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#pragma once
namespace nall {
auto string::trim(rstring lhs, rstring rhs, long limit) -> string& {
rtrim(rhs, limit);
ltrim(lhs, limit);
return *this;
}
auto string::ltrim(rstring lhs, long limit) -> string& {
if(lhs.size() == 0) return *this;
long matches = 0;
while(matches < limit) {
signed offset = lhs.size() * matches;
signed length = (signed)size() - offset;
if(length < (signed)lhs.size()) break;
if(memory::compare(data() + offset, lhs.data(), lhs.size()) != 0) break;
matches++;
}
if(matches) remove(0, lhs.size() * matches);
return *this;
}
auto string::rtrim(rstring rhs, long limit) -> string& {
if(rhs.size() == 0) return *this;
long matches = 0;
while(matches < limit) {
signed offset = (signed)size() - rhs.size() * (matches + 1);
signed length = (signed)size() - offset;
if(offset < 0 || length < (signed)rhs.size()) break;
if(memory::compare(data() + offset, rhs.data(), rhs.size()) != 0) break;
matches++;
}
if(matches) resize(size() - rhs.size() * matches);
return *this;
}
auto string::itrim(rstring lhs, rstring rhs, long limit) -> string& {
irtrim(rhs, limit);
iltrim(lhs, limit);
return *this;
}
auto string::iltrim(rstring lhs, long limit) -> string& {
if(lhs.size() == 0) return *this;
long matches = 0;
while(matches < limit) {
signed offset = lhs.size() * matches;
signed length = (signed)size() - offset;
if(length < (signed)lhs.size()) break;
if(memory::icompare(data() + offset, lhs.data(), lhs.size()) != 0) break;
matches++;
}
if(matches) remove(0, lhs.size() * matches);
return *this;
}
auto string::irtrim(rstring rhs, long limit) -> string& {
if(rhs.size() == 0) return *this;
long matches = 0;
while(matches < limit) {
signed offset = (signed)size() - rhs.size() * (matches + 1);
signed length = (signed)size() - offset;
if(offset < 0 || length < (signed)rhs.size()) break;
if(memory::icompare(data() + offset, rhs.data(), rhs.size()) != 0) break;
matches++;
}
if(matches) resize(size() - rhs.size() * matches);
return *this;
}
auto string::strip() -> string& {
rstrip();
lstrip();
return *this;
}
auto string::lstrip() -> string& {
unsigned length = 0;
while(length < size()) {
char input = operator[](length);
if(input != ' ' && input != '\t' && input != '\r' && input != '\n') break;
length++;
}
if(length) remove(0, length);
return *this;
}
auto string::rstrip() -> string& {
unsigned length = 0;
while(length < size()) {
bool matched = false;
char input = operator[](size() - length - 1);
if(input != ' ' && input != '\t' && input != '\r' && input != '\n') break;
length++;
}
if(length) resize(size() - length);
return *this;
}
}
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