add help text

sssg/cli.py

@@ -5,7 +5,10 @@ import sys
 import os
 
 def main(args=sys.argv):
+    try:
         command = args[1]
+    except IndexError:
+        command = "nonexistent"
 
     if command == "rebuild":
         cwd = os.getcwd()
@@ -15,3 +18,16 @@ def main(args=sys.argv):
         os.execv('/bin/sh', ['/bin/sh', '.deploy'])
     elif command == "update":
         sssg.liveupdate.liveupdate()
+    else:
+        help_text = """
+sssg - the stupid static site generator
+
+usage: sssg [verb]
+
+verb: one of
+    rebuild -- rebuilds the static site into output/
+    deploy -- executes the deploy script
+    update -- rebuild the static site upon any change
+"""
+
+        print(help_text)

sssg/converters.py

@@ -42,8 +42,8 @@ BlogConverter = BasicConverter
 
 class BinaryConverter(Converter):
     def realize_to_output(self: Self):
-        with open(self.document.file_path, "r") as origin:
+        with open(self.document.file_path, "rb") as origin:
-            with open(self.document.result_path, "w") as target:
+            with open(self.document.result_path, "wb") as target:
                 target.write(origin.read())
 
 class SensibleConverterConfiguration(ConverterConfiguration):