[Opensync-devel] [trunk] ExternalCommand in the plugin configuration file

[Henrik /K. <he...@ka...>]

Plugins of type OSYNC_START_TYPE_EXTERNAL needs to be able to spawn an 
external command to run the actual plugin code.

SVN -r 5896 allows a member to set an ExternalCommand in the plugin 
configuration file.
This command will be executed by the proxy to start up the external process.

The external_command should be a string in printf format, with one %s.
Before the command is executed, a variant of printf will be called
to replace the %s with the path to the plugin pipe.

Example:
<ExternalPlugin>
  <ExternalCommand>thunderbird -mozilla-sync %s</ExternalCommand>
</ExternalPlugin>

Added to public API:
osync_plugin_config_get_externalplugin
osync_plugin_config_set_externalplugin
osync_plugin_externalplugin_new
osync_plugin_externalplugin_unref
osync_plugin_externalplugin_ref
osync_plugin_externalplugin_get_external_command
osync_plugin_externalplugin_set_external_command
(as well as the changed format for the plugin configuration file)

Changed internal interface:
From
  osync_bool osync_client_proxy_spawn(OSyncClientProxy *proxy, 
OSyncStartType type, const char *path, OSyncError **error)
To
  osync_bool osync_client_proxy_spawn(OSyncClientProxy *proxy, 
OSyncStartType type, const char *path, const char* external_command, 
OSyncError **error)


/Henrik