VWeb/Source/StringUtils.cpp

88 lines
2.3 KiB
C++

#include "StringUtils.h"
#include <algorithm>
#include <sstream>
namespace VWeb {
static void StringLeftTrim(std::string &s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](unsigned char ch) {
return !std::isspace(ch);
}));
}
static void StringRightTrim(std::string &s) {
s.erase(std::find_if(s.rbegin(), s.rend(),
[](unsigned char ch) { return !std::isspace(ch); })
.base(),
s.end());
}
std::vector<std::string> String::Split(const std::string &s,
const std::string &delimiter,
int limit) {
size_t pos_start = 0, pos_end, delim_len = delimiter.length();
std::string token;
std::vector<std::string> res;
while ((pos_end = s.find(delimiter, pos_start)) != std::string::npos &&
(limit == -1 || res.size() < (size_t)limit)) {
token = s.substr(pos_start, pos_end - pos_start);
pos_start = pos_end + delim_len;
res.push_back(token);
}
res.push_back(s.substr(pos_start));
return res;
}
int String::ToNumber(std::string &string, int def) {
char *pEnd;
long val = std::strtol(string.c_str(), &pEnd, 10);
if (pEnd == string)
return def;
return (int)val;
}
std::string String::Join(const std::vector<std::string> &items,
const std::string &delimiter) {
std::stringstream string;
for (size_t i = 0; i < items.size(); ++i) {
if (i != 0)
string << delimiter;
string << items[i];
}
return string.str();
}
void String::Trim(std::string &value) {
StringLeftTrim(value);
StringRightTrim(value);
}
std::string String::TrimCopy(const std::string &value) {
auto val = value;
Trim(val);
return val;
}
void String::ToLowerCase(std::string &value) {
std::transform(value.begin(), value.end(), value.begin(),
[](unsigned char c) { return std::tolower(c); });
}
std::string String::UrlDecode(const std::string &val) {
std::string ret;
char ch;
size_t i;
unsigned int ii;
for (i = 0; i < val.length(); i++) {
if (int(val[i]) == 37) {
char *pEnd;
ii = std::strtoul(val.substr(i + 1, 2).c_str(), &pEnd, 16);
ch = static_cast<char>(ii);
ret += ch;
i = i + 2;
} else
ret += val[i];
}
return (ret);
}
} // namespace VWeb