Module vi::util

Useful utilities for manipulating Vietnamese string & characters.

Functions

• clean_char
  Strip off tone mark & modifications from an input char.
• extract_letter_modifications
  Extract letter modifications from an input string.
• extract_tone
  Extract a tone mark from an input string. There can only be one tone mark.
• extract_tone_char
  Extract a tone mark from an input char.
• insert_ư_if_vowel_not_present
  Append an ư character to the input string if it doesn’t contain any vowel.
• is_vowel
  Check if a character is a vowel
• modify_letter_or_else
  Perform letter modification or fallback to a callback function.
• remove_modification
  Remove modification from an input char.
• remove_tone_mark
  Remove tone mark from an input char.
• replace_last_char
  Replace the last character in an input char.
• replace_nth_char
  Replace a character at an index in an input char.