From 4bf47222c973c4bc935d6fde106329f8a0e103e3 Mon Sep 17 00:00:00 2001
From: Gregory Anders <8965202+gpanders@users.noreply.github.com>
Date: Thu, 16 Nov 2023 11:35:54 -0600
Subject: feat: add vim.text module (#26069)

---
 runtime/lua/vim/_init_packages.lua |  1 +
 runtime/lua/vim/text.lua           | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 runtime/lua/vim/text.lua

(limited to 'runtime/lua/vim')

diff --git a/runtime/lua/vim/_init_packages.lua b/runtime/lua/vim/_init_packages.lua
index 8750afba34..4a961970cc 100644
--- a/runtime/lua/vim/_init_packages.lua
+++ b/runtime/lua/vim/_init_packages.lua
@@ -57,6 +57,7 @@ vim._submodules = {
   fs = true,
   iter = true,
   re = true,
+  text = true,
 }
 
 -- These are for loading runtime modules in the vim namespace lazily.
diff --git a/runtime/lua/vim/text.lua b/runtime/lua/vim/text.lua
new file mode 100644
index 0000000000..cfb0f9b821
--- /dev/null
+++ b/runtime/lua/vim/text.lua
@@ -0,0 +1,32 @@
+--- Text processing functions.
+
+local M = {}
+
+--- Hex encode a string.
+---
+--- @param str string String to encode
+--- @return string Hex encoded string
+function M.hexencode(str)
+  local bytes = { str:byte(1, #str) }
+  local enc = {} ---@type string[]
+  for i = 1, #bytes do
+    enc[i] = string.format('%02X', bytes[i])
+  end
+  return table.concat(enc)
+end
+
+--- Hex decode a string.
+---
+--- @param enc string String to decode
+--- @return string Decoded string
+function M.hexdecode(enc)
+  assert(#enc % 2 == 0, 'string must have an even number of hex characters')
+  local str = {} ---@type string[]
+  for i = 1, #enc, 2 do
+    local n = assert(tonumber(enc:sub(i, i + 1), 16))
+    str[#str + 1] = string.char(n)
+  end
+  return table.concat(str)
+end
+
+return M
-- 
cgit