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# -*- coding: utf-8 -*-
"""
(C) 2014-2018 Roman Sirokov and contributors
Licensed under BSD license
http://github.com/r0x0r/pywebview/
"""
import os
import re
import sys
import platform
from .js import api, npo
default_html = '<!doctype html><html><head></head><body></body></html>'
def base_uri(relative_path=''):
""" Get absolute path to resource, works for dev and for PyInstaller """
try:
# PyInstaller creates a temp folder and stores path in _MEIPASS
base_path = sys._MEIPASS
except Exception:
if 'pytest' in sys.modules:
for arg in reversed(sys.argv):
path = os.path.realpath(arg)
if os.path.exists(path):
base_path = path if os.path.isdir(path) else os.path.dirname(path)
break
else:
base_path = os.path.dirname(os.path.realpath(sys.argv[0]))
if not os.path.exists(base_path):
raise ValueError('Path %s does not exist' % base_path)
return 'file://%s' % os.path.join(base_path, relative_path)
def convert_string(string):
if sys.version < '3':
return unicode(string)
else:
return str(string)
def parse_file_type(file_type):
'''
:param file_type: file type string 'description (*.file_extension1;*.file_extension2)' as required by file filter in create_file_dialog
:return: (description, file extensions) tuple
'''
valid_file_filter = r'^([\w ]+)\((\*(?:\.(?:\w+|\*))*(?:;\*\.\w+)*)\)$'
match = re.search(valid_file_filter, file_type)
if match:
return match.group(1).rstrip(), match.group(2)
else:
raise ValueError('{0} is not a valid file filter'.format(file_type))
def parse_api_js(api_instance):
func_list = [str(f) for f in dir(api_instance) if callable(getattr(api_instance, f)) and str(f)[0] != '_']
js_code = npo.src + api.src % func_list
return js_code
def escape_string(string):
return string\
.replace('\\', '\\\\') \
.replace('"', r'\"') \
.replace('\n', r'\n')\
.replace('\r', r'\r')
def transform_url(url):
if url and ':' not in url:
return base_uri(url)
else:
return url
def make_unicode(string):
"""
Python 2 and 3 compatibility function that converts a string to Unicode. In case of Unicode, the string is returned
unchanged
:param string: input string
:return: Unicode string
"""
if sys.version < '3' and isinstance(string, str):
return unicode(string.decode('utf-8'))
return string
def escape_line_breaks(string):
return string.replace('\\n', '\\\\n').replace('\\r', '\\\\r')
def inject_base_uri(content, base_uri):
pattern = '<%s(?:[\s]+[^>]*|)>'
base_tag = '<base href="%s">' % base_uri
match = re.search(pattern % 'base', content)
if match:
return content
match = re.search(pattern % 'head', content)
if match:
tag = match.group()
return content.replace(tag, tag + base_tag)
match = re.search(pattern % 'html', content)
if match:
tag = match.group()
return content.replace(tag, tag + base_tag)
match = re.search(pattern % 'body', content)
if match:
tag = match.group()
return content.replace(tag, base_tag + tag)
return base_tag + content
def interop_dll_path():
dll_name = 'WebBrowserInterop.x64.dll' if platform.architecture()[0] == '64bit' else 'WebBrowserInterop.x86.dll'
# Unfrozen path
dll_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'lib', dll_name)
if os.path.exists(dll_path):
return dll_path
# Frozen path, dll in the same dir as the executable
dll_path = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), dll_name)
if os.path.exists(dll_path):
return dll_path
try:
# Frozen path packed as onefile
dll_path = os.path.join(sys._MEIPASS, dll_name)
if os.path.exists(dll_path):
return dll_path
except Exception:
pass
raise Exception('Cannot find WebBrowserInterop.dll')
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