scmutil: split platform-specific bits into their own modules

This parallels what's done for the util module, which imports either
mercurial.posix or mercurial.windows as 'platform' and then slurps the
appropriate functions into its own namespace.

mercurial/scmposix.py

@@ -0,0 +1,32 b''
+import sys, os
+import osutil
+
+def _rcfiles(path):
+    rcs = [os.path.join(path, 'hgrc')]
+    rcdir = os.path.join(path, 'hgrc.d')
+    try:
+        rcs.extend([os.path.join(rcdir, f)
+                    for f, kind in osutil.listdir(rcdir)
+                    if f.endswith(".rc")])
+    except OSError:
+        pass
+    return rcs
+
+def systemrcpath():
+    path = []
+    if sys.platform == 'plan9':
+        root = 'lib/mercurial'
+    else:
+        root = 'etc/mercurial'
+    # old mod_python does not set sys.argv
+    if len(getattr(sys, 'argv', [])) > 0:
+        p = os.path.dirname(os.path.dirname(sys.argv[0]))
+        path.extend(_rcfiles(os.path.join(p, root)))
+    path.extend(_rcfiles('/' + root))
+    return path
+
+def userrcpath():
+    if sys.platform == 'plan9':
+        return [os.environ['home'] + '/lib/hgrc']
+    else:
+        return [os.path.expanduser('~/.hgrc')]

mercurial/scmwindows.py

@@ -0,0 +1,45 b''
+import os
+import osutil
+import _winreg
+
+def systemrcpath():
+    '''return default os-specific hgrc search path'''
+    rcpath = []
+    filename = util.executablepath()
+    # Use mercurial.ini found in directory with hg.exe
+    progrc = os.path.join(os.path.dirname(filename), 'mercurial.ini')
+    if os.path.isfile(progrc):
+        rcpath.append(progrc)
+        return rcpath
+    # Use hgrc.d found in directory with hg.exe
+    progrcd = os.path.join(os.path.dirname(filename), 'hgrc.d')
+    if os.path.isdir(progrcd):
+        for f, kind in osutil.listdir(progrcd):
+            if f.endswith('.rc'):
+                rcpath.append(os.path.join(progrcd, f))
+        return rcpath
+    # else look for a system rcpath in the registry
+    value = util.lookupreg('SOFTWARE\\Mercurial', None,
+                           _winreg.HKEY_LOCAL_MACHINE)
+    if not isinstance(value, str) or not value:
+        return rcpath
+    value = util.localpath(value)
+    for p in value.split(os.pathsep):
+        if p.lower().endswith('mercurial.ini'):
+            rcpath.append(p)
+        elif os.path.isdir(p):
+            for f, kind in osutil.listdir(p):
+                if f.endswith('.rc'):
+                    rcpath.append(os.path.join(p, f))
+    return rcpath
+
+def userrcpath():
+    '''return os-specific hgrc search path to the user dir'''
+    home = os.path.expanduser('~')
+    path = [os.path.join(home, 'mercurial.ini'),
+            os.path.join(home, '.hgrc')]
+    userprofile = os.environ.get('USERPROFILE')
+    if userprofile:
+        path.append(os.path.join(userprofile, 'mercurial.ini'))
+        path.append(os.path.join(userprofile, '.hgrc'))
+    return path

mercurial/scmutil.py

@@ -9,7 +9,15 b' from i18n import _'
 from mercurial.node import nullrev
 import util, error, osutil, revset, similar, encoding, phases
 import match as matchmod
-import os, errno, re, stat, sys, glob
+import os, errno, re, stat, glob
+
+if os.name == 'nt':
+    import scmwindows as scmplatform
+else:
+    import scmposix as scmplatform
+
+systemrcpath = scmplatform.systemrcpath
+userrcpath = scmplatform.userrcpath
 
 def nochangesfound(ui, repo, excluded=None):
     '''Report no changes for push/pull, excluded is None or a list of
@@ -531,84 +539,6 b' def rcpath():'
             _rcpath = osrcpath()
     return _rcpath
 
-if os.name != 'nt':
-
-    def rcfiles(path):
-        rcs = [os.path.join(path, 'hgrc')]
-        rcdir = os.path.join(path, 'hgrc.d')
-        try:
-            rcs.extend([os.path.join(rcdir, f)
-                        for f, kind in osutil.listdir(rcdir)
-                        if f.endswith(".rc")])
-        except OSError:
-            pass
-        return rcs
-
-    def systemrcpath():
-        path = []
-        if sys.platform == 'plan9':
-            root = 'lib/mercurial'
-        else:
-            root = 'etc/mercurial'
-        # old mod_python does not set sys.argv
-        if len(getattr(sys, 'argv', [])) > 0:
-            p = os.path.dirname(os.path.dirname(sys.argv[0]))
-            path.extend(rcfiles(os.path.join(p, root)))
-        path.extend(rcfiles('/' + root))
-        return path
-
-    def userrcpath():
-        if sys.platform == 'plan9':
-            return [os.environ['home'] + '/lib/hgrc']
-        else:
-            return [os.path.expanduser('~/.hgrc')]
-
-else:
-
-    import _winreg
-
-    def systemrcpath():
-        '''return default os-specific hgrc search path'''
-        rcpath = []
-        filename = util.executablepath()
-        # Use mercurial.ini found in directory with hg.exe
-        progrc = os.path.join(os.path.dirname(filename), 'mercurial.ini')
-        if os.path.isfile(progrc):
-            rcpath.append(progrc)
-            return rcpath
-        # Use hgrc.d found in directory with hg.exe
-        progrcd = os.path.join(os.path.dirname(filename), 'hgrc.d')
-        if os.path.isdir(progrcd):
-            for f, kind in osutil.listdir(progrcd):
-                if f.endswith('.rc'):
-                    rcpath.append(os.path.join(progrcd, f))
-            return rcpath
-        # else look for a system rcpath in the registry
-        value = util.lookupreg('SOFTWARE\\Mercurial', None,
-                               _winreg.HKEY_LOCAL_MACHINE)
-        if not isinstance(value, str) or not value:
-            return rcpath
-        value = util.localpath(value)
-        for p in value.split(os.pathsep):
-            if p.lower().endswith('mercurial.ini'):
-                rcpath.append(p)
-            elif os.path.isdir(p):
-                for f, kind in osutil.listdir(p):
-                    if f.endswith('.rc'):
-                        rcpath.append(os.path.join(p, f))
-        return rcpath
-
-    def userrcpath():
-        '''return os-specific hgrc search path to the user dir'''
-        home = os.path.expanduser('~')
-        path = [os.path.join(home, 'mercurial.ini'),
-                os.path.join(home, '.hgrc')]
-        userprofile = os.environ.get('USERPROFILE')
-        if userprofile:
-            path.append(os.path.join(userprofile, 'mercurial.ini'))
-            path.append(os.path.join(userprofile, '.hgrc'))
-        return path
-
 def revsingle(repo, revspec, default='.'):
     if not revspec:
         return repo[default]