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cgfixps.pro
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cgfixps.pro
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; docformat = 'rst'
;
; NAME:
; cgFixPS
;
; PURPOSE:
; This program modifies an IDL-produced PostScript landscape mode file so that the output
; is right side up rather than upside down. In other words, it turns a so-called seascape
; file into an actual landscape file.
;
;******************************************************************************************;
; ;
; Copyright (c) 2011, by Fanning Software Consulting, Inc. All rights reserved. ;
; ;
; Redistribution and use in source and binary forms, with or without ;
; modification, are permitted provided that the following conditions are met: ;
; ;
; * Redistributions of source code must retain the above copyright ;
; notice, this list of conditions and the following disclaimer. ;
; * Redistributions in binary form must reproduce the above copyright ;
; notice, this list of conditions and the following disclaimer in the ;
; documentation and/or other materials provided with the distribution. ;
; * Neither the name of Fanning Software Consulting, Inc. nor the names of its ;
; contributors may be used to endorse or promote products derived from this ;
; software without specific prior written permission. ;
; ;
; THIS SOFTWARE IS PROVIDED BY FANNING SOFTWARE CONSULTING, INC. ''AS IS'' AND ANY ;
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ;
; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT ;
; SHALL FANNING SOFTWARE CONSULTING, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, ;
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED ;
; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ;
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ;
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ;
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ;
;******************************************************************************************;
;
;+
; This program modifies an IDL-produced PostScript landscape mode file so that the output
; is right side up rather than upside down. In other words, it turns a so-called seascape
; file into an actual landscape file. Files that are not currently in landscape mode will
; be ignored. Tested with single and multiple page PostScript output from IDL 7.0.1 and 7.1.
;
; The program requires the `Coyote Library <http://www.idlcoyote.com/documents/programs.php>`
; to be installed on your machine.
;
; :Categories:
; Graphics, Utilities
;
; :Params:
; in_filename: in, required, type=string
; The name of an IDL-produced PostScript file in landscape mode.
; out_filename: in, optional, type=string
; The name of the fixed output PostScript file. If not provided, the input
; file is overwritten. Overwritting assumes proper read/write permission in
; TEMP directory and in the directory where the input file is located.
;
; :Keywords:
; a4: in, optional, type=boolean, default=0
; Set this keyword if the PostScript file is using a A4 Europeran sized page.
; ledger: in, optional, type=boolean, default=0
; Set this keyword if the PostScript file is using a US ledger size (11 x 17 inch) page.
; legal: in, optional, type=boolean, default=0
; Set this keyword if the PostScript file is using a US legal size (8.5 x 14 inch) page.
; letter: in, optional, type=boolean, default=0
; Set this keyword if the PostScript file is using a US letter size (8.5 x 11 inch) page.
; pagetype: in, optional, type=string, default="Letter"
; A generic way to set the page size. A string of "LETTER", "LEDGER", "LEGAL", or "A4".
; quiet: in, optional, type=boolean, default=0
; Set this keyword to suppress error messages from the program.
; success: out, optional, type=boolean
; If this keyword is set to a named variable, then on output the variable will
; return a 1 if the operation was successful, and a 0 otherwise. Using this
; keyword also supresses the program's ability to "throw" an error. Informational
; messages are issued about program developments, but this program will allow the
; program caller to decide what to do with unsuccessful program completion.
;
; :Author:
; FANNING SOFTWARE CONSULTING::
; David W. Fanning
; 1645 Sheely Drive
; Fort Collins, CO 80526 USA
; Phone: 970-221-0438
; E-mail: [email protected]
; Coyote's Guide to IDL Programming: http://www.idlcoyote.com
;
; :History:
; Change History::
; Written by: David W. Fanning, 6 August 2009.
; Change to overwrite input file if output filename is not provided. 6 August 2009. DWF.
; Incorporated checks for non-landscape mode files and files that have already been fixed. 6 August 2009. DWF.
; Modified to fix multiple-page PostScript files and to work seamlessly with cgPS_Open output. 8 August 2009. DWF.
; Ran into a problem in which the PostScript file is stored in the directory pointed
; to by the IDL_TMPDIR environment variable. Now check to see if the input filename
; is the same as the output filename and make a change, if necessary. 22 July 2010. DWF.
; Retreated to standard error handling with cgErrorMsg as there are inevitable errors. 2 August 2010. DWF.
; Output file was created, even if not used. Now deleting file and issuing messages to
; explain why output file was not created. 1 November 2010. DWF.
; Added SUCCESS and QUIET keywords. 15 Novemember 2010. DWF.
; PostScript file structure changed in IDL 8. Made adjustment to find the
; PageBoundingBox line. 19 Dec 2010. DWF.
; Added a check for an input file with zero length. No fix required. Clean up and return. 1 July 2016. DWF.
; My check for a zero length file was faulty, because I was not opening the file before
; I checked its length. Fixed. 13 Nov 2016. DWF.
;
; :Copyright:
; Copyright (c) 2009-2016, Fanning Software Consulting, Inc.
;-
PRO cgFIXPS, in_filename, out_filename, $
A4=A4, $
LEDGER=ledger, $
LEGAL=legal, $
LETTER=letter, $
PAGETYPE=pagetype, $
QUIET=quiet, $
SUCCESS=success
Compile_Opt idl2
; Error handling.
IF Arg_Present(success) THEN BEGIN
Catch, theError
IF theError NE 0 THEN BEGIN
Catch, /CANCEL
success = 0
IF N_Elements(out_lun) NE 0 THEN Free_Lun, out_lun
IF N_Elements(in_lun) NE 0 THEN Free_Lun, in_lun
IF ~Keyword_Set(quiet) THEN Print, !Error_State.MSG
RETURN
ENDIF
ENDIF ELSE BEGIN
Catch, theError
IF theError NE 0 THEN BEGIN
Catch, /CANCEL
IF ~Keyword_Set(quiet) THEN ok = cgErrorMsg()
success = 0
IF N_Elements(out_lun) NE 0 THEN Free_Lun, out_lun
IF N_Elements(in_lun) NE 0 THEN Free_Lun, in_lun
RETURN
ENDIF
ENDELSE
; Assume success
success = 1
; Is there an input filename?
IF N_Elements(in_filename) EQ 0 THEN BEGIN
in_filename = Dialog_Pickfile(FILTER='*.ps', TITLE='Select PostScript file to repair.')
IF in_filename EQ "" THEN RETURN
ENDIF
; Is there an output filename?
IF N_Elements(out_filename) EQ 0 THEN BEGIN
root_name = cgRootName(in_filename, EXTENSION=ext)
out_filename = Filepath(ROOT_DIR=GetEnv('IDL_TMPDIR'), root_name + '_tmp.' + ext)
print_out = 1
no_output_filename = 1
ENDIF ELSE no_output_filename = 0
; The out_filename can be the same as the in_filename in some cases.
IF out_filename EQ in_filename THEN BEGIN
rootname = cgRootName(out_filename, DIRECTORY=outDir, EXTENSION=ext)
out_filename = FilePath(ROOT_DIR=outDir, rootname + '_tmp.' + ext)
ENDIF
; Open the output filename.
OpenW, out_lun, out_filename, /GET_LUN
; What kind of page is this?
IF N_Elements(pagetype) EQ 0 THEN BEGIN
IF Keyword_Set(A4) THEN pageType = 'A4'
IF Keyword_Set(legal) THEN pageType = 'LEGAL'
IF Keyword_Set(ledger) THEN pageType = 'LEDGER'
IF Keyword_Set(letter) THEN pageType = 'LETTER'
IF N_Elements(pageType) EQ 0 THEN pageType = 'LETTER'
ENDIF ELSE pageType = StrUpCase(pageType)
; Set the rotate/translate command appropriately.
CASE pageType OF
'LETTER': rtcmd = '180 rotate -612 -792 translate'
'A4': rtcmd = '180 rotate -595.28 -841.89 translate'
'LEGAL': rtcmd = '180 rotate -612 -1008 translate'
'LEDGER': rtcmd = '180 rotate -792 -1224 translate'
ELSE: Message, 'Unknown PageType: ' + pageType
ENDCASE
; Move along in the file until the end of the Prolog.
line = ""
count = 0
target = "void"
buffer = StrArr(100)
OpenR, in_lun, in_filename, /GET_LUN
; If the file size is 0, then there is nothing to fix. Clean up and exit with success.
IF (FStat(in_lun)).size EQ 0 THEN BEGIN
Free_lun, in_lun
Free_lun, out_lun
File_Delete, out_filename
;Print, 'Zero Length File Encountered...'
RETURN
ENDIF
; Move along in the file until the end of the Prolog.
line = ""
count = 0
target = "void"
buffer = StrArr(100)
WHILE target NE '%%EndProlog' DO BEGIN
ReadF, in_lun, line
buffer[count] = line
target = StrMid(line, 0, 11)
count = count + 1
IF count MOD 100 EQ 0 THEN buffer = [buffer, StrArr(100)]
ENDWHILE
; Read the next 10 lines all at once. If you have already processed
; this file, exit. But if you haven't write the buffer to the output file.
in_lines = StrArr(10)
ReadF, in_lun, in_lines
; Is this a landscape file? If not, out of here.
index = Where(in_lines EQ '%%PageOrientation: Landscape', landscape_cnt)
IF landscape_cnt EQ 0 THEN BEGIN
Free_Lun, in_lun
Free_Lun, out_lun
File_Delete, out_filename
Message, 'File not a landscape file. Exiting...', /Informational
RETURN
ENDIF
; Has this file already been mucked with? If so, out of here. If not, write
; the buffer to the output file.
IF StrMid(in_lines[1], 0, 10) EQ '180 rotate' THEN BEGIN
Free_Lun, in_lun
Free_Lun, out_lun
File_Delete, out_filename
Message, 'File is in the proper rotation. Exiting...', /Informational
RETURN
ENDIF ELSE BEGIN
FOR j=0,count-1 DO PrintF, out_lun, buffer[j]
ENDELSE
count = count + 10
; We are going to add an extra line in the output file.
out_lines = StrArr(11)
out_lines[0] = in_lines[0]
out_lines[2:10] = in_lines[1:9]
out_lines[1] = rtcmd
; Calculate the new bounding box boundaries.
bbox_line_num = Where(StrMid(in_lines, 0, 17) EQ '%%PageBoundingBox', bbox_count)
IF bbox_count EQ 0 THEN Message, 'Cannot find PageBoundingBox line in file.'
bbox = StrMid(in_lines[bbox_line_num[0]], 18)
x0 = 0
x1 = 0
y0 = 0
y1 = 0
ReadS, bbox, x0, y0, x1, y1
CASE pageType OF
'LETTER': BEGIN
lx = String(612 - x1, FORMAT='(I5)')
ly = String(792 - y1, FORMAT='(I5)')
ux = String(612 - lx, FORMAT='(I5)')
uy = String(792 - ly, FORMAT='(I5)')
END
'A4': BEGIN
lx = String(595.28 - x1, FORMAT='(I5)')
ly = String(841.89 - y1, FORMAT='(I5)')
ux = String(595.28 - lx, FORMAT='(I5)')
uy = String(841.89 - ly, FORMAT='(I5)')
END
'LEGAL': BEGIN
lx = String(612 - x1, FORMAT='(I5)')
ly = String(1008 - y1, FORMAT='(I5)')
ux = String(612 - lx, FORMAT='(I5)')
uy = String(1008 - ly, FORMAT='(I5)')
END
'LEDGER': BEGIN
lx = String(792 - x1, FORMAT='(I5)')
ly = String(1224 - y1, FORMAT='(I5)')
ux = String(792 - lx, FORMAT='(I5)')
uy = String(1224 - ly, FORMAT='(I5)')
END
ENDCASE
; Output the new boundaries.
out_lines[5] = '%%PageBoundingBox: ' + lx + ly + ux + uy
FOR j=0,10 DO PrintF, out_lun, out_lines[j]
; Output the rest of the file, looking for another "%%Page:" marker.
WHILE ~EOF(in_lun) DO BEGIN
ReadF, in_lun, line
PrintF, out_lun, line
IF StrMid(line, 0, 7) EQ '%%Page:' THEN BEGIN
IF Keyword_Set(A4) THEN BEGIN
PrintF, out_lun, rtcmd
ENDIF ELSE BEGIN
PrintF, out_lun, rtcmd
ENDELSE
ENDIF
ENDWHILE
; Clean up.
Free_lun, in_lun
Free_lun, out_lun
; If there was no output filename given, then we are going
; to replace the input file with the temporary output file.
IF no_output_filename THEN BEGIN
inputDir = File_Dirname(in_filename)
root_name = File_BaseName(in_filename)
; Can you write into the input directory?
IF File_Test(in_filename, /WRITE) EQ 0 THEN Message, 'Cannot write TEMPORARY file into input file directory.'
; Replace the input file with the temporary output file.
File_Delete, in_filename
File_Move, out_filename, in_filename
ENDIF
END