[chirp_devel] [PATCH 1 of 2] Add bool cast and improve charset options in settings. For #2095

[Tom Hayward]

# HG changeset patch
# User Tom Hayward <tom at tomh.us>
# Date 1417908731 28800
#      Sat Dec 06 15:32:11 2014 -0800
# Node ID 9d504f2619b345da0735dbbb34cf9f8d02c3c17b
# Parent  d10199843d9fcd169738dffbe028cc56feef40e7
Add bool cast and improve charset options in settings. For #2095

Previously, tests could not be done on RadioSettingValueBoolean values.
This patch adds bool casting / test support so that checked boxes test True
and unchecked boxes test False.

RadioSettingValueString supported setting the charset, but only after
initializing the value. This fails if the value contains characters not in
the default charset. With this patch, the charset can be set during
initialization, so when the value is set, it is tested against the appropriate
charset.

diff -r d10199843d9f -r 9d504f2619b3 chirp/settings.py
--- a/chirp/settings.py	Sat Dec 06 15:31:47 2014 -0800
+++ b/chirp/settings.py	Sat Dec 06 15:32:11 2014 -0800
@@ -143,6 +143,10 @@
     def set_value(self, value):
         RadioSettingValue.set_value(self, bool(value))
 
+    def __bool__(self):
+        return bool(self.get_value())
+    __nonzero__ = __bool__
+
     def __str__(self):
         return str(bool(self.get_value()))
 
@@ -168,11 +172,11 @@
 class RadioSettingValueString(RadioSettingValue):
     """A string setting"""
     def __init__(self, minlength, maxlength, current,
-                 autopad=True):
+                 autopad=True, charset=chirp_common.CHARSET_ASCII):
         RadioSettingValue.__init__(self)
         self._minlength = minlength
         self._maxlength = maxlength
-        self._charset = chirp_common.CHARSET_ASCII
+        self._charset = charset
         self._autopad = autopad
         self.set_value(current)