fetcher'in trivial hali..

yuksek lisans seylerim, yuksek lisans seylerim.

src/fetcher.py

@@ -0,0 +1,72 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+import urlparse
+import urllib
+import os
+from sys import argv
+from sys import exit
+
+class FetchError (Exception):
+	pass
+
+class Fetcher:
+	"""Yet another Pisi tool for fetching files from various sources.."""
+	def __init__(self, uri):
+		self.uri = uri
+		self.filedest = "/var/tmp/pisi/cache"
+		self.builddir = "/var/tmp/pisi/work"
+		self.scheme = "file"
+		self.netloc = ""
+		self.filepath = ""
+		self.filename = ""
+
+	def fetch (self):
+		from string import split
+		u = urlparse.urlparse(self.uri)
+		self.scheme, self.netloc, self.filepath = u[0], u[1], u[2]
+		self.filename = split(self.filepath, "/")[-1:][0]
+		
+		if self.filename == "":
+			self.err("filename error")
+
+		if os.access(self.filedest, os.W_OK) == False:
+			self.err("no perm to write destination")
+
+		scheme_err = lambda: self.err("unexpected scheme (expecting file, http or ftp)")
+
+		actions = {
+			'file': self.fetchLocalFile,
+			'http': self.fetchRemoteFile,
+			'ftp' : self.fetchRemoteFile			
+			}; actions.get(self.scheme, scheme_err)()
+	
+	def fetchLocalFile (self):
+		from shutil import copyfile
+
+		if os.access(self.filepath, os.F_OK) == False:
+			self.err("no such file or no perm to read")
+
+		copyfile(self.filepath, self.filedest + "/" + self.filename)	
+		
+	def fetchRemoteFile (self):
+		file = urllib.urlopen(self.uri)
+		dest = open(self.filedest + "/" + self.filename , "w")
+		dest.write(file.read())
+	
+	def err (self, error):
+		raise FetchError, error
+	
+def usage():
+	print "Usage: %s URI" % argv[0]
+
+def main():
+	if len(argv) != 2:
+		usage()
+		exit(1)
+		
+	f = Fetcher(argv[1])
+	f.fetch()
+
+if __name__ == "__main__":
+	main()

src/tests/fetch_file

@@ -0,0 +1,20 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# mkdir /var/tmp/pisi/cache
+# ./fetch_file file:///etc/passwd
+# ./fetch http://www.uludag.org.tr/belgeler/gelistirici/gelistirici.pdf
+# ./fetch_file ftp://ftp.uludag.org.tr/pub/md5summer.exe
+# ls /var/tmp/pisi/cache
+
+import sys
+sys.path.append("..")
+import fetcher
+
+
+if len(sys.argv) == 2:
+	obj = fetcher.Fetcher(sys.argv[1])
+	obj.fetch()
+else:
+	sys.exit(0)
+