76 lines
1.7 KiB
Rust
76 lines
1.7 KiB
Rust
use crate::common::gen::codepoints::WHITESPACE;
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pub fn trimmed(val: &[u8]) -> &[u8] {
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let mut start = 0;
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while val.get(start).filter(|&&c| WHITESPACE[c]).is_some() {
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start += 1;
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}
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let mut end = val.len();
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while end > start && val.get(end - 1).filter(|&&c| WHITESPACE[c]).is_some() {
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end -= 1;
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}
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&val[start..end]
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}
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pub fn left_trim(val: &mut Vec<u8>) {
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let mut len = 0;
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while val.get(len).filter(|&&c| WHITESPACE[c]).is_some() {
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len += 1;
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}
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val.drain(0..len);
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}
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pub fn right_trim(val: &mut Vec<u8>) {
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let mut retain = val.len();
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while retain > 0 && val.get(retain - 1).filter(|&&c| WHITESPACE[c]).is_some() {
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retain -= 1;
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}
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val.truncate(retain);
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}
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pub fn collapse_whitespace(val: &mut Vec<u8>) {
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let mut write = 0;
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let mut in_whitespace = false;
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for i in 0..val.len() {
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let mut c = val[i];
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if WHITESPACE[c] {
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if in_whitespace {
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// Skip this character.
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continue;
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};
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in_whitespace = true;
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c = b' ';
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} else {
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in_whitespace = false;
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};
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val[write] = c;
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write += 1;
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}
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val.truncate(write);
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}
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pub fn remove_all_whitespace(val: &mut Vec<u8>) {
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let mut write = 0;
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for i in 0..val.len() {
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let c = val[i];
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if WHITESPACE[c] {
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// Skip this character.
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continue;
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};
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val[write] = c;
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write += 1;
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}
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val.truncate(write);
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}
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pub fn is_all_whitespace(val: &[u8]) -> bool {
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for &c in val {
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if !WHITESPACE[c] {
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return false;
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};
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}
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true
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}
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