Parsing C header files to extract information about data types, functions and function arguments

I have a C header file. I want to parse it and extract information about data types, functions and functions arguments. Who can help me? I need some example in C.

开发者_Go百科Thank you very much.

You could try Clang. In special The Lexer and Preprocessor Library.

Use ANTLR. There's a decent grammar for C already written for you, and ANTLR will generate C code (or some other languages if you prefer), which you can then traverse to get what you want.

There is also srcml. Similar to c2xml it uses source code directly. c2xml starts from preprocessor output. Assume good C coding rules (as opposed to arbitrary use of preprocessing) this has been an advantage for my re-engineering tasks, as it preserves the names of #defines and being able to process selected macros in a specific way.

The DMS Software Reengineering Toolkit with its C Front End can do this.

DMS provides general purpose parsing, symbol table construction, flow analysis, and program transformations, parameterized by a language definition. Using DMS's C front end, DMS will parse any of a variety of C dialects, builds ASTs for the code elements, builds full symbol tables doing complete name and type resolution of all symbols (including parameter lists in function headers); you can stop there and dump those out. DMS can also do control and data flow analysis on the C code; you can use othe DMS facilities to further analyze or transform the code. (The C front end has a full C preprocessor built-in).

The EDG front end can also be used for parsing and symbol tables, but does not have the other capabilities of DMS.

Yet another option is to use the c2xml tool from "sparse". Its C parser isn't 100% standard-compliant (e.g. it won't parse K&R-style declarations), but for reasonably modern C code it works quite well.

If you need a human-readable output (e.g. in html or PDF), then you can use doxygene/doxywizard. In doxywizard "All entities" has to be selected.