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ofUtils.cpp
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ofUtils.cpp
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#include "ofUtils.h"
#include "ofImage.h"
#include "ofTypes.h"
#include "ofGraphics.h"
#include "ofAppRunner.h"
#include "Poco/String.h"
#include "Poco/LocalDateTime.h"
#include "Poco/DateTimeFormatter.h"
#include <cctype> // for toupper
#ifdef TARGET_WIN32
#ifndef _MSC_VER
#include <unistd.h> // this if for MINGW / _getcwd
#endif
#endif
#if defined(TARGET_OF_IPHONE) || defined(TARGET_OSX ) || defined(TARGET_LINUX)
#include <sys/time.h>
#endif
#ifdef TARGET_OSX
#ifndef TARGET_OF_IPHONE
#include <mach-o/dyld.h>
#include <sys/param.h> // for MAXPATHLEN
#endif
#endif
#ifdef TARGET_WIN32
#include <mmsystem.h>
#ifdef _MSC_VER
#include <direct.h>
#endif
#endif
static bool enableDataPath = true;
static unsigned long startTime = ofGetSystemTime(); // better at the first frame ?? (currently, there is some delay from static init, to running.
static unsigned long startTimeMicros = ofGetSystemTimeMicros();
//--------------------------------------
unsigned long ofGetElapsedTimeMillis(){
return ofGetSystemTime() - startTime;
}
//--------------------------------------
unsigned long ofGetElapsedTimeMicros(){
return ofGetSystemTimeMicros() - startTimeMicros;
}
//--------------------------------------
float ofGetElapsedTimef(){
return ofGetElapsedTimeMicros() / 1000000.0f;
}
//--------------------------------------
void ofResetElapsedTimeCounter(){
startTime = ofGetSystemTime();
startTimeMicros = ofGetSystemTimeMicros();
}
//=======================================
// this is from freeglut, and used internally:
/* Platform-dependent time in milliseconds, as an unsigned 32-bit integer.
* This value wraps every 49.7 days, but integer overflows cancel
* when subtracting an initial start time, unless the total time exceeds
* 32-bit, where the GLUT API return value is also overflowed.
*/
unsigned long ofGetSystemTime( ) {
#ifndef TARGET_WIN32
struct timeval now;
gettimeofday( &now, NULL );
return now.tv_usec/1000 + now.tv_sec*1000;
#else
#if defined(_WIN32_WCE)
return GetTickCount();
#else
return timeGetTime();
#endif
#endif
}
unsigned long ofGetSystemTimeMicros( ) {
#ifndef TARGET_WIN32
struct timeval now;
gettimeofday( &now, NULL );
return now.tv_usec + now.tv_sec*1000000;
#else
#if defined(_WIN32_WCE)
return GetTickCount()*1000;
#else
return timeGetTime()*1000;
#endif
#endif
}
//--------------------------------------------------
unsigned int ofGetUnixTime(){
return (unsigned int)time(NULL);
}
//default ofGetTimestampString returns in this format: 2011-01-15-18-29-35-299
//--------------------------------------------------
string ofGetTimestampString(){
string timeFormat = "%Y-%m-%d-%H-%M-%S-%i";
Poco::LocalDateTime now;
return Poco::DateTimeFormatter::format(now, timeFormat);
}
//specify the string format - eg: %Y-%m-%d-%H-%M-%S-%i ( 2011-01-15-18-29-35-299 )
//--------------------------------------------------
string ofGetTimestampString(string timestampFormat){
Poco::LocalDateTime now;
return Poco::DateTimeFormatter::format(now, timestampFormat);
}
//--------------------------------------------------
int ofGetSeconds(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
return local.tm_sec;
}
//--------------------------------------------------
int ofGetMinutes(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
return local.tm_min;
}
//--------------------------------------------------
int ofGetHours(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
return local.tm_hour;
}
//--------------------------------------------------
int ofGetYear(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
int year = local.tm_year + 1900;
return year;
}
//--------------------------------------------------
int ofGetMonth(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
int month = local.tm_mon + 1;
return month;
}
//--------------------------------------------------
int ofGetDay(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
return local.tm_mday;
}
//--------------------------------------------------
int ofGetWeekday(){
time_t curr;
tm local;
time(&curr);
local =*(localtime(&curr));
return local.tm_wday;
}
//--------------------------------------------------
void ofEnableDataPath(){
enableDataPath = true;
}
//--------------------------------------------------
void ofDisableDataPath(){
enableDataPath = false;
}
//--------------------------------------------------
string defaultDataPath(){
#if defined TARGET_OSX
return string("../../../data/");
#elif defined TARGET_ANDROID
return string("sdcard/");
#elif defined(TARGET_LINUX)
return string(ofFilePath::join(ofFilePath::getCurrentExeDir(), "data/"));
#else
return string("data/");
#endif
}
//--------------------------------------------------
static Poco::Path & defaultWorkingDirectory(){
static Poco::Path defaultWorkingDirectory;
return defaultWorkingDirectory;
}
//--------------------------------------------------
static Poco::Path & dataPathRoot(){
static Poco::Path dataPathRoot(defaultDataPath());
return dataPathRoot;
}
//--------------------------------------------------
Poco::Path getWorkingDir(){
char charWorkingDir[MAXPATHLEN];
getcwd(charWorkingDir, MAXPATHLEN);
return Poco::Path(charWorkingDir);
}
//--------------------------------------------------
void ofSetWorkingDirectoryToDefault(){
#ifdef TARGET_OSX
#ifndef TARGET_OF_IPHONE
string newPath = "";
char path[MAXPATHLEN];
uint32_t size = sizeof(path);
if (_NSGetExecutablePath(path, &size) == 0){
Poco::Path classPath(path);
classPath.makeParent();
chdir( classPath.toString().c_str() );
}else{
ofLog(OF_LOG_FATAL_ERROR, "buffer too small; need size %u\n", size);
}
#endif
#endif
defaultWorkingDirectory() = getWorkingDir();
defaultWorkingDirectory().makeAbsolute();
}
//--------------------------------------------------
void ofSetDataPathRoot(string newRoot){
dataPathRoot() = Poco::Path(newRoot);
}
//--------------------------------------------------
string ofToDataPath(string path, bool makeAbsolute){
if (!enableDataPath)
return path;
// if our Current Working Directory has changed (e.g. file open dialog)
if (defaultWorkingDirectory().toString() != getWorkingDir().toString()) {
// change our cwd back to where it was on app load
chdir(defaultWorkingDirectory().toString().c_str());
}
// this could be performed here, or wherever we might think we accidentally change the cwd, e.g. after file dialogs on windows
Poco::Path const & dataPath(dataPathRoot());
Poco::Path inputPath(path);
Poco::Path outputPath;
// if path is already absolute, just return it
if (inputPath.isAbsolute()) {
return path;
}
// here we check whether path already refers to the data folder by looking for common elements
// if the path begins with the full contents of dataPathRoot then the data path has already been added
// we compare inputPath.toString() rather that the input var path to ensure common formatting against dataPath.toString()
string strippedDataPath = dataPath.toString();
// also, we strip the trailing slash from dataPath since `path` may be input as a file formatted path even if it is a folder (i.e. missing trailing slash)
strippedDataPath.resize(strippedDataPath.length() - 1);
if (inputPath.toString().find(strippedDataPath) != 0) {
// inputPath doesn't contain data path already, so we build the output path as the inputPath relative to the dataPath
outputPath = dataPath;
outputPath.resolve(inputPath);
} else {
// inputPath already contains data path, so no need to change
outputPath = inputPath;
}
// finally, if we do want an absolute path and we don't already have one
if (makeAbsolute) {
// then we return the absolute form of the path
return outputPath.absolute().toString();
} else {
// or output the relative path
return outputPath.toString();
}
}
//----------------------------------------
template <>
string ofToHex(const string& value) {
ostringstream out;
// how many bytes are in the string
int numBytes = value.size();
for(int i = 0; i < numBytes; i++) {
// print each byte as a 2-character wide hex value
out << setfill('0') << setw(2) << hex << (unsigned int) ((unsigned char)value[i]);
}
return out.str();
}
//----------------------------------------
string ofToHex(const char* value) {
// this function is necessary if you want to print a string
// using a syntax like ofToHex("test")
return ofToHex((string) value);
}
//----------------------------------------
int ofToInt(const string& intString) {
int x = 0;
istringstream cur(intString);
cur >> x;
return x;
}
//----------------------------------------
int ofHexToInt(const string& intHexString) {
int x = 0;
istringstream cur(intHexString);
cur >> hex >> x;
return x;
}
//----------------------------------------
char ofHexToChar(const string& charHexString) {
int x = 0;
istringstream cur(charHexString);
cur >> hex >> x;
return (char) x;
}
//----------------------------------------
float ofHexToFloat(const string& floatHexString) {
union intFloatUnion {
int x;
float f;
} myUnion;
myUnion.x = 0;
istringstream cur(floatHexString);
cur >> hex >> myUnion.x;
return myUnion.f;
}
//----------------------------------------
string ofHexToString(const string& stringHexString) {
stringstream out;
stringstream stream(stringHexString);
// a hex string has two characters per byte
int numBytes = stringHexString.size() / 2;
for(int i = 0; i < numBytes; i++) {
string curByte;
// grab two characters from the hex string
stream >> setw(2) >> curByte;
// prepare to parse the two characters
stringstream curByteStream(curByte);
int cur = 0;
// parse the two characters as a hex-encoded int
curByteStream >> hex >> cur;
// add the int as a char to our output stream
out << (char) cur;
}
return out.str();
}
//----------------------------------------
float ofToFloat(const string& floatString) {
float x = 0;
istringstream cur(floatString);
cur >> x;
return x;
}
//----------------------------------------
bool ofToBool(const string& boolString) {
static const string trueString = "true";
static const string falseString = "false";
string lower = Poco::toLower(boolString);
if(lower == trueString) {
return true;
}
if(lower == falseString) {
return false;
}
bool x = false;
istringstream cur(lower);
cur >> x;
return x;
}
//----------------------------------------
char ofToChar(const string& charString) {
char x = '\0';
istringstream cur(charString);
cur >> x;
return x;
}
//----------------------------------------
template <> string ofToBinary(const string& value) {
stringstream out;
int numBytes = value.size();
for(int i = 0; i < numBytes; i++) {
bitset<8> bitBuffer(value[i]);
out << bitBuffer;
}
return out.str();
}
//----------------------------------------
string ofToBinary(const char* value) {
// this function is necessary if you want to print a string
// using a syntax like ofToBinary("test")
return ofToBinary((string) value);
}
//----------------------------------------
int ofBinaryToInt(const string& value) {
const int intSize = sizeof(int) * 8;
bitset<intSize> binaryString(value);
return (int) binaryString.to_ulong();
}
//----------------------------------------
char ofBinaryToChar(const string& value) {
const int charSize = sizeof(char) * 8;
bitset<charSize> binaryString(value);
return (char) binaryString.to_ulong();
}
//----------------------------------------
float ofBinaryToFloat(const string& value) {
const int floatSize = sizeof(float) * 8;
bitset<floatSize> binaryString(value);
union ulongFloatUnion {
unsigned long result;
float f;
} myUFUnion;
myUFUnion.result = binaryString.to_ulong();
return myUFUnion.f;
}
//----------------------------------------
string ofBinaryToString(const string& value) {
ostringstream out;
stringstream stream(value);
bitset<8> byteString;
int numBytes = value.size() / 8;
for(int i = 0; i < numBytes; i++) {
stream >> byteString;
out << (char) byteString.to_ulong();
}
return out.str();
}
//--------------------------------------------------
vector <string> ofSplitString(const string & source, const string & delimiter, bool ignoreEmpty, bool trim) {
vector<string> result;
if (delimiter.empty()) {
result.push_back(source);
return result;
}
string::const_iterator substart = source.begin(), subend;
while (true) {
subend = search(substart, source.end(), delimiter.begin(), delimiter.end());
string sub(substart, subend);
if(trim) {
Poco::trimInPlace(sub);
}
if (!ignoreEmpty || !sub.empty()) {
result.push_back(sub);
}
if (subend == source.end()) {
break;
}
substart = subend + delimiter.size();
}
return result;
}
//--------------------------------------------------
string ofJoinString(vector <string> stringElements, const string & delimiter){
string resultString = "";
int numElements = stringElements.size();
for(int k = 0; k < numElements; k++){
if( k < numElements-1 ){
resultString += stringElements[k] + delimiter;
} else {
resultString += stringElements[k];
}
}
return resultString;
}
//--------------------------------------------------
void ofStringReplace(string& input, string searchStr, string replaceStr){
size_t uPos = 0;
size_t uFindLen = searchStr.length();
size_t uReplaceLen = replaceStr.length();
if( uFindLen == 0 ){
return;
}
for( ;(uPos = input.find( searchStr, uPos )) != std::string::npos; ){
input.replace( uPos, uFindLen, replaceStr );
uPos += uReplaceLen;
}
}
//--------------------------------------------------
bool ofIsStringInString(string haystack, string needle){
return ( strstr(haystack.c_str(), needle.c_str() ) != NULL );
}
//--------------------------------------------------
string ofToLower(const string & src){
string dst(src);
transform(src.begin(),src.end(),dst.begin(),::tolower);
return dst;
}
//--------------------------------------------------
string ofToUpper(const string & src){
string dst(src);
transform(src.begin(),src.end(),dst.begin(),::toupper);
return dst;
}
//--------------------------------------------------
string ofVAArgsToString(const char * format, ...){
// variadic args to string:
// http://www.codeproject.com/KB/string/string_format.aspx
static char aux_buffer[10000];
string retStr("");
if (NULL != format){
va_list marker;
// initialize variable arguments
va_start(marker, format);
// Get formatted string length adding one for NULL
size_t len = vsprintf(aux_buffer, format, marker) + 1;
// Reset variable arguments
va_end(marker);
if (len > 0)
{
va_list args;
// initialize variable arguments
va_start(args, format);
// Create a char vector to hold the formatted string.
vector<char> buffer(len, '\0');
vsprintf(&buffer[0], format, args);
retStr = &buffer[0];
va_end(args);
}
}
return retStr;
}
string ofVAArgsToString(const char * format, va_list args){
// variadic args to string:
// http://www.codeproject.com/KB/string/string_format.aspx
char aux_buffer[10000];
string retStr("");
if (NULL != format){
// Get formatted string length adding one for NULL
vsprintf(aux_buffer, format, args);
retStr = aux_buffer;
}
return retStr;
}
//--------------------------------------------------
void ofLaunchBrowser(string url){
// http://support.microsoft.com/kb/224816
//make sure it is a properly formatted url
if(Poco::icompare(url.substr(0,7), "http://") != 0 &&
Poco::icompare(url.substr(0,8), "https://") != 0) {
ofLog(OF_LOG_WARNING, "ofLaunchBrowser: url must begin http:// or https://");
return;
}
//----------------------------
#ifdef TARGET_WIN32
//----------------------------
#if (_MSC_VER)
// microsoft visual studio yaks about strings, wide chars, unicode, etc
ShellExecuteA(NULL, "open", url.c_str(),
NULL, NULL, SW_SHOWNORMAL);
#else
ShellExecute(NULL, "open", url.c_str(),
NULL, NULL, SW_SHOWNORMAL);
#endif
//----------------------------
#endif
//----------------------------
//--------------------------------------
#ifdef TARGET_OSX
//--------------------------------------
// ok gotta be a better way then this,
// this is what I found...
string commandStr = "open "+url;
system(commandStr.c_str());
//----------------------------
#endif
//----------------------------
//--------------------------------------
#ifdef TARGET_LINUX
//--------------------------------------
string commandStr = "xdg-open "+url;
int ret = system(commandStr.c_str());
if(ret!=0) ofLog(OF_LOG_ERROR,"ofLaunchBrowser: couldn't open browser");
//----------------------------
#endif
//----------------------------
}
//--------------------------------------------------
string ofGetVersionInfo(){
string version;
stringstream sstr;
sstr << "of version: " << OF_VERSION << endl;
return sstr.str();
}
//---- new to 006
//from the forums http://www.openframeworks.cc/forum/viewtopic.php?t=1413
//--------------------------------------------------
void ofSaveScreen(string filename) {
ofImage screen;
screen.allocate(ofGetWidth(), ofGetHeight(), OF_IMAGE_COLOR);
screen.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
screen.saveImage(filename);
}
//--------------------------------------------------
void ofSaveViewport(string filename) {
// because ofSaveScreen doesn't related to viewports
ofImage screen;
ofRectangle view = ofGetCurrentViewport();
screen.allocate(view.width, view.height, OF_IMAGE_COLOR);
screen.grabScreen(0, 0, view.width, view.height);
screen.saveImage(filename);
}
//--------------------------------------------------
int saveImageCounter = 0;
void ofSaveFrame(bool bUseViewport){
string fileName = ofToString(saveImageCounter) + ".png";
if (bUseViewport){
ofSaveViewport(fileName);
} else {
ofSaveScreen(fileName);
}
saveImageCounter++;
}
//--------------------------------------------------
string ofSystem(string command){
FILE * ret = NULL;
#ifdef TARGET_WIN32
ret = _popen(command.c_str(),"r");
#else
ret = popen(command.c_str(),"r");
#endif
string strret;
char c;
if (ret == NULL){
ofLogError() << "ofSystem: error opening return file";
}else{
do {
c = fgetc (ret);
strret += c;
} while (c != EOF);
fclose (ret);
}
return strret;
}
//--------------------------------------------------
ofTargetPlatform ofGetTargetPlatform(){
#ifdef TARGET_LINUX
if(ofSystem("uname -m").find("x86_64")==0)
return OF_TARGET_LINUX64;
else
return OF_TARGET_LINUX;
#elif defined(TARGET_OSX)
return OF_TARGET_OSX;
#elif defined(TARGET_WIN32)
#if (_MSC_VER)
return OF_TARGET_WINVS;
#else
return OF_TARGET_WINGCC;
#endif
#elif defined(TARGET_ANDROID)
return OF_TARGET_ANDROID;
#elif defined(TARGET_OF_IPHONE)
return OF_TARGET_IPHONE;
#endif
}