add hg and python

sys/lib/python/mercurial/config.py

@@ -0,0 +1,137 @@
+# config.py - configuration parsing for Mercurial
+#
+#  Copyright 2009 Matt Mackall <mpm@selenic.com> and others
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+
+from i18n import _
+import error
+import re, os
+
+class sortdict(dict):
+    'a simple sorted dictionary'
+    def __init__(self, data=None):
+        self._list = []
+        if data:
+            self.update(data)
+    def copy(self):
+        return sortdict(self)
+    def __setitem__(self, key, val):
+        if key in self:
+            self._list.remove(key)
+        self._list.append(key)
+        dict.__setitem__(self, key, val)
+    def __iter__(self):
+        return self._list.__iter__()
+    def update(self, src):
+        for k in src:
+            self[k] = src[k]
+    def items(self):
+        return [(k, self[k]) for k in self._list]
+    def __delitem__(self, key):
+        dict.__delitem__(self, key)
+        self._list.remove(key)
+
+class config(object):
+    def __init__(self, data=None):
+        self._data = {}
+        self._source = {}
+        if data:
+            for k in data._data:
+                self._data[k] = data[k].copy()
+            self._source = data._source.copy()
+    def copy(self):
+        return config(self)
+    def __contains__(self, section):
+        return section in self._data
+    def __getitem__(self, section):
+        return self._data.get(section, {})
+    def __iter__(self):
+        for d in self.sections():
+            yield d
+    def update(self, src):
+        for s in src:
+            if s not in self:
+                self._data[s] = sortdict()
+            self._data[s].update(src._data[s])
+        self._source.update(src._source)
+    def get(self, section, item, default=None):
+        return self._data.get(section, {}).get(item, default)
+    def source(self, section, item):
+        return self._source.get((section, item), "")
+    def sections(self):
+        return sorted(self._data.keys())
+    def items(self, section):
+        return self._data.get(section, {}).items()
+    def set(self, section, item, value, source=""):
+        if section not in self:
+            self._data[section] = sortdict()
+        self._data[section][item] = value
+        self._source[(section, item)] = source
+
+    def parse(self, src, data, sections=None, remap=None, include=None):
+        sectionre = re.compile(r'\[([^\[]+)\]')
+        itemre = re.compile(r'([^=\s][^=]*?)\s*=\s*(.*\S|)')
+        contre = re.compile(r'\s+(\S.*\S)')
+        emptyre = re.compile(r'(;|#|\s*$)')
+        unsetre = re.compile(r'%unset\s+(\S+)')
+        includere = re.compile(r'%include\s+(\S.*\S)')
+        section = ""
+        item = None
+        line = 0
+        cont = False
+
+        for l in data.splitlines(True):
+            line += 1
+            if cont:
+                m = contre.match(l)
+                if m:
+                    if sections and section not in sections:
+                        continue
+                    v = self.get(section, item) + "\n" + m.group(1)
+                    self.set(section, item, v, "%s:%d" % (src, line))
+                    continue
+                item = None
+            m = includere.match(l)
+            if m:
+                inc = m.group(1)
+                base = os.path.dirname(src)
+                inc = os.path.normpath(os.path.join(base, inc))
+                if include:
+                    include(inc, remap=remap, sections=sections)
+                continue
+            if emptyre.match(l):
+                continue
+            m = sectionre.match(l)
+            if m:
+                section = m.group(1)
+                if remap:
+                    section = remap.get(section, section)
+                if section not in self:
+                    self._data[section] = sortdict()
+                continue
+            m = itemre.match(l)
+            if m:
+                item = m.group(1)
+                cont = True
+                if sections and section not in sections:
+                    continue
+                self.set(section, item, m.group(2), "%s:%d" % (src, line))
+                continue
+            m = unsetre.match(l)
+            if m:
+                name = m.group(1)
+                if sections and section not in sections:
+                    continue
+                if self.get(section, name) != None:
+                    del self._data[section][name]
+                continue
+
+            raise error.ConfigError(_("config error at %s:%d: '%s'")
+                                    % (src, line, l.rstrip()))
+
+    def read(self, path, fp=None, sections=None, remap=None):
+        if not fp:
+            fp = open(path)
+        self.parse(path, fp.read(), sections, remap, self.read)