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Add String.to_{camel,pascal,snake}_case methods

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Danil Alexeev 2022-08-30 12:36:24 +03:00
parent 432b25d364
commit d4555ef5fb
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GPG key ID: 124453E157DA8DC7
18 changed files with 234 additions and 88 deletions
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85
core/string/ustring.cpp
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@ -970,8 +970,42 @@ const char32_t *String::get_data() const {
return size() ? &operator[](0) : &zero;
}
String String::_camelcase_to_underscore() const {
const char32_t *cstr = get_data();
String new_string;
int start_index = 0;
for (int i = 1; i < this->size(); i++) {
bool is_prev_upper = is_ascii_upper_case(cstr[i - 1]);
bool is_prev_lower = is_ascii_lower_case(cstr[i - 1]);
bool is_prev_digit = is_digit(cstr[i - 1]);
bool is_curr_upper = is_ascii_upper_case(cstr[i]);
bool is_curr_lower = is_ascii_lower_case(cstr[i]);
bool is_curr_digit = is_digit(cstr[i]);
bool is_next_lower = false;
if (i + 1 < this->size()) {
is_next_lower = is_ascii_lower_case(cstr[i + 1]);
}
const bool cond_a = is_prev_lower && is_curr_upper; // aA
const bool cond_b = (is_prev_upper || is_prev_digit) && is_curr_upper && is_next_lower; // AAa, 2Aa
const bool cond_c = is_prev_digit && is_curr_lower && is_next_lower; // 2aa
const bool cond_d = (is_prev_upper || is_prev_lower) && is_curr_digit; // A2, a2
if (cond_a || cond_b || cond_c || cond_d) {
new_string += this->substr(start_index, i - start_index) + "_";
start_index = i;
}
}
new_string += this->substr(start_index, this->size() - start_index);
return new_string.to_lower();
}
String String::capitalize() const {
String aux = this->camelcase_to_underscore(true).replace("_", " ").strip_edges();
String aux = this->_camelcase_to_underscore().replace("_", " ").strip_edges();
String cap;
for (int i = 0; i < aux.get_slice_count(" "); i++) {
String slice = aux.get_slicec(' ', i);
@ -987,45 +1021,20 @@ String String::capitalize() const {
return cap;
}
String String::camelcase_to_underscore(bool lowercase) const {
const char32_t *cstr = get_data();
String new_string;
int start_index = 0;
for (int i = 1; i < this->size(); i++) {
bool is_upper = is_ascii_upper_case(cstr[i]);
bool is_number = is_digit(cstr[i]);
bool are_next_2_lower = false;
bool is_next_lower = false;
bool is_next_number = false;
bool was_precedent_upper = is_ascii_upper_case(cstr[i - 1]);
bool was_precedent_number = is_digit(cstr[i - 1]);
if (i + 2 < this->size()) {
are_next_2_lower = is_ascii_lower_case(cstr[i + 1]) && is_ascii_lower_case(cstr[i + 2]);
}
if (i + 1 < this->size()) {
is_next_lower = is_ascii_lower_case(cstr[i + 1]);
is_next_number = is_digit(cstr[i + 1]);
}
const bool cond_a = is_upper && !was_precedent_upper && !was_precedent_number;
const bool cond_b = was_precedent_upper && is_upper && are_next_2_lower;
const bool cond_c = is_number && !was_precedent_number;
const bool can_break_number_letter = is_number && !was_precedent_number && is_next_lower;
const bool can_break_letter_number = !is_number && was_precedent_number && (is_next_lower || is_next_number);
bool should_split = cond_a || cond_b || cond_c || can_break_number_letter || can_break_letter_number;
if (should_split) {
new_string += this->substr(start_index, i - start_index) + "_";
start_index = i;
}
String String::to_camel_case() const {
String s = this->to_pascal_case();
if (!s.is_empty()) {
s[0] = _find_lower(s[0]);
}
return s;
}
new_string += this->substr(start_index, this->size() - start_index);
return lowercase ? new_string.to_lower() : new_string;
String String::to_pascal_case() const {
return this->capitalize().replace(" ", "");
}
String String::to_snake_case() const {
return this->_camelcase_to_underscore().replace(" ", "_").strip_edges();
}
String String::get_with_code_lines() const {