fix typo in help
[rainbowstream.git] / rainbowstream / c_image.py
index 154552d..94299ec 100644 (file)
@@ -1,6 +1,7 @@
 from PIL import Image
 from os.path import join, dirname, getmtime, exists, expanduser
 from .config import *
+from .py3patch import *
 
 import ctypes
 import sys
@@ -8,10 +9,13 @@ import os
 
 
 def call_c():
+    """
+    Call the C program for converting RGB to Ansi colors
+    """
     library = expanduser('~/.image.so')
     sauce = join(dirname(__file__), 'image.c')
     if not exists(library) or getmtime(sauce) > getmtime(library):
-        build = "gcc -fPIC -shared -o %s %s" % (library, sauce)
+        build = "cc -fPIC -shared -o %s %s" % (library, sauce)
         assert os.system(build + " >/dev/null 2>&1") == 0
     image_c = ctypes.cdll.LoadLibrary(library)
     image_c.init()
@@ -21,10 +25,16 @@ rgb2short = call_c()
 
 
 def pixel_print(ansicolor):
+    """
+    Print a pixel with given Ansi color
+    """
     sys.stdout.write('\033[48;5;%sm \033[0m' % (ansicolor))
 
 
-def image_to_display(path,start=None,length=None):
+def image_to_display(path, start=None, length=None):
+    """
+    Display an image
+    """
     rows, columns = os.popen('stty size', 'r').read().split()
     if not start:
         start = c['IMAGE_SHIFT']
@@ -40,13 +50,17 @@ def image_to_display(path,start=None,length=None):
     i = i.resize((width, height), Image.ANTIALIAS)
     height = min(height, c['IMAGE_MAX_HEIGHT'])
 
-    for y in range(height):
+    for y in xrange(height):
         sys.stdout.write(' ' * start)
-        for x in range(width):
+        for x in xrange(width):
             p = i.getpixel((x, y))
             r, g, b = p[:3]
             pixel_print(rgb2short(r, g, b))
         sys.stdout.write('\n')
 
+
+"""
+For direct using purpose
+"""
 if __name__ == '__main__':
     image_to_display(sys.argv[1])