PRO TEXTOPEN,PROGRAM,TEXTOUT=TEXTOUT, STDOUT = STDOUT, MORE_SET = more_set, $ SILENT = silent, WIDTH = width ;+ ; NAME: ; TEXTOPEN ; PURPOSE: ; Open a device specified by TEXTOUT with unit !TEXTUNIT ; EXPLANATION: ; Procedure to open file for text output. The type of output ; device (disk file or terminal screen) is specified by the ; TEXTOUT keyword or the (nonstandard) system variable !TEXTOUT. ; ; CALLING SEQUENCE: ; textopen, program, [ TEXTOUT =, /STDOUT, /SILENT, MORE_SET=, WIDTH= ] ; ; INPUTS: ; program - scalar string giving name of program calling textopen ; ; OPTIONAL INPUT KEYWORDS: ; TEXTOUT - Integer scalar (0-7) specifying output file/device to be ; opened (see below) or scalar string giving name of output file. ; If TEXTOUT is not supplied, then the (non-standard) system ; variable !TEXTOUT is used. ; /SILENT - By default, TEXTOPEN prints an informational message when ; opening a file for hardcopy output. Set /SILENT (or !QUIET) ; to suppress this message. ; /STDOUT - if this keyword is set and non-zero, then the standard output ; (unit = -1) is used for TEXTOUT=1 or TEXTOUT=2. The use ; of STDOUT has 2 possible advantages: ; (1) the output will appear in a journal file ; (2) Many Unix machines print spurious control characters when ; printing to /dev/tty. These characters are eliminated by ; setting /STDOUT ; ; The disadvantage of /STDOUT is that the /MORE option is not ; available. ; ; WIDTH - Specify line width for hardcopy output line wrapping (passed onto OPENW). ; ; OPTIONAL OUTPUT KEYWORD: ; MORE_SET - Returns 1 if the output unit was opened with /MORE. This ; occurs if (1) TEXTOUT = 1 and (2) the device is a tty, and ; (3) /STDOUT is not set. User can use the returned value ; of MORE_SET to determine whether to end output when user ; presses 'Q'. ; SIDE EFFECTS: ; The following dev/file is opened for output. Different effects ; occur depending whether the standard output is a GUI (Macintosh, ; Windows, Unix/IDLTool) or a TTY ; ; textout=0 Nowhere ; textout=1 if a TTY then TERMINAL using /more option ; otherwise standard (Unit=-1) output ; textout=2 if a TTY then TERMINAL without /more option ; otherwise standard (Unit=-1) output ; textout=3 .prt ; textout=4 laser.tmp ; textout=5 user must open file ; textout=7 same as 3 but text is appended to .prt ; file if it already exists. ; textout = filename (default extension of .prt) ; ; The unit to be opened is obtained with the procedure GET_LUN ; unless !TEXTOUT=5. The unit number is placed in system variable ; !TEXTUNIT. For !TEXTOUT=5 the user must set !TEXTUNIT to the ; appropriate unit number. ; ; NOTES: ; When printing to a TTY terminal, the output will *not* appear in an ; IDL JOURNAL session, unlike text printed with the PRINT command. ; ; NON-STANDARD SYSTEM VARIABLES: ; TEXTOPEN will automatically define the following system variables if ; they are not previously defined: ; ; DEFSYSV,'!TEXTOUT',1 ; DEFSYSV,'!TEXTUNIT',0 ; HISTORY: ; D. Lindler Dec. 1986 ; Keyword textout added, J. Isensee, July, 1990 ; Made transportable, D. Neill, April, 1991 ; Trim input PROGRAM string W. Landsman Feb 1993 ; Don't modify TEXTOUT value W. Landsman Aug 1993 ; Modified for MacOS I. Freedman April 1994 ; Modified for output terminals without a TTY W. Landsman August 1995 ; Added /STDOUT keyword W. Landsman April 1996 ; added textout=7 option, D. Lindler, July, 1996 ; Exit with RETURN instead of RETALL W. Landsman June 1999 ; In IDL V5.4 filepath(/TERMINAL) not allowed in the IDLDE WL August 2001 ; Added MORE_SET output keyword W.Landsman January 2002 ; Added /SILENT keyword W. Landsman June 2002 ; Define !TEXTOUT and !TEXTUNIT if needed. R. Sterner, 2002 Aug 27 ; Return Calling Sequence if no parameters supplied W.Landsman Nov 2002 ; Remove VMS specific code W. Landsman Sep 2006 ; Make sure MORE_SET is always defined W. Landsman Jan 2007 ; Added WIDTH keyword J. Bailin Nov 2010 ; Use V6.0 notation W. Landsman April 2011 ;- ;----------------------------------------------------------- On_Error,2 compile_opt idl2 if N_params() LT 1 then begin print,'Syntax - TEXTOPEN, program, [ TEXTOUT =, /STDOUT, /SILENT,' print,' MORE_SET=, WIDTH= ]' return endif defsysv,'!TEXTOUT',exists=ex ; Check if !TEXTOUT exists. if ex eq 0 then defsysv,'!TEXTOUT',1 ; If not define it. defsysv,'!TEXTUNIT',exists=ex ; Check if !TEXTUNIT exists. if ex eq 0 then defsysv,'!TEXTUNIT',0 ; If not define it. more_set = 0 ; ; Open proper unit. ; if N_elements( textout ) NE 1 then textout = !textout ;use default output dev. ; keywords for openw if n_elements(width) gt 0 then openw_keywords = {width: width} if size(textout,/tname) EQ 'STRING' then begin ;test if filename entered filename = textout j = strpos(filename,'.') ;test if file extension given if j lt 0 then filename = filename + ".prt" text_out = 6 endif else text_out = textout if TEXT_OUT eq 5 then begin if !TEXTUNIT eq 0 then begin print,' ' print,' You must set !TEXTUNIT to the desired unit number...' print,' ...see following example' print,' ' print,' OPENW, LUN, filename, /GET_LUN print,' !TEXTUNIT = LUN print,' DBPRINT... print,' print,' Action: returning' print,' ' return end return end stndout = fstat(-1) isatty = (stndout.isatty) && (~stndout.isagui) && $ (~keyword_set(STDOUT)) if isatty || (text_out GT 2) then begin if !TEXTUNIT GT 0 then free_lun,!TEXTUNIT get_lun,unit !TEXTUNIT = unit endif else !TEXTUNIT = -1 ;standard output more_set = (text_out EQ 1) && isatty case text_out of 1: if isatty then openw, !TEXTUNIT, filepath(/TERMINAL), /MORE, _extra=openw_keywords 2: if isatty then openw, !TEXTUNIT, filepath(/TERMINAL) , _extra=openw_keywords 3: begin oname = strlowcase( strtrim( PROGRAM,2) +'.prt') openw, !TEXTUNIT, oname, _extra=openw_keywords if ~keyword_set(SILENT) then $ message,'Output is being directed to a file ' + oname,/INFORM end 4: openw, !TEXTUNIT, 'laser.tmp', _extra=openw_keywords 6: begin openw,!TEXTUNIT,filename, _extra=openw_keywords if ~keyword_set(SILENT) then $ message,'Output is being directed to a file ' + filename,/INFORM end 7: begin oname = strlowcase(strtrim( PROGRAM,2) +'.prt') openw, !TEXTUNIT, oname, /append, _extra=openw_keywords if ~keyword_set(SILENT) then $ message,'Output is being appended to file ' + oname,/INFORM for i=0,3 do printf,!textunit,' ' ;added a couple of blank lines end 0: openw,!TEXTUNIT, strtrim(PROGRAM,2) + '.tmp',/DELETE, _extra=openw_keywords else: begin !textunit = 0 print,' ' print,' Invalid value for TEXTOUT =',TEXTOUT print,' ' print,' ...the possibilities are: print,' ' print,' textout=0 nowhere if isatty then begin print,' textout=1 terminal with /more print,' textout=2 terminal without /more endif else begin print,' textout=1 terminal print,' textout=2 terminal endelse print,' textout=3 file .prt print,' textout=4 file laser.tmp print,' textout=5 User supplied file print,' textout = filename (default extension of .prt) print,' textout=7 Same as 3 but append the file print,' ' print,' Action: returning print,' ' return end endcase return end ; textout