Backed out changeset bd55bd27bb1e (bug 1361900)

js/xpconnect/loader/script_cache.py

@@ -1,81 +0,0 @@
-#!/usr/bin/env python
-import io
-import os
-import struct
-import sys
-
-MAGIC = b'mozXDRcachev001\0'
-
-
-def usage():
-    print("""Usage: script_cache.py <file.bin> ...
-
-        Decodes and prints out the contents of a startup script cache file
-        (e.g., startupCache/scriptCache.bin) in human-readable form.""")
-
-    sys.exit(1)
-
-
-class ProcessTypes:
-    Default = 0
-    Web = 1
-    Extension = 2
-
-    def __init__(self, val):
-        self.val = val
-
-    def __str__(self):
-        res = []
-        if self.val & (1 << self.Default):
-            res.append('Parent')
-        if self.val & (1 << self.Web):
-            res.append('Web')
-        if self.val & (1 << self.Extension):
-            res.append('Extension')
-        return '|'.join(res)
-
-
-class InputBuffer(object):
-
-    def __init__(self, data):
-        self.data = data
-        self.offset = 0
-
-    @property
-    def remaining(self):
-        return len(self.data) - self.offset
-
-    def unpack(self, fmt):
-        res = struct.unpack_from(fmt, self.data, self.offset)
-        self.offset += struct.calcsize(fmt)
-        return res
-
-    def unpack_str(self):
-        size, = self.unpack('<H')
-        res = self.data[self.offset:self.offset + size].decode('utf-8')
-        self.offset += size
-        return res
-
-
-if len(sys.argv) < 2 or not os.path.exists(sys.argv[1]):
-    usage()
-
-for filename in sys.argv[1:]:
-    with io.open(filename, 'rb') as f:
-        magic = f.read(len(MAGIC))
-        if magic != MAGIC:
-            raise Exception('Bad magic number')
-
-        hdrSize, = struct.unpack('<I', f.read(4))
-
-        hdr = InputBuffer(f.read(hdrSize))
-
-        i = 0
-        while hdr.remaining:
-            i += 1
-            print('{}: {}'.format(i, hdr.unpack_str()))
-            print('  Key:       {}'.format(hdr.unpack_str()))
-            print('  Offset:    {:>9,}'.format(*hdr.unpack('<I')))
-            print('  Size:      {:>9,}'.format(*hdr.unpack('<I')))
-            print('  Processes: {}'.format(ProcessTypes(*hdr.unpack('B'))))
-            print('')