1 files changed, 93 insertions, 0 deletions
diff --git a/PC/layout/support/logging.py b/PC/layout/support/logging.py
new file mode 100644
index 0000000000..30869b949a
--- /dev/null
+++ b/PC/layout/support/logging.py
@@ -0,0 +1,93 @@
+"""
+Logging support for make_layout.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+import logging
+import sys
+
+__all__ = []
+
+LOG = None
+HAS_ERROR = False
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+@public
+def configure_logger(ns):
+    global LOG
+    if LOG:
+        return
+
+    LOG = logging.getLogger("make_layout")
+    LOG.level = logging.DEBUG
+
+    if ns.v:
+        s_level = max(logging.ERROR - ns.v * 10, logging.DEBUG)
+        f_level = max(logging.WARNING - ns.v * 10, logging.DEBUG)
+    else:
+        s_level = logging.ERROR
+        f_level = logging.INFO
+
+    handler = logging.StreamHandler(sys.stdout)
+    handler.setFormatter(logging.Formatter("{levelname:8s} {message}", style="{"))
+    handler.setLevel(s_level)
+    LOG.addHandler(handler)
+
+    if ns.log:
+        handler = logging.FileHandler(ns.log, encoding="utf-8", delay=True)
+        handler.setFormatter(
+            logging.Formatter("[{asctime}]{levelname:8s}: {message}", style="{")
+        )
+        handler.setLevel(f_level)
+        LOG.addHandler(handler)
+
+
+class BraceMessage:
+    def __init__(self, fmt, *args, **kwargs):
+        self.fmt = fmt
+        self.args = args
+        self.kwargs = kwargs
+
+    def __str__(self):
+        return self.fmt.format(*self.args, **self.kwargs)
+
+
+@public
+def log_debug(msg, *args, **kwargs):
+    return LOG.debug(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_info(msg, *args, **kwargs):
+    return LOG.info(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_warning(msg, *args, **kwargs):
+    return LOG.warning(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_error(msg, *args, **kwargs):
+    global HAS_ERROR
+    HAS_ERROR = True
+    return LOG.error(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_exception(msg, *args, **kwargs):
+    global HAS_ERROR
+    HAS_ERROR = True
+    return LOG.exception(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def error_was_logged():
+    return HAS_ERROR