made it callable by other extensions. the workaround is sorta ugly, but it should...

[inkscape.git] / share / extensions / inkex.py

diff --git a/share/extensions/inkex.py b/share/extensions/inkex.py
index e210e90c2d0dbf3e29615664ca702415f77bed40..2c49f32f8f0b0ed5f569618442e9e4a3f59a47c2 100755 (executable)
--- a/share/extensions/inkex.py
+++ b/share/extensions/inkex.py
@@ -19,7 +19,7 @@ You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 """
-import sys, copy, optparse, random
+import sys, copy, optparse, random, re
 
 #a dictionary of all of the xmlns prefixes in a standard inkscape doc
 NSS = {
@@ -32,8 +32,29 @@ u'inkscape'    :u'http://www.inkscape.org/namespaces/inkscape',
 u'xlink'    :u'http://www.w3.org/1999/xlink'
 }
 
+#a dictionary of unit to user unit conversion factors
+uuconv = {'in':90.0, 'pt':1.25, 'px':1, 'mm':3.5433070866, 'cm':35.433070866, 'pc':15.0}
+def unittouu(string):
+    '''Returns returns userunits given a string representation of units in another system'''
+    unit = re.compile('(%s)$' % '|'.join(uuconv.keys()))
+    param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')
+
+    p = param.match(string)
+    u = unit.search(string)    
+    if p:
+        retval = float(p.string[p.start():p.end()])
+    else:
+        retval = 0.0
+    if u:
+        try:
+            return retval * uuconv[u.string[u.start():u.end()]]
+        except KeyError:
+            pass
+    return retval
+
 try:
     import xml.dom.ext
+    import xml.dom.minidom
     import xml.dom.ext.reader.Sax2
     import xml.xpath
 except:
@@ -59,7 +80,7 @@ class InkOption(optparse.Option):
 
 class Effect:
     """A class for creating Inkscape SVG Effects"""
-    def __init__(self):
+    def __init__(self, *args, **kwargs):
         self.id_characters = '0123456789abcdefghijklmnopqrstuvwkyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
         self.document=None
         self.ctx=None
@@ -67,6 +88,7 @@ class Effect:
         self.doc_ids={}
         self.options=None
         self.args=None
+        self.use_minidom=kwargs.pop("use_minidom", False)
         self.OptionParser = optparse.OptionParser(usage="usage: %prog [options] SVGfile",option_class=InkOption)
         self.OptionParser.add_option("--id",
                         action="append", type="string", dest="ids", default=[], 
@@ -86,7 +108,10 @@ class Effect:
                 stream = open(self.args[-1],'r')
         except:
             stream = sys.stdin
-        self.document = reader.fromStream(stream)
+        if self.use_minidom:
+            self.document = xml.dom.minidom.parse(stream)
+        else:
+            self.document = reader.fromStream(stream)
         self.ctx = xml.xpath.Context.Context(self.document,processorNss=NSS)
         stream.close()
     def getposinlayer(self):