cplai@daisy.UUCP (Chung-Pang Lai) (12/13/88)
This posting is a debugged version of a2ps script by Mr. Kirshenbaum of Stanford. His original was posted in May 88. The original posting includes 4 different files: a invocation sh script, a .awk file, a .sed file and of course the .ps PostScript prolog. Four separate files introduce maintenance problems. When you move these around in your bin directories, if you miss one, the whole thing fails. Hence we merged all four files into one script. No more worries when you move it around! Besides, there are bug fix and performance enhancement. If you like the original, you'd like this better. I enjoy sharing what I know about PS, I hope someone will point out mistakes that I made. Code reviews lead to perfection! :-) I might have missed later posting from Mr. Kirshenbaum. The following is based on his first original only. If anyone has Mr. Kirshenbaum's later enhancements, please e-mail me a copy. > From: evan@csli.STANFORD.EDU (Evan Kirshenbaum) > Subject: Ascii to PostScript conversion > Date: 25 May 88 18:56:08 GMT > Message-ID: <4052@csli.STANFORD.EDU> > Organization: Center for the Study of Language and Information, Stanford U. > Ok, folk, the initial response has been sufficient to warrant posting > the code to the net. > To use, just say > a2ps file1 file2 ... > This produces output suitable for piping through lpr to a PostScript > printer. Since then, Mr. B.G. of U. of Colorado posted a bug fix to the PS code. > From: csutest@sigi.Colorado.EDU (Test login per Dave ) > Subject: bug in a2ps utility > Message-ID: <6504@sigi.Colorado.EDU> > Date: 6 Jun 88 21:59:34 GMT > Organization: University of Colorado, Boulder > The bug symptom limits the number of pages to be printed > to less than 10. The reason is that the number-to-string conversion function > (cvs) is trying to store too large of a source number into too small of a > destination string yielding a rangecheck error. The fix is to provide a large > enough buffer for the destination string as follows in the diff log: > [ partial fix by B.G. deleted ] > ---------------------------------------------------------------------------- > hope this is helpful, > B.G. B.G. caught one bug which occurs whenever the "page" number reaches 2 digits. He fixed the problem by placing a /pstr 20 string def in front of the statement /pnum pagenum pstr cvs def inside the procedure /printheader. This fix works, but have a problem. Each time the /printheader procedure is called, a string of 20 bytes is allocated. If you are printing thousand of pages, gradually, the VM will be fragmented and totally consumed. Furthermore, B.G. didn't catch another identical bug which aborts the printing whenever the "sheet" number reaches 2 digits. We fixed that. We also used the format { } bind def to force early name binding in all the procedures. Supposedly, the binding will eliminate name lookups for the operators in the procedures when PS interpretes them. And hence, a boost in performance. We have not run any benchmark. If anyone have time to compare the speed of the two versions, please let me know the result. --Cut-Here----Cut-Here----Cut-Here----Cut-Here----Cut-Here----Cut-Here-- #! /bin/sh # File: csli:/user/evan/bin/a2ps # Created: Wed May 25 11:32:18 1988 by evan@csli (Evan Kirshenbaum) # Version: 1.0(1) # Description: Convert files from ascii to PostScript. # Usage: a2ps file1 file2 ... # Writes to standard output (I generally pipe through # lpr). Files are prepared for printing landscape, two to # a page, boxed. Header for each page has the format: # Print-Time File-Name Page-Number # where page-number starts at 1 for each file. Each # sheet in the batch is also numbered in the lower # right-hand corner. # # Customizability will be included soon. # # Requires 'expand' (change tabs to spaces) in the search # path. # # Edit History: # 11/29/88 pkl@daisy Changed to /bin/sh and rolled all # PS/awk/sed scripts into one shell # for easier maintainence. # Generate PostScript prologue cat << !!END!!OF!!PS!!PROLOGUE!! %! PostScript Source Code % File: csli:/user/evan/bin/a2ps.ps % Created: Wed May 25 11:22:04 1988 by evan@csli (Evan Kirshenbaum) % Version: 1.0(1) % Description: PostScript prolog for a2ps ascii to PostScript program. % % Edit History: % 11/29/88 cplai@daisy added pnumbuf to allow printing of % 10 or more pages /xdef {exch def} bind def /inch {72 mul} bind def /getfont {exch findfont exch scalefont} bind def /filenamesize 12 def /filenamefont /Helvetica-Bold filenamesize getfont def /linesperpage 66 def /datesize filenamesize 2 sub def /datefont /Helvetica datesize getfont def /headersize filenamesize 4 add def /bodysize 6.8 def /bodyfont /Courier bodysize getfont def /sidemargin 4 def /topmargin 4 def /pagewidth bodyfont setfont (0) stringwidth pop 80 mul sidemargin dup add add def /pageheight bodysize linesperpage mul topmargin dup add add headersize add def /uppery 8.5 inch pageheight add 2 div def /upperx [ 11 inch pagewidth 2 mul sub 3 div dup 2 mul pagewidth add ] def /pnumbuf 10 string def /endpage { pageside 1 eq { /pageside 0 def numberpage copypage erasepage /sheet sheet 1 add def } { /pageside 1 def } ifelse /pagenum pagenum 1 add def } bind def /numberpage { 11 inch upperx 0 get sub sidemargin add 8.5 inch uppery sub headersize sub moveto datefont setfont sheet pnumbuf cvs show } bind def /newfile { /filename xdef /pagenum 1 def } bind def /cleanup { pageside 1 eq {numberpage showpage} if } bind def /startdoc { 8.5 inch 0 inch translate 90 rotate /pageside 0 def /sheet 1 def } bind def /startpage { printheader printborder upperx pageside get sidemargin add uppery topmargin sub bodysize sub headersize sub moveto bodyfont setfont } bind def /s { gsave show grestore 0 bodysize neg rmoveto } bind def /printheader { upperx pageside get uppery headersize sub 1 add moveto datefont setfont gsave sidemargin 2 rmoveto date show grestore gsave /pnum pagenum pnumbuf cvs def pagewidth sidemargin sub pnum stringwidth pop sub (Page ) stringwidth pop sub 3 rmoveto (Page ) show pnum show grestore gsave filenamefont setfont pagewidth filename stringwidth pop sub 2 div 2 rmoveto filename show grestore } bind def /printborder { upperx pageside get uppery moveto gsave pagewidth 0 rlineto 0 pageheight neg rlineto pagewidth neg 0 rlineto closepath stroke grestore 0 headersize neg rmoveto pagewidth 0 rlineto stroke } bind def !!END!!OF!!PS!!PROLOGUE!! # Define current date and time and start document date +"/date (%d %h 19%y %r) def" echo "startdoc" # Process each file on the command line, take standard input # if there is no arguments on the command line if [ $# -eq 0 ]; then list=- else list="$*" fi for i in $list do if [ $i = "-" ]; then echo "(stdin) newfile" else echo "($i) newfile" fi cat $i | expand | sed 's/[\\()]/\\&/g' \ | awk 'BEGIN { line=0; print "startpage" } (line>65 || $0~/^ /) { line=0; print "endpage startpage" } $0~/^ *$/ { next } { print "(" $0 ") s"; line++ } END {print "endpage"}' done echo "cleanup" -- .signature under construction ... {cbosgd,fortune,hplabs,seismo!ihnp4,ucbvax!hpda}!nsc!daisy!cplai C.P. 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