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ASSEMBLY & COMPILE TOOLS/PLM VAX COMPILER/plmvax/open.for

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+C***********************************************************************
+C
+C                               OPEN.FOR
+C
+C
+C		D I S C L A I M E R   N O T I C E		      
+C		-------------------   -----------
+C
+C  This document and/or portions of the material and data furnished
+C  herewith, was developed under sponsorship of the U. S. Government.
+C  Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
+C  University, nor their employees, nor their respective contractors,
+C  subcontractors, or their employees, makes any warranty, express or
+C  implied, or assumes any liability or responsibility for accuracy,
+C  completeness or usefulness of any information, apparatus, product
+C  or process disclosed, or represents that its use will not infringe
+C  privately-owned rights.  Mention of any product, its manufacturer,
+C  or suppliers shall not, nor is it intended to, imply approval, dis-
+C  approval, or fitness for any particular use.  The U. S. and the
+C  University at all times retain the right to use and disseminate same
+C  for any purpose whatsoever.  Such distribution shall be made by the
+C  National Energy Software Center at the Argonne National Laboratory
+C  and only subject to the distributee furnishing satisfactory proof
+C  that he has a valid license from the Intel Corporation in effect.
+C
+C
+C-----------------------------------------------------------------------
+C
+C    This module of the PL/M-VAX compiler contains routines used to
+C    open input and output files.  A 'USEROPEN' procedure is invoked
+C    when an input file is opened to allow access to the VFC line
+C    numbers created by text editors.
+C
+C-----------------------------------------------------------------------
+C		R E V I S I O N   H I S T O R Y
+C
+C    20OCT81  Alex Hunter  1. Added disclaimer notice. (V5.4)
+C    04FEB82  Alex Hunter  1. Change name of useropen procedure
+C			      and its common block. (V6.6)
+C
+C-----------------------------------------------------------------------
+      SUBROUTINE OPEN_SOS_FILE(UNIT,FILE_STRING)
+      INCLUDE 'PLMCOM.FOR/NOLIST'
+      EXTERNAL XQ_GET_CNTRL_FLD
+      BYTE FILE_STRING(0:45)
+      INTEGER*2 W_LINE_NUMBER(0:99)
+      COMMON /XQ_LINE_SEQS/ W_LINE_NUMBER
+ 
+      FILE_STRING(FILE_STRING(0)+1)=0
+      W_LINE_NUMBER(UNIT)=-1
+      I=1
+      IF (FILE_STRING(1).EQ.':') I=2
+ 
+      OPEN(UNIT=UNIT,FILE=FILE_STRING(I),STATUS='OLD',READONLY,
+     #     USEROPEN=XQ_GET_CNTRL_FLD,ERR=99)
+      RETURN
+ 
+99    IF (PRINT_FLAG) THEN
+         CALL ADVANCE_ONE_LINE
+         WRITE(LST,1000) (FILE_STRING(I),I=1,FILE_STRING(0))
+      ENDIF
+      IF (.NOT.LISTING_TO_TERMINAL) THEN
+         CALL TYPE_LAST_SOURCE_LINE
+         WRITE(7,1000) (FILE_STRING(I),I=1,FILE_STRING(0))
+      ENDIF
+1000  FORMAT(' **** Input File Not Found: ',99A1)
+      STOP 'COMPILATION ABORTED'
+ 
+C----------------------------------
+      ENTRY OPEN_OUTPUT_FILE(UNIT,FILE_STRING)
+C----------------------------------
+      FILE_STRING(FILE_STRING(0)+1)=0
+      I=1
+      IF (FILE_STRING(1).EQ.':') I=2
+ 
+      OPEN(UNIT=UNIT,FILE=FILE_STRING(I),STATUS='NEW')
+ 
+      RETURN
+      END