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| author |  Joey Hess <joey@kitenet.net> | 2014-06-13 02:18:31 -0400 |
|---|---|---|
| committer | Joey Hess <joey@kitenet.net> | 2014-06-13 02:18:31 -0400 |
| commit | 9c45b88e31d9d04fa0b65b2c9c539716ce05372e (patch) | |
| tree | ff5430311f68fefab4b2a91b773b75bd25f96852 /Build | |
| parent | 92ad1f697141fc781429440362b352f2c3c43542 (diff) | |
make EvilSplicer re-box file-embed's ByteStrings
The armel autobuilder started failing:
Assistant/WebApp/Types.hs:128:14:
primitive string literal must contain only characters <= '\xFF'
This fixes that.
Diffstat (limited to 'Build')
| -rw-r--r-- | Build/EvilSplicer.hs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Build/EvilSplicer.hs b/Build/EvilSplicer.hs index a8046b994..6b80929af 100644 --- a/Build/EvilSplicer.hs +++ b/Build/EvilSplicer.hs @@ -310,6 +310,7 @@ mangleCode = flip_colon . yesod_url_render_hack . text_builder_hack . nested_instances + . boxed_fileembed . collapse_multiline_strings . remove_package_version . emptylambda @@ -553,6 +554,42 @@ mangleCode = flip_colon - The ; is added by case_layout. -} flip_colon = replace "; : _ " "; _ : " +{- Embedded files use unsafe packing, which is problimatic + - for several reasons, including that GHC sometimes omits trailing + - newlines in the file content, which leads to the wrong byte + - count. Also, GHC sometimes outputs unicode characters, which + - are not legal in unboxed strings. + - + - Avoid problems by converting: + - GHC.IO.unsafePerformIO + - (Data.ByteString.Unsafe.unsafePackAddressLen + - lllll + - "blabblah"#)), + - to: + - Data.ByteString.Char8.pack "blabblah"), + - + - Note that the string is often multiline. This only works if + - collapse_multiline_strings has run first. + -} +boxed_fileembed :: String -> String +boxed_fileembed = parsecAndReplace $ do + i <- indent + void $ string "GHC.IO.unsafePerformIO" + void newline + void indent + void $ string "(Data.ByteString.Unsafe.unsafePackAddressLen" + void newline + void indent + void number + void newline + void indent + void $ char '"' + s <- restOfLine + let s' = take (length s - 5) s + if "\"#))," `isSuffixOf` s + then return (i ++ "Data.ByteString.Char8.pack \"" ++ s' ++ "\"),\n") + else fail "not an unboxed string" + {- This works around a problem in the expanded template haskell for Yesod - type-safe url rendering. - |