Archive for February, 2008

I18N & L10N Unconference

February 25th, 2008 | Category: Localization

 Interesting… It’s Friday March 14th - 8-4 at the salesforce.com San Mateo campus.

http://localizationunconference.com/blog/?page_id=9

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Javascript Localization Reference

February 05th, 2008 | Category: Programming

Three good ways to localize Javascript:

1. Creating message-only Javacript files

http://www.clearwired.com/loop/archives/29-Widget.html

function getLocalizedString(key) {
try {
var ret = LocalizedStrings[key];
if (ret === undefined) ret = key;
return ret;
} catch (ex) {}
return key;

}

<div id="status"></div>

document.getElementById('status').innerHTML = getLocalizedString('Status: Ready');

fr_FR/Localized.js

var LocalizedStrings = new Object;
LocalizedStrings[’Status: Ready‘] = ‘French String Here’;

* Using English keys can sometimes cause multiple translation issues. Using unique string id can minimize this issue, although it is cumbersome for developers to come up with string ids. For example, LocalizaedString[’account’] can be translated as an email account or a bank account.

2. Good tips for Java:

http://www.jspwiki.org/wiki/JavascriptLocalization

Just realized that we need to also localize the Javascript. What would be a good strategy for that? I have four ideas:

  1. Make Javascript files regular JSP files, so we can use normal Java i18n techniques.
    • Problem: Needs careful consideration of caching; otherwise page loads may slow down considerably
  2. Use an AJAX technique to load i18n’d strings into the Javascript
    • Problem: may be too complicated to implement, and also slow
  3. Develop localized versions of each JS file
    • Problem: difficult to keep updated; can’t use the Java JAR’s to deploy new versions
  4. Remove any user-visible strings from the Javascript
    • Problem: perhaps impossible to do without sacrificing big pieces?

I would like to keep this such that it’s possible to deploy a new localization by simply dropping a JAR file in the correct directory. That would mean option #1…

String.prototype.localize = function(){
      var s = LocalizedStrings["javascript.”+this];
      if( !s ) return(  “§§§” + this + “§§§”  );
      for (var i = 0; i < arguments.length; i++)
      {
        s = s.replace(”{” + i + “}”, arguments[i]);
      }
      return s;
    }
});
…
 s += ”

“+ “SearchBox.clearrecent”.localize(1) + “

";
...
javascript.SearchBox.clearrecent=Clear {0} Recent Searches

3. Develop localized versions of each JS file with build tools

1. Create English XML & XSL & Javascript -> HTML + Javascript

2. Localize strings in XML files

3. Build tools create localized XML & XSL & Javascript

4. Localized: XML & XSL & Javascript -> localized HTML + Javascript

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Python Reference

February 05th, 2008 | Category: Programming

Python and MySQLdb:

http://dustman.net/andy/python/python-and-mysql

if __name__ == "__main__":

    conn = MyDB.get_db_conn()
    cursor = conn.cursor()

    data = [ ("eu marketing" , "eu specific campaign"), ("de echeck", "german echeck") ]

    try:
        cursor.executemany("insert into feature (name, description) values (%s, %s)", data)
    except MySQLdb.MySQLError, e:
        traceback.print_exc()
        MyDB.close_db_conn(conn)
        sys.exit(1)

    conn.commit()

    cursor.execute("select * from features")

    for x in range(0, int(cursor.rowcount)):
        row = cursor.fetchone()
        print row[0], " --> ", row[1]

Getting all Python Cookbook samples:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/543267

Properties.py

#! /usr/bin/env python

"""
A Python replacement for java.util.Properties class
This is modelled as closely as possible to the Java original.

Created - Anand B Pillai 
“”"

import sys,os
import re
import time

class IllegalArgumentException(Exception):

    def __init__(self, lineno, msg):
        self.lineno = lineno
        self.msg = msg

    def __str__(self):
        s=’Exception at line number %d => %s’ % (self.lineno, self.msg)
        return s

class Properties(object):
    “”" A Python replacement for java.util.Properties “”"

    def __init__(self, props=None):

        # Note: We don’t take a default properties object
        # as argument yet

        # Dictionary of properties.
        self._props = {}
        # Dictionary of properties with ‘pristine’ keys
        # This is used for dumping the properties to a file
        # using the ’store’ method
        self._origprops = {}

        # Dictionary mapping keys from property
        # dictionary to pristine dictionary
        self._keymap = {}

        self.othercharre = re.compile(r’(?        self.othercharre2 = re.compile(r’(s*=)|(s*:)’)
        self.bspacere = re.compile(r’(?!s$)’)

    def __str__(self):
        s=’{’
        for key,value in self._props.items():
            s = ”.join((s,key,’=',value,’, ‘))

        s=”.join((s[:-2],’}'))
        return s

    def __parse(self, lines):
        “”" Parse a list of lines and create
        an internal property dictionary “”"

        # Every line in the file must consist of either a comment
        # or a key-value pair. A key-value pair is a line consisting
        # of a key which is a combination of non-white space characters
        # The separator character between key-value pairs is a ‘=’,
        # ‘:’ or a whitespace character not including the newline.
        # If the ‘=’ or ‘:’ characters are found, in the line, even
        # keys containing whitespace chars are allowed.

        # A line with only a key according to the rules above is also
        # fine. In such case, the value is considered as the empty string.
        # In order to include characters ‘=’ or ‘:’ in a key or value,
        # they have to be properly escaped using the backslash character.

        # Some examples of valid key-value pairs:
        #
        # key     value
        # key=value
        # key:value
        # key     value1,value2,value3
        # key     value1,value2,value3
        #         value4, value5
        # key
        # This key= this value
        # key = value1 value2 value3

        # Any line that starts with a ‘#’ is considerered a comment
        # and skipped. Also any trailing or preceding whitespaces
        # are removed from the key/value.

        # This is a line parser. It parses the
        # contents like by line.

        lineno=0
        i = iter(lines)

        for line in i:
            lineno += 1
            line = line.strip()
            # Skip null lines
            if not line: continue
            # Skip lines which are comments
            if line[0] == ‘#’: continue
            # Some flags
            escaped=False
            # Position of first separation char
            sepidx = -1
            # A flag for performing wspace re check
            flag = 0
            # Check for valid space separation
            # First obtain the max index to which we
            # can search.
            m = self.othercharre.search(line)
            if m:
                first, last = m.span()
                start, end = 0, first
                flag = 1
                wspacere = re.compile(r’(?            else:
                if self.othercharre2.search(line):
                    # Check if either ‘=’ or ‘:’ is present
                    # in the line. If they are then it means
                    # they are preceded by a backslash.

                    # This means, we need to modify the
                    # wspacere a bit, not to look for
                    # : or = characters.
                    wspacere = re.compile(r’(?                start, end = 0, len(line)

            m2 = wspacere.search(line, start, end)
            if m2:
                # print ‘Space match=>’,line
                # Means we need to split by space.
                first, last = m2.span()
                sepidx = first
            elif m:
                # print ‘Other match=>’,line
                # No matching wspace char found, need
                # to split by either ‘=’ or ‘:’
                first, last = m.span()
                sepidx = last - 1
                # print line[sepidx]

            # If the last character is a backslash
            # it has to be preceded by a space in which
            # case the next line is read as part of the
            # same property
            while line[-1] == ”:
                # Read next line
                nextline = i.next()
                nextline = nextline.strip()
                lineno += 1
                # This line will become part of the value
                line = line[:-1] + nextline

            # Now split to key,value according to separation char
            if sepidx != -1:
                key, value = line[:sepidx], line[sepidx+1:]
            else:
                key,value = line,”

            self.processPair(key, value)

    def processPair(self, key, value):
        “”" Process a (key, value) pair “”"

        oldkey = key
        oldvalue = value

        # Create key intelligently
        keyparts = self.bspacere.split(key)
        # print keyparts

        strippable = False
        lastpart = keyparts[-1]

        if lastpart.find(’ ‘) != -1:
            keyparts[-1] = lastpart.replace(”,”)

        # If no backspace is found at the end, but empty
        # space is found, strip it
        elif lastpart and lastpart[-1] == ‘ ‘:
            strippable = True

        key = ”.join(keyparts)
        if strippable:
            key = key.strip()
            oldkey = oldkey.strip()

        oldvalue = self.unescape(oldvalue)
        value = self.unescape(value)

        self._props[key] = value.strip()

        # Check if an entry exists in pristine keys
        if self._keymap.has_key(key):
            oldkey = self._keymap.get(key)
            self._origprops[oldkey] = oldvalue.strip()
        else:
            self._origprops[oldkey] = oldvalue.strip()
            # Store entry in keymap
            self._keymap[key] = oldkey

    def escape(self, value):

        # Java escapes the ‘=’ and ‘:’ in the value
        # string with backslashes in the store method.
        # So let us do the same.
        newvalue = value.replace(’:',’:')
        newvalue = newvalue.replace(’=',’=')

        return newvalue

    def unescape(self, value):

        # Reverse of escape
        newvalue = value.replace(’:',’:')
        newvalue = newvalue.replace(’=',’=')

        return newvalue    

    def load(self, stream):
        “”" Load properties from an open file stream “”"

        # For the time being only accept file input streams
        if type(stream) is not file:
            raise TypeError,’Argument should be a file object!’
        # Check for the opened mode
        if stream.mode != ‘r’:
            raise ValueError,’Stream should be opened in read-only mode!’

        try:
            lines = stream.readlines()
            self.__parse(lines)
        except IOError, e:
            raise

    def getProperty(self, key):
        “”" Return a property for the given key “”"

        return self._props.get(key,”)

    def setProperty(self, key, value):
        “”" Set the property for the given key “”"

        if type(key) is str and type(value) is str:
            self.processPair(key, value)
        else:
            raise TypeError,’both key and value should be strings!’

    def propertyNames(self):
        “”" Return an iterator over all the keys of the property
        dictionary, i.e the names of the properties “”"

        return self._props.keys()

    def list(self, out=sys.stdout):
        “”" Prints a listing of the properties to the
        stream ‘out’ which defaults to the standard output “”"

        out.write(’– listing properties –n’)
        for key,value in self._props.items():
            out.write(”.join((key,’=',value,’n')))

    def store(self, out, header=”"):
        “”" Write the properties list to the stream ‘out’ along
        with the optional ‘header’ “”"

        if out.mode[0] != ‘w’:
            raise ValueError,’Steam should be opened in write mode!’

        try:
            out.write(”.join((’#',header,’n')))
            # Write timestamp
            tstamp = time.strftime(’%a %b %d %H:%M:%S %Z %Y’, time.localtime())
            out.write(”.join((’#',tstamp,’n')))
            # Write properties from the pristine dictionary
            for prop, val in self._origprops.items():
                out.write(”.join((prop,’=',self.escape(val),’n')))

            out.close()
        except IOError, e:
            raise

    def getPropertyDict(self):
        return self._props

    def __getitem__(self, name):
        “”" To support direct dictionary like access “”"

        return self.getProperty(name)

    def __setitem__(self, name, value):
        “”" To support direct dictionary like access “”"

        self.setProperty(name, value)

    def __getattr__(self, name):
        “”" For attributes not found in self, redirect
        to the properties dictionary “”"

        try:
            return self.__dict__[name]
        except KeyError:
            if hasattr(self._props,name):
                return getattr(self._props, name)

if __name__==”__main__”:
    p = Properties()
    p.load(open(’test2.properties’))
    p.list()
    print p
    print p.items()
    print p[’name3′]
    p[’name3′] = ‘changed = value’
    print p[’name3′]
    p[’new key’] = ‘new value’
    p.store(open(’test2.properties’,'w’))

Some showmedos:

http://showmedo.com/videos/python

wxPython:

http://wxpython.org/tut-intro.php

Wing IDE:

http://www.wingware.com/

OO Python:

http://cobweb.ecn.purdue.edu/~ece495f/Resources/quick_python_oo_review.pdf

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Journalism Is Not a Capital Crime By KHALED HOSSEINI

February 01st, 2008 | Category: The Wall Street Journal

For Hosseini fans:

http://online.wsj.com/article/SB120182626320733755.html

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