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Remove silly EMPTYSTRING global. Saves a global lookup.

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This commit is contained in:
Marc-André Lemburg 2001-02-09 13:37:37 +00:00
parent b3acd3e4d3
commit 85d6edfc83
1 changed files with 6 additions and 8 deletions
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14
Lib/StringIO.py
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@ -36,8 +36,6 @@
__all__ = ["StringIO"] __all__ = ["StringIO"]
EMPTYSTRING = ''
class StringIO: class StringIO:
def __init__(self, buf = ''): def __init__(self, buf = ''):
self.buf = buf self.buf = buf
@ -61,7 +59,7 @@ def seek(self, pos, mode = 0):
if self.closed: if self.closed:
raise ValueError, "I/O operation on closed file" raise ValueError, "I/O operation on closed file"
if self.buflist: if self.buflist:
self.buf += EMPTYSTRING.join(self.buflist) self.buf += ''.join(self.buflist)
self.buflist = [] self.buflist = []
if mode == 1: if mode == 1:
pos += self.pos pos += self.pos
@ -78,7 +76,7 @@ def read(self, n = -1):
if self.closed: if self.closed:
raise ValueError, "I/O operation on closed file" raise ValueError, "I/O operation on closed file"
if self.buflist: if self.buflist:
self.buf += EMPTYSTRING.join(self.buflist) self.buf += ''.join(self.buflist)
self.buflist = [] self.buflist = []
if n < 0: if n < 0:
newpos = self.len newpos = self.len
@ -92,7 +90,7 @@ def readline(self, length=None):
if self.closed: if self.closed:
raise ValueError, "I/O operation on closed file" raise ValueError, "I/O operation on closed file"
if self.buflist: if self.buflist:
self.buf += EMPTYSTRING.join(self.buflist) self.buf += ''.join(self.buflist)
self.buflist = [] self.buflist = []
i = self.buf.find('\n', self.pos) i = self.buf.find('\n', self.pos)
if i < 0: if i < 0:
@ -139,7 +137,7 @@ def write(self, s):
newpos = self.pos + len(s) newpos = self.pos + len(s)
if self.pos < self.len: if self.pos < self.len:
if self.buflist: if self.buflist:
self.buf += EMPTYSTRING.join(self.buflist) self.buf += ''.join(self.buflist)
self.buflist = [] self.buflist = []
self.buflist = [self.buf[:self.pos], s, self.buf[newpos:]] self.buflist = [self.buf[:self.pos], s, self.buf[newpos:]]
self.buf = '' self.buf = ''
@ -151,7 +149,7 @@ def write(self, s):
self.pos = newpos self.pos = newpos
def writelines(self, list): def writelines(self, list):
self.write(EMPTYSTRING.join(list)) self.write(''.join(list))
def flush(self): def flush(self):
if self.closed: if self.closed:
@ -159,7 +157,7 @@ def flush(self):
def getvalue(self): def getvalue(self):
if self.buflist: if self.buflist:
self.buf += EMPTYSTRING.join(self.buflist) self.buf += ''.join(self.buflist)
self.buflist = [] self.buflist = []
return self.buf return self.buf