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Implement returns of special character codes

This commit is contained in:
R. Eric Wheeler 2021-02-15 11:44:39 -08:00
parent ad7928afde
commit be74c6f097
8 changed files with 395 additions and 92 deletions
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144
composer.lock generated
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@ -377,16 +377,16 @@
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@ -1351,16 +1351,16 @@
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@ -1438,7 +1438,7 @@
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@ -2648,7 +2648,7 @@
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@ -3063,7 +3063,7 @@
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@ -3071,7 +3071,7 @@
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@ -3987,7 +3987,7 @@
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30
src/Console/Getch.php
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@ -19,6 +19,31 @@ use RuntimeException;
final class Getch final class Getch
{ {
// Special key codes
public const GETCH_SPECIAL = 0;
public const GETCH_F1 = 59;
public const GETCH_F2 = 60;
public const GETCH_F3 = 61;
public const GETCH_F4 = 62;
public const GETCH_F5 = 63;
public const GETCH_F6 = 64;
public const GETCH_F7 = 65;
public const GETCH_F8 = 66;
public const GETCH_F9 = 67;
public const GETCH_F10 = 68;
public const GETCH_F11 = 87;
public const GETCH_F12 = 88;
public const GETCH_UP_ARROW = 72;
public const GETCH_LEFT_ARROW = 75;
public const GETCH_RIGHT_ARROW = 77;
public const GETCH_DOWN_ARROW = 80;
public const GETCH_DELETE = 83;
public const GETCH_HOME = 102;
public const GETCH_PGUP = 104;
public const GETCH_END = 107;
public const GETCH_PGDN = 109;
public const GETCH_INSERT = 110;
private const LINUX_LIBRARY = __DIR__.'/Resources/libgetch.so'; private const LINUX_LIBRARY = __DIR__.'/Resources/libgetch.so';
private const WINDOWS_LIBRARY = 'ucrtbase.dll'; private const WINDOWS_LIBRARY = 'ucrtbase.dll';
private const DECLARATIONS = <<<DECLARATIONS private const DECLARATIONS = <<<DECLARATIONS
@ -28,6 +53,11 @@ final class Getch
private static ?FFI $ffi = null; private static ?FFI $ffi = null;
public static function resetFFI(): void
{
static::$ffi = null;
}
public function __construct(string $linuxLibrary = null) public function __construct(string $linuxLibrary = null)
{ {
if (null === $linuxLibrary) { if (null === $linuxLibrary) {

268
src/Console/Resources/getch.c
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@ -3,8 +3,15 @@
#include <unistd.h> #include <unistd.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
static struct termios oldattr; #include <errno.h>
#include <fcntl.h>
#define CTRL_KEY(k) ((k) & 0x1f)
static struct termios oldattr;
static int stdin_flags;
/*
static char *strrev(char *str) static char *strrev(char *str)
{ {
char *p1, *p2; char *p1, *p2;
@ -19,26 +26,152 @@ static char *strrev(char *str)
} }
return str; return str;
} }
*/
static void setRawMode(void)
{
struct termios newattr;
tcgetattr(STDIN_FILENO, &oldattr);
newattr = oldattr;
cfmakeraw(&newattr);
tcsetattr(STDIN_FILENO, TCSANOW, &newattr);
}
static void setNormalMode(void) static void setNormalMode(void)
{ {
tcsetattr(STDIN_FILENO, TCSANOW, &oldattr); tcsetattr(STDIN_FILENO, TCSANOW, &oldattr);
fcntl(STDIN_FILENO, F_SETFL, stdin_flags);
} }
static void setRawMode(void)
{
tcgetattr(STDIN_FILENO, &oldattr);
atexit(setNormalMode);
struct termios raw = oldattr;
raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
raw.c_oflag &= ~(OPOST);
raw.c_cflag |= (CS8);
raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
raw.c_cc[VMIN] = 0;
raw.c_cc[VTIME] = 1;
tcsetattr(STDIN_FILENO, TCSANOW, &raw);
}
// F1 - 59
// F2 - 60,
// F3 - 61,
// F2 - 62
// F1-12 = 59 - 68
enum special_keycodes {
GETCH_F1 = 59,
GETCH_F2,
GETCH_F3,
GETCH_F4,
GETCH_F5,
GETCH_F6,
GETCH_F7,
GETCH_F8,
GETCH_F9,
GETCH_F10,
GETCH_UP_ARROW = 72,
GETCH_LEFT_ARROW = 75,
GETCH_RIGHT_ARROW = 77,
GETCH_DOWN_ARROW = 80,
GETCH_DELETE = 83,
GETCH_F11 = 87,
GETCH_F12,
GETCH_HOME = 102,
GETCH_PGUP = 104,
GETCH_END = 107,
GETCH_PGDOWN = 109,
GETCH_INSERT
};
void _ungetc(int c) {
ungetc(c, stdin);
}
int readKey(void) {
int bytesRead;
char key;
while ((key = fgetc(stdin)) == EOF) {
}
if (key == '\x1b') {
char seq[4];
if ((seq[0] = getchar()) == EOF) return '\x1b'; // [
if ((seq[1] = getchar()) == EOF) return '\x1b';
if (seq[0] == '[') {
if(seq[1] == 'H') { _ungetc(GETCH_HOME); return 0; }
if(seq[1] == 'F') { _ungetc(GETCH_END); return 0; }
if (seq[1] >= '0' && seq[1] <= '9') {
if ((seq[2] = getchar()) == EOF) return '\x1b';
if (seq[2] == '~') {
switch (seq[1]) {
case '1': _ungetc(GETCH_HOME); return 0;
case '2': _ungetc(GETCH_INSERT); return 0;
case '3': _ungetc(GETCH_DELETE); return 0;
case '4': _ungetc(GETCH_END); return 0;
case '5': _ungetc(GETCH_PGUP); return 0;
case '6': _ungetc(GETCH_PGDOWN); return 0;
case '7': _ungetc(GETCH_HOME); return 0;
case '8': _ungetc(GETCH_END); return 0;
}
} else if(seq[2] >= '0' && seq[2] <= '9') {
if ((seq[3] = getchar()) == EOF) return '\x1b';
if(seq[3] != '~') return seq[3];
switch(seq[2]) {
case '5': _ungetc(GETCH_F5); return 0;
case '7': _ungetc(GETCH_F6); return 0;
case '8': _ungetc(GETCH_F7); return 0;
case '9': _ungetc(GETCH_F8); return 0;
case '0': _ungetc(GETCH_F9); return 0;
case '1': _ungetc(GETCH_F10); return 0;
case '3': _ungetc(GETCH_F11); return 0;
case '4': _ungetc(GETCH_F12); return 0;
}
} else { return seq[2]; }
} else {
switch (seq[1]) {
case 'A': _ungetc(GETCH_UP_ARROW); return 0;
case 'B': _ungetc(GETCH_DOWN_ARROW); return 0;
case 'C': _ungetc(GETCH_RIGHT_ARROW); return 0;
case 'D': _ungetc(GETCH_LEFT_ARROW); return 0;
case 'H': _ungetc(GETCH_HOME); return 0;
case 'F': _ungetc(GETCH_END); return 0;
}
}
}
else if (seq[0] == 'O') {
switch (seq[1]) {
case 'H': _ungetc(GETCH_HOME); return 0;
case 'F': _ungetc(GETCH_END); return 0;
case 'P': _ungetc(GETCH_F1); return 0;
case 'Q': _ungetc(GETCH_F2); return 0;
case 'R': _ungetc(GETCH_F3); return 0;
case 'S': _ungetc(GETCH_F4); return 0;
}
}
return '\x1b';
} else {
return key;
}
}
int _getch(void) {
setRawMode();
int key = readKey();
setNormalMode();
return key;
}
/* reads from keypress, doesn't echo */ /* reads from keypress, doesn't echo */
int _getch(void) int old_getch(void)
{ {
int ch; int ch;
@ -49,6 +182,113 @@ int _getch(void)
setNormalMode(); setNormalMode();
if(ch == 27) {
char sequence[4];
if (read(STDIN_FILENO, &sequence[0], 1) != 1) return 27; // [
if (read(STDIN_FILENO, &sequence[1], 1) != 1) return 27; // 0-9
switch(ch)
{
case 79: // F1-F4
ch = getchar();
switch(ch) {
case 80: // F1, [ESC]OP
_ungetc(GETCH_F1);
return 0;
break;
case 81: // F2, [ESC]OQ
_ungetc(GETCH_F2);
return 0;
break;
case 82: // F3,, [ESC]OR
_ungetc(61);
return 0;
case 83: // F4, , [ESC]OS
_ungetc(62);
return 0;
}
case 91: // [, Everything else
ch = getchar();
switch(ch) {
case 49: // 1, F5-F8, HOME
ch = getchar();
switch(ch) {
case 53: // 5, F5
getchar(); // get the ~
_ungetc(63);
return 0;
case 55: // 7, F6
getchar();
_ungetc(64);
return 0;
case 56: // 8, F7
getchar();
_ungetc(65);
return 0;
case 57: // 9, F8
getchar();
_ungetc(66);
return 0;
case 126: // ~, HOME
_ungetc(102);
return 0;
}
case 50: // 2, F9-F12, INSERT
ch = getchar();
switch(ch) {
case 48: // 0, F9, [ESC][20~
getchar();
_ungetc(67);
return 0;
case 49: // 1, F10, [ESC][21~
getchar();
_ungetc(68);
return 0;
case 51: // 3, F11, [ESC][23~
getchar();
_ungetc(87);
return 0;
case 52: // 4, F12, [ESC][24~
getchar();
_ungetc(88);
return 0;
case 126: // ~, INSERT, [ESC][2~
_ungetc(110);
return 0;
}
case 51: // 3, DELETE, [ESC][3~
getchar(); // ~
_ungetc(83);
return 0;
case 52: // 4, END, [ESC][4~
getchar(); // ~
_ungetc(107);
return 0;
case 53: // 5, PGUP, [ESC][5~
getchar(); // ~
_ungetc(104);
return 0;
case 54: // 6, PGDN, [ESC][6~
getchar(); // ~
_ungetc(109);
return 0;
case 65: // A, UP_ARROW, [ESC][A //72
_ungetc(72);
return 0;
case 66: // B, DOWN_ARROW, [ESC][B // 80
_ungetc(80);
return 0;
case 67: // C, RIGHT_ARROW, [ESC][C /77
_ungetc(77);
return 0;
case 68: // D, LEFT_ARROW, [ESC][D //75
_ungetc(75);
return 0;
}
}
}
return ch; return ch;
} }

16
src/Console/Resources/keycodes.txt Normal file
View File

@ -0,0 +1,16 @@
F1-10 = 59..68
UP_ARROW = 72
LEFT_ARROW = 75
RIGHT_ARROW = 77
DOWN_ARROW = 80
DELETE = 83
F11-12 = 87..88
HOME = 102
PGUP = 104
END = 107
PGDN = 109
INSERT = 110

BIN
src/Console/Resources/libgetch.so
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23
tests/Getch/GetchTest.php
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@ -8,24 +8,27 @@ use Sikofitt\Console\Getch;
class GetchTest extends TestCase class GetchTest extends TestCase
{ {
private \FFI $ffi; private \FFI $ffi;
private const HOME_KEY = "\x1b[H";
public function setUp(): void public function setUp(): void
{ {
$this->ffi = \FFI::load(__DIR__.'/../test.h'); $this->ffi = \FFI::load(__DIR__.'/../test.h');
$stdin = $this->ffi->stdin; $file = $this->ffi->stdin;
$stdin = $this->ffi->fopen('/dev/stdin', 'a+');
foreach (range('D', 'A') as $character) { foreach (range('D', 'A') as $character) {
$this->ffi->ungetc(ord($character), $stdin); $this->ffi->ungetc(ord($character), $file);
} }
parent::setUp(); // TODO: Change the autogenerated stub
} }
/** /**
* @preserveGlobalState disabled * @preserveGlobalState disabled
* @backupStaticAttributes false
* @backupGlobals false
*/ */
public function testFailureOnInvalidLibrary() public function testFailureOnInvalidLibrary()
{ {
Getch::resetFFI();
$this->expectException(\RuntimeException::class); $this->expectException(\RuntimeException::class);
\getch(__DIR__.'/library.so'); \getch(__DIR__.'/library.so');
} }
@ -53,4 +56,16 @@ class GetchTest extends TestCase
$this->expectException(\RuntimeException::class); $this->expectException(\RuntimeException::class);
\getch(); \getch();
} }
public function testHomeKey()
{
$stdin = $this->ffi->stdin;
foreach (str_split(strrev(self::HOME_KEY)) as $character) {
$this->ffi->ungetc(ord($character), $stdin);
}
$g = new Getch();
self::assertEquals(0, $g->getch());
self::assertEquals(102, $g->getch());
}
} }

2
tests/test.h
View File

@ -13,5 +13,7 @@ typedef struct _iobuf
FILE *stdin; FILE *stdin;
FILE *fopen(const char *filename, const char *mode);
int ungetc(int ch, FILE *stream); int ungetc(int ch, FILE *stream);