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Update the JSON module to work with the modified API.

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This commit is contained in:
Sandu Liviu Catalin
2016-06-03 21:28:50 +03:00
parent 40ab83743c
commit e3f861ccbd
5 changed files with 43 additions and 464 deletions
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166
modules/json/Common.cpp
View File

@@ -1,175 +1,9 @@
// ------------------------------------------------------------------------------------------------
#include "Common.hpp"
#include "Module.hpp"
// ------------------------------------------------------------------------------------------------
#include <cstdlib>
#include <cstring>
#include <cstdarg>
// ------------------------------------------------------------------------------------------------
#include <sqrat.h>
// ------------------------------------------------------------------------------------------------
namespace SqMod {
// ------------------------------------------------------------------------------------------------
static SQChar g_Buffer[4096]; // Common buffer to reduce memory allocations.
// ------------------------------------------------------------------------------------------------
SStr GetTempBuff()
{
return g_Buffer;
}
// ------------------------------------------------------------------------------------------------
Uint32 GetTempBuffSize()
{
return sizeof(g_Buffer);
}
// ------------------------------------------------------------------------------------------------
void SqThrowF(CSStr str, ...)
{
// Initialize the argument list
va_list args;
va_start (args, str);
// Write the requested contents
if (std::vsnprintf(g_Buffer, sizeof(g_Buffer), str, args) < 0)
{
std::strcpy(g_Buffer, "Unknown error has occurred");
}
// Release the argument list
va_end(args);
// Throw the exception with the resulted message
throw Sqrat::Exception(g_Buffer);
}
// ------------------------------------------------------------------------------------------------
CSStr FmtStr(CSStr str, ...)
{
// Initialize the argument list
va_list args;
va_start (args, str);
// Write the requested contents
if (std::vsnprintf(g_Buffer, sizeof(g_Buffer), str, args) < 0)
{
g_Buffer[0] = '\0'; // Make sure the string is terminated
}
// Release the argument list
va_end(args);
// Return the data from the buffer
return g_Buffer;
}
// ------------------------------------------------------------------------------------------------
StackGuard::StackGuard()
: m_VM(_SqVM), m_Top(sq_gettop(m_VM))
{
/* ... */
}
// ------------------------------------------------------------------------------------------------
StackGuard::StackGuard(HSQUIRRELVM vm)
: m_VM(vm), m_Top(sq_gettop(vm))
{
/* ... */
}
// ------------------------------------------------------------------------------------------------
StackGuard::~StackGuard()
{
sq_pop(m_VM, sq_gettop(m_VM) - m_Top);
}
// --------------------------------------------------------------------------------------------
StackStrF::StackStrF(HSQUIRRELVM vm, SQInteger idx, bool fmt)
: mPtr(nullptr)
, mLen(-1)
, mRes(SQ_OK)
, mObj()
, mVM(vm)
{
const Int32 top = sq_gettop(vm);
// Reset the converted value object
sq_resetobject(&mObj);
// Was the string or value specified?
if (top <= (idx - 1))
{
mRes = sq_throwerror(vm, "Missing string or value");
}
// Do we have enough values to call the format function and are we allowed to?
else if (top > idx && fmt)
{
// Pointer to the generated string
SStr str = nullptr;
// Attempt to generate the specified string format
mRes = sqstd_format(vm, idx, &mLen, &str);
// Did the format succeeded but ended up with a null string pointer?
if (SQ_SUCCEEDED(mRes) && !str)
{
mRes = sq_throwerror(vm, "Unable to generate the string");
}
else
{
mPtr = const_cast< CSStr >(str);
}
}
// Is the value on the stack an actual string?
else if (sq_gettype(vm, idx) == OT_STRING)
{
// Obtain a reference to the string object
mRes = sq_getstackobj(vm, idx, &mObj);
// Could we retrieve the object from the stack?
if (SQ_SUCCEEDED(mRes))
{
// Keep a strong reference to the object
sq_addref(vm, &mObj);
// Attempt to retrieve the string value from the stack
mRes = sq_getstring(vm, idx, &mPtr);
}
// Did the retrieval succeeded but ended up with a null string pointer?
if (SQ_SUCCEEDED(mRes) && !mPtr)
{
mRes = sq_throwerror(vm, "Unable to retrieve the string");
}
}
// We have to try and convert it to string
else
{
// Attempt to convert the value from the stack to a string
mRes = sq_tostring(vm, idx);
// Could we convert the specified value to string?
if (SQ_SUCCEEDED(mRes))
{
// Obtain a reference to the resulted object
mRes = sq_getstackobj(vm, -1, &mObj);
// Could we retrieve the object from the stack?
if (SQ_SUCCEEDED(mRes))
{
// Keep a strong reference to the object
sq_addref(vm, &mObj);
// Attempt to obtain the string pointer
mRes = sq_getstring(vm, -1, &mPtr);
}
}
// Pop a value from the stack regardless of the result
sq_pop(vm, 1);
// Did the retrieval succeeded but ended up with a null string pointer?
if (SQ_SUCCEEDED(mRes) && !mPtr)
{
mRes = sq_throwerror(vm, "Unable to retrieve the value");
}
}
}
// ------------------------------------------------------------------------------------------------
StackStrF::~StackStrF()
{
if (mVM && !sq_isnull(mObj))
{
sq_release(mVM, &mObj);
}
}
} // Namespace:: SqMod

117
modules/json/Common.hpp
View File

@@ -2,10 +2,7 @@
#define _SQJSON_COMMON_HPP_
// ------------------------------------------------------------------------------------------------
#include "ModBase.hpp"
// ------------------------------------------------------------------------------------------------
#include <squirrel.h>
#include "Base/Utility.hpp"
// ------------------------------------------------------------------------------------------------
namespace SqMod {
@@ -23,118 +20,6 @@ namespace SqMod {
#define SQJSON_VERSION_MINOR 0
#define SQJSON_VERSION_PATCH 1
/* ------------------------------------------------------------------------------------------------
* Retrieve the temporary buffer.
*/
SStr GetTempBuff();
/* ------------------------------------------------------------------------------------------------
* Retrieve the size of the temporary buffer.
*/
Uint32 GetTempBuffSize();
/* ------------------------------------------------------------------------------------------------
* Throw a formatted exception.
*/
void SqThrowF(CSStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Generate a formatted string.
*/
CSStr FmtStr(CSStr str, ...);
/* ------------------------------------------------------------------------------------------------
* Implements RAII to restore the VM stack to it's initial size on function exit.
*/
struct StackGuard
{
/* --------------------------------------------------------------------------------------------
* Default constructor.
*/
StackGuard();
/* --------------------------------------------------------------------------------------------
* Base constructor.
*/
StackGuard(HSQUIRRELVM vm);
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~StackGuard();
private:
/* --------------------------------------------------------------------------------------------
* Copy constructor.
*/
StackGuard(const StackGuard &);
/* --------------------------------------------------------------------------------------------
* Move constructor.
*/
StackGuard(StackGuard &&);
/* --------------------------------------------------------------------------------------------
* Copy assignment operator.
*/
StackGuard & operator = (const StackGuard &);
/* --------------------------------------------------------------------------------------------
* Move assignment operator.
*/
StackGuard & operator = (StackGuard &&);
private:
// --------------------------------------------------------------------------------------------
HSQUIRRELVM m_VM; // The VM where the stack should be restored.
Int32 m_Top; // The top of the stack when this instance was created.
};
/* ------------------------------------------------------------------------------------------------
* Helper structure for retrieving a value from the stack as a string or a formatted string.
*/
struct StackStrF
{
// --------------------------------------------------------------------------------------------
CSStr mPtr; // Pointer to the C string that was retrieved.
SQInteger mLen; // The string length if it could be retrieved.
SQRESULT mRes; // The result of the retrieval attempts.
HSQOBJECT mObj; // Strong reference to the string object.
HSQUIRRELVM mVM; // The associated virtual machine.
/* --------------------------------------------------------------------------------------------
* Base constructor.
*/
StackStrF(HSQUIRRELVM vm, SQInteger idx, bool fmt = true);
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF(const StackStrF & o) = delete;
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF(StackStrF && o) = delete;
/* --------------------------------------------------------------------------------------------
* Destructor.
*/
~StackStrF();
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF & operator = (const StackStrF & o) = delete;
/* --------------------------------------------------------------------------------------------
* Copy constructor. (disabled)
*/
StackStrF & operator = (StackStrF && o) = delete;
};
} // Namespace:: SqMod
#endif // _SQJSON_COMMON_HPP_

178
modules/json/Module.cpp
View File

@@ -1,35 +1,15 @@
// --------------------------------------------------------------------------------------------
#include "Module.hpp"
// ------------------------------------------------------------------------------------------------
#include "Common.hpp"
// --------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------------
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cstdarg>
// --------------------------------------------------------------------------------------------
#include <sqrat.h>
// --------------------------------------------------------------------------------------------
#if defined(WIN32) || defined(_WIN32)
#include <Windows.h>
#endif
// ------------------------------------------------------------------------------------------------
namespace SqMod {
// --------------------------------------------------------------------------------------------
PluginFuncs* _Func = nullptr;
PluginCallbacks* _Clbk = nullptr;
PluginInfo* _Info = nullptr;
// --------------------------------------------------------------------------------------------
HSQAPI _SqAPI = nullptr;
HSQEXPORTS _SqMod = nullptr;
HSQUIRRELVM _SqVM = nullptr;
/* ------------------------------------------------------------------------------------------------
* Bind speciffic functions to certain server events.
* Bind specific functions to certain server events.
*/
void BindCallbacks();
@@ -38,22 +18,22 @@ void BindCallbacks();
*/
void UnbindCallbacks();
/* --------------------------------------------------------------------------------------------
/* ------------------------------------------------------------------------------------------------
* Register the module API under the specified virtual machine.
*/
void RegisterAPI(HSQUIRRELVM vm);
/* --------------------------------------------------------------------------------------------
* Initialize the plugin by obtaining the API provided by the host plugin.
/* ------------------------------------------------------------------------------------------------
* Initialize the plug-in by obtaining the API provided by the host plug-in.
*/
void OnSquirrelInitialize()
{
// Attempt to import the plugin API exported by the host plugin
// Attempt to import the plug-in API exported by the host plug-in
_SqMod = sq_api_import(_Func);
// Did we failed to obtain the plugin exports?
if(!_SqMod)
// Did we failed to obtain the plug-in exports?
if (!_SqMod)
{
OutputError("Failed to attach [%s] on host plugin.", SQJSON_NAME);
OutputError("Failed to attach [%s] on host plug-in.", SQJSON_NAME);
}
else
{
@@ -64,12 +44,12 @@ void OnSquirrelInitialize()
}
}
/* --------------------------------------------------------------------------------------------
/* ------------------------------------------------------------------------------------------------
* Load the module on the virtual machine provided by the host module.
*/
void OnSquirrelLoad()
{
// Make sure that we have a valid plugin API
// Make sure that we have a valid plug-in API
if (!_SqMod)
{
return; // Unable to proceed.
@@ -89,24 +69,28 @@ void OnSquirrelLoad()
OutputMessage("Registered: %s", SQJSON_NAME);
}
/* --------------------------------------------------------------------------------------------
/* ------------------------------------------------------------------------------------------------
* The virtual machine is about to be terminated and script resources should be released.
*/
void OnSquirrelTerminate()
{
OutputMessage("Terminating: %s", SQJSON_NAME);
// Release null objects just in case
NullObject().Release();
NullTable().Release();
NullArray().Release();
NullFunction().ReleaseGently();
// Release the current virtual machine, if any
DefaultVM::Set(nullptr);
// Release script resources...
}
/* --------------------------------------------------------------------------------------------
/* ------------------------------------------------------------------------------------------------
* Validate the module API to make sure we don't run into issues.
*/
bool CheckAPIVer(CCStr ver)
{
// Obtain the numeric representation of the API version
long vernum = std::strtol(ver, nullptr, 10);
const LongI vernum = std::strtol(ver, nullptr, 10);
// Check against version mismatch
if (vernum == SQMOD_API_VER)
{
@@ -119,8 +103,8 @@ bool CheckAPIVer(CCStr ver)
return false;
}
/* --------------------------------------------------------------------------------------------
* React to command sent by other plugins.
/* ------------------------------------------------------------------------------------------------
* React to command sent by other plug-ins.
*/
static uint8_t OnPluginCommand(uint32_t command_identifier, CCStr message)
{
@@ -143,8 +127,8 @@ static uint8_t OnPluginCommand(uint32_t command_identifier, CCStr message)
return 1;
}
/* --------------------------------------------------------------------------------------------
* The server was initialized and this plugin was loaded successfully.
/* ------------------------------------------------------------------------------------------------
* The server was initialized and this plug-in was loaded successfully.
*/
static uint8_t OnServerInitialise()
{
@@ -173,125 +157,39 @@ void UnbindCallbacks()
_Clbk->OnPluginCommand = nullptr;
}
// --------------------------------------------------------------------------------------------
// ------------------------------------------------------------------------------------------------
void RegisterAPI(HSQUIRRELVM vm)
{
}
// --------------------------------------------------------------------------------------------
void OutputMessageImpl(const char * msg, va_list args)
{
#if defined(WIN32) || defined(_WIN32)
HANDLE hstdout = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO csb_before;
GetConsoleScreenBufferInfo( hstdout, &csb_before);
SetConsoleTextAttribute(hstdout, FOREGROUND_GREEN);
std::printf("[SQMOD] ");
SetConsoleTextAttribute(hstdout, FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_RED | FOREGROUND_INTENSITY);
std::vprintf(msg, args);
std::puts("");
SetConsoleTextAttribute(hstdout, csb_before.wAttributes);
#else
std::printf("%c[0;32m[SQMOD]%c[0m", 27, 27);
std::vprintf(msg, args);
std::puts("");
#endif
}
// --------------------------------------------------------------------------------------------
void OutputErrorImpl(const char * msg, va_list args)
{
#if defined(WIN32) || defined(_WIN32)
HANDLE hstdout = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO csb_before;
GetConsoleScreenBufferInfo( hstdout, &csb_before);
SetConsoleTextAttribute(hstdout, FOREGROUND_RED | FOREGROUND_INTENSITY);
std::printf("[SQMOD] ");
SetConsoleTextAttribute(hstdout, FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_RED | FOREGROUND_INTENSITY);
std::vprintf(msg, args);
std::puts("");
SetConsoleTextAttribute(hstdout, csb_before.wAttributes);
#else
std::printf("%c[0;91m[SQMOD]%c[0m", 27, 27);
std::vprintf(msg, args);
std::puts("");
#endif
}
// --------------------------------------------------------------------------------------------
void OutputDebug(const char * msg, ...)
{
#ifdef _DEBUG
// Initialize the arguments list
va_list args;
va_start(args, msg);
// Call the output function
OutputMessageImpl(msg, args);
// Finalize the arguments list
va_end(args);
#else
SQMOD_UNUSED_VAR(msg);
#endif
}
// --------------------------------------------------------------------------------------------
void OutputMessage(const char * msg, ...)
{
// Initialize the arguments list
va_list args;
va_start(args, msg);
// Call the output function
OutputMessageImpl(msg, args);
// Finalize the arguments list
va_end(args);
}
// --------------------------------------------------------------------------------------------
void OutputError(const char * msg, ...)
{
// Initialize the arguments list
va_list args;
va_start(args, msg);
// Call the output function
OutputErrorImpl(msg, args);
// Finalize the arguments list
va_end(args);
}
} // Namespace:: SqMod
// --------------------------------------------------------------------------------------------
SQMOD_API_EXPORT unsigned int VcmpPluginInit(PluginFuncs* functions, PluginCallbacks* callbacks, PluginInfo* info)
// ------------------------------------------------------------------------------------------------
SQMOD_API_EXPORT unsigned int VcmpPluginInit(PluginFuncs * functions, PluginCallbacks * callbacks, PluginInfo * info)
{
using namespace SqMod;
// Output plugin header
// Output plug-in header
std::puts("");
OutputMessage("--------------------------------------------------------------------");
OutputMessage("Plugin: %s", SQJSON_NAME);
OutputMessage("Plug-in: %s", SQJSON_NAME);
OutputMessage("Author: %s", SQJSON_AUTHOR);
OutputMessage("Legal: %s", SQJSON_COPYRIGHT);
OutputMessage("--------------------------------------------------------------------");
std::puts("");
// Attempt to find the host plugin ID
int host_plugin_id = functions->FindPlugin((char *)(SQMOD_HOST_NAME));
// See if our plugin was loaded after the host plugin
// Attempt to find the host plug-in ID
const int host_plugin_id = functions->FindPlugin(SQMOD_HOST_NAME);
// See if our plug-in was loaded after the host plug-in
if (host_plugin_id < 0)
{
OutputError("%s could find the host plugin", SQJSON_NAME);
OutputError("%s could find the host plug-in", SQJSON_NAME);
// Don't load!
return SQMOD_FAILURE;
}
// Should never reach this point but just in case
else if (static_cast< Uint32 >(host_plugin_id) > info->pluginId)
{
OutputError("%s loaded after the host plugin", SQJSON_NAME);
OutputError("%s loaded after the host plug-in", SQJSON_NAME);
// Don't load!
return SQMOD_FAILURE;
}
@@ -299,15 +197,15 @@ SQMOD_API_EXPORT unsigned int VcmpPluginInit(PluginFuncs* functions, PluginCallb
_Func = functions;
_Clbk = callbacks;
_Info = info;
// Assign plugin version
// Assign plug-in version
_Info->pluginVersion = SQJSON_VERSION;
_Info->apiMajorVersion = PLUGIN_API_MAJOR;
_Info->apiMinorVersion = PLUGIN_API_MINOR;
// Assign the plugin name
// Assign the plug-in name
std::snprintf(_Info->name, sizeof(_Info->name), "%s", SQJSON_HOST_NAME);
// Bind callbacks
BindCallbacks();
// Notify that the plugin was successfully loaded
// Notify that the plug-in was successfully loaded
OutputMessage("Successfully loaded %s", SQJSON_NAME);
// Dummy spacing
std::puts("");

41
modules/json/Module.hpp
View File

@@ -1,41 +0,0 @@
#ifndef _SQJSON_MODULE_HPP_
#define _SQJSON_MODULE_HPP_
// ------------------------------------------------------------------------------------------------
#include "SqMod.h"
// ------------------------------------------------------------------------------------------------
namespace SqMod {
/* ------------------------------------------------------------------------------------------------
* Proxies to comunicate with the server.
*/
extern PluginFuncs* _Func;
extern PluginCallbacks* _Clbk;
extern PluginInfo* _Info;
/* ------------------------------------------------------------------------------------------------
* Proxies to comunicate with the Squirrel plugin.
*/
extern HSQAPI _SqAPI;
extern HSQEXPORTS _SqMod;
extern HSQUIRRELVM _SqVM;
/* ------------------------------------------------------------------------------------------------
* Output a message only if the _DEBUG was defined.
*/
void OutputDebug(const char * msg, ...);
/* ------------------------------------------------------------------------------------------------
* Output a formatted user message to the console.
*/
void OutputMessage(const char * msg, ...);
/* ------------------------------------------------------------------------------------------------
* Output a formatted error message to the console.
*/
void OutputError(const char * msg, ...);
} // Namespace:: SqMod
#endif // _SQJSON_MODULE_HPP_