1 | # PyKota |
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2 | # -*- coding: ISO-8859-15 -*- |
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3 | # |
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4 | # PyKota - Print Quotas for CUPS and LPRng |
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5 | # |
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6 | # (c) 2003-2004 Jerome Alet <alet@librelogiciel.com> |
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7 | # This program is free software; you can redistribute it and/or modify |
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8 | # it under the terms of the GNU General Public License as published by |
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9 | # the Free Software Foundation; either version 2 of the License, or |
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10 | # (at your option) any later version. |
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11 | # |
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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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18 | # along with this program; if not, write to the Free Software |
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19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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20 | # |
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21 | # $Id$ |
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22 | # |
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23 | # $Log$ |
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24 | # Revision 1.21 2004/06/28 23:11:26 jalet |
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25 | # Code de-factorization in PCLXL parser |
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26 | # |
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27 | # Revision 1.20 2004/06/28 22:38:41 jalet |
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28 | # Increased speed by a factor of 2 in PCLXL parser |
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29 | # |
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30 | # Revision 1.19 2004/06/28 21:20:30 jalet |
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31 | # PCLXL support now works ! |
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32 | # |
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33 | # Revision 1.18 2004/06/27 22:59:37 jalet |
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34 | # More work on PCLXL parser |
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35 | # |
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36 | # Revision 1.17 2004/06/26 23:20:01 jalet |
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37 | # Additionnal speedup for GhostScript generated PCL5 files |
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38 | # |
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39 | # Revision 1.16 2004/06/26 15:31:00 jalet |
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40 | # mmap reintroduced in PCL5 parser |
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41 | # |
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42 | # Revision 1.15 2004/06/26 14:14:31 jalet |
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43 | # Now uses Psyco if it is available |
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44 | # |
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45 | # Revision 1.14 2004/06/25 09:50:28 jalet |
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46 | # More debug info in PCLXL parser |
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47 | # |
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48 | # Revision 1.13 2004/06/25 08:10:08 jalet |
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49 | # Another fix for PCL5 parser |
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50 | # |
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51 | # Revision 1.12 2004/06/24 23:09:53 jalet |
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52 | # Fix for number of copies in PCL5 parser |
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53 | # |
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54 | # Revision 1.11 2004/06/23 22:07:50 jalet |
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55 | # Fixed PCL5 parser according to the sources of rastertohp |
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56 | # |
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57 | # Revision 1.10 2004/06/18 22:24:03 jalet |
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58 | # Removed old comments |
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59 | # |
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60 | # Revision 1.9 2004/06/18 22:21:27 jalet |
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61 | # Native PDF parser greatly improved. |
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62 | # GhostScript based PDF parser completely removed because native code |
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63 | # is now portable across Python versions. |
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64 | # |
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65 | # Revision 1.8 2004/06/18 20:49:46 jalet |
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66 | # "ERROR:" prefix added |
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67 | # |
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68 | # Revision 1.7 2004/06/18 17:48:04 jalet |
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69 | # Added native fast PDF parsing method |
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70 | # |
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71 | # Revision 1.6 2004/06/18 14:00:16 jalet |
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72 | # Added PDF support in smart PDL analyzer (through GhostScript for now) |
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73 | # |
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74 | # Revision 1.5 2004/06/18 10:09:05 jalet |
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75 | # Resets file pointer to start of file in all cases |
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76 | # |
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77 | # Revision 1.4 2004/06/18 06:16:14 jalet |
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78 | # Fixes PostScript detection code for incorrect drivers |
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79 | # |
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80 | # Revision 1.3 2004/05/21 20:40:08 jalet |
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81 | # All the code for pkpgcounter is now in pdlanalyzer.py |
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82 | # |
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83 | # Revision 1.2 2004/05/19 19:09:36 jalet |
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84 | # Speed improvement |
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85 | # |
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86 | # Revision 1.1 2004/05/18 09:59:54 jalet |
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87 | # pkpgcounter is now just a wrapper around the PDLAnalyzer class |
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88 | # |
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89 | # |
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90 | # |
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91 | |
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92 | import sys |
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93 | import os |
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94 | import re |
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95 | import struct |
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96 | import tempfile |
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97 | import mmap |
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98 | |
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99 | KILOBYTE = 1024 |
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100 | MEGABYTE = 1024 * KILOBYTE |
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101 | |
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102 | class PDLAnalyzerError(Exception): |
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103 | """An exception for PDL Analyzer related stuff.""" |
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104 | def __init__(self, message = ""): |
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105 | self.message = message |
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106 | Exception.__init__(self, message) |
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107 | def __repr__(self): |
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108 | return self.message |
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109 | __str__ = __repr__ |
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110 | |
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111 | class PostScriptAnalyzer : |
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112 | def __init__(self, infile) : |
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113 | """Initialize PostScript Analyzer.""" |
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114 | self.infile = infile |
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115 | |
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116 | def getJobSize(self) : |
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117 | """Count pages in a DSC compliant PostScript document.""" |
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118 | pagecount = 0 |
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119 | for line in self.infile.xreadlines() : |
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120 | if line.startswith("%%Page: ") : |
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121 | pagecount += 1 |
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122 | return pagecount |
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123 | |
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124 | class PDFAnalyzer : |
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125 | def __init__(self, infile) : |
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126 | """Initialize PDF Analyzer.""" |
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127 | self.infile = infile |
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128 | |
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129 | def getJobSize(self) : |
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130 | """Counts pages in a PDF document.""" |
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131 | regexp = re.compile(r"(/Type) ?(/Page)[/ \t\r\n]") |
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132 | pagecount = 0 |
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133 | for line in self.infile.xreadlines() : |
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134 | pagecount += len(regexp.findall(line)) |
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135 | return pagecount |
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136 | |
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137 | class PCLAnalyzer : |
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138 | def __init__(self, infile) : |
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139 | """Initialize PCL Analyzer.""" |
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140 | self.infile = infile |
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141 | |
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142 | def getJobSize(self) : |
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143 | """Count pages in a PCL5 document.""" |
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144 | # |
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145 | # Algorithm from pclcount |
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146 | # (c) 2003, by Eduardo Gielamo Oliveira & Rodolfo Broco Manin |
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147 | # published under the terms of the GNU General Public Licence v2. |
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148 | # |
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149 | # Backported from C to Python by Jerome Alet, then enhanced |
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150 | # with more PCL tags detected. I think all the necessary PCL tags |
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151 | # are recognized to correctly handle PCL5 files wrt their number |
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152 | # of pages. The documentation used for this was : |
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153 | # |
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154 | # HP PCL/PJL Reference Set |
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155 | # PCL5 Printer Language Technical Quick Reference Guide |
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156 | # http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13205/bpl13205.pdf |
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157 | # |
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158 | infileno = self.infile.fileno() |
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159 | minfile = mmap.mmap(infileno, os.fstat(infileno).st_size, access=mmap.ACCESS_READ) |
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160 | tagsends = { "&n" : "W", |
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161 | "&b" : "W", |
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162 | "*i" : "W", |
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163 | "*l" : "W", |
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164 | "*m" : "W", |
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165 | "*v" : "W", |
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166 | "*c" : "W", |
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167 | "(f" : "W", |
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168 | "(s" : "W", |
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169 | ")s" : "W", |
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170 | "&p" : "X", |
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171 | "&l" : "XH", |
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172 | "&a" : "G", |
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173 | # "*b" : "VW", # treated specially because it occurs very often |
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174 | } |
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175 | pagecount = resets = ejects = backsides = 0 |
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176 | tag = None |
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177 | copies = {} |
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178 | pos = 0 |
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179 | try : |
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180 | while 1 : |
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181 | char = minfile[pos] ; pos += 1 |
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182 | if char == "\014" : |
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183 | pagecount += 1 |
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184 | elif char == "\033" : |
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185 | # |
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186 | # <ESC>*b###W -> Start of a raster data row/block |
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187 | # <ESC>*b###V -> Start of a raster data plane |
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188 | # <ESC>*c###W -> Start of a user defined pattern |
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189 | # <ESC>*i###W -> Start of a viewing illuminant block |
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190 | # <ESC>*l###W -> Start of a color lookup table |
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191 | # <ESC>*m###W -> Start of a download dither matrix block |
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192 | # <ESC>*v###W -> Start of a configure image data block |
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193 | # <ESC>(s###W -> Start of a characters description block |
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194 | # <ESC>)s###W -> Start of a fonts description block |
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195 | # <ESC>(f###W -> Start of a symbol set block |
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196 | # <ESC>&b###W -> Start of configuration data block |
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197 | # <ESC>&l###X -> Number of copies for current page |
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198 | # <ESC>&n###W -> Starts an alphanumeric string ID block |
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199 | # <ESC>&p###X -> Start of a non printable characters block |
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200 | # <ESC>&a2G -> Back side when duplex mode as generated by rastertohp |
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201 | # <ESC>&l0H -> Eject if NumPlanes > 1, as generated by rastertohp |
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202 | # |
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203 | tagstart = minfile[pos] ; pos += 1 |
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204 | if tagstart in "E9=YZ" : # one byte PCL tag |
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205 | if tagstart == "E" : |
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206 | resets += 1 |
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207 | continue # skip to next tag |
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208 | tag = tagstart + minfile[pos] ; pos += 1 |
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209 | if tag == "*b" : |
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210 | tagend = "VW" |
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211 | else : |
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212 | try : |
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213 | tagend = tagsends[tag] |
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214 | except KeyError : |
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215 | continue # Unsupported PCL tag |
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216 | # Now read the numeric argument |
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217 | size = 0 |
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218 | while 1 : |
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219 | char = minfile[pos] ; pos += 1 |
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220 | if not char.isdigit() : |
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221 | break |
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222 | size = (size * 10) + int(char) |
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223 | if char in tagend : |
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224 | if (tag == "&l") and (char == "X") : # copies for current page |
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225 | copies[pagecount] = size |
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226 | elif (tag == "&l") and (char == "H") and (size == 0) : |
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227 | ejects += 1 # Eject |
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228 | elif (tag == "&a") and (size == 2) : |
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229 | backsides += 1 # Back side in duplex mode |
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230 | else : |
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231 | # we just ignore the block. |
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232 | if tag == "&n" : |
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233 | # we have to take care of the operation id byte |
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234 | # which is before the string itself |
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235 | size += 1 |
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236 | pos += size |
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237 | except IndexError : # EOF ? |
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238 | minfile.close() # reached EOF |
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239 | |
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240 | # if pagecount is still 0, we will use the number |
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241 | # of resets instead of the number of form feed characters. |
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242 | # but the number of resets is always at least 2 with a valid |
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243 | # pcl file : one at the very start and one at the very end |
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244 | # of the job's data. So we substract 2 from the number of |
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245 | # resets. And since on our test data we needed to substract |
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246 | # 1 more, we finally substract 3, and will test several |
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247 | # PCL files with this. If resets < 2, then the file is |
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248 | # probably not a valid PCL file, so we use 0 |
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249 | if not pagecount : |
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250 | pagecount = (pagecount or ((resets - 3) * (resets > 2))) |
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251 | else : |
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252 | # here we add counters for other ways new pages may have |
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253 | # been printed and ejected by the printer |
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254 | pagecount += ejects + backsides |
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255 | |
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256 | # now handle number of copies for each page (may differ). |
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257 | # in duplex mode, number of copies may be sent only once. |
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258 | for pnum in range(pagecount) : |
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259 | # if no number of copies defined, take the preceding one else 1. |
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260 | nb = copies.get(pnum, copies.get(pnum-1, 1)) |
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261 | pagecount += (nb - 1) |
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262 | return pagecount |
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263 | |
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264 | class PCLXLAnalyzer : |
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265 | def __init__(self, infile) : |
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266 | """Initialize PCLXL Analyzer.""" |
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267 | # raise PDLAnalyzerError, "PCLXL (aka PCL6) is not supported yet." |
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268 | self.infile = infile |
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269 | self.endianness = None |
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270 | found = 0 |
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271 | while not found : |
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272 | line = self.infile.readline() |
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273 | if not line : |
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274 | break |
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275 | if line[1:12] == " HP-PCL XL;" : |
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276 | found = 1 |
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277 | endian = ord(line[0]) |
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278 | if endian == 0x29 : |
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279 | self.littleEndian() |
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280 | elif endian == 0x28 : |
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281 | self.bigEndian() |
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282 | # elif endian == 0x27 : TODO : What can we do here ? |
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283 | # |
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284 | else : |
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285 | raise PDLAnalyzerError, "No endianness marker 0x%02x at start !" % endian |
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286 | if not found : |
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287 | raise PDLAnalyzerError, "This file doesn't seem to be PCLXL (aka PCL6)" |
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288 | else : |
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289 | # Initialize table of tags |
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290 | self.tags = [ 0 ] * 256 |
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291 | |
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292 | # GhostScript's sources tell us that HP printers |
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293 | # only accept little endianness, but we can handle both. |
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294 | self.tags[0x28] = self.bigEndian # BigEndian |
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295 | self.tags[0x29] = self.littleEndian # LittleEndian |
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296 | |
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297 | self.tags[0x43] = self.beginPage # BeginPage |
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298 | |
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299 | self.tags[0xc0] = 1 # ubyte |
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300 | self.tags[0xc1] = 2 # uint16 |
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301 | self.tags[0xc2] = 4 # uint32 |
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302 | self.tags[0xc3] = 2 # sint16 |
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303 | self.tags[0xc4] = 4 # sint32 |
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304 | self.tags[0xc5] = 4 # real32 |
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305 | |
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306 | self.tags[0xc8] = self.array_8 # ubyte_array |
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307 | self.tags[0xc9] = self.array_16 # uint16_array |
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308 | self.tags[0xca] = self.array_32 # uint32_array |
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309 | self.tags[0xcb] = self.array_16 # sint16_array |
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310 | self.tags[0xcc] = self.array_32 # sint32_array |
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311 | self.tags[0xcd] = self.array_32 # real32_array |
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312 | |
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313 | self.tags[0xd0] = 2 # ubyte_xy |
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314 | self.tags[0xd1] = 4 # uint16_xy |
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315 | self.tags[0xd2] = 8 # uint32_xy |
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316 | self.tags[0xd3] = 4 # sint16_xy |
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317 | self.tags[0xd4] = 8 # sint32_xy |
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318 | self.tags[0xd5] = 8 # real32_xy |
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319 | |
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320 | self.tags[0xe0] = 4 # ubyte_box |
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321 | self.tags[0xe1] = 8 # uint16_box |
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322 | self.tags[0xe2] = 16 # uint32_box |
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323 | self.tags[0xe3] = 8 # sint16_box |
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324 | self.tags[0xe4] = 16 # sint32_box |
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325 | self.tags[0xe5] = 16 # real32_box |
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326 | |
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327 | self.tags[0xf8] = 1 # attr_ubyte |
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328 | self.tags[0xf9] = 2 # attr_uint16 |
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329 | |
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330 | self.tags[0xfa] = self.embeddedData # dataLength |
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331 | self.tags[0xfb] = self.embeddedDataSmall # dataLengthByte |
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332 | |
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333 | def beginPage(self) : |
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334 | """Indicates the beginning of a new page.""" |
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335 | self.pagecount += 1 |
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336 | return 0 |
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337 | |
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338 | def array_8(self) : |
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339 | """Handles byte arrays.""" |
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340 | pos = self.pos |
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341 | datatype = self.minfile[pos] |
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342 | pos += 1 |
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343 | length = self.tags[ord(datatype)] |
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344 | if callable(length) : |
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345 | self.pos = pos |
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346 | length = length() |
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347 | pos = self.pos |
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348 | posl = pos + length |
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349 | sarraysize = self.minfile[pos:posl] |
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350 | self.pos = posl |
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351 | if length == 1 : |
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352 | return struct.unpack(self.endianness + "B", sarraysize)[0] |
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353 | elif length == 2 : |
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354 | return struct.unpack(self.endianness + "H", sarraysize)[0] |
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355 | elif length == 4 : |
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356 | return struct.unpack(self.endianness + "I", sarraysize)[0] |
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357 | else : |
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358 | raise PDLAnalyzerError, "Error on array size at %s" % self.pos |
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359 | |
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360 | def array_16(self) : |
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361 | """Handles byte arrays.""" |
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362 | pos = self.pos |
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363 | datatype = self.minfile[pos] |
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364 | pos += 1 |
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365 | length = self.tags[ord(datatype)] |
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366 | if callable(length) : |
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367 | self.pos = pos |
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368 | length = length() |
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369 | pos = self.pos |
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370 | posl = pos + length |
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371 | sarraysize = self.minfile[pos:posl] |
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372 | self.pos = posl |
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373 | if length == 1 : |
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374 | return 2 * struct.unpack(self.endianness + "B", sarraysize)[0] |
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375 | elif length == 2 : |
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376 | return 2 * struct.unpack(self.endianness + "H", sarraysize)[0] |
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377 | elif length == 4 : |
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378 | return 2 * struct.unpack(self.endianness + "I", sarraysize)[0] |
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379 | else : |
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380 | raise PDLAnalyzerError, "Error on array size at %s" % self.pos |
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381 | |
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382 | def array_32(self) : |
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383 | """Handles byte arrays.""" |
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384 | pos = self.pos |
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385 | datatype = self.minfile[pos] |
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386 | pos += 1 |
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387 | length = self.tags[ord(datatype)] |
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388 | if callable(length) : |
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389 | self.pos = pos |
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390 | length = length() |
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391 | pos = self.pos |
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392 | posl = pos + length |
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393 | sarraysize = self.minfile[pos:posl] |
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394 | self.pos = posl |
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395 | if length == 1 : |
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396 | return 4 * struct.unpack(self.endianness + "B", sarraysize)[0] |
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397 | elif length == 2 : |
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398 | return 4 * struct.unpack(self.endianness + "H", sarraysize)[0] |
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399 | elif length == 4 : |
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400 | return 4 * struct.unpack(self.endianness + "I", sarraysize)[0] |
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401 | else : |
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402 | raise PDLAnalyzerError, "Error on array size at %s" % self.pos |
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403 | |
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404 | def embeddedDataSmall(self) : |
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405 | """Handle small amounts of data.""" |
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406 | pos = self.pos |
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407 | length = ord(self.minfile[pos]) |
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408 | self.pos = pos + 1 |
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409 | return length |
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410 | |
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411 | def embeddedData(self) : |
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412 | """Handle normal amounts of data.""" |
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413 | fmt = self.endianness + "I" |
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414 | pos = self.pos |
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415 | pos4 = pos + 4 |
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416 | data = self.minfile[pos:pos4] |
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417 | self.pos = pos4 |
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418 | return struct.unpack(fmt, data)[0] |
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419 | |
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420 | def littleEndian(self) : |
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421 | """Toggles to little endianness.""" |
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422 | self.endianness = "<" # little endian |
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423 | return 0 |
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424 | |
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425 | def bigEndian(self) : |
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426 | """Toggles to big endianness.""" |
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427 | self.endianness = ">" # big endian |
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428 | return 0 |
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429 | |
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430 | def getJobSize(self) : |
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431 | """Counts pages in a PCLXL (PCL6) document.""" |
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432 | infileno = self.infile.fileno() |
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433 | self.minfile = minfile = mmap.mmap(infileno, os.fstat(infileno).st_size, access=mmap.ACCESS_READ) |
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434 | tags = self.tags |
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435 | self.pagecount = 0 |
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436 | self.pos = pos = self.infile.tell() |
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437 | try : |
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438 | while 1 : |
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439 | char = minfile[pos] |
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440 | pos += 1 |
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441 | length = tags[ord(char)] |
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442 | if not length : |
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443 | continue |
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444 | if callable(length) : |
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445 | self.pos = pos |
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446 | length = length() |
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447 | pos = self.pos |
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448 | pos += length |
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449 | except IndexError : # EOF ? |
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450 | self.minfile.close() # reached EOF |
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451 | return self.pagecount |
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452 | |
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453 | class PDLAnalyzer : |
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454 | """Generic PDL Analyzer class.""" |
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455 | def __init__(self, filename) : |
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456 | """Initializes the PDL analyzer. |
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457 | |
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458 | filename is the name of the file or '-' for stdin. |
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459 | filename can also be a file-like object which |
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460 | supports read() and seek(). |
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461 | """ |
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462 | self.filename = filename |
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463 | try : |
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464 | import psyco |
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465 | except ImportError : |
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466 | pass # Psyco is not installed |
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467 | else : |
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468 | # Psyco is installed, tell it to compile |
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469 | # the CPU intensive methods : PCL and PCLXL |
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470 | # parsing will greatly benefit from this, |
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471 | # for PostScript and PDF the difference is |
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472 | # barely noticeable since they are already |
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473 | # almost optimal, and much more speedy anyway. |
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474 | psyco.bind(PostScriptAnalyzer.getJobSize) |
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475 | psyco.bind(PDFAnalyzer.getJobSize) |
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476 | psyco.bind(PCLAnalyzer.getJobSize) |
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477 | psyco.bind(PCLXLAnalyzer.getJobSize) |
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478 | |
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479 | def getJobSize(self) : |
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480 | """Returns the job's size.""" |
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481 | self.openFile() |
---|
482 | try : |
---|
483 | pdlhandler = self.detectPDLHandler() |
---|
484 | except PDLAnalyzerError, msg : |
---|
485 | self.closeFile() |
---|
486 | raise PDLAnalyzerError, "ERROR : Unknown file format for %s (%s)" % (self.filename, msg) |
---|
487 | else : |
---|
488 | try : |
---|
489 | size = pdlhandler(self.infile).getJobSize() |
---|
490 | finally : |
---|
491 | self.closeFile() |
---|
492 | return size |
---|
493 | |
---|
494 | def openFile(self) : |
---|
495 | """Opens the job's data stream for reading.""" |
---|
496 | self.mustclose = 0 # by default we don't want to close the file when finished |
---|
497 | if hasattr(self.filename, "read") and hasattr(self.filename, "seek") : |
---|
498 | # filename is in fact a file-like object |
---|
499 | infile = self.filename |
---|
500 | elif self.filename == "-" : |
---|
501 | # we must read from stdin |
---|
502 | infile = sys.stdin |
---|
503 | else : |
---|
504 | # normal file |
---|
505 | self.infile = open(self.filename, "rb") |
---|
506 | self.mustclose = 1 |
---|
507 | return |
---|
508 | |
---|
509 | # Use a temporary file, always seekable contrary to standard input. |
---|
510 | self.infile = tempfile.TemporaryFile(mode="w+b") |
---|
511 | while 1 : |
---|
512 | data = infile.read(MEGABYTE) |
---|
513 | if not data : |
---|
514 | break |
---|
515 | self.infile.write(data) |
---|
516 | self.infile.flush() |
---|
517 | self.infile.seek(0) |
---|
518 | |
---|
519 | def closeFile(self) : |
---|
520 | """Closes the job's data stream if we can close it.""" |
---|
521 | if self.mustclose : |
---|
522 | self.infile.close() |
---|
523 | else : |
---|
524 | # if we don't have to close the file, then |
---|
525 | # ensure the file pointer is reset to the |
---|
526 | # start of the file in case the process wants |
---|
527 | # to read the file again. |
---|
528 | try : |
---|
529 | self.infile.seek(0) |
---|
530 | except : |
---|
531 | pass # probably stdin, which is not seekable |
---|
532 | |
---|
533 | def isPostScript(self, data) : |
---|
534 | """Returns 1 if data is PostScript, else 0.""" |
---|
535 | if data.startswith("%!") or \ |
---|
536 | data.startswith("\004%!") or \ |
---|
537 | data.startswith("\033%-12345X%!PS") or \ |
---|
538 | ((data[:128].find("\033%-12345X") != -1) and \ |
---|
539 | ((data.find("LANGUAGE=POSTSCRIPT") != -1) or \ |
---|
540 | (data.find("LANGUAGE = POSTSCRIPT") != -1) or \ |
---|
541 | (data.find("LANGUAGE = Postscript") != -1))) or \ |
---|
542 | (data.find("%!PS-Adobe") != -1) : |
---|
543 | return 1 |
---|
544 | else : |
---|
545 | return 0 |
---|
546 | |
---|
547 | def isPDF(self, data) : |
---|
548 | """Returns 1 if data is PDF, else 0.""" |
---|
549 | if data.startswith("%PDF-") or \ |
---|
550 | data.startswith("\033%-12345X%PDF-") or \ |
---|
551 | ((data[:128].find("\033%-12345X") != -1) and (data.upper().find("LANGUAGE=PDF") != -1)) or \ |
---|
552 | (data.find("%PDF-") != -1) : |
---|
553 | return 1 |
---|
554 | else : |
---|
555 | return 0 |
---|
556 | |
---|
557 | def isPCL(self, data) : |
---|
558 | """Returns 1 if data is PCL, else 0.""" |
---|
559 | if data.startswith("\033E\033") or \ |
---|
560 | ((data[:128].find("\033%-12345X") != -1) and \ |
---|
561 | ((data.find("LANGUAGE=PCL") != -1) or \ |
---|
562 | (data.find("LANGUAGE = PCL") != -1) or \ |
---|
563 | (data.find("LANGUAGE = Pcl") != -1))) : |
---|
564 | return 1 |
---|
565 | else : |
---|
566 | return 0 |
---|
567 | |
---|
568 | def isPCLXL(self, data) : |
---|
569 | """Returns 1 if data is PCLXL aka PCL6, else 0.""" |
---|
570 | if ((data[:128].find("\033%-12345X") != -1) and \ |
---|
571 | (data.find(" HP-PCL XL;") != -1) and \ |
---|
572 | ((data.find("LANGUAGE=PCLXL") != -1) or \ |
---|
573 | (data.find("LANGUAGE = PCLXL") != -1))) : |
---|
574 | return 1 |
---|
575 | else : |
---|
576 | return 0 |
---|
577 | |
---|
578 | def detectPDLHandler(self) : |
---|
579 | """Tries to autodetect the document format. |
---|
580 | |
---|
581 | Returns the correct PDL handler class or None if format is unknown |
---|
582 | """ |
---|
583 | # Try to detect file type by reading first block of datas |
---|
584 | self.infile.seek(0) |
---|
585 | firstblock = self.infile.read(KILOBYTE) |
---|
586 | self.infile.seek(0) |
---|
587 | if self.isPostScript(firstblock) : |
---|
588 | return PostScriptAnalyzer |
---|
589 | elif self.isPCLXL(firstblock) : |
---|
590 | return PCLXLAnalyzer |
---|
591 | elif self.isPCL(firstblock) : |
---|
592 | return PCLAnalyzer |
---|
593 | elif self.isPDF(firstblock) : |
---|
594 | return PDFAnalyzer |
---|
595 | else : |
---|
596 | raise PDLAnalyzerError, "Analysis of first data block failed." |
---|
597 | |
---|
598 | def main() : |
---|
599 | """Entry point for PDL Analyzer.""" |
---|
600 | if (len(sys.argv) < 2) or ((not sys.stdin.isatty()) and ("-" not in sys.argv[1:])) : |
---|
601 | sys.argv.append("-") |
---|
602 | |
---|
603 | totalsize = 0 |
---|
604 | for arg in sys.argv[1:] : |
---|
605 | try : |
---|
606 | parser = PDLAnalyzer(arg) |
---|
607 | totalsize += parser.getJobSize() |
---|
608 | except PDLAnalyzerError, msg : |
---|
609 | sys.stderr.write("ERROR: %s\n" % msg) |
---|
610 | sys.stderr.flush() |
---|
611 | print "%s" % totalsize |
---|
612 | |
---|
613 | if __name__ == "__main__" : |
---|
614 | main() |
---|