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" Vim syntax file
" Language: X Pixmap
" Maintainer: Ronald Schild <rs@scutum.de>
" Last Change: 2017 Feb 01
" Version: 5.4n.1
" Jemma Nelson added termguicolors support
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
syn keyword xpmType char
syn keyword xpmStorageClass static
syn keyword xpmTodo TODO FIXME XXX contained
syn region xpmComment start="/\*" end="\*/" contains=xpmTodo
syn region xpmPixelString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=@xpmColors
if has("gui_running") || has("termguicolors") && &termguicolors
let color = ""
let chars = ""
let colors = 0
let cpp = 0
let n = 0
let i = 1
while i <= line("$") " scanning all lines
let s = matchstr(getline(i), '".\{-1,}"')
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', '')
if cpp =~ '[^0-9]'
break " if cpp is not made of digits there must be something wrong
endif
" Highlight the Values string as normal string (no pixel string).
" Only when there is no slash, it would terminate the pattern.
if s !~ '/'
exe 'syn match xpmValues /' . s . '/'
endif
hi link xpmValues String
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, '/\*^$.~[]')
let chars = escape(chars, '/\*^$.~[]')
" now create syntax items
" highlight the color string as normal string (no pixel string)
exe 'syn match xpmCol'.n.'Def /'.s.'/ contains=xpmCol'.n.'inDef'
exe 'hi link xpmCol'.n.'Def String'
" but highlight the first whitespace after chars in its color
exe 'syn match xpmCol'.n.'inDef /"'.chars.'/hs=s+'.(cpp+1).' contained'
exe 'hi link xpmCol'.n.'inDef xpmColor'.n
" remove the following whitespace from chars
let chars = substitute(chars, '.$', '', '')
" and create the syntax item contained in the pixel strings
exe 'syn match xpmColor'.n.' /'.chars.'/ contained'
exe 'syn cluster xpmColors add=xpmColor'.n
" if no color or color = "None" show background
if color == "" || substitute(color, '.*', '\L&', '') == 'none'
exe 'hi xpmColor'.n.' guifg=bg'
exe 'hi xpmColor'.n.' guibg=NONE'
elseif color !~ "'"
exe 'hi xpmColor'.n." guifg='".color."'"
exe 'hi xpmColor'.n." 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") || has("termguicolors") && &termguicolors
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
hi def link xpmType Type
hi def link xpmStorageClass StorageClass
hi def link xpmTodo Todo
hi def link xpmComment Comment
hi def link xpmPixelString String
let b:current_syntax = "xpm"
" vim: ts=8:sw=3:noet:
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