storesms: add new functions needed by gsmd2

sms_update adds newly received messages to store if they
are missing.

diff --git a/sms/storesms.py b/sms/storesms.py
index 5b63280ad025621a1dcf9f9d552f03890e3d4342..ea757292ea2208a8435bdf9a7d4cbc8935e472d6 100644 (file)
--- a/sms/storesms.py
+++ b/sms/storesms.py
@@ -482,3 +482,83 @@ class SMSstore:
             self.newmesg.append(tm)
             self.newmesg.sort()
             self.newmesg.reverse()
+
+##
+# load and save lists of known SMS messages from a 'mirror' file.
+def load_mirror(filename):
+    # load an array of index address date
+    # from the file and store in a hash
+    rv = {}
+    try:
+        f = file(filename)
+    except IOError:
+        return rv
+    l = f.readline()
+    while l:
+        fields = l.strip().split(None, 1)
+        rv[fields[0]] = fields[1]
+        l = f.readline()
+    return rv
+
+def save_mirror(filename, hash):
+    n = filename + '.new'
+    f = open(n, 'w')
+    for i in hash:
+        f.write(i + ' ' + hash[i] + '\n')
+    f.close()
+    os.rename(n, filename)
+
+def find_sms():
+    pth = None
+    for p in ['/data','/media/card','/var/tmp']:
+        if os.path.exists(os.path.join(p,'SMS')):
+            pth = p
+            break
+    return pth
+
+def sms_update(messages, sim):
+    '''The given messages were read from the given SIM.
+    We need to compare against the 'mirror' for that SIM
+    and store any new messages in an appropriate store.
+    'messages' is a hash index by message number containing
+    a tuple:  sender, date, txt, ref, part
+    '''
+
+    path = find_sms()
+    if not path:
+        return None, None
+    dir = os.path.join(path, 'SMS')
+    store = SMSstore(dir)
+    mfile = os.path.join(dir, '.sim-mirror-'+sim)
+    mirror = load_mirror(mfile)
+    mirror_seen = {}
+    found_one = False
+    for index in messages:
+        sender, date, txt, ref, part = messages[index]
+        k = date[2:] + ' ' + sender
+        if index not in mirror or mirror[index] != k:
+            sms = SMSmesg(source='GSM', time=date[2:],
+                          sender=sender, text=txt.encode('utf-8'),
+                          state='NEW', ref=ref, part=part)
+            store.store(sms)
+            found_one = True
+            mirror[index] = k
+        mirror_seen[index] = k
+
+    if len(mirror_seen) > 5:
+        save_mirror(mfile, mirror_seen)
+        mirror = mirror_seen
+    else:
+        save_mirror(mfile, mirror)
+    # Now return list that could suitably be deleted
+    rev = {}
+    dlist = []
+    for i in mirror:
+        k = mirror[i]+' '+str(i)
+        rev[k] = i
+        dlist.append(k)
+    dlist.sort()
+    age_order = []
+    for i in dlist:
+        age_order.append(rev[i])
+    return found_one, age_order