Apply ICU patches for ICU tickets 6175 (ISO-2022 and ...

third_party/icu38/source/common/ucnv_ext.h

 /*
 ******************************************************************************
 *
 *   Copyright (C) 2003-2007, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
 *   file name:  ucnv_ext.h
 *   encoding:   US-ASCII
 *   tab size:   8 (not used)
@@ skipping 364 matching lines @@
 U_CFUNC int32_t
 ucnv_extSimpleMatchFromU(const int32_t *cx,
                          UChar32 cp, uint32_t *pValue,
                          UBool useFallback);
 
 U_CFUNC void
 ucnv_extContinueMatchFromU(UConverter *cnv,
                            UConverterFromUnicodeArgs *pArgs, int32_t srcIndex,
                            UErrorCode *pErrorCode);
 
+/*
+ * Add code points and strings to the set according to the extension mappings.
+ * Limitation on the UConverterSetFilter:
+ * The filters currently assume that they are used with 1:1 mappings.
+ * They only apply to single input code points, and then they pass through
+ * only mappings with single-charset-code results.
+ * For example, the Shift-JIS filter only works for 2-byte results and tests
+ * that those 2 bytes are in the JIS X 0208 range of Shift-JIS.
+ */
 U_CFUNC void
 ucnv_extGetUnicodeSet(const UConverterSharedData *sharedData,
                       const USetAdder *sa,
                       UConverterUnicodeSet which,
+                      UConverterSetFilter filter,
                       UErrorCode *pErrorCode);
 
 /* toUnicode helpers -------------------------------------------------------- */
 
 #define UCNV_EXT_TO_U_BYTE_SHIFT 24
 #define UCNV_EXT_TO_U_VALUE_MASK 0xffffff
 #define UCNV_EXT_TO_U_MIN_CODE_POINT 0x1f0000
 #define UCNV_EXT_TO_U_MAX_CODE_POINT 0x2fffff
 #define UCNV_EXT_TO_U_ROUNDTRIP_FLAG ((uint32_t)1<<23)
 #define UCNV_EXT_TO_U_INDEX_MASK 0x3ffff
@@ skipping 55 matching lines @@
 
 /* get length; masks away all other bits */
 #define UCNV_EXT_FROM_U_GET_LENGTH(value) (int32_t)(((value)>>UCNV_EXT_FROM_U_LENGTH_SHIFT)&UCNV_EXT_MAX_BYTES)
 
 /* get bytes or bytes index */
 #define UCNV_EXT_FROM_U_GET_DATA(value) ((value)&UCNV_EXT_FROM_U_DATA_MASK)
 
 #endif
 
 #endif