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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (C) 1999-2011, International Business Machines
+* Corporation and others. All Rights Reserved.
+**********************************************************************
+*
+*
+* ucnv_imp.h:
+* Contains all internal and external data structure definitions
+* Created & Maitained by Bertrand A. Damiba
+*
+*
+*
+* ATTENTION:
+* ---------
+* Although the data structures in this file are open and stack allocatable
+* we reserve the right to hide them in further releases.
+*/
+
+#ifndef UCNV_IMP_H
+#define UCNV_IMP_H
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_CONVERSION
+
+#include "unicode/uloc.h"
+#include "ucnv_bld.h"
+
+/*
+ * Fast check for whether a charset name is "UTF-8".
+ * This does not recognize all of the variations that ucnv_open()
+ * and other functions recognize, but it covers most cases.
+ * @param name const char * charset name
+ * @return
+ */
+#define UCNV_FAST_IS_UTF8(name) \
+ (((name[0]=='U' ? \
+ ( name[1]=='T' && name[2]=='F') : \
+ (name[0]=='u' && name[1]=='t' && name[2]=='f'))) \
+ && (name[3]=='-' ? \
+ (name[4]=='8' && name[5]==0) : \
+ (name[3]=='8' && name[4]==0)))
+
+typedef struct {
+ char cnvName[UCNV_MAX_CONVERTER_NAME_LENGTH];
+ char locale[ULOC_FULLNAME_CAPACITY];
+ uint32_t options;
+} UConverterNamePieces;
+
+U_CFUNC UBool
+ucnv_canCreateConverter(const char *converterName, UErrorCode *err);
+
+/* figures out if we need to go to file to read in the data tables.
+ * @param converterName The name of the converter
+ * @param err The error code
+ * @return the newly created converter
+ */
+U_CAPI UConverter *
+ucnv_createConverter(UConverter *myUConverter, const char *converterName, UErrorCode * err);
+
+/*
+ * Open a purely algorithmic converter, specified by a type constant.
+ * @param myUConverter NULL, or pre-allocated UConverter structure to avoid
+ * a memory allocation
+ * @param type requested converter type
+ * @param locale locale parameter, or ""
+ * @param options converter options bit set (default 0)
+ * @param err ICU error code, not tested for U_FAILURE on input
+ * because this is an internal function
+ * @internal
+ */
+U_CFUNC UConverter *
+ucnv_createAlgorithmicConverter(UConverter *myUConverter,
+ UConverterType type,
+ const char *locale, uint32_t options,
+ UErrorCode *err);
+
+/*
+ * Creates a converter from shared data.
+ * Adopts mySharedConverterData: No matter what happens, the caller must not
+ * unload mySharedConverterData, except via ucnv_close(return value)
+ * if this function is successful.
+ */
+U_CFUNC UConverter *
+ucnv_createConverterFromSharedData(UConverter *myUConverter,
+ UConverterSharedData *mySharedConverterData,
+ UConverterLoadArgs *pArgs,
+ UErrorCode *err);
+
+U_CFUNC UConverter *
+ucnv_createConverterFromPackage(const char *packageName, const char *converterName, UErrorCode *err);
+
+/**
+ * Load a converter but do not create a UConverter object.
+ * Simply return the UConverterSharedData.
+ * Performs alias lookup etc.
+ * The UConverterNamePieces need not be initialized
+ * before calling this function.
+ * The UConverterLoadArgs must be initialized
+ * before calling this function.
+ * If the args are passed in, then the pieces must be passed in too.
+ * In other words, the following combinations are allowed:
+ * - pieces==NULL && args==NULL
+ * - pieces!=NULL && args==NULL
+ * - pieces!=NULL && args!=NULL
+ * @internal
+ */
+U_CFUNC UConverterSharedData *
+ucnv_loadSharedData(const char *converterName,
+ UConverterNamePieces *pieces,
+ UConverterLoadArgs *pArgs,
+ UErrorCode * err);
+
+/**
+ * This may unload the shared data in a thread safe manner.
+ * This will only unload the data if no other converters are sharing it.
+ */
+U_CFUNC void
+ucnv_unloadSharedDataIfReady(UConverterSharedData *sharedData);
+
+/**
+ * This is a thread safe way to increment the reference count.
+ */
+U_CFUNC void
+ucnv_incrementRefCount(UConverterSharedData *sharedData);
+
+/**
+ * These are the default error handling callbacks for the charset conversion framework.
+ * For performance reasons, they are only called to handle an error (not normally called for a reset or close).
+ */
+#define UCNV_TO_U_DEFAULT_CALLBACK ((UConverterToUCallback) UCNV_TO_U_CALLBACK_SUBSTITUTE)
+#define UCNV_FROM_U_DEFAULT_CALLBACK ((UConverterFromUCallback) UCNV_FROM_U_CALLBACK_SUBSTITUTE)
+
+#endif
+
+#endif /* _UCNV_IMP */