AuroraMiddleware/AuroraOpenALSoft
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Let alIsExtensionPresent work with mixed-case extension names

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This commit is contained in:
Chris Robinson 2008-01-14 16:26:22 -08:00
parent df07e8a65b
commit a2e2522612
1 changed files with 14 additions and 17 deletions
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31
OpenAL32/alExtension.c
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@ -303,7 +303,8 @@ ALAPI ALboolean ALAPIENTRY alIsExtensionPresent(const ALchar *extName)
{
ALboolean bIsSupported = AL_FALSE;
ALCcontext *pContext;
char *ptr, *ext;
const char *ptr;
size_t len;
if (!extName)
{
@ -318,32 +319,28 @@ ALAPI ALboolean ALAPIENTRY alIsExtensionPresent(const ALchar *extName)
return AL_FALSE;
}
ext = strdup(extName);
ptr = ext;
do {
*ptr = (char)toupper(*ptr);
} while(*(ptr++));
SuspendContext(pContext);
len = strlen(extName);
ptr = pContext->ExtensionList;
while((ptr=strstr(ptr, ext)) != NULL)
while(ptr && *ptr)
{
if(ptr == pContext->ExtensionList || ptr[-1] == ' ')
if(strncasecmp(ptr, extName, len) == 0 &&
(ptr[len] == '\0' || isspace(ptr[len])))
{
char e = ptr[strlen(ext)];
if(e == ' ' || e == 0)
{
bIsSupported = AL_TRUE;
break;
}
bIsSupported = AL_TRUE;
break;
}
if((ptr=strchr(ptr, ' ')) != NULL)
{
do {
++ptr;
} while(isspace(*ptr));
}
ptr++;
}
ProcessContext(pContext);
free(ext);
return bIsSupported;
}