pyraf.irafexecute.IrafProcess

Class IrafProcess

IRAF process class

Instance Methods

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__init__(self, executable)
Start IRAF task executable.

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initialize(self, envdict)
Initialization: Copy environment variables to process

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appendEnv(self, msg)
Append environment variable set command to list

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run(self, task, pstdin=None, pstdout=None, pstderr=None)
Run the IRAF logical task (which must be in this executable)

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isAlive(self)
Returns true if process appears to be OK

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terminate(self)
Terminate the IRAF process (when process in normal end state)

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kill(self, verbose=1)
Kill the IRAF process (more drastic than terminate)

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writeString(self, s)
Convert ascii string to IRAF form and write to IRAF process

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readString(self)
Read IRAF string from process and convert to ascii string

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write(self, data)
write binary data to IRAF process in blocks of <= 4096 bytes

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read(self)
Read binary data from IRAF pipe

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slave(self)
Talk to the IRAF process in slave mode.

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_scanErrno(self, msg)

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setStdio(self)
Set self.stdin/stdout based on current state

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par_get(self, mcmd)

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par_set(self, mcmd)

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xmit(self)
Handle xmit data transmissions

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xfer(self)
Handle xfer data requests

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chanbytes(self)
Parse xmit(chan,nbytes) and return integer tuple

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executeClCommand(self)
Execute an arbitrary CL command

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run(self, task, pstdin=None, pstdout=None, pstderr=None)

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Run the IRAF logical task (which must be in this executable)

The IrafTask object must have these methods:

getName(): return the name of the task getParam(param): get parameter value setParam(param,value): set parameter value getParObject(param): get parameter object

slave(self)

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Talk to the IRAF process in slave mode. Raises an IrafProcessError if an error occurs.

setStdio(self)

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Set self.stdin/stdout based on current state

If in graphics mode, I/O is done through status line. Else I/O is done through normal streams.

chanbytes(self)

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Parse xmit(chan,nbytes) and return integer tuple

Assumes first 5 characters have already been checked