# $File: c-lang,v 1.32 2023/06/16 19:57:19 christos Exp $

#------------------------------------------------------------------------------
# $File: c-lang,v 1.32 2023/06/16 19:57:19 christos Exp $
# c-lang: file(1) magic for C and related languages programs
#
# The strength is to beat standard HTML

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

# C
# Check for class if include is found, otherwise class is beaten by include because of lowered strength
0 search/8192 #include
>0 regex \^#include C
>>0 regex \^class[[:space:]]+
>>>&0 regex \\{[\.\*]\\}(;)?$ \b++
>>&0 clear x source text
!:strength + 15
!:mime text/x-c
0 search/8192 pragma
>0 regex \^#[[:space:]]*pragma C source text
!:mime text/x-c
0 search/8192 endif
>0 regex \^#[[:space:]]*(if\|ifn)def
>>&0 regex \^#[[:space:]]*endif$ C source text
!:mime text/x-c
0 search/8192 define
>0 regex \^#[[:space:]]*(if\|ifn)def
>>&0 regex \^#[[:space:]]*define C source text
!:mime text/x-c
0 search/8192 char
>0 regex \^[[:space:]]*char(\ \\*|\\*)(.+)(=.*)?;[[:space:]]*$ C source text
!:mime text/x-c
0 search/8192 double
>0 regex \^[[:space:]]*double(\ \\*|\\*)(.+)(=.*)?;[[:space:]]*$ C source text
!:mime text/x-c
0 search/8192 extern
>0 regex \^[[:space:]]*extern[[:space:]]+ C source text
!:mime text/x-c
0 search/8192 float
>0 regex \^[[:space:]]*float(\ \\*|\\*)(.+)(=.*)?;[[:space:]]*$ C source text
!:mime text/x-c
0 search/8192 struct
>0 regex \^struct[[:space:]]+ C source text
!:mime text/x-c
0 search/8192 union
>0 regex \^union[[:space:]]+ C source text
!:mime text/x-c
0 search/8192 main(
>&0 search/64 String Java source text
!:mime text/x-java
>&0 default x
>>&0 regex \\)[[:space:]]*\\{ C source text
!:mime text/x-c

# C++
# The strength of these rules is increased so they beat the C rules above
0 search/8192 namespace
>0 regex \^namespace[[:space:]]+[_[:alpha:]]{1,30}[[:space:]]*\\{ C++ source text
!:strength + 30
!:mime text/x-c++
# using namespace [namespace] or using std::[lib]
0 search/8192 using
>0 regex \^using[[:space:]]+(namespace\ )?std(::)?[[:alpha:]]*[[:space:]]*; C++ source text
!:strength + 30
!:mime text/x-c++
0 search/8192 template
>0 regex \^[[:space:]]*template[[:space:]]*<.*>[[:space:]]*$ C++ source text
!:strength + 30
!:mime text/x-c++
0 search/8192 virtual
>0 regex \^[[:space:]]*virtual[[:space:]]+.*[};][[:space:]]*$ C++ source text
!:strength + 30
!:mime text/x-c++
# But class alone is reduced to avoid beating php (Jens Schleusener)
0 search/8192 class
>0 regex \^[[:space:]]*class[[:space:]]+[[:digit:][:alpha:]:_]+[[:space:]]*\\{(.*[\n]*)*\\}(;)?$ C++ source text
!:strength + 13
!:mime text/x-c++
0 search/8192 public
>0 regex \^[[:space:]]*public: C++ source text
!:strength + 30
!:mime text/x-c++
0 search/8192 private
>0 regex \^[[:space:]]*private: C++ source text
!:strength + 30
!:mime text/x-c++
0 search/8192 protected
>0 regex \^[[:space:]]*protected: C++ source text
!:strength + 30
!:mime text/x-c++

# Objective-C
0 search/8192 #import
>0 regex \^#import[[:space:]]+["<] Objective-C source text
!:strength + 25
!:mime text/x-objective-c

# From: Mikhail Teterin <[email protected]>
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)