TFIn::TFIn(const TStr& FNm):
TSBase(FNm.CStr()), TSIn(FNm), FileId(NULL), Bf(NULL), BfC(0), BfL(0){
EAssertR(!FNm.Empty(), "Empty file-name.");
FileId=fopen(FNm.CStr(), "rb");
EAssertR(FileId!=NULL, "Can not open file '"+FNm+"'.");
Bf=new char[MxBfL]; BfC=BfL=-1; FillBf();
}
TZipIn::TZipIn(const TStr& FNm) : TSBase(), TSIn(), ZipStdoutRd(NULL), ZipStdoutWr(NULL), SNm(FNm.CStr()),
FLen(0), CurFPos(0), Bf(NULL), BfC(0), BfL(0) {
EAssertR(! FNm.Empty(), "Empty file-name.");
EAssertR(TFile::Exists(FNm), TStr::Fmt("File %s does not exist", FNm.CStr()).CStr());
FLen = 0;
// non-zip files not supported, need uncompressed file length information
// TODO: find the correct set of supported extensions
//if (FNm.GetFExt() != ".zip" && FNm.GetFExt() != ".gz") {
// printf("*** Error: file %s, compression format %s not supported\n", FNm.CStr(), FNm.GetFExt().CStr());
// EFailR(TStr::Fmt("File %s: compression format %s not supported", FNm.CStr(), FNm.GetFExt().CStr()).CStr());
//}
FLen = TZipIn::GetFLen(FNm);
// return for malformed files
if (FLen == 0) { return; } // empty file
#ifdef GLib_WIN
// create pipes
SECURITY_ATTRIBUTES saAttr;
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
// Create a pipe for the child process's STDOUT.
const int PipeBufferSz = 32*1024;
EAssertR(CreatePipe(&ZipStdoutRd, &ZipStdoutWr, &saAttr, PipeBufferSz), "Stdout pipe creation failed");
// Ensure the read handle to the pipe for STDOUT is not inherited.
SetHandleInformation(ZipStdoutRd, HANDLE_FLAG_INHERIT, 0);
#else
// no implementation needed
#endif
CreateZipProcess(GetCmd(FNm), FNm);
Bf = new char[MxBfL]; BfC = BfL=-1;
FillBf();
}
TFIn::TFIn(const TStr& FNm, bool& OpenedP):
TSIn(FNm), FileId(NULL), Bf(NULL), BfC(0), BfL(0){
EAssertR(!FNm.Empty(), "Empty file-name.");
FileId=fopen(FNm.CStr(), "rb");
OpenedP=(FileId!=NULL);
if (OpenedP){
Bf=new char[MxBfL]; BfC=BfL=-1; FillBf();}
}
int TZipIn::GetBf(const void* LBf, const TSize& LBfL){
int LBfS=0;
if (TSize(BfC+LBfL)>TSize(BfL)){
for (TSize LBfC=0; LBfC<LBfL; LBfC++){
if (BfC==BfL){FillBf();}
LBfS+=((char*)LBf)[LBfC]=Bf[BfC++];}
} else {
for (TSize LBfC=0; LBfC<LBfL; LBfC++){
LBfS+=(((char*)LBf)[LBfC]=Bf[BfC++]);}
}
return LBfS;
}
int TFIn::GetBf(const void* LBf, const int& LBfL){
int LBfS=0;
if (BfC+LBfL>BfL){
for (int LBfC=0; LBfC<LBfL; LBfC++){
if (BfC==BfL){FillBf();}
LBfS+=((char*)LBf)[LBfC]=Bf[BfC++];}
} else {
for (int LBfC=0; LBfC<LBfL; LBfC++){
LBfS+=(((char*)LBf)[LBfC]=Bf[BfC++]);}
}
return LBfS;
}
TFIn::TFIn(const TStr& FNm, bool& OpenedP, const bool IgnoreBOMIfExistsP):
TSBase(FNm.CStr()), TSIn(FNm), FileId(NULL), Bf(NULL), BfC(0), BfL(0){
EAssertR(!FNm.Empty(), "Empty file-name.");
FileId=fopen(FNm.CStr(), "rb");
OpenedP=(FileId!=NULL);
if (OpenedP){
Bf=new char[MxBfL]; BfC=BfL=-1; FillBf();
if (IgnoreBOMIfExistsP && BfL >= 3) {
// https://en.wikipedia.org/wiki/Byte_order_mark
if (Bf[0] == (char)0xEF && Bf[1] == (char)0xBB && Bf[2] == (char)0xBF)
BfC = 3;
}
}
}
// Sets BfN to the end of line or end of buffer. Reads more data, if needed.
// Returns 1, when an end of line was found, BfN is end of line.
// Returns 0, when an end of line was not found and more data is required,
// BfN is end of buffer.
// Returns -1, when an end of file was found, BfN is not defined.
int TZipIn::FindEol(int& BfN) {
char Ch;
if (BfC >= BfL) { // check for eof, read more data
if (Eof()) { return -1; }
FillBf();
}
while (BfC < BfL) {
Ch = Bf[BfC++];
if (Ch=='\n') { BfN = BfC-1; return 1; }
if (Ch=='\r' && Bf[BfC+1]=='\n') {
BfC++; BfN = BfC-2; return 1; }
}
BfN = BfC;
return 0;
}
// reads LBfL bytes into LBf
int TFIn::GetBf(const void* LBf, const TSize& LBfL){
int LBfS=0;
if (TSize(BfC+LBfL)>TSize(BfL)){
for (TSize LBfC=0; LBfC<LBfL; LBfC++){
if (BfC==BfL){
FillBf();
// we tried to fill a buffer (that is used in the next statement).
// the available buffer BfL therefore has to be non-empty
EAssertR(BfL > 0, "Unable to fill a buffer from " + GetSNm() + "'.");
}
LBfS+=((char*)LBf)[LBfC]=Bf[BfC++];}
} else {
for (TSize LBfC=0; LBfC<LBfL; LBfC++){
LBfS+=(((char*)LBf)[LBfC]=Bf[BfC++]);}
}
return LBfS;
}
TZipIn::TZipIn(const TStr& FNm, bool& OpenedP) : TSBase(), TSIn(), ZipStdoutRd(NULL), ZipStdoutWr(NULL), SNm(FNm.CStr()),
FLen(0), CurFPos(0), Bf(NULL), BfC(0), BfL(0) {
EAssertR(! FNm.Empty(), "Empty file-name.");
FLen = TZipIn::GetFLen(FNm);
OpenedP = TFile::Exists(FNm);
if (OpenedP) {
#ifdef GLib_WIN
SECURITY_ATTRIBUTES saAttr;
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
// Create a pipe for the child process's STDOUT.
EAssertR(CreatePipe(&ZipStdoutRd, &ZipStdoutWr, &saAttr, 0), "Stdout pipe creation failed");
// Ensure the read handle to the pipe for STDOUT is not inherited.
SetHandleInformation(ZipStdoutRd, HANDLE_FLAG_INHERIT, 0);
#else
// no implementation needed
#endif
CreateZipProcess(GetCmd(FNm.GetFExt()), FNm);
Bf = new char[MxBfL]; BfC = BfL=-1;
FillBf();
}
}
TZipIn::TZipIn(const TStr& FNm) : TSBase(FNm.CStr()), TSIn(FNm), ZipStdoutRd(NULL), ZipStdoutWr(NULL),
FLen(0), CurFPos(0), Bf(NULL), BfC(0), BfL(0) {
EAssertR(! FNm.Empty(), "Empty file-name.");
EAssertR(TFile::Exists(FNm), TStr::Fmt("File %s does not exist", FNm.CStr()).CStr());
FLen = TZipIn::GetFLen(FNm);
if (FLen == 0) { return; } // empty file
#ifdef GLib_WIN
// create pipes
SECURITY_ATTRIBUTES saAttr;
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
// Create a pipe for the child process's STDOUT.
const int PipeBufferSz = 32*1024;
EAssertR(CreatePipe(&ZipStdoutRd, &ZipStdoutWr, &saAttr, PipeBufferSz), "Stdout pipe creation failed");
// Ensure the read handle to the pipe for STDOUT is not inherited.
SetHandleInformation(ZipStdoutRd, HANDLE_FLAG_INHERIT, 0);
#else
// no implementation needed
#endif
CreateZipProcess(GetCmd(FNm), FNm);
Bf = new char[MxBfL]; BfC = BfL=-1;
FillBf();
}
