246 lines
8.6 KiB
C++
246 lines
8.6 KiB
C++
#include <cstdlib>
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#include <functional>
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#include <iterator>
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#include <cubescript/cubescript.hh>
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#include "cs_std.hh"
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#include "cs_strman.hh"
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#include "cs_thread.hh"
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namespace cubescript {
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template<typename F>
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static inline void str_cmp_by(
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state &cs, span_type<any_value> args, any_value &res, F cfunc
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) {
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bool val;
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if (args.size() >= 2) {
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val = cfunc(args[0].get_string(cs), args[1].get_string(cs));
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for (size_t i = 2; (i < args.size()) && val; ++i) {
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val = cfunc(args[i - 1].get_string(cs), args[i].get_string(cs));
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}
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} else {
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val = cfunc(
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!args.empty() ? args[0].get_string(cs) : std::string_view(),
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std::string_view()
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);
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}
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res.set_integer(integer_type(val));
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}
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LIBCUBESCRIPT_EXPORT void std_init_string(state &cs) {
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new_cmd_quiet(cs, "strstr", "ss", [](auto &ccs, auto args, auto &res) {
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std::string_view a = args[0].get_string(ccs);
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std::string_view b = args[1].get_string(ccs);
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auto pos = a.find(b);
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if (pos == a.npos) {
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res.set_integer(-1);
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} else {
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res.set_integer(integer_type(pos));
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}
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});
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new_cmd_quiet(cs, "strlen", "s", [](auto &ccs, auto args, auto &res) {
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res.set_integer(integer_type(args[0].get_string(ccs).size()));
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});
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new_cmd_quiet(cs, "strcode", "si", [](auto &ccs, auto args, auto &res) {
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std::string_view str = args[0].get_string(ccs);
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integer_type i = args[1].get_integer();
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if (i >= integer_type(str.size())) {
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res.set_integer(0);
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} else {
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res.set_integer(static_cast<unsigned char>(str[i]));
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}
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});
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new_cmd_quiet(cs, "codestr", "i", [](auto &ccs, auto args, auto &res) {
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char const p[2] = { char(args[0].get_integer()), '\0' };
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res.set_string(std::string_view{static_cast<char const *>(p)}, ccs);
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});
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new_cmd_quiet(cs, "strlower", "s", [](auto &ccs, auto args, auto &res) {
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auto inps = args[0].get_string(ccs);
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auto *ics = state_p{ccs}.ts().istate;
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auto *buf = ics->strman->alloc_buf(inps.size());
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for (std::size_t i = 0; i < inps.size(); ++i) {
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buf[i] = char(tolower(inps.data()[i]));
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}
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res.set_string(ics->strman->steal(buf));
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});
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new_cmd_quiet(cs, "strupper", "s", [](auto &ccs, auto args, auto &res) {
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auto inps = args[0].get_string(ccs);
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auto *ics = state_p{ccs}.ts().istate;
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auto *buf = ics->strman->alloc_buf(inps.size());
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for (std::size_t i = 0; i < inps.size(); ++i) {
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buf[i] = char(toupper(inps.data()[i]));
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}
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res.set_string(ics->strman->steal(buf));
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});
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new_cmd_quiet(cs, "escape", "s", [](auto &ccs, auto args, auto &res) {
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charbuf s{ccs};
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escape_string(std::back_inserter(s), args[0].get_string(ccs));
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res.set_string(s.str(), ccs);
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});
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new_cmd_quiet(cs, "unescape", "s", [](auto &ccs, auto args, auto &res) {
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charbuf s{ccs};
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unescape_string(std::back_inserter(s), args[0].get_string(ccs));
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res.set_string(s.str(), ccs);
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});
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new_cmd_quiet(cs, "concat", "...", [](auto &ccs, auto args, auto &res) {
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res.set_string(concat_values(ccs, args, " "));
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});
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new_cmd_quiet(cs, "concatword", "...", [](auto &ccs, auto args, auto &res) {
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res.set_string(concat_values(ccs, args));
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});
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new_cmd_quiet(cs, "format", "...", [](auto &ccs, auto args, auto &res) {
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if (args.empty()) {
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return;
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}
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charbuf s{ccs};
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string_ref fs = args[0].get_string(ccs);
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std::string_view f{fs};
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for (auto it = f.begin(); it != f.end(); ++it) {
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char c = *it;
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++it;
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if ((c == '%') && (it != f.end())) {
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char ic = *it;
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++it;
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if ((ic >= '1') && (ic <= '9')) {
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int i = ic - '0';
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if (std::size_t(i) < args.size()) {
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s.append(args[i].get_string(ccs));
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}
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} else {
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s.push_back(ic);
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}
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} else {
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s.push_back(c);
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}
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}
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res.set_string(s.str(), ccs);
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});
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new_cmd_quiet(cs, "tohex", "ii", [](auto &ccs, auto args, auto &res) {
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char buf[32];
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/* use long long as the largest signed integer type */
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auto val = static_cast<long long>(args[0].get_integer());
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int prec = std::max(int(args[1].get_integer()), 1);
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int n = snprintf(buf, sizeof(buf), "0x%.*llX", prec, val);
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if (n >= int(sizeof(buf))) {
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charbuf s{ccs};
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s.reserve(n + 1);
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s.data()[0] = '\0';
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int nn = snprintf(s.data(), n + 1, "0x%.*llX", prec, val);
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if ((nn > 0) && (nn <= n)) {
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res.set_string(
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std::string_view{s.data(), std::size_t(nn)}, ccs
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);
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return;
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}
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} else if (n > 0) {
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res.set_string(static_cast<char const *>(buf), ccs);
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return;
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}
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/* should be unreachable */
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abort();
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});
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new_cmd_quiet(cs, "substr", "sii#", [](auto &ccs, auto args, auto &res) {
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std::string_view s = args[0].get_string(ccs);
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auto start = args[1].get_integer(), count = args[2].get_integer();
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auto numargs = args[3].get_integer();
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auto len = integer_type(s.size());
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auto offset = std::clamp(start, integer_type(0), len);
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res.set_string(std::string_view{
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&s[offset],
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((numargs >= 3)
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? size_t(std::clamp(count, integer_type(0), len - offset))
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: size_t(len - offset))
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}, ccs);
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});
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new_cmd_quiet(cs, "strcmp", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::equal_to<std::string_view>());
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});
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new_cmd_quiet(cs, "=s", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::equal_to<std::string_view>());
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});
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new_cmd_quiet(cs, "!=s", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::not_equal_to<std::string_view>());
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});
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new_cmd_quiet(cs, "<s", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::less<std::string_view>());
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});
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new_cmd_quiet(cs, ">s", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::greater<std::string_view>());
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});
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new_cmd_quiet(cs, "<=s", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::less_equal<std::string_view>());
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});
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new_cmd_quiet(cs, ">=s", "s1...", [](auto &ccs, auto args, auto &res) {
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str_cmp_by(ccs, args, res, std::greater_equal<std::string_view>());
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});
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new_cmd_quiet(cs, "strreplace", "ssss", [](
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auto &ccs, auto args, auto &res
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) {
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std::string_view s = args[0].get_string(ccs);
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std::string_view oldval = args[1].get_string(ccs),
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newval = args[2].get_string(ccs),
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newval2 = args[3].get_string(ccs);
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if (newval2.empty()) {
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newval2 = newval;
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}
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if (oldval.empty()) {
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res.set_string(s, ccs);
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return;
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}
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charbuf buf{ccs};
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for (size_t i = 0;; ++i) {
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auto p = s.find(oldval);
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if (p == s.npos) {
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buf.append(s);
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res.set_string(s, ccs);
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return;
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}
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buf.append(s.substr(0, p));
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buf.append((i & 1) ? newval2 : newval);
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buf.append(s.substr(
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p + oldval.size(),
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s.size() - p - oldval.size()
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));
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}
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});
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new_cmd_quiet(cs, "strsplice", "ssii", [](
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auto &ccs, auto args, auto &res
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) {
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std::string_view s = args[0].get_string(ccs);
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std::string_view vals = args[1].get_string(ccs);
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integer_type skip = args[2].get_integer(),
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count = args[3].get_integer();
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integer_type offset = std::clamp(skip, integer_type(0), integer_type(s.size())),
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len = std::clamp(count, integer_type(0), integer_type(s.size()) - offset);
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charbuf p{ccs};
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p.reserve(s.size() - len + vals.size());
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if (offset) {
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p.append(s.substr(0, offset));
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}
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p.append(vals);
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if ((offset + len) < integer_type(s.size())) {
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p.append(s.substr(offset + len, s.size() - offset - len));
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}
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res.set_string(p.str(), ccs);
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});
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}
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} /* namespace cubescript */
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