From 608addf75a6283d6db9467dc27272a9e28fe4670 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Thu, 6 Feb 2025 17:27:18 +0100
Subject: Add argsplit to support multiple arguments in CXXFLAGS, CFLAGS and
 LDFLAGS.

---
 src/util.cc | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

(limited to 'src/util.cc')

diff --git a/src/util.cc b/src/util.cc
index dbd4c3c..6fc650a 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -6,6 +6,7 @@
 #include <iostream>
 #include <fstream>
 #include <algorithm>
+#include <sstream>
 
 std::string to_lower(const std::string& str)
 {
@@ -184,3 +185,95 @@ std::string locate(const std::string& prog,
 
 	return {};
 }
+
+std::vector<std::string> argsplit(const std::string& str)
+{
+	enum class state
+	{
+		normal,
+		in_quot,
+		in_apotrophe,
+	} state{state::normal};
+	bool esc{false};
+
+	std::string token;
+	std::vector<std::string> tokens;
+	for(auto c : str)
+	{
+		switch(state)
+		{
+		case state::normal:
+			if(esc)
+			{
+				esc = false;
+			}
+			else
+			{
+				if(c == ' ')
+				{
+					tokens.push_back(token);
+					token.clear();
+					continue;
+				}
+				if(c == '\\')
+				{
+					esc = true;
+				}
+				if(c == '"')
+				{
+					state = state::in_quot;
+				}
+				if(c == '\'')
+				{
+					state = state::in_apotrophe;
+				}
+			}
+
+			token += c;
+			break;
+		case state::in_quot:
+			if(esc)
+			{
+				esc = false;
+			}
+			else
+			{
+				if(c == '\\')
+				{
+					esc = true;
+				}
+				if(c == '"')
+				{
+					state = state::normal;
+				}
+			}
+
+			token += c;
+			break;
+		case state::in_apotrophe:
+			if(esc)
+			{
+				esc = false;
+			}
+			else
+			{
+				if(c == '\\')
+				{
+					esc = true;
+				}
+				if(c == '\'')
+				{
+					state = state::normal;
+				}
+			}
+
+			token += c;
+			break;
+		}
+	}
+	if(!token.empty())
+	{
+		tokens.push_back(token);
+	}
+	return tokens;
+}
-- 
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