Moved pygtktalog to pycatalog.

Also, clean up setup things and imports.

pycatalog/misc.py

@@ -0,0 +1,77 @@
+"""
+    Project: pyGTKtalog
+    Description: Misc functions used more than once in src
+    Type: lib
+    Author: Roman 'gryf' Dobosz, gryf73@gmail.com
+    Created: 2009-04-05
+"""
+import os
+import errno
+from zlib import crc32
+
+import pycatalog.dbcommon
+from pycatalog.logger import get_logger
+
+LOG = get_logger(__name__)
+
+
+def float_to_string(float_length):
+    """
+    Parse float digit into time string
+    Arguments:
+        @number - digit to be converted into time.
+    Returns HH:MM:SS formatted string
+    """
+    hour = int(float_length / 3600)
+    float_length -= hour*3600
+    minutes = int(float_length / 60)
+    float_length -= minutes * 60
+    sec = int(float_length)
+    return "%02d:%02d:%02d" % (hour, minutes, sec)
+
+
+def calculate_image_path(dbpath=None, create=False):
+    """Calculate image path out of provided path or using current connection"""
+    if not dbpath:
+        dbpath = pycatalog.dbcommon.DbFilename
+        if dbpath == ":memory:":
+            raise OSError("Cannot create image path out of in-memory db!")
+
+        dir_, file_ = (os.path.dirname(dbpath), os.path.basename(dbpath))
+        file_base, dummy = os.path.splitext(file_)
+        images_dir = os.path.join(dir_, file_base + "_images")
+    else:
+        if dbpath and "~" in dbpath:
+            dbpath = os.path.expanduser(dbpath)
+        if dbpath and "$" in dbpath:
+            dbpath = os.path.expandvars(dbpath)
+        images_dir = dbpath
+
+    if create:
+        if not os.path.exists(images_dir):
+            try:
+                os.mkdir(images_dir)
+            except OSError as err:
+                if err.errno != errno.EEXIST:
+                    raise
+    elif not os.path.exists(images_dir):
+        raise OSError("%s: No such directory" % images_dir)
+
+    return os.path.abspath(images_dir)
+
+
+def mk_paths(fname, img_path):
+    """Make path for provided pathname by calculating crc32 out of file"""
+    with open(fname, 'r+b') as fobj:
+        new_path = "%x" % (crc32(fobj.read(10*1024*1024)) & 0xffffffff)
+
+    new_path = [new_path[i:i + 2] for i in range(0, len(new_path), 2)]
+    full_path = os.path.join(img_path, *new_path[:-1])
+
+    try:
+        os.makedirs(full_path)
+    except OSError as exc:
+        if exc.errno != errno.EEXIST:
+            LOG.debug("Directory %s already exists." % full_path)
+
+    return new_path