74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
#include "file.hh"
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#include "buffer.hh"
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#include "buffer_manager.hh"
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#include "assert.hh"
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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 <cstring>
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namespace Kakoune
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{
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std::string read_file(const std::string& filename)
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{
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int fd = open(filename.c_str(), O_RDONLY);
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if (fd == -1)
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{
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if (errno == ENOENT)
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throw file_not_found(filename);
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throw file_access_error(filename, strerror(errno));
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}
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std::string content;
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char buf[256];
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while (true)
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{
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ssize_t size = read(fd, buf, 256);
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if (size == -1 or size == 0)
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break;
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content += std::string(buf, size);
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}
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close(fd);
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return content;
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}
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Buffer* create_buffer_from_file(const std::string& filename)
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{
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std::string content = read_file(filename);
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if (Buffer* buffer = BufferManager::instance().get_buffer(filename))
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BufferManager::instance().delete_buffer(buffer);
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return new Buffer(filename, Buffer::Type::File, content);
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}
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void write_buffer_to_file(const Buffer& buffer, const std::string& filename)
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{
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int fd = open(filename.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0644);
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if (fd == -1)
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throw file_access_error(filename, strerror(errno));
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const BufferString& content = buffer.content();
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ssize_t count = content.length() * sizeof(BufferChar);
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const char* ptr = content.c_str();
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while (count)
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{
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ssize_t written = write(fd, ptr, count);
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ptr += written;
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count -= written;
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if (written == -1)
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throw file_access_error(filename, strerror(errno));
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}
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close(fd);
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}
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}
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