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Diffstat (limited to 'skia/include/corecg/SkTSearch.h')
-rw-r--r-- | skia/include/corecg/SkTSearch.h | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/skia/include/corecg/SkTSearch.h b/skia/include/corecg/SkTSearch.h deleted file mode 100644 index f29e6f5..0000000 --- a/skia/include/corecg/SkTSearch.h +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Copyright (C) 2006 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef SkTSearch_DEFINED -#define SkTSearch_DEFINED - -#include "SkTypes.h" - -template <typename T> -int SkTSearch(const T* base, int count, const T& target, size_t elemSize) -{ - SkASSERT(count >= 0); - if (count <= 0) - return ~0; - - SkASSERT(base != NULL); // base may be NULL if count is zero - - int lo = 0; - int hi = count - 1; - - while (lo < hi) - { - int mid = (hi + lo) >> 1; - const T* elem = (const T*)((const char*)base + mid * elemSize); - - if (*elem < target) - lo = mid + 1; - else - hi = mid; - } - - const T* elem = (const T*)((const char*)base + hi * elemSize); - if (*elem != target) - { - if (*elem < target) - hi += 1; - hi = ~hi; - } - return hi; -} - -template <typename T> -int SkTSearch(const T* base, int count, const T& target, size_t elemSize, - int (*compare)(const T&, const T&)) -{ - SkASSERT(count >= 0); - if (count <= 0) { - return ~0; - } - - SkASSERT(base != NULL); // base may be NULL if count is zero - - int lo = 0; - int hi = count - 1; - - while (lo < hi) { - int mid = (hi + lo) >> 1; - const T* elem = (const T*)((const char*)base + mid * elemSize); - - if ((*compare)(*elem, target) < 0) - lo = mid + 1; - else - hi = mid; - } - - const T* elem = (const T*)((const char*)base + hi * elemSize); - int pred = (*compare)(*elem, target); - if (pred != 0) { - if (pred < 0) - hi += 1; - hi = ~hi; - } - return hi; -} - -template <typename T> -int SkTSearch(const T** base, int count, const T* target, size_t elemSize, - int (*compare)(const T*, const T*)) -{ - SkASSERT(count >= 0); - if (count <= 0) - return ~0; - - SkASSERT(base != NULL); // base may be NULL if count is zero - - int lo = 0; - int hi = count - 1; - - while (lo < hi) - { - int mid = (hi + lo) >> 1; - const T* elem = *(const T**)((const char*)base + mid * elemSize); - - if ((*compare)(elem, target) < 0) - lo = mid + 1; - else - hi = mid; - } - - const T* elem = *(const T**)((const char*)base + hi * elemSize); - int pred = (*compare)(elem, target); - if (pred != 0) - { - if (pred < 0) - hi += 1; - hi = ~hi; - } - return hi; -} - -int SkStrSearch(const char*const* base, int count, const char target[], - size_t target_len, size_t elemSize); -int SkStrSearch(const char*const* base, int count, const char target[], - size_t elemSize); - -/** Like SkStrSearch, but treats target as if it were all lower-case. Assumes that - base points to a table of lower-case strings. -*/ -int SkStrLCSearch(const char*const* base, int count, const char target[], - size_t target_len, size_t elemSize); -int SkStrLCSearch(const char*const* base, int count, const char target[], - size_t elemSize); - -/** Helper class to convert a string to lower-case, but only modifying the ascii - characters. This makes the routine very fast and never changes the string - length, but it is not suitable for linguistic purposes. Normally this is - used for buiding and searching string tables. -*/ -class SkAutoAsciiToLC { -public: - SkAutoAsciiToLC(const char str[], size_t len = (size_t)-1); - ~SkAutoAsciiToLC(); - - const char* lc() const { return fLC; } - size_t length() const { return fLength; } - -private: - char* fLC; // points to either the heap or fStorage - size_t fLength; - enum { - STORAGE = 64 - }; - char fStorage[STORAGE+1]; -}; - -extern "C" { - typedef int (*SkQSortCompareProc)(const void*, const void*); - void SkQSort(void* base, size_t count, size_t elemSize, SkQSortCompareProc); -} - -SkDEBUGCODE(void SkQSort_UnitTest();) - -#endif - |