script: add a usefull script to create code snippets from specification blobs

diff --git a/scripts/specBytesToCode.py b/scripts/specBytesToCode.py
new file mode 100644 (file)
index 0000000..cee7437
--- /dev/null
+++ b/scripts/specBytesToCode.py
@@ -0,0 +1,69 @@
+#!/usr/bin/python
+#
+#  A script to convert blob from the MS spec to array of byte to use in unitary tests
+#
+#       00000000 c7 01 00 01 20 54 e2
+#       00000008 c7 01 00 01 20 54 e2
+#    taken from the spec, will give:
+#       0xc7, 0x01, 0x00, 0x01, 0x20, 0x54, 0xe2,
+#       0xc7, 0x01, 0x00, 0x01, 0x20, 0x54, 0xe2,
+#
+#   Notes:
+#       * the script reads the two first lines to detect the number of items per lines, so you need a blob with at least 2 lines
+#       * the script detects if items are hex values by searching for + or -
+#
+#    sample usage:
+#     $ python scripts/specBytesToCode.py < image.txt > image.c
+#     then go edit image.c and paste that in your code 
+import sys
+
+
+def getOffset(l):
+    token = l.split(' ')[0]
+    return int(token, 16) 
+    
+def isHex(l):
+    return l.find('+') == -1 and l.find('-') == -1
+
+if __name__ == '__main__':
+    
+    lines = []
+    itemPerLine = 16
+    doHex = True
+    
+    # parse the offset to know how many items per line we have
+    l1 = sys.stdin.readline().strip()
+    l2 = sys.stdin.readline().strip()
+    itemsPerLine = getOffset(l2) - getOffset(l1)
+    
+    #
+    doHex = isHex(l1)
+    
+    for l in [l1, l2] + sys.stdin.readlines():  
+        # 00000000 c7 01 00 01 20 54 e2 cc 00 jh.kjkjhkhk
+        l = l.strip() # in case we have spaces before the offset
+        pos = l.find(' ')
+        l = l[pos+1:]
+        items = []
+        
+        tokens = l.strip().split(' ')
+        ntokens = 0
+        for t in tokens:
+            if not t: # empty token
+                continue
+            
+            if ntokens == itemPerLine:
+                break
+            
+            item = ''
+            if doHex:
+                item += '0x'
+            item += t
+            
+            items.append(item)
+            
+            ntokens += 1
+    
+        lines.append(', '.join(items))
+    
+    print(",\n".join(lines))