From 9959cb55a5e42f55cb9d98f8b4534512cb869bfe Mon Sep 17 00:00:00 2001
From: mcoqzeug <kevin_lee3@outlook.com>
Date: Sun, 22 Sep 2024 21:07:53 +0800
Subject: [PATCH 1/3] set cwd for dlv based on program

This potentially resolves #85.

vscode-go sets dlv cwd based on the value of program.

Reference: https://github.com/golang/vscode-go/blob/master/extension/src/goDebugConfiguration.ts#L545
---
 lua/dap-go.lua | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lua/dap-go.lua b/lua/dap-go.lua
index 6e125a9..f808059 100644
--- a/lua/dap-go.lua
+++ b/lua/dap-go.lua
@@ -81,6 +81,21 @@ local function setup_delve_adapter(dap, config)
   }
 
   dap.adapters.go = function(callback, client_config)
+    if client_config.program ~= nil then
+      local program = client_config.program
+      local path = require("plenary.path")
+      local program_path = path:new(program)
+      local program_absolute = program_path:absolute()
+
+      client_config.program = program_absolute
+
+      if program_path:is_dir() then
+        delve_config.executable.cwd = program_absolute
+      elseif program:match("^.+(%..+)$") == ".go" then -- file extension is '.go'
+        delve_config.executable.cwd = tostring(program_path:parent())
+      end
+    end
+
     if client_config.port == nil then
       callback(delve_config)
       return

From b49e81a6735ebc76eb2cf2be3efdf01582dbb74b Mon Sep 17 00:00:00 2001
From: jxl <juanxi.li@shopee.com>
Date: Sun, 6 Oct 2024 00:24:44 +0800
Subject: [PATCH 2/3] replace plenary.path with vim.loop functions

---
 lua/dap-go.lua | 44 +++++++++++++++++++++++++++++++++-----------
 1 file changed, 33 insertions(+), 11 deletions(-)

diff --git a/lua/dap-go.lua b/lua/dap-go.lua
index f808059..1f0ad2c 100644
--- a/lua/dap-go.lua
+++ b/lua/dap-go.lua
@@ -62,6 +62,25 @@ local function filtered_pick_process()
   return require("dap.utils").pick_process(opts)
 end
 
+local get_parent = (function()
+  local sep = "\\"
+
+  local os = string.lower(jit.os)
+  if os ~= "windows" then
+    sep = "/"
+  end
+
+  local pattern = string.format("^(.+)%s[^%s]+", sep, sep)
+
+  return function(abs_path)
+    local parent = abs_path:match(pattern)
+    if parent ~= nil and not parent:find(sep) then
+      return parent .. sep
+    end
+    return parent
+  end
+end)()
+
 local function setup_delve_adapter(dap, config)
   local args = { "dap", "-l", "127.0.0.1:" .. config.delve.port }
   vim.list_extend(args, config.delve.args)
@@ -82,17 +101,20 @@ local function setup_delve_adapter(dap, config)
 
   dap.adapters.go = function(callback, client_config)
     if client_config.program ~= nil then
-      local program = client_config.program
-      local path = require("plenary.path")
-      local program_path = path:new(program)
-      local program_absolute = program_path:absolute()
-
-      client_config.program = program_absolute
-
-      if program_path:is_dir() then
-        delve_config.executable.cwd = program_absolute
-      elseif program:match("^.+(%..+)$") == ".go" then -- file extension is '.go'
-        delve_config.executable.cwd = tostring(program_path:parent())
+      local program_absolute = vim.loop.fs_realpath(client_config.program)
+
+      if program_absolute ~= nil then
+        client_config.program = program_absolute
+
+        local is_dir = vim.loop.fs_stat(program_absolute).type == "directory"
+        if is_dir then
+          delve_config.executable.cwd = program_absolute
+        elseif program_absolute:sub(-3) == ".go" then -- file extension is '.go'
+          local parent = get_parent(program_absolute)
+          if parent ~= nil then
+            delve_config.executable.cwd = parent
+          end
+        end
       end
     end
 

From 6c292874c8964712c1718a6370652f323cfbd630 Mon Sep 17 00:00:00 2001
From: jxl <juanxi.li@shopee.com>
Date: Thu, 17 Oct 2024 17:18:26 +0800
Subject: [PATCH 3/3] use fnamemodify to get parent path instead of writing our
 own function

---
 lua/dap-go.lua | 23 ++---------------------
 1 file changed, 2 insertions(+), 21 deletions(-)

diff --git a/lua/dap-go.lua b/lua/dap-go.lua
index 1f0ad2c..caaee92 100644
--- a/lua/dap-go.lua
+++ b/lua/dap-go.lua
@@ -62,25 +62,6 @@ local function filtered_pick_process()
   return require("dap.utils").pick_process(opts)
 end
 
-local get_parent = (function()
-  local sep = "\\"
-
-  local os = string.lower(jit.os)
-  if os ~= "windows" then
-    sep = "/"
-  end
-
-  local pattern = string.format("^(.+)%s[^%s]+", sep, sep)
-
-  return function(abs_path)
-    local parent = abs_path:match(pattern)
-    if parent ~= nil and not parent:find(sep) then
-      return parent .. sep
-    end
-    return parent
-  end
-end)()
-
 local function setup_delve_adapter(dap, config)
   local args = { "dap", "-l", "127.0.0.1:" .. config.delve.port }
   vim.list_extend(args, config.delve.args)
@@ -109,8 +90,8 @@ local function setup_delve_adapter(dap, config)
         local is_dir = vim.loop.fs_stat(program_absolute).type == "directory"
         if is_dir then
           delve_config.executable.cwd = program_absolute
-        elseif program_absolute:sub(-3) == ".go" then -- file extension is '.go'
-          local parent = get_parent(program_absolute)
+        elseif vim.fn.fnamemodify(program_absolute, ":e") == ".go" then -- file extension is '.go'
+          local parent = vim.fn.fnamemodify(program_absolute, ":p:h")
           if parent ~= nil then
             delve_config.executable.cwd = parent
           end