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#import "Foundation/NSString.h"
#import "Foundation/NSException.h"
#import "GSPrivate.h"
#if defined(HAVE_UNICODE_UTEXT_H)
#include <unicode/utext.h>
#elif defined(HAVE_ICU_H)
#include <icu.h>
// icu.h in Windows 10 is missing a declaration of UTEXT_MAGIC
#ifndef UTEXT_MAGIC
#define UTEXT_MAGIC 0x345ad82c
#endif
#endif
/*
* Define TRUE/FALSE to be used with UBool parameters, as these are no longer
* defined in ICU as of ICU 68.
*/
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/**
* Initialises a UText structure with an NSString. If txt is NULL, then this
* allocates a new structure on the heap, otherwise it fills in the existing
* one.
*
* The returned UText object holds a reference to the NSString and accesses its
* contents directly.
*/
UText* UTextInitWithNSString(UText *txt, NSString *str) GS_ATTRIB_PRIVATE;
/**
* Initialises a UText structure with an NSMutableString. If txt is NULL, then
* this allocates a new structure on the heap, otherwise it fills in the
* existing one.
*
* The returned UText object holds a reference to the NSMutableString and
* accesses its contents directly.
*
* This function returns a mutable UText, and changes made to it will be
* reflected in the underlying NSMutableString.
*/
UText* UTextInitWithNSMutableString(UText *txt, NSMutableString *str)
GS_ATTRIB_PRIVATE;
/**
* GSUTextString is an NSString subclass that is backed by a libicu UText
* structure. This class is intended to be used when returning UText created
* by libicu functions to Objective-C code.
*/
@interface GSUTextString : NSString
{
@public
/** The UText structure containing the libicu string interface. */
UText txt;
}
@end
/**
* GSUTextString is an NSMutableString subclass that is backed by a libicu
* UText structure. This class is intended to be used when returning UText
* created by libicu functions to Objective-C code.
*/
@interface GSUTextMutableString : NSMutableString
{
@public
/** The UText structure containing the libicu string interface. */
UText txt;
}
@end
/**
* Cleanup function used to fee a unichar buffer.
*/
static inline void free_string(unichar **buf)
{
if (0 != *buf)
{
free(*buf);
}
}
/**
* Allocates a temporary buffer of the requested size. This allocates buffers
* of up to 64 bytes on the stack or more than 64 bytes on the heap. The
* buffer is automatically destroyed when it goes out of scope in either case.
*
* Buffers created in this way are exception safe when using native exceptions.
*/
#define TEMP_BUFFER(name, length)\
__attribute__((cleanup(free_string))) unichar *name ##_onheap = 0;\
unichar name ## _onstack[64];\
unichar *name = name ## _onstack;\
if (length > 64)\
{\
name ## _onheap = malloc(length * sizeof(unichar));\
name = name ## _onheap;\
}
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