" Vim support file to detect file types in scripts
"
" Maintainer: Bram Moolenaar <[email protected]>
" Last change: 2013 May 24

" This file is called by an autocommand for every file that has just been
" loaded into a buffer. It checks if the type of file can be recognized by
" the file contents. The autocommand is in $VIMRUNTIME/filetype.vim.


" Only do the rest when the FileType autocommand has not been triggered yet.
if did_filetype()
finish
endif

" Load the user defined scripts file first
" Only do this when the FileType autocommand has not been triggered yet
if exists("myscriptsfile") && filereadable(expand(myscriptsfile))
execute "source " . myscriptsfile
if did_filetype()
finish
endif
endif

" Line continuation is used here, remove 'C' from 'cpoptions'
let s:cpo_save = &cpo
set cpo&vim

let s:line1 = getline(1)

if s:line1 =~ "^#!"
" A script that starts with "#!".

" Check for a line like "#!/usr/bin/env VAR=val bash". Turn it into
" "#!/usr/bin/bash" to make matching easier.
if s:line1 =~ '^#!\s*\S*\<env\s'
let s:line1 = substitute(s:line1, '\S\+=\S\+', '', 'g')
let s:line1 = substitute(s:line1, '\<env\s\+', '', '')
endif

" Get the program name.
" Only accept spaces in PC style paths: "#!c:/program files/perl [args]".
" If the word env is used, use the first word after the space:
" "#!/usr/bin/env perl [path/args]"
" If there is no path use the first word: "#!perl [path/args]".
" Otherwise get the last word after a slash: "#!/usr/bin/perl [path/args]".
if s:line1 =~ '^#!\s*\a:[/\\]'
let s:name = substitute(s:line1, '^#!.*[/\\]\(\i\+\).*', '\1', '')
elseif s:line1 =~ '^#!.*\<env\>'
let s:name = substitute(s:line1, '^#!.*\<env\>\s\+\(\i\+\).*', '\1', '')
elseif s:line1 =~ '^#!\s*[^/\\ ]*\>\([^/\\]\|$\)'
let s:name = substitute(s:line1, '^#!\s*\([^/\\ ]*\>\).*', '\1', '')
else
let s:name = substitute(s:line1, '^#!\s*\S*[/\\]\(\i\+\).*', '\1', '')
endif

" tcl scripts may have #!/bin/sh in the first line and "exec wish" in the
" third line. Suggested by Steven Atkinson.
if getline(3) =~ '^exec wish'
let s:name = 'wish'
endif

" Bourne-like shell scripts: bash bash2 ksh ksh93 sh
if s:name =~ '^\(bash\d*\|\|ksh\d*\|sh\)\>'
call SetFileTypeSH(s:line1) " defined in filetype.vim

" csh scripts
elseif s:name =~ '^csh\>'
if exists("g:filetype_csh")
call SetFileTypeShell(g:filetype_csh)
else
call SetFileTypeShell("csh")
endif

" tcsh scripts
elseif s:name =~ '^tcsh\>'
call SetFileTypeShell("tcsh")

" Z shell scripts
elseif s:name =~ '^zsh\>'
set ft=zsh

" TCL scripts
elseif s:name =~ '^\(tclsh\|wish\|expectk\|itclsh\|itkwish\)\>'
set ft=tcl

" Expect scripts
elseif s:name =~ '^expect\>'
set ft=expect

" Gnuplot scripts
elseif s:name =~ '^gnuplot\>'
set ft=gnuplot

" Makefiles
elseif s:name =~ 'make\>'
set ft=make

" Lua
elseif s:name =~ 'lua'
set ft=lua

" Perl 6
elseif s:name =~ 'perl6'
set ft=perl6

" Perl
elseif s:name =~ 'perl'
set ft=perl

" PHP
elseif s:name =~ 'php'
set ft=php

" Python
elseif s:name =~ 'python'
set ft=python

" Groovy
elseif s:name =~ '^groovy\>'
set ft=groovy

" Ruby
elseif s:name =~ 'ruby'
set ft=ruby

" BC calculator
elseif s:name =~ '^bc\>'
set ft=bc

" sed
elseif s:name =~ 'sed\>'
set ft=sed

" OCaml-scripts
elseif s:name =~ 'ocaml'
set ft=ocaml

" Awk scripts
elseif s:name =~ 'awk\>'
set ft=awk

" Website MetaLanguage
elseif s:name =~ 'wml'
set ft=wml

" Scheme scripts
elseif s:name =~ 'scheme'
set ft=scheme

" CFEngine scripts
elseif s:name =~ 'cfengine'
set ft=cfengine

" Erlang scripts
elseif s:name =~ 'escript'
set ft=erlang

endif
unlet s:name

else
" File does not start with "#!".

let s:line2 = getline(2)
let s:line3 = getline(3)
let s:line4 = getline(4)
let s:line5 = getline(5)

" Bourne-like shell scripts: sh ksh bash bash2
if s:line1 =~ '^:$'
call SetFileTypeSH(s:line1) " defined in filetype.vim

" Z shell scripts
elseif s:line1 =~ '^#compdef\>' || s:line1 =~ '^#autoload\>' ||
\ "\n".s:line1."\n".s:line2."\n".s:line3."\n".s:line4."\n".s:line5 =~ '\n\s*emulate\s\+\%(-[LR]\s\+\)\=[ckz]\=sh\>'
set ft=zsh

" ELM Mail files
elseif s:line1 =~ '^From \([a-zA-Z][a-zA-Z_0-9\.=-]*\(@[^ ]*\)\=\|-\) .* \(19\|20\)\d\d$'
set ft=mail

" Mason
elseif s:line1 =~ '^<[%&].*>'
set ft=mason

" Vim scripts (must have '" vim' as the first line to trigger this)
elseif s:line1 =~ '^" *[vV]im$'
set ft=vim

" MOO
elseif s:line1 =~ '^\*\* LambdaMOO Database, Format Version \%([1-3]\>\)\@!\d\+ \*\*$'
set ft=moo

" Diff file:
" - "diff" in first line (context diff)
" - "Only in " in first line
" - "--- " in first line and "+++ " in second line (unified diff).
" - "*** " in first line and "--- " in second line (context diff).
" - "# It was generated by makepatch " in the second line (makepatch diff).
" - "Index: <filename>" in the first line (CVS file)
" - "=== ", line of "=", "---", "+++ " (SVK diff)
" - "=== ", "--- ", "+++ " (bzr diff, common case)
" - "=== (removed|added|renamed|modified)" (bzr diff, alternative)
" - "# HG changeset patch" in first line (Mercurial export format)
elseif s:line1 =~ '^\(diff\>\|Only in \|\d\+\(,\d\+\)\=[cda]\d\+\>\|# It was generated by makepatch \|Index:\s\+\f\+\r\=$\|===== \f\+ \d\+\.\d\+ vs edited\|==== //\f\+#\d\+\|# HG changeset patch\)'
\ || (s:line1 =~ '^--- ' && s:line2 =~ '^+++ ')
\ || (s:line1 =~ '^\* looking for ' && s:line2 =~ '^\* comparing to ')
\ || (s:line1 =~ '^\*\*\* ' && s:line2 =~ '^--- ')
\ || (s:line1 =~ '^=== ' && ((s:line2 =~ '^=\{66\}' && s:line3 =~ '^--- ' && s:line4 =~ '^+++') || (s:line2 =~ '^--- ' && s:line3 =~ '^+++ ')))
\ || (s:line1 =~ '^=== \(removed\|added\|renamed\|modified\)')
set ft=diff

" PostScript Files (must have %!PS as the first line, like a2ps output)
elseif s:line1 =~ '^%![ \t]*PS'
set ft=postscr

" M4 scripts: Guess there is a line that starts with "dnl".
elseif s:line1 =~ '^\s*dnl\>'
\ || s:line2 =~ '^\s*dnl\>'
\ || s:line3 =~ '^\s*dnl\>'
\ || s:line4 =~ '^\s*dnl\>'
\ || s:line5 =~ '^\s*dnl\>'
set ft=m4

" AmigaDos scripts
elseif $TERM == "amiga"
\ && (s:line1 =~ "^;" || s:line1 =~ '^\.[bB][rR][aA]')
set ft=amiga

" SiCAD scripts (must have procn or procd as the first line to trigger this)
elseif s:line1 =~? '^ *proc[nd] *$'
set ft=sicad

" Purify log files start with "**** Purify"
elseif s:line1 =~ '^\*\*\*\* Purify'
set ft=purifylog

" XML
elseif s:line1 =~ '<?\s*xml.*?>'
set ft=xml

" XHTML (e.g.: PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN")
elseif s:line1 =~ '\<DTD\s\+XHTML\s'
set ft=xhtml

" HTML (e.g.: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN")
elseif s:line1 =~? '\<DOCTYPE\s\+html\>'
set ft=html

" PDF
elseif s:line1 =~ '^%PDF-'
set ft=pdf

" XXD output
elseif s:line1 =~ '^\x\{7}: \x\{2} \=\x\{2} \=\x\{2} \=\x\{2} '
set ft=xxd

" RCS/CVS log output
elseif s:line1 =~ '^RCS file:' || s:line2 =~ '^RCS file:'
set ft=rcslog

" CVS commit
elseif s:line2 =~ '^CVS:' || getline("$") =~ '^CVS: '
set ft=cvs

" Prescribe
elseif s:line1 =~ '^!R!'
set ft=prescribe

" Send-pr
elseif s:line1 =~ '^SEND-PR:'
set ft=sendpr

" SNNS files
elseif s:line1 =~ '^SNNS network definition file'
set ft=snnsnet
elseif s:line1 =~ '^SNNS pattern definition file'
set ft=snnspat
elseif s:line1 =~ '^SNNS result file'
set ft=snnsres

" Virata
elseif s:line1 =~ '^%.\{-}[Vv]irata'
\ || s:line2 =~ '^%.\{-}[Vv]irata'
\ || s:line3 =~ '^%.\{-}[Vv]irata'
\ || s:line4 =~ '^%.\{-}[Vv]irata'
\ || s:line5 =~ '^%.\{-}[Vv]irata'
set ft=virata

" Strace
elseif s:line1 =~ '^\(\[pid \d\+\] \)\=[0-9:.]* *execve(' || s:line1 =~ '^__libc_start_main'
set ft=strace

" VSE JCL
elseif s:line1 =~ '^\* $$ JOB\>' || s:line1 =~ '^// *JOB\>'
set ft=vsejcl

" TAK and SINDA
elseif s:line4 =~ 'K & K Associates' || s:line2 =~ 'TAK 2000'
set ft=takout
elseif s:line3 =~ 'S Y S T E M S I M P R O V E D '
set ft=sindaout
elseif getline(6) =~ 'Run Date: '
set ft=takcmp
elseif getline(9) =~ 'Node File 1'
set ft=sindacmp

" DNS zone files
elseif s:line1.s:line2.s:line3.s:line4 =~ '^; <<>> DiG [0-9.]\+ <<>>\|BIND.*named\|$ORIGIN\|$TTL\|IN\s\+SOA'
set ft=bindzone

" BAAN
elseif s:line1 =~ '|\*\{1,80}' && s:line2 =~ 'VRC '
\ || s:line2 =~ '|\*\{1,80}' && s:line3 =~ 'VRC '
set ft=baan

" Valgrind
elseif s:line1 =~ '^==\d\+== valgrind' || s:line3 =~ '^==\d\+== Using valgrind'
set ft=valgrind

" Renderman Interface Bytestream
elseif s:line1 =~ '^##RenderMan'
set ft=rib

" Scheme scripts
elseif s:line1 =~ 'exec\s\+\S*scheme' || s:line2 =~ 'exec\s\+\S*scheme'
set ft=scheme

" rst files
elseif s:line1 =~ '^\.\.\s\|^\s*restindex\s*$'
\ || s:line2 =~ '^\.\.\s\|^\s*restindex\s*$'
\ || s:line3 =~ '^\.\.\s\|^\s*restindex\s*$'
\ || s:line4 =~ '^\.\.\s\|^\s*restindex\s*$'
\ || s:line5 =~ '^\.\.\s\|^\s*restindex\s*$'
set ft=rst

" Git output
elseif s:line1 =~ '^\(commit\|tree\|object\) \x\{40\}\>\|^tag \S\+$'
set ft=git

" Gprof (gnu profiler)
elseif s:line1 == 'Flat profile:'
\ && s:line2 == ''
\ && s:line3 =~ '^Each sample counts as .* seconds.$'
set ft=gprof

" Erlang terms
" (See also: http://www.gnu.org/software/emacs/manual/html_node/emacs/Choosing-Modes.html#Choosing-Modes)
elseif s:line1 =~? '-\*-.*erlang.*-\*-'
set ft=erlang

" CVS diff
else
let s:lnum = 1
while getline(s:lnum) =~ "^? " && s:lnum < line("$")
let s:lnum += 1
endwhile
if getline(s:lnum) =~ '^Index:\s\+\f\+$'
set ft=diff

" locale input files: Formal Definitions of Cultural Conventions
" filename must be like en_US, fr_FR@euro or en_US.UTF-8
elseif expand("%") =~ '\a\a_\a\a\($\|[.@]\)\|i18n$\|POSIX$\|translit_'
let s:lnum = 1
while s:lnum < 100 && s:lnum < line("$")
if getline(s:lnum) =~ '^LC_\(IDENTIFICATION\|CTYPE\|COLLATE\|MONETARY\|NUMERIC\|TIME\|MESSAGES\|PAPER\|TELEPHONE\|MEASUREMENT\|NAME\|ADDRESS\)$'
setf fdcc
break
endif
let s:lnum += 1
endwhile
endif
unlet s:lnum

endif

unlet s:line2 s:line3 s:line4 s:line5

endif

" Restore 'cpoptions'
let &cpo = s:cpo_save

unlet s:cpo_save s:line1