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feat: add trim in string op opposited with strip

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yyc12345
2025-10-01 20:53:43 +08:00
parent 05a80268ab
commit 446f880df4
5 changed files with 153 additions and 7 deletions
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58
src/yycc/string/op.cpp
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@@ -379,7 +379,7 @@ namespace yycc::string::op {
#pragma endregion
template<bool bDoLeft, bool bDoRight>
std::u8string_view internal_strip(const std::u8string_view& strl, const std::u8string_view& words) {
static std::u8string_view internal_strip(const std::u8string_view& strl, const std::u8string_view& words) {
std::optional<TrieTree> prefix, suffix;
if constexpr (bDoLeft) prefix = TrieTree();
if constexpr (bDoRight) suffix = TrieTree();
@@ -419,6 +419,62 @@ namespace yycc::string::op {
#pragma endregion
#pragma region Trim
template<bool bDoLeft, bool bDoRight>
std::u8string_view internal_trim(const std::u8string_view& strl, const std::u8string_view& words) {
// check words
if (!std::ranges::none_of(words, [](auto c) { return static_cast<uint8_t>(c) & 0x80; })) {
throw std::invalid_argument("given words are not all ASCII (<= 0x7F) only");
}
// prepare return value
std::u8string_view rv = strl;
// remove left first
if constexpr (bDoLeft) {
auto finder = rv.find_first_not_of(words);
if (finder == std::u8string_view::npos) {
// all string are in given words
rv = std::u8string_view();
} else {
// remove by offset
rv = rv.substr(finder);
}
}
// remove right
if constexpr (bDoRight) {
auto finder = rv.find_last_not_of(words);
if (finder == std::u8string_view::npos) {
// all string are in given words
rv = std::u8string_view();
} else {
// remove by offset
rv = rv.substr(0, finder + 1);
}
}
// return value
return rv;
}
std::u8string_view trim(const std::u8string_view& strl, const std::u8string_view& words) {
return internal_trim<true, true>(strl, words);
}
std::u8string_view ltrim(const std::u8string_view& strl, const std::u8string_view& words) {
return internal_trim<true, false>(strl, words);
}
std::u8string_view rtrim(const std::u8string_view& strl, const std::u8string_view& words) {
return internal_trim<false, true>(strl, words);
}
#pragma endregion
#pragma region Split
// Reference: