Looking for simple C Preprocessor source

      Hi. I'm writing a computer game that has it's own scripting and
level definition language, created with FLEX and ACCENT. Now, because
the language requires so many constants shared with the main game in
C++, I run it through the C preprocessor to allow me to use include
files and defines before using my own level compiler on it.


      Problem: my language contains '#' symbols, large fields of symbols
that aren't supposed to be interpreted the way C would and other
differences that tend to choke the preprocessor. So I need to find the
source code for a _simple_ C preprocessor, preferably one someone made
as a hobby project, so that I can hack it into a suitable preprocessor
for my own project.


      All it needs to have is #include and #define (for constants, not
macros) though the conditional compilation and macro support would be
useful. But the source needs to be relatively compre- hensible so I
can change it, and reasonably short (say, < 100k). I don't want to
try and learn to understand the GCC source for this mickey mouse kind
of hack. Obviously, I could write this myself, but it's a fair amount
of work and I'd rather not "reinvent the wheel" in this circumstance.


      I found 'P', the Small C Preprocessor from Dr. Dobbs, but it's
written in _small_ C, which means that A) it won't compile in normal C
on my machine due to Small-C wierdness, and B) it has implemented a
symbol table without structs (Small-C doesn't have structs), making
the source nearly unintelligable. So this option is ruled out.


      Can anybody help?


-- Julian Mensch
[If you just want something for your own use, a simple preprocessor with
include and define is a few dozen lines of perl. -John]

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