106 lines
2.8 KiB
Rust
106 lines
2.8 KiB
Rust
/*
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* meli - text_processing mod.
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*
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* Copyright 2017-2020 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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pub mod grapheme_clusters;
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pub mod line_break;
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mod tables;
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mod types;
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pub use types::Reflow;
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pub mod wcwidth;
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pub use grapheme_clusters::*;
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pub use line_break::*;
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pub use wcwidth::*;
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pub trait Truncate {
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fn truncate_at_boundary(self, new_len: usize);
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}
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impl Truncate for &mut String {
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fn truncate_at_boundary(self, new_len: usize) {
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if new_len >= self.len() {
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return;
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}
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extern crate unicode_segmentation;
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use unicode_segmentation::UnicodeSegmentation;
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if let Some((last, _)) = UnicodeSegmentation::grapheme_indices(self.as_str(), true)
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.take(new_len)
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.last()
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{
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String::truncate(self, last);
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}
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}
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}
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pub trait GlobMatch {
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fn matches_glob(&self, s: &str) -> bool;
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fn is_glob(&self) -> bool;
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}
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impl GlobMatch for str {
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fn matches_glob(&self, s: &str) -> bool {
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let parts = s.split("*");
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let mut ptr = 0;
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let mut part_no = 0;
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for p in parts {
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if p.is_empty() {
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/* asterisk is at beginning and/or end of glob */
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/* eg "*".split("*") gives ["", ""] */
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part_no += 1;
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continue;
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}
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if ptr >= self.len() {
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return false;
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}
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if part_no > 0 {
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while !&self[ptr..].starts_with(p) {
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ptr += 1;
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if ptr >= self.len() {
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return false;
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}
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}
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}
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if !&self[ptr..].starts_with(p) {
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return false;
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}
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ptr += p.len();
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part_no += 1;
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}
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true
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}
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fn is_glob(&self) -> bool {
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self.contains('*')
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}
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}
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#[test]
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fn test_globmatch() {
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assert!("INBOX".matches_glob("INBOX"));
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assert!("INBOX/Sent".matches_glob("INBOX/*"));
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assert!(!"INBOX/Sent".matches_glob("*/Drafts"));
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assert!("INBOX/Sent".matches_glob("*/Sent"));
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assert!("INBOX/Archives/2047".matches_glob("*"));
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}
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