cppi1

Usage

Overview

Indent the C preprocessor directives in FILE to reflect their nesting and ensure that there is exactly one space character between each #if, #elif, #define directive and the following token, and write the result to standard output. The number of spaces between the `#' and the following directive must correspond to the level of nesting of that directive. With no FILE, or when FILE is -, read standard input.

-a, --ansi

when checking, fail if text follows #else or #endif

-c, --check

set exit code, but don't produce any output

-l, --list-files-only

don't generate diagnostics about indentation; print to stdout only the names of files that are not properly indented

-m, --max-string-length=LENGTH

fail if there is a double-quoted string longer than LENGTH; if LENGTH is 0 (the default), then there is no limit

--help

display this help and exit

--version

output version information and exit

With the -c option, don't write to stdout. Instead, check the indentation of the specified files giving diagnostics for preprocessor lines that aren't properly indented or are otherwise invalid.

Note that --ansi without --check does not correct the problem of non-ANSI text following #else and #endif directives.