summaryrefslogtreecommitdiff
path: root/runtime/syntax/xpm2.vim
blob: 3a3de6f5446bf10f971fcfb15031e3fbd2202bc0 (plain)
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
151
152
153
154
155
156
" Vim syntax file
" Language:	X Pixmap v2
" Maintainer:	Steve Wall (hitched97@velnet.com)
" Last Change:	2001 Apr 25
" Version:	5.8
"
" Made from xpm.vim by Ronald Schild <rs@scutum.de>

" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
  syntax clear
elseif exists("b:current_syntax")
  finish
endif

syn region  xpm2PixelString	start="^"  end="$"  contains=@xpm2Colors
syn keyword xpm2Todo		TODO FIXME XXX  contained
syn match   xpm2Comment		"\!.*$"  contains=xpm2Todo


if version < 508
  command -nargs=+ HiLink hi link <args>
  command -nargs=+ Hi hi <args>
else
  command -nargs=+ HiLink hi def link <args>
  command -nargs=+ Hi hi def <args>
endif

if has("gui_running")

  let color  = ""
  let chars  = ""
  let colors = 0
  let cpp    = 0
  let n      = 0
  let i      = 1

  while i <= line("$")		" scanning all lines

    let s = getline(i)
    if match(s,"\!.*$") != -1
      let s = matchstr(s, "^[^\!]*")
    endif
    if s != ""			" does line contain a string?

      if n == 0			" first string is the Values string

	" get the 3rd value: colors = number of colors
	let colors = substitute(s, '\s*\d\+\s\+\d\+\s\+\(\d\+\).*', '\1', '')
	" get the 4th value: cpp = number of character per pixel
	let cpp = substitute(s, '\s*\d\+\s\+\d\+\s\+\d\+\s\+\(\d\+\).*', '\1', '')

	" highlight the Values string as normal string (no pixel string)
	exe 'syn match xpm2Values /'.s.'/'
	HiLink xpm2Values Statement

	let n = 1			" n = color index

      elseif n <= colors		" string is a color specification

	" get chars = <cpp> length string representing the pixels
	" (first incl. the following whitespace)
	let chars = substitute(s, '\(.\{'.cpp.'}\s\+\).*', '\1', '')

	" now get color, first try 'c' key if any (color visual)
	let color = substitute(s, '.*\sc\s\+\(.\{-}\)\s*\(\(g4\=\|[ms]\)\s.*\)*\s*', '\1', '')
	if color == s
	  " no 'c' key, try 'g' key (grayscale with more than 4 levels)
	  let color = substitute(s, '.*\sg\s\+\(.\{-}\)\s*\(\(g4\|[ms]\)\s.*\)*\s*', '\1', '')
	  if color == s
	    " next try: 'g4' key (4-level grayscale)
	    let color = substitute(s, '.*\sg4\s\+\(.\{-}\)\s*\([ms]\s.*\)*\s*', '\1', '')
	    if color == s
	      " finally try 'm' key (mono visual)
	      let color = substitute(s, '.*\sm\s\+\(.\{-}\)\s*\(s\s.*\)*\s*', '\1', '')
	      if color == s
		let color = ""
	      endif
	    endif
	  endif
	endif

	" Vim cannot handle RGB codes with more than 6 hex digits
	if color =~ '#\x\{10,}$'
	  let color = substitute(color, '\(\x\x\)\x\x', '\1', 'g')
	elseif color =~ '#\x\{7,}$'
	  let color = substitute(color, '\(\x\x\)\x', '\1', 'g')
	" nor with 3 digits
	elseif color =~ '#\x\{3}$'
	  let color = substitute(color, '\(\x\)\(\x\)\(\x\)', '0\10\20\3', '')
	endif

	" escape meta characters in patterns
	let s = escape(s, '/\*^$.~[]')
	let chars = escape(chars, '/\*^$.~[]')

	" change whitespace to "\s\+"
	let s = substitute(s, "[ \t][ \t]*", "\\\\s\\\\+", "g")
	let chars = substitute(chars, "[ \t][ \t]*", "\\\\s\\\\+", "g")

	" now create syntax items
	" highlight the color string as normal string (no pixel string)
	exe 'syn match xpm2Col'.n.'Def /'.s.'/ contains=xpm2Col'.n.'inDef'
	exe 'HiLink xpm2Col'.n.'Def Constant'

	" but highlight the first whitespace after chars in its color
	exe 'syn match xpm2Col'.n.'inDef /^'.chars.'/hs=s+'.(cpp).' contained'
	exe 'HiLink xpm2Col'.n.'inDef xpm2Color'.n

	" remove the following whitespace from chars
	let chars = substitute(chars, '\\s\\+$', '', '')

	" and create the syntax item contained in the pixel strings
	exe 'syn match xpm2Color'.n.' /'.chars.'/ contained'
	exe 'syn cluster xpm2Colors add=xpm2Color'.n

	" if no color or color = "None" show background
	if color == ""  ||  substitute(color, '.*', '\L&', '') == 'none'
	  exe 'Hi xpm2Color'.n.' guifg=bg guibg=NONE'
	else
	  exe 'Hi xpm2Color'.n." guifg='".color."' guibg='".color."'"
	endif
	let n = n + 1
      else
	break			" no more color string
      endif
    endif
    let i = i + 1
  endwhile

  unlet color chars colors cpp n i s

endif		" has("gui_running")

" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_xpm2_syntax_inits")
  if version < 508
    let did_xpm2_syntax_inits = 1
  endif

  " The default highlighting.
  HiLink xpm2Type		Type
  HiLink xpm2StorageClass	StorageClass
  HiLink xpm2Todo		Todo
  HiLink xpm2Comment		Comment
  HiLink xpm2PixelString	String
endif
delcommand HiLink
delcommand Hi

let b:current_syntax = "xpm2"

" vim: ts=8:sw=2:noet: