Modula-2 || Compiler & Tools || Library || Search Engine

Ulm's Modula-2 Library:
PipeIO

NAME

PipeIO - initiate I/O to/from a process

SYNOPSIS

FROM StdIO IMPORT FILE, MODE;



PROCEDURE Popen(VAR f: FILE; cmd: ARRAY OF CHAR; mode: MODE;
                buffered: BOOLEAN) : BOOLEAN;
PROCEDURE Pclose(f: FILE) : BOOLEAN;

DESCRIPTION

Popen creates a pipe between the calling process and the command to be executed. Cmd is a string containing a shell command line, mode specifies the I/O mode, either read for reading or write for writing, buffered flags if the stream has to be buffered. The resulting stream pointer will be returned in f.

A stream opened by Popen should be closed by Pclose, which waits for the associated process to terminate.

DIAGNOSTICS

Popen and Pclose return FALSE on failure.
Edited by: borchert, last change: 1997/02/25, revision: 1.2, converted to HTML: 1997/04/28

Modula-2 || Compiler & Tools || Library || Search Engine