1 files changed, 107 insertions, 0 deletions
diff --git a/Imaging/Scripts/explode.py b/Imaging/Scripts/explode.py
new file mode 100644
index 0000000..0445402
--- /dev/null
+++ b/Imaging/Scripts/explode.py
@@ -0,0 +1,107 @@
+#
+# The Python Imaging Library
+# $Id: explode.py 2134 2004-10-06 08:55:20Z fredrik $
+#
+# split an animation into a number of frame files
+#
+
+import Image
+import os, string, sys
+
+class Interval:
+
+    def __init__(self, interval = "0"):
+
+        self.setinterval(interval)
+
+    def setinterval(self, interval):
+
+        self.hilo = []
+
+        for s in string.split(interval, ","):
+            if not string.strip(s):
+                continue
+            try:
+                v = string.atoi(s)
+                if v < 0:
+                    lo, hi = 0, -v
+                else:
+                    lo = hi = v
+            except ValueError:
+                i = string.find(s, "-")
+                lo, hi = string.atoi(s[:i]), string.atoi(s[i+1:])
+
+            self.hilo.append((hi, lo))
+
+        if not self.hilo:
+            self.hilo = [(sys.maxint, 0)]
+
+    def __getitem__(self, index):
+
+        for hi, lo in self.hilo:
+            if hi >= index >= lo:
+                return 1
+        return 0
+
+# --------------------------------------------------------------------
+# main program
+
+html = 0
+
+if sys.argv[1:2] == ["-h"]:
+    html = 1
+    del sys.argv[1]
+
+if not sys.argv[2:]:
+    print
+    print "Syntax: python explode.py infile template [range]"
+    print
+    print "The template argument is used to construct the names of the"
+    print "individual frame files.  The frames are numbered file001.ext,"
+    print "file002.ext, etc.  You can insert %d to control the placement"
+    print "and syntax of the frame number."
+    print
+    print "The optional range argument specifies which frames to extract."
+    print "You can give one or more ranges like 1-10, 5, -15 etc.  If"
+    print "omitted, all frames are extracted."
+    sys.exit(1)
+
+infile = sys.argv[1]
+outfile = sys.argv[2]
+
+frames = Interval(string.join(sys.argv[3:], ","))
+
+try:
+    # check if outfile contains a placeholder
+    outfile % 1
+except TypeError:
+    file, ext = os.path.splitext(outfile)
+    outfile = file + "%03d" + ext
+
+ix = 1
+
+im = Image.open(infile)
+
+if html:
+    file, ext = os.path.splitext(outfile)
+    html = open(file+".html", "w")
+    html.write("<html>\n<body>\n")
+
+while 1:
+
+    if frames[ix]:
+        im.save(outfile % ix)
+        print outfile % ix
+
+        if html:
+            html.write("<img src='%s'><br>\n" % outfile % ix)
+
+    try:
+        im.seek(ix)
+    except EOFError:
+        break
+
+    ix = ix + 1
+
+if html:
+    html.write("</body>\n</html>\n")