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| -rw-r--r-- | TODO | 49 |
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@@ -0,0 +1,49 @@ +Most TODOs live in the TODO section of doc/file.man (i.e. file(1)). +They are more visible there, so please add any further TODOs to that +file, not here. More speculative material can live here. + +(This change was made when Reuben Thomas noticed that all the bugs +listed in the BUGS section of the man page had been fixed!) + +--- +It would be nice to simplify file considerably. For example, +reimplement the apprentice and non-pattern magic methods in Python, +and compile the magic patterns to a giant regex (or something similar; +maybe using Ragel (http://www.complang.org/ragel/)) so that only a +small amount of C is needed (because fast execution is typically only +required for soft magic, not the more detailed information given by +hard-wired routines). In this regard, note that hplip, which is +BSD-licensed, has a magic reimplementation in Python. +--- +Read the kerberos magic entry for more ideas. +--- +Write a string merger to make magic entry sizes dynamic. +Strings will be converted to offsets from the string table. +--- +Programming language support, we can introduce the concept of a group +of rules where n rules need to match before the rule is positive. This +could require structural changes to the matching code :-( + +0 group 2 # require 2 matches +# rule 1 +>0 .... +... +# rule 2 +>0 .... +... +--- +- Merge the stat code dance in one place and keep it in one place + (perhaps struct buffer). +- Enable seeking around if offset > nbytes if possible (the fd + is seekable). +- We could use file_pipe2file more (for EOF offsets, CDF documents), + but that is expensive; perhaps we should provide a way to disable it +- The implementation of struct buffer needs re-thinking and more work. + For example we don't always pass the fd in the child. This is not + important yet as we don't have yet cases where use/indirect magic + needs negative offsets. +- Really the whole thing just needs here's an (offset, buffer, size) + you have (filebuffer, filebuffersize &&|| fd), fill the buffer with + data from offset. The buffer API should be changed to just do that. + +christos |