mirror of https://github.com/helix-editor/helix
70 lines
1.8 KiB
Rust
70 lines
1.8 KiB
Rust
use crate::Tendril;
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// todo: should this be grapheme aware?
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pub fn to_pascal_case(text: impl Iterator<Item = char>) -> Tendril {
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let mut res = Tendril::new();
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to_pascal_case_with(text, &mut res);
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res
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}
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pub fn to_pascal_case_with(text: impl Iterator<Item = char>, buf: &mut Tendril) {
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let mut at_word_start = true;
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for c in text {
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// we don't count _ as a word char here so case conversions work well
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if !c.is_alphanumeric() {
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at_word_start = true;
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continue;
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}
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if at_word_start {
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at_word_start = false;
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buf.extend(c.to_uppercase());
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} else {
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buf.push(c)
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}
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}
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}
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pub fn to_upper_case_with(text: impl Iterator<Item = char>, buf: &mut Tendril) {
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for c in text {
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for c in c.to_uppercase() {
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buf.push(c)
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}
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}
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}
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pub fn to_lower_case_with(text: impl Iterator<Item = char>, buf: &mut Tendril) {
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for c in text {
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for c in c.to_lowercase() {
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buf.push(c)
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}
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}
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}
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pub fn to_camel_case(text: impl Iterator<Item = char>) -> Tendril {
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let mut res = Tendril::new();
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to_camel_case_with(text, &mut res);
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res
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}
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pub fn to_camel_case_with(mut text: impl Iterator<Item = char>, buf: &mut Tendril) {
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for c in &mut text {
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if c.is_alphanumeric() {
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buf.extend(c.to_lowercase())
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}
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}
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let mut at_word_start = false;
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for c in text {
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// we don't count _ as a word char here so case conversions work well
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if !c.is_alphanumeric() {
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at_word_start = true;
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continue;
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}
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if at_word_start {
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at_word_start = false;
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buf.extend(c.to_uppercase());
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} else {
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buf.push(c)
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}
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}
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}
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