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Author: zmedico |
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Date: 2008-04-14 16:32:19 +0000 (Mon, 14 Apr 2008) |
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New Revision: 9890 |
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|
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Modified: |
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main/trunk/pym/portage/__init__.py |
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Log: |
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When regenerating USE_EXPAND in config.setcpv(), improve performance by |
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using regular expression instead of str.startswith(). |
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Modified: main/trunk/pym/portage/__init__.py |
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=================================================================== |
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--- main/trunk/pym/portage/__init__.py 2008-04-14 01:35:25 UTC (rev 9889) |
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+++ main/trunk/pym/portage/__init__.py 2008-04-14 16:32:19 UTC (rev 9890) |
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@@ -2035,8 +2035,12 @@ |
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for var in use_expand: |
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prefix = var.lower() + "_" |
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prefix_len = len(prefix) |
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- expand_flags = set([ x[prefix_len:] for x in use \ |
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- if x.startswith(prefix) ]) |
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+ prefix_re = re.compile(r'^(%s)(.*)' % prefix) |
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+ expand_flags = set() |
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+ for x in use: |
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+ m = prefix_re.match(x) |
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+ if m is not None: |
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+ expand_flags.add(m.group(2)) |
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var_split = self.get(var, "").split() |
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# Preserve the order of var_split because it can matter for things |
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# like LINGUAS. |
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@@ -2047,15 +2051,18 @@ |
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var_split = [ x for x in var_split if x != "*" ] |
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has_iuse = set() |
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for x in iuse_implicit: |
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- if x.startswith(prefix): |
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- has_iuse.add(x[prefix_len:]) |
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+ m = prefix_re.match(x) |
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+ if m is not None: |
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+ has_iuse.add(m.group(2)) |
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if has_wildcard: |
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# * means to enable everything in IUSE that's not masked |
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if has_iuse: |
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for x in iuse_implicit: |
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- if x.startswith(prefix) and x not in self.usemask: |
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- suffix = x[prefix_len:] |
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- var_split.append(suffix) |
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+ if x in self.usemask: |
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+ continue |
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+ m = prefix_re.match(x) |
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+ if m is not None: |
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+ var_split.append(m.group(2)) |
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use.add(x) |
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else: |
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# If there is a wildcard and no matching flags in IUSE then |
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|
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-- |
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