From e371c801fed71bb73bc7c027e3de5ad2a6116673 Mon Sep 17 00:00:00 2001
From: Nathan Reiner <nathan@nathanreiner.xyz>
Date: Mon, 20 Apr 2026 19:30:28 +0200
Subject: add tests and fix path resolution bug

---
 src/blueprint       |  2 +-
 src/create.lua      |  2 +-
 src/lib/builder.lua | 16 ++++++++++------
 src/lib/path.lua    | 13 +++++++++++++
 4 files changed, 25 insertions(+), 8 deletions(-)

(limited to 'src')

diff --git a/src/blueprint b/src/blueprint
index 5a40650..35b9c0e 100755
--- a/src/blueprint
+++ b/src/blueprint
@@ -24,7 +24,7 @@ if command then
 	local status, ret = pcall(command)
 
 	if not status then
-		print('error: ' .. ret)
+		print('error: ' .. ret:gsub('^.+:%d+: (.+)$', '%1'))
 	end
 else
 	print([[blueprint <command> [options...]
diff --git a/src/create.lua b/src/create.lua
index 19ba7e8..e4bb202 100644
--- a/src/create.lua
+++ b/src/create.lua
@@ -12,7 +12,7 @@ return function()
 
 	local path = manager.get(args.template) or Path:new(args.template)
 
-	if not path:exists() then
+	if not path:exists() and not path:is_directory() then
 		error('template does not exist.')
 	end
 
diff --git a/src/lib/builder.lua b/src/lib/builder.lua
index adb55c8..1a9b0af 100644
--- a/src/lib/builder.lua
+++ b/src/lib/builder.lua
@@ -12,6 +12,10 @@ function Builder:from_template(path)
 		source = path,
 	}
 
+	if not builder.template or getmetatable(builder.template) ~= Template then
+		error('invalid template')
+	end
+
 	builder.source_directory = builder.source:parent()
 
 	setmetatable(builder, self)
@@ -41,13 +45,13 @@ function Builder:entries()
 
 	for _, value in ipairs(self.template.files) do
 		entries[#entries + 1] = {
-			path = Path:new(value.path),
+			path = self.source_directory / value.path,
 			env = value.env,
 		}
 	end
 
 	for _, value in ipairs(self.template.directories) do
-		for entry in Path:new(value.path):children() do
+		for entry in (self.source_directory / value.path):children() do
 			entries[#entries + 1] = {
 				path = entry,
 				env = value.env,
@@ -68,8 +72,8 @@ function Builder:build(args)
 
 	for entry in self:entries() do
 		instance:register(
-			entry.path,
-			entry.path.is_directory and nil or self:process_file(entry)
+			entry.path:relative_to_parent(self.source_directory),
+			not entry.path:is_directory() and self:process_file(entry) or nil
 		)
 	end
 
@@ -77,11 +81,11 @@ function Builder:build(args)
 end
 
 function Builder:process_file(file)
-	if not (self.source_directory / file.path):exists() then
+	if not file.path:exists() then
 		error(tostring(file.path) .. ' does not exist.')
 	end
 
-	local f = (self.source_directory / file.path):open("r")
+	local f = file.path:open("r")
 	local raw = f:read("*all")
 	f:close()
 
diff --git a/src/lib/path.lua b/src/lib/path.lua
index a0be1e5..925f017 100644
--- a/src/lib/path.lua
+++ b/src/lib/path.lua
@@ -8,6 +8,7 @@ function Path:new(p)
 	p = p:gsub("/$", "")
 	p = p:gsub("^%./", "")
 	p = p:gsub("/[^/]+/%.%.", "")
+	p = p:gsub("^[^/]+/%.%./", "")
 
 	local path = {
 		segments = p:split('/'),
@@ -126,6 +127,18 @@ function Path:remove(opts)
 	pipe:close()
 end
 
+function Path:is_parent_of(child)
+	return tostring(child):starts_with(tostring(self))
+end
+
+function Path:relative_to_parent(path)
+	if not path:is_parent_of(self) then
+		return nil
+	end
+
+	return Path:new(tostring(self):sub(#tostring(path) + 2))
+end
+
 return {
 	tests = {
 		function()
-- 
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