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R3600/modules/miscutil/lib/wml2html.py
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wml2html.py
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#!@PYTHON@
## $Id$
## CDS Invenio WebStyle templates.
## This file is part of CDS Invenio.
## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 CERN.
##
## CDS Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## CDS Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with CDS Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
wml2html -- Light Invenio style WML source to HTML target file converter.
Note: Deals only with <WEBURL> style of config variables and with
multilanguage text <lang><en>...</en></lang>.
"""
__revision__ = \
"$Id$"
try:
from invenio.config import cdslang
from invenio.webpage import page
except ImportError:
cdslang = 'en'
page = None
try:
from invenio.messages import \
gettext_set_language, \
wash_language
except ImportError:
cdslang = 'en'
gettext_set_language = lambda x: lambda y: y
wash_language = lambda x:x
import re
import getopt
import os
import sys
# Regular expression for finding text to be translated in format
# templates
translation_pattern = re.compile(r'''
_\((?P<word>.*?)\)_
''',\
re.IGNORECASE | re.DOTALL | re.VERBOSE)
# # Regular expression for finding comments
comments_pattern = re.compile(r'^\s*#.*$',\
re.MULTILINE)
# Regular expression for finding <lang:star: ..> tag
pattern_lang_star = re.compile(r'''
<(?P<tag>lang:star:) #<lang:star: tag (no matter case)
\s* #any number of white spaces
(?P<value>.*?) #value. any char that is not end tag
> #closing start tag
''',\
re.IGNORECASE | re.DOTALL | re.VERBOSE)
# Regular expression for finding <: print function(..) > tag
function_pattern = re.compile(r'''
<:\s*print\s*(?P<function>.*?)\s*\(\s*(\'|\")
(?P<param>.*?)
(\'|\")\s*\)\s*;\s*:>
''',\
re.IGNORECASE | re.DOTALL | re.VERBOSE)
# Regular expression for finding <!-- %s: %s --> tag in format templates,
# where %s will be replaced at run time
pattern_tag = r'''
<!--\s*(?P<tag>%s) #<!-- %%s tag (no matter case)
\s*:\s*
(?P<value>.*?) #description value. any char that is not end tag
(\s*-->) #end tag
'''
# List of available tags in wml, and the pattern to find it
pattern_tags = {'WML-Page-Title': '',
'WML-Page-Navtrail-Previous-Links': '',
'WML-Page-Navbar-Name': '',
'WML-Page-Navtrail-Body': '',
'WML-Page-Navbar-Select': '',
'WML-Page-Description': '',
'WML-Page-Keywords': '',
'WML-Page-Header-Add': '',
'WML-Page-Box-Left-Top-Add': '',
'WML-Page-Box-Left-Bottom-Add': '',
'WML-Page-Box-Right-Top-Add': '',
'WML-Page-Box-Right-Bottom-Add': '',
'WML-Page-Footer-Add': ''
}
for tag in pattern_tags.keys():
pattern_tags[tag] = re.compile(pattern_tag % tag, \
re.IGNORECASE | re.DOTALL | re.VERBOSE)
cdslangs = []
try:
cdslangs = [lang.strip() for lang in \
file(os.path.abspath(sys.path[0]+'/../../../po/LINGUAS'),'r').readlines() \
if not lang.strip().startswith('#') and \
not lang.strip() == '']
except Exception, e:
print e
print "Cannot read LINGUAS file"
sys.exit(1)
# Regular expression for finding variable defined in config file:
# Eg: <define-tag CDSLANG whitespace=delete>
# en
# </define-tag>
# TODO: extend to deal with more parameters than just
# 'whitespace=delete' ?
pattern_define_tag = re.compile(r'''
<define-tag \s*
(?P<tag>\S*?) \s*
(?P<whitespace>whitespace\s*=\s*delete)\s*
> #closing start tag
(?P<value>.*?)
(</define-tag\s*>) #end tag
''', re.IGNORECASE | re.DOTALL | re.VERBOSE)
# Regular expression for finding <lang>...</lang> tag in format templates
pattern_lang = re.compile(r'''
<lang #<lang tag (no matter case)
\s*
(?P<keep>keep=all)*
\s* #any number of white spaces
> #closing <lang> start tag
(?P<langs>.*?) #anything but the next group (greedy)
(</lang\s*>) #end tag
''', re.IGNORECASE | re.DOTALL | re.VERBOSE)
# Builds regular expression for finding each known language in <lang> tags
ln_pattern_text = r"<("
for lang in cdslangs:
ln_pattern_text += lang +r"|"
ln_pattern_text = ln_pattern_text.rstrip(r"|")
ln_pattern_text += r")>(.*?)</\1>"
ln_pattern = re.compile(ln_pattern_text, re.IGNORECASE | re.DOTALL)
def transform(wml_text, config_text='', lns=[cdslang], verbose=0, req=None, header_p=True):
"""
Transform a WML into html
This is made through a serie of transformations, mainly substitutions.
Parameters:
- wml_text : *string* the WML input to transform to HTML
- config_text: *string* the configuration with the defined tags
- lns : *list[string]* the list of languages to return
- header_p : *boolean* when True, print html headers
"""
body = wml_text
parameters = {}
def get_param_and_remove(match):
"""
Analyses 'match', get the parameter and return empty string to remove it.
Called by substitution in 'transform(...)'
@param match a match object corresponding to the special tag that must be interpreted
"""
tag = match.group("tag")
value = match.group("value")
parameters[tag] = value
return ''
def translate(match):
"""
Translate matching values
"""
word = match.group("word")
translated_word = _(word)
return translated_word
def current_lang(match):
"""
Returns the value with * char replaced by current language
"""
value = match.group("value")
value = value.replace('*', ln)
return value
def function_print(match):
"""
Format the given document version
"""
function = match.group("function")
param = match.group("param")
out = ''
if function == 'generate_pretty_revision_date_string':
# Input: CVS DOLLAR Id DOLLAR string
# Output: nicely formatted revision/date number suitable for Admin Guides
# Example: ``DOLLAR Id: webcoll.wml,v 1.41 2004/04/21 11:20:06 tibor Exp DOLLAR''
# will generate output like ``CDS Invenio/0
(junk, filename, revision, date, junk, junk, junk, junk) = param.split(' ')
out = revision + ', ' + date
elif function == 'generate_language_list_for_python':
# Return Python-ready language list out of user-configured WML language list.
# May return short or long version, depending on the first argument.
# Output example: ['en','fr']
# Output example: [['en','English'],['fr','French']]
# TODO MAYBE
pass
return out
# 1 step
## First filter, used to remove comments
#wml_text = comments_pattern.sub('', wml_text)
uncommented_wml_text = ''
for line in wml_text.splitlines(True):
if not line.strip().startswith('#'):
uncommented_wml_text += line
wml_text = uncommented_wml_text.replace('<protect>', '')
wml_text = wml_text.replace('</protect>', '')
# 2 step
## Execute custom functions
wml_text = function_pattern.sub(function_print, wml_text)
html_texts = []
defined_tags = parse_config(config_text)
# Language dependent filters
for ln in lns:
_ = gettext_set_language(ln)
# 3 step
## Filter used to translate string in _(..)_
localized_wml_text = translation_pattern.sub(translate, wml_text)
# 4 step
## Print current language 'en', 'fr', .. instead of
## * in <lang:star ..> tags
localized_wml_text = pattern_lang_star.sub(current_lang, localized_wml_text)
# 5 step
## Filter out languages
localized_wml_text = filter_languages(localized_wml_text, ln, defined_tags)
# 6 Step
## Replace defined tags with their value from config file
## Eg. replace <weburl> with 'http://cdsweb.cern.ch/':
for defined_tag, value in defined_tags.iteritems():
localized_wml_text = localized_wml_text.replace('<%s>' % defined_tag, value)
# 7 Step
# Second language filtering, in case some <lang> tags have been
# introduced by previous step
localized_wml_text = filter_languages(localized_wml_text, ln)
# 8 step
## Get the parameters defined in dedicated tags in the wml,
## and use them later to build the page:
## title
## navtrail_previous_links
## navbar_name
## navtrail_body
## navbar_select
## description
## keywords
## cdspageheaderadd
## cdspageboxlefttopadd
## cdspageboxleftbottomadd
## cdspageboxrighttopadd
## cdspageboxrightbottomadd
## cdspagefooteradd
##
## if header_p == True:
## localized_body = localized_wml_text
## for tag, pattern in pattern_tags.iteritems():
## localized_body = pattern.sub(get_param_and_remove, localized_body)
## if page is not None:
## out = page(title=parameters.get('WML-Page-Title', ''),
## body=localized_body,
## navtrail=parameters.get('WML-Page-Navtrail-Previous-Links', ''), # or navtrail_body ?
## description=parameters.get('WML-Page-Description', ''),
## keywords=parameters.get('WML-Page-Keywords', ''),
## uid=0,
## cdspageheaderadd=parameters.get('WML-Page-Header-Add', ''),
## cdspageboxlefttopadd=parameters.get('WML-Page-Box-Left-Top-Add', ''),
## cdspageboxleftbottomadd=parameters.get('WML-Page-Box-Left-Bottom-Add', ''),
## cdspageboxrighttopadd=parameters.get('WML-Page-Box-Right-Top-Add', ''),
## cdspageboxrightbottomadd=parameters.get('WML-Page-Box-Right-Bottom-Add', ''),
## cdspagefooteradd=parameters.get('WML-Page-Footer-Add', ''),
## lastupdated="",
## language=ln,
## verbose=verbose,
## titleprologue="",
## titleepilogue="",
## secure_page_p=0,
## req=req,
## errors=[],
## warnings=[],
## navmenuid=parameters.get('WML-Page-Navbar-Name', ''),
## navtrail_append_title_p=1,
## of="")
## else:
## out = localized_wml_text
## else:
## out = localized_wml_text
out = localized_wml_text
html_texts.append((ln, out))
return html_texts
def filter_languages(text, ln='en', defined_tags=None):
"""
Filters the language tags that do not correspond to the specified language.
Eg: <lang><en>A book</en><de>Ein Buch</de></lang> will return
- with ln = 'de': "Ein Buch"
- with ln = 'en': "A book"
- with ln = 'fr': "A book"
Also replace variables such as <WEBURL> and <CDSNAMEINTL> inside
<lang><..><..></lang> tags in order to print them with the correct
language
@param text the input text
@param ln the language that is NOT filtered out from the input
@return the input text as string with unnecessary languages filtered out
@see bibformat_engine.py, from where this function was originally extracted
"""
# First define search_lang_tag(match) and clean_language_tag(match), used
# in re.sub() function
def search_lang_tag(match):
"""
Searches for the <lang>...</lang> tag and remove inner localized tags
such as <en>, <fr>, that are not current_lang.
If current_lang cannot be found inside <lang> ... </lang>, try to use 'cdslang'
@param match a match object corresponding to the special tag that must be interpreted
"""
current_lang = ln
# If <lang keep=all> is used, keep all languages
keep = False
if match.group("keep") is not None:
keep = True
def clean_language_tag(match):
"""
Return tag text content if tag language of match is output language.
Called by substitution in 'filter_languages(...)'
@param match a match object corresponding to the special tag that must be interpreted
"""
if match.group(1) == current_lang or \
keep == True:
# Additional step:
# if there are tags such as <WEBURL> and <CDSNAMEINTL>,
# replace them with their value, and apply the correct
# language to them (especially CDSNAMEINTL)
localized_text = match.group(2)
if defined_tags is not None:
for defined_tag, value in defined_tags.iteritems():
localized_text = localized_text.replace('<%s>' % defined_tag, value)
localized_text = filter_languages(localized_text, match.group(1))
return localized_text # match.group(2)
else:
return ""
# End of clean_language_tag(..)
lang_tag_content = match.group("langs")
# Try to find tag with current lang. If it does not exists,
# then current_lang becomes cdslang until the end of this
# replace
pattern_current_lang = re.compile(r"<("+current_lang+ \
r")\s*>(.*?)(</"+current_lang+r"\s*>)", re.IGNORECASE | re.DOTALL)
if re.search(pattern_current_lang, lang_tag_content) is None:
current_lang = cdslang
cleaned_lang_tag = ln_pattern.sub(clean_language_tag, lang_tag_content)
# Remove empty lines and strip
# Only if 'keep' has not been set
if keep == False:
stripped_text = ''
for line in cleaned_lang_tag.splitlines(True):
if line.strip():
stripped_text += line.strip()
cleaned_lang_tag = stripped_text
return cleaned_lang_tag
# End of search_lang_tag(..)
filtered_text = pattern_lang.sub(search_lang_tag, text)
return filtered_text
def parse_config(config_text):
"""
Get the variables defined in dedicated tags in the config file,
and return them as dict.
"""
defined_tags = {}
for match in pattern_define_tag.finditer(config_text):
tag = match.group('tag')
value = match.group('value')
delete_whitespace = match.group('whitespace')
if 'delete' in delete_whitespace:
value = value.strip()
# Also replace <%s> with already parsed tags
for defined_tag, defined_value in defined_tags.iteritems():
value = value.replace('<%s>' % defined_tag, defined_value)
defined_tags[tag] = value
return defined_tags
def usage(exitcode=1, msg=""):
"""Prints usage info."""
if msg:
sys.stderr.write("Error: %s.\n" % msg)
sys.stderr.write("Usage: %s [options]\n" % sys.argv[0])
sys.stderr.write(" -h, --help \t\t Print this help.\n")
sys.stderr.write(" -V, --version \t\t Print version information.\n")
sys.stderr.write(" -v, --verbose=LEVEL \t\t Verbose level (0=min,1=normal,9=max).\n")
sys.stderr.write(" -l, --language=LN1,LN2,.. \t\t Language(s) of the output (default all)\n")
sys.stderr.write(" -i, --input=input.html.wml \t\t Input WML file\n")
sys.stderr.write(" -o, --output=output.html \t\t Path of the output file (default: same as input, without .wml extension)\n")
sys.stderr.write(" -c, --config=config.wml \t\t Config file\n")
sys.stderr.write("\n")
sys.stderr.write(" Example: wml2html -i inputfile.wml -o outputfile.html\n")
sys.stderr.write(" Example: wml2html -i inputfile.wml -o outputfile.html -l en,fr,\n")
sys.stderr.write(" Example: wml2html.py -i ../../miscutil/lib/config.py.wml -c ../../../config/config.wml -c ../../../config/configbis.wml -o /tmp/config.py -l en ")
sys.stderr.write("\n")
sys.exit(exitcode)
if __name__ == "__main__":
options = {'language':cdslangs, 'verbose':0}
try:
opts, args = getopt.getopt(sys.argv[1:],
"hVv:l:i:o:c:",
["help",
"version",
"verbose=",
"language=",
"config=",
"input=",
"output="])
except getopt.GetoptError, err:
usage(1, err)
try:
for opt in opts:
if opt[0] in ["-h", "--help"]:
usage(0)
elif opt[0] in ["-V", "--version"]:
print __revision__
sys.exit(0)
elif opt[0] in ["-v", "--verbose"]:
options["verbose"] = int(opt[1])
elif opt[0] in ["-l", "--language"]:
options["language"] = [wash_language(lang.strip().lower()) for lang in opt[1].split(',')]
elif opt[0] in ["-i", "--input"]:
options["inputfile"] = os.path.abspath(opt[1])
elif opt[0] in ["-c", "--config"]:
if not options.has_key("configfile"):
options["configfile"] = []
options["configfile"].append(os.path.abspath(opt[1]))
elif opt[0] in ["-o", "--output"]:
options["outputfile"] = opt[1]
except StandardError, e:
usage(e)
if not options.has_key("inputfile"):
usage(0)
if not options.has_key("outputfile"):
outputfile_components = options["inputfile"].split('.')
options["outputfile"] = '.'.join(outputfile_components[:-1])
if len(options["language"]) > 1 and '%(ln)s' not in options["outputfile"]:
outputfile_components = options["outputfile"].split('.')
options["outputfile"] = '.'.join(outputfile_components[:-1]) +'.%(ln)s.' +\
outputfile_components[-1]
options["outputfile"] = os.path.abspath(options["outputfile"])
try:
# Load input file
wml_text = file(options["inputfile"], 'r').read()
except:
usage(1, "Could not open file %s" % options["inputfile"])
config_text = ''
if options.has_key("configfile"):
for config_file in options["configfile"]:
try:
# Load config file(s).
# We can simply concatenate them
config_text += file(config_file, 'r').read()
except Exception,e :
usage(1, "Could not open file %s" % config_file)
# Print HTML header only when doing html output
if options["outputfile"].endswith('html') or \
options["outputfile"].endswith('htm') or \
options["outputfile"].endswith('php'):
header_p = True
else:
header_p = False
# Then process for each language
html_texts = transform(wml_text,
config_text,
options["language"],
verbose=options["verbose"],
req=None,
header_p=header_p)
for lang, html_text in html_texts:
html_file = open(options["outputfile"] % {'ln':lang}, 'w')
html_file.write(html_text)
html_file.close()
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