add jsvn Subversion wrapper and remove svn aliases

jsvn

@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+# Josh's SVN wrapper script
+# Recommend putting in path as 'jsvn' or something other than 'svn' and
+# making an alias svn='jsvn'
+
+import sys
+import os
+import re
+from subprocess import *
+
+PATH = os.environ['PATH'].split(os.pathsep)
+
+def findInPath(cmd):
+    for p in PATH:
+        full_path = os.path.join(p, cmd)
+        if os.path.exists(full_path):
+            return full_path
+    return ''
+
+def getSVNURL(svn):
+    for line in Popen([svn, 'info'], stdout=PIPE).communicate()[0].split('\n'):
+        m = re.match('^URL:\s*(.*?)\s*$', line)
+        if m is not None:
+            return m.group(1)
+    return ''
+
+def getSVNRoot(svn):
+    url = getSVNURL(svn)
+    parts = url.split('/')
+    for i in range(0, len(parts)):
+        if parts[i] in ('trunk', 'tags', 'branches'):
+            return '/'.join(parts[:i-1])
+    return ''
+
+def getSVNTopLevel(svn):
+    url = getSVNURL(svn)
+    parts = url.split('/')
+    for i in range(0, len(parts)):
+        if parts[i] == 'trunk' or i > 0 and parts[i-1] in ('tags', 'branches'):
+            return '/'.join(parts[:i+1])
+    return ''
+
+def main(argv):
+    realsvn = findInPath('svn')
+    colorsvn = findInPath('colorsvn')
+    colordiff = findInPath('colordiff')
+
+    if realsvn == '':
+        sys.stderr.write("Error: 'svn' not found in path\n")
+        return 1
+
+    if len(argv) >= 1 and argv[0] == "branch":
+        if len(argv) < 2:
+            sys.stderr.write("Must supply branch name\n")
+            return 2
+        branch_name = argv[1]
+        origin = getSVNTopLevel(realsvn)
+        root = getSVNRoot(realsvn)
+        if origin == '' or root == '':
+            sys.stderr.write("Could not determine origin/root URL\n")
+            return 1
+        comment = "Created '%s' branch" % branch_name
+        branch_path = root + '/branches/' + branch_name
+        Popen([realsvn, 'copy', origin, branch_path, '-m', comment]).wait()
+        return 0
+
+    if len(argv) >= 1 and argv[0] == "diff" and colordiff != '':
+        diff_out = Popen([realsvn] + argv, stdout=PIPE).stdout
+        Popen([colordiff], stdin=diff_out).wait()
+        return 0
+
+    if colorsvn != '':
+        Popen([colorsvn] + argv).wait()
+        return 0
+
+    Popen([realsvn] + argv).wait()
+    return 0
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))