added 2015/day08

Author: anight

2015/day08/answers.txt

@@ -0,0 +1,2 @@
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2015/day08/input.txt

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2015/day08/run.py

@@ -0,0 +1,49 @@
+#! /usr/bin/env python3
+
+def load_data(filename):
+	with open(filename, 'r') as f:
+		for line in f:
+			line = line.rstrip('\n')
+			yield line
+
+# Part One
+
+def dequoted_unescaped(string):
+	ret = ''
+	string = string[1:-1]
+	escaped = None
+	for i, ch in enumerate(string):
+		if escaped is not None:
+			if string[escaped+1] == 'x':
+				if i == escaped + 3:
+					ret += chr(int(string[escaped+2:escaped+4], 16))
+					escaped = None
+			else:
+				ret += ch
+				escaped = None
+		elif ch == '\\':
+			escaped = i
+		else:
+			ret += ch
+	return ret
+
+result = sum(len(line) - len(dequoted_unescaped(line)) for line in load_data('input.txt'))
+
+print(result)
+
+# Part Two
+
+def quoted_escaped(string):
+	ret = ''
+	for ch in string:
+		if ch in ('"', '\\'):
+			ret += '\\' + ch
+		elif ord(ch) >= 128:
+			ret += f'\\x{ord(ch):02x}'
+		else:
+			ret += ch
+	return '"' + ret + '"'
+
+result = sum(len(quoted_escaped(line)) - len(line) for line in load_data('input.txt'))
+
+print(result)

README.md

@@ -1,6 +1,6 @@
 ```
       1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
-2015 ++ ++ ++ ++ ++ ++ ++ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +
+2015 ++ ++ ++ ++ ++ ++ ++ ++ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +
 2016 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
 2017 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
 2018 ++ ++ ++ ++ ++ ++ ++ ++ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- +