From 149af030cd02ebb439e2e279d58560730b93f09f Mon Sep 17 00:00:00 2001
From: Bart van Strien <bart.bes@gmail.com>
Date: Mon, 26 Jul 2021 13:58:34 +0200
Subject: [PATCH] Make parse return a list of parse errors

Which basically just means unmatched lines.
There are no descriptive errors, at least for now, but at least this
gives you the option to display warnings or errors.
---
 inifile.lua | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/inifile.lua b/inifile.lua
index cd772cc..e6949ba 100644
--- a/inifile.lua
+++ b/inifile.lua
@@ -59,8 +59,12 @@ function inifile.parse(name, backend)
 	local comments = {}
 	local sectionorder = {}
 	local cursectionorder
+	local lineNumber = 0
+	local errors = {}
 
 	for line in backends[backend].lines(name) do
+		lineNumber = lineNumber + 1
+		local validLine = false
 
 		-- Section headers
 		local s = line:match("^%[([^%]]+)%]$")
@@ -69,6 +73,7 @@ function inifile.parse(name, backend)
 			t[section] = t[section] or {}
 			cursectionorder = {name = section}
 			table.insert(sectionorder, cursectionorder)
+			validLine = true
 		end
 
 		-- Comments
@@ -77,6 +82,7 @@ function inifile.parse(name, backend)
 			local commentsection = section or comments
 			comments[commentsection] = comments[commentsection] or {}
 			table.insert(comments[commentsection], s)
+			validLine = true
 		end
 
 		-- Key-value pairs
@@ -87,6 +93,11 @@ function inifile.parse(name, backend)
 		if key and value ~= nil then
 			t[section][key] = value
 			table.insert(cursectionorder, key)
+			validLine = true
+		end
+
+		if not validLine then
+			table.insert(errors, ("Line %d: Invalid data found '%s'"):format(lineNumber, line))
 		end
 	end
 
@@ -96,7 +107,7 @@ function inifile.parse(name, backend)
 			comments = comments,
 			sectionorder = sectionorder,
 		}
-	})
+	}), errors
 end
 
 function inifile.save(name, t, backend)