From 66fae598c20f3373f9e8de5598ab4e989367634b Mon Sep 17 00:00:00 2001
From: Tomasz Sowa <t.sowa@ttmath.org>
Date: Fri, 25 Nov 2022 13:30:51 +0100
Subject: [PATCH] parse winixjson_* environment variables as json config
 options

---
 winixd/main/main.cpp | 54 ++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 49 insertions(+), 5 deletions(-)

diff --git a/winixd/main/main.cpp b/winixd/main/main.cpp
index 37f0a55..0f4ca81 100644
--- a/winixd/main/main.cpp
+++ b/winixd/main/main.cpp
@@ -244,7 +244,7 @@ bool ReadConfigs(const pt::Space::TableType & table, size_t & config_read)
 }
 
 
-void ReadEnvOption(const char * option)
+void ReadEnvStringOption(const char * option)
 {
 	const char winix_prefix[] = "winix_";
 	size_t prefix_len = sizeof(winix_prefix) - 1; // null terminating table
@@ -253,7 +253,6 @@ void ReadEnvOption(const char * option)
 	if( pt::is_substr_nc(winix_prefix, option) )
 	{
 		pt::utf8_to_wide(option + prefix_len, opt);
-
 		std::wstring::size_type sep = opt.find('=');
 
 		if( sep != std::wstring::npos )
@@ -268,12 +267,57 @@ void ReadEnvOption(const char * option)
 }
 
 
-void ReadConfigFromEnv(const char ** env)
+bool ReadEnvJsonOption(const char * option)
 {
+	const char winix_prefix[] = "winixjson_";
+	size_t prefix_len = sizeof(winix_prefix) - 1; // null terminating table
+	std::wstring opt;
+	bool status = true;
+
+	if( pt::is_substr_nc(winix_prefix, option) )
+	{
+		pt::utf8_to_wide(option + prefix_len, opt);
+		std::wstring::size_type sep = opt.find('=');
+
+		if( sep != std::wstring::npos )
+		{
+			pt::SpaceParser parser;
+			pt::Space value_space;
+			pt::SpaceParser::Status parse_status = parser.parse_json(opt.c_str() + sep + 1, value_space, false);
+			opt.erase(sep);
+			TemplatesFunctions::locale.ToSmall(opt);
+
+			switch(parse_status)
+			{
+			case pt::SpaceParser::Status::ok:
+				app.config.space.add(opt, value_space);
+				break;
+
+			default:
+				std::cout << "I cannot parse the " << option << " environment variable as JSON" << std::endl;
+				status = false;
+				break;
+			}
+		}
+	}
+
+	return status;
+}
+
+
+bool ReadConfigFromEnv(const char ** env)
+{
+	bool status = true;
+
 	for(size_t i = 0 ; env[i] ; ++i)
 	{
-		ReadEnvOption(env[i]);
+		ReadEnvStringOption(env[i]);
+
+		if( !ReadEnvJsonOption(env[i]) )
+			status = false;
 	}
+
+	return status;
 }
 
 
@@ -307,7 +351,7 @@ bool ReadConfigs(const pt::Space & options, const char ** env)
 
 	if( options.has_key(L"use-env") )
 	{
-		ReadConfigFromEnv(env);
+		status = status && ReadConfigFromEnv(env);
 	}
 
 	app.config.AssignValuesFromSpace();