vcpkg/toolsrc/src/vcpkg_Strings.cpp

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#include "pch.h"
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#include "vcpkg_Strings.h"
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#include "vcpkg_Util.h"
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namespace vcpkg::Strings::details
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{
// To disambiguate between two overloads
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static const auto isspace = [](const char c)
{
return std::isspace(c);
};
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// Avoids C4244 warnings because of char<->int conversion that occur when using std::tolower()
static char tolower_char(const char c)
{
return static_cast<char>(std::tolower(c));
}
static _locale_t& c_locale()
{
static _locale_t c_locale_impl = _create_locale(LC_ALL, "C");
return c_locale_impl;
}
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std::string format_internal(const char* fmtstr, ...)
{
va_list lst;
va_start(lst, fmtstr);
const int sz = _vscprintf_l(fmtstr, c_locale(), lst);
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std::string output(sz, '\0');
_vsnprintf_s_l(&output[0], output.size() + 1, output.size() + 1, fmtstr, c_locale(), lst);
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va_end(lst);
return output;
}
std::wstring wformat_internal(const wchar_t* fmtstr, ...)
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{
va_list lst;
va_start(lst, fmtstr);
const int sz = _vscwprintf_l(fmtstr, c_locale(), lst);
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std::wstring output(sz, '\0');
_vsnwprintf_s_l(&output[0], output.size() + 1, output.size() + 1, fmtstr, c_locale(), lst);
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va_end(lst);
return output;
}
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}
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namespace vcpkg::Strings
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{
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std::wstring utf8_to_utf16(const CStringView s)
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{
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t> conversion;
return conversion.from_bytes(s);
}
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std::string utf16_to_utf8(const CWStringView w)
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{
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t> conversion;
return conversion.to_bytes(w);
}
std::string::const_iterator case_insensitive_ascii_find(const std::string& s, const std::string& pattern)
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{
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const std::string pattern_as_lower_case(ascii_to_lowercase(pattern));
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return search(s.begin(), s.end(), pattern_as_lower_case.begin(), pattern_as_lower_case.end(), [](const char a, const char b)
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{
return details::tolower_char(a) == b;
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});
}
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std::string ascii_to_lowercase(const std::string& input)
{
std::string output(input);
std::transform(output.begin(), output.end(), output.begin(), &details::tolower_char);
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return output;
}
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void trim(std::string* s)
{
s->erase(std::find_if_not(s->rbegin(), s->rend(), details::isspace).base(), s->end());
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s->erase(s->begin(), std::find_if_not(s->begin(), s->end(), details::isspace));
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}
std::string trimmed(const std::string& s)
{
auto whitespace_back = std::find_if_not(s.rbegin(), s.rend(), details::isspace).base();
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auto whitespace_front = std::find_if_not(s.begin(), whitespace_back, details::isspace);
return std::string(whitespace_front, whitespace_back);
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}
void trim_all_and_remove_whitespace_strings(std::vector<std::string>* strings)
{
for (std::string& s : *strings)
{
trim(&s);
}
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Util::keep_if(*strings, [](const std::string& s)-> bool
{
return s != "";
});
}
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std::vector<std::string> split(const std::string& s, const std::string& delimiter)
{
std::vector<std::string> output;
size_t i = 0;
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for (size_t pos = s.find(delimiter); pos != std::string::npos; pos = s.find(delimiter, pos))
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{
output.push_back(s.substr(i, pos - i));
i = ++pos;
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}
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// Add the rest of the string after the last delimiter, unless there is nothing after it
if (i != s.length())
{
output.push_back(s.substr(i, s.length()));
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}
return output;
}
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}