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
|
" Vim plugin for formatting XML
" Last Change: Thu, 07 Dec 2018
" Version: 0.1
" Author: Christian Brabandt <cb@256bit.org>
" Repository: https://github.com/chrisbra/vim-xml-ftplugin
" License: VIM License
" Documentation: see :h xmlformat.txt (TODO!)
" ---------------------------------------------------------------------
" Load Once: {{{1
if exists("g:loaded_xmlformat") || &cp
finish
endif
let g:loaded_xmlformat = 1
let s:keepcpo = &cpo
set cpo&vim
" Main function: Format the input {{{1
func! xmlformat#Format()
" only allow reformatting through the gq command
" (e.g. Vim is in normal mode)
if mode() != 'n'
" do not fall back to internal formatting
return 0
endif
let sw = shiftwidth()
let prev = prevnonblank(v:lnum-1)
let s:indent = indent(prev)/sw
let result = []
let lastitem = prev ? getline(prev) : ''
let is_xml_decl = 0
" split on `<`, but don't split on very first opening <
for item in split(join(getline(v:lnum, (v:lnum + v:count - 1))), '.\@<=[>]\zs')
if s:EndTag(item)
let s:indent = s:DecreaseIndent()
call add(result, s:Indent(item))
elseif s:EmptyTag(lastitem)
call add(result, s:Indent(item))
elseif s:StartTag(lastitem) && s:IsTag(item)
let s:indent += 1
call add(result, s:Indent(item))
else
if !s:IsTag(item)
" Simply split on '<'
let t=split(item, '.<\@=\zs')
let s:indent+=1
call add(result, s:Indent(t[0]))
let s:indent = s:DecreaseIndent()
call add(result, s:Indent(t[1]))
else
call add(result, s:Indent(item))
endif
endif
let lastitem = item
endfor
if !empty(result)
exe v:lnum. ",". (v:lnum + v:count - 1). 'd'
call append(v:lnum - 1, result)
" Might need to remove the last line, if it became empty because of the
" append() call
let last = v:lnum + len(result)
if getline(last) is ''
exe last. 'd'
endif
endif
" do not run internal formatter!
return 0
endfunc
" Check if given tag is XML Declaration header {{{1
func! s:IsXMLDecl(tag)
return a:tag =~? '^\s*<?xml\s\?\%(version="[^"]*"\)\?\s\?\%(encoding="[^"]*"\)\? ?>\s*$'
endfunc
" Return tag indented by current level {{{1
func! s:Indent(item)
return repeat(' ', shiftwidth()*s:indent). s:Trim(a:item)
endfu
" Return item trimmed from leading whitespace {{{1
func! s:Trim(item)
if exists('*trim')
return trim(a:item)
else
return matchstr(a:item, '\S\+.*')
endif
endfunc
" Check if tag is a new opening tag <tag> {{{1
func! s:StartTag(tag)
let is_comment = s:IsComment(a:tag)
return a:tag =~? '^\s*<[^/?]' && !is_comment
endfunc
func! s:IsComment(tag)
return a:tag =~? '<!--'
endfunc
" Remove one level of indentation {{{1
func! s:DecreaseIndent()
return (s:indent > 0 ? s:indent - 1 : 0)
endfunc
" Check if tag is a closing tag </tag> {{{1
func! s:EndTag(tag)
return a:tag =~? '^\s*</'
endfunc
" Check that the tag is actually a tag and not {{{1
" something like "foobar</foobar>"
func! s:IsTag(tag)
return s:Trim(a:tag)[0] == '<'
endfunc
" Check if tag is empty <tag/> {{{1
func! s:EmptyTag(tag)
return a:tag =~ '/>\s*$'
endfunc
" Restoration And Modelines: {{{1
let &cpo= s:keepcpo
unlet s:keepcpo
" Modeline {{{1
" vim: fdm=marker fdl=0 ts=2 et sw=0 sts=-1
|
