diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/strings/internal/memutil.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/strings/internal/memutil.cc | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/third_party/abseil_cpp/absl/strings/internal/memutil.cc b/third_party/abseil_cpp/absl/strings/internal/memutil.cc deleted file mode 100644 index 2519c6881e35..000000000000 --- a/third_party/abseil_cpp/absl/strings/internal/memutil.cc +++ /dev/null @@ -1,112 +0,0 @@ -// Copyright 2017 The Abseil Authors. -// -// 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 -// -// https://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. - -#include "absl/strings/internal/memutil.h" - -#include <cstdlib> - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace strings_internal { - -int memcasecmp(const char* s1, const char* s2, size_t len) { - const unsigned char* us1 = reinterpret_cast<const unsigned char*>(s1); - const unsigned char* us2 = reinterpret_cast<const unsigned char*>(s2); - - for (size_t i = 0; i < len; i++) { - const int diff = - int{static_cast<unsigned char>(absl::ascii_tolower(us1[i]))} - - int{static_cast<unsigned char>(absl::ascii_tolower(us2[i]))}; - if (diff != 0) return diff; - } - return 0; -} - -char* memdup(const char* s, size_t slen) { - void* copy; - if ((copy = malloc(slen)) == nullptr) return nullptr; - memcpy(copy, s, slen); - return reinterpret_cast<char*>(copy); -} - -char* memrchr(const char* s, int c, size_t slen) { - for (const char* e = s + slen - 1; e >= s; e--) { - if (*e == c) return const_cast<char*>(e); - } - return nullptr; -} - -size_t memspn(const char* s, size_t slen, const char* accept) { - const char* p = s; - const char* spanp; - char c, sc; - -cont: - c = *p++; - if (slen-- == 0) return p - 1 - s; - for (spanp = accept; (sc = *spanp++) != '\0';) - if (sc == c) goto cont; - return p - 1 - s; -} - -size_t memcspn(const char* s, size_t slen, const char* reject) { - const char* p = s; - const char* spanp; - char c, sc; - - while (slen-- != 0) { - c = *p++; - for (spanp = reject; (sc = *spanp++) != '\0';) - if (sc == c) return p - 1 - s; - } - return p - s; -} - -char* mempbrk(const char* s, size_t slen, const char* accept) { - const char* scanp; - int sc; - - for (; slen; ++s, --slen) { - for (scanp = accept; (sc = *scanp++) != '\0';) - if (sc == *s) return const_cast<char*>(s); - } - return nullptr; -} - -// This is significantly faster for case-sensitive matches with very -// few possible matches. See unit test for benchmarks. -const char* memmatch(const char* phaystack, size_t haylen, const char* pneedle, - size_t neelen) { - if (0 == neelen) { - return phaystack; // even if haylen is 0 - } - if (haylen < neelen) return nullptr; - - const char* match; - const char* hayend = phaystack + haylen - neelen + 1; - // A static cast is used here to work around the fact that memchr returns - // a void* on Posix-compliant systems and const void* on Windows. - while ((match = static_cast<const char*>( - memchr(phaystack, pneedle[0], hayend - phaystack)))) { - if (memcmp(match, pneedle, neelen) == 0) - return match; - else - phaystack = match + 1; - } - return nullptr; -} - -} // namespace strings_internal -ABSL_NAMESPACE_END -} // namespace absl |