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+"============================================================================
+"File: c.vim
+"Description: Syntax checking plugin for syntastic.vim
+"Maintainer: Gregor Uhlenheuer <kongo2002 at gmail dot com>
+"License: This program is free software. It comes without any warranty,
+" to the extent permitted by applicable law. You can redistribute
+" it and/or modify it under the terms of the Do What The Fuck You
+" Want To Public License, Version 2, as published by Sam Hocevar.
+" See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+
+" In order to also check header files add this to your .vimrc:
+" (this usually creates a .gch file in your source directory)
+"
+" let g:syntastic_c_check_header = 1
+"
+" To disable the search of included header files after special
+" libraries like gtk and glib add this line to your .vimrc:
+"
+" let g:syntastic_c_no_include_search = 1
+"
+" To enable header files being re-checked on every file write add the
+" following line to your .vimrc. Otherwise the header files are checked only
+" one time on initially loading the file.
+" In order to force syntastic to refresh the header includes simply
+" unlet b:syntastic_c_includes. Then the header files are being re-checked on
+" the next file write.
+"
+" let g:syntastic_c_auto_refresh_includes = 1
+"
+" Alternatively you can set the buffer local variable b:syntastic_c_cflags.
+" If this variable is set for the current buffer no search for additional
+" libraries is done. I.e. set the variable like this:
+"
+" let b:syntastic_c_cflags = ' -I/usr/include/libsoup-2.4'
+"
+" In order to add some custom include directories that should be added to the
+" gcc command line you can add those to the global variable
+" g:syntastic_c_include_dirs. This list can be used like this:
+"
+" let g:syntastic_c_include_dirs = [ 'includes', 'headers' ]
+"
+" Moreover it is possible to add additional compiler options to the syntax
+" checking execution via the variable 'g:syntastic_c_compiler_options':
+"
+" let g:syntastic_c_compiler_options = ' -ansi'
+"
+" Using the global variable 'g:syntastic_c_remove_include_errors' you can
+" specify whether errors of files included via the g:syntastic_c_include_dirs'
+" setting are removed from the result set:
+"
+" let g:syntastic_c_remove_include_errors = 1
+
+if exists('loaded_c_syntax_checker')
+ finish
+endif
+let loaded_c_syntax_checker = 1
+
+if !executable('gcc')
+ finish
+endif
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+" default include directories
+let s:default_includes = [ '.', '..', 'include', 'includes',
+ \ '../include', '../includes' ]
+
+" uniquify the input list
+function! s:Unique(list)
+ let l = []
+ for elem in a:list
+ if index(l, elem) == -1
+ let l = add(l, elem)
+ endif
+ endfor
+ return l
+endfunction
+
+" get the gcc include directory argument depending on the default
+" includes and the optional user-defined 'g:syntastic_c_include_dirs'
+function! s:GetIncludeDirs()
+ let include_dirs = s:default_includes
+
+ if exists('g:syntastic_c_include_dirs')
+ call extend(include_dirs, g:syntastic_c_include_dirs)
+ endif
+
+ return join(map(s:Unique(include_dirs), '"-I" . v:val'), ' ')
+endfunction
+
+function! SyntaxCheckers_c_GetLocList()
+ let makeprg = 'gcc -fsyntax-only -std=gnu99 '.shellescape(expand('%')).
+ \ ' '.s:GetIncludeDirs()
+ let errorformat = '%-G%f:%s:,%-G%f:%l: %#error: %#(Each undeclared '.
+ \ 'identifier is reported only%.%#,%-G%f:%l: %#error: %#for '.
+ \ 'each function it appears%.%#,%-GIn file included%.%#,'.
+ \ '%-G %#from %f:%l\,,%f:%l:%c: %m,%f:%l: %trror: %m,%f:%l: %m'
+
+ " determine whether to parse header files as well
+ if expand('%') =~? '.h$'
+ if exists('g:syntastic_c_check_header')
+ let makeprg = 'gcc -c '.shellescape(expand('%')).
+ \ ' '.s:GetIncludeDirs()
+ else
+ return []
+ endif
+ endif
+
+ " add optional user-defined compiler options
+ if exists('g:syntastic_c_compiler_options')
+ let makeprg .= g:syntastic_c_compiler_options
+ endif
+
+ " check if the user manually set some cflags
+ if !exists('b:syntastic_c_cflags')
+ " check whether to search for include files at all
+ if !exists('g:syntastic_c_no_include_search') ||
+ \ g:syntastic_c_no_include_search != 1
+ " refresh the include file search if desired
+ if exists('g:syntastic_c_auto_refresh_includes') &&
+ \ g:syntastic_c_auto_refresh_includes != 0
+ let makeprg .= syntastic#c#SearchHeaders()
+ else
+ " search for header includes if not cached already
+ if !exists('b:syntastic_c_includes')
+ let b:syntastic_c_includes = syntastic#c#SearchHeaders()
+ endif
+ let makeprg .= b:syntastic_c_includes
+ endif
+ endif
+ else
+ " use the user-defined cflags
+ let makeprg .= b:syntastic_c_cflags
+ endif
+
+ " process makeprg
+ let errors = SyntasticMake({ 'makeprg': makeprg,
+ \ 'errorformat': errorformat })
+
+ " filter the processed errors if desired
+ if exists('g:syntastic_c_remove_include_errors') &&
+ \ g:syntastic_c_remove_include_errors != 0
+ return filter(errors,
+ \ 'has_key(v:val, "bufnr") && v:val["bufnr"]=='.bufnr(''))
+ else
+ return errors
+ endif
+endfunction
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set et sts=4 sw=4: