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* For example, on Windows XP, when using Windows XP's console, changing the
* codepage to UTF-8 mostly breaks write() and completely breaks read():
* write() suddenly returns the number of characters - instead of bytes -
* written and read() just returns 0 as soon as a Unicode character is being
* read.
*
* Therefore, instead of just using the UTF-8 codepage, this captures all reads
* and writes to of_std{in,out,err} on the low level, interprets the buffer as
* UTF-8 and converts to / from UTF-16 to use ReadConsoleW() / WriteConsoleW().
* Doing so is safe, as the console only supports text anyway and thus it does
* not matter if binary gets garbled by the conversion (e.g. because invalid
* UTF-8 gets converted to U+FFFD).
*
* In order to not do this when redirecting input / output to a file (as the
* file would then be read / written in the wrong encoding and break reading /
* writing binary), it checks that the handle is indeed a console.
*/
#define OF_STDIO_STREAM_WIN32_CONSOLE_M
#include "config.h"
#include <assert.h>
#include <errno.h>
#include <io.h>
#import "OFWin32ConsoleStdIOStream.h"
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* For example, on Windows XP, when using Windows XP's console, changing the
* codepage to UTF-8 mostly breaks write() and completely breaks read():
* write() suddenly returns the number of characters - instead of bytes -
* written and read() just returns 0 as soon as a Unicode character is being
* read.
*
* Therefore, instead of just using the UTF-8 codepage, this captures all reads
* and writes to OFStd{In,Out,Err} on the low level, interprets the buffer as
* UTF-8 and converts to / from UTF-16 to use ReadConsoleW() / WriteConsoleW().
* Doing so is safe, as the console only supports text anyway and thus it does
* not matter if binary gets garbled by the conversion (e.g. because invalid
* UTF-8 gets converted to U+FFFD).
*
* In order to not do this when redirecting input / output to a file (as the
* file would then be read / written in the wrong encoding and break reading /
* writing binary), it checks that the handle is indeed a console.
*/
#include "config.h"
#include <assert.h>
#include <errno.h>
#include <io.h>
#import "OFWin32ConsoleStdIOStream.h"
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#import "OFInvalidEncodingException.h"
#import "OFOutOfRangeException.h"
#import "OFReadFailedException.h"
#import "OFWriteFailedException.h"
#include <windows.h>
static of_string_encoding_t
codepageToEncoding(UINT codepage)
{
switch (codepage) {
case 437:
return OF_STRING_ENCODING_CODEPAGE_437;
case 850:
return OF_STRING_ENCODING_CODEPAGE_850;
case 858:
return OF_STRING_ENCODING_CODEPAGE_858;
case 1251:
return OF_STRING_ENCODING_WINDOWS_1251;
case 1252:
return OF_STRING_ENCODING_WINDOWS_1252;
default:
@throw [OFInvalidEncodingException exception];
}
}
@implementation OFWin32ConsoleStdIOStream
+ (void)load
{
int fd;
if (self != [OFWin32ConsoleStdIOStream class])
return;
if ((fd = _fileno(stdin)) >= 0)
of_stdin = [[OFWin32ConsoleStdIOStream alloc]
of_initWithFileDescriptor: fd];
if ((fd = _fileno(stdout)) >= 0)
of_stdout = [[OFWin32ConsoleStdIOStream alloc]
of_initWithFileDescriptor: fd];
if ((fd = _fileno(stderr)) >= 0)
of_stderr = [[OFWin32ConsoleStdIOStream alloc]
of_initWithFileDescriptor: fd];
}
- (instancetype)of_initWithFileDescriptor: (int)fd
{
self = [super of_initWithFileDescriptor: fd];
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#import "OFInvalidEncodingException.h"
#import "OFOutOfRangeException.h"
#import "OFReadFailedException.h"
#import "OFWriteFailedException.h"
#include <windows.h>
static OFStringEncoding
codepageToEncoding(UINT codepage)
{
switch (codepage) {
case 437:
return OFStringEncodingCodepage437;
case 850:
return OFStringEncodingCodepage850;
case 858:
return OFStringEncodingCodepage858;
case 1251:
return OFStringEncodingWindows1251;
case 1252:
return OFStringEncodingWindows1252;
default:
@throw [OFInvalidEncodingException exception];
}
}
@implementation OFWin32ConsoleStdIOStream
+ (void)load
{
int fd;
if (self != [OFWin32ConsoleStdIOStream class])
return;
if ((fd = _fileno(stdin)) >= 0)
OFStdIn = [[OFWin32ConsoleStdIOStream alloc]
of_initWithFileDescriptor: fd];
if ((fd = _fileno(stdout)) >= 0)
OFStdOut = [[OFWin32ConsoleStdIOStream alloc]
of_initWithFileDescriptor: fd];
if ((fd = _fileno(stderr)) >= 0)
OFStdErr = [[OFWin32ConsoleStdIOStream alloc]
of_initWithFileDescriptor: fd];
}
- (instancetype)of_initWithFileDescriptor: (int)fd
{
self = [super of_initWithFileDescriptor: fd];
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[self release];
@throw e;
}
return self;
}
- (size_t)lowlevelReadIntoBuffer: (void *)buffer_
length: (size_t)length
{
void *pool = objc_autoreleasePoolPush();
char *buffer = buffer_;
of_char16_t *UTF16;
size_t j = 0;
if (length > UINT32_MAX)
@throw [OFOutOfRangeException exception];
UTF16 = of_alloc(length, sizeof(of_char16_t));
@try {
DWORD UTF16Len;
OFMutableData *rest = nil;
size_t i = 0;
if ([OFSystemInfo isWindowsNT]) {
if (!ReadConsoleW(_handle, UTF16, (DWORD)length,
&UTF16Len, NULL))
@throw [OFReadFailedException
exceptionWithObject: self
requestedLength: length * 2
errNo: EIO];
} else {
of_string_encoding_t encoding;
OFString *string;
size_t stringLen;
if (!ReadConsoleA(_handle, (char *)UTF16, (DWORD)length,
&UTF16Len, NULL))
@throw [OFReadFailedException
exceptionWithObject: self
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[self release];
@throw e;
}
return self;
}
- (size_t)lowlevelReadIntoBuffer: (void *)buffer_ length: (size_t)length
{
void *pool = objc_autoreleasePoolPush();
char *buffer = buffer_;
OFChar16 *UTF16;
size_t j = 0;
if (length > UINT32_MAX)
@throw [OFOutOfRangeException exception];
UTF16 = OFAllocMemory(length, sizeof(OFChar16));
@try {
DWORD UTF16Len;
OFMutableData *rest = nil;
size_t i = 0;
if ([OFSystemInfo isWindowsNT]) {
if (!ReadConsoleW(_handle, UTF16, (DWORD)length,
&UTF16Len, NULL))
@throw [OFReadFailedException
exceptionWithObject: self
requestedLength: length * 2
errNo: EIO];
} else {
OFStringEncoding encoding;
OFString *string;
size_t stringLen;
if (!ReadConsoleA(_handle, (char *)UTF16, (DWORD)length,
&UTF16Len, NULL))
@throw [OFReadFailedException
exceptionWithObject: self
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@throw [OFOutOfRangeException exception];
UTF16Len = (DWORD)stringLen;
memcpy(UTF16, string.UTF16String, stringLen);
}
if (UTF16Len > 0 && _incompleteUTF16Surrogate != 0) {
of_unichar_t c =
(((_incompleteUTF16Surrogate & 0x3FF) << 10) |
(UTF16[0] & 0x3FF)) + 0x10000;
char UTF8[4];
size_t UTF8Len;
if ((UTF8Len = of_string_utf8_encode(c, UTF8)) == 0)
@throw [OFInvalidEncodingException exception];
if (UTF8Len <= length) {
memcpy(buffer, UTF8, UTF8Len);
j += UTF8Len;
} else {
if (rest == nil)
rest = [OFMutableData data];
[rest addItems: UTF8
count: UTF8Len];
}
_incompleteUTF16Surrogate = 0;
i++;
}
for (; i < UTF16Len; i++) {
of_unichar_t c = UTF16[i];
char UTF8[4];
size_t UTF8Len;
/* Missing high surrogate */
if ((c & 0xFC00) == 0xDC00)
@throw [OFInvalidEncodingException exception];
if ((c & 0xFC00) == 0xD800) {
of_char16_t next;
if (UTF16Len <= i + 1) {
_incompleteUTF16Surrogate = c;
if (rest != nil) {
const char *items = rest.items;
size_t count = rest.count;
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@throw [OFOutOfRangeException exception];
UTF16Len = (DWORD)stringLen;
memcpy(UTF16, string.UTF16String, stringLen);
}
if (UTF16Len > 0 && _incompleteUTF16Surrogate != 0) {
OFUnichar c =
(((_incompleteUTF16Surrogate & 0x3FF) << 10) |
(UTF16[0] & 0x3FF)) + 0x10000;
char UTF8[4];
size_t UTF8Len;
if ((UTF8Len = OFUTF8StringEncode(c, UTF8)) == 0)
@throw [OFInvalidEncodingException exception];
if (UTF8Len <= length) {
memcpy(buffer, UTF8, UTF8Len);
j += UTF8Len;
} else {
if (rest == nil)
rest = [OFMutableData data];
[rest addItems: UTF8 count: UTF8Len];
}
_incompleteUTF16Surrogate = 0;
i++;
}
for (; i < UTF16Len; i++) {
OFUnichar c = UTF16[i];
char UTF8[4];
size_t UTF8Len;
/* Missing high surrogate */
if ((c & 0xFC00) == 0xDC00)
@throw [OFInvalidEncodingException exception];
if ((c & 0xFC00) == 0xD800) {
OFChar16 next;
if (UTF16Len <= i + 1) {
_incompleteUTF16Surrogate = c;
if (rest != nil) {
const char *items = rest.items;
size_t count = rest.count;
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c = (((c & 0x3FF) << 10) | (next & 0x3FF)) +
0x10000;
i++;
}
if ((UTF8Len = of_string_utf8_encode(c, UTF8)) == 0)
@throw [OFInvalidEncodingException exception];
if (j + UTF8Len <= length) {
memcpy(buffer + j, UTF8, UTF8Len);
j += UTF8Len;
} else {
if (rest == nil)
rest = [OFMutableData data];
[rest addItems: UTF8
count: UTF8Len];
}
}
if (rest != nil)
[self unreadFromBuffer: rest.items
length: rest.count];
} @finally {
free(UTF16);
}
objc_autoreleasePoolPop(pool);
return j;
}
- (size_t)lowlevelWriteBuffer: (const void *)buffer_
length: (size_t)length
{
const char *buffer = buffer_;
of_char16_t *tmp;
size_t i = 0, j = 0;
if (length > SIZE_MAX / 2)
@throw [OFOutOfRangeException exception];
if (_incompleteUTF8SurrogateLen > 0) {
of_unichar_t c;
of_char16_t UTF16[2];
ssize_t UTF8Len;
size_t toCopy;
DWORD UTF16Len, bytesWritten;
UTF8Len = -of_string_utf8_decode(
_incompleteUTF8Surrogate, _incompleteUTF8SurrogateLen, &c);
OF_ENSURE(UTF8Len > 0);
toCopy = UTF8Len - _incompleteUTF8SurrogateLen;
if (toCopy > length)
toCopy = length;
memcpy(_incompleteUTF8Surrogate + _incompleteUTF8SurrogateLen,
buffer, toCopy);
_incompleteUTF8SurrogateLen += toCopy;
if (_incompleteUTF8SurrogateLen < (size_t)UTF8Len)
return 0;
UTF8Len = of_string_utf8_decode(
_incompleteUTF8Surrogate, _incompleteUTF8SurrogateLen, &c);
if (UTF8Len <= 0 || c > 0x10FFFF) {
assert(UTF8Len == 0 || UTF8Len < -4);
UTF16[0] = 0xFFFD;
UTF16Len = 1;
|
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c = (((c & 0x3FF) << 10) | (next & 0x3FF)) +
0x10000;
i++;
}
if ((UTF8Len = OFUTF8StringEncode(c, UTF8)) == 0)
@throw [OFInvalidEncodingException exception];
if (j + UTF8Len <= length) {
memcpy(buffer + j, UTF8, UTF8Len);
j += UTF8Len;
} else {
if (rest == nil)
rest = [OFMutableData data];
[rest addItems: UTF8 count: UTF8Len];
}
}
if (rest != nil)
[self unreadFromBuffer: rest.items length: rest.count];
} @finally {
OFFreeMemory(UTF16);
}
objc_autoreleasePoolPop(pool);
return j;
}
- (size_t)lowlevelWriteBuffer: (const void *)buffer_ length: (size_t)length
{
const char *buffer = buffer_;
OFChar16 *tmp;
size_t i = 0, j = 0;
if (length > SIZE_MAX / 2)
@throw [OFOutOfRangeException exception];
if (_incompleteUTF8SurrogateLen > 0) {
OFUnichar c;
OFChar16 UTF16[2];
ssize_t UTF8Len;
size_t toCopy;
DWORD UTF16Len, bytesWritten;
UTF8Len = -OFUTF8StringDecode(
_incompleteUTF8Surrogate, _incompleteUTF8SurrogateLen, &c);
OFEnsure(UTF8Len > 0);
toCopy = UTF8Len - _incompleteUTF8SurrogateLen;
if (toCopy > length)
toCopy = length;
memcpy(_incompleteUTF8Surrogate + _incompleteUTF8SurrogateLen,
buffer, toCopy);
_incompleteUTF8SurrogateLen += toCopy;
if (_incompleteUTF8SurrogateLen < (size_t)UTF8Len)
return 0;
UTF8Len = OFUTF8StringDecode(
_incompleteUTF8Surrogate, _incompleteUTF8SurrogateLen, &c);
if (UTF8Len <= 0 || c > 0x10FFFF) {
assert(UTF8Len == 0 || UTF8Len < -4);
UTF16[0] = 0xFFFD;
UTF16Len = 1;
|
︙ | | | ︙ | |
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bytesWritten: bytesWritten * 2
errNo: EIO];
} else {
void *pool = objc_autoreleasePoolPush();
OFString *string = [OFString
stringWithUTF16String: UTF16
length: UTF16Len];
of_string_encoding_t encoding =
codepageToEncoding(GetConsoleOutputCP());
size_t nativeLen = [string
cStringLengthWithEncoding: encoding];
if (nativeLen > UINT32_MAX)
@throw [OFOutOfRangeException exception];
|
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bytesWritten: bytesWritten * 2
errNo: EIO];
} else {
void *pool = objc_autoreleasePoolPush();
OFString *string = [OFString
stringWithUTF16String: UTF16
length: UTF16Len];
OFStringEncoding encoding =
codepageToEncoding(GetConsoleOutputCP());
size_t nativeLen = [string
cStringLengthWithEncoding: encoding];
if (nativeLen > UINT32_MAX)
@throw [OFOutOfRangeException exception];
|
︙ | | | ︙ | |
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bytesWritten: bytesWritten * 2
errNo: 0];
_incompleteUTF8SurrogateLen = 0;
i += toCopy;
}
tmp = of_alloc(length * 2, sizeof(of_char16_t));
@try {
DWORD bytesWritten;
while (i < length) {
of_unichar_t c;
ssize_t UTF8Len;
UTF8Len = of_string_utf8_decode(buffer + i, length - i,
&c);
if (UTF8Len < 0 && UTF8Len >= -4) {
OF_ENSURE(length - i < 4);
memcpy(_incompleteUTF8Surrogate, buffer + i,
length - i);
_incompleteUTF8SurrogateLen = length - i;
break;
}
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|
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bytesWritten: bytesWritten * 2
errNo: 0];
_incompleteUTF8SurrogateLen = 0;
i += toCopy;
}
tmp = OFAllocMemory(length * 2, sizeof(OFChar16));
@try {
DWORD bytesWritten;
while (i < length) {
OFUnichar c;
ssize_t UTF8Len;
UTF8Len = OFUTF8StringDecode(buffer + i, length - i,
&c);
if (UTF8Len < 0 && UTF8Len >= -4) {
OFEnsure(length - i < 4);
memcpy(_incompleteUTF8Surrogate, buffer + i,
length - i);
_incompleteUTF8SurrogateLen = length - i;
break;
}
|
︙ | | | ︙ | |
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requestedLength: j * 2
bytesWritten: bytesWritten * 2
errNo: EIO];
} else {
void *pool = objc_autoreleasePoolPush();
OFString *string = [OFString stringWithUTF16String: tmp
length: j];
of_string_encoding_t encoding =
codepageToEncoding(GetConsoleOutputCP());
size_t nativeLen = [string
cStringLengthWithEncoding: encoding];
if (nativeLen > UINT32_MAX)
@throw [OFOutOfRangeException exception];
|
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|
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409
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requestedLength: j * 2
bytesWritten: bytesWritten * 2
errNo: EIO];
} else {
void *pool = objc_autoreleasePoolPush();
OFString *string = [OFString stringWithUTF16String: tmp
length: j];
OFStringEncoding encoding =
codepageToEncoding(GetConsoleOutputCP());
size_t nativeLen = [string
cStringLengthWithEncoding: encoding];
if (nativeLen > UINT32_MAX)
@throw [OFOutOfRangeException exception];
|
︙ | | | ︙ | |
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438
439
440
441
442
443
444
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449
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451
|
if (bytesWritten != j)
@throw [OFWriteFailedException
exceptionWithObject: self
requestedLength: j * 2
bytesWritten: bytesWritten * 2
errNo: 0];
} @finally {
free(tmp);
}
/*
* We do not count in bytes when writing to the Win32 console. But
* since any incomplete write is an exception here anyway, we can just
* return length.
*/
|
|
|
430
431
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437
438
439
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|
if (bytesWritten != j)
@throw [OFWriteFailedException
exceptionWithObject: self
requestedLength: j * 2
bytesWritten: bytesWritten * 2
errNo: 0];
} @finally {
OFFreeMemory(tmp);
}
/*
* We do not count in bytes when writing to the Win32 console. But
* since any incomplete write is an exception here anyway, we can just
* return length.
*/
|
︙ | | | ︙ | |
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|
if (!GetConsoleScreenBufferInfo(_handle, &csbi))
return;
csbi.wAttributes &= ~(FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE | FOREGROUND_INTENSITY);
[color getRed: &red
green: &green
blue: &blue
alpha: NULL];
if (red >= 0.25)
csbi.wAttributes |= FOREGROUND_RED;
if (green >= 0.25)
csbi.wAttributes |= FOREGROUND_GREEN;
if (blue >= 0.25)
csbi.wAttributes |= FOREGROUND_BLUE;
|
|
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<
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|
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|
if (!GetConsoleScreenBufferInfo(_handle, &csbi))
return;
csbi.wAttributes &= ~(FOREGROUND_RED | FOREGROUND_GREEN |
FOREGROUND_BLUE | FOREGROUND_INTENSITY);
[color getRed: &red green: &green blue: &blue alpha: NULL];
if (red >= 0.25)
csbi.wAttributes |= FOREGROUND_RED;
if (green >= 0.25)
csbi.wAttributes |= FOREGROUND_GREEN;
if (blue >= 0.25)
csbi.wAttributes |= FOREGROUND_BLUE;
|
︙ | | | ︙ | |
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|
if (!GetConsoleScreenBufferInfo(_handle, &csbi))
return;
csbi.wAttributes &= ~(BACKGROUND_RED | BACKGROUND_GREEN |
BACKGROUND_BLUE | BACKGROUND_INTENSITY);
[color getRed: &red
green: &green
blue: &blue
alpha: NULL];
if (red >= 0.25)
csbi.wAttributes |= BACKGROUND_RED;
if (green >= 0.25)
csbi.wAttributes |= BACKGROUND_GREEN;
if (blue >= 0.25)
csbi.wAttributes |= BACKGROUND_BLUE;
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<
<
<
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if (!GetConsoleScreenBufferInfo(_handle, &csbi))
return;
csbi.wAttributes &= ~(BACKGROUND_RED | BACKGROUND_GREEN |
BACKGROUND_BLUE | BACKGROUND_INTENSITY);
[color getRed: &red green: &green blue: &blue alpha: NULL];
if (red >= 0.25)
csbi.wAttributes |= BACKGROUND_RED;
if (green >= 0.25)
csbi.wAttributes |= BACKGROUND_GREEN;
if (blue >= 0.25)
csbi.wAttributes |= BACKGROUND_BLUE;
|
︙ | | | ︙ | |
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return;
csbi.dwCursorPosition.X = column;
SetConsoleCursorPosition(_handle, csbi.dwCursorPosition);
}
- (void)setCursorPosition: (of_point_t)position
{
if (position.x < 0 || position.y < 0)
@throw [OFInvalidArgumentException exception];
SetConsoleCursorPosition(_handle, (COORD){ position.x, position.y });
}
- (void)setRelativeCursorPosition: (of_point_t)position
{
CONSOLE_SCREEN_BUFFER_INFO csbi;
if (!GetConsoleScreenBufferInfo(_handle, &csbi))
return;
csbi.dwCursorPosition.X += position.x;
csbi.dwCursorPosition.Y += position.y;
SetConsoleCursorPosition(_handle, csbi.dwCursorPosition);
}
@end
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return;
csbi.dwCursorPosition.X = column;
SetConsoleCursorPosition(_handle, csbi.dwCursorPosition);
}
- (void)setCursorPosition: (OFPoint)position
{
if (position.x < 0 || position.y < 0)
@throw [OFInvalidArgumentException exception];
SetConsoleCursorPosition(_handle, (COORD){ position.x, position.y });
}
- (void)setRelativeCursorPosition: (OFPoint)position
{
CONSOLE_SCREEN_BUFFER_INFO csbi;
if (!GetConsoleScreenBufferInfo(_handle, &csbi))
return;
csbi.dwCursorPosition.X += position.x;
csbi.dwCursorPosition.Y += position.y;
SetConsoleCursorPosition(_handle, csbi.dwCursorPosition);
}
@end
|