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Bring the Python XPCOM binding IO routines in line with Moz 1.4.

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mhammond%skippinet.com.au 2003-04-15 14:39:31 +00:00
parent 8ef3ab1a46
commit 09cdecfcf4
1 changed files with 18 additions and 24 deletions
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42
extensions/python/xpcom/file.py
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@ -45,14 +45,14 @@ from xpcom import components, Exception, _xpcom
import os
import threading # for locks.
NS_RDONLY = components.interfaces.nsIFileChannel.NS_RDONLY
NS_WRONLY = components.interfaces.nsIFileChannel.NS_WRONLY
NS_RDWR = components.interfaces.nsIFileChannel.NS_RDWR
NS_CREATE_FILE = components.interfaces.nsIFileChannel.NS_CREATE_FILE
NS_APPEND = components.interfaces.nsIFileChannel.NS_APPEND
NS_TRUNCATE = components.interfaces.nsIFileChannel.NS_TRUNCATE
NS_SYNC = components.interfaces.nsIFileChannel.NS_SYNC
NS_EXCL = components.interfaces.nsIFileChannel.NS_EXCL
NS_RDONLY = 0x01
NS_WRONLY = 0x02
NS_RDWR = 0x04
NS_CREATE_FILE = 0x08
NS_APPEND = 0x10
NS_TRUNCATE = 0x20
NS_SYNC = 0x40
NS_EXCL = 0x80
# A helper function that may come in useful
def LocalFileToURL(localFileName):
@ -62,13 +62,10 @@ def LocalFileToURL(localFileName):
.createInstance(components.interfaces.nsILocalFile)
localFile.initWithPath(localFileName)
# Use the IO Service to create the interface
# Or not - I don't know - I give up.
# Use the IO Service to create the interface, then QI for a FileURL
io_service = components.classes["@mozilla.org/network/io-service;1"] \
.getService(components.interfaces.nsIIOService)
url = io_service.newFileURI(localFile).queryInterface(components.interfaces.nsIFileURL)
# url = components.classes["@mozilla.org/network/standard-url;1"] \
# .createInstance(components.interfaces.nsIFileURL)
# Setting the "file" attribute causes initialization...
url.file = localFile
return url
@ -144,9 +141,7 @@ class URIFile(_File):
if hasattr(url, "queryInterface"):
url_ob = url
else:
url_ob = components.classes["@mozilla.org/network/standard-url;1"] \
.createInstance(components.interfaces.nsIURL)
url_ob.spec = url
url_ob = io_service.newURI(url, None, None)
# Mozilla asserts and starts saying "NULL POINTER" if this is wrong!
if not url_ob.scheme:
raise ValueError, ("The URI '%s' is invalid (no scheme)"
@ -168,8 +163,8 @@ class LocalFile(_File):
self.close()
file = components.classes['@mozilla.org/file/local;1'].createInstance("nsILocalFile")
file.initWithPath(name)
self.fileIO = components.classes['@mozilla.org/network/file-io;1'].createInstance("nsIFileIO")
if mode in ["w","a"]:
self.fileIO = components.classes["@mozilla.org/network/file-output-stream;1"].createInstance("nsIFileOutputStream")
if mode== "w":
if file.exists():
file.remove(0)
@ -178,24 +173,23 @@ class LocalFile(_File):
moz_mode = NS_APPEND
else:
assert 0, "Can't happen!"
self.fileIO.init(file, moz_mode, -1)
self.outputStream = self.fileIO.outputStream
self.fileIO.init(file, moz_mode, -1,0)
self.outputStream = self.fileIO
elif mode == "r":
self.fileIO.init(file, NS_RDONLY, -1)
self.inputStream = self.fileIO.inputStream
self.fileIO = components.classes["@mozilla.org/network/file-input-stream;1"].createInstance("nsIFileInputStream")
self.fileIO.init(file, NS_RDONLY, -1,0)
self.inputStream = components.classes["@mozilla.org/scriptableinputstream;1"].createInstance("nsIScriptableInputStream")
self.inputStream.init(self.fileIO)
else:
raise ValueError, "Unknown mode"
def close(self):
if self.fileIO is not None:
self.fileIO.close(0)
self.fileIO.close()
self.fileIO = None
_File.close(self)
def read(self, n = -1):
if n == -1:
n = self.fileIO.contentLength
return _File.read(self, n)