file/magic/Magdir/c-lang

#------------------------------------------------------------------------------
# $File: c-lang,v 1.20 2015/07/27 14:33:10 christos Exp $
# c-lang:  file(1) magic for C and related languages programs
#

# BCPL
0	search/8192	"libhdr"	BCPL source text
!:mime	text/x-bcpl
0	search/8192	"LIBHDR"	BCPL source text
!:mime	text/x-bcpl

# C
0	regex	\^#include	C source text
!:mime	text/x-c
0	regex	\^char[\ \t\n]+	C source text
!:mime	text/x-c
0	regex	\^double[\ \t\n]+		C source text
!:mime	text/x-c
0	regex	\^extern[\ \t\n]+		C source text
!:mime	text/x-c
0	regex	\^float[\ \t\n]+		C source text
!:mime	text/x-c
0	regex	\^struct[\ \t\n]+		C source text
!:mime	text/x-c
0	regex	\^union[\ \t\n]+		C source text
!:mime	text/x-c
0	search/8192	main(		C source text
!:mime	text/x-c

# C++
# The strength of these rules is increased so they beat the C rules above
0	regex	\^template[\ \t]+<.*>[\ \t\n]+	C++ source text
!:strength + 5
!:mime	text/x-c++
0	regex	\^virtual[\ \t\n]+		C++ source text
!:strength + 5
!:mime	text/x-c++
0	regex	\^class[\ \t\n]+		C++ source text
!:strength + 5
!:mime	text/x-c++
0	regex	\^public:		C++ source text
!:strength + 5
!:mime	text/x-c++
0	regex	\^private:		C++ source text
!:strength + 5
!:mime	text/x-c++

# From: Mikhail Teterin <mi@aldan.algebra.com> 
0	string		cscope		cscope reference data
>7	string		x		version %.2s
# We skip the path here, because it is often long (so file will
# truncate it) and mostly redundant.
# The inverted index functionality was added some time between
# versions 11 and 15, so look for -q if version is above 14:
>7	string		>14
>>10	search/100	\ -q\ 		with inverted index
>10	search/100	\ -c\ 		text (non-compressed)