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50 lines
1.6 KiB
50 lines
1.6 KiB
4 months ago
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// Copyright 2017 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Reads a file line by line and stores the data on the stack. This allows
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// parsing files in one go without allocating.
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#ifndef CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_
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#define CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_
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#include <stdbool.h>
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#include "cpu_features_macros.h"
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#include "internal/string_view.h"
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CPU_FEATURES_START_CPP_NAMESPACE
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typedef struct {
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char buffer[STACK_LINE_READER_BUFFER_SIZE];
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StringView view;
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int fd;
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bool skip_mode;
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} StackLineReader;
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// Initializes a StackLineReader.
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void StackLineReader_Initialize(StackLineReader* reader, int fd);
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typedef struct {
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StringView line; // A view of the line.
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bool eof; // Nothing more to read, we reached EOF.
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bool full_line; // If false the line was truncated to
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// STACK_LINE_READER_BUFFER_SIZE.
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} LineResult;
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// Reads the file pointed to by fd and tries to read a full line.
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LineResult StackLineReader_NextLine(StackLineReader* reader);
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CPU_FEATURES_END_CPP_NAMESPACE
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#endif // CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_
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