988 lines
34 KiB
VimL
988 lines
34 KiB
VimL
" CSApprox: Make gvim-only colorschemes Just Work terminal vim
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" Maintainer: Matthew Wozniski (mjw@drexel.edu)
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" Date: Wed, 01 Apr 2009 22:10:19 -0400
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" Version: 3.50
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" History: :help csapprox-changelog
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"
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" Long Description:
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" It's hard to find colorschemes for terminal Vim. Most colorschemes are
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" written to only support GVim, and don't work at all in terminal Vim.
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"
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" This plugin makes GVim-only colorschemes Just Work in terminal Vim, as long
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" as the terminal supports 88 or 256 colors - and most do these days. This
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" usually requires no user interaction (but see below for what to do if things
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" don't Just Work). After getting this plugin happily installed, any time you
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" use :colorscheme it will do its magic and make the colorscheme Just Work.
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"
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" Whenever you change colorschemes using the :colorscheme command this script
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" will be executed. It will take the colors that the scheme specified for use
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" in the GUI and use an approximation algorithm to try to gracefully degrade
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" them to the closest color available in your terminal. If you are running in
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" a GUI or if your terminal doesn't support 88 or 256 colors, no changes are
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" made. Also, no changes will be made if the colorscheme seems to have been
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" high color already.
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"
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" License:
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" Copyright (c) 2009, Matthew J. Wozniski
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" All rights reserved.
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"
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" Redistribution and use in source and binary forms, with or without
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" modification, are permitted provided that the following conditions are met:
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" * Redistributions of source code must retain the above copyright notice,
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" this list of conditions and the following disclaimer.
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" * Redistributions in binary form must reproduce the above copyright
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" notice, this list of conditions and the following disclaimer in the
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" documentation and/or other materials provided with the distribution.
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" * The names of the contributors may not be used to endorse or promote
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" products derived from this software without specific prior written
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" permission.
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"
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" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS
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" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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" NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT,
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" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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" OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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" NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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" {>1} Basic plugin setup
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" {>2} Check preconditions
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" Quit if the user doesn't want or need us or is missing the gui feature. We
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" need +gui to be able to check the gui color settings; vim doesn't bother to
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" store them if it is not built with +gui.
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if !has('gui') || exists('g:CSApprox_loaded')
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" XXX This depends upon knowing the default for g:CSApprox_verbose_level
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let s:verbose = 1
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if exists("g:CSApprox_verbose_level")
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let s:verbose = g:CSApprox_verbose_level
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endif
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if ! has('gui') && s:verbose > 0
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echomsg "CSApprox needs gui support - not loading."
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echomsg " See :help |csapprox-+gui| for possible workarounds."
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endif
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unlet s:verbose
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finish
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endif
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" {1} Mark us as loaded, and disable all compatibility options for now.
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let g:CSApprox_loaded = 1
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let s:savecpo = &cpo
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set cpo&vim
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" {>1} Built-in approximation algorithm
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" {>2} Cube definitions
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let s:xterm_colors = [ 0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF ]
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let s:eterm_colors = [ 0x00, 0x2A, 0x55, 0x7F, 0xAA, 0xD4 ]
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let s:konsole_colors = [ 0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF ]
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let s:xterm_greys = [ 0x08, 0x12, 0x1C, 0x26, 0x30, 0x3A,
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\ 0x44, 0x4E, 0x58, 0x62, 0x6C, 0x76,
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\ 0x80, 0x8A, 0x94, 0x9E, 0xA8, 0xB2,
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\ 0xBC, 0xC6, 0xD0, 0xDA, 0xE4, 0xEE ]
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let s:urxvt_colors = [ 0x00, 0x8B, 0xCD, 0xFF ]
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let s:urxvt_greys = [ 0x2E, 0x5C, 0x73, 0x8B,
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\ 0xA2, 0xB9, 0xD0, 0xE7 ]
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" {>2} Integer comparator
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" Used to sort the complete list of possible colors
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function! s:IntCompare(i1, i2)
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return a:i1 == a:i2 ? 0 : a:i1 > a:i2 ? 1 : -1
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endfunc
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" {>2} Approximator
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" Takes 3 decimal values for r, g, and b, and returns the closest cube number.
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" Uses &term to determine which cube should be used, though if &term is set to
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" "xterm" or begins with "screen", the variables g:CSApprox_eterm and
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" g:CSApprox_konsole can be used to select a different palette.
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"
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" This approximator considers closeness based upon the individiual components.
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" For each of r, g, and b, it finds the closest cube component available on
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" the cube. If the three closest matches can combine to form a valid color,
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" this color is used, otherwise we repeat the search with the greys removed,
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" meaning that the three new matches must make a valid color when combined.
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function! s:ApproximatePerComponent(r,g,b)
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let hex = printf("%02x%02x%02x", a:r, a:g, a:b)
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let greys = (&t_Co == 88 ? s:urxvt_greys : s:xterm_greys)
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if &t_Co == 88
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let colors = s:urxvt_colors
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let type = 'urxvt'
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elseif ((&term ==# 'xterm' || &term =~# '^screen' || &term==# 'builtin_gui')
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\ && exists('g:CSApprox_konsole') && g:CSApprox_konsole)
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\ || &term =~? '^konsole'
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let colors = s:konsole_colors
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let type = 'konsole'
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elseif ((&term ==# 'xterm' || &term =~# '^screen' || &term==# 'builtin_gui')
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\ && exists('g:CSApprox_eterm') && g:CSApprox_eterm)
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\ || &term =~? '^eterm'
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let colors = s:eterm_colors
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let type = 'eterm'
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else
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let colors = s:xterm_colors
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let type = 'xterm'
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endif
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if !exists('s:approximator_cache_'.type)
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let s:approximator_cache_{type} = {}
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endif
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let rv = get(s:approximator_cache_{type}, hex, -1)
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if rv != -1
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return rv
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endif
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" Only obtain sorted list once
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if !exists("s:".type."_greys_colors")
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let s:{type}_greys_colors = sort(greys + colors, "s:IntCompare")
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endif
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let greys_colors = s:{type}_greys_colors
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let r = s:NearestElemInList(a:r, greys_colors)
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let g = s:NearestElemInList(a:g, greys_colors)
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let b = s:NearestElemInList(a:b, greys_colors)
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let len = len(colors)
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if (r == g && g == b && index(greys, r) != -1)
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let rv = 16 + len * len * len + index(greys, r)
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else
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let r = s:NearestElemInList(a:r, colors)
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let g = s:NearestElemInList(a:g, colors)
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let b = s:NearestElemInList(a:b, colors)
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let rv = index(colors, r) * len * len
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\ + index(colors, g) * len
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\ + index(colors, b)
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\ + 16
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endif
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let s:approximator_cache_{type}[hex] = rv
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return rv
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endfunction
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" {>2} Color comparator
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" Finds the nearest element to the given element in the given list
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function! s:NearestElemInList(elem, list)
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let len = len(a:list)
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for i in range(len-1)
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if (a:elem <= (a:list[i] + a:list[i+1]) / 2)
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return a:list[i]
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endif
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endfor
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return a:list[len-1]
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endfunction
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" {>1} Collect info for the set highlights
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" {>2} Determine if synIDattr is usable
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" synIDattr() couldn't support 'guisp' until 7.2.052. This function returns
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" true if :redir is needed to find the 'guisp' attribute, false if synIDattr()
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" is functional. This test can be overridden by setting the global variable
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" g:CSApprox_redirfallback to 1 (to force use of :redir) or to 0 (to force use
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" of synIDattr()).
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function! s:NeedRedirFallback()
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if !exists("g:CSApprox_redirfallback")
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let g:CSApprox_redirfallback = (v:version == 702 && !has('patch52'))
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\ || v:version < 702
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endif
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return g:CSApprox_redirfallback
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endfunction
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" {>2} Collect and store the highlights
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" Get a dictionary containing information for every highlight group not merely
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" linked to another group. Return value is a dictionary, with highlight group
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" numbers for keys and values that are dictionaries with four keys each,
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" 'name', 'term', 'cterm', and 'gui'. 'name' holds the group name, and each
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" of the others holds highlight information for that particular mode.
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function! s:Highlights(modes)
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let rv = {}
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let i = 0
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while 1
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let i += 1
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" Only interested in groups that exist and aren't linked
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if synIDtrans(i) == 0
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break
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endif
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" Handle vim bug allowing groups with name == "" to be created
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if synIDtrans(i) != i || len(synIDattr(i, "name")) == 0
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continue
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endif
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let rv[i] = {}
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let rv[i].name = synIDattr(i, "name")
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for where in a:modes
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let rv[i][where] = {}
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for attr in [ "bold", "italic", "reverse", "underline", "undercurl" ]
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let rv[i][where][attr] = synIDattr(i, attr, where)
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endfor
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for attr in [ "fg", "bg" ]
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let rv[i][where][attr] = synIDattr(i, attr.'#', where)
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endfor
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if where == "gui"
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let rv[i][where]["sp"] = s:SynGuiSp(i, rv[i].name)
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else
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let rv[i][where]["sp"] = -1
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endif
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for attr in [ "fg", "bg", "sp" ]
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if rv[i][where][attr] == -1
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let rv[i][where][attr] = ''
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endif
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endfor
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endfor
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endwhile
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return rv
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endfunction
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" {>2} Retrieve guisp
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" Get guisp using whichever method is specified by _redir_fallback
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function! s:SynGuiSp(idx, name)
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if !s:NeedRedirFallback()
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return s:SynGuiSpAttr(a:idx)
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else
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return s:SynGuiSpRedir(a:name)
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endif
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endfunction
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" {>3} Implementation for retrieving guisp with redir hack
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function! s:SynGuiSpRedir(name)
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redir => temp
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exe 'sil hi ' . a:name
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redir END
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let temp = matchstr(temp, 'guisp=\zs.*')
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if len(temp) == 0 || temp[0] =~ '\s'
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let temp = ""
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else
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" Make sure we can handle guisp='dark red'
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let temp = substitute(temp, '[\x00].*', '', '')
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let temp = substitute(temp, '\s*\(c\=term\|gui\).*', '', '')
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let temp = substitute(temp, '\s*$', '', '')
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endif
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return temp
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endfunction
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" {>3} Implementation for retrieving guisp with synIDattr()
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function! s:SynGuiSpAttr(idx)
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return synIDattr(a:idx, 'sp#', 'gui')
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endfunction
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" {>1} Handle color names
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" Place to store rgb.txt name to color mappings - lazy loaded if needed
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let s:rgb = {}
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" {>2} Builtin gui color names
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" gui_x11.c and gui_gtk_x11.c have some default colors names that are searched
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" if the x server doesn't know about a color. If 'showrgb' is available,
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" we'll default to using these color names and values, and overwrite them with
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" other values if 'showrgb' tells us about those colors.
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let s:rgb_defaults = { "lightred" : "#FFBBBB",
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\ "lightgreen" : "#88FF88",
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\ "lightmagenta" : "#FFBBFF",
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\ "darkcyan" : "#008888",
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\ "darkblue" : "#0000BB",
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\ "darkred" : "#BB0000",
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\ "darkmagenta" : "#BB00BB",
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\ "darkgrey" : "#BBBBBB",
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\ "darkyellow" : "#BBBB00",
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\ "gray10" : "#1A1A1A",
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\ "grey10" : "#1A1A1A",
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\ "gray20" : "#333333",
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\ "grey20" : "#333333",
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\ "gray30" : "#4D4D4D",
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\ "grey30" : "#4D4D4D",
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\ "gray40" : "#666666",
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\ "grey40" : "#666666",
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\ "gray50" : "#7F7F7F",
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\ "grey50" : "#7F7F7F",
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\ "gray60" : "#999999",
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\ "grey60" : "#999999",
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\ "gray70" : "#B3B3B3",
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\ "grey70" : "#B3B3B3",
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\ "gray80" : "#CCCCCC",
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\ "grey80" : "#CCCCCC",
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\ "gray90" : "#E5E5E5",
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\ "grey90" : "#E5E5E5" }
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" {>2} Colors that vim will use by name in one of the default schemes, either
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" for bg=light or for bg=dark. This lets us avoid loading the entire rgb.txt
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" database when the scheme itself doesn't ask for colors by name.
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let s:rgb_presets = { "black" : "#000000",
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\ "blue" : "#0000ff",
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\ "brown" : "#a52a2a",
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\ "cyan" : "#00ffff",
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\ "darkblue" : "#00008b",
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\ "darkcyan" : "#008b8b",
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\ "darkgrey" : "#a9a9a9",
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\ "darkmagenta" : "#8b008b",
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\ "green" : "#00ff00",
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\ "grey" : "#bebebe",
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\ "grey40" : "#666666",
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\ "grey90" : "#e5e5e5",
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\ "lightblue" : "#add8e6",
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\ "lightcyan" : "#e0ffff",
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\ "lightgrey" : "#d3d3d3",
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\ "lightmagenta" : "#ffbbff",
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\ "magenta" : "#ff00ff",
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\ "red" : "#ff0000",
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\ "seagreen" : "#2e8b57",
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\ "white" : "#ffffff",
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\ "yellow" : "#ffff00" }
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" {>2} Find available color names
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" Find the valid named colors. By default, use our own rgb list, but try to
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" retrieve the system's list if g:CSApprox_use_showrgb is set to true. Store
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" the color names and color values to the dictionary s:rgb - the keys are
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" color names (in lowercase), the values are strings representing color values
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" (as '#rrggbb').
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function! s:UpdateRgbHash()
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try
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if !exists("g:CSApprox_use_showrgb") || !g:CSApprox_use_showrgb
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throw "Not using showrgb"
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endif
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" We want to use the 'showrgb' program, if it's around
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let lines = split(system('showrgb'), '\n')
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if v:shell_error || !exists('lines') || empty(lines)
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throw "'showrgb' didn't give us an rgb.txt"
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endif
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let s:rgb = copy(s:rgb_defaults)
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" fmt is (blanks?)(red)(blanks)(green)(blanks)(blue)(blanks)(name)
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let parsepat = '^\s*\(\d\+\)\s\+\(\d\+\)\s\+\(\d\+\)\s\+\(.*\)$'
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for line in lines
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let v = matchlist(line, parsepat)
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if len(v) < 0
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throw "CSApprox: Bad RGB line: " . string(line)
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endif
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let s:rgb[tolower(v[4])] = printf("#%02x%02x%02x", v[1], v[2], v[3])
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endfor
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catch
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try
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let s:rgb = csapprox#rgb()
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catch
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echohl ErrorMsg
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echomsg "Can't call rgb() from autoload/csapprox.vim"
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echomsg "Named colors will not be available!"
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echohl None
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endtry
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endtry
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return 0
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endfunction
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" {>1} Derive and set cterm attributes
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" {>2} Attribute overrides
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" Allow the user to override a specified attribute with another attribute.
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" For example, the default is to map 'italic' to 'underline' (since many
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" terminals cannot display italic text, and gvim itself will replace italics
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" with underlines where italicizing is impossible), and to replace 'sp' with
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" 'fg' (since terminals can't use one color for the underline and another for
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" the foreground, we color the entire word). This default can of course be
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" overridden by the user, by setting g:CSApprox_attr_map. This map must be
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" a dictionary of string keys, representing the same attributes that synIDattr
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" can look up, to string values, representing the attribute mapped to or an
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" empty string to disable the given attribute entirely.
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function! s:attr_map(attr)
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let rv = get(g:CSApprox_attr_map, a:attr, a:attr)
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return rv
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endfunction
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function! s:NormalizeAttrMap(map)
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let old = copy(a:map)
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let new = filter(a:map, '0')
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let valid_attrs = [ 'bg', 'fg', 'sp', 'bold', 'italic',
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\ 'reverse', 'underline', 'undercurl' ]
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let colorattrs = [ 'fg', 'bg', 'sp' ]
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for olhs in keys(old)
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if olhs ==? 'inverse'
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let nlhs = 'reverse'
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endif
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let orhs = old[olhs]
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if orhs ==? 'inverse'
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let nrhs = 'reverse'
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endif
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let nlhs = tolower(olhs)
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let nrhs = tolower(orhs)
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try
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if index(valid_attrs, nlhs) == -1
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echomsg "CSApprox: Bad attr map (removing unrecognized attribute " . olhs . ")"
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elseif nrhs != '' && index(valid_attrs, nrhs) == -1
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echomsg "CSApprox: Bad attr map (removing unrecognized attribute " . orhs . ")"
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elseif nrhs != '' && !!(index(colorattrs, nlhs)+1) != !!(index(colorattrs, nrhs)+1)
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echomsg "CSApprox: Bad attr map (removing " . olhs . "; type mismatch with " . orhs . ")"
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elseif nrhs == 'sp'
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echomsg "CSApprox: Bad attr map (removing " . olhs . "; can't map to 'sp')"
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else
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let new[nlhs] = nrhs
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endif
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catch
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echo v:exception
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endtry
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endfor
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endfunction
|
|
|
|
" {>2} Normalize the GUI settings of a highlight group
|
|
" If the Normal group is cleared, set it to gvim's default, black on white
|
|
" Though this would be a really weird thing for a scheme to do... *shrug*
|
|
function! s:FixupGuiInfo(highlights)
|
|
if a:highlights[s:hlid_normal].gui.bg == ''
|
|
let a:highlights[s:hlid_normal].gui.bg = 'white'
|
|
endif
|
|
|
|
if a:highlights[s:hlid_normal].gui.fg == ''
|
|
let a:highlights[s:hlid_normal].gui.fg = 'black'
|
|
endif
|
|
endfunction
|
|
|
|
" {>2} Map gui settings to cterm settings
|
|
" Given information about a highlight group, replace the cterm settings with
|
|
" the mapped gui settings, applying any attribute overrides along the way. In
|
|
" particular, this gives special treatment to the 'reverse' attribute and the
|
|
" 'guisp' attribute. In particular, if the 'reverse' attribute is set for
|
|
" gvim, we unset it for the terminal and instead set ctermfg to match guibg
|
|
" and vice versa, since terminals can consider a 'reverse' flag to mean using
|
|
" default-bg-on-default-fg instead of current-bg-on-current-fg. We also
|
|
" ensure that the 'sp' attribute is never set for cterm, since no terminal can
|
|
" handle that particular highlight. If the user wants to display the guisp
|
|
" color, he should map it to either 'fg' or 'bg' using g:CSApprox_attr_map.
|
|
function! s:FixupCtermInfo(highlights)
|
|
for hl in values(a:highlights)
|
|
|
|
if !has_key(hl, 'cterm')
|
|
let hl["cterm"] = {}
|
|
endif
|
|
|
|
" Find attributes to be set in the terminal
|
|
for attr in [ "bold", "italic", "reverse", "underline", "undercurl" ]
|
|
let hl.cterm[attr] = ''
|
|
if hl.gui[attr] == 1
|
|
if s:attr_map(attr) != ''
|
|
let hl.cterm[ s:attr_map(attr) ] = 1
|
|
endif
|
|
endif
|
|
endfor
|
|
|
|
for color in [ "bg", "fg" ]
|
|
let eff_color = color
|
|
if hl.cterm['reverse']
|
|
let eff_color = (color == 'bg' ? 'fg' : 'bg')
|
|
endif
|
|
|
|
let hl.cterm[color] = get(hl.gui, s:attr_map(eff_color), '')
|
|
endfor
|
|
|
|
if hl.gui['sp'] != '' && s:attr_map('sp') != ''
|
|
let hl.cterm[s:attr_map('sp')] = hl.gui['sp']
|
|
endif
|
|
|
|
if hl.cterm['reverse'] && hl.cterm.bg == ''
|
|
let hl.cterm.bg = 'fg'
|
|
endif
|
|
|
|
if hl.cterm['reverse'] && hl.cterm.fg == ''
|
|
let hl.cterm.fg = 'bg'
|
|
endif
|
|
|
|
if hl.cterm['reverse']
|
|
let hl.cterm.reverse = ''
|
|
endif
|
|
endfor
|
|
endfunction
|
|
|
|
" {>2} Set cterm colors for a highlight group
|
|
" Given the information for a single highlight group (ie, the value of
|
|
" one of the items in s:Highlights() already normalized with s:FixupCtermInfo
|
|
" and s:FixupGuiInfo), handle matching the gvim colors to the closest cterm
|
|
" colors by calling the appropriate approximator as specified with the
|
|
" g:CSApprox_approximator_function variable and set the colors and attributes
|
|
" appropriately to match the gui.
|
|
function! s:SetCtermFromGui(hl)
|
|
let hl = a:hl
|
|
|
|
" Set up the default approximator function, if needed
|
|
if !exists("g:CSApprox_approximator_function")
|
|
let g:CSApprox_approximator_function=function("s:ApproximatePerComponent")
|
|
endif
|
|
|
|
" Clear existing highlights
|
|
exe 'hi ' . hl.name . ' cterm=NONE ctermbg=NONE ctermfg=NONE'
|
|
|
|
for which in [ 'bg', 'fg' ]
|
|
let val = hl.cterm[which]
|
|
|
|
" Skip unset colors
|
|
if val == -1 || val == ""
|
|
continue
|
|
endif
|
|
|
|
" Try translating anything but 'fg', 'bg', #rrggbb, and rrggbb from an
|
|
" rgb.txt color to a #rrggbb color
|
|
if val !~? '^[fb]g$' && val !~ '^#\=\x\{6}$'
|
|
try
|
|
" First see if it is in our preset-by-vim rgb list
|
|
let val = s:rgb_presets[tolower(val)]
|
|
catch
|
|
" Then try loading and checking our real rgb list
|
|
if empty(s:rgb)
|
|
call s:UpdateRgbHash()
|
|
endif
|
|
try
|
|
let val = s:rgb[tolower(val)]
|
|
catch
|
|
" And then barf if we still haven't found it
|
|
if &verbose
|
|
echomsg "CSApprox: Colorscheme uses unknown color \"" . val . "\""
|
|
endif
|
|
continue
|
|
endtry
|
|
endtry
|
|
endif
|
|
|
|
if val =~? '^[fb]g$'
|
|
exe 'hi ' . hl.name . ' cterm' . which . '=' . val
|
|
let hl.cterm[which] = val
|
|
elseif val =~ '^#\=\x\{6}$'
|
|
let val = substitute(val, '^#', '', '')
|
|
let r = str2nr(val[0:1], 16)
|
|
let g = str2nr(val[2:3], 16)
|
|
let b = str2nr(val[4:5], 16)
|
|
let hl.cterm[which] = g:CSApprox_approximator_function(r, g, b)
|
|
exe 'hi ' . hl.name . ' cterm' . which . '=' . hl.cterm[which]
|
|
else
|
|
throw "Internal error handling color: " . val
|
|
endif
|
|
endfor
|
|
|
|
" Finally, set the attributes
|
|
let attrs = [ 'bold', 'italic', 'underline', 'undercurl' ]
|
|
call filter(attrs, 'hl.cterm[v:val] == 1')
|
|
|
|
if !empty(attrs)
|
|
exe 'hi ' . hl.name . ' cterm=' . join(attrs, ',')
|
|
endif
|
|
endfunction
|
|
|
|
|
|
" {>1} Top-level control
|
|
|
|
" Cache the highlight ID of the normal group; it's used often and won't change
|
|
let s:hlid_normal = hlID('Normal')
|
|
|
|
" {>2} Builtin cterm color names above 15
|
|
" Vim defines some color name to high color mappings internally (see
|
|
" syntax.c:do_highlight). Since we don't want to overwrite a colorscheme that
|
|
" was actually written for a high color terminal with our choices, but have no
|
|
" way to tell if a colorscheme was written for a high color terminal, we fall
|
|
" back on guessing. If any highlight group has a cterm color set to 16 or
|
|
" higher, we assume that the user has used a high color colorscheme - unless
|
|
" that color is one of the below, which vim can set internally when a color is
|
|
" requested by name.
|
|
let s:presets_88 = []
|
|
let s:presets_88 += [32] " Brown
|
|
let s:presets_88 += [72] " DarkYellow
|
|
let s:presets_88 += [84] " Gray
|
|
let s:presets_88 += [84] " Grey
|
|
let s:presets_88 += [82] " DarkGray
|
|
let s:presets_88 += [82] " DarkGrey
|
|
let s:presets_88 += [43] " LightBlue
|
|
let s:presets_88 += [61] " LightGreen
|
|
let s:presets_88 += [63] " LightCyan
|
|
let s:presets_88 += [74] " LightRed
|
|
let s:presets_88 += [75] " LightMagenta
|
|
let s:presets_88 += [78] " LightYellow
|
|
|
|
let s:presets_256 = []
|
|
let s:presets_256 += [130] " Brown
|
|
let s:presets_256 += [130] " DarkYellow
|
|
let s:presets_256 += [248] " Gray
|
|
let s:presets_256 += [248] " Grey
|
|
let s:presets_256 += [242] " DarkGray
|
|
let s:presets_256 += [242] " DarkGrey
|
|
let s:presets_256 += [ 81] " LightBlue
|
|
let s:presets_256 += [121] " LightGreen
|
|
let s:presets_256 += [159] " LightCyan
|
|
let s:presets_256 += [224] " LightRed
|
|
let s:presets_256 += [225] " LightMagenta
|
|
let s:presets_256 += [229] " LightYellow
|
|
|
|
" {>2} Wrapper around :exe to allow :executing multiple commands.
|
|
" "cmd" is the command to be :executed.
|
|
" If the variable is a String, it is :executed.
|
|
" If the variable is a List, each element is :executed.
|
|
function! s:exe(cmd)
|
|
if type(a:cmd) == type('')
|
|
exe a:cmd
|
|
else
|
|
for cmd in a:cmd
|
|
call s:exe(cmd)
|
|
endfor
|
|
endif
|
|
endfunction
|
|
|
|
" {>2} Function to handle hooks
|
|
" Prototype: HandleHooks(type [, scheme])
|
|
" "type" is the type of hook to be executed, ie. "pre" or "post"
|
|
" "scheme" is the name of the colorscheme that is currently active, if known
|
|
"
|
|
" If the variables g:CSApprox_hook_{type} and g:CSApprox_hook_{scheme}_{type}
|
|
" exist, this will :execute them in that order. If one does not exist, it
|
|
" will silently be ignored.
|
|
"
|
|
" If the scheme name contains characters that are invalid in a variable name,
|
|
" they will simply be removed. Ie, g:colors_name = "123 foo_bar-baz456"
|
|
" becomes "foo_barbaz456"
|
|
"
|
|
" NOTE: Exceptions will be printed out, rather than end processing early. The
|
|
" rationale is that it is worse for the user to fix the hook in an editor with
|
|
" broken colors. :)
|
|
function! s:HandleHooks(type, ...)
|
|
let type = a:type
|
|
let scheme = (a:0 == 1 ? a:1 : "")
|
|
let scheme = substitute(scheme, '[^[:alnum:]_]', '', 'g')
|
|
let scheme = substitute(scheme, '^\d\+', '', '')
|
|
|
|
for cmd in [ 'g:CSApprox_hook_' . type,
|
|
\ 'g:CSApprox_' . scheme . '_hook_' . type,
|
|
\ 'g:CSApprox_hook_' . scheme . '_' . type ]
|
|
if exists(cmd)
|
|
try
|
|
call s:exe(eval(cmd))
|
|
catch
|
|
echomsg "Error processing " . cmd . ":"
|
|
echomsg v:exception
|
|
endtry
|
|
endif
|
|
endfor
|
|
endfunction
|
|
|
|
" {>2} Main function
|
|
" Wrapper around the actual implementation to make it easier to ensure that
|
|
" all temporary settings are restored by the time we return, whether or not
|
|
" something was thrown. Additionally, sets the 'verbose' option to the max of
|
|
" g:CSApprox_verbose_level (default 1) and &verbose for the duration of the
|
|
" main function. This allows us to default to a message whenever any error,
|
|
" even a recoverable one, occurs, meaning the user quickly finds out when
|
|
" something's wrong, but makes it very easy for the user to make us silent.
|
|
function! s:CSApprox()
|
|
try
|
|
let savelz = &lz
|
|
|
|
set lz
|
|
|
|
if exists("g:CSApprox_attr_map") && type(g:CSApprox_attr_map) == type({})
|
|
call s:NormalizeAttrMap(g:CSApprox_attr_map)
|
|
else
|
|
let g:CSApprox_attr_map = { 'italic' : 'underline', 'sp' : 'fg' }
|
|
endif
|
|
|
|
" colors_name must be unset and reset, or vim will helpfully reload the
|
|
" colorscheme when we set the background for the Normal group.
|
|
" See the help entries ':hi-normal-cterm' and 'g:colors_name'
|
|
if exists("g:colors_name")
|
|
let colors_name = g:colors_name
|
|
unlet g:colors_name
|
|
endif
|
|
|
|
" Similarly, the global variable "syntax_cmd" must be set to something vim
|
|
" doesn't recognize, lest vim helpfully switch all colors back to the
|
|
" default whenever the Normal group is changed (in syncolor.vim)...
|
|
if exists("g:syntax_cmd")
|
|
let syntax_cmd = g:syntax_cmd
|
|
endif
|
|
let g:syntax_cmd = "PLEASE DON'T CHANGE ANY COLORS!!!"
|
|
|
|
" Set up our verbosity level, if needed.
|
|
" Default to 1, so the user can know if something's wrong.
|
|
if !exists("g:CSApprox_verbose_level")
|
|
let g:CSApprox_verbose_level = 1
|
|
endif
|
|
|
|
call s:HandleHooks("pre", (exists("colors_name") ? colors_name : ""))
|
|
|
|
" Set 'verbose' set to the maximum of &verbose and CSApprox_verbose_level
|
|
exe max([&vbs, g:CSApprox_verbose_level]) 'verbose call s:CSApproxImpl()'
|
|
|
|
call s:HandleHooks("post", (exists("colors_name") ? colors_name : ""))
|
|
finally
|
|
if exists("colors_name")
|
|
let g:colors_name = colors_name
|
|
endif
|
|
|
|
unlet g:syntax_cmd
|
|
if exists("syntax_cmd")
|
|
let g:syntax_cmd = syntax_cmd
|
|
endif
|
|
|
|
let &lz = savelz
|
|
endtry
|
|
endfunction
|
|
|
|
" {>2} CSApprox implementation
|
|
" Verifies that the user has not started the gui, and that vim recognizes his
|
|
" terminal as having enough colors for us to go on, then gathers the existing
|
|
" highlights and sets the cterm colors to match the gui colors for all those
|
|
" highlights (unless the colorscheme was already high-color).
|
|
function! s:CSApproxImpl()
|
|
" Return if not running in an 88/256 color terminal
|
|
if &t_Co != 256 && &t_Co != 88
|
|
if &verbose && !has('gui_running')
|
|
echomsg "CSApprox skipped; terminal only has" &t_Co "colors, not 88/256"
|
|
echomsg "Try checking :help csapprox-terminal for workarounds"
|
|
endif
|
|
|
|
return
|
|
endif
|
|
|
|
" Get the current highlight colors
|
|
let highlights = s:Highlights(["gui"])
|
|
|
|
let hinums = keys(highlights)
|
|
|
|
" Make sure that the script is not already 256 color by checking to make
|
|
" sure that no groups are set to a value above 256, unless the color they're
|
|
" set to can be set internally by vim (gotten by scraping
|
|
" color_numbers_{88,256} in syntax.c:do_highlight)
|
|
"
|
|
" XXX: s:inhibit_hicolor_test allows this test to be skipped for snapshots
|
|
if !exists("s:inhibit_hicolor_test") || !s:inhibit_hicolor_test
|
|
for hlid in hinums
|
|
for type in [ 'bg', 'fg' ]
|
|
let color = synIDattr(hlid, type, 'cterm')
|
|
|
|
if color > 15 && index(s:presets_{&t_Co}, str2nr(color)) < 0
|
|
" The value is set above 15, and wasn't set by vim.
|
|
if &verbose >= 2
|
|
echomsg 'CSApprox: Exiting - high' type 'color found for' highlights[hlid].name
|
|
endif
|
|
return
|
|
endif
|
|
endfor
|
|
endfor
|
|
endif
|
|
|
|
call s:FixupGuiInfo(highlights)
|
|
call s:FixupCtermInfo(highlights)
|
|
|
|
" We need to set the Normal group first so 'bg' and 'fg' work as colors
|
|
call insert(hinums, remove(hinums, index(hinums, string(s:hlid_normal))))
|
|
|
|
" then set each color's cterm attributes to match gui
|
|
for hlid in hinums
|
|
call s:SetCtermFromGui(highlights[hlid])
|
|
endfor
|
|
endfunction
|
|
|
|
" {>2} Write out the current colors to an 88/256 color colorscheme file.
|
|
" "file" - destination filename
|
|
" "overwrite" - overwrite an existing file
|
|
function! s:CSApproxSnapshot(file, overwrite)
|
|
let force = a:overwrite
|
|
let file = fnamemodify(a:file, ":p")
|
|
|
|
if empty(file)
|
|
throw "Bad file name: \"" . file . "\""
|
|
elseif (filewritable(fnamemodify(file, ':h')) != 2)
|
|
throw "Cannot write to directory \"" . fnamemodify(file, ':h') . "\""
|
|
elseif (glob(file) || filereadable(file)) && !force
|
|
" TODO - respect 'confirm' here and prompt if it's set.
|
|
echohl ErrorMsg
|
|
echomsg "E13: File exists (add ! to override)"
|
|
echohl None
|
|
return
|
|
endif
|
|
|
|
" Sigh... This is basically a bug, but one that I have no chance of fixing.
|
|
" Vim decides that Pmenu should be highlighted in 'LightMagenta' in terminal
|
|
" vim and as 'Magenta' in gvim... And I can't ask it what color it actually
|
|
" *wants*. As far as I can see, there's no way for me to learn that
|
|
" I should output 'Magenta' when 'LightMagenta' is provided by vim for the
|
|
" terminal.
|
|
if !has('gui_running')
|
|
echohl WarningMsg
|
|
echomsg "Warning: The written colorscheme may have incorrect colors"
|
|
echomsg " when CSApproxSnapshot is used in terminal vim!"
|
|
echohl None
|
|
endif
|
|
|
|
let save_t_Co = &t_Co
|
|
let s:inhibit_hicolor_test = 1
|
|
if exists("g:CSApprox_konsole")
|
|
let save_CSApprox_konsole = g:CSApprox_konsole
|
|
endif
|
|
if exists("g:CSApprox_eterm")
|
|
let save_CSApprox_eterm = g:CSApprox_eterm
|
|
endif
|
|
|
|
" Needed just like in CSApprox()
|
|
if exists("g:colors_name")
|
|
let colors_name = g:colors_name
|
|
unlet g:colors_name
|
|
endif
|
|
|
|
" Needed just like in CSApprox()
|
|
if exists("g:syntax_cmd")
|
|
let syntax_cmd = g:syntax_cmd
|
|
endif
|
|
let g:syntax_cmd = "PLEASE DON'T CHANGE ANY COLORS!!!"
|
|
|
|
try
|
|
let lines = []
|
|
let lines += [ '" This scheme was created by CSApproxSnapshot' ]
|
|
let lines += [ '" on ' . strftime("%a, %d %b %Y") ]
|
|
let lines += [ '' ]
|
|
let lines += [ 'hi clear' ]
|
|
let lines += [ 'if exists("syntax_on")' ]
|
|
let lines += [ ' syntax reset' ]
|
|
let lines += [ 'endif' ]
|
|
let lines += [ '' ]
|
|
let lines += [ 'if v:version < 700' ]
|
|
let lines += [ ' let g:colors_name = expand("<sfile>:t:r")' ]
|
|
let lines += [ ' command! -nargs=+ CSAHi exe "hi" substitute(substitute(<q-args>, "undercurl", "underline", "g"), "guisp\\S\\+", "", "g")' ]
|
|
let lines += [ 'else' ]
|
|
let lines += [ ' let g:colors_name = expand("<sfile>:t:r")' ]
|
|
let lines += [ ' command! -nargs=+ CSAHi exe "hi" <q-args>' ]
|
|
let lines += [ 'endif' ]
|
|
let lines += [ '' ]
|
|
|
|
let lines += [ 'if 0' ]
|
|
for round in [ 'konsole', 'eterm', 'xterm', 'urxvt' ]
|
|
sil! unlet g:CSApprox_eterm
|
|
sil! unlet g:CSApprox_konsole
|
|
|
|
if round == 'konsole'
|
|
let g:CSApprox_konsole = 1
|
|
elseif round == 'eterm'
|
|
let g:CSApprox_eterm = 1
|
|
endif
|
|
|
|
if round == 'urxvt'
|
|
set t_Co=88
|
|
else
|
|
set t_Co=256
|
|
endif
|
|
|
|
call s:CSApprox()
|
|
|
|
let highlights = s:Highlights(["term", "cterm", "gui"])
|
|
call s:FixupGuiInfo(highlights)
|
|
|
|
if round == 'konsole' || round == 'eterm'
|
|
let lines += [ 'elseif has("gui_running") || (&t_Co == ' . &t_Co
|
|
\ . ' && (&term ==# "xterm" || &term =~# "^screen")'
|
|
\ . ' && exists("g:CSApprox_' . round . '")'
|
|
\ . ' && g:CSApprox_' . round . ')'
|
|
\ . ' || &term =~? "^' . round . '"' ]
|
|
else
|
|
let lines += [ 'elseif has("gui_running") || &t_Co == ' . &t_Co ]
|
|
endif
|
|
|
|
let hinums = keys(highlights)
|
|
|
|
call insert(hinums, remove(hinums, index(hinums, string(s:hlid_normal))))
|
|
|
|
for hlnum in hinums
|
|
let hl = highlights[hlnum]
|
|
let line = ' CSAHi ' . hl.name
|
|
for type in [ 'term', 'cterm', 'gui' ]
|
|
let attrs = [ 'reverse', 'bold', 'italic', 'underline', 'undercurl' ]
|
|
call filter(attrs, 'hl[type][v:val] == 1')
|
|
let line .= ' ' . type . '=' . (empty(attrs) ? 'NONE' : join(attrs, ','))
|
|
if type != 'term'
|
|
let line .= ' ' . type . 'bg=' . (len(hl[type].bg) ? hl[type].bg : 'bg')
|
|
let line .= ' ' . type . 'fg=' . (len(hl[type].fg) ? hl[type].fg : 'fg')
|
|
if type == 'gui' && hl.gui.sp !~ '^\s*$'
|
|
let line .= ' ' . type . 'sp=' . hl[type].sp
|
|
endif
|
|
endif
|
|
endfor
|
|
let lines += [ line ]
|
|
endfor
|
|
endfor
|
|
let lines += [ 'endif' ]
|
|
let lines += [ '' ]
|
|
let lines += [ 'if 1' ]
|
|
let lines += [ ' delcommand CSAHi' ]
|
|
let lines += [ 'endif' ]
|
|
call writefile(lines, file)
|
|
finally
|
|
let &t_Co = save_t_Co
|
|
|
|
if exists("save_CSApprox_konsole")
|
|
let g:CSApprox_konsole = save_CSApprox_konsole
|
|
endif
|
|
if exists("save_CSApprox_eterm")
|
|
let g:CSApprox_eterm = save_CSApprox_eterm
|
|
endif
|
|
|
|
if exists("colors_name")
|
|
let g:colors_name = colors_name
|
|
endif
|
|
|
|
unlet g:syntax_cmd
|
|
if exists("syntax_cmd")
|
|
let g:syntax_cmd = syntax_cmd
|
|
endif
|
|
|
|
call s:CSApprox()
|
|
|
|
unlet s:inhibit_hicolor_test
|
|
endtry
|
|
endfunction
|
|
|
|
" {>2} Snapshot user command
|
|
command! -bang -nargs=1 -complete=file -bar CSApproxSnapshot
|
|
\ call s:CSApproxSnapshot(<f-args>, strlen("<bang>"))
|
|
|
|
" {>1} Hooks
|
|
|
|
" {>2} Autocmds
|
|
" Set up an autogroup to hook us on the completion of any :colorscheme command
|
|
augroup CSApprox
|
|
au!
|
|
au ColorScheme * call s:CSApprox()
|
|
"au User CSApproxPost highlight Normal ctermbg=none | highlight NonText ctermbg=None
|
|
augroup END
|
|
|
|
" {>2} Execute
|
|
" The last thing to do when sourced is to run and actually fix up the colors.
|
|
if !has('gui_running')
|
|
call s:CSApprox()
|
|
endif
|
|
|
|
" {>1} Restore compatibility options
|
|
let &cpo = s:savecpo
|
|
unlet s:savecpo
|
|
|
|
|
|
" {0} vim:sw=2:sts=2:et:fdm=expr:fde=substitute(matchstr(getline(v\:lnum),'^\\s*"\\s*{\\zs.\\{-}\\ze}'),'^$','=','')
|