first commit

mpv/scripts/file-browser/addons/ftp-browser.lua

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+--[[
+    An addon for mpv-file-browser which adds support for ftp servers
+]]--
+
+local mp = require 'mp'
+local msg = require 'mp.msg'
+local utils = require 'mp.utils'
+local fb = require 'file-browser'
+
+local ftp = {
+    priority = 100,
+    api_version = "1.1.0"
+}
+
+function ftp:can_parse(directory)
+    return directory:sub(1, 6) == "ftp://"
+end
+
+--in my experience curl has been somewhat unreliable when it comes to ftp requests
+--this fuction retries the request a few times just in case
+local function execute(args)
+    msg.debug(utils.to_string(args))
+    local _, cmd = fb.get_parse_state():yield(
+        mp.command_native_async({
+            name = "subprocess",
+            playback_only = false,
+            capture_stdout = true,
+            capture_stderr = true,
+            args = args
+        }, fb.coroutine.callback())
+    )
+    return cmd
+end
+
+-- encodes special characters using the URL percent encoding format
+function urlEncode(url)
+    local domain, path = string.match(url, '(ftp://[^/]-/)(.*)')
+    if not path then return url end
+
+    -- these are the unreserved URI characters according to RFC 3986
+    -- https://www.rfc-editor.org/rfc/rfc3986#section-2.3
+    path = string.gsub(path, '[^%w.~_%-]', function(c)
+        return ('%%%x'):format(string.byte(c))
+    end)
+    return domain..path
+end
+
+function ftp:parse(directory)
+    msg.verbose(directory)
+
+    local ftp = execute({"curl", "-k", "-g", "--retry", "4", urlEncode(directory)})
+
+    local entries = execute({"curl", "-k", "-g", "-l", "--retry", "4", urlEncode(directory)})
+
+    if entries.status == 28 then
+        msg.error(entries.stderr)
+    elseif entries.status ~= 0 or ftp.status ~= 0 then
+        msg.error(entries.stderr)
+        return
+    end
+
+    local response = {}
+    for str in string.gmatch(ftp.stdout, "[^\r\n]+") do
+        table.insert(response, str)
+    end
+
+    local list = {}
+    local i = 1
+    for str in string.gmatch(entries.stdout, "[^\r\n]+") do
+        if str and response[i] then
+            msg.trace(str .. ' | ' .. response[i])
+
+            if response[i]:sub(1,1) == "d" then
+                table.insert(list, { name = str..'/', type = "dir" })
+            else
+                table.insert(list, { name = str, type = "file" })
+            end
+
+            i = i+1
+        end
+    end
+
+    return list
+end
+
+return ftp