| // Copyright 2017 Google Inc. |
| // |
| // 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://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. |
| |
| // Reads a file line by line and stores the data on the stack. This allows |
| // parsing files in one go without allocating. |
| #ifndef CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_ |
| #define CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_ |
| |
| #include <stdbool.h> |
| |
| #include "cpu_features_macros.h" |
| #include "internal/string_view.h" |
| |
| CPU_FEATURES_START_CPP_NAMESPACE |
| |
| typedef struct { |
| char buffer[STACK_LINE_READER_BUFFER_SIZE]; |
| StringView view; |
| int fd; |
| bool skip_mode; |
| } StackLineReader; |
| |
| // Initializes a StackLineReader. |
| void StackLineReader_Initialize(StackLineReader* reader, int fd); |
| |
| typedef struct { |
| StringView line; // A view of the line. |
| bool eof; // Nothing more to read, we reached EOF. |
| bool full_line; // If false the line was truncated to |
| // STACK_LINE_READER_BUFFER_SIZE. |
| } LineResult; |
| |
| // Reads the file pointed to by fd and tries to read a full line. |
| LineResult StackLineReader_NextLine(StackLineReader* reader); |
| |
| CPU_FEATURES_END_CPP_NAMESPACE |
| |
| #endif // CPU_FEATURES_INCLUDE_INTERNAL_STACK_LINE_READER_H_ |