Update 2.0
Changes to formatting system Create a formatting struct and then pass it to the to_text macro or the to_text_fmt function to format the strings accordingly Updated docs for the new version
This commit is contained in:
Uttarayan Mondal
+177
@@ -0,0 +1,177 @@
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use crate::Formatting;
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/// Convert digit to words in a string.
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pub fn digit_to_text(digit: u8, capitalize: bool) -> Option<String> {
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if capitalize {
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match digit {
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0 => Some("".to_string()),
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1 => Some("One".to_string()),
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2 => Some("Two".to_string()),
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3 => Some("Three".to_string()),
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4 => Some("Four".to_string()),
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5 => Some("Five".to_string()),
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6 => Some("Six".to_string()),
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7 => Some("Seven".to_string()),
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8 => Some("Eight".to_string()),
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9 => Some("Nine".to_string()),
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_ => None,
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}
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} else {
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match digit {
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0 => Some("".to_string()),
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1 => Some("one".to_string()),
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2 => Some("two".to_string()),
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3 => Some("three".to_string()),
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4 => Some("four".to_string()),
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5 => Some("five".to_string()),
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6 => Some("six".to_string()),
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7 => Some("seven".to_string()),
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8 => Some("eight".to_string()),
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9 => Some("nine".to_string()),
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_ => None,
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}
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}
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}
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fn place_value(number: u8, place: u8, fmt: &Formatting) -> Option<String> {
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let mut buffer = digit_to_text(number, fmt.capitalize).unwrap();
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if let Some(sep) = fmt.place_seperator {
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if number != 0 && place != 1 {
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buffer.push_str(sep)
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}
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}
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if fmt.capitalize {
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match place {
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1 => (), //Can happen but should return the same digit
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2 => (), //This should never happen as 2 is included in the tens_place_holders
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3 => buffer.push_str("Hundred"),
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4 => buffer.push_str("Thousand"),
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5 => (), // Souldn't happen
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6 => buffer.push_str("Million"),
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_ => (),
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};
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} else {
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match place {
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1 => (), //Can happen but should return the same digit
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2 => (), //This should never happen as 2 is included in the tens_place_holders
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3 => buffer.push_str("hundred"),
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4 => buffer.push_str("thousand"),
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5 => (), // Souldn't happen
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6 => buffer.push_str("million"),
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_ => (),
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}
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}
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Some(buffer)
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}
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fn tens_place(tens: u8, ones: u8, fmt: &Formatting) -> Option<String> {
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match tens {
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0 => digit_to_text(ones, fmt.capitalize),
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1 => {
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if fmt.capitalize {
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match ones {
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0 => Some("Ten".to_string()),
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1 => Some("Eleven".to_string()),
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2 => Some("Twelve".to_string()),
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3 => Some("Thirteen".to_string()),
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4 => Some("Fourteen".to_string()),
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5 => Some("Fifteen".to_string()),
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6 => Some("Sixteen".to_string()),
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7 => Some("Seventeen".to_string()),
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8 => Some("Eighteen".to_string()),
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9 => Some("Nineteen".to_string()),
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_ => None,
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}
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} else {
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match ones {
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0 => Some("ten".to_string()),
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1 => Some("eleven".to_string()),
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2 => Some("twelve".to_string()),
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3 => Some("thirteen".to_string()),
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4 => Some("fourteen".to_string()),
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5 => Some("fifteen".to_string()),
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6 => Some("sixteen".to_string()),
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7 => Some("seventeen".to_string()),
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8 => Some("eighteen".to_string()),
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9 => Some("nineteen".to_string()),
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_ => None,
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}
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}
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}
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d @ 2..=5 | d @ 8 => Some({
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let mut buffer = String::new();
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if fmt.capitalize {
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match d {
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2 => buffer.push_str("Twenty"),
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3 => buffer.push_str("Thirty"),
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4 => buffer.push_str("Forty"),
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5 => buffer.push_str("Fifty"),
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8 => buffer.push_str("Eighty"),
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_ => (),
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}
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} else {
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match d {
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2 => buffer.push_str("twenty"),
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3 => buffer.push_str("thirty"),
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4 => buffer.push_str("forty"),
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5 => buffer.push_str("fifty"),
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8 => buffer.push_str("eighty"),
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_ => (),
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}
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}
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if let Some(sep) = fmt.tens_seperator {
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buffer.push_str(sep);
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}
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buffer.push_str(digit_to_text(ones, fmt.capitalize).unwrap().as_str());
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buffer
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}),
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d @ 6..=9 => Some({
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let mut buffer = digit_to_text(d, fmt.capitalize).unwrap() + "ty";
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if let Some(sep) = fmt.tens_seperator {
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buffer.push_str(sep);
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}
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buffer.push_str(digit_to_text(ones, fmt.capitalize).unwrap().as_str());
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buffer
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}),
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_ => None,
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}
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}
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/// Convert usize to words in a string seperated by a seperator.
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pub fn to_text_fmt(number: usize, fmt: &Formatting) -> String {
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let mut numtext: String = String::new();
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let mut last: Option<u8> = None;
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let tens_place_holders: [u8; 2] = [2, 5];
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let digits: Vec<u8> = number
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.to_string()
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.chars()
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.map(|d| d.to_digit(10).unwrap() as u8)
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.collect();
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let mut place: u8 = digits.len() as u8;
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for (_index, digit) in digits.iter().enumerate() {
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if tens_place_holders.contains(&place) {
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last = Some(*digit);
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place -= 1;
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continue;
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}
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if *digit != 0 && place != digits.len() as u8 && numtext != "" {
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if let Some(sep) = fmt.digit_seperator {
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numtext.push_str(sep);
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}
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}
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if let Some(last_digit) = last {
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numtext.push_str(tens_place(last_digit, *digit, fmt).unwrap().as_str());
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if place > 2 {
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if let Some(sep) = fmt.digit_seperator {
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numtext.push_str(sep);
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}
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numtext.push_str(place_value(0, place, fmt).unwrap().as_str());
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}
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last = None;
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} else if *digit != 0 {
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numtext.push_str(place_value(*digit, place, fmt).unwrap().as_str());
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}
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place -= 1;
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}
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numtext
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}
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