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# RREX
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## Regular expression interpreter / validator
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This regular expression validator is made with the target to be faster than the glibc regular expression validator and with success. In 23/25 tests it scores a better result than the original glibc validator. My bytecode compiler is way faster than the one provided by glibc and my executor often. For single validation, my validator is always a better choice.
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## Benchmark and test
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Benchmark vs. glibc regex. (Animated gif, takes some time to load)
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## Todo / issues
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- Segmenation fault fix is expr ends with \\d?
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- rassert(!rrex("123", "[123]+b")); doesn't work
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- abc with abc[gg]d matches valid. Shouldn't be so
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## Make
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### `all:`
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Runs the following tasks sequentially:
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- **`one-file:`** Merges, formats, and compiles a single C file.
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- **`format_all:`** Formats all `.c` and `.h` files using `clang-format`.
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- **`build:`** Compiles the main program (`rrex2.c`) with optimization and static linking.
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- **`run:`** Executes the compiled program (`rrex2`).
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### `format_all:`
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Formats all `.c` and `.h` files in the directory using `clang-format`.
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### `build:`
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Compiles `rrex2.c` into an executable named `rrex2` with optimization (`-O2`), all warnings enabled (`-Wall`), and extra warnings enabled (`-Wextra`). The executable is statically linked.
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### `run:`
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Runs the compiled program (`rrex2`).
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### `test:`
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Rebuilds the project by running the `build` target and then runs the program with `test` as an argument.
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### `cli:`
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Runs the `build` target and then executes the program in CLI mode.
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### `compiler:`
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Compiles `compiler.c` into an optimized executable `compiler.o` and then runs it.
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### `backup:`
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Creates a compressed archive (`rrex.rzip`) of all `.c`, `.h`, Makefile, and markdown files in the directory.
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### `coverage:`
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Generates code coverage information:
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- Removes existing coverage data files.
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- Compiles `rrex2.c` with profiling and test coverage flags.
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- Executes the compiled coverage binary with `test` as an argument.
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- Captures coverage data with `lcov` and generates an HTML report using `genhtml`.
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- Opens the coverage report in Google Chrome.
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- Cleans up intermediate coverage files and the binary.
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