404main changes

404main

@@ -31,7 +31,7 @@ def find_main(pack):
 	global packages
 	
 	# Retrieve information about the package
-	out = subprocess.Popen('apt-cache madison ' + pack + '  | grep hardy | grep -m 1 Packages', shell=True, stdout=subprocess.PIPE).stdout.read()
+	out = subprocess.Popen('apt-cache madison ' + pack + '  | grep ' + distro + ' | grep -m 1 Packages', shell=True, stdout=subprocess.PIPE).stdout.read()
 	
 	if out.find("/main") != -1:
 		packages[pack] = True
@@ -41,12 +41,12 @@ def find_main(pack):
 			packages[pack] = False
 		
 		# Retrive package dependencies
-		deps = subprocess.Popen("apt-cache show " + pack + " | grep -m 1 ^Depends", shell=True, stdout=subprocess.PIPE).stdout.read().split('\n')[0].replace('Depends: ', '').split(', ')
+		deps = subprocess.Popen('apt-cache show ' + pack + ' | grep -m 1 ^Depends', shell=True, stdout=subprocess.PIPE).stdout.read().split('\n')[0].replace('Depends: ', '').split(', ')
 		
 		process_deps(deps)
 		
 		# Retrieve package build dependencies
-		deps1 = subprocess.Popen("apt-cache showsrc " + pack + " | grep -m 1 ^Build-Depends", shell=True, stdout=subprocess.PIPE).stdout.readlines()
+		deps1 = subprocess.Popen('apt-cache showsrc ' + pack + ' | grep -m 1 ^Build-Depends', shell=True, stdout=subprocess.PIPE).stdout.readlines()
 		deps = []
 		
 		for builddep in deps1:
@@ -56,25 +56,31 @@ def find_main(pack):
 		process_deps(deps)
 
 
-if __name__ == '__main__':
+def main():
+	
+	global packages, distro
 	
 	# Check if the amount of arguments is correct
-	if len(sys.argv) != 2 or sys.argv[1] in ('help', '-h', '--help'):
+	if len(sys.argv) < 2 or len(sys.argv) > 3 or sys.argv[1] in ('help', '-h', '--help'):
-		print "Usage: %s <package name>" % sys.argv[0]
+		print 'Usage: %s <package name> [<distribution>]' % sys.argv[0]
 		sys.exit(1)
 	
-	# Global variable to hold the status of all packages
+	if len(sys.argv) == 3 and sys.argv[2]:
-	packages = {}
+		distro = sys.argv[2]
+		if not subprocess.Popen('apt-cache madison bash | grep ' + distro, shell=True, stdout=subprocess.PIPE).stdout.read():
+			print '«%s» is not a valid distribution.' % distro
+			print 'Remember that for 404main to work with a certain distribution it must be in your /etc/apt/sources.list file.'
+			sys.exit(1)
+	else:
+		distro = subprocess.Popen('lsb_release -cs', shell=True, stdout=subprocess.PIPE).stdout.read().strip('\n')
 	
-	if subprocess.Popen("apt-cache show " + sys.argv[1] + " 2>/dev/null", shell=True, stdout=subprocess.PIPE).stdout.read() == '':
+	if not subprocess.Popen('apt-cache madison ' + sys.argv[1] + ' | grep ' + distro, shell=True, stdout=subprocess.PIPE).stdout.read():
-		print "Package «%s» doesn't exist." % sys.argv[1]
+		print 'Can\'t find package «%s» in distribution «%s».' % (sys.argv[1], distro)
 		sys.exit(1)
 	
-	try:
+	print 'Checking package «%s» in distribution «%s»...' % (sys.argv[1], distro)
+	
 	find_main(sys.argv[1])
-	except KeyboardInterrupt:
-		print 'Aborted.'
-		sys.exit(1)
 	
 	# True if everything checked until the point is in main
 	all_in_main = True
@@ -82,9 +88,23 @@ if __name__ == '__main__':
 	for package in packages:
 		if not packages[package]:
 			if all_in_main:
-				print "Following packages aren't in main:"
+				print 'The following packages aren\'t in main:'
 				all_in_main = False
 			print '  ', package
 	
 	if all_in_main:
-		print package, "and all its dependencies are in main."
+		print 'Package «%s» and all its dependencies and build dependencies are in main.' % sys.argv[1]
+
+if __name__ == '__main__':
+	
+	# Global variable to hold the status of all packages
+	packages = {}
+	
+	# Global variable to hold the target distribution
+	distro = ''
+	
+	try:
+		main()
+	except KeyboardInterrupt:
+		print 'Aborted.'
+		sys.exit(1)

TODO

@@ -1,3 +1,4 @@
 - Create missing manpages (for all commands).
 - Document ubuntutools Python modules.
 - Add the process-interdiff script to ubuntu-dev-tools.
+- Modify 404main to use the more robust python-apt module.

debian/changelog

@@ -29,8 +29,12 @@ ubuntu-dev-tools (0.27) UNRELEASED; urgency=low
      - Escape many variables to avoid possible problems there.
      - Reorganize the code a bit and comment it.
      - Accept "upgrade" as an alias for "update".
+     - Hide lsb_release's traceback if pbuilder-dist is manually aborted
+       while the distribution was being detected.
   * 404main:
      - Filter out entries from Debian, thanks to Adrien Cunin! (LP: #194704)
+     - Add limited support for multiple distributions (and update it's manpage).
+     - TODO: Use python-apt instead of lots of pipes.
   * debian/copyright.
      - Add ppaput (the executable has been removed for now -see below-,
        but there is still the module in the source package).

doc/404main.1

@@ -4,12 +4,20 @@
 404main \- check if all build dependencies of a package are in main
 
 .SH SYNOPSIS
-\fB404main\fP <\fIpackage name\fP>
+\fB404main\fP <\fIpackage name\fP> [<\fIdistribution\fP>]
 
 .SH DESCRIPTION
 \fB404main\fP is a script that can be used to check if a package and
 all its build dependencies are in Ubuntu's main component or not.
 
+.SH CAVEATS
+\fB404main\fP will take the dependencies and build dependencies of the
+packages from the distribution you have first in your
+/etc/apt/sources.list file.
+.PP
+Also, because of this the <\fIdistribution\fP> option is NOT trustful, if
+the dependencies changed YOU WILL GET INCORRECT RESULTS.
+
 .SH SEE ALSO
 .BR apt-cache (8)