[193] | 1 | #! /usr/bin/env python |
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| 2 | # -*- coding: ISO-8859-15 -*- |
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[191] | 3 | # |
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| 4 | # pkpgcounter : a generic Page Description Language parser |
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| 5 | # |
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[443] | 6 | # (c) 2003, 2004, 2005, 2006, 2007 Jerome Alet <alet@librelogiciel.com> |
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[463] | 7 | # This program is free software: you can redistribute it and/or modify |
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[191] | 8 | # it under the terms of the GNU General Public License as published by |
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[463] | 9 | # the Free Software Foundation, either version 3 of the License, or |
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[191] | 10 | # (at your option) any later version. |
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[463] | 11 | # |
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[191] | 12 | # This program is distributed in the hope that it will be useful, |
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | # GNU General Public License for more details. |
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| 16 | # |
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| 17 | # You should have received a copy of the GNU General Public License |
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[463] | 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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[191] | 19 | # |
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| 20 | # $Id$ |
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| 21 | # |
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[193] | 22 | |
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[357] | 23 | """This modules implements a page counter for PostScript documents.""" |
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| 24 | |
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[193] | 25 | import sys |
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[283] | 26 | import os |
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[193] | 27 | |
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[235] | 28 | import pdlparser |
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[283] | 29 | import inkcoverage |
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[193] | 30 | |
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[220] | 31 | class Parser(pdlparser.PDLParser) : |
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[193] | 32 | """A parser for PostScript documents.""" |
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[492] | 33 | totiffcommands = [ 'gs -sDEVICE=tiff24nc -dPARANOIDSAFER -dNOPAUSE -dBATCH -dQUIET -r"%(dpi)i" -sOutputFile="%(outfname)s" "%(infname)s"' ] |
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[527] | 34 | required = [ "gs" ] |
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[491] | 35 | openmode = "rU" |
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[220] | 36 | def isValid(self) : |
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[387] | 37 | """Returns True if data is PostScript, else False.""" |
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[522] | 38 | if self.firstblock.startswith("%!") or \ |
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| 39 | self.firstblock.startswith("\004%!") or \ |
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| 40 | self.firstblock.startswith("\033%-12345X%!PS") or \ |
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| 41 | ((self.firstblock[:128].find("\033%-12345X") != -1) and \ |
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| 42 | ((self.firstblock.find("LANGUAGE=POSTSCRIPT") != -1) or \ |
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| 43 | (self.firstblock.find("LANGUAGE = POSTSCRIPT") != -1) or \ |
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| 44 | (self.firstblock.find("LANGUAGE = Postscript") != -1))) or \ |
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| 45 | (self.firstblock.find("%!PS-Adobe") != -1) : |
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[252] | 46 | self.logdebug("DEBUG: Input file is in the PostScript format.") |
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[387] | 47 | return True |
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[220] | 48 | else : |
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[387] | 49 | return False |
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[220] | 50 | |
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[193] | 51 | def throughGhostScript(self) : |
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| 52 | """Get the count through GhostScript, useful for non-DSC compliant PS files.""" |
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[252] | 53 | self.logdebug("Internal parser sucks, using GhostScript instead...") |
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[527] | 54 | if self.isMissing(self.required) : |
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| 55 | raise pdlparser.PDLParserError, "The gs interpreter is nowhere to be found in your PATH (%s)" % os.environ.get("PATH", "") |
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[522] | 56 | infname = self.filename |
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[521] | 57 | command = 'gs -sDEVICE=bbox -dPARANOIDSAFER -dNOPAUSE -dBATCH -dQUIET "%(infname)s" 2>&1 | grep -c "%%HiResBoundingBox:" 2>/dev/null' |
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[491] | 58 | pagecount = 0 |
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[521] | 59 | fromchild = os.popen(command % locals(), "r") |
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[193] | 60 | try : |
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[491] | 61 | try : |
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[521] | 62 | pagecount = int(fromchild.readline().strip()) |
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[491] | 63 | except (IOError, OSError, AttributeError, ValueError), msg : |
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| 64 | raise pdlparser.PDLParserError, "Problem during analysis of Binary PostScript document : %s" % msg |
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| 65 | finally : |
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[521] | 66 | if fromchild.close() is not None : |
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| 67 | raise pdlparser.PDLParserError, "Problem during analysis of Binary PostScript document" |
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[273] | 68 | self.logdebug("GhostScript said : %s pages" % pagecount) |
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[193] | 69 | return pagecount * self.copies |
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| 70 | |
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| 71 | def natively(self) : |
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| 72 | """Count pages in a DSC compliant PostScript document.""" |
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| 73 | pagecount = 0 |
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[273] | 74 | self.pages = { 0 : { "copies" : 1 } } |
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[263] | 75 | oldpagenum = None |
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[252] | 76 | previousline = "" |
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[521] | 77 | notrust = False |
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| 78 | prescribe = False # Kyocera's Prescribe commands |
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| 79 | acrobatmarker = False |
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[444] | 80 | pagescomment = None |
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[491] | 81 | for line in self.infile : |
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| 82 | line = line.strip() |
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[321] | 83 | if (not prescribe) and line.startswith(r"%%BeginResource: procset pdf") \ |
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[323] | 84 | and not acrobatmarker : |
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[521] | 85 | notrust = True # Let this stuff be managed by GhostScript, but we still extract number of copies |
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[334] | 86 | elif line.startswith(r"%ADOPrintSettings: L") : |
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[521] | 87 | acrobatmarker = True |
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[314] | 88 | elif line.startswith("!R!") : |
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[521] | 89 | prescribe = True |
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[444] | 90 | elif line.startswith(r"%%Pages: ") : |
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| 91 | try : |
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[447] | 92 | pagescomment = max(pagescomment or 0, int(line.split()[1])) |
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[444] | 93 | except ValueError : |
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| 94 | pass # strange, to say the least |
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[272] | 95 | elif line.startswith(r"%%Page: ") or line.startswith(r"(%%[Page: ") : |
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[263] | 96 | proceed = 1 |
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| 97 | try : |
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[437] | 98 | # treats both "%%Page: x x" and "%%Page: (x-y) z" (probably N-up mode) |
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| 99 | newpagenum = int(line.split(']')[0].split()[-1]) |
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[263] | 100 | except : |
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[323] | 101 | notinteger = 1 # It seems that sometimes it's not an integer but an EPS file name |
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[263] | 102 | else : |
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[323] | 103 | notinteger = 0 |
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[263] | 104 | if newpagenum == oldpagenum : |
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| 105 | proceed = 0 |
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| 106 | else : |
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| 107 | oldpagenum = newpagenum |
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[323] | 108 | if proceed and not notinteger : |
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[263] | 109 | pagecount += 1 |
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[273] | 110 | self.pages[pagecount] = { "copies" : self.pages[pagecount-1]["copies"] } |
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[208] | 111 | elif line.startswith(r"%%Requirements: numcopies(") : |
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[193] | 112 | try : |
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[491] | 113 | number = int(line.split('(')[1].split(')')[0]) |
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[193] | 114 | except : |
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| 115 | pass |
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| 116 | else : |
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[273] | 117 | if number > self.pages[pagecount]["copies"] : |
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| 118 | self.pages[pagecount]["copies"] = number |
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[208] | 119 | elif line.startswith(r"%%BeginNonPPDFeature: NumCopies ") : |
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[193] | 120 | # handle # of copies set by some Windows printer driver |
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| 121 | try : |
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[491] | 122 | number = int(line.split()[2]) |
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[193] | 123 | except : |
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| 124 | pass |
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| 125 | else : |
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[273] | 126 | if number > self.pages[pagecount]["copies"] : |
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| 127 | self.pages[pagecount]["copies"] = number |
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[193] | 128 | elif line.startswith("1 dict dup /NumCopies ") : |
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| 129 | # handle # of copies set by mozilla/kprinter |
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| 130 | try : |
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[491] | 131 | number = int(line.split()[4]) |
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[193] | 132 | except : |
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| 133 | pass |
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| 134 | else : |
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[273] | 135 | if number > self.pages[pagecount]["copies"] : |
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| 136 | self.pages[pagecount]["copies"] = number |
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[389] | 137 | elif line.startswith("{ pop 1 dict dup /NumCopies ") : |
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| 138 | # handle # of copies set by firefox/kprinter/cups (alternate syntax) |
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| 139 | try : |
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[491] | 140 | number = int(line.split()[6]) |
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[389] | 141 | except : |
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| 142 | pass |
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| 143 | else : |
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| 144 | if number > self.pages[pagecount]["copies"] : |
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| 145 | self.pages[pagecount]["copies"] = number |
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[248] | 146 | elif line.startswith("/languagelevel where{pop languagelevel}{1}ifelse 2 ge{1 dict dup/NumCopies") : |
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| 147 | try : |
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[491] | 148 | number = int(previousline[2:]) |
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[248] | 149 | except : |
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| 150 | pass |
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| 151 | else : |
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[273] | 152 | if number > self.pages[pagecount]["copies"] : |
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| 153 | self.pages[pagecount]["copies"] = number |
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[290] | 154 | elif line.startswith("/#copies ") : |
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| 155 | try : |
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[491] | 156 | number = int(line.split()[1]) |
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[290] | 157 | except : |
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| 158 | pass |
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| 159 | else : |
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| 160 | if number > self.pages[pagecount]["copies"] : |
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| 161 | self.pages[pagecount]["copies"] = number |
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[448] | 162 | elif line.startswith(r"%RBINumCopies: ") : |
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| 163 | try : |
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[491] | 164 | number = int(line.split()[1]) |
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[448] | 165 | except : |
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| 166 | pass |
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| 167 | else : |
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| 168 | if number > self.pages[pagecount]["copies"] : |
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| 169 | self.pages[pagecount]["copies"] = number |
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[248] | 170 | previousline = line |
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| 171 | |
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| 172 | # extract max number of copies to please the ghostscript parser, just |
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| 173 | # in case we will use it later |
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[273] | 174 | self.copies = max([ v["copies"] for (k, v) in self.pages.items() ]) |
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[193] | 175 | |
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[248] | 176 | # now apply the number of copies to each page |
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[448] | 177 | if not pagecount and pagescomment : |
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| 178 | pagecount = pagescomment |
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[248] | 179 | for pnum in range(1, pagecount + 1) : |
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[448] | 180 | page = self.pages.get(pnum, self.pages.get(1, self.pages.get(0, { "copies" : 1 }))) |
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[248] | 181 | copies = page["copies"] |
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| 182 | pagecount += (copies - 1) |
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[252] | 183 | self.logdebug("%s * page #%s" % (copies, pnum)) |
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[444] | 184 | |
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[273] | 185 | self.logdebug("Internal parser said : %s pages" % pagecount) |
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[384] | 186 | return (pagecount, notrust) |
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[273] | 187 | |
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[193] | 188 | def getJobSize(self) : |
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| 189 | """Count pages in PostScript document.""" |
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[202] | 190 | self.copies = 1 |
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[384] | 191 | (nbpages, notrust) = self.natively() |
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| 192 | newnbpages = nbpages |
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[444] | 193 | if notrust or not nbpages : |
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[384] | 194 | try : |
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| 195 | newnbpages = self.throughGhostScript() |
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| 196 | except pdlparser.PDLParserError, msg : |
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| 197 | self.logdebug(msg) |
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| 198 | return max(nbpages, newnbpages) |
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