Adding command line parameter '--quiet' to pp_lib/app.py

diff --git a/pp_lib/app.py b/pp_lib/app.py
index 92bd7063e5dbfef6625759fb6e9945383e22f946..2d756afbcfa988e0cad68a9b58161c1b6679196e 100644 (file)
--- a/pp_lib/app.py
+++ b/pp_lib/app.py
@@ -33,7 +33,7 @@ from .colored import ColoredFormatter, colorstr
 
 from .obj import PpBaseObjectError, PpBaseObject
 
-__version__ = '0.2.2'
+__version__ = '0.3.1'
 LOG = logging.getLogger(__name__)
 
 
@@ -101,6 +101,8 @@ class PpApplication(PpBaseObject):
         @type: bool
         """
 
+        self._quiet = False
+
         self.env = {}
         """
         @ivar: a dictionary with all application specifiv environment variables,
@@ -220,6 +222,17 @@ class PpApplication(PpBaseObject):
         """The length of the localized version of 'usage: '"""
         return len(self.usage_term)
 
+    # -----------------------------------------------------------
+    @property
+    def quiet(self):
+        """Quiet execution of the application,
+            only warnings and errors are emitted."""
+        return self._quiet
+
+    @quiet.setter
+    def quiet(self, value):
+        self._quiet = bool(value)
+
     # -------------------------------------------------------------------------
     def exit(self, retval=-1, msg=None, trace=False):
         """
@@ -283,6 +296,7 @@ class PpApplication(PpBaseObject):
         res = super(PpApplication, self).as_dict(short=short)
         res['exit_value'] = self.exit_value
         res['usage'] = self.usage
+        res['quiet'] = self.quiet
         res['description'] = self.description
         res['argparse_epilog'] = self.argparse_epilog
         res['argparse_prefix_chars'] = self.argparse_prefix_chars
@@ -301,10 +315,14 @@ class PpApplication(PpBaseObject):
         @return: None
         """
 
-        root_logger = logging.getLogger()
-        root_logger.setLevel(logging.INFO)
+        log_level = logging.INFO
         if self.verbose:
-            root_logger.setLevel(logging.DEBUG)
+            log_level = logging.DEBUG
+        elif self.quiet:
+            log_level = logging.WARNING
+
+        root_logger = logging.getLogger()
+        root_logger.setLevel(log_level)
 
         # create formatter
         format_str = ''
@@ -325,10 +343,7 @@ class PpApplication(PpBaseObject):
 
         # create log handler for console output
         lh_console = logging.StreamHandler(sys.stderr)
-        if self.verbose:
-            lh_console.setLevel(logging.DEBUG)
-        else:
-            lh_console.setLevel(logging.INFO)
+        lh_console.setLevel(log_level)
         lh_console.setFormatter(formatter)
 
         root_logger.addHandler(lh_console)
@@ -489,12 +504,23 @@ class PpApplication(PpBaseObject):
             choices=['yes', 'no', 'auto'],
             help="Use colored output for messages.",
         )
-        general_group.add_argument(
+
+        verbose_group = general_group.add_mutually_exclusive_group()
+
+        verbose_group.add_argument(
             "-v", "--verbose",
             action="count",
             dest='verbose',
             help='Increase the verbosity level',
         )
+
+        verbose_group.add_argument(
+            "-q", "--quiet",
+            action="store_true",
+            dest='quiet',
+            help='Silent execution, only warnings and errors are emitted.',
+        )
+
         general_group.add_argument(
             "-h", "--help",
             action='help',
@@ -545,6 +571,9 @@ class PpApplication(PpBaseObject):
         if self.args.verbose is not None and self.args.verbose > self.verbose:
             self.verbose = self.args.verbose
 
+        if self.args.quiet:
+            self.quiet = self.args.quiet
+
         if self.args.color == 'yes':
             self._terminal_has_colors = True
         elif self.args.color == 'no':