filter/source/svg/js2hxx.py

   1 #!/usr/bin/env python
   2 #
   3 # This file is part of the LibreOffice project.
   4 #
   5 # This Source Code Form is subject to the terms of the Mozilla Public
   6 # License, v. 2.0. If a copy of the MPL was not distributed with this
   7 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8 #
   9 # Software distributed under the License is distributed on an "AS IS" basis,
  10 # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11 # for the specific language governing rights and limitations under the
  12 # License.
  13 #
  14 # Major Contributor(s):
  15 # Copyright (C) 2011 Marco Cecchetti <mrcekets@gmail.com>
  16 #
  17 # All Rights Reserved.
  18 #
  19 # For minor contributions see the git repository.
  20
  21 import os, sys
  22
  23 MAX_LINES = 150
  24 VARIABLE_NAME = 'aSVGScript'
  25
  26 def get_var_decl(n):
  27     return 'static const char %s%d[] =' % ( VARIABLE_NAME, n )
  28
  29 script_name = os.path.basename( sys.argv[0] )
  30 infile_name = sys.argv[1]
  31 outfile_name = sys.argv[2]
  32
  33
  34 # collect input JavaScript file lines
  35 if( not os.path.isfile( infile_name ) ):
  36     print ( '%s: error: file "%s" not found' % ( script_name, infile_name ) )
  37     sys.exit( -1 )
  38
  39 infile = open( infile_name, 'r' )
  40 in_lines = [line.rstrip() for line in infile.readlines()]
  41 infile.close()
  42
  43
  44 valid_lines=[]
  45 is_multiline_comment = False
  46 lineNumber = 0
  47 emptyLineCount = 0
  48 for line in in_lines:
  49     lineNumber += 1
  50     index = line.find('"')
  51     if( index != -1 ):
  52         print ( '%s: warning: processed file contains \'"\' at %d:%d' % ( script_name, lineNumber, index ) )
  53
  54     sline = line.strip()
  55
  56     # strip comment lines except multilines comments that begins with one '/' and exactly 5 '*'
  57     if( is_multiline_comment and sline.endswith( '*/' ) ):
  58         is_multiline_comment = False
  59         continue
  60
  61     if( is_multiline_comment ):
  62         continue
  63
  64     if( sline.startswith( '//' ) ):
  65         continue
  66
  67     if( sline.startswith( '/*' ) and sline.endswith( '*/' ) ):
  68         continue
  69
  70     if( ( sline.startswith( '/*' ) and not sline.startswith( '/*****' ) )
  71          or sline.startswith( '/******' ) ):
  72         is_multiline_comment = True
  73         continue
  74
  75     # disable any debug printer
  76     dline = line.replace( 'NAVDBG.on', 'NAVDBG.off' )
  77     dline = dline.replace( 'ANIMDBG.on', 'ANIMDBG.off' )
  78     dline = dline.replace( 'DebugPrinter.on', 'DebugPrinter.off' )
  79
  80     escaped_line = '%s' % dline
  81     escaped_line = escaped_line.rstrip().lstrip()
  82
  83     # no more than 2 consecutive empty lines
  84     if( escaped_line == '' ):
  85         emptyLineCount += 1
  86     else:
  87         emptyLineCount = 0
  88
  89     if( emptyLineCount > 2 ):
  90         continue
  91
  92     # append to some escape sequence another '\'
  93     escaped_line = escaped_line.replace( '\\', '\\\\' )
  94     escaped_line = escaped_line.replace( '\n', '\\n')
  95     escaped_line = escaped_line.replace( '\t', '\\t' )
  96
  97     valid_lines.append( escaped_line )
  98
  99
 100 # compute the number of needed fragments that is of C constant strings
 101 total_valid_lines = len (valid_lines) + 2
 102 total_fragments = total_valid_lines / MAX_LINES
 103 if( ( total_valid_lines % MAX_LINES ) != 0 ):
 104     total_fragments += 1
 105
 106
 107
 108 out_lines = []
 109 out_lines.append( '' )
 110 out_lines.append( '#define N_SVGSCRIPT_FRAGMENTS %d' % total_fragments )
 111 out_lines.append( '' )
 112 out_lines.append( get_var_decl( 0 ) )
 113 out_lines.append( '"<![CDATA[\\n\\' )
 114 i = 2
 115 fragment = 0
 116 for line in valid_lines:
 117     out_lines.append( line + '\\n\\' )
 118     if( i == MAX_LINES ):
 119         i = 0
 120         fragment += 1
 121         out_lines.append( '";' )
 122         out_lines.append( '' )
 123         out_lines.append( get_var_decl( fragment ) )
 124         out_lines.append( '"\\' )
 125     i += 1
 126
 127 out_lines.append( ']]>";' )
 128 out_lines.append( '' )
 129
 130 out_lines.append('static const char * g_SVGScripts[N_SVGSCRIPT_FRAGMENTS] = {')
 131 for j in range(0, fragment+1):
 132     out_lines.append("    %s%d," % (VARIABLE_NAME, j))
 133 out_lines.append('};')
 134
 135 outfile = open( outfile_name, 'w' )
 136 if( not os.path.isfile( outfile_name ) ):
 137     print ( '%s: error: I cannot create file "%s"' % ( script_name, outfile_name ) )
 138     sys.exit( -1 )
 139
 140
 141 # C++ header
 142 header_info = '/* !! This file is auto-generated, do not edit !! */'
 143
 144 outfile.write( header_info +'\n\n' )
 145
 146 for line in out_lines:
 147     outfile.write( line + '\n' )
 148
 149 outfile.close()