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C*********
SUBROUTINE GRCTER(ICHAN)
INTEGER ICHAN
C---
C Close a previously opened channel.
C---
C ICHAN I The channel number to be closed
C---
CALL SYS$DASSGN(%val(ICHAN))
RETURN
END
INTEGER FUNCTION GROTER(CDEV, LDEV)
CHARACTER CDEV*(*)
INTEGER LDEV
C---
C Open a channel to the device specified by CDEV.
C---
C CDEV I The name of the device to be opened
C LDEV I Number of valid characters in device
C GROTER O The open channel number (-1 indicates an error)
C---
INTEGER ICHAN
C---
CALL SYS$ASSIGN(CDEV(:LDEV),ICHAN,,)
GROTER=ICHAN
RETURN
END
SUBROUTINE GRPTER(ICHAN, PROMPT, LPROM, CBUF, LBUF)
CHARACTER PROMPT*(*), CBUF*(*)
INTEGER ICHAN, LPROM, LBUF
C---
C revised 3-Jun-1997: use NOFILTR to pass DEL etc.
C---
INCLUDE '($IODEF)'
INTEGER IREAD
PARAMETER (IREAD= IO$M_PURGE + IO$M_NOFORMAT + IO$M_NOFILTR +
: IO$M_NOECHO + IO$M_TIMED + IO$_READPROMPT)
INTEGER ITIME
PARAMETER (ITIME=60)
INTEGER IQUAD0(2)
DATA IQUAD0/0,0/
C---
CALL SYS$QIOW(,%val(ICHAN),%val(IREAD),,,,
: %ref(CBUF),%val(LBUF),%val(ITIME),IQUAD0,
: %ref(PROMPT),%val(LPROM))
RETURN
END
C*********
SUBROUTINE GRWTER(ICHAN, CBUF, LBUF)
CHARACTER CBUF*(*)
INTEGER ICHAN, LBUF
C---
C Write LBUF bytes from CBUF to the channel ICHAN. Data is written
C with no formatting.
C---
C ICHAN I The channel number
C CBUF I Character array of data to be written
C LBUF I/O The number of bytes to write, set to zero on return
C---
INCLUDE '($IODEF)'
C---
CALL SYS$QIOW(,%val(ICHAN),
: %val(IO$_WRITEVBLK.OR.IO$M_NOFORMAT),,,,
: %ref(CBUF),%val(LBUF),,,,)
LBUF=0
RETURN
END
C*********
SUBROUTINE GRRTER(ICHAN, CBUF, LBUF)
CHARACTER CBUF*(*)
INTEGER ICHAN, LBUF
C---
C Read LBUF bytes from device assigned to channel ICHAN to CBUF.
C Previous unread data is purged. Data is read without format
C or echo.
C---
C ICHAN I The channel number
C CBUF O Character array of data read
C LBUF I/O The number of bytes to write, set to zero on return
C---
INCLUDE '($IODEF)'
INTEGER IREAD
PARAMETER (IREAD= IO$_TTYREADALL + IO$M_PURGE + IO$M_NOFORMAT +
: IO$M_NOECHO + IO$M_TIMED)
INTEGER ITIME
PARAMETER (ITIME=60)
INTEGER IQUAD0(2)
DATA IQUAD0/0,0/
C---
CALL SYS$QIOW(,%val(ICHAN),%val(IREAD),,,,
: %ref(CBUF),%val(LBUF),%val(ITIME),IQUAD0,,)
RETURN
END
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