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string-util.cc
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string-util.cc
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// festus/string-util.cc
//
// 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: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.
//
// Copyright 2016 Google, Inc.
// Author: [email protected] (Martin Jansche)
#include "festus/string-util.h"
#include <iostream>
#include <vector>
#include <fst/compat.h>
#include <google/protobuf/stubs/stringpiece.h>
namespace festus {
std::vector<StringPiece> Split(
const StringPiece str, const StringPiece delimiters) {
using ::google::protobuf::stringpiece_ssize_type;
static const stringpiece_ssize_type kNpos = StringPiece::npos;
std::vector<StringPiece> split;
auto begin = str.find_first_not_of(delimiters);
while (true) {
if (kNpos == begin) {
break;
}
auto end = str.find_first_of(delimiters, begin);
if (kNpos == end) {
split.emplace_back(str.substr(begin));
break;
}
split.emplace_back(str.substr(begin, end - begin));
begin = str.find_first_not_of(delimiters, end);
}
return split;
}
LineReader::~LineReader() {
if (infile_.is_open()) {
infile_.close();
}
}
bool LineReader::Reset(StringPiece path) {
if (infile_.is_open()) {
infile_.close();
}
if (path.empty()) {
instream_ = &std::cin;
} else {
infile_.open(path);
if (!infile_) {
LOG(ERROR) << "Could not open file: " << path;
return false;
}
instream_ = &infile_;
}
line_number_ = 0;
return true;
}
} // namespace festus