add hg and python

sys/lib/python/plat-os2emx/grp.py

@@ -0,0 +1,182 @@
+# this module is an OS/2 oriented replacement for the grp standard
+# extension module.
+
+# written by Andrew MacIntyre, April 2001.
+# updated July 2003, adding field accessor support
+
+# note that this implementation checks whether ":" or ";" as used as
+# the field separator character.
+
+"""Replacement for grp standard extension module, intended for use on
+OS/2 and similar systems which don't normally have an /etc/group file.
+
+The standard Unix group database is an ASCII text file with 4 fields per
+record (line), separated by a colon:
+  - group name (string)
+  - group password (optional encrypted string)
+  - group id (integer)
+  - group members (comma delimited list of userids, with no spaces)
+
+Note that members are only included in the group file for groups that
+aren't their primary groups.
+(see the section 8.2 of the Python Library Reference)
+
+This implementation differs from the standard Unix implementation by
+allowing use of the platform's native path separator character - ';' on OS/2,
+DOS and MS-Windows - as the field separator in addition to the Unix
+standard ":".
+
+The module looks for the group database at the following locations
+(in order first to last):
+  - ${ETC_GROUP}              (or %ETC_GROUP%)
+  - ${ETC}/group              (or %ETC%/group)
+  - ${PYTHONHOME}/Etc/group   (or %PYTHONHOME%/Etc/group)
+
+Classes
+-------
+
+None
+
+Functions
+---------
+
+getgrgid(gid) -  return the record for group-id gid as a 4-tuple
+
+getgrnam(name) - return the record for group 'name' as a 4-tuple
+
+getgrall() -     return a list of 4-tuples, each tuple being one record
+                 (NOTE: the order is arbitrary)
+
+Attributes
+----------
+
+group_file -     the path of the group database file
+
+"""
+
+import os
+
+# try and find the group file
+__group_path = []
+if os.environ.has_key('ETC_GROUP'):
+    __group_path.append(os.environ['ETC_GROUP'])
+if os.environ.has_key('ETC'):
+    __group_path.append('%s/group' % os.environ['ETC'])
+if os.environ.has_key('PYTHONHOME'):
+    __group_path.append('%s/Etc/group' % os.environ['PYTHONHOME'])
+
+group_file = None
+for __i in __group_path:
+    try:
+        __f = open(__i, 'r')
+        __f.close()
+        group_file = __i
+        break
+    except:
+        pass
+
+# decide what field separator we can try to use - Unix standard, with
+# the platform's path separator as an option.  No special field conversion
+# handlers are required for the group file.
+__field_sep = [':']
+if os.pathsep:
+    if os.pathsep != ':':
+        __field_sep.append(os.pathsep)
+
+# helper routine to identify which separator character is in use
+def __get_field_sep(record):
+    fs = None
+    for c in __field_sep:
+        # there should be 3 delimiter characters (for 4 fields)
+        if record.count(c) == 3:
+            fs = c
+            break
+    if fs:
+        return fs
+    else:
+        raise KeyError, '>> group database fields not delimited <<'
+
+# class to match the new record field name accessors.
+# the resulting object is intended to behave like a read-only tuple,
+# with each member also accessible by a field name.
+class Group:
+    def __init__(self, name, passwd, gid, mem):
+        self.__dict__['gr_name'] = name
+        self.__dict__['gr_passwd'] = passwd
+        self.__dict__['gr_gid'] = gid
+        self.__dict__['gr_mem'] = mem
+        self.__dict__['_record'] = (self.gr_name, self.gr_passwd,
+                                    self.gr_gid, self.gr_mem)
+
+    def __len__(self):
+        return 4
+
+    def __getitem__(self, key):
+        return self._record[key]
+
+    def __setattr__(self, name, value):
+        raise AttributeError('attribute read-only: %s' % name)
+
+    def __repr__(self):
+        return str(self._record)
+
+    def __cmp__(self, other):
+        this = str(self._record)
+        if this == other:
+            return 0
+        elif this < other:
+            return -1
+        else:
+            return 1
+
+
+# read the whole file, parsing each entry into tuple form
+# with dictionaries to speed recall by GID or group name
+def __read_group_file():
+    if group_file:
+        group = open(group_file, 'r')
+    else:
+        raise KeyError, '>> no group database <<'
+    gidx = {}
+    namx = {}
+    sep = None
+    while 1:
+        entry = group.readline().strip()
+        if len(entry) > 3:
+            if sep == None:
+                sep = __get_field_sep(entry)
+            fields = entry.split(sep)
+            fields[2] = int(fields[2])
+            fields[3] = [f.strip() for f in fields[3].split(',')]
+            record = Group(*fields)
+            if not gidx.has_key(fields[2]):
+                gidx[fields[2]] = record
+            if not namx.has_key(fields[0]):
+                namx[fields[0]] = record
+        elif len(entry) > 0:
+            pass                         # skip empty or malformed records
+        else:
+            break
+    group.close()
+    if len(gidx) == 0:
+        raise KeyError
+    return (gidx, namx)
+
+# return the group database entry by GID
+def getgrgid(gid):
+    g, n = __read_group_file()
+    return g[gid]
+
+# return the group database entry by group name
+def getgrnam(name):
+    g, n = __read_group_file()
+    return n[name]
+
+# return all the group database entries
+def getgrall():
+    g, n = __read_group_file()
+    return g.values()
+
+# test harness
+if __name__ == '__main__':
+    getgrall()