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Langue: en

Version: March 2010 (fedora - 01/12/10)

Section: 1 (Commandes utilisateur)


cppi - indent the C preprocessor directives in FILE to reflect their nesting


cppi [FILE]
cppi -c [OPTION] [FILE]...


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
display this help and exit
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.

The exit code will be one of these:

all directives properly indented
some cpp directive(s) improperly indented, or if text follows #else/#endif (enabled with --check --ansi), or found a double-quoted string longer than the specified maximum
#if/#endif mismatch, EOF in comment or string
file (e.g. open/read/write) error

A pragma directive may have its `#' indented.


Written by Jim Meyering.


Report bugs to <>. Copyright © 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


The full documentation for cppi is maintained as a Texinfo manual. If the info and cppi programs are properly installed at your site, the command
info cppi

should give you access to the complete manual.

Si vous ne pouvez, à la longue, faire savoir à tout le monde
ce que vous avez fait, c'est que ça vaut rien.
-+- Erwin Schrödinger -+-