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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "System/Util.h"
#if defined(_MSC_VER) && (_MSC_VER >= 1310)
#include <intrin.h>
#endif
#include <cstring>
std::string StringReplace(const std::string& text,
const std::string& from,
const std::string& to)
{
std::string working = text;
std::string::size_type pos = 0;
while (true) {
pos = working.find(from, pos);
if (pos == std::string::npos) {
break;
}
std::string tmp = working.substr(0, pos);
tmp += to;
tmp += working.substr(pos + from.size(), std::string::npos);
pos += to.size();
working = tmp;
}
return working;
}
/// @see http://www.codeproject.com/KB/stl/stdstringtrim.aspx
void StringTrimInPlace(std::string& str)
{
static const std::string whiteSpaces(" \t\n\r");
std::string::size_type pos = str.find_last_not_of(whiteSpaces);
if (pos != std::string::npos) {
str.erase(pos + 1);
pos = str.find_first_not_of(whiteSpaces);
if (pos != std::string::npos) {
str.erase(0, pos);
}
} else {
str.erase(str.begin(), str.end());
}
}
std::string StringTrim(const std::string& str)
{
std::string copy(str);
StringTrimInPlace(copy);
return copy;
}
bool StringToBool(std::string str)
{
bool value = true;
StringTrimInPlace(str);
StringToLowerInPlace(str);
// regex would probably be more appropriate,
// but it is better not to rely on any external lib here
if (
(str == "n") ||
(str == "no") ||
(str == "f") ||
(str == "false") ||
(str == "0")
) {
value = false;
}
return value;
}
bool StringStartsWith(const std::string& str, const char* prefix)
{
if ((prefix == NULL) || (str.size() < strlen(prefix))) {
return false;
} else {
return (str.compare(0, strlen(prefix), prefix) == 0);
}
}
bool StringEndsWith(const std::string& str, const char* postfix)
{
if ((postfix == NULL) || (str.size() < strlen(postfix))) {
return false;
} else {
return (str.compare(str.size() - strlen(postfix), str.size(), postfix) == 0);
}
}
#if (!defined DEDICATED || defined _MSC_VER) && !defined UNITSYNC && !defined BUILDING_AI
namespace proc {
#if defined(__GNUC__)
// function inlining breaks this
__attribute__((__noinline__))
void ExecCPUID(unsigned int* a, unsigned int* b, unsigned int* c, unsigned int* d)
{
#ifndef __APPLE__
__asm__ __volatile__(
"cpuid"
: "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d)
: "0" (*a)
);
#else
#ifdef __x86_64__
__asm__ __volatile__(
"pushq %%rbx\n\t"
"cpuid\n\t"
"movl %%ebx, %1\n\t"
"popq %%rbx"
: "=a" (*a), "=r" (*b), "=c" (*c), "=d" (*d)
: "0" (*a)
);
#else
__asm__ __volatile__(
"pushl %%ebx\n\t"
"cpuid\n\t"
"movl %%ebx, %1\n\t"
"popl %%ebx"
: "=a" (*a), "=r" (*b), "=c" (*c), "=d" (*d)
: "0" (*a)
);
#endif
#endif
}
#elif defined(_MSC_VER) && (_MSC_VER >= 1310)
void ExecCPUID(unsigned int* a, unsigned int* b, unsigned int* c, unsigned int* d)
{
int features[4];
__cpuid(features, *a);
*a=features[0];
*b=features[1];
*c=features[2];
*d=features[3];
}
#else
// no-op on other compilers
void ExecCPUID(unsigned int* a, unsigned int* b, unsigned int* c, unsigned int* d)
{
}
#endif
unsigned int GetProcMaxStandardLevel()
{
unsigned int rEAX = 0x00000000;
unsigned int rEBX = 0;
unsigned int rECX = 0;
unsigned int rEDX = 0;
ExecCPUID(&rEAX, &rEBX, &rECX, &rEDX);
return rEAX;
}
unsigned int GetProcMaxExtendedLevel()
{
unsigned int rEAX = 0x80000000;
unsigned int rEBX = 0;
unsigned int rECX = 0;
unsigned int rEDX = 0;
ExecCPUID(&rEAX, &rEBX, &rECX, &rEDX);
return rEAX;
}
unsigned int GetProcSSEBits()
{
unsigned int rEAX = 0;
unsigned int rEBX = 0;
unsigned int rECX = 0;
unsigned int rEDX = 0;
unsigned int bits = 0;
if (GetProcMaxStandardLevel() >= 0x00000001U) {
rEAX = 0x00000001U; ExecCPUID(&rEAX, &rEBX, &rECX, &rEDX);
int SSE42 = (rECX >> 20) & 1; bits |= ( SSE42 << 0); // SSE 4.2
int SSE41 = (rECX >> 19) & 1; bits |= ( SSE41 << 1); // SSE 4.1
int SSSE30 = (rECX >> 9) & 1; bits |= (SSSE30 << 2); // Supplemental SSE 3.0
int SSE30 = (rECX >> 0) & 1; bits |= ( SSE30 << 3); // SSE 3.0
int SSE20 = (rEDX >> 26) & 1; bits |= ( SSE20 << 4); // SSE 2.0
int SSE10 = (rEDX >> 25) & 1; bits |= ( SSE10 << 5); // SSE 1.0
int MMX = (rEDX >> 23) & 1; bits |= ( MMX << 6); // MMX
}
if (GetProcMaxExtendedLevel() >= 0x80000001U) {
rEAX = 0x80000001U; ExecCPUID(&rEAX, &rEBX, &rECX, &rEDX);
int SSE50A = (rECX >> 11) & 1; bits |= (SSE50A << 7); // SSE 5.0A
int SSE40A = (rECX >> 6) & 1; bits |= (SSE40A << 8); // SSE 4.0A
int MSSE = (rECX >> 7) & 1; bits |= (MSSE << 9); // Misaligned SSE
}
return bits;
}
}
#endif
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