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    <p>For Windows only, and not FOSS but you said "any direction..."</p> <p>Our <a href="http://www.semanticdesigns.com/Products/DMS/DMSToolkit.html" rel="nofollow">DMS Software Reengineering Toolkit"</a> with its <a href="http://www.semanticdesigns.com/Products/FrontEnds/CFrontEnd.html" rel="nofollow">C Front End</a> can apply transformations to C source code. DMS can be configured to carry out custom, complex <em>reliable</em> transformations, although the configuration isn't as easy as typing just a command like "refactor frazzle by doobaz".</p> <p>One of the principal stumbling blocks is still the preprocessor. DMS can transform code that has preprocessor directives in typical places (around statements, expressions, if/for/while loop heads, declarations, etc.) but other "unstructured conditionals" give it trouble. You can run DMS by expanding the preprocessor directives out of existence, or more imporantly, expanding out the ones that give it trouble, but mostly people don't like this because they prefer to keep thier preprocessor directives. So it isn't perfect.</p> <p>[Another answer suggested Concinelle, which looks pretty good from my point of view. As far as I know, it doesn't handle preprocessor directives at all; I could be wrong and it might handle some cases as DMS does, but I'm sure it can't handle all the cases].</p> <p>You don't want to consider rolling your own. Building a transformation/refactoring tool is much harder than you might guess having never tried it. You need full, accurate parsers for the (C) dialect of interest and just that is pretty hard to get right. You need a preprocessor, symbol tables, flow analysis, transformation, code regeneration machinery, ... this stuff takes years of effort to build and get right. Trust me, been there, done that.</p>
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    1. POCode refactoring tools for C, usable on GNU/Linux? FOSS preferable
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    1. COIt's pretty obvious from the context of '... any direction...', that I was referring to any direction towards my stated requirements. The question was never "help me find *ANY* refactoring tool". In addition ... when I said 'roll my own', I was talking about 'rolling' my own solution. Taking care of the problem, possibly by creating some shell scripts, never would I consider creating an entire refactoring project. I'm just not at that level, and I've known this for a very long time.
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    2. CO@TechZilla: When you say "any direction", you cast a very wide net. When I hear somebody say "roll" (their own), I interpret that as "willing to build something" with significant effort; I responded to that interpretation. I assume other folks do, too. [FWIW, DMS seems to run fine under Wine on Linux, but most users of Linux seem to detest that solution.]
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