Restoring authorship annotation for <mcheshkov@yandex-team.ru>. Commit 1 of 2.

1 files changed, 584 insertions, 584 deletions

diff --git a/contrib/libs/icu/common/ucasemap.cpp b/contrib/libs/icu/common/ucasemap.cpp
index ed72bda828..d78702cd6f 100644
--- a/contrib/libs/icu/common/ucasemap.cpp
+++ b/contrib/libs/icu/common/ucasemap.cpp
@@ -1,4 +1,4 @@
-// © 2016 and later: Unicode, Inc. and others.
+// © 2016 and later: Unicode, Inc. and others. 
 // License & terms of use: http://www.unicode.org/copyright.html
 /*
 *******************************************************************************
@@ -8,7 +8,7 @@
 *
 *******************************************************************************
 *   file name:  ucasemap.cpp
-*   encoding:   UTF-8
+*   encoding:   UTF-8 
 *   tab size:   8 (not used)
 *   indentation:4
 *
@@ -20,11 +20,11 @@
 
 #include "unicode/utypes.h"
 #include "unicode/brkiter.h"
-#include "unicode/bytestream.h"
-#include "unicode/casemap.h"
-#include "unicode/edits.h"
-#include "unicode/stringoptions.h"
-#include "unicode/stringpiece.h"
+#include "unicode/bytestream.h" 
+#include "unicode/casemap.h" 
+#include "unicode/edits.h" 
+#include "unicode/stringoptions.h" 
+#include "unicode/stringpiece.h" 
 #include "unicode/ubrk.h"
 #include "unicode/uloc.h"
 #include "unicode/ustring.h"
@@ -35,43 +35,43 @@
 #include "unicode/utf.h"
 #include "unicode/utf8.h"
 #include "unicode/utf16.h"
-#include "bytesinkutil.h"
+#include "bytesinkutil.h" 
 #include "cmemory.h"
 #include "cstring.h"
-#include "uassert.h"
+#include "uassert.h" 
 #include "ucase.h"
-#include "ucasemap_imp.h"
+#include "ucasemap_imp.h" 
 #include "ustr_imp.h"
 
 U_NAMESPACE_USE
 
 /* UCaseMap service object -------------------------------------------------- */
 
-UCaseMap::UCaseMap(const char *localeID, uint32_t opts, UErrorCode *pErrorCode) :
-#if !UCONFIG_NO_BREAK_ITERATION
-        iter(NULL),
-#endif
-        caseLocale(UCASE_LOC_UNKNOWN), options(opts) {
-    ucasemap_setLocale(this, localeID, pErrorCode);
-}
-
-UCaseMap::~UCaseMap() {
-#if !UCONFIG_NO_BREAK_ITERATION
-    delete iter;
-#endif
-}
-
+UCaseMap::UCaseMap(const char *localeID, uint32_t opts, UErrorCode *pErrorCode) : 
+#if !UCONFIG_NO_BREAK_ITERATION 
+        iter(NULL), 
+#endif 
+        caseLocale(UCASE_LOC_UNKNOWN), options(opts) { 
+    ucasemap_setLocale(this, localeID, pErrorCode); 
+} 
+ 
+UCaseMap::~UCaseMap() { 
+#if !UCONFIG_NO_BREAK_ITERATION 
+    delete iter; 
+#endif 
+} 
+ 
 U_CAPI UCaseMap * U_EXPORT2
 ucasemap_open(const char *locale, uint32_t options, UErrorCode *pErrorCode) {
     if(U_FAILURE(*pErrorCode)) {
         return NULL;
     }
-    UCaseMap *csm = new UCaseMap(locale, options, pErrorCode);
+    UCaseMap *csm = new UCaseMap(locale, options, pErrorCode); 
     if(csm==NULL) {
-        *pErrorCode = U_MEMORY_ALLOCATION_ERROR;
+        *pErrorCode = U_MEMORY_ALLOCATION_ERROR; 
         return NULL;
-    } else if (U_FAILURE(*pErrorCode)) {
-        delete csm;
+    } else if (U_FAILURE(*pErrorCode)) { 
+        delete csm; 
         return NULL;
     }
     return csm;
@@ -79,7 +79,7 @@ ucasemap_open(const char *locale, uint32_t options, UErrorCode *pErrorCode) {
 
 U_CAPI void U_EXPORT2
 ucasemap_close(UCaseMap *csm) {
-    delete csm;
+    delete csm; 
 }
 
 U_CAPI const char * U_EXPORT2
@@ -97,13 +97,13 @@ ucasemap_setLocale(UCaseMap *csm, const char *locale, UErrorCode *pErrorCode) {
     if(U_FAILURE(*pErrorCode)) {
         return;
     }
-    if (locale != NULL && *locale == 0) {
-        csm->locale[0] = 0;
-        csm->caseLocale = UCASE_LOC_ROOT;
-        return;
-    }
+    if (locale != NULL && *locale == 0) { 
+        csm->locale[0] = 0; 
+        csm->caseLocale = UCASE_LOC_ROOT; 
+        return; 
+    } 
 
-    int32_t length=uloc_getName(locale, csm->locale, (int32_t)sizeof(csm->locale), pErrorCode);
+    int32_t length=uloc_getName(locale, csm->locale, (int32_t)sizeof(csm->locale), pErrorCode); 
     if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR || length==sizeof(csm->locale)) {
         *pErrorCode=U_ZERO_ERROR;
         /* we only really need the language code for case mappings */
@@ -113,59 +113,59 @@ ucasemap_setLocale(UCaseMap *csm, const char *locale, UErrorCode *pErrorCode) {
         *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
     }
     if(U_SUCCESS(*pErrorCode)) {
-        csm->caseLocale=UCASE_LOC_UNKNOWN;
-        csm->caseLocale = ucase_getCaseLocale(csm->locale);
+        csm->caseLocale=UCASE_LOC_UNKNOWN; 
+        csm->caseLocale = ucase_getCaseLocale(csm->locale); 
     } else {
         csm->locale[0]=0;
-        csm->caseLocale = UCASE_LOC_ROOT;
+        csm->caseLocale = UCASE_LOC_ROOT; 
     }
 }
 
 U_CAPI void U_EXPORT2
-ucasemap_setOptions(UCaseMap *csm, uint32_t options, UErrorCode *pErrorCode) {
-    if(U_FAILURE(*pErrorCode)) {
-        return;
-    }
+ucasemap_setOptions(UCaseMap *csm, uint32_t options, UErrorCode *pErrorCode) { 
+    if(U_FAILURE(*pErrorCode)) { 
+        return; 
+    } 
     csm->options=options;
 }
 
 /* UTF-8 string case mappings ----------------------------------------------- */
 
-/* TODO(markus): Move to a new, separate utf8case.cpp file. */
-
-namespace {
+/* TODO(markus): Move to a new, separate utf8case.cpp file. */ 
 
+namespace { 
+ 
 /* append a full case mapping result, see UCASE_MAX_STRING_LENGTH */
-inline UBool
-appendResult(int32_t cpLength, int32_t result, const UChar *s,
-             ByteSink &sink, uint32_t options, icu::Edits *edits, UErrorCode &errorCode) {
-    U_ASSERT(U_SUCCESS(errorCode));
+inline UBool 
+appendResult(int32_t cpLength, int32_t result, const UChar *s, 
+             ByteSink &sink, uint32_t options, icu::Edits *edits, UErrorCode &errorCode) { 
+    U_ASSERT(U_SUCCESS(errorCode)); 
 
     /* decode the result */
     if(result<0) {
         /* (not) original code point */
-        if(edits!=NULL) {
-            edits->addUnchanged(cpLength);
-        }
-        if((options & U_OMIT_UNCHANGED_TEXT) == 0) {
-            ByteSinkUtil::appendCodePoint(cpLength, ~result, sink);
+        if(edits!=NULL) { 
+            edits->addUnchanged(cpLength); 
         }
+        if((options & U_OMIT_UNCHANGED_TEXT) == 0) { 
+            ByteSinkUtil::appendCodePoint(cpLength, ~result, sink); 
+        } 
     } else {
-        if(result<=UCASE_MAX_STRING_LENGTH) {
-            // string: "result" is the UTF-16 length
-            return ByteSinkUtil::appendChange(cpLength, s, result, sink, edits, errorCode);
+        if(result<=UCASE_MAX_STRING_LENGTH) { 
+            // string: "result" is the UTF-16 length 
+            return ByteSinkUtil::appendChange(cpLength, s, result, sink, edits, errorCode); 
         } else {
-            ByteSinkUtil::appendCodePoint(cpLength, result, sink, edits);
+            ByteSinkUtil::appendCodePoint(cpLength, result, sink, edits); 
         }
     }
-    return TRUE;
+    return TRUE; 
 }
 
-// See unicode/utf8.h U8_APPEND_UNSAFE().
-inline uint8_t getTwoByteLead(UChar32 c) { return (uint8_t)((c >> 6) | 0xc0); }
-inline uint8_t getTwoByteTrail(UChar32 c) { return (uint8_t)((c & 0x3f) | 0x80); }
+// See unicode/utf8.h U8_APPEND_UNSAFE(). 
+inline uint8_t getTwoByteLead(UChar32 c) { return (uint8_t)((c >> 6) | 0xc0); } 
+inline uint8_t getTwoByteTrail(UChar32 c) { return (uint8_t)((c & 0x3f) | 0x80); } 
 
-UChar32 U_CALLCONV
+UChar32 U_CALLCONV 
 utf8_caseContextIterator(void *context, int8_t dir) {
     UCaseContext *csc=(UCaseContext *)context;
     UChar32 c;
@@ -197,290 +197,290 @@ utf8_caseContextIterator(void *context, int8_t dir) {
     return U_SENTINEL;
 }
 
-/**
- * caseLocale >= 0: Lowercases [srcStart..srcLimit[ but takes context [0..srcLength[ into account.
- * caseLocale < 0: Case-folds [srcStart..srcLimit[.
+/** 
+ * caseLocale >= 0: Lowercases [srcStart..srcLimit[ but takes context [0..srcLength[ into account. 
+ * caseLocale < 0: Case-folds [srcStart..srcLimit[. 
  */
-void toLower(int32_t caseLocale, uint32_t options,
-             const uint8_t *src, UCaseContext *csc, int32_t srcStart, int32_t srcLimit,
-             icu::ByteSink &sink, icu::Edits *edits, UErrorCode &errorCode) {
-    const int8_t *latinToLower;
-    if (caseLocale == UCASE_LOC_ROOT ||
-            (caseLocale >= 0 ?
-                !(caseLocale == UCASE_LOC_TURKISH || caseLocale == UCASE_LOC_LITHUANIAN) :
-                (options & _FOLD_CASE_OPTIONS_MASK) == U_FOLD_CASE_DEFAULT)) {
-        latinToLower = LatinCase::TO_LOWER_NORMAL;
-    } else {
-        latinToLower = LatinCase::TO_LOWER_TR_LT;
-    }
-    const UTrie2 *trie = ucase_getTrie();
-    int32_t prev = srcStart;
-    int32_t srcIndex = srcStart;
-    for (;;) {
-        // fast path for simple cases
-        int32_t cpStart;
-        UChar32 c;
-        for (;;) {
-            if (U_FAILURE(errorCode) || srcIndex >= srcLimit) {
-                c = U_SENTINEL;
-                break;
-            }
-            uint8_t lead = src[srcIndex++];
-            if (lead <= 0x7f) {
-                int8_t d = latinToLower[lead];
-                if (d == LatinCase::EXC) {
-                    cpStart = srcIndex - 1;
-                    c = lead;
-                    break;
-                }
-                if (d == 0) { continue; }
-                ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,
-                                              sink, options, edits, errorCode);
-                char ascii = (char)(lead + d);
-                sink.Append(&ascii, 1);
-                if (edits != nullptr) {
-                    edits->addReplace(1, 1);
-                }
-                prev = srcIndex;
-                continue;
-            } else if (lead < 0xe3) {
-                uint8_t t;
-                if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLimit &&
-                        (t = src[srcIndex] - 0x80) <= 0x3f) {
-                    // U+0080..U+017F
-                    ++srcIndex;
-                    c = ((lead - 0xc0) << 6) | t;
-                    int8_t d = latinToLower[c];
-                    if (d == LatinCase::EXC) {
-                        cpStart = srcIndex - 2;
-                        break;
-                    }
-                    if (d == 0) { continue; }
-                    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,
-                                                  sink, options, edits, errorCode);
-                    ByteSinkUtil::appendTwoBytes(c + d, sink);
-                    if (edits != nullptr) {
-                        edits->addReplace(2, 2);
-                    }
-                    prev = srcIndex;
-                    continue;
-                }
-            } else if ((lead <= 0xe9 || lead == 0xeb || lead == 0xec) &&
-                    (srcIndex + 2) <= srcLimit &&
-                    U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {
-                // most of CJK: no case mappings
-                srcIndex += 2;
-                continue;
+void toLower(int32_t caseLocale, uint32_t options, 
+             const uint8_t *src, UCaseContext *csc, int32_t srcStart, int32_t srcLimit, 
+             icu::ByteSink &sink, icu::Edits *edits, UErrorCode &errorCode) { 
+    const int8_t *latinToLower; 
+    if (caseLocale == UCASE_LOC_ROOT || 
+            (caseLocale >= 0 ? 
+                !(caseLocale == UCASE_LOC_TURKISH || caseLocale == UCASE_LOC_LITHUANIAN) : 
+                (options & _FOLD_CASE_OPTIONS_MASK) == U_FOLD_CASE_DEFAULT)) { 
+        latinToLower = LatinCase::TO_LOWER_NORMAL; 
+    } else { 
+        latinToLower = LatinCase::TO_LOWER_TR_LT; 
+    } 
+    const UTrie2 *trie = ucase_getTrie(); 
+    int32_t prev = srcStart; 
+    int32_t srcIndex = srcStart; 
+    for (;;) { 
+        // fast path for simple cases 
+        int32_t cpStart; 
+        UChar32 c; 
+        for (;;) { 
+            if (U_FAILURE(errorCode) || srcIndex >= srcLimit) { 
+                c = U_SENTINEL; 
+                break; 
             }
-            cpStart = --srcIndex;
-            U8_NEXT(src, srcIndex, srcLimit, c);
-            if (c < 0) {
-                // ill-formed UTF-8
-                continue;
-            }
-            uint16_t props = UTRIE2_GET16(trie, c);
-            if (UCASE_HAS_EXCEPTION(props)) { break; }
-            int32_t delta;
-            if (!UCASE_IS_UPPER_OR_TITLE(props) || (delta = UCASE_GET_DELTA(props)) == 0) {
-                continue;
-            }
-            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
-                                          sink, options, edits, errorCode);
-            ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);
-            prev = srcIndex;
-        }
-        if (c < 0) {
-            break;
+            uint8_t lead = src[srcIndex++]; 
+            if (lead <= 0x7f) { 
+                int8_t d = latinToLower[lead]; 
+                if (d == LatinCase::EXC) { 
+                    cpStart = srcIndex - 1; 
+                    c = lead; 
+                    break; 
+                } 
+                if (d == 0) { continue; } 
+                ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev, 
+                                              sink, options, edits, errorCode); 
+                char ascii = (char)(lead + d); 
+                sink.Append(&ascii, 1); 
+                if (edits != nullptr) { 
+                    edits->addReplace(1, 1); 
+                } 
+                prev = srcIndex; 
+                continue; 
+            } else if (lead < 0xe3) { 
+                uint8_t t; 
+                if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLimit && 
+                        (t = src[srcIndex] - 0x80) <= 0x3f) { 
+                    // U+0080..U+017F 
+                    ++srcIndex; 
+                    c = ((lead - 0xc0) << 6) | t; 
+                    int8_t d = latinToLower[c]; 
+                    if (d == LatinCase::EXC) { 
+                        cpStart = srcIndex - 2; 
+                        break; 
+                    } 
+                    if (d == 0) { continue; } 
+                    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev, 
+                                                  sink, options, edits, errorCode); 
+                    ByteSinkUtil::appendTwoBytes(c + d, sink); 
+                    if (edits != nullptr) { 
+                        edits->addReplace(2, 2); 
+                    } 
+                    prev = srcIndex; 
+                    continue; 
+                } 
+            } else if ((lead <= 0xe9 || lead == 0xeb || lead == 0xec) && 
+                    (srcIndex + 2) <= srcLimit && 
+                    U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) { 
+                // most of CJK: no case mappings 
+                srcIndex += 2; 
+                continue; 
+            } 
+            cpStart = --srcIndex; 
+            U8_NEXT(src, srcIndex, srcLimit, c); 
+            if (c < 0) { 
+                // ill-formed UTF-8 
+                continue; 
+            } 
+            uint16_t props = UTRIE2_GET16(trie, c); 
+            if (UCASE_HAS_EXCEPTION(props)) { break; } 
+            int32_t delta; 
+            if (!UCASE_IS_UPPER_OR_TITLE(props) || (delta = UCASE_GET_DELTA(props)) == 0) { 
+                continue; 
+            } 
+            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev, 
+                                          sink, options, edits, errorCode); 
+            ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits); 
+            prev = srcIndex; 
         }
-        // slow path
-        const UChar *s;
-        if (caseLocale >= 0) {
-            csc->cpStart = cpStart;
-            csc->cpLimit = srcIndex;
-            c = ucase_toFullLower(c, utf8_caseContextIterator, csc, &s, caseLocale);
+        if (c < 0) { 
+            break; 
+        } 
+        // slow path 
+        const UChar *s; 
+        if (caseLocale >= 0) { 
+            csc->cpStart = cpStart; 
+            csc->cpLimit = srcIndex; 
+            c = ucase_toFullLower(c, utf8_caseContextIterator, csc, &s, caseLocale); 
         } else {
-            c = ucase_toFullFolding(c, &s, options);
+            c = ucase_toFullFolding(c, &s, options); 
         }
-        if (c >= 0) {
-            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
-                                          sink, options, edits, errorCode);
-            appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);
-            prev = srcIndex;
-        }
-    }
-    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,
-                                  sink, options, edits, errorCode);
-}
-
-void toUpper(int32_t caseLocale, uint32_t options,
-             const uint8_t *src, UCaseContext *csc, int32_t srcLength,
-             icu::ByteSink &sink, icu::Edits *edits, UErrorCode &errorCode) {
-    const int8_t *latinToUpper;
-    if (caseLocale == UCASE_LOC_TURKISH) {
-        latinToUpper = LatinCase::TO_UPPER_TR;
-    } else {
-        latinToUpper = LatinCase::TO_UPPER_NORMAL;
+        if (c >= 0) { 
+            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev, 
+                                          sink, options, edits, errorCode); 
+            appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode); 
+            prev = srcIndex; 
+        } 
     }
-    const UTrie2 *trie = ucase_getTrie();
-    int32_t prev = 0;
-    int32_t srcIndex = 0;
-    for (;;) {
-        // fast path for simple cases
-        int32_t cpStart;
-        UChar32 c;
-        for (;;) {
-            if (U_FAILURE(errorCode) || srcIndex >= srcLength) {
-                c = U_SENTINEL;
-                break;
-            }
-            uint8_t lead = src[srcIndex++];
-            if (lead <= 0x7f) {
-                int8_t d = latinToUpper[lead];
-                if (d == LatinCase::EXC) {
-                    cpStart = srcIndex - 1;
-                    c = lead;
-                    break;
-                }
-                if (d == 0) { continue; }
-                ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev,
-                                              sink, options, edits, errorCode);
-                char ascii = (char)(lead + d);
-                sink.Append(&ascii, 1);
-                if (edits != nullptr) {
-                    edits->addReplace(1, 1);
-                }
-                prev = srcIndex;
-                continue;
-            } else if (lead < 0xe3) {
-                uint8_t t;
-                if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLength &&
-                        (t = src[srcIndex] - 0x80) <= 0x3f) {
-                    // U+0080..U+017F
-                    ++srcIndex;
-                    c = ((lead - 0xc0) << 6) | t;
-                    int8_t d = latinToUpper[c];
-                    if (d == LatinCase::EXC) {
-                        cpStart = srcIndex - 2;
-                        break;
-                    }
-                    if (d == 0) { continue; }
-                    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev,
-                                                  sink, options, edits, errorCode);
-                    ByteSinkUtil::appendTwoBytes(c + d, sink);
-                    if (edits != nullptr) {
-                        edits->addReplace(2, 2);
-                    }
-                    prev = srcIndex;
-                    continue;
-                }
-            } else if ((lead <= 0xe9 || lead == 0xeb || lead == 0xec) &&
-                    (srcIndex + 2) <= srcLength &&
-                    U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) {
-                // most of CJK: no case mappings
-                srcIndex += 2;
-                continue;
-            }
-            cpStart = --srcIndex;
-            U8_NEXT(src, srcIndex, srcLength, c);
-            if (c < 0) {
-                // ill-formed UTF-8
-                continue;
-            }
-            uint16_t props = UTRIE2_GET16(trie, c);
-            if (UCASE_HAS_EXCEPTION(props)) { break; }
-            int32_t delta;
-            if (UCASE_GET_TYPE(props) != UCASE_LOWER || (delta = UCASE_GET_DELTA(props)) == 0) {
-                continue;
-            }
-            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
-                                          sink, options, edits, errorCode);
-            ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits);
-            prev = srcIndex;
-        }
-        if (c < 0) {
-            break;
-        }
-        // slow path
-        csc->cpStart = cpStart;
-        csc->cpLimit = srcIndex;
-        const UChar *s;
-        c = ucase_toFullUpper(c, utf8_caseContextIterator, csc, &s, caseLocale);
-        if (c >= 0) {
-            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev,
-                                          sink, options, edits, errorCode);
-            appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode);
-            prev = srcIndex;
-        }
+    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev, 
+                                  sink, options, edits, errorCode); 
+} 
+
+void toUpper(int32_t caseLocale, uint32_t options, 
+             const uint8_t *src, UCaseContext *csc, int32_t srcLength, 
+             icu::ByteSink &sink, icu::Edits *edits, UErrorCode &errorCode) { 
+    const int8_t *latinToUpper; 
+    if (caseLocale == UCASE_LOC_TURKISH) { 
+        latinToUpper = LatinCase::TO_UPPER_TR; 
+    } else { 
+        latinToUpper = LatinCase::TO_UPPER_NORMAL; 
     }
-    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev,
-                                  sink, options, edits, errorCode);
+    const UTrie2 *trie = ucase_getTrie(); 
+    int32_t prev = 0; 
+    int32_t srcIndex = 0; 
+    for (;;) { 
+        // fast path for simple cases 
+        int32_t cpStart; 
+        UChar32 c; 
+        for (;;) { 
+            if (U_FAILURE(errorCode) || srcIndex >= srcLength) { 
+                c = U_SENTINEL; 
+                break; 
+            } 
+            uint8_t lead = src[srcIndex++]; 
+            if (lead <= 0x7f) { 
+                int8_t d = latinToUpper[lead]; 
+                if (d == LatinCase::EXC) { 
+                    cpStart = srcIndex - 1; 
+                    c = lead; 
+                    break; 
+                } 
+                if (d == 0) { continue; } 
+                ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 1 - prev, 
+                                              sink, options, edits, errorCode); 
+                char ascii = (char)(lead + d); 
+                sink.Append(&ascii, 1); 
+                if (edits != nullptr) { 
+                    edits->addReplace(1, 1); 
+                } 
+                prev = srcIndex; 
+                continue; 
+            } else if (lead < 0xe3) { 
+                uint8_t t; 
+                if (0xc2 <= lead && lead <= 0xc5 && srcIndex < srcLength && 
+                        (t = src[srcIndex] - 0x80) <= 0x3f) { 
+                    // U+0080..U+017F 
+                    ++srcIndex; 
+                    c = ((lead - 0xc0) << 6) | t; 
+                    int8_t d = latinToUpper[c]; 
+                    if (d == LatinCase::EXC) { 
+                        cpStart = srcIndex - 2; 
+                        break; 
+                    } 
+                    if (d == 0) { continue; } 
+                    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - 2 - prev, 
+                                                  sink, options, edits, errorCode); 
+                    ByteSinkUtil::appendTwoBytes(c + d, sink); 
+                    if (edits != nullptr) { 
+                        edits->addReplace(2, 2); 
+                    } 
+                    prev = srcIndex; 
+                    continue; 
+                } 
+            } else if ((lead <= 0xe9 || lead == 0xeb || lead == 0xec) && 
+                    (srcIndex + 2) <= srcLength && 
+                    U8_IS_TRAIL(src[srcIndex]) && U8_IS_TRAIL(src[srcIndex + 1])) { 
+                // most of CJK: no case mappings 
+                srcIndex += 2; 
+                continue; 
+            } 
+            cpStart = --srcIndex; 
+            U8_NEXT(src, srcIndex, srcLength, c); 
+            if (c < 0) { 
+                // ill-formed UTF-8 
+                continue; 
+            } 
+            uint16_t props = UTRIE2_GET16(trie, c); 
+            if (UCASE_HAS_EXCEPTION(props)) { break; } 
+            int32_t delta; 
+            if (UCASE_GET_TYPE(props) != UCASE_LOWER || (delta = UCASE_GET_DELTA(props)) == 0) { 
+                continue; 
+            } 
+            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev, 
+                                          sink, options, edits, errorCode); 
+            ByteSinkUtil::appendCodePoint(srcIndex - cpStart, c + delta, sink, edits); 
+            prev = srcIndex; 
+        } 
+        if (c < 0) { 
+            break; 
+        } 
+        // slow path 
+        csc->cpStart = cpStart; 
+        csc->cpLimit = srcIndex; 
+        const UChar *s; 
+        c = ucase_toFullUpper(c, utf8_caseContextIterator, csc, &s, caseLocale); 
+        if (c >= 0) { 
+            ByteSinkUtil::appendUnchanged(src + prev, cpStart - prev, 
+                                          sink, options, edits, errorCode); 
+            appendResult(srcIndex - cpStart, c, s, sink, options, edits, errorCode); 
+            prev = srcIndex; 
+        } 
+    } 
+    ByteSinkUtil::appendUnchanged(src + prev, srcIndex - prev, 
+                                  sink, options, edits, errorCode); 
 }
 
-}  // namespace
-
+}  // namespace 
+ 
 #if !UCONFIG_NO_BREAK_ITERATION
 
-U_CFUNC void U_CALLCONV
-ucasemap_internalUTF8ToTitle(
-        int32_t caseLocale, uint32_t options, BreakIterator *iter,
-        const uint8_t *src, int32_t srcLength,
-        ByteSink &sink, icu::Edits *edits,
-        UErrorCode &errorCode) {
-    if (!ustrcase_checkTitleAdjustmentOptions(options, errorCode)) {
-        return;
+U_CFUNC void U_CALLCONV 
+ucasemap_internalUTF8ToTitle( 
+        int32_t caseLocale, uint32_t options, BreakIterator *iter, 
+        const uint8_t *src, int32_t srcLength, 
+        ByteSink &sink, icu::Edits *edits, 
+        UErrorCode &errorCode) { 
+    if (!ustrcase_checkTitleAdjustmentOptions(options, errorCode)) { 
+        return; 
     }
 
     /* set up local variables */
     UCaseContext csc=UCASECONTEXT_INITIALIZER;
     csc.p=(void *)src;
     csc.limit=srcLength;
-    int32_t prev=0;
-    UBool isFirstIndex=TRUE;
+    int32_t prev=0; 
+    UBool isFirstIndex=TRUE; 
 
     /* titlecasing loop */
     while(prev<srcLength) {
         /* find next index where to titlecase */
-        int32_t index;
+        int32_t index; 
         if(isFirstIndex) {
             isFirstIndex=FALSE;
-            index=iter->first();
+            index=iter->first(); 
         } else {
-            index=iter->next();
+            index=iter->next(); 
         }
-        if(index==UBRK_DONE || index>srcLength) {
-            index=srcLength;
+        if(index==UBRK_DONE || index>srcLength) { 
+            index=srcLength; 
         }
 
         /*
-         * Segment [prev..index[ into 3 parts:
-         * a) skipped characters (copy as-is) [prev..titleStart[
-         * b) first letter (titlecase)              [titleStart..titleLimit[
+         * Segment [prev..index[ into 3 parts: 
+         * a) skipped characters (copy as-is) [prev..titleStart[ 
+         * b) first letter (titlecase)              [titleStart..titleLimit[ 
          * c) subsequent characters (lowercase)                 [titleLimit..index[
          */
-        if(prev<index) {
-            /* find and copy skipped characters [prev..titleStart[ */
-            int32_t titleStart=prev;
-            int32_t titleLimit=prev;
-            UChar32 c;
-            U8_NEXT(src, titleLimit, index, c);
-            if ((options&U_TITLECASE_NO_BREAK_ADJUSTMENT)==0) {
-                // Adjust the titlecasing index to the next cased character,
-                // or to the next letter/number/symbol/private use.
-                // Stop with titleStart<titleLimit<=index
-                // if there is a character to be titlecased,
-                // or else stop with titleStart==titleLimit==index.
-                UBool toCased = (options&U_TITLECASE_ADJUST_TO_CASED) != 0;
-                while (toCased ? UCASE_NONE==ucase_getType(c) : !ustrcase_isLNS(c)) {
+        if(prev<index) { 
+            /* find and copy skipped characters [prev..titleStart[ */ 
+            int32_t titleStart=prev; 
+            int32_t titleLimit=prev; 
+            UChar32 c; 
+            U8_NEXT(src, titleLimit, index, c); 
+            if ((options&U_TITLECASE_NO_BREAK_ADJUSTMENT)==0) { 
+                // Adjust the titlecasing index to the next cased character, 
+                // or to the next letter/number/symbol/private use. 
+                // Stop with titleStart<titleLimit<=index 
+                // if there is a character to be titlecased, 
+                // or else stop with titleStart==titleLimit==index. 
+                UBool toCased = (options&U_TITLECASE_ADJUST_TO_CASED) != 0; 
+                while (toCased ? UCASE_NONE==ucase_getType(c) : !ustrcase_isLNS(c)) { 
                     titleStart=titleLimit;
-                    if(titleLimit==index) {
+                    if(titleLimit==index) { 
                         break;
                     }
-                    U8_NEXT(src, titleLimit, index, c);
-                }
-                if (prev < titleStart) {
-                    if (!ByteSinkUtil::appendUnchanged(src+prev, titleStart-prev,
-                                                       sink, options, edits, errorCode)) {
-                        return;
+                    U8_NEXT(src, titleLimit, index, c); 
+                } 
+                if (prev < titleStart) { 
+                    if (!ByteSinkUtil::appendUnchanged(src+prev, titleStart-prev, 
+                                                       sink, options, edits, errorCode)) { 
+                        return; 
                     }
                 }
             }
@@ -490,58 +490,58 @@ ucasemap_internalUTF8ToTitle(
                 if(c>=0) {
                     csc.cpStart=titleStart;
                     csc.cpLimit=titleLimit;
-                    const UChar *s;
-                    c=ucase_toFullTitle(c, utf8_caseContextIterator, &csc, &s, caseLocale);
-                    if (!appendResult(titleLimit-titleStart, c, s, sink, options, edits, errorCode)) {
-                        return;
-                    }
+                    const UChar *s; 
+                    c=ucase_toFullTitle(c, utf8_caseContextIterator, &csc, &s, caseLocale); 
+                    if (!appendResult(titleLimit-titleStart, c, s, sink, options, edits, errorCode)) { 
+                        return; 
+                    } 
                 } else {
                     // Malformed UTF-8.
-                    if (!ByteSinkUtil::appendUnchanged(src+titleStart, titleLimit-titleStart,
-                                                       sink, options, edits, errorCode)) {
-                        return;
-                    }
+                    if (!ByteSinkUtil::appendUnchanged(src+titleStart, titleLimit-titleStart, 
+                                                       sink, options, edits, errorCode)) { 
+                        return; 
+                    } 
                 }
 
                 /* Special case Dutch IJ titlecasing */
-                if (titleStart+1 < index &&
-                        caseLocale == UCASE_LOC_DUTCH &&
-                        (src[titleStart] == 0x0049 || src[titleStart] == 0x0069)) {
-                    if (src[titleStart+1] == 0x006A) {
-                        ByteSinkUtil::appendCodePoint(1, 0x004A, sink, edits);
-                        titleLimit++;
-                    } else if (src[titleStart+1] == 0x004A) {
-                        // Keep the capital J from getting lowercased.
-                        if (!ByteSinkUtil::appendUnchanged(src+titleStart+1, 1,
-                                                           sink, options, edits, errorCode)) {
-                            return;
-                        }
-                        titleLimit++;
-                    }
+                if (titleStart+1 < index && 
+                        caseLocale == UCASE_LOC_DUTCH && 
+                        (src[titleStart] == 0x0049 || src[titleStart] == 0x0069)) { 
+                    if (src[titleStart+1] == 0x006A) { 
+                        ByteSinkUtil::appendCodePoint(1, 0x004A, sink, edits); 
+                        titleLimit++; 
+                    } else if (src[titleStart+1] == 0x004A) { 
+                        // Keep the capital J from getting lowercased. 
+                        if (!ByteSinkUtil::appendUnchanged(src+titleStart+1, 1, 
+                                                           sink, options, edits, errorCode)) { 
+                            return; 
+                        } 
+                        titleLimit++; 
+                    } 
                 }
-
+ 
                 /* lowercase [titleLimit..index[ */
-                if(titleLimit<index) {
-                    if((options&U_TITLECASE_NO_LOWERCASE)==0) {
+                if(titleLimit<index) { 
+                    if((options&U_TITLECASE_NO_LOWERCASE)==0) { 
                         /* Normal operation: Lowercase the rest of the word. */
-                        toLower(caseLocale, options,
-                                src, &csc, titleLimit, index,
-                                sink, edits, errorCode);
-                        if(U_FAILURE(errorCode)) {
-                            return;
-                        }
+                        toLower(caseLocale, options, 
+                                src, &csc, titleLimit, index, 
+                                sink, edits, errorCode); 
+                        if(U_FAILURE(errorCode)) { 
+                            return; 
+                        } 
                     } else {
                         /* Optionally just copy the rest of the word unchanged. */
-                        if (!ByteSinkUtil::appendUnchanged(src+titleLimit, index-titleLimit,
-                                                           sink, options, edits, errorCode)) {
-                            return;
+                        if (!ByteSinkUtil::appendUnchanged(src+titleLimit, index-titleLimit, 
+                                                           sink, options, edits, errorCode)) { 
+                            return; 
                         }
                     }
                 }
             }
         }
 
-        prev=index;
+        prev=index; 
     }
 }
 
@@ -550,11 +550,11 @@ ucasemap_internalUTF8ToTitle(
 U_NAMESPACE_BEGIN
 namespace GreekUpper {
 
-UBool isFollowedByCasedLetter(const uint8_t *s, int32_t i, int32_t length) {
+UBool isFollowedByCasedLetter(const uint8_t *s, int32_t i, int32_t length) { 
     while (i < length) {
         UChar32 c;
         U8_NEXT(s, i, length, c);
-        int32_t type = ucase_getTypeOrIgnorable(c);
+        int32_t type = ucase_getTypeOrIgnorable(c); 
         if ((type & UCASE_IGNORABLE) != 0) {
             // Case-ignorable, continue with the loop.
         } else if (type != UCASE_NONE) {
@@ -567,17 +567,17 @@ UBool isFollowedByCasedLetter(const uint8_t *s, int32_t i, int32_t length) {
 }
 
 // Keep this consistent with the UTF-16 version in ustrcase.cpp and the Java version in CaseMap.java.
-void toUpper(uint32_t options,
-             const uint8_t *src, int32_t srcLength,
-             ByteSink &sink, Edits *edits,
-             UErrorCode &errorCode) {
+void toUpper(uint32_t options, 
+             const uint8_t *src, int32_t srcLength, 
+             ByteSink &sink, Edits *edits, 
+             UErrorCode &errorCode) { 
     uint32_t state = 0;
     for (int32_t i = 0; i < srcLength;) {
         int32_t nextIndex = i;
         UChar32 c;
         U8_NEXT(src, nextIndex, srcLength, c);
         uint32_t nextState = 0;
-        int32_t type = ucase_getTypeOrIgnorable(c);
+        int32_t type = ucase_getTypeOrIgnorable(c); 
         if ((type & UCASE_IGNORABLE) != 0) {
             // c is case-ignorable
             nextState |= (state & AFTER_CASED);
@@ -627,7 +627,7 @@ void toUpper(uint32_t options,
                     (data & HAS_ACCENT) != 0 &&
                     numYpogegrammeni == 0 &&
                     (state & AFTER_CASED) == 0 &&
-                    !isFollowedByCasedLetter(src, nextIndex, srcLength)) {
+                    !isFollowedByCasedLetter(src, nextIndex, srcLength)) { 
                 // Keep disjunctive "or" with (only) a tonos.
                 // We use the same "word boundary" conditions as for the Final_Sigma test.
                 if (i == nextIndex) {
@@ -645,69 +645,69 @@ void toUpper(uint32_t options,
                     data &= ~HAS_EITHER_DIALYTIKA;
                 }
             }
-
-            UBool change;
-            if (edits == nullptr && (options & U_OMIT_UNCHANGED_TEXT) == 0) {
-                change = TRUE;  // common, simple usage
-            } else {
-                // Find out first whether we are changing the text.
-                U_ASSERT(0x370 <= upper && upper <= 0x3ff);  // 2-byte UTF-8, main Greek block
-                change = (i + 2) > nextIndex ||
-                        src[i] != getTwoByteLead(upper) || src[i + 1] != getTwoByteTrail(upper) ||
-                        numYpogegrammeni > 0;
-                int32_t i2 = i + 2;
-                if ((data & HAS_EITHER_DIALYTIKA) != 0) {
-                    change |= (i2 + 2) > nextIndex ||
-                            src[i2] != (uint8_t)u8"\u0308"[0] ||
-                            src[i2 + 1] != (uint8_t)u8"\u0308"[1];
-                    i2 += 2;
-                }
-                if (addTonos) {
-                    change |= (i2 + 2) > nextIndex ||
-                            src[i2] != (uint8_t)u8"\u0301"[0] ||
-                            src[i2 + 1] != (uint8_t)u8"\u0301"[1];
-                    i2 += 2;
-                }
-                int32_t oldLength = nextIndex - i;
-                int32_t newLength = (i2 - i) + numYpogegrammeni * 2;  // 2 bytes per U+0399
-                change |= oldLength != newLength;
-                if (change) {
-                    if (edits != NULL) {
-                        edits->addReplace(oldLength, newLength);
-                    }
-                } else {
-                    if (edits != NULL) {
-                        edits->addUnchanged(oldLength);
-                    }
-                    // Write unchanged text?
-                    change = (options & U_OMIT_UNCHANGED_TEXT) == 0;
-                }
+ 
+            UBool change; 
+            if (edits == nullptr && (options & U_OMIT_UNCHANGED_TEXT) == 0) { 
+                change = TRUE;  // common, simple usage 
+            } else { 
+                // Find out first whether we are changing the text. 
+                U_ASSERT(0x370 <= upper && upper <= 0x3ff);  // 2-byte UTF-8, main Greek block 
+                change = (i + 2) > nextIndex || 
+                        src[i] != getTwoByteLead(upper) || src[i + 1] != getTwoByteTrail(upper) || 
+                        numYpogegrammeni > 0; 
+                int32_t i2 = i + 2; 
+                if ((data & HAS_EITHER_DIALYTIKA) != 0) { 
+                    change |= (i2 + 2) > nextIndex || 
+                            src[i2] != (uint8_t)u8"\u0308"[0] || 
+                            src[i2 + 1] != (uint8_t)u8"\u0308"[1]; 
+                    i2 += 2; 
+                } 
+                if (addTonos) { 
+                    change |= (i2 + 2) > nextIndex || 
+                            src[i2] != (uint8_t)u8"\u0301"[0] || 
+                            src[i2 + 1] != (uint8_t)u8"\u0301"[1]; 
+                    i2 += 2; 
+                } 
+                int32_t oldLength = nextIndex - i; 
+                int32_t newLength = (i2 - i) + numYpogegrammeni * 2;  // 2 bytes per U+0399 
+                change |= oldLength != newLength; 
+                if (change) { 
+                    if (edits != NULL) { 
+                        edits->addReplace(oldLength, newLength); 
+                    } 
+                } else { 
+                    if (edits != NULL) { 
+                        edits->addUnchanged(oldLength); 
+                    } 
+                    // Write unchanged text? 
+                    change = (options & U_OMIT_UNCHANGED_TEXT) == 0; 
+                } 
             }
-
-            if (change) {
-                ByteSinkUtil::appendTwoBytes(upper, sink);
-                if ((data & HAS_EITHER_DIALYTIKA) != 0) {
-                    sink.AppendU8(u8"\u0308", 2);  // restore or add a dialytika
-                }
-                if (addTonos) {
-                    sink.AppendU8(u8"\u0301", 2);
-                }
-                while (numYpogegrammeni > 0) {
-                    sink.AppendU8(u8"\u0399", 2);
-                    --numYpogegrammeni;
-                }
+ 
+            if (change) { 
+                ByteSinkUtil::appendTwoBytes(upper, sink); 
+                if ((data & HAS_EITHER_DIALYTIKA) != 0) { 
+                    sink.AppendU8(u8"\u0308", 2);  // restore or add a dialytika 
+                } 
+                if (addTonos) { 
+                    sink.AppendU8(u8"\u0301", 2); 
+                } 
+                while (numYpogegrammeni > 0) { 
+                    sink.AppendU8(u8"\u0399", 2); 
+                    --numYpogegrammeni; 
+                } 
             }
         } else if(c>=0) {
             const UChar *s;
-            c=ucase_toFullUpper(c, NULL, NULL, &s, UCASE_LOC_GREEK);
-            if (!appendResult(nextIndex - i, c, s, sink, options, edits, errorCode)) {
-                return;
+            c=ucase_toFullUpper(c, NULL, NULL, &s, UCASE_LOC_GREEK); 
+            if (!appendResult(nextIndex - i, c, s, sink, options, edits, errorCode)) { 
+                return; 
             }
         } else {
             // Malformed UTF-8.
-            if (!ByteSinkUtil::appendUnchanged(src+i, nextIndex-i,
-                                               sink, options, edits, errorCode)) {
-                return;
+            if (!ByteSinkUtil::appendUnchanged(src+i, nextIndex-i, 
+                                               sink, options, edits, errorCode)) { 
+                return; 
             }
         }
         i = nextIndex;
@@ -718,98 +718,98 @@ void toUpper(uint32_t options,
 }  // namespace GreekUpper
 U_NAMESPACE_END
 
-static void U_CALLCONV
-ucasemap_internalUTF8ToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
+static void U_CALLCONV 
+ucasemap_internalUTF8ToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED 
                              const uint8_t *src, int32_t srcLength,
-                             icu::ByteSink &sink, icu::Edits *edits,
-                             UErrorCode &errorCode) {
+                             icu::ByteSink &sink, icu::Edits *edits, 
+                             UErrorCode &errorCode) { 
     UCaseContext csc=UCASECONTEXT_INITIALIZER;
     csc.p=(void *)src;
     csc.limit=srcLength;
-    toLower(
-        caseLocale, options,
+    toLower( 
+        caseLocale, options, 
         src, &csc, 0, srcLength,
-        sink, edits, errorCode);
+        sink, edits, errorCode); 
 }
 
-static void U_CALLCONV
-ucasemap_internalUTF8ToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
+static void U_CALLCONV 
+ucasemap_internalUTF8ToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED 
                              const uint8_t *src, int32_t srcLength,
-                             icu::ByteSink &sink, icu::Edits *edits,
-                             UErrorCode &errorCode) {
-    if (caseLocale == UCASE_LOC_GREEK) {
-        GreekUpper::toUpper(options, src, srcLength, sink, edits, errorCode);
-    } else {
-        UCaseContext csc=UCASECONTEXT_INITIALIZER;
-        csc.p=(void *)src;
-        csc.limit=srcLength;
-        toUpper(
-            caseLocale, options,
-            src, &csc, srcLength,
-            sink, edits, errorCode);
+                             icu::ByteSink &sink, icu::Edits *edits, 
+                             UErrorCode &errorCode) { 
+    if (caseLocale == UCASE_LOC_GREEK) { 
+        GreekUpper::toUpper(options, src, srcLength, sink, edits, errorCode); 
+    } else { 
+        UCaseContext csc=UCASECONTEXT_INITIALIZER; 
+        csc.p=(void *)src; 
+        csc.limit=srcLength; 
+        toUpper( 
+            caseLocale, options, 
+            src, &csc, srcLength, 
+            sink, edits, errorCode); 
     }
 }
 
-static void U_CALLCONV
-ucasemap_internalUTF8Fold(int32_t /* caseLocale */, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED
-                          const uint8_t *src, int32_t srcLength,
-                          icu::ByteSink &sink, icu::Edits *edits,
-                          UErrorCode &errorCode) {
-    toLower(
-        -1, options,
-        src, nullptr, 0, srcLength,
-        sink, edits, errorCode);
-}
-
-void
-ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                 const char *src, int32_t srcLength,
-                 UTF8CaseMapper *stringCaseMapper,
-                 icu::ByteSink &sink, icu::Edits *edits,
-                 UErrorCode &errorCode) {
-    /* check argument values */
-    if (U_FAILURE(errorCode)) {
-        return;
-    }
-    if ((src == nullptr && srcLength != 0) || srcLength < -1) {
-        errorCode = U_ILLEGAL_ARGUMENT_ERROR;
-        return;
-    }
-
-    // Get the string length.
-    if (srcLength == -1) {
-        srcLength = (int32_t)uprv_strlen((const char *)src);
+static void U_CALLCONV 
+ucasemap_internalUTF8Fold(int32_t /* caseLocale */, uint32_t options, UCASEMAP_BREAK_ITERATOR_UNUSED 
+                          const uint8_t *src, int32_t srcLength, 
+                          icu::ByteSink &sink, icu::Edits *edits, 
+                          UErrorCode &errorCode) { 
+    toLower( 
+        -1, options, 
+        src, nullptr, 0, srcLength, 
+        sink, edits, errorCode); 
+} 
+
+void 
+ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 
+                 const char *src, int32_t srcLength, 
+                 UTF8CaseMapper *stringCaseMapper, 
+                 icu::ByteSink &sink, icu::Edits *edits, 
+                 UErrorCode &errorCode) { 
+    /* check argument values */ 
+    if (U_FAILURE(errorCode)) { 
+        return; 
+    } 
+    if ((src == nullptr && srcLength != 0) || srcLength < -1) { 
+        errorCode = U_ILLEGAL_ARGUMENT_ERROR; 
+        return; 
+    } 
+
+    // Get the string length. 
+    if (srcLength == -1) { 
+        srcLength = (int32_t)uprv_strlen((const char *)src); 
     }
 
-    if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) {
-        edits->reset();
-    }
-    stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
-                     (const uint8_t *)src, srcLength, sink, edits, errorCode);
-    sink.Flush();
-    if (U_SUCCESS(errorCode)) {
-        if (edits != nullptr) {
-            edits->copyErrorTo(errorCode);
-        }
+    if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) { 
+        edits->reset(); 
     }
+    stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR 
+                     (const uint8_t *)src, srcLength, sink, edits, errorCode); 
+    sink.Flush(); 
+    if (U_SUCCESS(errorCode)) { 
+        if (edits != nullptr) { 
+            edits->copyErrorTo(errorCode); 
+        } 
+    } 
 }
 
-int32_t
-ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                 char *dest, int32_t destCapacity,
-                 const char *src, int32_t srcLength,
+int32_t 
+ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 
+                 char *dest, int32_t destCapacity, 
+                 const char *src, int32_t srcLength, 
                  UTF8CaseMapper *stringCaseMapper,
-                 icu::Edits *edits,
-                 UErrorCode &errorCode) {
+                 icu::Edits *edits, 
+                 UErrorCode &errorCode) { 
     /* check argument values */
-    if(U_FAILURE(errorCode)) {
+    if(U_FAILURE(errorCode)) { 
         return 0;
     }
     if( destCapacity<0 ||
         (dest==NULL && destCapacity>0) ||
-        (src==NULL && srcLength!=0) || srcLength<-1
+        (src==NULL && srcLength!=0) || srcLength<-1 
     ) {
-        errorCode=U_ILLEGAL_ARGUMENT_ERROR;
+        errorCode=U_ILLEGAL_ARGUMENT_ERROR; 
         return 0;
     }
 
@@ -823,25 +823,25 @@ ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_P
         ((src>=dest && src<(dest+destCapacity)) ||
          (dest>=src && dest<(src+srcLength)))
     ) {
-        errorCode=U_ILLEGAL_ARGUMENT_ERROR;
+        errorCode=U_ILLEGAL_ARGUMENT_ERROR; 
         return 0;
     }
 
-    CheckedArrayByteSink sink(dest, destCapacity);
-    if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) {
-        edits->reset();
-    }
-    stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
-                     (const uint8_t *)src, srcLength, sink, edits, errorCode);
-    sink.Flush();
-    if (U_SUCCESS(errorCode)) {
-        if (sink.Overflowed()) {
-            errorCode = U_BUFFER_OVERFLOW_ERROR;
-        } else if (edits != nullptr) {
-            edits->copyErrorTo(errorCode);
-        }
-    }
-    return u_terminateChars(dest, destCapacity, sink.NumberOfBytesAppended(), &errorCode);
+    CheckedArrayByteSink sink(dest, destCapacity); 
+    if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) { 
+        edits->reset(); 
+    } 
+    stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR 
+                     (const uint8_t *)src, srcLength, sink, edits, errorCode); 
+    sink.Flush(); 
+    if (U_SUCCESS(errorCode)) { 
+        if (sink.Overflowed()) { 
+            errorCode = U_BUFFER_OVERFLOW_ERROR; 
+        } else if (edits != nullptr) { 
+            edits->copyErrorTo(errorCode); 
+        } 
+    } 
+    return u_terminateChars(dest, destCapacity, sink.NumberOfBytesAppended(), &errorCode); 
 }
 
 /* public API functions */
@@ -851,11 +851,11 @@ ucasemap_utf8ToLower(const UCaseMap *csm,
                      char *dest, int32_t destCapacity,
                      const char *src, int32_t srcLength,
                      UErrorCode *pErrorCode) {
-    return ucasemap_mapUTF8(
-        csm->caseLocale, csm->options, UCASEMAP_BREAK_ITERATOR_NULL
-        dest, destCapacity,
-        src, srcLength,
-        ucasemap_internalUTF8ToLower, NULL, *pErrorCode);
+    return ucasemap_mapUTF8( 
+        csm->caseLocale, csm->options, UCASEMAP_BREAK_ITERATOR_NULL 
+        dest, destCapacity, 
+        src, srcLength, 
+        ucasemap_internalUTF8ToLower, NULL, *pErrorCode); 
 }
 
 U_CAPI int32_t U_EXPORT2
@@ -863,11 +863,11 @@ ucasemap_utf8ToUpper(const UCaseMap *csm,
                      char *dest, int32_t destCapacity,
                      const char *src, int32_t srcLength,
                      UErrorCode *pErrorCode) {
-    return ucasemap_mapUTF8(
-        csm->caseLocale, csm->options, UCASEMAP_BREAK_ITERATOR_NULL
-        dest, destCapacity,
-        src, srcLength,
-        ucasemap_internalUTF8ToUpper, NULL, *pErrorCode);
+    return ucasemap_mapUTF8( 
+        csm->caseLocale, csm->options, UCASEMAP_BREAK_ITERATOR_NULL 
+        dest, destCapacity, 
+        src, srcLength, 
+        ucasemap_internalUTF8ToUpper, NULL, *pErrorCode); 
 }
 
 U_CAPI int32_t U_EXPORT2
@@ -875,79 +875,79 @@ ucasemap_utf8FoldCase(const UCaseMap *csm,
                       char *dest, int32_t destCapacity,
                       const char *src, int32_t srcLength,
                       UErrorCode *pErrorCode) {
-    return ucasemap_mapUTF8(
-        UCASE_LOC_ROOT, csm->options, UCASEMAP_BREAK_ITERATOR_NULL
-        dest, destCapacity,
-        src, srcLength,
-        ucasemap_internalUTF8Fold, NULL, *pErrorCode);
-}
-
-U_NAMESPACE_BEGIN
-
-void CaseMap::utf8ToLower(
-        const char *locale, uint32_t options,
-        StringPiece src, ByteSink &sink, Edits *edits,
-        UErrorCode &errorCode) {
-    ucasemap_mapUTF8(
-        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
-        src.data(), src.length(),
-        ucasemap_internalUTF8ToLower, sink, edits, errorCode);
+    return ucasemap_mapUTF8( 
+        UCASE_LOC_ROOT, csm->options, UCASEMAP_BREAK_ITERATOR_NULL 
+        dest, destCapacity, 
+        src, srcLength, 
+        ucasemap_internalUTF8Fold, NULL, *pErrorCode); 
 }
-
-void CaseMap::utf8ToUpper(
-        const char *locale, uint32_t options,
-        StringPiece src, ByteSink &sink, Edits *edits,
-        UErrorCode &errorCode) {
-    ucasemap_mapUTF8(
-        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
-        src.data(), src.length(),
-        ucasemap_internalUTF8ToUpper, sink, edits, errorCode);
-}
-
-void CaseMap::utf8Fold(
-        uint32_t options,
-        StringPiece src, ByteSink &sink, Edits *edits,
-        UErrorCode &errorCode) {
-    ucasemap_mapUTF8(
-        UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL
-        src.data(), src.length(),
-        ucasemap_internalUTF8Fold, sink, edits, errorCode);
-}
-
-int32_t CaseMap::utf8ToLower(
-        const char *locale, uint32_t options,
-        const char *src, int32_t srcLength,
-        char *dest, int32_t destCapacity, Edits *edits,
-        UErrorCode &errorCode) {
-    return ucasemap_mapUTF8(
-        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
-        dest, destCapacity,
-        src, srcLength,
-        ucasemap_internalUTF8ToLower, edits, errorCode);
-}
-
-int32_t CaseMap::utf8ToUpper(
-        const char *locale, uint32_t options,
-        const char *src, int32_t srcLength,
-        char *dest, int32_t destCapacity, Edits *edits,
-        UErrorCode &errorCode) {
-    return ucasemap_mapUTF8(
-        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL
-        dest, destCapacity,
-        src, srcLength,
-        ucasemap_internalUTF8ToUpper, edits, errorCode);
-}
-
-int32_t CaseMap::utf8Fold(
-        uint32_t options,
-        const char *src, int32_t srcLength,
-        char *dest, int32_t destCapacity, Edits *edits,
-        UErrorCode &errorCode) {
-    return ucasemap_mapUTF8(
-        UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL
-        dest, destCapacity,
-        src, srcLength,
-        ucasemap_internalUTF8Fold, edits, errorCode);
-}
-
-U_NAMESPACE_END
+ 
+U_NAMESPACE_BEGIN 
+ 
+void CaseMap::utf8ToLower( 
+        const char *locale, uint32_t options, 
+        StringPiece src, ByteSink &sink, Edits *edits, 
+        UErrorCode &errorCode) { 
+    ucasemap_mapUTF8( 
+        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL 
+        src.data(), src.length(), 
+        ucasemap_internalUTF8ToLower, sink, edits, errorCode); 
+} 
+ 
+void CaseMap::utf8ToUpper( 
+        const char *locale, uint32_t options, 
+        StringPiece src, ByteSink &sink, Edits *edits, 
+        UErrorCode &errorCode) { 
+    ucasemap_mapUTF8( 
+        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL 
+        src.data(), src.length(), 
+        ucasemap_internalUTF8ToUpper, sink, edits, errorCode); 
+} 
+ 
+void CaseMap::utf8Fold( 
+        uint32_t options, 
+        StringPiece src, ByteSink &sink, Edits *edits, 
+        UErrorCode &errorCode) { 
+    ucasemap_mapUTF8( 
+        UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL 
+        src.data(), src.length(), 
+        ucasemap_internalUTF8Fold, sink, edits, errorCode); 
+} 
+ 
+int32_t CaseMap::utf8ToLower( 
+        const char *locale, uint32_t options, 
+        const char *src, int32_t srcLength, 
+        char *dest, int32_t destCapacity, Edits *edits, 
+        UErrorCode &errorCode) { 
+    return ucasemap_mapUTF8( 
+        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL 
+        dest, destCapacity, 
+        src, srcLength, 
+        ucasemap_internalUTF8ToLower, edits, errorCode); 
+} 
+ 
+int32_t CaseMap::utf8ToUpper( 
+        const char *locale, uint32_t options, 
+        const char *src, int32_t srcLength, 
+        char *dest, int32_t destCapacity, Edits *edits, 
+        UErrorCode &errorCode) { 
+    return ucasemap_mapUTF8( 
+        ustrcase_getCaseLocale(locale), options, UCASEMAP_BREAK_ITERATOR_NULL 
+        dest, destCapacity, 
+        src, srcLength, 
+        ucasemap_internalUTF8ToUpper, edits, errorCode); 
+} 
+ 
+int32_t CaseMap::utf8Fold( 
+        uint32_t options, 
+        const char *src, int32_t srcLength, 
+        char *dest, int32_t destCapacity, Edits *edits, 
+        UErrorCode &errorCode) { 
+    return ucasemap_mapUTF8( 
+        UCASE_LOC_ROOT, options, UCASEMAP_BREAK_ITERATOR_NULL 
+        dest, destCapacity, 
+        src, srcLength, 
+        ucasemap_internalUTF8Fold, edits, errorCode); 
+} 
+ 
+U_NAMESPACE_END