bendns' repos / helix
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'helix-core/src/case_conversion.rs')
-rw-r--r--helix-core/src/case_conversion.rs69
1 files changed, 69 insertions, 0 deletions
diff --git a/helix-core/src/case_conversion.rs b/helix-core/src/case_conversion.rs
new file mode 100644
index 00000000..2054a2bb
--- /dev/null
+++ b/helix-core/src/case_conversion.rs
@@ -0,0 +1,69 @@
+use crate::Tendril;
+
+// todo: should this be grapheme aware?
+
+pub fn to_pascal_case(text: impl Iterator<Item = char>) -> Tendril {
+ let mut res = Tendril::new();
+ to_pascal_case_with(text, &mut res);
+ res
+}
+
+pub fn to_pascal_case_with(text: impl Iterator<Item = char>, buf: &mut Tendril) {
+ let mut at_word_start = true;
+ for c in text {
+ // we don't count _ as a word char here so case conversions work well
+ if !c.is_alphanumeric() {
+ at_word_start = true;
+ continue;
+ }
+ if at_word_start {
+ at_word_start = false;
+ buf.extend(c.to_uppercase());
+ } else {
+ buf.push(c)
+ }
+ }
+}
+
+pub fn to_upper_case_with(text: impl Iterator<Item = char>, buf: &mut Tendril) {
+ for c in text {
+ for c in c.to_uppercase() {
+ buf.push(c)
+ }
+ }
+}
+
+pub fn to_lower_case_with(text: impl Iterator<Item = char>, buf: &mut Tendril) {
+ for c in text {
+ for c in c.to_lowercase() {
+ buf.push(c)
+ }
+ }
+}
+
+pub fn to_camel_case(text: impl Iterator<Item = char>) -> Tendril {
+ let mut res = Tendril::new();
+ to_camel_case_with(text, &mut res);
+ res
+}
+pub fn to_camel_case_with(mut text: impl Iterator<Item = char>, buf: &mut Tendril) {
+ for c in &mut text {
+ if c.is_alphanumeric() {
+ buf.extend(c.to_lowercase())
+ }
+ }
+ let mut at_word_start = false;
+ for c in text {
+ // we don't count _ as a word char here so case conversions work well
+ if !c.is_alphanumeric() {
+ at_word_start = true;
+ continue;
+ }
+ if at_word_start {
+ at_word_start = false;
+ buf.extend(c.to_uppercase());
+ } else {
+ buf.push(c)
+ }
+ }
+}