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#include "pilotfile/BinaryFileHandler.h"
pilot::BinaryFileHandler::BinaryFileHandler(CFILE* cfp) : _cfp(cfp) {
Assertion(cfp != nullptr, "File pointer must be valid!");
}
pilot::BinaryFileHandler::~BinaryFileHandler() {
cfclose(_cfp);
_cfp = nullptr;
}
void pilot::BinaryFileHandler::writeByte(const char*, std::int8_t value) {
cfwrite_char(value, _cfp);
}
void pilot::BinaryFileHandler::writeUByte(const char*, std::uint8_t value) {
cfwrite_ubyte(value, _cfp);
}
void pilot::BinaryFileHandler::writeShort(const char*, std::int16_t value) {
cfwrite_short(value, _cfp);
}
void pilot::BinaryFileHandler::writeInt(const char*, std::int32_t value) {
cfwrite_int(value, _cfp);
}
void pilot::BinaryFileHandler::writeUInt(const char*, std::uint32_t value) {
cfwrite_uint(value, _cfp);
}
void pilot::BinaryFileHandler::writeFloat(const char*, float value) {
cfwrite_float(value, _cfp);
}
void pilot::BinaryFileHandler::writeString(const char*, const char* str) {
cfwrite_string_len(str, _cfp);
}
void pilot::BinaryFileHandler::beginWritingSections() {
Assertion(!_writingSections, "Section writing nesting is not supported!");
_writingSections = true;
}
void pilot::BinaryFileHandler::startSectionWrite(Section id) {
if (id == Section::Unnamed) {
_sectionOffsets.push_back({id, 0});
return;
}
cfwrite_ushort((ushort) id, _cfp);
// to be updated when endSection() is called
cfwrite_int(0, _cfp);
// starting offset, for size of section
_sectionOffsets.push_back({id, (size_t)cftell(_cfp)});
}
void pilot::BinaryFileHandler::endSectionWrite() {
Assertion(!_sectionOffsets.empty(), "No active section!");
auto previous_off = _sectionOffsets.back();
_sectionOffsets.pop_back();
if (previous_off.id == Section::Unnamed) {
// ignore unnamed sections, these are only needed for JSON
return;
}
size_t cur = (size_t) cftell(_cfp);
Assert(cur >= previous_off.offset);
size_t section_size = cur - previous_off.offset;
if (section_size) {
// go back to section size in file and write proper value
cfseek(_cfp, (int) (cur - section_size - sizeof(int)), CF_SEEK_SET);
cfwrite_int((int) section_size, _cfp);
// go back to previous location for next section
cfseek(_cfp, (int) cur, CF_SEEK_SET);
}
}
void pilot::BinaryFileHandler::endWritingSections() {
Assertion(_writingSections, "Section writing ended while not writing sections!");
_writingSections = false;
}
void pilot::BinaryFileHandler::startArrayWrite(const char*, size_t size, bool short_index) {
if (short_index) {
cfwrite_ushort((short)size, _cfp);
} else {
cfwrite_int((int)size, _cfp);
}
}
void pilot::BinaryFileHandler::endArrayWrite() {
// Nothing to do here for the binary version
}
void pilot::BinaryFileHandler::flush() {
cflush(_cfp);
}
std::int8_t pilot::BinaryFileHandler::readByte(const char*) {
return cfread_char(_cfp);
}
std::uint8_t pilot::BinaryFileHandler::readUByte(const char*) {
return cfread_ubyte(_cfp);
}
std::int16_t pilot::BinaryFileHandler::readShort(const char*) {
return cfread_short(_cfp);
}
std::int32_t pilot::BinaryFileHandler::readInt(const char*) {
return cfread_int(_cfp);
}
std::uint32_t pilot::BinaryFileHandler::readUInt(const char*) {
return cfread_uint(_cfp);
}
float pilot::BinaryFileHandler::readFloat(const char*) {
return cfread_float(_cfp);
}
SCP_string pilot::BinaryFileHandler::readString(const char*) {
return cfread_string_len(_cfp);
}
void pilot::BinaryFileHandler::readString(const char*, char* dest, size_t max_size) {
cfread_string_len(dest, (int) max_size, _cfp);
}
void pilot::BinaryFileHandler::beginSectionRead() {
// Everything is handled in nextSection
}
bool pilot::BinaryFileHandler::hasMoreSections() {
return !cfeof(_cfp);
}
Section pilot::BinaryFileHandler::nextSection() {
Assertion(!_in_array, "nextSection() may not be called in an array!");
if (_section_start_pos != INVALID_SIZE && _section_end_pos != INVALID_SIZE) {
cf_set_max_read_len(_cfp, 0);
// There was a previous section
auto current = (size_t)cftell(_cfp);
if (current != _section_end_pos) {
mprintf(("PLR => WARNING: Advancing to the next section. " SIZE_T_ARG " bytes were skipped!\n", _section_end_pos - current));
cfseek(_cfp, (int)_section_end_pos, CF_SEEK_SET);
}
_section_start_pos = INVALID_SIZE;
_section_end_pos = INVALID_SIZE;
}
auto section_id = cfread_ushort(_cfp);
auto size = cfread_uint(_cfp);
if (size == 0) {
return Section::Invalid;
}
_section_start_pos = (size_t)cftell(_cfp);
_section_end_pos = _section_start_pos + size;
cf_set_max_read_len(_cfp, size);
return static_cast<Section>(section_id);
}
void pilot::BinaryFileHandler::endSectionRead() {
_section_start_pos = INVALID_SIZE;
_section_end_pos = INVALID_SIZE;
}
size_t pilot::BinaryFileHandler::startArrayRead(const char*, bool short_index) {
Assertion(!_in_array, "Array nesting is not supported!");
_in_array = true;
if (short_index) {
return (size_t) cfread_short(_cfp);
} else {
return (size_t) cfread_int(_cfp);
}
}
void pilot::BinaryFileHandler::nextArraySection() {
Assertion(_in_array, "nextArraySection() may only be called in an array!");
// Nothing to do here in the binary version
}
void pilot::BinaryFileHandler::endArrayRead() {
Assertion(_in_array, "Array ended while not reading array!");
_in_array = false;
}
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