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#include "sdsl/sfstream.hpp"
#include "sdsl/util.hpp"
#include <iostream>
namespace sdsl
{
// IMPLEMENTATION OF OSFSTREAM
osfstream::osfstream() : std::ostream(nullptr)
{
this->init(m_streambuf);
}
osfstream::osfstream(const std::string& file, std::ios_base::openmode mode) : std::ostream(nullptr)
{
this->init(m_streambuf);
open(file, mode);
}
osfstream::buf_ptr_type
osfstream::open(const std::string& file, std::ios_base::openmode mode)
{
delete m_streambuf;
m_streambuf = nullptr;
m_file = file;
std::streambuf* success = nullptr;
if (is_ram_file(file)) {
m_streambuf = new ram_filebuf();
success = ((ram_filebuf*)m_streambuf)->open(m_file, mode);
} else {
m_streambuf = new std::filebuf();
success = ((std::filebuf*)m_streambuf)->open(m_file, mode);
}
if (success) {
this->clear();
} else {
this->setstate(std::ios_base::failbit);
delete m_streambuf;
m_streambuf = nullptr;
}
this->rdbuf(m_streambuf);
return m_streambuf;
}
bool
osfstream::is_open()
{
if (nullptr == m_streambuf)
return false;
if (is_ram_file(m_file)) {
return ((ram_filebuf*)m_streambuf)->is_open();
} else {
return ((std::filebuf*)m_streambuf)->is_open();
}
}
void
osfstream::close()
{
bool fail = false;
if (nullptr == m_streambuf) {
fail = true;
} else {
if (is_ram_file(m_file)) {
fail = !((ram_filebuf*)m_streambuf)->close();
} else {
fail = !((std::filebuf*)m_streambuf)->close();
}
}
if (fail) this->setstate(std::ios::failbit);
}
osfstream::~osfstream()
{
delete m_streambuf; // streambuf closes the file on destruction
}
osfstream::operator voidptr()const
{
return m_streambuf;
}
osfstream&
osfstream::seekp(pos_type pos)
{
ios_base::iostate err = std::ios_base::iostate(std::ios_base::goodbit);
try {
if (!this->fail()) {
pos_type p = 0;
if (is_ram_file(m_file)) {
p = ((ram_filebuf*)m_streambuf)->pubseekpos(pos, std::ios_base::out);
} else {
p = ((std::filebuf*)m_streambuf)->pubseekpos(pos, std::ios_base::out);
}
if (p == pos_type(off_type(-1))) {
err |= ios_base::failbit;
this->setstate(err);
}
}
} catch (...) {
if (err) {
this->setstate(err);
}
}
return *this;
}
osfstream&
osfstream::seekp(off_type off, std::ios_base::seekdir way)
{
ios_base::iostate err = std::ios_base::iostate(ios_base::goodbit);
try {
if (!this->fail()) {
pos_type p = 0;
if (is_ram_file(m_file)) {
p = ((ram_filebuf*)m_streambuf)->pubseekoff(off, way, std::ios_base::out);
} else {
p = ((std::filebuf*)m_streambuf)->pubseekoff(off, way, std::ios_base::out);
}
if (p == pos_type(off_type(-1))) {
err |= ios_base::failbit;
this->setstate(err);
}
}
} catch (...) {
if (err) {
this->setstate(err);
}
}
return *this;
}
// IMPLEMENTATION OF ISFSTREAM
isfstream::isfstream() : std::istream(nullptr)
{
this->init(m_streambuf);
}
isfstream::isfstream(const std::string& file, std::ios_base::openmode mode) : std::istream(nullptr)
{
this->init(m_streambuf);
open(file, mode);
}
isfstream::buf_ptr_type
isfstream::open(const std::string& file, std::ios_base::openmode mode)
{
delete m_streambuf;
m_streambuf = nullptr;
m_file = file;
std::streambuf* success = nullptr;
if (is_ram_file(file)) {
m_streambuf = new ram_filebuf();
success = ((ram_filebuf*)m_streambuf)->open(m_file, mode);
} else {
m_streambuf = new std::filebuf();
success = ((std::filebuf*)m_streambuf)->open(m_file, mode);
}
if (success) {
this->clear();
} else {
this->setstate(std::ios_base::failbit);
delete m_streambuf;
m_streambuf = nullptr;
}
this->rdbuf(m_streambuf);
return m_streambuf;
}
bool
isfstream::is_open()
{
if (nullptr == m_streambuf)
return false;
if (is_ram_file(m_file)) {
return ((ram_filebuf*)m_streambuf)->is_open();
} else {
return ((std::filebuf*)m_streambuf)->is_open();
}
}
void
isfstream::close()
{
bool fail = false;
if (nullptr == m_streambuf) {
fail = true;
} else {
if (is_ram_file(m_file)) {
fail = !((ram_filebuf*)m_streambuf)->close();
} else {
fail = !((std::filebuf*)m_streambuf)->close();
}
}
if (fail) this->setstate(std::ios::failbit);
}
isfstream&
isfstream::seekg(pos_type pos)
{
ios_base::iostate err = std::ios_base::iostate(std::ios_base::goodbit);
try {
if (!this->fail()) {
pos_type p = 0;
if (is_ram_file(m_file)) {
p = ((ram_filebuf*)m_streambuf)->pubseekpos(pos, std::ios_base::in);
} else {
p = ((std::filebuf*)m_streambuf)->pubseekpos(pos, std::ios_base::in);
}
if (p == pos_type(off_type(-1))) {
err |= ios_base::failbit;
}
}
} catch (...) {
if (err) {
this->setstate(err);
}
}
return *this;
}
isfstream&
isfstream::seekg(off_type off, std::ios_base::seekdir way)
{
ios_base::iostate err = std::ios_base::iostate(ios_base::goodbit);
try {
if (!this->fail()) {
pos_type p = 0;
if (is_ram_file(m_file)) {
p = ((ram_filebuf*)m_streambuf)->pubseekoff(off, way, std::ios_base::in);
} else {
p = ((std::filebuf*)m_streambuf)->pubseekoff(off, way, std::ios_base::in);
}
if (p == pos_type(off_type(-1))) {
err |= ios_base::failbit;
}
}
} catch (...) {
if (err) {
this->setstate(err);
}
}
return *this;
}
std::streampos
isfstream::tellg()
{
ios_base::iostate err = std::ios_base::iostate(ios_base::goodbit);
pos_type p = pos_type(off_type(-1));
try {
if (!this->fail()) {
if (is_ram_file(m_file)) {
p = ((ram_filebuf*)m_streambuf)->pubseekoff(0, std::ios_base::cur);
} else {
p = ((std::filebuf*)m_streambuf)->pubseekoff(0, std::ios_base::cur);
}
if (p == pos_type(off_type(-1))) {
err |= ios_base::failbit;
}
}
} catch (...) {
if (err) {
this->setstate(err);
}
}
return p;
}
isfstream::~isfstream()
{
delete m_streambuf;
}
isfstream::operator voidptr()const
{
return m_streambuf; // streambuf closes the file on destruction
}
}// end namespace sdsl
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