Squashed 'third_party/protobuf/' content from commit e35e248
Change-Id: I6cbe123d09fe50fdcad0e51466665daeee7433c7
git-subtree-dir: third_party/protobuf
git-subtree-split: e35e24800fb8d694bdeea5fd63dc7d1b14d68723
diff --git a/src/google/protobuf/stubs/stringpiece.cc b/src/google/protobuf/stubs/stringpiece.cc
new file mode 100644
index 0000000..989474b
--- /dev/null
+++ b/src/google/protobuf/stubs/stringpiece.cc
@@ -0,0 +1,268 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// 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 <google/protobuf/stubs/stringpiece.h>
+
+#include <string.h>
+#include <algorithm>
+#include <climits>
+#include <string>
+#include <ostream>
+
+namespace google {
+namespace protobuf {
+std::ostream& operator<<(std::ostream& o, StringPiece piece) {
+ o.write(piece.data(), piece.size());
+ return o;
+}
+
+// Out-of-line error path.
+void StringPiece::LogFatalSizeTooBig(size_t size, const char* details) {
+ GOOGLE_LOG(FATAL) << "size too big: " << size << " details: " << details;
+}
+
+StringPiece::StringPiece(StringPiece x, stringpiece_ssize_type pos)
+ : ptr_(x.ptr_ + pos), length_(x.length_ - pos) {
+ GOOGLE_DCHECK_LE(0, pos);
+ GOOGLE_DCHECK_LE(pos, x.length_);
+}
+
+StringPiece::StringPiece(StringPiece x,
+ stringpiece_ssize_type pos,
+ stringpiece_ssize_type len)
+ : ptr_(x.ptr_ + pos), length_(std::min(len, x.length_ - pos)) {
+ GOOGLE_DCHECK_LE(0, pos);
+ GOOGLE_DCHECK_LE(pos, x.length_);
+ GOOGLE_DCHECK_GE(len, 0);
+}
+
+void StringPiece::CopyToString(string* target) const {
+ target->assign(ptr_, length_);
+}
+
+void StringPiece::AppendToString(string* target) const {
+ target->append(ptr_, length_);
+}
+
+bool StringPiece::Consume(StringPiece x) {
+ if (starts_with(x)) {
+ ptr_ += x.length_;
+ length_ -= x.length_;
+ return true;
+ }
+ return false;
+}
+
+bool StringPiece::ConsumeFromEnd(StringPiece x) {
+ if (ends_with(x)) {
+ length_ -= x.length_;
+ return true;
+ }
+ return false;
+}
+
+stringpiece_ssize_type StringPiece::copy(char* buf,
+ size_type n,
+ size_type pos) const {
+ stringpiece_ssize_type ret = std::min(length_ - pos, n);
+ memcpy(buf, ptr_ + pos, ret);
+ return ret;
+}
+
+bool StringPiece::contains(StringPiece s) const {
+ return find(s, 0) != npos;
+}
+
+stringpiece_ssize_type StringPiece::find(StringPiece s, size_type pos) const {
+ if (length_ <= 0 || pos > static_cast<size_type>(length_)) {
+ if (length_ == 0 && pos == 0 && s.length_ == 0) return 0;
+ return npos;
+ }
+ const char *result = std::search(ptr_ + pos, ptr_ + length_,
+ s.ptr_, s.ptr_ + s.length_);
+ return result == ptr_ + length_ ? npos : result - ptr_;
+}
+
+stringpiece_ssize_type StringPiece::find(char c, size_type pos) const {
+ if (length_ <= 0 || pos >= static_cast<size_type>(length_)) {
+ return npos;
+ }
+ const char* result = static_cast<const char*>(
+ memchr(ptr_ + pos, c, length_ - pos));
+ return result != NULL ? result - ptr_ : npos;
+}
+
+stringpiece_ssize_type StringPiece::rfind(StringPiece s, size_type pos) const {
+ if (length_ < s.length_) return npos;
+ const size_t ulen = length_;
+ if (s.length_ == 0) return std::min(ulen, pos);
+
+ const char* last = ptr_ + std::min(ulen - s.length_, pos) + s.length_;
+ const char* result = std::find_end(ptr_, last, s.ptr_, s.ptr_ + s.length_);
+ return result != last ? result - ptr_ : npos;
+}
+
+// Search range is [0..pos] inclusive. If pos == npos, search everything.
+stringpiece_ssize_type StringPiece::rfind(char c, size_type pos) const {
+ // Note: memrchr() is not available on Windows.
+ if (length_ <= 0) return npos;
+ for (stringpiece_ssize_type i =
+ std::min(pos, static_cast<size_type>(length_ - 1));
+ i >= 0; --i) {
+ if (ptr_[i] == c) {
+ return i;
+ }
+ }
+ return npos;
+}
+
+// For each character in characters_wanted, sets the index corresponding
+// to the ASCII code of that character to 1 in table. This is used by
+// the find_.*_of methods below to tell whether or not a character is in
+// the lookup table in constant time.
+// The argument `table' must be an array that is large enough to hold all
+// the possible values of an unsigned char. Thus it should be be declared
+// as follows:
+// bool table[UCHAR_MAX + 1]
+static inline void BuildLookupTable(StringPiece characters_wanted,
+ bool* table) {
+ const stringpiece_ssize_type length = characters_wanted.length();
+ const char* const data = characters_wanted.data();
+ for (stringpiece_ssize_type i = 0; i < length; ++i) {
+ table[static_cast<unsigned char>(data[i])] = true;
+ }
+}
+
+stringpiece_ssize_type StringPiece::find_first_of(StringPiece s,
+ size_type pos) const {
+ if (length_ <= 0 || s.length_ <= 0) {
+ return npos;
+ }
+ // Avoid the cost of BuildLookupTable() for a single-character search.
+ if (s.length_ == 1) return find_first_of(s.ptr_[0], pos);
+
+ bool lookup[UCHAR_MAX + 1] = { false };
+ BuildLookupTable(s, lookup);
+ for (stringpiece_ssize_type i = pos; i < length_; ++i) {
+ if (lookup[static_cast<unsigned char>(ptr_[i])]) {
+ return i;
+ }
+ }
+ return npos;
+}
+
+stringpiece_ssize_type StringPiece::find_first_not_of(StringPiece s,
+ size_type pos) const {
+ if (length_ <= 0) return npos;
+ if (s.length_ <= 0) return 0;
+ // Avoid the cost of BuildLookupTable() for a single-character search.
+ if (s.length_ == 1) return find_first_not_of(s.ptr_[0], pos);
+
+ bool lookup[UCHAR_MAX + 1] = { false };
+ BuildLookupTable(s, lookup);
+ for (stringpiece_ssize_type i = pos; i < length_; ++i) {
+ if (!lookup[static_cast<unsigned char>(ptr_[i])]) {
+ return i;
+ }
+ }
+ return npos;
+}
+
+stringpiece_ssize_type StringPiece::find_first_not_of(char c,
+ size_type pos) const {
+ if (length_ <= 0) return npos;
+
+ for (; pos < static_cast<size_type>(length_); ++pos) {
+ if (ptr_[pos] != c) {
+ return pos;
+ }
+ }
+ return npos;
+}
+
+stringpiece_ssize_type StringPiece::find_last_of(StringPiece s,
+ size_type pos) const {
+ if (length_ <= 0 || s.length_ <= 0) return npos;
+ // Avoid the cost of BuildLookupTable() for a single-character search.
+ if (s.length_ == 1) return find_last_of(s.ptr_[0], pos);
+
+ bool lookup[UCHAR_MAX + 1] = { false };
+ BuildLookupTable(s, lookup);
+ for (stringpiece_ssize_type i =
+ std::min(pos, static_cast<size_type>(length_ - 1)); i >= 0; --i) {
+ if (lookup[static_cast<unsigned char>(ptr_[i])]) {
+ return i;
+ }
+ }
+ return npos;
+}
+
+stringpiece_ssize_type StringPiece::find_last_not_of(StringPiece s,
+ size_type pos) const {
+ if (length_ <= 0) return npos;
+
+ stringpiece_ssize_type i = std::min(pos, static_cast<size_type>(length_ - 1));
+ if (s.length_ <= 0) return i;
+
+ // Avoid the cost of BuildLookupTable() for a single-character search.
+ if (s.length_ == 1) return find_last_not_of(s.ptr_[0], pos);
+
+ bool lookup[UCHAR_MAX + 1] = { false };
+ BuildLookupTable(s, lookup);
+ for (; i >= 0; --i) {
+ if (!lookup[static_cast<unsigned char>(ptr_[i])]) {
+ return i;
+ }
+ }
+ return npos;
+}
+
+stringpiece_ssize_type StringPiece::find_last_not_of(char c,
+ size_type pos) const {
+ if (length_ <= 0) return npos;
+
+ for (stringpiece_ssize_type i =
+ std::min(pos, static_cast<size_type>(length_ - 1)); i >= 0; --i) {
+ if (ptr_[i] != c) {
+ return i;
+ }
+ }
+ return npos;
+}
+
+StringPiece StringPiece::substr(size_type pos, size_type n) const {
+ if (pos > length_) pos = length_;
+ if (n > length_ - pos) n = length_ - pos;
+ return StringPiece(ptr_ + pos, n);
+}
+
+const StringPiece::size_type StringPiece::npos = size_type(-1);
+
+} // namespace protobuf
+} // namespace google