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Added love.isVersionCompatible. Returns true if the running version of love is compatible with the specified version.

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This commit is contained in:
Alex Szpakowski
2015-03-13 19:26:09 -03:00
parent a119e6a862
commit 44b9efb43e
3 changed files with 52 additions and 19 deletions
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src/modules/love/love.cpp
+48 -1
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@@ -25,6 +25,10 @@
#include "love.h"
// C
#include <cstdio>
#include <cstring>
#ifdef LOVE_WINDOWS
#include <windows.h>
#endif // LOVE_WINDOWS
@@ -198,6 +202,46 @@ static int w_love_getVersion(lua_State *L)
return 4;
}
static int w_love_isVersionCompatible(lua_State *L)
{
const char *version = nullptr;
char versionbuffer[64] = {0};
if (lua_type(L, 1) == LUA_TSTRING)
version = luaL_checkstring(L, 1);
else
{
int major = luaL_checkint(L, 1);
int minor = luaL_checkint(L, 2);
int rev = luaL_checkint(L, 3);
// Convert the numbers to a string, since VERSION_COMPATIBILITY is an
// array of version strings.
if (snprintf(versionbuffer, 64, "%d.%d.%d", major, minor, rev) < 0)
{
lua_pushboolean(L, false);
return 1;
}
version = versionbuffer;
}
if (version != nullptr)
{
for (int i = 0; love::VERSION_COMPATIBILITY[i] != nullptr; i++)
{
if (strcmp(version, love::VERSION_COMPATIBILITY[i]) != 0)
continue;
lua_pushboolean(L, true);
return 1;
}
}
lua_pushboolean(L, false);
return 1;
}
int luaopen_love(lua_State * L)
{
love::luax_insistglobal(L, "love");
@@ -228,7 +272,7 @@ int luaopen_love(lua_State * L)
lua_newtable(L);
for (int i = 0; love::VERSION_COMPATIBILITY[i] != 0; ++i)
for (int i = 0; love::VERSION_COMPATIBILITY[i] != nullptr; i++)
{
lua_pushstring(L, love::VERSION_COMPATIBILITY[i]);
lua_rawseti(L, -2, i+1);
@@ -239,6 +283,9 @@ int luaopen_love(lua_State * L)
lua_pushcfunction(L, w_love_getVersion);
lua_setfield(L, -2, "getVersion");
lua_pushcfunction(L, w_love_isVersionCompatible);
lua_setfield(L, -2, "isVersionCompatible");
#ifdef LOVE_WINDOWS
lua_pushstring(L, "Windows");
#elif defined(LOVE_MACOSX)