From 2b1b45601eac1d0998a5f653b077641fe0297ac7 Mon Sep 17 00:00:00 2001
From: Ville Rantanen <ville.rantanen@helsinki.fi>
Date: Thu, 22 Dec 2016 09:36:53 +0200
Subject: [PATCH] printing finesse

---
 files/file_list.py | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/files/file_list.py b/files/file_list.py
index 09052a5..502e9ff 100755
--- a/files/file_list.py
+++ b/files/file_list.py
@@ -19,6 +19,7 @@ MIME=magic.open(magic.MAGIC_NONE)
 #MIME=magic.open(magic.MAGIC_MIME)
 MIME.load()
 ANIM=['.','·',"'","'",'·','.','_']
+DEFAULT_CHUNK=1024*1024*50
 
 def setup_options():
     parser=ArgumentParser(description="Maintains the list of images sqlite file")
@@ -70,7 +71,10 @@ def add_recurse(options):
     conn=sqlite3.connect(options.sqlfile)
     conn.text_factory=str
     db=conn.cursor()
+    prev_path_len=0
     for path,dirs,files in os.walk(options.startpath,followlinks=options.symlinks):
+        sys.stdout.write("\r%s%s"%(filename_join(path,".",options),(prev_path_len-len(path))*' '))
+        prev_path_len=len(path)
         dirs=clean_dirs(dirs)
         dirs.sort()
         files.sort()
@@ -94,7 +98,7 @@ def add_recurse(options):
                         #file content changed
                         add_single(conn,filename,change=True,fullfile=options.fullfile)
         conn.commit()
-                    
+    sys.stdout.write("\n")
     return
 
 def add_single(conn,filename,change=False,hash=None,minsize=0,fullfile=False):
@@ -103,7 +107,7 @@ def add_single(conn,filename,change=False,hash=None,minsize=0,fullfile=False):
         hsize=humanize_size(fsize)
     except IOError:
         hsize=""
-    print("%s (%s)"%(filename,hsize))
+    print("\r%s (%s)"%(filename,hsize))
     db=conn.cursor()
     try:
         if hash==None:
@@ -123,6 +127,7 @@ def add_single(conn,filename,change=False,hash=None,minsize=0,fullfile=False):
     else:
         db.execute("INSERT INTO list(file,date,hash,size,mime)\
                VALUES(?,?,?,?,?)",(filename,ftime,hash,fsize,mime))
+    sys.stdout.write('\r')
     return
 
 def checkdb(options):
@@ -140,6 +145,7 @@ def checkdb(options):
     OK_count=0
     for row in db:
         status='OK'
+        sys.stdout.write("\r%s"%(row[0],))
         if os.path.exists(row[0]):
             md5f=get_md5(row[0],options.fullfile)
             if row[1]!=md5f:
@@ -148,7 +154,7 @@ def checkdb(options):
         else:
             status='Not-found'
             missing.append(row)
-        print("%s %s"%(row[0],status))
+        sys.stdout.write("\r%s %s\n"%(row[0],status))
         if status=='OK':
             OK_count+=1
     if len(differing)>0:
@@ -311,22 +317,25 @@ def get_folder_contents(db,path):
             files.append(base)
     return files
 
-
 def get_md5(filename,fullfile=False):
     ''' returns content based hash, only first 50Mb is read, unless user wants the whole file '''
-    if fullfile:
+    fsize=os.path.getsize(filename)
+    if fullfile and fsize>DEFAULT_CHUNK:
         anim_i=0
+        anim_len=len(ANIM)
+        filename_len=len(filename)
         block_size=2**24
+        chars_per_block=filename_len/(float(fsize)/block_size)
         md5 = hashlib.md5()
         with open(filename,'rb') as f: 
             for chunk in iter(lambda: f.read(block_size), b''): 
-                sys.stdout.write('\r'+ANIM[anim_i])
+                sys.stdout.write('\r'+(int(anim_i*chars_per_block)*'_')+ANIM[anim_i%anim_len])
                 sys.stdout.flush()
-                anim_i=(anim_i+1)%len(ANIM)
+                anim_i+=1
                 md5.update(chunk)
-        sys.stdout.write('\r')
+        sys.stdout.write('\r'+filename_len*' ')
         return md5.hexdigest()
-    return hashlib.md5(open(filename,'rb').read(1024*1024*50)).hexdigest()
+    return hashlib.md5(open(filename,'rb').read(DEFAULT_CHUNK)).hexdigest()
 
 
 def has_changes(options):