/jni-build/jni/include/google/protobuf/src/google/protobuf/io/printer.cc
C++ | 284 lines | 203 code | 33 blank | 48 comment | 27 complexity | 2eb72775d6d7e7ae27f60579c70fc837 MD5 | raw file
- // 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.
- // Author: kenton@google.com (Kenton Varda)
- // Based on original Protocol Buffers design by
- // Sanjay Ghemawat, Jeff Dean, and others.
- #include <google/protobuf/io/printer.h>
- #include <google/protobuf/io/zero_copy_stream.h>
- #include <google/protobuf/stubs/logging.h>
- #include <google/protobuf/stubs/common.h>
- namespace google {
- namespace protobuf {
- namespace io {
- Printer::Printer(ZeroCopyOutputStream* output, char variable_delimiter)
- : variable_delimiter_(variable_delimiter),
- output_(output),
- buffer_(NULL),
- buffer_size_(0),
- at_start_of_line_(true),
- failed_(false) {
- }
- Printer::~Printer() {
- // Only BackUp() if we have called Next() at least once and never failed.
- if (buffer_size_ > 0 && !failed_) {
- output_->BackUp(buffer_size_);
- }
- }
- void Printer::Print(const map<string, string>& variables, const char* text) {
- int size = strlen(text);
- int pos = 0; // The number of bytes we've written so far.
- for (int i = 0; i < size; i++) {
- if (text[i] == '\n') {
- // Saw newline. If there is more text, we may need to insert an indent
- // here. So, write what we have so far, including the '\n'.
- WriteRaw(text + pos, i - pos + 1);
- pos = i + 1;
- // Setting this true will cause the next WriteRaw() to insert an indent
- // first.
- at_start_of_line_ = true;
- } else if (text[i] == variable_delimiter_) {
- // Saw the start of a variable name.
- // Write what we have so far.
- WriteRaw(text + pos, i - pos);
- pos = i + 1;
- // Find closing delimiter.
- const char* end = strchr(text + pos, variable_delimiter_);
- if (end == NULL) {
- GOOGLE_LOG(DFATAL) << " Unclosed variable name.";
- end = text + pos;
- }
- int endpos = end - text;
- string varname(text + pos, endpos - pos);
- if (varname.empty()) {
- // Two delimiters in a row reduce to a literal delimiter character.
- WriteRaw(&variable_delimiter_, 1);
- } else {
- // Replace with the variable's value.
- map<string, string>::const_iterator iter = variables.find(varname);
- if (iter == variables.end()) {
- GOOGLE_LOG(DFATAL) << " Undefined variable: " << varname;
- } else {
- WriteRaw(iter->second.data(), iter->second.size());
- }
- }
- // Advance past this variable.
- i = endpos;
- pos = endpos + 1;
- }
- }
- // Write the rest.
- WriteRaw(text + pos, size - pos);
- }
- void Printer::Print(const char* text) {
- static map<string, string> empty;
- Print(empty, text);
- }
- void Printer::Print(const char* text,
- const char* variable, const string& value) {
- map<string, string> vars;
- vars[variable] = value;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2,
- const char* variable3, const string& value3) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- vars[variable3] = value3;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2,
- const char* variable3, const string& value3,
- const char* variable4, const string& value4) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- vars[variable3] = value3;
- vars[variable4] = value4;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2,
- const char* variable3, const string& value3,
- const char* variable4, const string& value4,
- const char* variable5, const string& value5) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- vars[variable3] = value3;
- vars[variable4] = value4;
- vars[variable5] = value5;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2,
- const char* variable3, const string& value3,
- const char* variable4, const string& value4,
- const char* variable5, const string& value5,
- const char* variable6, const string& value6) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- vars[variable3] = value3;
- vars[variable4] = value4;
- vars[variable5] = value5;
- vars[variable6] = value6;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2,
- const char* variable3, const string& value3,
- const char* variable4, const string& value4,
- const char* variable5, const string& value5,
- const char* variable6, const string& value6,
- const char* variable7, const string& value7) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- vars[variable3] = value3;
- vars[variable4] = value4;
- vars[variable5] = value5;
- vars[variable6] = value6;
- vars[variable7] = value7;
- Print(vars, text);
- }
- void Printer::Print(const char* text,
- const char* variable1, const string& value1,
- const char* variable2, const string& value2,
- const char* variable3, const string& value3,
- const char* variable4, const string& value4,
- const char* variable5, const string& value5,
- const char* variable6, const string& value6,
- const char* variable7, const string& value7,
- const char* variable8, const string& value8) {
- map<string, string> vars;
- vars[variable1] = value1;
- vars[variable2] = value2;
- vars[variable3] = value3;
- vars[variable4] = value4;
- vars[variable5] = value5;
- vars[variable6] = value6;
- vars[variable7] = value7;
- vars[variable8] = value8;
- Print(vars, text);
- }
- void Printer::Indent() {
- indent_ += " ";
- }
- void Printer::Outdent() {
- if (indent_.empty()) {
- GOOGLE_LOG(DFATAL) << " Outdent() without matching Indent().";
- return;
- }
- indent_.resize(indent_.size() - 2);
- }
- void Printer::PrintRaw(const string& data) {
- WriteRaw(data.data(), data.size());
- }
- void Printer::PrintRaw(const char* data) {
- if (failed_) return;
- WriteRaw(data, strlen(data));
- }
- void Printer::WriteRaw(const char* data, int size) {
- if (failed_) return;
- if (size == 0) return;
- if (at_start_of_line_ && (size > 0) && (data[0] != '\n')) {
- // Insert an indent.
- at_start_of_line_ = false;
- WriteRaw(indent_.data(), indent_.size());
- if (failed_) return;
- }
- while (size > buffer_size_) {
- // Data exceeds space in the buffer. Copy what we can and request a
- // new buffer.
- memcpy(buffer_, data, buffer_size_);
- data += buffer_size_;
- size -= buffer_size_;
- void* void_buffer;
- failed_ = !output_->Next(&void_buffer, &buffer_size_);
- if (failed_) return;
- buffer_ = reinterpret_cast<char*>(void_buffer);
- }
- // Buffer is big enough to receive the data; copy it.
- memcpy(buffer_, data, size);
- buffer_ += size;
- buffer_size_ -= size;
- }
- } // namespace io
- } // namespace protobuf
- } // namespace google