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feat: add string_position_of

This commit is contained in:
Théo LUDWIG 2023-12-26 20:30:54 +01:00
parent 9bb21e070f
commit ec6e748d24
Signed by: theoludwig
GPG Key ID: ADFE5A563D718F3B
4 changed files with 36 additions and 0 deletions

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@ -384,3 +384,14 @@ bool string_ends_with(const string_t string, const string_t prefix) {
}
return ends_with;
}
size_t string_position_of(const string_t string, const char character) {
size_t position_found = 0;
size_t string_length = string_get_length(string);
for (size_t index = 0; index < string_length && position_found == 0; index++) {
if (string[index] == character) {
position_found = index + 1;
}
}
return position_found;
}

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@ -264,4 +264,15 @@ bool string_starts_with(const string_t string, const string_t prefix);
*/
bool string_ends_with(const string_t string, const string_t prefix);
/**
* @brief Returns the position (index + 1) within the string of the first occurrence of the specified substring (0 if not found).
*
* @param string
* @param substring
* @return size_t
* @example string_position_of("hello world", "e") // 2
* @since v4.2.0
*/
size_t string_position_of(const string_t string, const char character);
#endif

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@ -25,6 +25,7 @@ void string_test() {
string_get_last_occurence_of_character_test();
string_starts_with_test();
string_ends_with_test();
string_position_of_test();
}
void string_get_length_test() {
@ -277,3 +278,14 @@ void string_ends_with_test() {
assert(!string_ends_with("abcdef", "bcd"));
assert(!string_ends_with("abcdef", "abcdefg"));
}
void string_position_of_test() {
assert(string_position_of("hello world", 'e') == 2);
assert(string_position_of("abcdef", 'a') == 1);
assert(string_position_of("abcdef", 'b') == 2);
assert(string_position_of("abcdef", 'c') == 3);
assert(string_position_of("abcdef", 'd') == 4);
assert(string_position_of("abcdef", 'e') == 5);
assert(string_position_of("abcdef", 'f') == 6);
assert(string_position_of("abcdef", 'g') == 0);
}

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@ -58,4 +58,6 @@ void string_starts_with_test();
void string_ends_with_test();
void string_position_of_test();
#endif