# This file belongs to the CEP package | Ten plik nale/zy do pakietu CEP # This package is public domain | Pakiet stanowi dobro powszechne # For more info see `0CEP_LIC.ENG' | Wi/ecej informacji w ,,0CEP_LIC.POL'' # =========================================================================== # E: "CEP filtered EPS" --> "EPS" converter # input - input file name # OUTF - output file name # TMPSX - temporary PostScript file name # # P: Konwerter "CEP filtered EPS" --> "EPS" # wej/scie - nazwa pliku konwertowanego # OUTF - nazwa pliku wyj/sciowego # TMPSX - nazwa tymczasowego pliku PostScriptowego BEGIN {# preparing temporary files | przygotowywanie plik/ow tymczasowych ver_no=1.03 gs_abort="2 2 .quit" chop_EOD=1 if (TMPSX=="") TMPSX="tmp.psx" flag="begin" } # check carefully whether the file to be processed was created by CEP # sprawd/xmy staranne czy mamy do czynienia z plikiem stworzonym przez CEP-a {l=$0 "\n"} # l is a candidate for a prolog line flag~"begin" && /^%%Creator: CEP/ {flag="cep"; l=""} # ignore CEP comment flag~"cep" && /^%UNCEPInfo:/ && NF==5 { # store CEP data, ignore CEP comment pre_lines=0+$2; buff_num=0+$3; buff_len=0+$4; pos_lines=0+$5 flag="uncep"; l="" } flag~"uncep" && /^\/_fltrd_file currentfile .+ \/_read_string .+ def$/ { # store CEP decoding scheme, ignore CEP line decodeline=$0; flag="good"; l="" } {prolog=prolog l} # lengthen prolog flag!~"uncep|good" && /^[^%]/ {exit} # emergency exit (CEP comment not found # in DSC comment block) flag~"uncep|good" && NR==pre_lines {exit} # exit after prolog END { # error handling | obs/luga b/l/ed/ow if (flag!~"good") errmessage("not a CEP file",1) if (!is_A85() && !is_HEX()) errmessage("CEP file was modified (strange coding), can't uncompress",4) printf "UNCEP ver. " ver_no ", decoding:" if (is_A85()) printf " A85" if (is_HEX()) printf " Hex" if (is_LZW()) printf ", LZW" if (is_RLE()) printf ", RLE" if (is_ZIP()) printf ", Flate" print "" # restore preamble of EPS file # odtworzenie preambu/ly pliku EPS if (gsub(/_fltrd_file/,"currentfile",prolog)==0) errmessage("CEP file was modified, can't uncompress",4) if (gsub(/_read_string/,"readhexstring",prolog)==0) errmessage("CEP file was modified, can't uncompress",4) gsub(/%/,"%%",prolog) # neutralizing printf | podmiana dla printf # WRITE PostScript ENCODING PROGRAM | TWORZENIE PROGRAMU Postscript-owego out_ps("(" ps_fname(OUTF) ") (w) file /w_file exch def") out_ps("(" ps_fname(FILENAME) ") (r) file /r_file exch def") out_ps("/l_string 255 string def") out_ps("/p_string 4096 string def") out_ps("/b_string " buff_len " string def") out_ps("/flushclose {dup flushfile closefile} def") # copy preamble | przepisywanie preambu/ly out_ps(pre_lines " {r_file l_string readline pop pop} repeat") out_ps(pre_lines-3 " {currentfile l_string readline pop") out_ps("w_file exch writestring w_file (\\n) writestring} repeat") out_ps_block(prolog) out_ps("%--- PROLOG END | KONIEC PROLOGU") # prepare decoding | przygotowywanie filtr/ow dekoduj/acych if (is_A85()) out_ps("r_file /ASCII85Decode filter") if (is_HEX()) out_ps("r_file /ASCIIHexDecode filter") if (is_LZW()) out_ps("dup /LZWDecode filter") if (is_RLE()) out_ps("dup /RunLengthDecode filter") if (is_ZIP()) out_ps("dup /FlateDecode filter") out_ps("/d_file exch def") if (chop_EOD) {# remove EOD mark out_ps("{not {dup length 1 sub 0 exch getinterval} if") out_ps(" w_file exch writestring p_string}") } else out_ps("w_file") out_ps("/ASCIIHexEncode filter") # loop decoding the EPS file | p/etla dekoduj/aca plik EPS out_ps(buff_num " {dup d_file b_string") out_ps(" readstring pop writestring} repeat") out_ps("flushclose d_file closefile") if (is_LZW() || is_RLE() || is_ZIP()) out_ps("closefile") # copy postamble | przepisanie postambu/ly out_ps(pos_lines+1 " {r_file l_string readline pop") out_ps("w_file exch writestring w_file (\\n) writestring} repeat") out_ps("w_file flushclose r_file closefile quit") printf "." } function ps_fname(s) {gsub(/\\/,"/",s); return(s)} function out_ps(s) {print s > TMPSX} function out_ps_block(block) {printf block > TMPSX} function out_ps_errorhandler() { out_ps("/errq {" gs_abort "} def") out_ps("errordict begin ") out_ps("/ioerror {(\\010!Input/Output error occurred. (Disk full?)\\n\\007)") out_ps(" print errq} def") out_ps("/handleerror {$error begin (Something went wrong) print") out_ps(" (\\n Error: ) print errorname 255 string cvs print") out_ps(" (\\n\\007) print end errq} def") out_ps("end") # out_ps("systemdict /resourcestatus known not") out_ps("{(\\010!This version of Ghostscript doesn't support required Level 2 features\\n\\007)") out_ps(" print quit} if") if (is_A85()) check_filter("ASCII85Decode", "ASCII85Decode filter") if (is_HEX()) check_filter("ASCIIHexDecode", "ASCIIHexDecode filter") if (is_LZW()) check_filter("LZWDecode", "LZWDecode filter") if (is_RLE()) check_filter("RunLengthDecode", "RunLengthDecode filter") if (is_ZIP()) check_filter("FlateDecode", "FlateDecode filter") } function check_filter(name, expl) { out_ps("/" name " /Filter resourcestatus {pop pop}") out_ps("{(\\010!This version of Ghostscript doesn't support " expl "\\n\\007)") out_ps(" print errq} ifelse") } function errmessage(errname, errnum) { print "UNCEP ERROR:", errname "\007"; exit(errnum) } # determine file decoding method | ustalanie sposobu dekodowania pliku function is_A85() {return (decodeline~/\/ASCII85Decode/)} function is_HEX() {return (decodeline~/\/ASCIIHexDecode/)} function is_LZW() {return (decodeline~/\/LZWDecode/)} function is_RLE() {return (decodeline~/\/RunLengthDecode/)} function is_ZIP() {return (decodeline~/\/FlateDecode/)}