13912
|
1 " Vim plugin for formatting XML
|
18456
|
2 " Last Change: 2019 Oct 24
|
|
3 " Version: 0.2
|
15131
|
4 " Author: Christian Brabandt <cb@256bit.org>
|
|
5 " Repository: https://github.com/chrisbra/vim-xml-ftplugin
|
|
6 " License: VIM License
|
13912
|
7 " Documentation: see :h xmlformat.txt (TODO!)
|
|
8 " ---------------------------------------------------------------------
|
|
9 " Load Once: {{{1
|
|
10 if exists("g:loaded_xmlformat") || &cp
|
|
11 finish
|
|
12 endif
|
|
13 let g:loaded_xmlformat = 1
|
|
14 let s:keepcpo = &cpo
|
|
15 set cpo&vim
|
|
16
|
|
17 " Main function: Format the input {{{1
|
|
18 func! xmlformat#Format()
|
|
19 " only allow reformatting through the gq command
|
|
20 " (e.g. Vim is in normal mode)
|
|
21 if mode() != 'n'
|
|
22 " do not fall back to internal formatting
|
|
23 return 0
|
|
24 endif
|
18456
|
25 let count_orig = v:count
|
13912
|
26 let sw = shiftwidth()
|
|
27 let prev = prevnonblank(v:lnum-1)
|
|
28 let s:indent = indent(prev)/sw
|
|
29 let result = []
|
|
30 let lastitem = prev ? getline(prev) : ''
|
|
31 let is_xml_decl = 0
|
18456
|
32 " go through every line, but don't join all content together and join it
|
|
33 " back. We might lose empty lines
|
|
34 let list = getline(v:lnum, (v:lnum + count_orig - 1))
|
|
35 let current = 0
|
|
36 for line in list
|
|
37 " Keep empty input lines?
|
|
38 if empty(line)
|
|
39 call add(result, '')
|
|
40 continue
|
|
41 elseif line !~# '<[/]\?[^>]*>'
|
|
42 let nextmatch = match(list, '<[/]\?[^>]*>', current)
|
|
43 let line .= join(list[(current + 1):(nextmatch-1)], "\n")
|
|
44 call remove(list, current+1, nextmatch-1)
|
|
45 endif
|
|
46 " split on `>`, but don't split on very first opening <
|
|
47 " this means, items can be like ['<tag>', 'tag content</tag>']
|
|
48 for item in split(line, '.\@<=[>]\zs')
|
|
49 if s:EndTag(item)
|
|
50 let s:indent = s:DecreaseIndent()
|
|
51 call add(result, s:Indent(item))
|
|
52 elseif s:EmptyTag(lastitem)
|
|
53 call add(result, s:Indent(item))
|
|
54 elseif s:StartTag(lastitem) && s:IsTag(item)
|
|
55 let s:indent += 1
|
13912
|
56 call add(result, s:Indent(item))
|
18456
|
57 else
|
|
58 if !s:IsTag(item)
|
|
59 " Simply split on '<', if there is one,
|
|
60 " but reformat according to &textwidth
|
|
61 let t=split(item, '.<\@=\zs')
|
|
62 " t should only contain 2 items, but just be safe here
|
|
63 if s:IsTag(lastitem)
|
|
64 let s:indent+=1
|
|
65 endif
|
|
66 let result+=s:FormatContent([t[0]])
|
|
67 if s:EndTag(t[1])
|
|
68 let s:indent = s:DecreaseIndent()
|
|
69 endif
|
|
70 "for y in t[1:]
|
|
71 let result+=s:FormatContent(t[1:])
|
|
72 "endfor
|
|
73 else
|
|
74 call add(result, s:Indent(item))
|
|
75 endif
|
13912
|
76 endif
|
18456
|
77 let lastitem = item
|
|
78 endfor
|
|
79 let current += 1
|
|
80 endfor
|
13912
|
81
|
18456
|
82 if !empty(result)
|
|
83 let lastprevline = getline(v:lnum + count_orig)
|
|
84 let delete_lastline = v:lnum + count_orig - 1 == line('$')
|
|
85 exe v:lnum. ",". (v:lnum + count_orig - 1). 'd'
|
13912
|
86 call append(v:lnum - 1, result)
|
|
87 " Might need to remove the last line, if it became empty because of the
|
|
88 " append() call
|
|
89 let last = v:lnum + len(result)
|
18456
|
90 " do not use empty(), it returns true for `empty(0)`
|
|
91 if getline(last) is '' && lastprevline is '' && delete_lastline
|
13912
|
92 exe last. 'd'
|
|
93 endif
|
|
94 endif
|
|
95
|
|
96 " do not run internal formatter!
|
|
97 return 0
|
|
98 endfunc
|
|
99 " Check if given tag is XML Declaration header {{{1
|
|
100 func! s:IsXMLDecl(tag)
|
|
101 return a:tag =~? '^\s*<?xml\s\?\%(version="[^"]*"\)\?\s\?\%(encoding="[^"]*"\)\? ?>\s*$'
|
|
102 endfunc
|
|
103 " Return tag indented by current level {{{1
|
|
104 func! s:Indent(item)
|
|
105 return repeat(' ', shiftwidth()*s:indent). s:Trim(a:item)
|
|
106 endfu
|
|
107 " Return item trimmed from leading whitespace {{{1
|
|
108 func! s:Trim(item)
|
|
109 if exists('*trim')
|
|
110 return trim(a:item)
|
|
111 else
|
|
112 return matchstr(a:item, '\S\+.*')
|
|
113 endif
|
|
114 endfunc
|
|
115 " Check if tag is a new opening tag <tag> {{{1
|
|
116 func! s:StartTag(tag)
|
15131
|
117 let is_comment = s:IsComment(a:tag)
|
|
118 return a:tag =~? '^\s*<[^/?]' && !is_comment
|
|
119 endfunc
|
18456
|
120 " Check if tag is a Comment start {{{1
|
15131
|
121 func! s:IsComment(tag)
|
|
122 return a:tag =~? '<!--'
|
13912
|
123 endfunc
|
|
124 " Remove one level of indentation {{{1
|
|
125 func! s:DecreaseIndent()
|
|
126 return (s:indent > 0 ? s:indent - 1 : 0)
|
|
127 endfunc
|
|
128 " Check if tag is a closing tag </tag> {{{1
|
|
129 func! s:EndTag(tag)
|
|
130 return a:tag =~? '^\s*</'
|
|
131 endfunc
|
|
132 " Check that the tag is actually a tag and not {{{1
|
|
133 " something like "foobar</foobar>"
|
|
134 func! s:IsTag(tag)
|
|
135 return s:Trim(a:tag)[0] == '<'
|
|
136 endfunc
|
|
137 " Check if tag is empty <tag/> {{{1
|
|
138 func! s:EmptyTag(tag)
|
|
139 return a:tag =~ '/>\s*$'
|
|
140 endfunc
|
18456
|
141 " Format input line according to textwidth {{{1
|
|
142 func! s:FormatContent(list)
|
|
143 let result=[]
|
|
144 let limit = 80
|
|
145 if &textwidth > 0
|
|
146 let limit = &textwidth
|
|
147 endif
|
|
148 let column=0
|
|
149 let idx = -1
|
|
150 let add_indent = 0
|
|
151 let cnt = 0
|
|
152 for item in a:list
|
|
153 for word in split(item, '\s\+\S\+\zs')
|
|
154 let column += strdisplaywidth(word, column)
|
|
155 if match(word, "^\\s*\n\\+\\s*$") > -1
|
|
156 call add(result, '')
|
|
157 let idx += 1
|
|
158 let column = 0
|
|
159 let add_indent = 1
|
|
160 elseif column > limit || cnt == 0
|
|
161 let add = s:Indent(s:Trim(word))
|
|
162 call add(result, add)
|
|
163 let column = strdisplaywidth(add)
|
|
164 let idx += 1
|
|
165 else
|
|
166 if add_indent
|
|
167 let result[idx] = s:Indent(s:Trim(word))
|
|
168 else
|
|
169 let result[idx] .= ' '. s:Trim(word)
|
|
170 endif
|
|
171 let add_indent = 0
|
|
172 endif
|
|
173 let cnt += 1
|
|
174 endfor
|
|
175 endfor
|
|
176 return result
|
|
177 endfunc
|
13912
|
178 " Restoration And Modelines: {{{1
|
|
179 let &cpo= s:keepcpo
|
|
180 unlet s:keepcpo
|
|
181 " Modeline {{{1
|
|
182 " vim: fdm=marker fdl=0 ts=2 et sw=0 sts=-1
|