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| ft.vim |
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" Vim functions for file type detection
"
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Last Change: 2019 Jan 18
" These functions are moved here from runtime/filetype.vim to make startup
" faster.
" Line continuation is used here, remove 'C' from 'cpoptions'
let s:cpo_save = &cpo
set cpo&vim
func dist#ft#Check_inp()
if getline(1) =~ '^\*'
setf abaqus
else
let n = 1
if line("$") > 500
let nmax = 500
else
let nmax = line("$")
endif
while n <= nmax
if getline(n) =~? "^header surface data"
setf trasys
break
endif
let n = n + 1
endwhile
endif
endfunc
" This function checks for the kind of assembly that is wanted by the user, or
" can be detected from the first five lines of the file.
func dist#ft#FTasm()
" make sure b:asmsyntax exists
if !exists("b:asmsyntax")
let b:asmsyntax = ""
endif
if b:asmsyntax == ""
call dist#ft#FTasmsyntax()
endif
" if b:asmsyntax still isn't set, default to asmsyntax or GNU
if b:asmsyntax == ""
if exists("g:asmsyntax")
let b:asmsyntax = g:asmsyntax
else
let b:asmsyntax = "asm"
endif
endif
exe "setf " . fnameescape(b:asmsyntax)
endfunc
func dist#ft#FTasmsyntax()
" see if file contains any asmsyntax=foo overrides. If so, change
" b:asmsyntax appropriately
let head = " ".getline(1)." ".getline(2)." ".getline(3)." ".getline(4).
\" ".getline(5)." "
let match = matchstr(head, '\sasmsyntax=\zs[a-zA-Z0-9]\+\ze\s')
if match != ''
let b:asmsyntax = match
elseif ((head =~? '\.title') || (head =~? '\.ident') || (head =~? '\.macro') || (head =~? '\.subtitle') || (head =~? '\.library'))
let b:asmsyntax = "vmasm"
endif
endfunc
" Check if one of the first five lines contains "VB_Name". In that case it is
" probably a Visual Basic file. Otherwise it's assumed to be "alt" filetype.
func dist#ft#FTVB(alt)
if getline(1).getline(2).getline(3).getline(4).getline(5) =~? 'VB_Name\|Begin VB\.\(Form\|MDIForm\|UserControl\)'
setf vb
else
exe "setf " . a:alt
endif
endfunc
func dist#ft#FTbtm()
if exists("g:dosbatch_syntax_for_btm") && g:dosbatch_syntax_for_btm
setf dosbatch
else
setf btm
endif
endfunc
func dist#ft#BindzoneCheck(default)
if getline(1).getline(2).getline(3).getline(4) =~ '^; <<>> DiG [0-9.]\+.* <<>>\|$ORIGIN\|$TTL\|IN\s\+SOA'
setf bindzone
elseif a:default != ''
exe 'setf ' . a:default
endif
endfunc
func dist#ft#FTlpc()
if exists("g:lpc_syntax_for_c")
let lnum = 1
while lnum <= 12
if getline(lnum) =~# '^\(//\|inherit\|private\|protected\|nosave\|string\|object\|mapping\|mixed\)'
setf lpc
return
endif
let lnum = lnum + 1
endwhile
endif
setf c
endfunc
func dist#ft#FTheader()
if match(getline(1, min([line("$"), 200])), '^@\(interface\|end\|class\)') > -1
if exists("g:c_syntax_for_h")
setf objc
else
setf objcpp
endif
elseif exists("g:c_syntax_for_h")
setf c
elseif exists("g:ch_syntax_for_h")
setf ch
else
setf cpp
endif
endfunc
" This function checks if one of the first ten lines start with a '@'. In
" that case it is probably a change file.
" If the first line starts with # or ! it's probably a ch file.
" If a line has "main", "include", "//" or "/*" it's probably ch.
" Otherwise CHILL is assumed.
func dist#ft#FTchange()
let lnum = 1
while lnum <= 10
if getline(lnum)[0] == '@'
setf change
return
endif
if lnum == 1 && (getline(1)[0] == '#' || getline(1)[0] == '!')
setf ch
return
endif
if getline(lnum) =~ "MODULE"
setf chill
return
endif
if getline(lnum) =~ 'main\s*(\|#\s*include\|//'
setf ch
return
endif
let lnum = lnum + 1
endwhile
setf chill
endfunc
func dist#ft#FTent()
" This function checks for valid cl syntax in the first five lines.
" Look for either an opening comment, '#', or a block start, '{".
" If not found, assume SGML.
let lnum = 1
while lnum < 6
let line = getline(lnum)
if line =~ '^\s*[#{]'
setf cl
return
elseif line !~ '^\s*$'
" Not a blank line, not a comment, and not a block start,
" so doesn't look like valid cl code.
break
endif
let lnum = lnum + 1
endw
setf dtd
endfunc
func dist#ft#EuphoriaCheck()
if exists('g:filetype_euphoria')
exe 'setf ' . g:filetype_euphoria
else
setf euphoria3
endif
endfunc
func dist#ft#DtraceCheck()
let lines = getline(1, min([line("$"), 100]))
if match(lines, '^module\>\|^import\>') > -1
" D files often start with a module and/or import statement.
setf d
elseif match(lines, '^#!\S\+dtrace\|#pragma\s\+D\s\+option\|:\S\{-}:\S\{-}:') > -1
setf dtrace
else
setf d
endif
endfunc
func dist#ft#FTe()
if exists('g:filetype_euphoria')
exe 'setf ' . g:filetype_euphoria
else
let n = 1
while n < 100 && n < line("$")
if getline(n) =~ "^\\s*\\(<'\\|'>\\)\\s*$"
setf specman
return
endif
let n = n + 1
endwhile
setf eiffel
endif
endfunc
" Distinguish between HTML, XHTML and Django
func dist#ft#FThtml()
let n = 1
while n < 10 && n < line("$")
if getline(n) =~ '\<DTD\s\+XHTML\s'
setf xhtml
return
endif
if getline(n) =~ '{%\s*\(extends\|block\|load\)\>\|{#\s\+'
setf htmldjango
return
endif
let n = n + 1
endwhile
setf html
endfunc
" Distinguish between standard IDL and MS-IDL
func dist#ft#FTidl()
let n = 1
while n < 50 && n < line("$")
if getline(n) =~ '^\s*import\s\+"\(unknwn\|objidl\)\.idl"'
setf msidl
return
endif
let n = n + 1
endwhile
setf idl
endfunc
" Distinguish between "default" and Cproto prototype file. */
func dist#ft#ProtoCheck(default)
" Cproto files have a comment in the first line and a function prototype in
" the second line, it always ends in ";". Indent files may also have
" comments, thus we can't match comments to see the difference.
" IDL files can have a single ';' in the second line, require at least one
" chacter before the ';'.
if getline(2) =~ '.;$'
setf cpp
else
exe 'setf ' . a:default
endif
endfunc
func dist#ft#FTm()
let n = 1
let saw_comment = 0 " Whether we've seen a multiline comment leader.
while n < 100
let line = getline(n)
if line =~ '^\s*/\*'
" /* ... */ is a comment in Objective C and Murphi, so we can't conclude
" it's either of them yet, but track this as a hint in case we don't see
" anything more definitive.
let saw_comment = 1
endif
if line =~ '^\s*\(#\s*\(include\|import\)\>\|@import\>\|//\)'
setf objc
return
endif
if line =~ '^\s*%'
setf matlab
return
endif
if line =~ '^\s*(\*'
setf mma
return
endif
if line =~ '^\c\s*\(\(type\|var\)\>\|--\)'
setf murphi
return
endif
let n = n + 1
endwhile
if saw_comment
" We didn't see anything definitive, but this looks like either Objective C
" or Murphi based on the comment leader. Assume the former as it is more
" common.
setf objc
elseif exists("g:filetype_m")
" Use user specified default filetype for .m
exe "setf " . g:filetype_m
else
" Default is matlab
setf matlab
endif
endfunc
func dist#ft#FTmms()
let n = 1
while n < 10
let line = getline(n)
if line =~ '^\s*\(%\|//\)' || line =~ '^\*'
setf mmix
return
endif
if line =~ '^\s*#'
setf make
return
endif
let n = n + 1
endwhile
setf mmix
endfunc
" This function checks if one of the first five lines start with a dot. In
" that case it is probably an nroff file: 'filetype' is set and 1 is returned.
func dist#ft#FTnroff()
if getline(1)[0] . getline(2)[0] . getline(3)[0] . getline(4)[0] . getline(5)[0] =~ '\.'
setf nroff
return 1
endif
return 0
endfunc
func dist#ft#FTmm()
let n = 1
while n < 10
let line = getline(n)
if line =~ '^\s*\(#\s*\(include\|import\)\>\|@import\>\|/\*\)'
setf objcpp
return
endif
let n = n + 1
endwhile
setf nroff
endfunc
func dist#ft#FTpl()
if exists("g:filetype_pl")
exe "setf " . g:filetype_pl
else
" recognize Prolog by specific text in the first non-empty line
" require a blank after the '%' because Perl uses "%list" and "%translate"
let l = getline(nextnonblank(1))
if l =~ '\<prolog\>' || l =~ '^\s*\(%\+\(\s\|$\)\|/\*\)' || l =~ ':-'
setf prolog
else
setf perl
endif
endif
endfunc
func dist#ft#FTinc()
if exists("g:filetype_inc")
exe "setf " . g:filetype_inc
else
let lines = getline(1).getline(2).getline(3)
if lines =~? "perlscript"
setf aspperl
elseif lines =~ "<%"
setf aspvbs
elseif lines =~ "<?"
setf php
else
call dist#ft#FTasmsyntax()
if exists("b:asmsyntax")
exe "setf " . fnameescape(b:asmsyntax)
else
setf pov
endif
endif
endif
endfunc
func dist#ft#FTprogress_cweb()
if exists("g:filetype_w")
exe "setf " . g:filetype_w
return
endif
if getline(1) =~ '&ANALYZE' || getline(3) =~ '&GLOBAL-DEFINE'
setf progress
else
setf cweb
endif
endfunc
func dist#ft#FTprogress_asm()
if exists("g:filetype_i")
exe "setf " . g:filetype_i
return
endif
" This function checks for an assembly comment the first ten lines.
" If not found, assume Progress.
let lnum = 1
while lnum <= 10 && lnum < line('$')
let line = getline(lnum)
if line =~ '^\s*;' || line =~ '^\*'
call dist#ft#FTasm()
return
elseif line !~ '^\s*$' || line =~ '^/\*'
" Not an empty line: Doesn't look like valid assembly code.
" Or it looks like a Progress /* comment
break
endif
let lnum = lnum + 1
endw
setf progress
endfunc
func dist#ft#FTprogress_pascal()
if exists("g:filetype_p")
exe "setf " . g:filetype_p
return
endif
" This function checks for valid Pascal syntax in the first ten lines.
" Look for either an opening comment or a program start.
" If not found, assume Progress.
let lnum = 1
while lnum <= 10 && lnum < line('$')
let line = getline(lnum)
if line =~ '^\s*\(program\|unit\|procedure\|function\|const\|type\|var\)\>'
\ || line =~ '^\s*{' || line =~ '^\s*(\*'
setf pascal
return
elseif line !~ '^\s*$' || line =~ '^/\*'
" Not an empty line: Doesn't look like valid Pascal code.
" Or it looks like a Progress /* comment
break
endif
let lnum = lnum + 1
endw
setf progress
endfunc
func dist#ft#FTr()
let max = line("$") > 50 ? 50 : line("$")
for n in range(1, max)
" Rebol is easy to recognize, check for that first
if getline(n) =~? '\<REBOL\>'
setf rebol
return
endif
endfor
for n in range(1, max)
" R has # comments
if getline(n) =~ '^\s*#'
setf r
return
endif
" Rexx has /* comments */
if getline(n) =~ '^\s*/\*'
setf rexx
return
endif
endfor
" Nothing recognized, use user default or assume Rexx
if exists("g:filetype_r")
exe "setf " . g:filetype_r
else
" Rexx used to be the default, but R appears to be much more popular.
setf r
endif
endfunc
func dist#ft#McSetf()
" Rely on the file to start with a comment.
" MS message text files use ';', Sendmail files use '#' or 'dnl'
for lnum in range(1, min([line("$"), 20]))
let line = getline(lnum)
if line =~ '^\s*\(#\|dnl\)'
setf m4 " Sendmail .mc file
return
elseif line =~ '^\s*;'
setf msmessages " MS Message text file
return
endif
endfor
setf m4 " Default: Sendmail .mc file
endfunc
" Called from filetype.vim and scripts.vim.
func dist#ft#SetFileTypeSH(name)
if did_filetype()
" Filetype was already detected
return
endif
if expand("<amatch>") =~ g:ft_ignore_pat
return
endif
if a:name =~ '\<csh\>'
" Some .sh scripts contain #!/bin/csh.
call dist#ft#SetFileTypeShell("csh")
return
elseif a:name =~ '\<tcsh\>'
" Some .sh scripts contain #!/bin/tcsh.
call dist#ft#SetFileTypeShell("tcsh")
return
elseif a:name =~ '\<zsh\>'
" Some .sh scripts contain #!/bin/zsh.
call dist#ft#SetFileTypeShell("zsh")
return
elseif a:name =~ '\<ksh\>'
let b:is_kornshell = 1
if exists("b:is_bash")
unlet b:is_bash
endif
if exists("b:is_sh")
unlet b:is_sh
endif
elseif exists("g:bash_is_sh") || a:name =~ '\<bash\>' || a:name =~ '\<bash2\>'
let b:is_bash = 1
if exists("b:is_kornshell")
unlet b:is_kornshell
endif
if exists("b:is_sh")
unlet b:is_sh
endif
elseif a:name =~ '\<sh\>'
let b:is_sh = 1
if exists("b:is_kornshell")
unlet b:is_kornshell
endif
if exists("b:is_bash")
unlet b:is_bash
endif
endif
call dist#ft#SetFileTypeShell("sh")
endfunc
" For shell-like file types, check for an "exec" command hidden in a comment,
" as used for Tcl.
" Also called from scripts.vim, thus can't be local to this script.
func dist#ft#SetFileTypeShell(name)
if did_filetype()
" Filetype was already detected
return
endif
if expand("<amatch>") =~ g:ft_ignore_pat
return
endif
let l = 2
while l < 20 && l < line("$") && getline(l) =~ '^\s*\(#\|$\)'
" Skip empty and comment lines.
let l = l + 1
endwhile
if l < line("$") && getline(l) =~ '\s*exec\s' && getline(l - 1) =~ '^\s*#.*\\$'
" Found an "exec" line after a comment with continuation
let n = substitute(getline(l),'\s*exec\s\+\([^ ]*/\)\=', '', '')
if n =~ '\<tclsh\|\<wish'
setf tcl
return
endif
endif
exe "setf " . a:name
endfunc
func dist#ft#CSH()
if did_filetype()
" Filetype was already detected
return
endif
if exists("g:filetype_csh")
call dist#ft#SetFileTypeShell(g:filetype_csh)
elseif &shell =~ "tcsh"
call dist#ft#SetFileTypeShell("tcsh")
else
call dist#ft#SetFileTypeShell("csh")
endif
endfunc
let s:ft_rules_udev_rules_pattern = '^\s*\cudev_rules\s*=\s*"\([^"]\{-1,}\)/*".*'
func dist#ft#FTRules()
let path = expand('<amatch>:p')
if path =~ '^/\(etc/udev/\%(rules\.d/\)\=.*\.rules\|lib/udev/\%(rules\.d/\)\=.*\.rules\)$'
setf udevrules
return
endif
if path =~ '^/etc/ufw/'
setf conf " Better than hog
return
endif
if path =~ '^/\(etc\|usr/share\)/polkit-1/rules\.d'
setf javascript
return
endif
try
let config_lines = readfile('/etc/udev/udev.conf')
catch /^Vim\%((\a\+)\)\=:E484/
setf hog
return
endtry
let dir = expand('<amatch>:p:h')
for line in config_lines
if line =~ s:ft_rules_udev_rules_pattern
let udev_rules = substitute(line, s:ft_rules_udev_rules_pattern, '\1', "")
if dir == udev_rules
setf udevrules
endif
break
endif
endfor
setf hog
endfunc
func dist#ft#SQL()
if exists("g:filetype_sql")
exe "setf " . g:filetype_sql
else
setf sql
endif
endfunc
" If the file has an extension of 't' and is in a directory 't' or 'xt' then
" it is almost certainly a Perl test file.
" If the first line starts with '#' and contains 'perl' it's probably a Perl
" file.
" (Slow test) If a file contains a 'use' statement then it is almost certainly
" a Perl file.
func dist#ft#FTperl()
let dirname = expand("%:p:h:t")
if expand("%:e") == 't' && (dirname == 't' || dirname == 'xt')
setf perl
return 1
endif
if getline(1)[0] == '#' && getline(1) =~ 'perl'
setf perl
return 1
endif
let save_cursor = getpos('.')
call cursor(1,1)
let has_use = search('^use\s\s*\k', 'c', 30)
call setpos('.', save_cursor)
if has_use
setf perl
return 1
endif
return 0
endfunc
" Choose context, plaintex, or tex (LaTeX) based on these rules:
" 1. Check the first line of the file for "%&<format>".
" 2. Check the first 1000 non-comment lines for LaTeX or ConTeXt keywords.
" 3. Default to "plain" or to g:tex_flavor, can be set in user's vimrc.
func dist#ft#FTtex()
let firstline = getline(1)
if firstline =~ '^%&\s*\a\+'
let format = tolower(matchstr(firstline, '\a\+'))
let format = substitute(format, 'pdf', '', '')
if format == 'tex'
let format = 'latex'
elseif format == 'plaintex'
let format = 'plain'
endif
elseif expand('%') =~ 'tex/context/.*/.*.tex'
let format = 'context'
else
" Default value, may be changed later:
let format = exists("g:tex_flavor") ? g:tex_flavor : 'plain'
" Save position, go to the top of the file, find first non-comment line.
let save_cursor = getpos('.')
call cursor(1,1)
let firstNC = search('^\s*[^[:space:]%]', 'c', 1000)
if firstNC " Check the next thousand lines for a LaTeX or ConTeXt keyword.
let lpat = 'documentclass\>\|usepackage\>\|begin{\|newcommand\>\|renewcommand\>\|part\>\|chapter\>\|section\>\|subsection\>\|subsubsection\>\|paragraph\>\|subparagraph\>\|subsubparagraph'
let cpat = 'start\a\+\|setup\a\+\|usemodule\|enablemode\|enableregime\|setvariables\|useencoding\|usesymbols\|stelle\a\+\|verwende\a\+\|stel\a\+\|gebruik\a\+\|usa\a\+\|imposta\a\+\|regle\a\+\|utilisemodule\>'
let kwline = search('^\s*\\\%(' . lpat . '\)\|^\s*\\\(' . cpat . '\)',
\ 'cnp', firstNC + 1000)
if kwline == 1 " lpat matched
let format = 'latex'
elseif kwline == 2 " cpat matched
let format = 'context'
endif " If neither matched, keep default set above.
" let lline = search('^\s*\\\%(' . lpat . '\)', 'cn', firstNC + 1000)
" let cline = search('^\s*\\\%(' . cpat . '\)', 'cn', firstNC + 1000)
" if cline > 0
" let format = 'context'
" endif
" if lline > 0 && (cline == 0 || cline > lline)
" let format = 'tex'
" endif
endif " firstNC
call setpos('.', save_cursor)
endif " firstline =~ '^%&\s*\a\+'
" Translation from formats to file types. TODO: add AMSTeX, RevTex, others?
if format == 'plain'
setf plaintex
elseif format == 'context'
setf context
else " probably LaTeX
setf tex
endif
return
endfunc
func dist#ft#FTxml()
let n = 1
while n < 100 && n < line("$")
let line = getline(n)
" DocBook 4 or DocBook 5.
let is_docbook4 = line =~ '<!DOCTYPE.*DocBook'
let is_docbook5 = line =~ ' xmlns="http://docbook.org/ns/docbook"'
if is_docbook4 || is_docbook5
let b:docbk_type = "xml"
if is_docbook5
let b:docbk_ver = 5
else
let b:docbk_ver = 4
endif
setf docbk
return
endif
if line =~ 'xmlns:xbl="http://www.mozilla.org/xbl"'
setf xbl
return
endif
let n += 1
endwhile
setf xml
endfunc
func dist#ft#FTy()
let n = 1
while n < 100 && n < line("$")
let line = getline(n)
if line =~ '^\s*%'
setf yacc
return
endif
if getline(n) =~ '^\s*\(#\|class\>\)' && getline(n) !~ '^\s*#\s*include'
setf racc
return
endif
let n = n + 1
endwhile
setf yacc
endfunc
func dist#ft#Redif()
let lnum = 1
while lnum <= 5 && lnum < line('$')
if getline(lnum) =~ "^\ctemplate-type:"
setf redif
return
endif
let lnum = lnum + 1
endwhile
endfunc
" Restore 'cpoptions'
let &cpo = s:cpo_save
unlet s:cpo_save
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