Add option in settings to view PMS logs, shows last 1000 lines.

Table styling fix.

plexpy/log_reader.py

@@ -0,0 +1,74 @@
+#  This file is part of PlexPy.
+#
+#  PlexPy is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  PlexPy is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with PlexPy.  If not, see <http://www.gnu.org/licenses/>.
+
+from plexpy import helpers, logger
+import re
+import os
+import plexpy
+
+def get_log_tail(window=20):
+
+    if plexpy.CONFIG.PMS_LOGS_FOLDER:
+        log_file = os.path.join(plexpy.CONFIG.PMS_LOGS_FOLDER, 'Plex Media Server.log')
+    else:
+        return []
+
+    try:
+        logfile = open(log_file, "r")
+    except IOError, e:
+        logger.error('Unable to open Plex Log file. %s' % e)
+        return []
+
+    log_lines = tail(logfile, window)
+    clean_lines = []
+    for i in log_lines:
+        log_time = i.split(' [')[0]
+        log_level = i.split('] ', 1)[1].split(' - ',1)[0]
+        log_msg = i.split('] ', 1)[1].split(' - ',1)[1]
+        full_line = [log_time, log_level, log_msg]
+        clean_lines.append(full_line)
+
+    return clean_lines
+
+# https://stackoverflow.com/questions/136168/get-last-n-lines-of-a-file-with-python-similar-to-tail
+def tail(f, window=20):
+    """
+    Returns the last `window` lines of file `f` as a list.
+    """
+    if window == 0:
+        return []
+    BUFSIZ = 1024
+    f.seek(0, 2)
+    bytes = f.tell()
+    size = window + 1
+    block = -1
+    data = []
+    while size > 0 and bytes > 0:
+        if bytes - BUFSIZ > 0:
+            # Seek back one whole BUFSIZ
+            f.seek(block * BUFSIZ, 2)
+            # read BUFFER
+            data.insert(0, f.read(BUFSIZ))
+        else:
+            # file too small, start from begining
+            f.seek(0,0)
+            # only read what was not read
+            data.insert(0, f.read(bytes))
+        linesFound = data[0].count('\n')
+        size -= linesFound
+        bytes -= BUFSIZ
+        block -= 1
+    return ''.join(data).splitlines()[-window:]
+