98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
#include "FileLoader.h"
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#include "FileReader.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdint.h>
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/** Create a FileLoader. */
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FileLoader::FileLoader()
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{
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m_buf = NULL;
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m_line_endings = LINE_ENDING_LF;
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m_lines = NULL;
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}
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FileLoader::~FileLoader()
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{
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if (m_buf != NULL)
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{
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delete[] m_buf;
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m_buf = NULL;
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}
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}
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bool FileLoader::load(const char * fname)
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{
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size_t size;
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if (!FileReader::load(fname, &m_buf, &size))
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{
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return false;
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}
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load_buf(size);
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return true;
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}
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void FileLoader::load_buf(size_t size)
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{
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LineIndexPairVectorRef lines[LINE_ENDING_COUNT];
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size_t line_start[LINE_ENDING_COUNT] = {0};
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unsigned int n_cr = 0;
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unsigned int n_lf = 0;
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bool crlf = true;
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for (size_t i = 0; i < LINE_ENDING_COUNT; i++)
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{
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lines[i] = std::make_shared<LineIndexPairVector>();
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}
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for (size_t i = 0; i < size; i++)
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{
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if (m_buf[i] == '\r')
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{
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lines[LINE_ENDING_CR]->push_back(LineIndexPair(&m_buf[line_start[LINE_ENDING_CR]], i - line_start[LINE_ENDING_CR]));
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n_cr++;
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line_start[LINE_ENDING_CR] = i + 1;
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if (crlf)
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{
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if ((i < (size - 1)) && (m_buf[i + 1] == '\n'))
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{
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lines[LINE_ENDING_CRLF]->push_back(LineIndexPair(&m_buf[line_start[LINE_ENDING_CRLF]], i - line_start[LINE_ENDING_CRLF]));
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n_lf++;
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i++;
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line_start[LINE_ENDING_CRLF] = i + 1;
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}
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else
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{
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crlf = false;
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}
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}
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}
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else if (m_buf[i] == '\n')
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{
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lines[LINE_ENDING_LF]->push_back(LineIndexPair(&m_buf[line_start[LINE_ENDING_LF]], i - line_start[LINE_ENDING_LF]));
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crlf = false;
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n_lf++;
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line_start[LINE_ENDING_LF] = i + 1;
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}
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}
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if (crlf && (n_lf > 0u))
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{
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m_line_endings = LINE_ENDING_CRLF;
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m_lines = lines[LINE_ENDING_CRLF];
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}
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else if ((n_cr > 0u) && (n_lf == 0u))
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{
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m_line_endings = LINE_ENDING_CR;
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m_lines = lines[LINE_ENDING_CR];
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}
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else
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{
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m_line_endings = LINE_ENDING_LF;
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m_lines = lines[LINE_ENDING_LF];
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}
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}
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