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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* copyright --> */
#include "Util.h"
#include "DlAbortEx.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
string Util::itos(int value, bool comma) {
string str = llitos(value, comma);
return str;
}
string Util::llitos(long long int value, bool comma)
{
string str;
bool flag = false;
if(value < 0) {
flag = true;
value = -value;
} else if(value == 0) {
str = "0";
return str;
}
int count = 0;
while(value) {
++count;
char digit = value%10+'0';
str.insert(str.begin(), digit);
value /= 10;
if(comma && count > 3 && count%3 == 1) {
str.insert(str.begin()+1, ',');
}
}
if(flag) {
str.insert(str.begin(), '-');
}
return str;
}
string Util::trim(string src) {
string::size_type sp = src.find_first_not_of(" ");
string::size_type ep = src.find_last_not_of(" ");
if(sp == string::npos || ep == string::npos) {
return "";
} else {
return src.substr(sp, ep-sp+1);
}
}
void Util::split(pair<string, string>& hp, string src, char delim) {
hp.first = "";
hp.second = "";
string::size_type p = src.find(delim);
if(p == string::npos) {
hp.first = src;
hp.second = "";
} else {
hp.first = trim(src.substr(0, p));
hp.second = trim(src.substr(p+1));
}
}
long long int Util::difftv(struct timeval tv1, struct timeval tv2) {
if(tv1.tv_sec < tv2.tv_sec || tv1.tv_sec == tv2.tv_sec && tv1.tv_usec < tv2.tv_usec) {
return 0;
}
return ((tv1.tv_sec-tv2.tv_sec)*1000000+
tv1.tv_usec-tv2.tv_usec);
}
void Util::slice(vector<string>& result, string src, char delim) {
string::size_type p = 0;
while(1) {
string::size_type np = src.find(delim, p);
if(np == string::npos) {
string term = trim(src.substr(p));
if(term.size() > 0) {
result.push_back(term);
}
break;
}
string term = src.substr(p, np-p);
p = np+1;
result.push_back(trim(term));
}
}
bool Util::startsWith(string target, string part) {
if(target.size() < part.size()) {
return false;
}
if(part == "") {
return true;
}
if(target.find(part) == 0) {
return true;
} else {
return false;
}
}
bool Util::endsWith(string target, string part) {
if(target.size() < part.size()) {
return false;
}
if(part == "") {
return true;
}
if(target.rfind(part) == target.size()-part.size()) {
return true;
} else {
return false;
}
}
string Util::replace(string target, string oldstr, string newstr) {
if(target == "" || oldstr == "" ) {
return target;
}
string result;
string::size_type p = 0;
string::size_type np = target.find(oldstr);
while(np != string::npos) {
result += target.substr(p, np-p)+newstr;
p = np+oldstr.size();
np = target.find(oldstr, p);
}
result += target.substr(p);
return result;
}
string Util::urlencode(const unsigned char* target, int len) {
string dest;
for(int i = 0; i < len; i++) {
if(!('0' <= target[i] && target[i] <= '9' ||
'A' <= target[i] && target[i] <= 'Z' ||
'a' <= target[i] && target[i] <= 'z' ||
'$' == target[i] || '-' == target[i] ||
'_' == target[i] || '.' == target[i] ||
'+' == target[i] || '!' == target[i] ||
'*' == target[i] || '\'' == target[i] ||
'(' == target[i] || ')' == target[i] ||
',' == target[i])) {
char temp[4];
sprintf(temp, "%%%02x", target[i]);
temp[sizeof(temp)-1] = '\0';
dest.append(temp);
} else {
dest += target[i];
}
}
return dest;
}
string Util::toHex(const unsigned char* src, int len) {
char* temp = new char[len*2+1];
for(int i = 0; i < len; i++) {
sprintf(temp+i*2, "%02x", src[i]);
}
temp[len*2] = '\0';
string hex = temp;
delete [] temp;
return hex;
}
FILE* Util::openFile(string filename, string mode) {
FILE* file = fopen(filename.c_str(), mode.c_str());
return file;
}
void Util::rangedFileCopy(string dest, string src, long long int srcOffset, long long int length) {
int destFd;
if((destFd = open(dest.c_str(), O_CREAT|O_WRONLY|O_TRUNC, S_IRUSR|S_IWUSR)) < 0) {
throw new DlAbortEx(strerror(errno));
}
int srcFd;
if((srcFd = open(src.c_str(), O_RDONLY, S_IRUSR|S_IWUSR)) < 0) {
throw new DlAbortEx(strerror(errno));
}
if(lseek(srcFd, srcOffset, SEEK_SET) != srcOffset) {
throw new DlAbortEx(strerror(errno));
}
int BUF_SIZE = 16*1024;
char buf[BUF_SIZE];
int x = length/BUF_SIZE+(length%BUF_SIZE ? 1 : 0);
for(int i = 0; i < x; i++) {
int readLength;
if((readLength = read(srcFd, buf, BUF_SIZE)) == -1) {
throw new DlAbortEx(strerror(errno));
}
if(write(destFd, buf, readLength) == -1) {
throw new DlAbortEx(strerror(errno));
}
}
close(srcFd);
close(destFd);
}
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