Viewing file:  RecentFiles.py (5.15 KB) -rw-r--r--
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"""
Implementation of the XDG Recent File Storage Specification Version 0.2
http://standards.freedesktop.org/recent-file-spec
"""
import xml.dom.minidom, xml.sax.saxutils
import os, time, fcntl
from xdg.Exceptions import *
class RecentFiles:
def __init__(self):
self.RecentFiles = []
self.filename = ""
def parse(self, filename=None):
if not filename:
filename = os.path.join(os.getenv("HOME"), ".recently-used")
try:
doc = xml.dom.minidom.parse(filename)
except IOError:
raise ParsingError('File not found', filename)
except xml.parsers.expat.ExpatError:
raise ParsingError('Not a valid .menu file', filename)
self.filename = filename
for child in doc.childNodes:
if child.nodeType == xml.dom.Node.ELEMENT_NODE:
if child.tagName == "RecentFiles":
for recent in child.childNodes:
if recent.nodeType == xml.dom.Node.ELEMENT_NODE:
if recent.tagName == "RecentItem":
self.__parseRecentItem(recent)
self.sort()
def __parseRecentItem(self, item):
recent = RecentFile()
self.RecentFiles.append(recent)
for attribute in item.childNodes:
if attribute.nodeType == xml.dom.Node.ELEMENT_NODE:
if attribute.tagName == "URI":
recent.URI = attribute.childNodes[0].nodeValue
elif attribute.tagName == "Mime-Type":
recent.MimeType = attribute.childNodes[0].nodeValue
elif attribute.tagName == "Timestamp":
recent.Timestamp = attribute.childNodes[0].nodeValue
elif attribute.tagName == "Private":
recent.Prviate = True
elif attribute.tagName == "Groups":
for group in attribute.childNodes:
if group.nodeType == xml.dom.Node.ELEMENT_NODE:
if group.tagName == "Group":
recent.Groups.append(group.childNodes[0].nodeValue)
def write(self, filename=None):
if not filename and not self.filename:
raise ParsingError('File not found', filename)
elif not filename:
filename = self.filename
f = open(filename, "w")
fcntl.lockf(f, fcntl.LOCK_EX)
f.write('<?xml version="1.0"?>\n')
f.write("<RecentFiles>\n")
for r in self.RecentFiles:
f.write(" <RecentItem>\n")
f.write(" <URI>%s</URI>\n" % xml.sax.saxutils.escape(r.URI))
f.write(" <Mime-Type>%s</Mime-Type>\n" % r.MimeType)
f.write(" <Timestamp>%s</Timestamp>\n" % r.Timestamp)
if r.Private == True:
f.write(" <Private/>\n")
if len(r.Groups) > 0:
f.write(" <Groups>\n")
for group in r.Groups:
f.write(" <Group>%s</Group>\n" % group)
f.write(" </Groups>\n")
f.write(" </RecentItem>\n")
f.write("</RecentFiles>\n")
fcntl.lockf(f, fcntl.LOCK_UN)
f.close()
def getFiles(self, mimetypes=None, groups=None, limit=0):
tmp = []
i = 0
for item in self.RecentFiles:
if groups:
for group in groups:
if group in item.Groups:
tmp.append(item)
i += 1
elif mimetypes:
for mimetype in mimetypes:
if mimetype == item.MimeType:
tmp.append(item)
i += 1
else:
if item.Private == False:
tmp.append(item)
i += 1
if limit != 0 and i == limit:
break
return tmp
def addFile(self, item, mimetype, groups=None, private=False):
# check if entry already there
if item in self.RecentFiles:
index = self.RecentFiles.index(item)
recent = self.RecentFiles[index]
else:
# delete if more then 500 files
if len(self.RecentFiles) == 500:
self.RecentFiles.pop()
# add entry
recent = RecentFile()
self.RecentFiles.append(recent)
recent.URI = item
recent.MimeType = mimetype
recent.Timestamp = int(time.time())
recent.Private = private
recent.Groups = groups
self.sort()
def deleteFile(self, item):
if item in self.RecentFiles:
self.RecentFiles.remove(item)
def sort(self):
self.RecentFiles.sort()
self.RecentFiles.reverse()
class RecentFile:
def __init__(self):
self.URI = ""
self.MimeType = ""
self.Timestamp = ""
self.Private = False
self.Groups = []
def __cmp__(self, other):
return cmp(self.Timestamp, other.Timestamp)
def __eq__(self, other):
if self.URI == str(other):
return True
else:
return False
def __str__(self):
return self.URI
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