java - Jython - how can I merge two LeafElements in a DefaultStyledDocument? -

-

i'm trying "normalise" defaultstyleddocument subclass, in sense have org.w3c.dom.node.normalize(): is, merge adjoining text "leaves". in case of defaultstyleddocument these leaves identified merging if 2 adjacent ones have same attributes (or none).

below simple version (we don't check actual attributes: use-case either have plain text, or text 1 possible mark-up style).

def normalise( self ):     # recursive function:     def normalise_structure( el, depth = 0 ):         indent = '  ' * depth         start = el.startoffset         print( '%s# el %s |%s|' % ( indent, el, self.gettext( start, el.endoffset - start )))         prev_attr_set = none         in range( el.elementcount ):             subelement = el.getelement( )             normalise_structure( subelement, depth + 1 )             if subelement.leaf:                 curr_attr_set = subelement.attributes                 print( '%s  # leaf, attribs %s' % ( indent, curr_attr_set, ))                 # simple version: works if there 1 possible attribute                 if prev_attr_set , curr_attr_set , prev_attr_set.attributecount == curr_attr_set.attributecount:                     print( '%s  # %s leaf needs merged previous leaf' % (                                  indent, 'marked-up' if prev_attr_set.attributecount == 1 else 'plain'))                     attr_set = prev_attr_set.getelement( 0 ) if prev_attr_set.attributecount else none                     prev_subelement = el.getelement( - 1 )                     prev_start = prev_subelement.startoffset                     curr_end = subelement.endoffset                     merged_element = javax.swing.text.abstractdocument.leafelement(                          javax.swing.text.defaultstyleddocument(), el, attr_set, prev_start, curr_end  )                     el.replace( prev_start, curr_end - prev_start, [ merged_element ] )                 prev_attr_set = curr_attr_set             else:                 print( '%s  # not leaf...' % ( indent, ))                 prev_attr_set = none     self_el in self.rootelements:         normalise_structure( self_el )

when run error:

exception in thread "awt-eventqueue-0" java.lang.arrayindexoutofboundsexception @ java.lang.system.arraycopy(native method) @ javax.swing.text.abstractdocument$branchelement.replace(abstractdocument.java:2290)

i hasten add that, before trying javax.swing.text.defaultstyleddocument() param 1 in leafelement constructor tried "self" (i.e. defaultstyleddocument invokes normalise on line one): same error.

yes, possible do:

abstractdocument.branchelement.replace() looks this:

public void replace(int offset, int length, element[] elems)   ...

turns out "offset" , "length" here refer sub-elements of branchelement (typically leafelements), not offset , length of underlying text in styleddocument.

somebody cleverer me have got earlier. api documentation (java 7) might make bit clearer....


Comments

Post a Comment

Popular posts from this blog

c - How to retrieve a variable from the Apache configuration inside the module? -

-
i'm building custom apache module. how retrieve variable apache configuration inside module? see variable "some_var_config_from_apache_or_htaacess" inside apache module: /* source: http://people.apache.org/~humbedooh/mods/examples/mod_example_1.c */ /* include required headers httpd */ #include "httpd.h" #include "http_core.h" #include "http_protocol.h" #include "http_request.h" static void register_hooks(apr_pool_t *pool); static int example_handler(request_rec *r); /* define our module entity , assign function registering hooks */ module ap_module_declare_data example_module = { standard20_module_stuff, null, // per-directory configuration handler null, // merge handler per-directory configurations null, // per-server configuration handler null, // merge handler per-server configurations null, // directives may have httpd register_hoo
Read more

c# - Constructor arguments cannot be passed for interface mocks -

-
when debug code , read line mocklessonplannerafactory creation error: constructor arguments cannot passed interface mocks. var mockschoolclasscodeservice = new mock<ischoolclasscodeservice>(); var mockdateservice = new mock<idateservice>(); var mocklessonplannerafactory = new mock<ilessonplannerafactory>(mockdateservice.object); var mocklessonplannerbfactory = new mock<ilessonplannerbfactory>(mockdateservice.object); var service = new timetableservice(mockunitofwork.object, mocklessonplannerafactory.object, mocklessonplannerbfactory.object, mockschoolclasscodeservice.object); my timetableservice accepts instances of interface type only. mocklessonplannerafactory , bfactory... want in constructor idateservice passed. what wrong code? the clue in error message "constructor arguments cannot passed interface mocks." the mock created interface have default constructor because interfaces don't have constructor. remember mockin
Read more

python - malformed header from script index.py Bad header -

-
i want run python code in apache2(ubuntu 14.04) server. have followed these steps , getting error: step 1: configuration 1: have created directory , file under /var/www/cgi-bin configuration 2 : have edited /etc/apache2/sites-available/000-default.conf alias /cgi-bin /var/www/cgi-bin <directory "/var/www/cgi-bin"> options indexes followsymlinks execcgi addhandler cgi-script .cgi .py allow </directory> <directory /var/www/cgi-bin> options </directory> step 2: and python script is: index.py #!/usr/bin/env python import cgi; import cgitb;cgitb.enable() print "content-type: text/plain\n" print "<b>hello python</b>" step 3: when ran through chrome browser using: url : http://localhost/cgi-bin/index.py step 4: i getting error in error-log malformed header script 'index.py': bad header: hello python you should end header \r\n, must print out yet \r\n signal body coming. (i
Read more