1 files changed, 83 insertions, 0 deletions
diff --git a/Lib/repr.py b/Lib/repr.py
new file mode 100644
index 0000000..68f374c
--- /dev/null
+++ b/Lib/repr.py
@@ -0,0 +1,83 @@
+# Redo the `...` (representation) but with limits on most sizes.
+
+import string
+
+class Repr:
+	def init(self):
+		self.maxlevel = 6
+		self.maxtuple = 6
+		self.maxlist = 6
+		self.maxdict = 4
+		self.maxstring = 30
+		self.maxlong = 40
+		self.maxother = 20
+		return self
+	def repr(self, x):
+		return self.repr1(x, self.maxlevel)
+	def repr1(self, x, level):
+		typename = `type(x)`[7:-2] # "<type '......'>"
+		if ' ' in typename:
+			parts = string.split(typename)
+			typename = string.joinfields(parts, '_')
+		try:
+			f = eval('self.repr_' + typename)
+		except AttributeError:
+			s = `x`
+			if len(s) > self.maxother:
+				i = max(0, (self.maxother-3)/2)
+				j = max(0, self.maxother-3-i)
+				s = s[:i] + '...' + s[len(s)-j:]
+			return s
+		return f(x, level)
+	def repr_tuple(self, x, level):
+		n = len(x)
+		if n == 0: return '()'
+		if level <= 0: return '(...)'
+		s = ''
+		for i in range(min(n, self.maxtuple)):
+			if s: s = s + ', '
+			s = s + self.repr1(x[i], level-1)
+		if n > self.maxtuple: s = s + ', ...'
+		elif n == 1: s = s + ','
+		return '(' + s + ')'
+	def repr_list(self, x, level):
+		n = len(x)
+		if n == 0: return '[]'
+		if level <= 0: return '[...]'
+		s = ''
+		for i in range(min(n, self.maxlist)):
+			if s: s = s + ', '
+			s = s + self.repr1(x[i], level-1)
+		if n > self.maxlist: s = s + ', ...'
+		return '[' + s + ']'
+	def repr_dictionary(self, x, level):
+		n = len(x)
+		if n == 0: return '{}'
+		if level <= 0: return '{...}'
+		s = ''
+		keys = x.keys()
+		keys.sort()
+		for i in range(min(n, self.maxdict)):
+			if s: s = s + ', '
+			key = keys[i]
+			s = s + self.repr1(key, level-1)
+			s = s + ': ' + self.repr1(x[key], level-1)
+		if n > self.maxlist: s = s + ', ...'
+		return '{' + s + '}'
+	def repr_string(self, x, level):
+		s = `x[:self.maxstring]`
+		if len(s) > self.maxstring:
+			i = max(0, (self.maxstring-3)/2)
+			j = max(0, self.maxstring-3-i)
+			s = s[:i] + '...' + s[len(s)-j:]
+		return s
+	def repr_long_int(self, x, level):
+		s = `x` # XXX Hope this isn't too slow...
+		if len(s) > self.maxlong:
+			i = max(0, (self.maxlong-3)/2)
+			j = max(0, self.maxlong-3-i)
+			s = s[:i] + '...' + s[len(s)-j:]
+		return s
+
+aRepr = Repr().init()
+repr = aRepr.repr