Index: icu46/source/common/ucnv_bld.h |
=================================================================== |
--- icu46/source/common/ucnv_bld.h (revision 0) |
+++ icu46/source/common/ucnv_bld.h (revision 0) |
@@ -0,0 +1,285 @@ |
+/* |
+********************************************************************** |
+* Copyright (C) 1999-2009 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 |
+ |
+#define UCNV_GET_VERSION(cnv) ((cnv)->options&UCNV_OPTION_VERSION) |
+ |
+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; |
+ |
+ /* |
+ * Pointer to charset bytes for substitution string if subCharLen>0, |
+ * or pointer to Unicode string (UChar *) if subCharLen<0. |
+ * subCharLen==0 is equivalent to using a skip callback. |
+ * If the pointer is !=subUChars then it is allocated with |
+ * UCNV_ERROR_BUFFER_LENGTH * U_SIZEOF_UCHAR bytes. |
+ * The subUChars field is declared as UChar[] not uint8_t[] to |
+ * guarantee alignment for UChars. |
+ */ |
+ uint8_t *subChars; |
+ |
+ 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; |
+ 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 subUChars[UCNV_MAX_SUBCHAR_LEN/U_SIZEOF_UCHAR]; /* see subChars documentation */ |
+ |
+ 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 */ |
+ |
+ /* new fields for ICU 4.0 */ |
+ UConverterCallbackReason toUCallbackReason; /* (*fromCharErrorBehaviour) reason, set when error is detected */ |
+}; |
+ |
+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 */ |
Property changes on: icu46/source/common/ucnv_bld.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |