[PATCH 2/3] pwclient: accept more than one project in ~/.pwclientrc

[Yann E. MORIN]

Currently, given the format of ~/.pwclientrc, pwclient can only
really act on a single project, as ~/pwclientrc can only contain
the configuration for a single project.

Although the -p options comes in handy to specify a project
different from the one configured in ~/.pwclientrc, this only works
if it is hosted on the same server. As soon as one needs to switch
server, it is necessary to edit ~/pwclientrc.

This can be quite inefficient when dealing with many projects, hosted
on different servers.

Change the format of ~/.pwclientrc so it is possible to define more
than one project, and for each project, specify an URL and credentials.

The new format is like:

    [options]
    default = project-A

    [project-A]
    url = http://my.patchwork.server/path/to/xmlrpc
    username = that-is-me
    password = secret

    [other-project]
    url = http://you.get/the/idea
    username = someone
    password = 1234

This has the advantage of not changing the options to pwclient, so
the user experience is unmodified.

If a ~/.pwclentrc exists in the old format, it is automatically
converted over to the new format, and the previous one is saved as
~/.pwclientrc.orig. Upon conversion, no action is made, pwclient just
exits (with return-code 1) to inform the user to review the conversion.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
---
 apps/patchwork/bin/pwclient    | 69 +++++++++++++++++++++++++++++++++---------
 templates/patchwork/pwclientrc | 16 +++++-----
 2 files changed, 63 insertions(+), 22 deletions(-)

diff --git a/apps/patchwork/bin/pwclient b/apps/patchwork/bin/pwclient
index 2104f59..dfbea30 100755
--- a/apps/patchwork/bin/pwclient
+++ b/apps/patchwork/bin/pwclient
@@ -28,6 +28,7 @@ import tempfile
 import subprocess
 import base64
 import ConfigParser
+import shutil
 
 # Default Patchwork remote XML-RPC server URL
 # This script will check the PW_XMLRPC_URL environment variable
@@ -350,16 +351,6 @@ def main():
     msgid_str = ""
     url = DEFAULT_URL
 
-    config = ConfigParser.ConfigParser()
-    config.read([CONFIG_FILE])
-
-    # grab settings from config files
-    if config.has_option('base', 'url'):
-        url = config.get('base', 'url')
-
-    if config.has_option('base', 'project'):
-        project_str = config.get('base', 'project')
-
     for name, value in opts:
         if name == '-s':
             state_str = value
@@ -389,17 +380,67 @@ def main():
         sys.stderr.write("Too many arguments specified\n")
         usage()
 
+    # grab settings from config files
+    config = ConfigParser.ConfigParser()
+    config.read([CONFIG_FILE])
+
+    if not config.has_section('options'):
+        sys.stderr.write('~/.pwclientrc is in the old format. Migrating it...')
+
+        old_project = config.get('base','project')
+
+        new_config = ConfigParser.ConfigParser()
+        new_config.add_section('options')
+
+        new_config.set('options','default',old_project)
+        new_config.add_section(old_project)
+
+        new_config.set(old_project,'url',config.get('base','url'))
+        if config.has_option('auth', 'username'):
+            new_config.set(old_project,'username',config.get('auth','username'))
+        if config.has_option('auth', 'password'):
+            new_config.set(old_project,'password',config.get('auth','password'))
+
+        old_config_file = CONFIG_FILE + '.orig'
+        shutil.copy2(CONFIG_FILE,old_config_file)
+
+        with open(CONFIG_FILE, 'wb') as fd:
+            new_config.write(fd)
+
+        sys.stderr.write(' Done.\n')
+        sys.stderr.write('Your old ~/.pwclientrc was saved to %s\n' % old_config_file)
+        sys.stderr.write('and was converted to the new format. You may want to\n')
+        sys.stderr.write('inspect it before continuing.\n')
+        sys.exit(1)
+
+    if not project_str:
+        try:
+            project_str = config.get('options', 'default')
+        except:
+            sys.stderr.write("No default project configured in ~/.pwclientrc\n")
+            usage()
+
+    if not config.has_section(project_str):
+        sys.stderr.write("No section for project %s\n" % project_str)
+        sys.exit(1)
+
+    if not config.has_option(project_str, 'url'):
+        sys.stderr.write("No URL for project %s\n" % project_str)
+        sys.exit(1)
+
+    url = config.get(project_str, 'url')
+
     (username, password) = (None, None)
     transport = None
     if action in auth_actions:
-        if config.has_option('auth', 'username') and \
-                config.has_option('auth', 'password'):
+        if config.has_option(project_str, 'username') and \
+                config.has_option(project_str, 'password'):
 
             use_https = url.startswith('https')
 
             transport = BasicHTTPAuthTransport( \
-                    config.get('auth', 'username'),
-                    config.get('auth', 'password'),
+                    config.get(project_str, 'username'),
+                    config.get(project_str, 'password'),
                     use_https)
 
         else:
diff --git a/templates/patchwork/pwclientrc b/templates/patchwork/pwclientrc
index 436a28b..d331003 100644
--- a/templates/patchwork/pwclientrc
+++ b/templates/patchwork/pwclientrc
@@ -1,15 +1,15 @@
 # Sample .pwclientrc file for the {{ project.linkname }} project,
 # running on {{ site.domain }}.
 #
-# Save this file to ~/.pwclientrc
-#
-[base]
-url: {{scheme}}://{{site.domain}}{% url 'patchwork.views.xmlrpc.xmlrpc' %}
-project: {{ project.linkname }}
+# Just append this file to your existing ~/.pwclientrc
+# If you do not already have a ~/.pwclientrc, then copy this file to
+# ~/.pwclientrc, and uncomment the following two lines:
+# [options]
+# default={{ project.linkname }}
+
+[{{ project.linkname }}]
+url= {{scheme}}://{{site.domain}}{% url 'patchwork.views.xmlrpc.xmlrpc' %}
 {% if user.is_authenticated %}
-# Adding authentication parameters will allow you to use the 'update'
-# command on patches that you are allowed to edit.
-[auth]
 username: {{ user.username }}
 password: <add your patchwork password here>
 {% endif %}
-- 
1.9.1