2011-10-20: reupload the file if the file on the server is older than the local

reupload the file if the file on the server is older than the local file.

diff --git a/static.py b/static.py
--- a/static.py
+++ b/static.py
@@ -48,6 +48,7 @@ import re
 import mercurial
 import ftplib
 import socket
+import datetime
 from mercurial import cmdutil
 from mercurial import commands
 
@@ -343,6 +344,9 @@ def upload(ui, repo, target, ftpstring):
 
     #ftp.dir()
     #return
+    ftpfeatures = ftp.sendcmd("FEAT")
+
+    _ftpdircache = set()
 
     for d, dirnames, filenames in os.walk(target):
         for filename in filenames:
@@ -353,9 +357,11 @@ def upload(ui, repo, target, ftpstring):
             #print serverdirparts, serverfile
             with open(localfile, "rb") as f:
                 sd = serverdirparts[0]
-                if sd and not sd in ftp.nlst():
+                if sd and not sd in _ftpdircache and not sd in ftp.nlst():
                     try:
+                        ui.status("creating directory ", sd, "\n")
                         ftp.mkd(sd)
+                        _ftpdircache.add(sd)
                     except ftplib.error_perm, resp:
                         ui.warn("could not create directory ", sd, ": " , resp, "\n")
                 for sdp in serverdirparts[1:]:
@@ -363,15 +369,28 @@ def upload(ui, repo, target, ftpstring):
                     sd = join(sd, sdp)
                     #print sd, sdp
                     #print ftp.nlst(sdold)
-                    if sd and not sd in ftp.nlst(sdold):
+                    if sd and not sd in _ftpdircache and not sd in ftp.nlst(sdold):
                         try:
+                            ui.status("creating directory ", sd, "\n")
                             ftp.mkd(sd)
+                            _ftpdircache.add(sd)
                         except ftplib.error_perm, resp:
                             ui.warn("could not create directory ", sd, ": " , resp, "\n")
 
                 if not serverfile in ftp.nlst(serverdir):
-                    ui.status("uploading ", serverfile, "\n")
+                    ui.status("uploading ", serverfile, " because it is not yet online.\n")
                     ftp.storbinary("STOR "+ serverfile, f)
+                else:
+                    # reupload the file if the file on the server is older than the local file.
+                    if " MDTM" in ftpfeatures.splitlines():
+                        ftpmtime = ftp.sendcmd("MDTM " + serverfile).split()[1]
+                        localmtime = os.stat(localfile).st_mtime
+                        localmtimestr = datetime.datetime.utcfromtimestamp(localmtime).strftime("%Y%m%d%H%M")
+                        print ftpmtime, localmtimestr
+                        newer = int(localmtimestr) > int(ftpmtime)
+                    if newer:
+                        ui.status("uploading ", serverfile, " because it is newer than the file on the FTP server.\n")
+                        ftp.storbinary("STOR "+ serverfile, f)