1" Vim settings file
2" Language:	Fortran90 (and Fortran95, Fortran77, F and elf90)
3" Version:	0.46
4" Last Change:	2010 July 24
5" Maintainer:	Ajit J. Thakkar <ajit@unb.ca>; <http://www.unb.ca/chem/ajit/>
6" Usage:	Do :help fortran-plugin from Vim
7" Credits:
8" Useful suggestions were made by Stefano Zacchiroli and Hendrik Merx.
9
10" Only do these settings when not done yet for this buffer
11if exists("b:did_ftplugin")
12  finish
13endif
14
15" Don't do other file type settings for this buffer
16let b:did_ftplugin = 1
17
18" Determine whether this is a fixed or free format source file
19" if this hasn't been done yet
20if !exists("b:fortran_fixed_source")
21  if exists("fortran_free_source")
22    " User guarantees free source form
23    let b:fortran_fixed_source = 0
24  elseif exists("fortran_fixed_source")
25    " User guarantees fixed source form
26    let b:fortran_fixed_source = 1
27  else
28    " f90 and f95 allow both fixed and free source form
29    " assume fixed source form unless signs of free source form
30    " are detected in the first five columns of the first s:lmax lines
31    " Detection becomes more accurate and time-consuming if more lines
32    " are checked. Increase the limit below if you keep lots of comments at
33    " the very top of each file and you have a fast computer
34    let s:lmax = 500
35    if ( s:lmax > line("$") )
36      let s:lmax = line("$")
37    endif
38    let b:fortran_fixed_source = 1
39    let s:ln=1
40    while s:ln <= s:lmax
41      let s:test = strpart(getline(s:ln),0,5)
42      if s:test !~ '^[Cc*]' && s:test !~ '^ *[!#]' && s:test =~ '[^ 0-9\t]' && s:test !~ '^[ 0-9]*\t'
43	let b:fortran_fixed_source = 0
44	break
45      endif
46      let s:ln = s:ln + 1
47    endwhile
48    unlet! s:lmax s:ln s:test
49  endif
50endif
51
52" Set comments and textwidth according to source type
53if (b:fortran_fixed_source == 1)
54  setlocal comments=:!,:*,:C
55  " Fixed format requires a textwidth of 72 for code
56  setlocal tw=72
57  " If you need to add "&" on continued lines so that the code is
58  " compatible with both free and fixed format, then you should do so
59  " in column 73 and uncomment the next line
60  " setlocal tw=73
61else
62  setlocal comments=:!
63  " Free format allows a textwidth of 132 for code but 80 is more usual
64  setlocal tw=80
65endif
66
67" Set commentstring for foldmethod=marker
68setlocal cms=!%s
69
70" Tabs are not a good idea in Fortran so the default is to expand tabs
71if !exists("fortran_have_tabs")
72  setlocal expandtab
73endif
74
75" Set 'formatoptions' to break comment and text lines but allow long lines
76setlocal fo+=tcql
77
78setlocal include=^\\c#\\=\\s*include\\s\\+
79setlocal suffixesadd+=.f95,.f90,.for,.f,.F,.f77,.ftn,.fpp
80
81let s:cposet=&cpoptions
82set cpoptions-=C
83
84" Define patterns for the matchit plugin
85if !exists("b:match_words")
86  let s:notend = '\%(\<end\s\+\)\@<!'
87  let s:notselect = '\%(\<select\s\+\)\@<!'
88  let s:notelse = '\%(\<end\s\+\|\<else\s\+\)\@<!'
89  let s:notprocedure = '\%(\s\+procedure\>\)\@!'
90  let b:match_ignorecase = 1
91  let b:match_words =
92    \ '\<select\s*case\>:' . s:notselect. '\<case\>:\<end\s*select\>,' .
93    \ s:notelse . '\<if\s*(.\+)\s*then\>:' .
94    \ '\<else\s*\%(if\s*(.\+)\s*then\)\=\>:\<end\s*if\>,'.
95    \ 'do\s\+\(\d\+\):\%(^\s*\)\@<=\1\s,'.
96    \ s:notend . '\<do\>:\<end\s*do\>,'.
97    \ s:notelse . '\<where\>:\<elsewhere\>:\<end\s*where\>,'.
98    \ s:notend . '\<type\s*[^(]:\<end\s*type\>,'.
99    \ s:notend . '\<interface\>:\<end\s*interface\>,'.
100    \ s:notend . '\<subroutine\>:\<end\s*subroutine\>,'.
101    \ s:notend . '\<function\>:\<end\s*function\>,'.
102    \ s:notend . '\<module\>' . s:notprocedure . ':\<end\s*module\>,'.
103    \ s:notend . '\<program\>:\<end\s*program\>'
104endif
105
106" File filters for :browse e
107if has("gui_win32") && !exists("b:browsefilter")
108  let b:browsefilter = "Fortran Files (*.f;*.F;*.for;*.f77;*.f90;*.f95;*.fpp;*.ftn)\t*.f;*.F;*.for;*.f77;*.f90;*.f95;*.fpp;*.ftn\n" .
109    \ "All Files (*.*)\t*.*\n"
110endif
111
112let b:undo_ftplugin = "setl fo< com< tw< cms< et< inc<"
113	\ . "| unlet! b:match_ignorecase b:match_words b:browsefilter"
114
115let &cpoptions=s:cposet
116unlet s:cposet
117
118" vim:sw=2
119