support for IMAGE PASTING!!!!!!!!!!!!!

lua/telekasten.lua

@@ -19,6 +19,13 @@ local ZkCfg = {
 	dailies = home .. "/" .. "daily",
 	weeklies = home .. "/" .. "weekly",
 	templates = home .. "/" .. "templates",
+
+	-- image subdir for pasting
+	-- subdir name
+	-- or nil if pasted images shouldn't go into a special subdir
+	image_subdir = "img",
+
+	-- markdown file extension
 	extension = ".md",
 
 	-- following a link to a non-existing note will create it
@@ -31,6 +38,11 @@ local ZkCfg = {
 	template_new_daily = home .. "/" .. "templates/daily_tk.md",
 	template_new_weekly = home .. "/" .. "templates/weekly_tk.md",
 
+	-- image link style
+	-- wiki:     ![[image name]]
+	-- markdown: ![image name](image_subdir/xxxxx.png)
+	image_link_style = "wiki",
+
 	-- integrate with calendar-vim
 	plug_into_calendar = true,
 	calendar_opts = {
@@ -43,14 +55,6 @@ local ZkCfg = {
 	},
 }
 
--- ----------------------------------------------------------------------------
-
-local note_type_templates = {
-	normal = ZkCfg.template_new_note,
-	daily = ZkCfg.template_new_daily,
-	weekly = ZkCfg.template_new_weekly,
-}
-
 local function file_exists(fname)
 	local f = io.open(fname, "r")
 	-- print("checking for " .. fname)
@@ -62,6 +66,71 @@ local function file_exists(fname)
 	end
 end
 
+-- ----------------------------------------------------------------------------
+-- image stuff
+local imgFromClipboard = function()
+	if vim.fn.executable("xclip") == 0 then
+		print("No xclip installed!")
+		return
+	end
+
+	-- TODO: check `xclip -selection clipboard -t TARGETS -o` for the occurence of `image/png`
+
+	-- using plenary.job::new():sync() with on_stdout(_, data) unfortunately did some weird ASCII translation on the
+	-- data, so the PNGs were invalid. It seems like 0d 0a and single 0a bytes were stripped by the plenary job:
+	--
+	-- plenary job version:
+	-- $ hexdump -C /tmp/x.png|head
+	-- 00000000  89 50 4e 47 1a 00 00 00  49 48 44 52 00 00 03 19  |.PNG....IHDR....|
+	-- 00000010  00 00 01 c1 08 02 00 00  00 8a 73 e1 c3 00 00 00  |..........s.....|
+	-- 00000020  09 70 48 59 73 00 00 0e  c4 00 00 0e c4 01 95 2b  |.pHYs..........+|
+	-- 00000030  0e 1b 00 00 20 00 49 44  41 54 78 9c ec dd 77 58  |.... .IDATx...wX|
+	-- 00000040  14 d7 fa 07 f0 33 bb b3  4b af 0b 2c 08 22 1d 04  |.....3..K..,."..|
+	-- 00000050  05 11 10 1b a2 54 c5 1e  bb b1 c6 98 c4 68 72 4d  |.....T.......hrM|
+	-- 00000060  e2 cd 35 37 26 b9 49 6e  6e 7e f7 a6 98 98 a8 29  |..57&.Inn~.....)|
+	-- 00000070  26 6a 8c 51 63 8b bd 00  8a 58 40 b0 81 08 2a 45  |&j.Qc....X@...*E|
+	-- 00000080  69 52 17 58 ca ee b2 f5  f7 c7 ea 4a 10 66 d7 01  |iR.X.......J.f..|
+	-- 00000090  b1 e4 fb 79 7c f2 2c e7  cc 39 e7 3d 67 66 b3 2f  |...y|.,..9.=gf./|
+	--
+	-- OK version
+	-- $ hexdump -C /tmp/x2.png|head
+	-- 00000000  89 50 4e 47 0d 0a 1a 0a  00 00 00 0d 49 48 44 52  |.PNG........IHDR|
+	-- 00000010  00 00 03 19 00 00 01 c1  08 02 00 00 00 8a 73 e1  |..............s.|
+	-- 00000020  c3 00 00 00 09 70 48 59  73 00 00 0e c4 00 00 0e  |.....pHYs.......|
+	-- 00000030  c4 01 95 2b 0e 1b 00 00  20 00 49 44 41 54 78 9c  |...+.... .IDATx.|
+	-- 00000040  ec dd 77 58 14 d7 fa 07  f0 33 bb b3 4b af 0b 2c  |..wX.....3..K..,|
+	-- 00000050  08 22 1d 04 05 11 10 1b  a2 54 c5 1e bb b1 c6 98  |.".......T......|
+	-- 00000060  c4 68 72 4d e2 cd 35 37  26 b9 49 6e 6e 7e f7 a6  |.hrM..57&.Inn~..|
+	-- 00000070  98 98 a8 29 26 6a 8c 51  63 8b bd 00 8a 58 40 b0  |...)&j.Qc....X@.|
+	-- 00000080  81 08 2a 45 69 52 17 58  ca ee b2 f5 f7 c7 ea 4a  |..*EiR.X.......J|
+	-- 00000090  10 66 d7 01 b1 e4 fb 79  7c f2 2c e7 cc 39 e7 3d  |.f.....y|.,..9.=|
+
+	local pngname = "pasted_img_" .. os.date("%Y%m%d%H%M%S") .. ".png"
+	local pngpath = ZkCfg.home
+	local relpath = pngname
+
+	if ZkCfg.image_subdir then
+		relpath = ZkCfg.image_subdir .. "/" .. pngname
+	end
+	pngpath = pngpath .. "/" .. pngname
+
+	os.execute("xclip -selection clipboard -t image/png -o > " .. pngpath)
+	if file_exists(pngpath) then
+		if ZkCfg.image_link_style == "markdown" then
+			vim.api.nvim_put({ "![" .. pngname .. "](" .. relpath .. "]" }, "", false, true)
+		else
+			vim.api.nvim_put({ "![[" .. pngname .. "]]" }, "", false, true)
+		end
+	end
+end
+-- end of image stuff
+
+local note_type_templates = {
+	normal = ZkCfg.template_new_note,
+	daily = ZkCfg.template_new_daily,
+	weekly = ZkCfg.template_new_weekly,
+}
+
 local function daysuffix(day)
 	if (day == "1") or (day == "21") or (day == "31") then
 		return "st"
@@ -592,5 +661,6 @@ local M = {
 	show_calendar = ShowCalendar,
 	CalendarSignDay = CalendarSignDay,
 	CalendarAction = CalendarAction,
+	paste_img_and_link = imgFromClipboard,
 }
 return M