1 files changed, 121 insertions, 0 deletions
diff --git a/lua/scripts/setcolors.lua b/lua/scripts/setcolors.lua
new file mode 100644
index 0000000..605bc84
--- /dev/null
+++ b/lua/scripts/setcolors.lua
@@ -0,0 +1,121 @@
+vim.cmd([[
+" Change the color scheme from a list of color scheme names.
+" Version 2010-09-12 from http://vim.wikia.com/wiki/VimTip341
+" Press key:
+"   F8                next scheme
+"   Shift-F8          previous scheme
+"   Alt-F8            random scheme
+" Set the list of color schemes used by the above (default is 'all'):
+"   :SetColors all              (all $VIMRUNTIME/colors/*.vim)
+"   :SetColors my               (names built into script)
+"   :SetColors blue ayu ron   (these schemes)
+"   :SetColors                  (display current scheme names)
+" Set the current color scheme based on time of day:
+"   :SetColors now
+if v:version < 700 || exists('loaded_setcolors') || &cp
+  finish
+endif
+
+let loaded_setcolors = 1
+let s:mycolors = ['everblush', 'ayu', 'gruvbox', 'molokai', 'onedark', 'srcery']  " colorscheme names that we use to set color
+
+" Set list of color scheme names that we will use, except
+" argument 'now' actually changes the current color scheme.
+function! s:SetColors(args)
+  if len(a:args) == 0
+    echo 'Current color scheme names:'
+    let i = 0
+    while i < len(s:mycolors)
+      echo '  '.join(map(s:mycolors[i : i+4], 'printf("%-14s", v:val)'))
+      let i += 5
+    endwhile
+  elseif a:args == 'all'
+    let paths = split(globpath(&runtimepath, 'colors/*.vim'), "\n")
+    let s:mycolors = uniq(sort(map(paths, 'fnamemodify(v:val, ":t:r")')))
+    echo 'List of colors set from all installed color schemes'
+  elseif a:args == 'my'
+    let c1 = 'default srcery everblush'
+    let c2 = 'gruvbox onedark'
+    let c3 = 'ayu molokai'
+    let s:mycolors = split(c1.' '.c2.' '.c3)
+    echo 'List of colors set from built-in names'
+  elseif a:args == 'now'
+    call s:HourColor()
+  else
+    let s:mycolors = split(a:args)
+    echo 'List of colors set from argument (space-separated names)'
+  endif
+endfunction
+
+command! -nargs=* SetColors call s:SetColors('<args>')
+
+" Set next/previous/random (how = 1/-1/0) color from our list of colors.
+" The 'random' index is actually set from the current time in seconds.
+" Global (no 's:') so can easily call from command line.
+function! NextColor(how)
+  call s:NextColor(a:how, 1)
+endfunction
+
+" Helper function for NextColor(), allows echoing of the color name to be
+" disabled.
+function! s:NextColor(how, echo_color)
+  if len(s:mycolors) == 0
+    call s:SetColors('all')
+  endif
+  if exists('g:colors_name')
+    let current = index(s:mycolors, g:colors_name)
+  else
+    let current = -1
+  endif
+  let missing = []
+  let how = a:how
+  for i in range(len(s:mycolors))
+    if how == 0
+      let current = localtime() % len(s:mycolors)
+      let how = 1  " in case random color does not exist
+    else
+      let current += how
+      if !(0 <= current && current < len(s:mycolors))
+        let current = (how>0 ? 0 : len(s:mycolors)-1)
+      endif
+    endif
+    try
+      execute 'colorscheme '.s:mycolors[current]
+      break
+    catch /E185:/
+      call add(missing, s:mycolors[current])
+    endtry
+  endfor
+  redraw
+  if len(missing) > 0
+    echo 'Error: colorscheme not found:' join(missing)
+  endif
+  if (a:echo_color)
+    echo g:colors_name
+  endif
+endfunction
+
+nnoremap <leader>cn :call NextColor(1)<CR>
+nnoremap <leader>cp :call NextColor(-1)<CR>
+nnoremap <leader>cc :call NextColor(0)<CR>
+
+" Set color scheme according to current time of day.
+function! s:HourColor()
+  let hr = str2nr(strftime('%H'))
+  if hr <= 3
+    let i = 0
+  elseif hr <= 7
+    let i = 1
+  elseif hr <= 14
+    let i = 2
+  elseif hr <= 18
+    let i = 3
+  else
+    let i = 4
+  endif
+  let nowcolors = 'srcery onedark molokai'
+  execute 'colorscheme '.split(nowcolors)[i]
+  redraw
+  echo g:colors_name
+endfunction
+]])