gfx/layers/genTables.py

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     1 #!/usr/bin/python
     3 def table_generator(f):
     4   return ",\n".join([", ".join(["0x%2.2x" % h for h in [f(i) for i in range(r,r+16)]]) for r in range(0, 65536, 16)])
     6 with open("PremultiplyTables.h", "w") as f:
     7   f.write("const uint8_t PremultiplyTable[256*256] = {\n");
     8   f.write(table_generator(lambda i: ((i / 256) * (i % 256) + 254) / 255) + "\n")
     9   f.write("};\n");
    10   f.write("const uint8_t UnpremultiplyTable[256*256] = {\n");
    11   f.write(table_generator(lambda i: (i % 256) * 255 / ((i / 256) if (i / 256) > 0 else 255) % 256) + "\n")
    12   f.write("};\n");

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