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author | 2015-08-25 15:36:20 -0700 | |
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committer | 2015-08-25 15:36:20 -0700 | |
commit | a4e884721d4333eef8b208b26ff35f1dde25b6c1 (patch) | |
tree | a82dabdddbe7d00190be04b299a378aed4041f24 /src/cpp/util/string_ref.cc | |
parent | f886985d2c775d480079ea979323ae22efc0afc6 (diff) | |
parent | 3cfb4795ceaaebff3b33f2ef7612ffcff72b53ab (diff) |
merge to head
Diffstat (limited to 'src/cpp/util/string_ref.cc')
-rw-r--r-- | src/cpp/util/string_ref.cc | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/cpp/util/string_ref.cc b/src/cpp/util/string_ref.cc new file mode 100644 index 0000000000..8483e8c2ee --- /dev/null +++ b/src/cpp/util/string_ref.cc @@ -0,0 +1,111 @@ +/* + * + * Copyright 2015, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <grpc++/support/string_ref.h> + +#include <string.h> + +#include <algorithm> + +namespace grpc { + +constexpr size_t string_ref::npos; + +string_ref& string_ref::operator=(const string_ref& rhs) { + data_ = rhs.data_; + length_ = rhs.length_; + return *this; +} + +string_ref::string_ref(const char* s) : data_(s), length_(strlen(s)) {} + +string_ref string_ref::substr(size_t pos, size_t n) const { + if (pos > length_) pos = length_; + if (n > (length_ - pos)) n = length_ - pos; + return string_ref(data_ + pos, n); +} + +int string_ref::compare(string_ref x) const { + size_t min_size = length_ < x.length_ ? length_ : x.length_; + int r = memcmp(data_, x.data_, min_size); + if (r < 0) return -1; + if (r > 0) return 1; + if (length_ < x.length_) return -1; + if (length_ > x.length_) return 1; + return 0; +} + +bool string_ref::starts_with(string_ref x) const { + return length_ >= x.length_ && (memcmp(data_, x.data_, x.length_) == 0); +} + +bool string_ref::ends_with(string_ref x) const { + return length_ >= x.length_ && + (memcmp(data_ + (length_ - x.length_), x.data_, x.length_) == 0); +} + +size_t string_ref::find(string_ref s) const { + auto it = std::search(cbegin(), cend(), s.cbegin(), s.cend()); + return it == cend() ? npos : std::distance(cbegin(), it); +} + +size_t string_ref::find(char c) const { + auto it = std::find_if(cbegin(), cend(), [c](char cc) { return cc == c; }); + return it == cend() ? npos : std::distance(cbegin(), it); +} + +bool operator==(string_ref x, string_ref y) { + return x.compare(y) == 0; +} + +bool operator!=(string_ref x, string_ref y) { + return x.compare(y) != 0; +} + +bool operator<(string_ref x, string_ref y) { + return x.compare(y) < 0; +} + +bool operator<=(string_ref x, string_ref y) { + return x.compare(y) <= 0; +} + +bool operator>(string_ref x, string_ref y) { + return x.compare(y) > 0; +} + +bool operator>=(string_ref x, string_ref y) { + return x.compare(y) >= 0; +} + +} // namespace grpc |