[PATCH 6 of 6] scmutil: split platform-specific bits into their own modules

[Kevin Bullock]

# HG changeset patch
# User Kevin Bullock <kbullock at ringworld.org>
# Date 1360690581 21600
# Node ID e0398ae149a834d19b718ec0c9869bbc16ba3086
# Parent  2a7b18b83de419ff4e7a942795ef7a32c8a3e9a7
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.

diff --git a/mercurial/scmposix.py b/mercurial/scmposix.py
new file mode 100644
--- /dev/null
+++ b/mercurial/scmposix.py
@@ -0,0 +1,32 @@
+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')]
diff --git a/mercurial/scmutil.py b/mercurial/scmutil.py
--- a/mercurial/scmutil.py
+++ b/mercurial/scmutil.py
@@ -11,6 +11,14 @@ import util, error, osutil, revset, simi
 import match as matchmod
 import os, errno, re, stat, sys, 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
     nodes excluded from the push/pull.
@@ -535,84 +543,6 @@ 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]
diff --git a/mercurial/scmwindows.py b/mercurial/scmwindows.py
new file mode 100644
--- /dev/null
+++ b/mercurial/scmwindows.py
@@ -0,0 +1,45 @@
+import sys, 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