From d02548b2041bfe2721d7ba172aca20ea310bcfe4 Mon Sep 17 00:00:00 2001
From: yexo <yexo@openttd.org>
Date: Sun, 15 Mar 2009 22:41:57 +0000
Subject: (svn r15736) -Codechange: Split AIScanner/AIFileInfo to the more
 generic classes ScriptScanner/ScriptFileInfo.

---
 src/script/script_info.cpp | 72 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/script/script_info.cpp

(limited to 'src/script/script_info.cpp')

diff --git a/src/script/script_info.cpp b/src/script/script_info.cpp
new file mode 100644
index 000000000..12df08ce5
--- /dev/null
+++ b/src/script/script_info.cpp
@@ -0,0 +1,72 @@
+/* $Id$ */
+
+/** @file script_info.cpp Implementation of ScriptFileInfo. */
+
+#include "../stdafx.h"
+
+#include <squirrel.h>
+#include "squirrel.hpp"
+#include "squirrel_helper.hpp"
+
+#include "script_info.hpp"
+#include "script_scanner.hpp"
+
+ScriptFileInfo::~ScriptFileInfo()
+{
+	free((void *)this->author);
+	free((void *)this->name);
+	free((void *)this->short_name);
+	free((void *)this->description);
+	free((void *)this->date);
+	free((void *)this->instance_name);
+	free(this->main_script);
+	free(this->SQ_instance);
+}
+
+bool ScriptFileInfo::CheckMethod(const char *name) const
+{
+	if (!this->engine->MethodExists(*this->SQ_instance, name)) {
+		char error[1024];
+		snprintf(error, sizeof(error), "your info.nut/library.nut doesn't have the method '%s'", name);
+		this->engine->ThrowError(error);
+		return false;
+	}
+	return true;
+}
+
+/* static */ SQInteger ScriptFileInfo::Constructor(HSQUIRRELVM vm, ScriptFileInfo *info)
+{
+	/* Set some basic info from the parent */
+	info->SQ_instance = MallocT<SQObject>(1);
+	Squirrel::GetInstance(vm, info->SQ_instance, 2);
+	/* Make sure the instance stays alive over time */
+	sq_addref(vm, info->SQ_instance);
+	ScriptScanner *scanner = (ScriptScanner *)Squirrel::GetGlobalPointer(vm);
+	info->engine = scanner->GetEngine();
+
+	static const char * const required_functions[] = {
+		"GetAuthor",
+		"GetName",
+		"GetShortName",
+		"GetDescription",
+		"GetVersion",
+		"GetDate",
+		"CreateInstance",
+	};
+	for (size_t i = 0; i < lengthof(required_functions); i++) {
+		if (!info->CheckMethod(required_functions[i])) return SQ_ERROR;
+	}
+
+	info->main_script = strdup(scanner->GetMainScript());
+
+	/* Cache the data the info file gives us. */
+	if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetAuthor", &info->author)) return SQ_ERROR;
+	if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetName", &info->name)) return SQ_ERROR;
+	if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetShortName", &info->short_name)) return SQ_ERROR;
+	if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetDescription", &info->description)) return SQ_ERROR;
+	if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetDate", &info->date)) return SQ_ERROR;
+	if (!info->engine->CallIntegerMethod(*info->SQ_instance, "GetVersion", &info->version)) return SQ_ERROR;
+	if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "CreateInstance", &info->instance_name)) return SQ_ERROR;
+
+	return 0;
+}
-- 
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