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#include <iostream>
#include <cassert>
#include <cstring>
#include <memory>
#include "jwt/string_view.hpp"
using string_view = jwt::basic_string_view<char>;
void basic_cons()
{
// Default construction
string_view sv{};
assert (sv.length() == 0 && "Size must be zero for default constructor");
// Construction from string literal
string_view sv2{"Arun Muralidharan"};
assert (sv2.length() == strlen("Arun Muralidharan") && "Lengths must match");
const char* haystack = "some really big data with infinite objects....";
// Construct using part of data
string_view sv3{haystack, 4};
assert (sv3.length() == 4 && "Partial construction is not ok");
assert (sv3.to_string() == "some" && "Partial strings are not equal");
return;
}
void iterator_test()
{
string_view sv{"Arun Muralidharan"};
for (auto c : sv) std::cout << c;
std::cout << std::endl;
return;
}
void str_operations()
{
string_view sv{"Arun Muralidharan"};
string_view tmp = sv;
sv.remove_prefix(5);
assert (sv.to_string() == "Muralidharan" && "Remove prefix failed");
sv = tmp;
sv.remove_suffix(strlen("Muralidharan"));
assert (sv.to_string() == "Arun " && "Remove suffix failed");
sv=tmp;
{
std::unique_ptr<char[]> dst{new char[32]};
sv.copy(dst.get(), 6, 0);
dst[6] = '\0';
assert (strlen(dst.get()) == 6 && "Copy Failed-1");
assert (std::string{dst.get()} == "Arun M" && "Copy Failed-2");
sv.copy(dst.get(), 8, 4);
dst[8] = '\0';
assert (strlen(dst.get()) == 8 && "Middle copy failed-1");
assert (std::string{dst.get()} == " Muralid" && "Middle copy failed-2");
}
{
auto ss1 = sv.substr(0, 4);
assert (ss1.to_string() == "Arun" && "Substr failed - 1");
auto ss2 = sv.substr(1, 3);
assert (ss2.to_string() == "run" && "Substr failed - 2");
auto ss3 = sv.substr(0);
assert (ss3.length() == sv.length() && "Substr failed - 3");
}
return;
}
void find_oper()
{
string_view sv{"Arun Muralidharan"};
auto pos = sv.find("Arun", 0, 4);
assert (pos == 0 && "Arun not found in sv");
pos = sv.find("arun", 0, 4);
assert (pos == string_view::npos && "arun is not there in sv");
sv = "This has a, in it.";
pos = sv.find_first_of(",", 0, 1);
assert (pos != string_view::npos);
assert (pos == 10 && "Comma not found at correct place");
pos = sv.find_first_of(",", 10, 1);
assert (pos != string_view::npos);
assert (pos == 10 && "Comma not found at correct place");
pos = sv.find_first_of(":", 10, 1);
assert (pos == string_view::npos);
pos = sv.find_last_of(",", 5, 1);
assert (pos == string_view::npos);
pos = sv.find_last_of(",", sv.length() - 1, 1);
assert (pos != string_view::npos);
assert (pos == 10 && "Comma not found at correct place");
pos = sv.find_first_of(".", 0, 1);
assert (pos == sv.length() - 1 && "Dot not found at correct place");
pos = sv.find_last_of(".", sv.length() - 2, 1);
assert (pos == string_view::npos);
pos = sv.find_last_of(".", sv.length() - 1, 1);
assert (pos == sv.length() - 1);
sv = "Some string :<> with some ??? pattern --**";
pos = sv.rfind("???", sv.length() - 1, 3);
assert (pos != string_view::npos && "??? not found");
assert (pos == 26 && "??? not found at the correct place");
sv = "ATCGTTCACGRRRTCGGGGACGTC";
pos = sv.find_first_not_of("ATCG");
assert (pos != string_view::npos);
assert (pos == 10);
return;
}
void conversions()
{
auto c2sv = [](int num) -> string_view {
switch (num) {
case 1: return "one";
case 2: return "two";
case 3: return "three";
default: return "many";
};
};
auto res = c2sv(2);
assert (res.to_string() == "two");
auto s2sv = [](std::string s) {
return s;
};
s2sv(static_cast<std::string>(res));
}
void comparisons()
{
string_view s1{"Apple"};
string_view s2{"Orange"};
assert (s1 != s2 && "Two string views are not equal");
assert (s2 > s1 && "Orange is lexicographically bigger than Apple");
s2 = "Apples";
assert (s2 > s1 && "Because Apples is plural");
}
int main() {
basic_cons();
iterator_test();
str_operations();
find_oper();
conversions();
comparisons();
return 0;
};
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