fix: add pdf callback

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Added `opts.follow_img_func` option for customizing how to handle image paths.
 - Added better handling for undefined template fields, which will now be prompted for.
+- Added `opts.follow_pdf_func` option for customizing how to handle pdf paths.
 
 ### Changed
 

README.md

@@ -404,6 +404,15 @@ This is a complete list of all of the options that can be passed to `require("ob
     -- vim.cmd(':silent exec "!start ' .. url .. '"') -- Windows
   end,
 
+  -- Optional, by default when you use `:ObsidianFollowLink` on a link to an pdf
+  -- file it will be ignored but you can customize this behavior here.
+  ---@param pdf string
+  follow_pdf_func = function(pdf)
+    os.execute('open "' .. pdf .. '"') -- For macOS
+    -- os.execute('xdg-open "' .. pdf .. '"')  -- For Linux
+    -- os.execute('start "" "' .. pdf .. '"') -- For Windows
+  end,
+
   -- Optional, set to true if you use the Obsidian Advanced URI plugin.
   -- https://github.com/Vinzent03/obsidian-advanced-uri
   use_advanced_uri = false,

doc/obsidian.txt

@@ -459,6 +459,15 @@ carefully and customize it to your needs:
         -- vim.fn.jobstart({"xdg-open", url})  -- linux
         -- vim.cmd(':silent exec "!start ' .. url .. '"') -- Windows
       end,
+
+      -- Optional, by default when you use `:ObsidianFollowLink` on a link to an pdf
+      -- file it will be ignored but you can customize this behavior here.
+      ---@param pdf string
+      follow_pdf_func = function(pdf)
+	os.execute('open "' .. pdf .. '"') -- For macOS
+	-- os.execute('xdg-open "' .. pdf .. '"')  -- For Linux
+	-- os.execute('start "" "' .. pdf .. '"') -- For Windows
+      end,
 
       -- Optional, set to true if you use the Obsidian Advanced URI plugin.
       -- https://github.com/Vinzent03/obsidian-advanced-uri

lua/obsidian/client.lua

@@ -884,6 +884,15 @@ Client.follow_link_async = function(self, link, opts)
         return
       end
 
+      if util.is_pdf(res.location) then
+        if self.opts.follow_pdf_func ~= nil then
+          self.opts.follow_pdf_func(res.location)
+        else
+          log.warn "This looks like an image path. You can customize the behavior of images with the 'follow_pdf_func' option."
+        end
+        return
+      end
+
       if res.link_type == search.RefTypes.Wiki or res.link_type == search.RefTypes.WikiWithAlias then
         -- Prompt to create a new note.
         if util.confirm("Create new note '" .. res.location .. "'?") then

lua/obsidian/config.lua

@@ -17,6 +17,7 @@ local config = {}
 ---@field preferred_link_style obsidian.config.LinkStyle
 ---@field follow_url_func fun(url: string)|?
 ---@field follow_img_func fun(img: string)|?
+---@field follow_pdf_func fun(pdf: string)|?
 ---@field note_frontmatter_func (fun(note: obsidian.Note): table)|?
 ---@field disable_frontmatter (fun(fname: string?): boolean)|boolean|?
 ---@field completion obsidian.config.CompletionOpts

lua/obsidian/util.lua

@@ -202,6 +202,15 @@ util.is_img = function(s)
   return false
 end
 
+util.is_pdf = function(s)
+  for _, suffix in ipairs { ".pdf" } do
+    if vim.endswith(s, suffix) then
+      return true
+    end
+  end
+  return false
+end
+
 -- This function removes a single backslash within double square brackets
 util.unescape_single_backslash = function(text)
   return text:gsub("(%[%[[^\\]+)\\(%|[^\\]+]])", "%1%2")