More work on the kal aka cal.py command. It can now do around 80% of all the stuff calendar-cli can do, plus more.

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/template.py b/lib/template.py
new file mode 100644
index 0000000..47281d9
--- /dev/null
+++ b/lib/template.py
@@ -0,0 +1,49 @@
+"""String formatter that allows default values to be passed in the
+template string.
+
+This does not really belong in the calendar-cli package.  I was
+googling a bit, and didn't find anything like this out there ... but
+I'm sure there must exist something like this?"""
+
+import datetime
+import string
+import re
+
+class NoValue():
+    def __getattr__(self, attr):
+        return self
+    def __getitem__(self, attr):
+        return self
+    def __str__(self):
+        return ""
+    def __format__(self, spec):
+        try:
+            return "".__format__(spec)
+        except:
+            return ""
+
+no_value = NoValue()
+
+class Template(string.Formatter):
+    def __init__(self, template):
+        self.template = template
+
+    def format(self, *pargs, **kwargs):
+        return super().format(self.template, *pargs, **kwargs)
+    
+    def get_value(self, key, args, kwds):
+        try:
+            return string.Formatter.get_value(self, key, args, kwds)
+        except:
+            return no_value
+
+    def format_field(self, value, format_spec):
+        rx = re.match(r'\?([^\?]*)\?(.*)', format_spec)
+        if rx:
+            format_spec = rx.group(2)
+            if value is no_value:
+                value = rx.group(1)
+        try:
+            return string.Formatter.format_field(self, value, format_spec)
+        except:
+            return string.Formatter.format_field(self, value, "")