bgfx/examples/common/entry/cmd.cpp

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/*
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* Copyright 2010-2014 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
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#include <ctype.h> // isspace
#include <stdint.h>
#include <stdlib.h> // size_t
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#include <string.h> // strlen
#include <bx/hash.h>
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#include <bx/tokenizecmd.h>
#include "dbg.h"
#include "cmd.h"
#include <string>
#include <unordered_map>
struct CmdContext
{
CmdContext()
{
}
~CmdContext()
{
}
void add(const char* _name, ConsoleFn _fn, void* _userData)
{
uint32_t cmd = bx::hashMurmur2A(_name, (uint32_t)strlen(_name) );
BX_CHECK(m_lookup.end() == m_lookup.find(cmd), "Command \"%s\" already exist.", _name);
Func fn = { _fn, _userData };
m_lookup.insert(std::make_pair(cmd, fn) );
}
void exec(const char* _cmd)
{
for (const char* next = _cmd; '\0' != *next; _cmd = next)
{
char commandLine[1024];
uint32_t size = sizeof(commandLine);
int argc;
char* argv[64];
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next = bx::tokenizeCommandLine(_cmd, commandLine, size, argc, argv, BX_COUNTOF(argv), '\n');
if (argc > 0)
{
int err = -1;
uint32_t cmd = bx::hashMurmur2A(argv[0], (uint32_t)strlen(argv[0]) );
CmdLookup::iterator it = m_lookup.find(cmd);
if (it != m_lookup.end() )
{
Func& fn = it->second;
err = fn.m_fn(this, fn.m_userData, argc, argv);
}
switch (err)
{
case 0:
break;
case -1:
{
std::string tmp(_cmd, next-_cmd - (*next == '\0' ? 0 : 1) );
DBG("Command '%s' doesn't exist.", tmp.c_str() );
}
break;
default:
{
std::string tmp(_cmd, next-_cmd - (*next == '\0' ? 0 : 1) );
DBG("Failed '%s' err: %d.", tmp.c_str(), err);
}
break;
}
}
}
}
struct Func
{
ConsoleFn m_fn;
void* m_userData;
};
typedef std::unordered_map<uint32_t, Func> CmdLookup;
CmdLookup m_lookup;
};
static CmdContext s_cmdContext;
void cmdAdd(const char* _name, ConsoleFn _fn, void* _userData)
{
s_cmdContext.add(_name, _fn, _userData);
}
void cmdExec(const char* _cmd)
{
s_cmdContext.exec(_cmd);
}