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# -*- coding: utf-8 -*-
# Copyright 2019-2022 Jean-Pierre LEDURE, Rafael LIMA, Alain ROMEDENNE
# ======================================================================================================================
# === The ScriptForge library and its associated libraries are part of the LibreOffice project. ===
# === Full documentation is available on https://help.libreoffice.org/ ===
# ======================================================================================================================
# ScriptForge 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.
# ScriptForge is free software; you can redistribute it and/or modify it under the terms of either (at your option):
# 1) The Mozilla Public License, v. 2.0. If a copy of the MPL was not
# distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/ .
# 2) The GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. If a copy of the LGPL was not
# distributed with this file, see http://www.gnu.org/licenses/ .
"""
Collection of Python helper functions called from the ScriptForge Basic libraries
to execute specific services that are not or not easily available from Basic directly.
When relevant, the methods present in the ScriptForge Python module (scriptforge.py) might call the
functions below for compatibility reasons.
"""
import getpass
import os
import platform
import hashlib
import filecmp
import webbrowser
import json
class _Singleton(type):
"""
A Singleton design pattern
Credits: « Python in a Nutshell » by Alex Martelli, O'Reilly
"""
instances = {}
def __call__(cls, *args, **kwargs):
if cls not in cls.instances:
cls.instances[cls] = super(_Singleton, cls).__call__(*args, **kwargs)
return cls.instances[cls]
# #################################################################
# Dictionary service
# #################################################################
def _SF_Dictionary__ConvertToJson(propval, indent = None) -> str:
# used by Dictionary.ConvertToJson() Basic method
"""
Given an array of PropertyValues as argument, convert it to a JSON string
"""
# Array of property values => Dict(ionary) => JSON
pvDict = {}
for pv in propval:
pvDict[pv.Name] = pv.Value
return json.dumps(pvDict, indent=indent, skipkeys=True)
def _SF_Dictionary__ImportFromJson(jsonstr: str): # used by Dictionary.ImportFromJson() Basic method
"""
Given a JSON string as argument, convert it to a list of tuples (name, value)
The value must not be a (sub)dict. This doesn't pass the python-basic bridge.
"""
# JSON => Dictionary => Array of tuples/lists
dico = json.loads(jsonstr)
result = []
for key in iter(dico):
value = dico[key]
item = value
if isinstance(value, dict): # check that first level is not itself a (sub)dict
item = None
elif isinstance(value, list): # check every member of the list is not a (sub)dict
for i in range(len(value)):
if isinstance(value[i], dict): value[i] = None
result.append((key, item))
return result
# #################################################################
# Exception service
# #################################################################
def _SF_Exception__PythonPrint(string: str) -> bool:
# used by SF_Exception.PythonPrint() Basic method
"""
Write the argument to stdout.
If the APSO shell console is active, the argument will be displayed in the console window
"""
print(string)
return True
# #################################################################
# FileSystem service
# #################################################################
def _SF_FileSystem__CompareFiles(filename1: str, filename2: str, comparecontents=True) -> bool:
# used by SF_FileSystem.CompareFiles() Basic method
"""
Compare the 2 files, returning True if they seem equal, False otherwise.
By default, only their signatures (modification time, ...) are compared.
When comparecontents == True, their contents are compared.
"""
try:
return filecmp.cmp(filename1, filename2, not comparecontents)
except Exception:
return False
def _SF_FileSystem__GetFilelen(systemfilepath: str) -> str: # used by SF_FileSystem.GetFilelen() Basic method
return str(os.path.getsize(systemfilepath))
def _SF_FileSystem__HashFile(filename: str, algorithm: str) -> str: # used by SF_FileSystem.HashFile() Basic method
"""
Hash a given file with the given hashing algorithm
cfr. https://www.pythoncentral.io/hashing-files-with-python/
Example
hash = _SF_FileSystem__HashFile('myfile.txt','MD5')
"""
algo = algorithm.lower()
try:
if algo in hashlib.algorithms_guaranteed:
BLOCKSIZE = 65535 # Provision for large size files
if algo == 'md5':
hasher = hashlib.md5()
elif algo == 'sha1':
hasher = hashlib.sha1()
elif algo == 'sha224':
hasher = hashlib.sha224()
elif algo == 'sha256':
hasher = hashlib.sha256()
elif algo == 'sha384':
hasher = hashlib.sha384()
elif algo == 'sha512':
hasher = hashlib.sha512()
else:
return ''
with open(filename, 'rb') as file: # open in binary mode
buffer = file.read(BLOCKSIZE)
while len(buffer) > 0:
hasher.update(buffer)
buffer = file.read(BLOCKSIZE)
return hasher.hexdigest()
else:
return ''
except Exception:
return ''
def _SF_FileSystem__Normalize(systemfilepath: str) -> str:
# used by SF_FileSystem.Normalize() Basic method
"""
Normalize a pathname by collapsing redundant separators and up-level references so that
A//B, A/B/, A/./B and A/foo/../B all become A/B.
On Windows, it converts forward slashes to backward slashes.
"""
return os.path.normpath(systemfilepath)
# #################################################################
# Platform service
# #################################################################
def _SF_Platform(propertyname: str): # used by SF_Platform Basic module
"""
Switch between SF_Platform properties (read the documentation about the ScriptForge.Platform service)
"""
pf = Platform()
if propertyname == 'Architecture':
return pf.Architecture
elif propertyname == 'ComputerName':
return pf.ComputerName
elif propertyname == 'CPUCount':
return pf.CPUCount
elif propertyname == 'CurrentUser':
return pf.CurrentUser
elif propertyname == 'Machine':
return pf.Machine
elif propertyname == 'OSName':
return pf.OSName
elif propertyname == 'OSPlatform':
return pf.OSPlatform
elif propertyname == 'OSRelease':
return pf.OSRelease
elif propertyname == 'OSVersion':
return pf.OSVersion
elif propertyname == 'Processor':
return pf.Processor
elif propertyname == 'PythonVersion':
return pf.PythonVersion
else:
return None
class Platform(object, metaclass = _Singleton):
@property
def Architecture(self): return platform.architecture()[0]
@property # computer's network name
def ComputerName(self): return platform.node()
@property # number of CPU's
def CPUCount(self): return os.cpu_count()
@property
def CurrentUser(self):
try:
return getpass.getuser()
except Exception:
return ''
@property # machine type e.g. 'i386'
def Machine(self): return platform.machine()
@property # system/OS name e.g. 'Darwin', 'Java', 'Linux', ...
def OSName(self): return platform.system().replace('Darwin', 'macOS')
@property # underlying platform e.g. 'Windows-10-...'
def OSPlatform(self): return platform.platform(aliased = True)
@property # system's release e.g. '2.2.0'
def OSRelease(self): return platform.release()
@property # system's version
def OSVersion(self): return platform.version()
@property # real processor name e.g. 'amdk'
def Processor(self): return platform.processor()
@property # Python major.minor.patchlevel
def PythonVersion(self): return 'Python ' + platform.python_version()
# #################################################################
# Session service
# #################################################################
def _SF_Session__OpenURLInBrowser(url: str): # Used by SF_Session.OpenURLInBrowser() Basic method
"""
Display url using the default browser
"""
try:
webbrowser.open(url, new = 2)
finally:
return None
# #################################################################
# String service
# #################################################################
def _SF_String__HashStr(string: str, algorithm: str) -> str: # used by SF_String.HashStr() Basic method
"""
Hash a given UTF-8 string with the given hashing algorithm
Example
hash = _SF_String__HashStr('This is a UTF-8 encoded string.','MD5')
"""
algo = algorithm.lower()
try:
if algo in hashlib.algorithms_guaranteed:
ENCODING = 'utf-8'
bytestring = string.encode(ENCODING) # Hashing functions expect bytes, not strings
if algo == 'md5':
hasher = hashlib.md5(bytestring)
elif algo == 'sha1':
hasher = hashlib.sha1(bytestring)
elif algo == 'sha224':
hasher = hashlib.sha224(bytestring)
elif algo == 'sha256':
hasher = hashlib.sha256(bytestring)
elif algo == 'sha384':
hasher = hashlib.sha384(bytestring)
elif algo == 'sha512':
hasher = hashlib.sha512(bytestring)
else:
return ''
return hasher.hexdigest()
else:
return ''
except Exception:
return ''
# #################################################################
# lists the scripts, that shall be visible inside the Basic/Python IDE
# #################################################################
g_exportedScripts = ()
if __name__ == "__main__":
print(_SF_Platform('Architecture'))
print(_SF_Platform('ComputerName'))
print(_SF_Platform('CPUCount'))
print(_SF_Platform('CurrentUser'))
print(_SF_Platform('Machine'))
print(_SF_Platform('OSName'))
print(_SF_Platform('OSPlatform'))
print(_SF_Platform('OSRelease'))
print(_SF_Platform('OSVersion'))
print(_SF_Platform('Processor'))
print(_SF_Platform('PythonVersion'))
#
print(hashlib.algorithms_guaranteed)
print(_SF_FileSystem__HashFile('/opt/libreoffice7.3/program/libbootstraplo.so', 'md5'))
print(_SF_FileSystem__HashFile('/opt/libreoffice7.3/share/Scripts/python/Capitalise.py', 'sha512'))
print(_SF_FileSystem__Normalize('A/foo/../B/C/./D//E'))
#
print(_SF_String__HashStr('œ∑¡™£¢∞§¶•ªº–≠œ∑´®†¥¨ˆøπ“‘åß∂ƒ©˙∆˚¬', 'MD5')) # 616eb9c513ad07cd02924b4d285b9987
#
# _SF_Session__OpenURLInBrowser('https://docs.python.org/3/library/webbrowser.html')
#
js = """
{"firstName": "John","lastName": "Smith","isAlive": true,"age": 27,
"address": {"streetAddress": "21 2nd Street","city": "New York","state": "NY","postalCode": "10021-3100"},
"phoneNumbers": [{"type": "home","number": "212 555-1234"},{"type": "office","number": "646 555-4567"}],
"children": ["Q", "M", "G", "T"],"spouse": null}
"""
arr = _SF_Dictionary__ImportFromJson(js)
print(arr)
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