adding makeThumbs script

src/makeThumbs.py

@@ -0,0 +1,42 @@
+import os
+import os.path
+import re
+import subprocess
+
+def injectShaderBlocks( _folder, _text ):
+    rta = ""
+    lines = _text.split('\n');
+    for line in lines:
+        if line.find('<div class=\"codeAndCanvas\"') >= 0:
+            shaderTextureResults = re.findall(r'<div class=\"codeAndCanvas\" data=\".*\" data-imgs=\"(.*)\"></div>', line.rstrip())
+            shaderFile = re.sub(r'<div class=\"codeAndCanvas\" data=\"(.*?)\"(>| .+>)</div>', r'\1', line.rstrip())
+
+            shaderName,shaderExt = os.path.splitext(shaderFile)
+
+            shaderPath = folder+"/"+shaderFile;
+            if shaderTextureResults:
+                shaderTexturePaths = map (lambda f: folder+"/"+f, shaderTextureResults[0].split(","))
+            else:
+                shaderTexturePaths = []
+
+            shaderString = open(shaderPath, 'r').read()
+            shaderImage = folder+"/"+shaderName+".png"
+            shaderCommand = "glslViewer " + shaderPath + " " + \
+                            " ".join(shaderTexturePaths) + \
+                            " -s 0.5 -o " + shaderImage
+            print shaderCommand
+            returnCode = subprocess.call(shaderCommand, shell=True)
+
+d='.'
+folders = [os.path.join(d,o) for o in os.listdir(d) if os.path.isdir(os.path.join(d,o))];
+folders.sort()
+for folder in folders:
+    if os.path.isfile(folder+'/README.md'):
+        with open(folder+'/README.md', "r") as originalChapter:
+            fileString = originalChapter.read()
+
+            # Correct path for images
+            imgPattern = r'(\!\[.*?\]\()(.*)'
+            subPattern = r'\1' + folder + r'/\2'
+            modifiedChapterString = re.sub(imgPattern, subPattern, fileString)
+            modifiedChapterString = injectShaderBlocks(folder, modifiedChapterString)