e7d16580f5
Use the same procedure as Python to determine whether a character is
printable, described in [PEP 3138]. In particular, this means that the
following character classes are escaped:
- Cc (Other, Control)
- Cf (Other, Format)
- Cs (Other, Surrogate), even though they can't appear in Rust strings
- Co (Other, Private Use)
- Cn (Other, Not Assigned)
- Zl (Separator, Line)
- Zp (Separator, Paragraph)
- Zs (Separator, Space), except for the ASCII space `' '` (`0x20`)
This allows for user-friendly inspection of strings that are not
English (e.g. compare `"\u{e9}\u{e8}\u{ea}"` to `"éèê"`).
Fixes #34318.
[PEP 3138]: https://www.python.org/dev/peps/pep-3138/
696 lines
10 KiB
Rust
696 lines
10 KiB
Rust
// Copyright 2012-2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// NOTE: The following code was generated by "src/etc/char_private.py",
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// do not edit directly!
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use slice::SliceExt;
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fn check(x: u16, singletons: &[u16], normal: &[u16]) -> bool {
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for &s in singletons {
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if x == s {
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return false;
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} else if x < s {
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break;
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}
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}
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for w in normal.chunks(2) {
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let start = w[0];
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let len = w[1];
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let difference = (x as i32) - (start as i32);
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if 0 <= difference {
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if difference < len as i32 {
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return false;
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}
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} else {
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break;
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}
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}
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true
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}
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pub fn is_printable(x: char) -> bool {
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let x = x as u32;
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let lower = x as u16;
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if x < 0x10000 {
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check(lower, SINGLETONS0, NORMAL0)
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} else if x < 0x20000 {
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check(lower, SINGLETONS1, NORMAL1)
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} else {
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if 0x20000 <= x && x < 0x2f800 {
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return false;
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}
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if 0x2fa1e <= x && x < 0xe0100 {
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return false;
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}
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if 0xe01f0 <= x && x < 0x110000 {
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return false;
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}
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true
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}
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}
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const SINGLETONS0: &'static [u16] = &[
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0xad,
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0x378,
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0x379,
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0x38b,
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0x38d,
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0x3a2,
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0x557,
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0x558,
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0x560,
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0x588,
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0x590,
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0x61c,
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0x61d,
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0x6dd,
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0x70e,
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0x70f,
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0x74b,
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0x74c,
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0x82e,
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0x82f,
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0x83f,
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0x85c,
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0x85d,
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0x8a1,
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0x8ff,
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0x978,
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0x980,
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0x984,
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0x98d,
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0x98e,
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0x991,
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0x992,
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0x9a9,
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0x9b1,
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0x9ba,
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0x9bb,
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0x9c5,
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0x9c6,
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0x9c9,
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0x9ca,
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0x9de,
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0x9e4,
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0x9e5,
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0xa04,
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0xa11,
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0xa12,
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0xa29,
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0xa31,
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0xa34,
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0xa37,
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0xa3a,
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0xa3b,
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0xa3d,
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0xa49,
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0xa4a,
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0xa5d,
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0xa84,
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0xa8e,
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0xa92,
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0xaa9,
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0xab1,
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0xab4,
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0xaba,
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0xabb,
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0xac6,
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0xaca,
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0xace,
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0xacf,
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0xae4,
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0xae5,
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0xb04,
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0xb0d,
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0xb0e,
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0xb11,
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0xb12,
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0xb29,
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0xb31,
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0xb34,
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0xb3a,
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0xb3b,
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0xb45,
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0xb46,
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0xb49,
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0xb4a,
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0xb5e,
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0xb64,
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0xb65,
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0xb84,
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0xb91,
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0xb9b,
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0xb9d,
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0xbc9,
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0xbce,
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0xbcf,
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0xc04,
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0xc0d,
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0xc11,
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0xc29,
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0xc34,
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0xc45,
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0xc49,
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0xc57,
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0xc64,
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0xc65,
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0xc80,
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0xc81,
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0xc84,
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0xc8d,
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0xc91,
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0xca9,
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0xcb4,
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0xcba,
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0xcbb,
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0xcc5,
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0xcc9,
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0xcdf,
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0xce4,
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0xce5,
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0xcf0,
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0xd04,
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0xd0d,
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0xd11,
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0xd3b,
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0xd3c,
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0xd45,
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0xd49,
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0xd64,
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0xd65,
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0xd80,
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0xd81,
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0xd84,
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0xdb2,
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0xdbc,
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0xdbe,
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0xdbf,
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0xdd5,
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0xdd7,
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0xe83,
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0xe85,
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0xe86,
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0xe89,
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0xe8b,
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0xe8c,
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0xe98,
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0xea0,
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0xea4,
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0xea6,
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0xea8,
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0xea9,
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0xeac,
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0xeba,
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0xebe,
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0xebf,
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0xec5,
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0xec7,
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0xece,
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0xecf,
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0xeda,
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0xedb,
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0xf48,
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0xf98,
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0xfbd,
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0xfcd,
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0x10c6,
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0x10ce,
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0x10cf,
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0x1249,
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0x124e,
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0x124f,
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0x1257,
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0x1259,
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0x125e,
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0x125f,
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0x1289,
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0x128e,
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0x128f,
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0x12b1,
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0x12b6,
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0x12b7,
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0x12bf,
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0x12c1,
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0x12c6,
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0x12c7,
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0x12d7,
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0x1311,
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0x1316,
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0x1317,
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0x135b,
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0x135c,
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0x1680,
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0x170d,
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0x176d,
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0x1771,
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0x17de,
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0x17df,
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0x180e,
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0x180f,
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0x196e,
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0x196f,
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0x1a1c,
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0x1a1d,
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0x1a5f,
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0x1a7d,
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0x1a7e,
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0x1f16,
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0x1f17,
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0x1f1e,
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0x1f1f,
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0x1f46,
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0x1f47,
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0x1f4e,
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0x1f4f,
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0x1f58,
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0x1f5a,
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0x1f5c,
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0x1f5e,
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0x1f7e,
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0x1f7f,
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0x1fb5,
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0x1fc5,
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0x1fd4,
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0x1fd5,
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0x1fdc,
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0x1ff0,
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0x1ff1,
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0x1ff5,
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0x2072,
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0x2073,
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0x208f,
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0x2700,
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0x2c2f,
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0x2c5f,
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0x2d26,
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0x2d2e,
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0x2d2f,
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0x2da7,
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0x2daf,
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0x2db7,
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0x2dbf,
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0x2dc7,
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0x2dcf,
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0x2dd7,
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0x2ddf,
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0x2e9a,
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0x3040,
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0x3097,
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0x3098,
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0x318f,
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0x321f,
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0x32ff,
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0xa78f,
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0xa9ce,
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0xaa4e,
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0xaa4f,
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0xaa5a,
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0xaa5b,
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0xab07,
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0xab08,
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0xab0f,
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0xab10,
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0xab27,
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0xabee,
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0xabef,
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0xfa6e,
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0xfa6f,
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0xfb37,
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0xfb3d,
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0xfb3f,
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0xfb42,
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0xfb45,
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0xfd90,
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0xfd91,
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0xfdfe,
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0xfdff,
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0xfe53,
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0xfe67,
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0xfe75,
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0xffc8,
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0xffc9,
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0xffd0,
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0xffd1,
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0xffd8,
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0xffd9,
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0xffe7,
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0xfffe,
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0xffff,
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];
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const SINGLETONS1: &'static [u16] = &[
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0xc,
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0x27,
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0x3b,
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0x3e,
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0x4e,
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0x4f,
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0x31f,
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0x39e,
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0x49e,
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0x49f,
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0x806,
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0x807,
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0x809,
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0x836,
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0x83d,
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0x83e,
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0x856,
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0xa04,
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0xa14,
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0xa18,
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0xb56,
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0xb57,
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0x10bd,
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0x1135,
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0xd127,
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0xd128,
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0xd455,
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0xd49d,
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0xd4a0,
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0xd4a1,
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0xd4a3,
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0xd4a4,
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0xd4a7,
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0xd4a8,
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0xd4ad,
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0xd4ba,
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0xd4bc,
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0xd4c4,
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0xd506,
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0xd50b,
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0xd50c,
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0xd515,
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0xd51d,
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0xd53a,
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0xd53f,
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0xd545,
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0xd551,
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0xd6a6,
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0xd6a7,
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0xd7cc,
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0xd7cd,
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0xee04,
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0xee20,
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0xee23,
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0xee25,
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0xee26,
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0xee28,
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0xee33,
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0xee38,
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0xee3a,
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0xee48,
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0xee4a,
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0xee4c,
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0xee50,
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0xee53,
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0xee55,
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0xee56,
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0xee58,
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0xee5a,
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0xee5c,
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0xee5e,
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0xee60,
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0xee63,
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0xee65,
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0xee66,
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0xee6b,
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0xee73,
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0xee78,
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0xee7d,
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0xee7f,
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0xee8a,
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0xeea4,
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0xeeaa,
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0xf0af,
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0xf0b0,
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0xf0bf,
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0xf0c0,
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0xf0d0,
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0xf12f,
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0xf336,
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0xf3c5,
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0xf43f,
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0xf441,
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0xf4f8,
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0xf53e,
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0xf53f,
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];
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const NORMAL0: &'static [u16] = &[
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0x0, 0x20,
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0x7f, 0x22,
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0x37f, 0x5,
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0x528, 0x9,
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0x58b, 0x4,
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0x5c8, 0x8,
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0x5eb, 0x5,
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0x5f5, 0x11,
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0x7b2, 0xe,
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0x7fb, 0x5,
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0x85f, 0x41,
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0x8ad, 0x37,
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0x9b3, 0x3,
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0x9cf, 0x8,
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0x9d8, 0x4,
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0x9fc, 0x5,
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0xa0b, 0x4,
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0xa43, 0x4,
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0xa4e, 0x3,
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0xa52, 0x7,
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0xa5f, 0x7,
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0xa76, 0xb,
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0xad1, 0xf,
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0xaf2, 0xf,
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0xb4e, 0x8,
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0xb58, 0x4,
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0xb78, 0xa,
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0xb8b, 0x3,
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0xb96, 0x3,
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0xba0, 0x3,
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0xba5, 0x3,
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0xbab, 0x3,
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0xbba, 0x4,
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0xbc3, 0x3,
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0xbd1, 0x6,
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0xbd8, 0xe,
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0xbfb, 0x6,
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0xc3a, 0x3,
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0xc4e, 0x7,
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0xc5a, 0x6,
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0xc70, 0x8,
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0xcce, 0x7,
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0xcd7, 0x7,
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0xcf3, 0xf,
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0xd4f, 0x8,
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0xd58, 0x8,
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0xd76, 0x3,
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0xd97, 0x3,
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0xdc7, 0x3,
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0xdcb, 0x4,
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0xde0, 0x12,
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0xdf5, 0xc,
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0xe3b, 0x4,
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0xe5c, 0x25,
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0xe8e, 0x6,
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0xee0, 0x20,
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0xf6d, 0x4,
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0xfdb, 0x25,
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0x10c8, 0x5,
|
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0x137d, 0x3,
|
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0x139a, 0x6,
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0x13f5, 0xb,
|
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0x169d, 0x3,
|
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0x16f1, 0xf,
|
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0x1715, 0xb,
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0x1737, 0x9,
|
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0x1754, 0xc,
|
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0x1774, 0xc,
|
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0x17ea, 0x6,
|
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0x17fa, 0x6,
|
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0x181a, 0x6,
|
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0x1878, 0x8,
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0x18ab, 0x5,
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0x18f6, 0xa,
|
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0x191d, 0x3,
|
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0x192c, 0x4,
|
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0x193c, 0x4,
|
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0x1941, 0x3,
|
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0x1975, 0xb,
|
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0x19ac, 0x4,
|
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0x19ca, 0x6,
|
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0x19db, 0x3,
|
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0x1a8a, 0x6,
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0x1a9a, 0x6,
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0x1aae, 0x52,
|
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0x1b4c, 0x4,
|
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0x1b7d, 0x3,
|
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0x1bf4, 0x8,
|
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0x1c38, 0x3,
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0x1c4a, 0x3,
|
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0x1c80, 0x40,
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0x1cc8, 0x8,
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0x1cf7, 0x9,
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0x1de7, 0x15,
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0x1fff, 0x11,
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0x2028, 0x8,
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0x205f, 0x11,
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0x209d, 0x3,
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0x20ba, 0x16,
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0x20f1, 0xf,
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0x218a, 0x6,
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0x23f4, 0xc,
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0x2427, 0x19,
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0x244b, 0x15,
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0x2b4d, 0x3,
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0x2b5a, 0xa6,
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0x2cf4, 0x5,
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0x2d28, 0x5,
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0x2d68, 0x7,
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0x2d71, 0xe,
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0x2d97, 0x9,
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0x2e3c, 0x44,
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0x2ef4, 0xc,
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0x2fd6, 0x1a,
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0x2ffc, 0x5,
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0x3100, 0x5,
|
|
0x312e, 0x3,
|
|
0x31bb, 0x5,
|
|
0x31e4, 0xc,
|
|
0x3400, 0x19c0,
|
|
0x4e00, 0x5200,
|
|
0xa48d, 0x3,
|
|
0xa4c7, 0x9,
|
|
0xa62c, 0x14,
|
|
0xa698, 0x7,
|
|
0xa6f8, 0x8,
|
|
0xa794, 0xc,
|
|
0xa7ab, 0x4d,
|
|
0xa82c, 0x4,
|
|
0xa83a, 0x6,
|
|
0xa878, 0x8,
|
|
0xa8c5, 0x9,
|
|
0xa8da, 0x6,
|
|
0xa8fc, 0x4,
|
|
0xa954, 0xb,
|
|
0xa97d, 0x3,
|
|
0xa9da, 0x4,
|
|
0xa9e0, 0x20,
|
|
0xaa37, 0x9,
|
|
0xaa7c, 0x4,
|
|
0xaac3, 0x18,
|
|
0xaaf7, 0xa,
|
|
0xab17, 0x9,
|
|
0xab2f, 0x91,
|
|
0xabfa, 0x2bb6,
|
|
0xd7c7, 0x4,
|
|
0xd7fc, 0x2104,
|
|
0xfada, 0x26,
|
|
0xfb07, 0xc,
|
|
0xfb18, 0x5,
|
|
0xfbc2, 0x11,
|
|
0xfd40, 0x10,
|
|
0xfdc8, 0x28,
|
|
0xfe1a, 0x6,
|
|
0xfe27, 0x9,
|
|
0xfe6c, 0x4,
|
|
0xfefd, 0x4,
|
|
0xffbf, 0x3,
|
|
0xffdd, 0x3,
|
|
0xffef, 0xd,
|
|
];
|
|
const NORMAL1: &'static [u16] = &[
|
|
0x5e, 0x22,
|
|
0xfb, 0x5,
|
|
0x103, 0x4,
|
|
0x134, 0x3,
|
|
0x18b, 0x5,
|
|
0x19c, 0x34,
|
|
0x1fe, 0x82,
|
|
0x29d, 0x3,
|
|
0x2d1, 0x2f,
|
|
0x324, 0xc,
|
|
0x34b, 0x35,
|
|
0x3c4, 0x4,
|
|
0x3d6, 0x2a,
|
|
0x4aa, 0x356,
|
|
0x839, 0x3,
|
|
0x860, 0xa0,
|
|
0x91c, 0x3,
|
|
0x93a, 0x5,
|
|
0x940, 0x40,
|
|
0x9b8, 0x6,
|
|
0x9c0, 0x40,
|
|
0xa07, 0x5,
|
|
0xa34, 0x4,
|
|
0xa3b, 0x4,
|
|
0xa48, 0x8,
|
|
0xa59, 0x7,
|
|
0xa80, 0x80,
|
|
0xb36, 0x3,
|
|
0xb73, 0x5,
|
|
0xb80, 0x80,
|
|
0xc49, 0x217,
|
|
0xe7f, 0x181,
|
|
0x104e, 0x4,
|
|
0x1070, 0x10,
|
|
0x10c2, 0xe,
|
|
0x10e9, 0x7,
|
|
0x10fa, 0x6,
|
|
0x1144, 0x3c,
|
|
0x11c9, 0x7,
|
|
0x11da, 0x4a6,
|
|
0x16b8, 0x8,
|
|
0x16ca, 0x936,
|
|
0x236f, 0x91,
|
|
0x2463, 0xd,
|
|
0x2474, 0xb8c,
|
|
0x342f, 0x33d1,
|
|
0x6a39, 0x4c7,
|
|
0x6f45, 0xb,
|
|
0x6f7f, 0x10,
|
|
0x6fa0, 0x4060,
|
|
0xb002, 0x1ffe,
|
|
0xd0f6, 0xa,
|
|
0xd173, 0x8,
|
|
0xd1de, 0x22,
|
|
0xd246, 0xba,
|
|
0xd357, 0x9,
|
|
0xd372, 0x8e,
|
|
0xd547, 0x3,
|
|
0xd800, 0x1600,
|
|
0xee3c, 0x6,
|
|
0xee43, 0x4,
|
|
0xee9c, 0x5,
|
|
0xeebc, 0x34,
|
|
0xeef2, 0x10e,
|
|
0xf02c, 0x4,
|
|
0xf094, 0xc,
|
|
0xf0e0, 0x20,
|
|
0xf10b, 0x5,
|
|
0xf16c, 0x4,
|
|
0xf19b, 0x4b,
|
|
0xf203, 0xd,
|
|
0xf23b, 0x5,
|
|
0xf249, 0x7,
|
|
0xf252, 0xae,
|
|
0xf321, 0xf,
|
|
0xf37d, 0x3,
|
|
0xf394, 0xc,
|
|
0xf3cb, 0x15,
|
|
0xf3f1, 0xf,
|
|
0xf4fd, 0x3,
|
|
0xf544, 0xc,
|
|
0xf568, 0x93,
|
|
0xf641, 0x4,
|
|
0xf650, 0x30,
|
|
0xf6c6, 0x3a,
|
|
0xf774, 0x88c,
|
|
];
|