FreeBSD Manual Pages
Tcl_GetOpenFile(3) Tcl Library Procedures Tcl_GetOpenFile(3) ________________________________________________________________________________ NAME Tcl_GetOpenFile - Return a FILE* for a channel registered in the given in- terpreter (Unix only) SYNOPSIS #include <tcl.h> int Tcl_GetOpenFile(interp, chanID, write, checkUsage, filePtr) ARGUMENTS Tcl_Interp *interp (in) Tcl interpreter from which file handle is to be obtained. const char *chanID (in) String identifying channel, such as stdin or file4. int write (in) Non-zero means the file will be used for writing, zero means it will be used for reading. int checkUsage (in) If non-zero, then an error will be gen- erated if the file was not opened for the access indicated by write. ClientData *filePtr (out) Points to word in which to store pointer to FILE structure for the file given by chanID. ________________________________________________________________________________ DESCRIPTION Tcl_GetOpenFile takes as argument a file identifier of the form returned by the open command and returns at *filePtr a pointer to the FILE structure for the file. The write argument indicates whether the FILE pointer will be used for reading or writing. In some cases, such as a channel that con- nects to a pipeline of subprocesses, different FILE pointers will be re- turned for reading and writing. Tcl_GetOpenFile normally returns TCL_OK. If an error occurs in Tcl_GetOpenFile (e.g. chanID did not make any sense or checkUsage was set and the file was not opened for the access specified by write) then TCL_ERROR is returned and the interpreter's result will con- tain an error message. In the current implementation checkUsage is ignored and consistency checks are always performed. Note that this interface is only supported on the Unix platform. KEYWORDS channel, file handle, permissions, pipeline, read, write Tcl 8.0 Tcl_GetOpenFile(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | KEYWORDS
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=Tcl_GetOpenFile.tcl86&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>