--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/common/ucnv_bld.h Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,270 @@
+/*
+**********************************************************************
+* Copyright (C) 1999-2005, International Business Machines
+* Corporation and others. All Rights Reserved.
+**********************************************************************
+*
+*
+* ucnv_bld.h:
+* Contains internal data structure definitions
+* Created by Bertrand A. Damiba
+*
+* Change history:
+*
+* 06/29/2000 helena Major rewrite of the callback APIs.
+*/
+
+#ifndef UCNV_BLD_H
+#define UCNV_BLD_H
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_CONVERSION
+
+#include "unicode/ucnv.h"
+#include "unicode/ucnv_err.h"
+#include "ucnv_cnv.h"
+#include "ucnvmbcs.h"
+#include "ucnv_ext.h"
+#include "udataswp.h"
+
+/* size of the overflow buffers in UConverter, enough for escaping callbacks */
+#define UCNV_ERROR_BUFFER_LENGTH 32
+
+/* at most 4 bytes per substitution character (part of .cnv file format! see UConverterStaticData) */
+#define UCNV_MAX_SUBCHAR_LEN 4
+
+/* at most 8 bytes per character in toUBytes[] (UTF-8 uses up to 6) */
+#define UCNV_MAX_CHAR_LEN 8
+
+/* converter options bits */
+#define UCNV_OPTION_VERSION 0xf
+#define UCNV_OPTION_SWAP_LFNL 0x10
+
+
+U_CDECL_BEGIN /* We must declare the following as 'extern "C"' so that if ucnv
+ itself is compiled under C++, the linkage of the funcptrs will
+ work.
+ */
+
+union UConverterTable {
+ UConverterMBCSTable mbcs;
+};
+
+typedef union UConverterTable UConverterTable;
+
+struct UConverterImpl;
+typedef struct UConverterImpl UConverterImpl;
+
+/** values for the unicodeMask */
+#define UCNV_HAS_SUPPLEMENTARY 1
+#define UCNV_HAS_SURROGATES 2
+
+typedef struct UConverterStaticData { /* +offset: size */
+ uint32_t structSize; /* +0: 4 Size of this structure */
+
+ char name
+ [UCNV_MAX_CONVERTER_NAME_LENGTH]; /* +4: 60 internal name of the converter- invariant chars */
+
+ int32_t codepage; /* +64: 4 codepage # (now IBM-$codepage) */
+
+ int8_t platform; /* +68: 1 platform of the converter (only IBM now) */
+ int8_t conversionType; /* +69: 1 conversion type */
+
+ int8_t minBytesPerChar; /* +70: 1 Minimum # bytes per char in this codepage */
+ int8_t maxBytesPerChar; /* +71: 1 Maximum # bytes output per UChar in this codepage */
+
+ uint8_t subChar[UCNV_MAX_SUBCHAR_LEN]; /* +72: 4 [note: 4 and 8 byte boundary] */
+ int8_t subCharLen; /* +76: 1 */
+
+ uint8_t hasToUnicodeFallback; /* +77: 1 UBool needs to be changed to UBool to be consistent across platform */
+ uint8_t hasFromUnicodeFallback; /* +78: 1 */
+ uint8_t unicodeMask; /* +79: 1 bit 0: has supplementary bit 1: has single surrogates */
+ uint8_t subChar1; /* +80: 1 single-byte substitution character for IBM MBCS (0 if none) */
+ uint8_t reserved[19]; /* +81: 19 to round out the structure */
+ /* total size: 100 */
+} UConverterStaticData;
+
+/*
+ * Defines the UConverterSharedData struct,
+ * the immutable, shared part of UConverter.
+ */
+struct UConverterSharedData {
+ uint32_t structSize; /* Size of this structure */
+ uint32_t referenceCounter; /* used to count number of clients, 0xffffffff for static SharedData */
+
+ const void *dataMemory; /* from udata_openChoice() - for cleanup */
+ void *table; /* Unused. This used to be a UConverterTable - Pointer to conversion data - see mbcs below */
+
+ const UConverterStaticData *staticData; /* pointer to the static (non changing) data. */
+
+ UBool sharedDataCached; /* TRUE: shared data is in cache, don't destroy on ucnv_close() if 0 ref. FALSE: shared data isn't in the cache, do attempt to clean it up if the ref is 0 */
+ /*UBool staticDataOwned; TRUE if static data owned by shared data & should be freed with it, NEVER true for udata() loaded statics. This ignored variable was removed to make space for sharedDataCached. */
+
+ const UConverterImpl *impl; /* vtable-style struct of mostly function pointers */
+
+ /*initial values of some members of the mutable part of object */
+ uint32_t toUnicodeStatus;
+
+ /*
+ * Shared data structures currently come in two flavors:
+ * - readonly for built-in algorithmic converters
+ * - allocated for MBCS, with a pointer to an allocated UConverterTable
+ * which always has a UConverterMBCSTable
+ *
+ * To eliminate one allocation, I am making the UConverterMBCSTable
+ * a member of the shared data. It is the last member so that static
+ * definitions of UConverterSharedData work as before.
+ * The table field above also remains to avoid updating all static
+ * definitions, but is now unused.
+ *
+ * markus 2003-nov-07
+ */
+ UConverterMBCSTable mbcs;
+};
+
+/* Defines a UConverter, the lightweight mutable part the user sees */
+
+struct UConverter {
+ /*
+ * Error function pointer called when conversion issues
+ * occur during a ucnv_fromUnicode call
+ */
+ void (U_EXPORT2 *fromUCharErrorBehaviour) (const void *context,
+ UConverterFromUnicodeArgs *args,
+ const UChar *codeUnits,
+ int32_t length,
+ UChar32 codePoint,
+ UConverterCallbackReason reason,
+ UErrorCode *);
+ /*
+ * Error function pointer called when conversion issues
+ * occur during a ucnv_toUnicode call
+ */
+ void (U_EXPORT2 *fromCharErrorBehaviour) (const void *context,
+ UConverterToUnicodeArgs *args,
+ const char *codeUnits,
+ int32_t length,
+ UConverterCallbackReason reason,
+ UErrorCode *);
+
+ /*
+ * Pointer to additional data that depends on the converter type.
+ * Used by ISO 2022, SCSU, GB 18030 converters, possibly more.
+ */
+ void *extraInfo;
+
+ const void *fromUContext;
+ const void *toUContext;
+
+ UConverterSharedData *sharedData; /* Pointer to the shared immutable part of the converter object */
+
+ uint32_t options; /* options flags from UConverterOpen, may contain additional bits */
+
+ UBool sharedDataIsCached; /* TRUE: shared data is in cache, don't destroy on ucnv_close() if 0 ref. FALSE: shared data isn't in the cache, do attempt to clean it up if the ref is 0 */
+ UBool isCopyLocal; /* TRUE if UConverter is not owned and not released in ucnv_close() (stack-allocated, safeClone(), etc.) */
+ UBool isExtraLocal; /* TRUE if extraInfo is not owned and not released in ucnv_close() (stack-allocated, safeClone(), etc.) */
+
+ UBool useFallback;
+ int8_t toULength; /* number of bytes in toUBytes */
+ uint8_t toUBytes[UCNV_MAX_CHAR_LEN-1];/* more "toU status"; keeps the bytes of the current character */
+ uint32_t toUnicodeStatus; /* Used to internalize stream status information */
+ int32_t mode;
+ uint32_t fromUnicodeStatus;
+
+ /*
+ * More fromUnicode() status. Serves 3 purposes:
+ * - keeps a lead surrogate between buffers (similar to toUBytes[])
+ * - keeps a lead surrogate at the end of the stream,
+ * which the framework handles as truncated input
+ * - if the fromUnicode() implementation returns to the framework
+ * (ucnv.c ucnv_fromUnicode()), then the framework calls the callback
+ * for this code point
+ */
+ UChar32 fromUChar32;
+
+ /*
+ * value for ucnv_getMaxCharSize()
+ *
+ * usually simply copied from the static data, but ucnvmbcs.c modifies
+ * the value depending on the converter type and options
+ */
+ int8_t maxBytesPerUChar;
+
+ int8_t subCharLen; /* length of the codepage specific character sequence */
+ int8_t invalidCharLength;
+ int8_t charErrorBufferLength; /* number of valid bytes in charErrorBuffer */
+
+ int8_t invalidUCharLength;
+ int8_t UCharErrorBufferLength; /* number of valid UChars in charErrorBuffer */
+
+ uint8_t subChar1; /* single-byte substitution character if different from subChar */
+ UBool useSubChar1;
+ uint8_t subChar[UCNV_MAX_SUBCHAR_LEN]; /* codepage specific character sequence */
+ char invalidCharBuffer[UCNV_MAX_CHAR_LEN]; /* bytes from last error/callback situation */
+ uint8_t charErrorBuffer[UCNV_ERROR_BUFFER_LENGTH]; /* codepage output from Error functions */
+
+ UChar invalidUCharBuffer[U16_MAX_LENGTH]; /* UChars from last error/callback situation */
+ UChar UCharErrorBuffer[UCNV_ERROR_BUFFER_LENGTH]; /* unicode output from Error functions */
+
+ /* fields for conversion extension */
+
+ /* store previous UChars/chars to continue partial matches */
+ UChar32 preFromUFirstCP; /* >=0: partial match */
+ UChar preFromU[UCNV_EXT_MAX_UCHARS];
+ char preToU[UCNV_EXT_MAX_BYTES];
+ int8_t preFromULength, preToULength; /* negative: replay */
+ int8_t preToUFirstLength; /* length of first character */
+};
+
+U_CDECL_END /* end of UConverter */
+
+#define CONVERTER_FILE_EXTENSION ".cnv"
+
+
+/**
+ * Return the number of all converter names.
+ * @param pErrorCode The error code
+ * @return the number of all converter names
+ */
+U_CFUNC uint16_t
+ucnv_bld_countAvailableConverters(UErrorCode *pErrorCode);
+
+/**
+ * Return the (n)th converter name in mixed case, or NULL
+ * if there is none (typically, if the data cannot be loaded).
+ * 0<=index<ucnv_io_countAvailableConverters().
+ * @param n The number specifies which converter name to get
+ * @param pErrorCode The error code
+ * @return the (n)th converter name in mixed case, or NULL if there is none.
+ */
+U_CFUNC const char *
+ucnv_bld_getAvailableConverter(uint16_t n, UErrorCode *pErrorCode);
+
+/**
+ * Load a non-algorithmic converter.
+ * If pkg==NULL, then this function must be called inside umtx_lock(&cnvCacheMutex).
+ */
+UConverterSharedData *
+ucnv_load(UConverterLoadArgs *pArgs, UErrorCode *err);
+
+/**
+ * Unload a non-algorithmic converter.
+ * It must be sharedData->referenceCounter != ~0
+ * and this function must be called inside umtx_lock(&cnvCacheMutex).
+ */
+void
+ucnv_unload(UConverterSharedData *sharedData);
+
+/**
+ * Swap ICU .cnv conversion tables. See udataswp.h.
+ * @internal
+ */
+U_CAPI int32_t U_EXPORT2
+ucnv_swap(const UDataSwapper *ds,
+ const void *inData, int32_t length, void *outData,
+ UErrorCode *pErrorCode);
+
+#endif
+
+#endif /* _UCNV_BLD */