hb_P

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• hb_PathJoin(<cPathAbsolute>, <cPathRelative>) → cResultPath
  attempts to, safely, join the given paths to form a unified one.
  If <cPathRelative> is not string the returned value is null string ""
  otherwise,
  returns: <cPathRelative> when it includes a drive letter or starts with a path delimiter (e.g. :\/) or when <cPathAbsolute> is empty or not path or not string;
  otherwise,
  returns: <cPathAbsolute> properly joined with the <cPathRelelative> at the end. Both paths should be ending with path-separators, in order to be joined correctly. (to ensure this, use hb_DirSepAdd() if needed).

• hb_PIsByRef( <nParam> ) → lIsByRef
  returns .T. if the nParam is passed by reference.

• hb_PRead( <nPipeHandle>, <@cBuffer>, [<nBytes>], [<nTimeOut>] ) → nBytesRead
  It can be used for unblocking read from pipes, i.e. using handles returned by hb_processOpen() function. <nPipeHandle> is pipe read handle, <cBuffer> is string variable passed by reference with read buffer, <nBytes> is maximum number of bytes which can be read, <nTimeOut> is timeout in milliseconds to wait for data to read;
  this function returns when at least one byte can be read. Returned <nBytesRead> is number of bytes read from the pipe. On error return -1.

• hb_processClose( <hProcess> , [lGentle] ) → lSuccess
  closes an opened process.

• hb_processOpen( <cCommand>, [ @<cStdIn> ], [ @<cStdOut> ], [ @<cStdErr> ], [ <lDetach> ], [@PID] ) → hProcess

• hb_ProcessRun( <cCommand>, [ <cStdIn> ], [ @<cStdOut> ], [ @<cStdErr> ], [ <lDetach> ] ) → nResult

• hb_processValue( <hProcess> , [lWait] ) → nStatus

• hb_ProgName() → cExeName
  returns the executable program name.

• hb_ps() → OSpathSepator
  returns the character used as path separator; usually backslash \ on Windows, slash / on *nixes.

• hb_PValue( <nParam> [, <uNewValue> ] ) → uValue
  returns the value passed in the <nParam> parameter and optionally assigns a new value to it. It returns the current (not the original passed) parameter value.

• hb_PWrite( <nPipeHandle>, <cBuffer>, [<nBytes>], [<nTimeOut>] ) → nBytesWritten

TODO: hb_PathNormalize(), hb_PathRelativize(), hb_PCodeVer()

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