
}
break;
case oMoveWindow:
if (n_opt > 1) {
for (col = 0; col < length; col += n_opt) {
col2 = ColOf(buffer, col, margin);
MvWInsNStr(work, row, col2, buffer + col, LEN(col));
}
} else {
MvWInsStr(work, row, col2, buffer);
}
break;
}
/* do the corresponding single-character insertion */
row2 = limit + row;
for (col = 0; col < length; ++col) {
col2 = ColOf(buffer, col, margin);
switch (option) {
case oDefault:
if (move(row2, col2) != ERR) {
InsCh(buffer[col]);
}
break;
case oMove:
MvInsCh(row2, col2, buffer[col]);
break;
case oWindow:
if (wmove(work, row2, col2) != ERR) {
WInsCh(work, buffer[col]);
}
break;
case oMoveWindow:
MvWInsCh(work, row2, col2, buffer[col]);
break;
}
}
} else {
beep();
}
break;
case KEY_BACKSPACE:
ch = '\b';
/* FALLTHRU */
default:
buffer[length++] = ch;
buffer[length] = '\0';
/* put the string in, one character at a time */
col = ColOf(buffer, length - 1, margin);
switch (option) {
case oDefault:
if (move(row, col) != ERR) {
InsStr(buffer + length - 1);
}
break;
case oMove:
MvInsStr(row, col, buffer + length - 1);
break;
case oWindow:
if (wmove(work, row, col) != ERR) {
WInsStr(work, buffer + length - 1);
}
break;
case oMoveWindow:
MvWInsStr(work, row, col, buffer + length - 1);
break;
}
/* do the corresponding single-character insertion */
switch (option) {
case oDefault:
if (move(limit + row, col) != ERR) {
InsCh(ch);
}
break;
case oMove:
MvInsCh(limit + row, col, ch);
break;
case oWindow:
if (wmove(work, limit + row, col) != ERR) {
WInsCh(work, ch);
}
break;
case oMoveWindow:
MvWInsCh(work, limit + row, col, ch);
break;
}
wnoutrefresh(work);
legend(show, level, option, buffer, length);
wnoutrefresh(show);
doupdate();
break;
}
}
if (level > 0) {
delwin(show);
delwin(work);
delwin(look);
}
}
static void
usage(void)
{
static const char *tbl[] =
{
"Usage: inserts [options]"
,""
,"Options:"
," -n NUM limit string-inserts to NUM bytes on ^N replay"
," -m perform wmove/move separately from insert-functions"
," -w use window-parameter even when stdscr would be implied"
};
unsigned n;
for (n = 0; n < SIZEOF(tbl); ++n)
fprintf(stderr, "%s\n", tbl[n]);
ExitProgram(EXIT_FAILURE);
}
int
main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
{
int ch;
setlocale(LC_ALL, "");
while ((ch = getopt(argc, argv, "mn:w")) != EOF) {
switch (ch) {
case 'm':
m_opt = TRUE;
break;
case 'n':
n_opt = atoi(optarg);
if (n_opt == 0)
n_opt = -1;
break;
case 'w':
w_opt = TRUE;
break;
default:
usage();
break;
}
}
if (optind < argc)
usage();
test_inserts(0);
endwin();
ExitProgram(EXIT_SUCCESS);
}
#else
int
main(void)
{
printf("This program requires the wide-ncurses library\n");
ExitProgram(EXIT_FAILURE);
}
#endif
|