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#include "string.hh"
#include "exception.hh"
#include "utf8_iterator.hh"
namespace Kakoune
{
std::vector<String> split(const String& str, char separator, char escape)
{
auto begin = str.begin();
auto end = str.begin();
std::vector<String> res;
while (end != str.end())
{
res.emplace_back();
String& element = res.back();
while (end != str.end())
{
auto c = *end;
if (c == escape and end + 1 != end and *(end+1) == separator)
{
element += separator;
end += 2;
}
else if (c == separator)
{
++end;
break;
}
else
{
element += c;
++end;
}
}
begin = end;
}
return res;
}
String escape(const String& str, char character, char escape)
{
String res;
for (auto& c : str)
{
if (c == character)
res += escape;
res += c;
}
return res;
}
int str_to_int(const String& str)
{
int res = 0;
if (sscanf(str.c_str(), "%i", &res) != 1)
throw runtime_error(str + "is not a number");
return res;
}
String to_string(int val)
{
char buf[16];
sprintf(buf, "%i", val);
return buf;
}
String option_to_string(const Regex& re)
{
return String{re.str()};
}
void option_from_string(const String& str, Regex& re)
{
try
{
re = Regex{str.begin(), str.end()};
}
catch (boost::regex_error& err)
{
throw runtime_error("unable to create regex: "_str + err.what());
}
}
bool prefix_match(StringView str, StringView prefix)
{
auto it = str.begin();
for (auto& c : prefix)
{
if (it ==str.end() or *it++ != c)
return false;
}
return true;
}
bool subsequence_match(StringView str, StringView subseq)
{
auto it = str.begin();
for (auto& c : subseq)
{
if (it == str.end())
return false;
while (*it != c)
{
if (++it == str.end())
return false;
}
++it;
}
return true;
}
String expand_tabs(StringView line, CharCount tabstop, CharCount col)
{
String res;
using Utf8It = utf8::utf8_iterator<const char*>;
for (Utf8It it = line.begin(); it.base() < line.end(); ++it)
{
if (*it == '\t')
{
CharCount end_col = (col / tabstop + 1) * tabstop;
res += String{' ', end_col - col};
}
else
res += *it;
}
return res;
}
}
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