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https://github.com/neovim/neovim.git
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142 lines
4.4 KiB
VimL
142 lines
4.4 KiB
VimL
" Vim syntax file
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" Language: X Pixmap
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" Maintainer: Ronald Schild <rs@scutum.de>
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" Last Change: 2021 Oct 04
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" Version: 5.4n.1
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" Jemma Nelson added termguicolors support
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" Dominique Pellé fixed spelling support
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" quit when a syntax file was already loaded
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if exists("b:current_syntax")
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finish
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endif
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syn spell notoplevel
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syn keyword xpmType char
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syn keyword xpmStorageClass static
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syn keyword xpmTodo TODO FIXME XXX contained
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syn region xpmComment start="/\*" end="\*/" contains=xpmTodo,@Spell
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syn region xpmPixelString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=@xpmColors
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if has("gui_running") || has("termguicolors") && &termguicolors
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let color = ""
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let chars = ""
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let colors = 0
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let cpp = 0
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let n = 0
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let i = 1
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while i <= line("$") " scanning all lines
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let s = matchstr(getline(i), '".\{-1,}"')
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if s != "" " does line contain a string?
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if n == 0 " first string is the Values string
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" get the 3rd value: colors = number of colors
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let colors = substitute(s, '"\s*\d\+\s\+\d\+\s\+\(\d\+\).*"', '\1', '')
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" get the 4th value: cpp = number of character per pixel
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let cpp = substitute(s, '"\s*\d\+\s\+\d\+\s\+\d\+\s\+\(\d\+\).*"', '\1', '')
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if cpp =~ '[^0-9]'
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break " if cpp is not made of digits there must be something wrong
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endif
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" Highlight the Values string as normal string (no pixel string).
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" Only when there is no slash, it would terminate the pattern.
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if s !~ '/'
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exe 'syn match xpmValues /' . s . '/'
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endif
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hi link xpmValues String
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let n = 1 " n = color index
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elseif n <= colors " string is a color specification
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" get chars = <cpp> length string representing the pixels
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" (first incl. the following whitespace)
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let chars = substitute(s, '"\(.\{'.cpp.'}\s\).*"', '\1', '')
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" now get color, first try 'c' key if any (color visual)
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let color = substitute(s, '".*\sc\s\+\(.\{-}\)\s*\(\(g4\=\|[ms]\)\s.*\)*\s*"', '\1', '')
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if color == s
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" no 'c' key, try 'g' key (grayscale with more than 4 levels)
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let color = substitute(s, '".*\sg\s\+\(.\{-}\)\s*\(\(g4\|[ms]\)\s.*\)*\s*"', '\1', '')
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if color == s
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" next try: 'g4' key (4-level grayscale)
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let color = substitute(s, '".*\sg4\s\+\(.\{-}\)\s*\([ms]\s.*\)*\s*"', '\1', '')
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if color == s
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" finally try 'm' key (mono visual)
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let color = substitute(s, '".*\sm\s\+\(.\{-}\)\s*\(s\s.*\)*\s*"', '\1', '')
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if color == s
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let color = ""
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endif
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endif
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endif
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endif
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" Vim cannot handle RGB codes with more than 6 hex digits
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if color =~ '#\x\{10,}$'
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let color = substitute(color, '\(\x\x\)\x\x', '\1', 'g')
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elseif color =~ '#\x\{7,}$'
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let color = substitute(color, '\(\x\x\)\x', '\1', 'g')
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" nor with 3 digits
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elseif color =~ '#\x\{3}$'
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let color = substitute(color, '\(\x\)\(\x\)\(\x\)', '0\10\20\3', '')
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endif
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" escape meta characters in patterns
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let s = escape(s, '/\*^$.~[]')
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let chars = escape(chars, '/\*^$.~[]')
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" now create syntax items
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" highlight the color string as normal string (no pixel string)
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exe 'syn match xpmCol'.n.'Def /'.s.'/ contains=xpmCol'.n.'inDef'
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exe 'hi link xpmCol'.n.'Def String'
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" but highlight the first whitespace after chars in its color
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exe 'syn match xpmCol'.n.'inDef /"'.chars.'/hs=s+'.(cpp+1).' contained'
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exe 'hi link xpmCol'.n.'inDef xpmColor'.n
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" remove the following whitespace from chars
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let chars = substitute(chars, '.$', '', '')
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" and create the syntax item contained in the pixel strings
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exe 'syn match xpmColor'.n.' /'.chars.'/ contained'
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exe 'syn cluster xpmColors add=xpmColor'.n
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" if no color or color = "None" show background
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if color == "" || substitute(color, '.*', '\L&', '') == 'none'
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exe 'hi xpmColor'.n.' guifg=bg'
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exe 'hi xpmColor'.n.' guibg=NONE'
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elseif color !~ "'"
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exe 'hi xpmColor'.n." guifg='".color."'"
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exe 'hi xpmColor'.n." guibg='".color."'"
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endif
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let n = n + 1
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else
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break " no more color string
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endif
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endif
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let i = i + 1
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endwhile
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unlet color chars colors cpp n i s
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endif " has("gui_running") || has("termguicolors") && &termguicolors
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" Define the default highlighting.
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" Only when an item doesn't have highlighting yet
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hi def link xpmType Type
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hi def link xpmStorageClass StorageClass
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hi def link xpmTodo Todo
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hi def link xpmComment Comment
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hi def link xpmPixelString String
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let b:current_syntax = "xpm"
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" vim: ts=8:sw=3:noet:
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