added epub download desc

[wolnelektury.git] / lib / markupstring.py

diff --git a/lib/markupstring.py b/lib/markupstring.py
index f31e148..0e273f2 100644 (file)
--- a/lib/markupstring.py
+++ b/lib/markupstring.py
@@ -5,50 +5,50 @@
 import xml.sax
 
 
 import xml.sax
 
 

-class simpleHandler (xml.sax.ContentHandler):
+class simpleHandler(xml.sax.ContentHandler):

     """A simple handler that provides us with indices of marked up content."""
     """A simple handler that provides us with indices of marked up content."""

-    def __init__ (self):        
+    def __init__(self):

         self.elements = [] #this will contain a list of elements and their start/end indices
         self.open_elements = [] #this holds info on open elements while we wait for their close
         self.content = ""
 
         self.elements = [] #this will contain a list of elements and their start/end indices
         self.open_elements = [] #this holds info on open elements while we wait for their close
         self.content = ""
 

-    def startElement (self,name,attrs):
-        if name=='foobar': return # we require an outer wrapper, which we promptly ignore.
+    def startElement(self, name, attrs):
+        if name == 'foobar': return # we require an outer wrapper, which we promptly ignore.

         self.open_elements.append({'name':name,
                                    'attrs':attrs.copy(),
                                    'start':len(self.content),
                                    })
 
         self.open_elements.append({'name':name,
                                    'attrs':attrs.copy(),
                                    'start':len(self.content),
                                    })
 

-    def endElement (self, name):
-        if name=='foobar': return # we require an outer wrapper, which we promptly ignore.
+    def endElement(self, name):
+        if name == 'foobar': return # we require an outer wrapper, which we promptly ignore.

         for i in range(len(self.open_elements)):
             e = self.open_elements[i]
         for i in range(len(self.open_elements)):
             e = self.open_elements[i]

-            if e['name']==name:
+            if e['name'] == name:

                 # append a  (start,end), name, attrs
                 self.elements.append(((e['start'], #start position
                 # append a  (start,end), name, attrs
                 self.elements.append(((e['start'], #start position

-                                       len(self.content)),# current (end) position
-                                      e['name'],e['attrs'])
+                                       len(self.content)), # current (end) position
+                                      e['name'], e['attrs'])

                                      )
                 del self.open_elements[i]
                 return
 
                                      )
                 del self.open_elements[i]
                 return
 

-    def characters (self, chunk):
+    def characters(self, chunk):

         self.content += chunk
 
 
         self.content += chunk
 
 

-class MarkupString (unicode):
+class MarkupString(unicode):

     """A simple class for dealing with marked up strings. When we are sliced, we return
     valid marked up strings, preserving markup."""
     """A simple class for dealing with marked up strings. When we are sliced, we return
     valid marked up strings, preserving markup."""

-    def __init__ (self, string):        
-        unicode.__init__(self, string)
+    def __init__(self, string):
+        unicode.__init__(self)

         self.handler = simpleHandler()
         xml.sax.parseString((u"<foobar>%s</foobar>" % string).encode('utf-8'), self.handler)
         self.raw = self.handler.content
 
         self.handler = simpleHandler()
         xml.sax.parseString((u"<foobar>%s</foobar>" % string).encode('utf-8'), self.handler)
         self.raw = self.handler.content
 

-    def __getitem__ (self, n):
-        return self.__getslice__(n,n+1)
+    def __getitem__(self, n):
+        return self.__getslice__(n, n + 1)

 
 

-    def __getslice__ (self, s, e):
+    def __getslice__(self, s, e):

         # only include relevant elements
         if not e or e > len(self.raw): e = len(self.raw)
         elements = filter(lambda tp: (tp[0][1] >= s and # end after the start...
         # only include relevant elements
         if not e or e > len(self.raw): e = len(self.raw)
         elements = filter(lambda tp: (tp[0][1] >= s and # end after the start...


@@ -64,21 +64,21 @@ class MarkupString (unicode):
             name = el[1]
             attrs = el[2]
             # write our start tag <stag att="val"...>
             name = el[1]
             attrs = el[2]
             # write our start tag <stag att="val"...>

-            stag = "<%s"%name
-            for k,v in attrs.items(): stag += " %s=%s"%(k,xml.sax.saxutils.quoteattr(v))
+            stag = "<%s" % name
+            for k, v in attrs.items(): stag += " %s=%s" % (k, xml.sax.saxutils.quoteattr(v))

             stag += ">"
             stag += ">"

-            etag = "</%s>"%name # simple end tag
+            etag = "</%s>" % name # simple end tag

             spos = pos[0]
             epos = pos[1]
             spos = pos[0]
             epos = pos[1]

-            if spos < s: spos=s
-            if epos > e: epos=e
+            if spos < s: spos = s
+            if epos > e: epos = e

             if epos != spos: # we don't care about tags that don't markup any text
             if epos != spos: # we don't care about tags that don't markup any text

-                if not starts.has_key(spos): starts[spos]=[]
+                if not starts.has_key(spos): starts[spos] = []

                 starts[spos].append(stag)
                 starts[spos].append(stag)

-                if not ends.has_key(epos): ends[epos]=[]
+                if not ends.has_key(epos): ends[epos] = []

                 ends[epos].append(etag)
         outbuf = "" # our actual output string
                 ends[epos].append(etag)
         outbuf = "" # our actual output string

-        for pos in range(s,e): # we move through positions
+        for pos in range(s, e): # we move through positions

             char = self.raw[pos]
             if ends.has_key(pos):  # if there are endtags to insert...
                 for et in ends[pos]: outbuf += et
             char = self.raw[pos]
             if ends.has_key(pos):  # if there are endtags to insert...
                 for et in ends[pos]: outbuf += et


@@ -89,6 +89,9 @@ class MarkupString (unicode):
                 for st in mystarts: outbuf += st
             outbuf += char
         if ends.has_key(e):
                 for st in mystarts: outbuf += st
             outbuf += char
         if ends.has_key(e):

-            for et in ends[e]: outbuf+= et
+            for et in ends[e]: outbuf += et

         return MarkupString(outbuf)
 
         return MarkupString(outbuf)
 

+    def __len__(self):
+        return len(self.raw)
+