GIF89a;
Mini Shell
Mini Shell
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/*
* $Id: test_getstr.c,v 1.10 2012/07/07 18:22:49 tom Exp $
*
* Author: Thomas E Dickey
*
* Demonstrate the getstr functions from the curses library.
int getstr(char *str);
int getnstr(char *str, int n);
int wgetstr(WINDOW *win, char *str);
int wgetnstr(WINDOW *win, char *str, int n);
int mvgetstr(int y, int x, char *str);
int mvwgetstr(WINDOW *win, int y, int x, char *str);
int mvgetnstr(int y, int x, char *str, int n);
int mvwgetnstr(WINDOW *, int y, int x, char *str, int n);
*/
#include <test.priv.h>
#if HAVE_CHGAT
/* Solaris SVr4 curses lacks wchgat, mvgetnstr, mvwgetnstr */
#define BASE_Y 6
#define MAX_COLS 1024
typedef enum {
eGetStr = 0,
eGetNStr,
eMvGetStr,
eMvGetNStr,
eMaxFlavor
} Flavors;
/*
* Return-code is OK/ERR or a keyname.
*/
static const char *
ok_keyname(int code)
{
return ((code == OK) ? "OK" : ((code == ERR) ? "ERR" : keyname(code)));
}
static bool
Quit(int ch)
{
return (ch == ERR || ch == 'q' || ch == QUIT || ch == ESCAPE);
}
static int
Remainder(WINDOW *txtwin)
{
int result = getmaxx(txtwin) - getcurx(txtwin);
return (result > 0) ? result : 0;
}
/*
* Show a highlighted line in the place where input will happen.
*/
static void
ShowPrompt(WINDOW *txtwin, int limit)
{
wchgat(txtwin, limit, A_REVERSE, 0, NULL);
wnoutrefresh(txtwin);
}
static void
MovePrompt(WINDOW *txtwin, int limit, int y, int x)
{
wchgat(txtwin, Remainder(txtwin), A_NORMAL, 0, NULL);
wmove(txtwin, y, x);
ShowPrompt(txtwin, limit);
}
static int
ShowFlavor(WINDOW *strwin, WINDOW *txtwin, int flavor, int limit)
{
const char *name = "?";
bool limited = FALSE;
bool wins = (txtwin != stdscr);
int result;
switch (flavor) {
case eGetStr:
name = wins ? "wgetstr" : "getstr";
break;
case eGetNStr:
limited = TRUE;
name = wins ? "wgetnstr" : "getnstr";
break;
case eMvGetStr:
name = wins ? "mvwgetstr" : "mvgetstr";
break;
case eMvGetNStr:
limited = TRUE;
name = wins ? "mvwgetnstr" : "mvgetnstr";
break;
case eMaxFlavor:
break;
}
wmove(strwin, 0, 0);
werase(strwin);
if (limited) {
wprintw(strwin, "%s(%d):", name, limit);
} else {
wprintw(strwin, "%s:", name);
}
result = limited ? limit : Remainder(txtwin);
ShowPrompt(txtwin, result);
wnoutrefresh(strwin);
return result;
}
static int
test_getstr(int level, char **argv, WINDOW *strwin)
{
WINDOW *txtbox = 0;
WINDOW *txtwin = 0;
FILE *fp;
int ch;
int rc;
int txt_x = 0, txt_y = 0;
int base_y;
int flavor = 0;
int limit = getmaxx(strwin) - 5;
int actual;
char buffer[MAX_COLS];
if (argv[level] == 0) {
beep();
return FALSE;
}
if (level > 1) {
txtbox = newwin(LINES - BASE_Y, COLS - level, BASE_Y, level);
box(txtbox, 0, 0);
wnoutrefresh(txtbox);
txtwin = derwin(txtbox,
getmaxy(txtbox) - 2,
getmaxx(txtbox) - 2,
1, 1);
base_y = 0;
} else {
txtwin = stdscr;
base_y = BASE_Y;
}
keypad(txtwin, TRUE); /* enable keyboard mapping */
(void) cbreak(); /* take input chars one at a time, no wait for \n */
(void) noecho(); /* don't echo input */
txt_y = base_y;
txt_x = 0;
wmove(txtwin, txt_y, txt_x);
if ((fp = fopen(argv[level], "r")) != 0) {
while ((ch = fgetc(fp)) != EOF) {
if (waddch(txtwin, UChar(ch)) != OK) {
break;
}
}
fclose(fp);
} else {
wprintw(txtwin, "Cannot open:\n%s", argv[1]);
}
wmove(txtwin, txt_y, txt_x);
actual = ShowFlavor(strwin, txtwin, flavor, limit);
while (!Quit(ch = mvwgetch(txtwin, txt_y, txt_x))) {
switch (ch) {
case KEY_DOWN:
case 'j':
if (txt_y < getmaxy(txtwin) - 1) {
MovePrompt(txtwin, actual, ++txt_y, txt_x);
} else {
beep();
}
break;
case KEY_UP:
case 'k':
if (txt_y > base_y) {
MovePrompt(txtwin, actual, --txt_y, txt_x);
} else {
beep();
}
break;
case KEY_LEFT:
case 'h':
if (txt_x > 0) {
MovePrompt(txtwin, actual, txt_y, --txt_x);
} else {
beep();
}
break;
case KEY_RIGHT:
case 'l':
if (txt_x < getmaxx(txtwin) - 1) {
MovePrompt(txtwin, actual, txt_y, ++txt_x);
} else {
beep();
}
break;
case 'w':
test_getstr(level + 1, argv, strwin);
if (txtbox != 0) {
touchwin(txtbox);
wnoutrefresh(txtbox);
} else {
touchwin(txtwin);
wnoutrefresh(txtwin);
}
break;
case '-':
if (limit > 0) {
actual = ShowFlavor(strwin, txtwin, flavor, --limit);
MovePrompt(txtwin, actual, txt_y, txt_x);
} else {
beep();
}
break;
case '+':
actual = ShowFlavor(strwin, txtwin, flavor, ++limit);
MovePrompt(txtwin, actual, txt_y, txt_x);
break;
case '<':
if (flavor > 0) {
actual = ShowFlavor(strwin, txtwin, --flavor, limit);
MovePrompt(txtwin, actual, txt_y, txt_x);
} else {
beep();
}
break;
case '>':
if (flavor + 1 < eMaxFlavor) {
actual = ShowFlavor(strwin, txtwin, ++flavor, limit);
MovePrompt(txtwin, actual, txt_y, txt_x);
} else {
beep();
}
break;
case ':':
actual = ShowFlavor(strwin, txtwin, flavor, limit);
*buffer = '\0';
rc = ERR;
echo();
(void) wattrset(txtwin, A_REVERSE);
switch (flavor) {
case eGetStr:
if (txtwin != stdscr) {
wmove(txtwin, txt_y, txt_x);
rc = wgetstr(txtwin, buffer);
} else {
move(txt_y, txt_x);
rc = getstr(buffer);
}
break;
case eGetNStr:
if (txtwin != stdscr) {
wmove(txtwin, txt_y, txt_x);
rc = wgetnstr(txtwin, buffer, limit);
} else {
move(txt_y, txt_x);
rc = getnstr(buffer, limit);
}
break;
case eMvGetStr:
if (txtwin != stdscr) {
rc = mvwgetstr(txtwin, txt_y, txt_x, buffer);
} else {
rc = mvgetstr(txt_y, txt_x, buffer);
}
break;
case eMvGetNStr:
if (txtwin != stdscr) {
rc = mvwgetnstr(txtwin, txt_y, txt_x, buffer, limit);
} else {
rc = mvgetnstr(txt_y, txt_x, buffer, limit);
}
break;
case eMaxFlavor:
break;
}
noecho();
(void) wattrset(txtwin, A_NORMAL);
wprintw(strwin, "%s:%s", ok_keyname(rc), buffer);
wnoutrefresh(strwin);
break;
default:
beep();
break;
}
doupdate();
}
if (level > 1) {
delwin(txtwin);
delwin(txtbox);
}
return TRUE;
}
int
main(int argc, char *argv[])
{
WINDOW *chrbox;
WINDOW *strwin;
setlocale(LC_ALL, "");
if (argc < 2) {
fprintf(stderr, "usage: %s file\n", argv[0]);
return EXIT_FAILURE;
}
initscr();
chrbox = derwin(stdscr, BASE_Y, COLS, 0, 0);
box(chrbox, 0, 0);
wnoutrefresh(chrbox);
strwin = derwin(chrbox, 4, COLS - 2, 1, 1);
test_getstr(1, argv, strwin);
endwin();
ExitProgram(EXIT_SUCCESS);
}
#else
int
main(void)
{
printf("This program requires the curses chgat function\n");
ExitProgram(EXIT_FAILURE);
}
#endif
./BlackJoker Mini Shell 1.0