summaryrefslogtreecommitdiffstats
path: root/autoload/vimtex/include.vim
blob: 59c379777900d1caa85627f4ec712d23da07c3b2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'latex') == -1

" vimtex - LaTeX plugin for Vim
"
" Maintainer: Karl Yngve Lervåg
" Email:      karl.yngve@gmail.com
"

function! vimtex#include#expr() abort " {{{1
  call s:visited.timeout()
  let l:fname = substitute(v:fname, '^\s*\|\s*$', '', 'g')

  "
  " Check if v:fname matches exactly
  "
  if filereadable(l:fname)
    return s:visited.check(l:fname)
  endif

  "
  " Parse \include or \input style lines
  "
  let l:file = s:input(l:fname, 'tex')
  for l:candidate in [l:file, l:file . '.tex']
    if filereadable(l:candidate)
      return s:visited.check(l:candidate)
    endif
  endfor

  "
  " Parse \bibliography or \addbibresource
  "
  let l:candidate = s:input(l:fname, 'bib')
  if filereadable(l:candidate)
    return s:visited.check(l:candidate)
  endif

  "
  " Check if v:fname matches in $TEXINPUTS
  "
  let l:candidate = s:search_candidates_texinputs(l:fname)
  if !empty(l:candidate)
    return s:visited.check(l:candidate)
  endif

  "
  " Search for file with kpsewhich
  "
  if g:vimtex_include_search_enabled
    let l:candidate = s:search_candidates_kpsewhich(l:fname)
    if !empty(l:candidate)
      return s:visited.check(l:candidate)
    endif
  endif

  return s:visited.check(l:fname)
endfunction

" }}}1

function! s:input(fname, type) abort " {{{1
  let [l:lnum, l:cnum] = searchpos(g:vimtex#re#{a:type}_input, 'bcn', line('.'))
  if l:lnum == 0 | return a:fname | endif

  let l:cmd = vimtex#cmd#get_at(l:lnum, l:cnum)
  if empty(l:cmd) | return a:fname | endif

  let l:file = join(map(
        \   get(l:cmd, 'args', [{}]),
        \   "get(v:val, 'text', '')"),
        \ '')
  let l:file = substitute(l:file, '^\s*"\|"\s*$', '', 'g')
  let l:file = substitute(l:file, '\\space', '', 'g')

  if l:file[-3:] !=# a:type
    let l:file .= '.' . a:type
  endif

  return l:file
endfunction

" }}}1
function! s:search_candidates_texinputs(fname) abort " {{{1
  for l:suffix in [''] + split(&l:suffixesadd, ',')
    let l:candidates = glob(b:vimtex.root . '/**/'
          \ . fnameescape(a:fname) . l:suffix, 0, 1)
    if !empty(l:candidates)
      return l:candidates[0]
    endif
  endfor

  return ''
endfunction

" }}}1
function! s:search_candidates_kpsewhich(fname) abort " {{{1
  " Split input list on commas, and if applicable, ensure that the entry that
  " the cursor is on is placed first in the queue
  let l:files = split(a:fname, '\s*,\s*')
  let l:current = expand('<cword>')
  let l:index = index(l:files, l:current)
  if l:index >= 0
    call remove(l:files, l:index)
    let l:files = [l:current] + l:files
  endif

  " Add file extensions to create the final list of candidate files
  let l:candidates = []
  for l:file in l:files
    if !empty(fnamemodify(l:file, ':e'))
      call add(l:candidates, l:file)
    else
      call extend(l:candidates, map(split(&l:suffixesadd, ','), 'l:file . v:val'))
    endif
  endfor

  for l:file in l:candidates
    let l:candidate = vimtex#kpsewhich#find(l:file)
    if !empty(l:candidate) && filereadable(l:candidate) | return l:candidate | endif
  endfor

  return ''
endfunction

" }}}1

let s:visited = {
      \ 'time' : 0,
      \ 'list' : [],
      \}
function! s:visited.timeout() abort dict " {{{1
  if localtime() - self.time > 1
    let self.time = localtime()
    let self.list = [expand('%:p')]
  endif
endfunction

" }}}1
function! s:visited.check(fname) abort dict " {{{1
  if index(self.list, fnamemodify(a:fname, ':p')) < 0
    call add(self.list, fnamemodify(a:fname, ':p'))
    return a:fname
  endif

  return ''
endfunction

" }}}1

endif