mirror of
https://git.meli.delivery/meli/meli
synced 2024-10-30 21:20:34 +00:00
427 lines
16 KiB
Rust
427 lines
16 KiB
Rust
/*
|
|
* meli - melib crate.
|
|
*
|
|
* Copyright 2017-2020 Manos Pitsidianakis
|
|
*
|
|
* This file is part of meli.
|
|
*
|
|
* meli is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* meli is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with meli. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#[cfg(feature = "unicode_algorithms")]
|
|
include!("src/text_processing/types.rs");
|
|
|
|
fn main() -> Result<(), std::io::Error> {
|
|
#[cfg(feature = "unicode_algorithms")]
|
|
{
|
|
const MOD_PATH: &str = "src/text_processing/tables.rs";
|
|
println!("cargo:rerun-if-changed=build.rs");
|
|
println!("cargo:rerun-if-changed={}", MOD_PATH);
|
|
/* Line break tables */
|
|
use std::fs::File;
|
|
use std::io::prelude::*;
|
|
use std::io::BufReader;
|
|
use std::path::Path;
|
|
use std::process::{Command, Stdio};
|
|
const LINE_BREAK_TABLE_URL: &str =
|
|
"http://www.unicode.org/Public/UCD/latest/ucd/LineBreak.txt";
|
|
/* Grapheme width tables */
|
|
const UNICODE_DATA_URL: &str =
|
|
"http://www.unicode.org/Public/UCD/latest/ucd/UnicodeData.txt";
|
|
const EAW_URL: &str = "http://www.unicode.org/Public/UCD/latest/ucd/EastAsianWidth.txt";
|
|
const EMOJI_DATA_URL: &str =
|
|
"https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt";
|
|
|
|
let mod_path = Path::new(MOD_PATH);
|
|
if mod_path.exists() {
|
|
eprintln!(
|
|
"{} already exists, delete it if you want to replace it.",
|
|
mod_path.display()
|
|
);
|
|
std::process::exit(0);
|
|
}
|
|
let mut child = Command::new("curl")
|
|
.args(&["-o", "-", LINE_BREAK_TABLE_URL])
|
|
.stdout(Stdio::piped())
|
|
.stdin(Stdio::null())
|
|
.stderr(Stdio::inherit())
|
|
.spawn()?;
|
|
|
|
let buf_reader = BufReader::new(child.stdout.take().unwrap());
|
|
|
|
let mut line_break_table: Vec<(u32, u32, LineBreakClass)> = Vec::with_capacity(3800);
|
|
for line in buf_reader.lines() {
|
|
let line = line.unwrap();
|
|
if line.starts_with('#') || line.starts_with(' ') || line.is_empty() {
|
|
continue;
|
|
}
|
|
let tokens: &str = line.split_whitespace().next().unwrap();
|
|
|
|
let semicolon_idx: usize = tokens.chars().position(|c| c == ';').unwrap();
|
|
/* LineBreak.txt list is ascii encoded so we can assume each char takes one byte: */
|
|
let chars_str: &str = &tokens[..semicolon_idx];
|
|
|
|
let mut codepoint_iter = chars_str.split("..");
|
|
|
|
let first_codepoint: u32 =
|
|
u32::from_str_radix(codepoint_iter.next().unwrap(), 16).unwrap();
|
|
|
|
let sec_codepoint: u32 = codepoint_iter
|
|
.next()
|
|
.map(|v| u32::from_str_radix(v, 16).unwrap())
|
|
.unwrap_or(first_codepoint);
|
|
let class = &tokens[semicolon_idx + 1..semicolon_idx + 1 + 2];
|
|
line_break_table.push((first_codepoint, sec_codepoint, LineBreakClass::from(class)));
|
|
}
|
|
child.wait()?;
|
|
|
|
let child = Command::new("curl")
|
|
.args(&["-o", "-", UNICODE_DATA_URL])
|
|
.stdout(Stdio::piped())
|
|
.output()?;
|
|
|
|
let unicode_data = String::from_utf8_lossy(&child.stdout);
|
|
|
|
let child = Command::new("curl")
|
|
.args(&["-o", "-", EAW_URL])
|
|
.stdout(Stdio::piped())
|
|
.output()?;
|
|
|
|
let eaw_data = String::from_utf8_lossy(&child.stdout);
|
|
|
|
let child = Command::new("curl")
|
|
.args(&["-o", "-", EMOJI_DATA_URL])
|
|
.stdout(Stdio::piped())
|
|
.output()?;
|
|
|
|
let emoji_data = String::from_utf8_lossy(&child.stdout);
|
|
|
|
const MAX_CODEPOINT: usize = 0x110000;
|
|
// See https://www.unicode.org/L2/L1999/UnicodeData.html
|
|
const FIELD_CODEPOINT: usize = 0;
|
|
const FIELD_CATEGORY: usize = 2;
|
|
// Ambiguous East Asian characters
|
|
const WIDTH_AMBIGUOUS_EASTASIAN: isize = -3;
|
|
|
|
// Width changed from 1 to 2 in Unicode 9.0
|
|
const WIDTH_WIDENED_IN_9: isize = -6;
|
|
// Category for unassigned codepoints.
|
|
const CAT_UNASSIGNED: &str = "Cn";
|
|
|
|
// Category for private use codepoints.
|
|
const CAT_PRIVATE_USE: &str = "Co";
|
|
|
|
// Category for surrogates.
|
|
const CAT_SURROGATE: &str = "Cs";
|
|
|
|
struct Codepoint<'cat> {
|
|
raw: u32,
|
|
width: Option<isize>,
|
|
category: &'cat str,
|
|
}
|
|
|
|
let mut codepoints: Vec<Codepoint> = Vec::with_capacity(MAX_CODEPOINT + 1);
|
|
for i in 0..=MAX_CODEPOINT {
|
|
codepoints.push(Codepoint {
|
|
raw: i as u32,
|
|
width: None,
|
|
category: CAT_UNASSIGNED,
|
|
});
|
|
}
|
|
|
|
set_general_categories(&mut codepoints, &unicode_data);
|
|
set_eaw_widths(&mut codepoints, &eaw_data);
|
|
set_emoji_widths(&mut codepoints, &emoji_data);
|
|
set_hardcoded_ranges(&mut codepoints);
|
|
fn hexrange_to_range(hexrange: &str) -> std::ops::Range<usize> {
|
|
/* Given a string like 1F300..1F320 representing an inclusive range,
|
|
return the range of codepoints.
|
|
If the string is like 1F321, return a range of just that element.
|
|
*/
|
|
let hexrange = hexrange.trim();
|
|
let fields = hexrange
|
|
.split("..")
|
|
.map(|h| usize::from_str_radix(h.trim(), 16).unwrap())
|
|
.collect::<Vec<usize>>();
|
|
if fields.len() == 1 {
|
|
fields[0]..(fields[0] + 1)
|
|
} else {
|
|
fields[0]..(fields[1] + 1)
|
|
}
|
|
}
|
|
|
|
fn set_general_categories<'u>(codepoints: &mut [Codepoint<'u>], unicode_data: &'u str) {
|
|
for line in unicode_data.lines() {
|
|
let fields = line.trim().split(';').collect::<Vec<_>>();
|
|
if fields.len() > FIELD_CATEGORY {
|
|
for idx in hexrange_to_range(fields[FIELD_CODEPOINT]) {
|
|
codepoints[idx].category = fields[FIELD_CATEGORY];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn set_eaw_widths(codepoints: &mut [Codepoint<'_>], eaw_data_lines: &str) {
|
|
// Read from EastAsianWidth.txt, set width values on the codepoints
|
|
for line in eaw_data_lines.lines() {
|
|
let line = line.trim().split('#').next().unwrap_or(line);
|
|
let fields = line.trim().split(';').collect::<Vec<_>>();
|
|
if fields.len() != 2 {
|
|
continue;
|
|
}
|
|
let hexrange = fields[0];
|
|
let width_type = fields[1];
|
|
// width_types:
|
|
// A: ambiguous, F: fullwidth, H: halfwidth,
|
|
// . N: neutral, Na: east-asian Narrow
|
|
let width: isize = if width_type == "A" {
|
|
WIDTH_AMBIGUOUS_EASTASIAN
|
|
} else if width_type == "F" || width_type == "W" {
|
|
2
|
|
} else {
|
|
1
|
|
};
|
|
for cp in hexrange_to_range(hexrange) {
|
|
codepoints[cp].width = Some(width);
|
|
}
|
|
}
|
|
// Apply the following special cases:
|
|
// - The unassigned code points in the following blocks default to "W":
|
|
// CJK Unified Ideographs Extension A: U+3400..U+4DBF
|
|
// CJK Unified Ideographs: U+4E00..U+9FFF
|
|
// CJK Compatibility Ideographs: U+F900..U+FAFF
|
|
// - All undesignated code points in Planes 2 and 3, whether inside or
|
|
// outside of allocated blocks, default to "W":
|
|
// Plane 2: U+20000..U+2FFFD
|
|
// Plane 3: U+30000..U+3FFFD
|
|
const WIDE_RANGES: [(usize, usize); 5] = [
|
|
(0x3400, 0x4DBF),
|
|
(0x4E00, 0x9FFF),
|
|
(0xF900, 0xFAFF),
|
|
(0x20000, 0x2FFFD),
|
|
(0x30000, 0x3FFFD),
|
|
];
|
|
for &wr in WIDE_RANGES.iter() {
|
|
for cp in wr.0..(wr.1 + 1) {
|
|
if codepoints[cp].width.is_none() {
|
|
codepoints[cp].width = Some(2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn set_emoji_widths(codepoints: &mut [Codepoint<'_>], emoji_data_lines: &str) {
|
|
// Read from emoji-data.txt, set codepoint widths
|
|
for line in emoji_data_lines.lines() {
|
|
if !line.contains('#') || line.trim().starts_with('#') {
|
|
continue;
|
|
}
|
|
let mut fields = line.trim().split('#').collect::<Vec<_>>();
|
|
if fields.len() != 2 {
|
|
continue;
|
|
}
|
|
let comment = fields.pop().unwrap();
|
|
let fields = fields.pop().unwrap();
|
|
|
|
let hexrange = fields.split(';').next().unwrap();
|
|
|
|
// In later versions of emoji-data.txt there are some "reserved"
|
|
// entries that have "NA" instead of a Unicode version number
|
|
// of first use, they will now return a zero version instead of
|
|
// crashing the script
|
|
if comment.trim().starts_with("NA") {
|
|
continue;
|
|
}
|
|
|
|
use std::str::FromStr;
|
|
let mut v = comment.trim().split_whitespace().next().unwrap();
|
|
if v.starts_with('E') {
|
|
v = &v[1..];
|
|
}
|
|
if v.as_bytes()
|
|
.get(0)
|
|
.map(|c| !c.is_ascii_digit())
|
|
.unwrap_or(true)
|
|
{
|
|
continue;
|
|
}
|
|
let mut idx = 1;
|
|
while v
|
|
.as_bytes()
|
|
.get(idx)
|
|
.map(|c| c.is_ascii_digit())
|
|
.unwrap_or(false)
|
|
{
|
|
idx += 1;
|
|
}
|
|
if v.as_bytes().get(idx).map(|&c| c != b'.').unwrap_or(true) {
|
|
continue;
|
|
}
|
|
idx += 1;
|
|
while v
|
|
.as_bytes()
|
|
.get(idx)
|
|
.map(|c| c.is_ascii_digit())
|
|
.unwrap_or(false)
|
|
{
|
|
idx += 1;
|
|
}
|
|
v = &v[0..idx];
|
|
|
|
let version = f32::from_str(v).unwrap();
|
|
for cp in hexrange_to_range(hexrange) {
|
|
// Don't consider <=1F000 values as emoji. These can only be made
|
|
// emoji through the variation selector which interacts terribly
|
|
// with wcwidth().
|
|
if cp < 0x1F000 {
|
|
continue;
|
|
}
|
|
// Skip codepoints that are explicitly not wide.
|
|
// For example U+1F336 ("Hot Pepper") renders like any emoji but is
|
|
// marked as neutral in EAW so has width 1 for some reason.
|
|
//if codepoints[cp].width == Some(1) {
|
|
// continue;
|
|
//}
|
|
|
|
// If this emoji was introduced before Unicode 9, then it was widened in 9.
|
|
codepoints[cp].width = if version >= 9.0 {
|
|
Some(2)
|
|
} else {
|
|
Some(WIDTH_WIDENED_IN_9)
|
|
};
|
|
}
|
|
}
|
|
}
|
|
fn set_hardcoded_ranges(codepoints: &mut [Codepoint<'_>]) {
|
|
// Mark private use and surrogate codepoints
|
|
// Private use can be determined awkwardly from UnicodeData.txt,
|
|
// but we just hard-code them.
|
|
// We do not treat "private use high surrogate" as private use
|
|
// so as to match wcwidth9().
|
|
const PRIVATE_RANGES: [(usize, usize); 3] =
|
|
[(0xE000, 0xF8FF), (0xF0000, 0xFFFFD), (0x100000, 0x10FFFD)];
|
|
for &(first, last) in PRIVATE_RANGES.iter() {
|
|
for idx in first..=last {
|
|
codepoints[idx].category = CAT_PRIVATE_USE;
|
|
}
|
|
}
|
|
|
|
const SURROGATE_RANGES: [(usize, usize); 2] = [(0xD800, 0xDBFF), (0xDC00, 0xDFFF)];
|
|
for &(first, last) in SURROGATE_RANGES.iter() {
|
|
for idx in first..=last {
|
|
codepoints[idx].category = CAT_SURROGATE;
|
|
}
|
|
}
|
|
}
|
|
|
|
let mut file = File::create(&mod_path)?;
|
|
file.write_all(
|
|
br#"/*
|
|
* meli - text_processing crate.
|
|
*
|
|
* Copyright 2017-2020 Manos Pitsidianakis
|
|
*
|
|
* This file is part of meli.
|
|
*
|
|
* meli is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* meli is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with meli. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
use super::types::LineBreakClass::{self, *};
|
|
|
|
pub const LINE_BREAK_RULES: &[(u32, u32, LineBreakClass)] = &[
|
|
"#,
|
|
)
|
|
.unwrap();
|
|
for l in &line_break_table {
|
|
file.write_all(format!(" (0x{:X}, 0x{:X}, {:?}),\n", l.0, l.1, l.2).as_bytes())
|
|
.unwrap();
|
|
}
|
|
file.write_all(b"];\n").unwrap();
|
|
|
|
for (name, filter) in [
|
|
(
|
|
"ASCII",
|
|
Box::new(|c: &&Codepoint| c.raw < 0x7f && c.raw >= 0x20)
|
|
as Box<dyn Fn(&&Codepoint) -> bool>,
|
|
),
|
|
(
|
|
"PRIVATE",
|
|
Box::new(|c: &&Codepoint| c.category == CAT_PRIVATE_USE),
|
|
),
|
|
(
|
|
"NONPRINT",
|
|
Box::new(|c: &&Codepoint| {
|
|
["Cc", "Cf", "Zl", "Zp", CAT_SURROGATE].contains(&c.category)
|
|
}),
|
|
),
|
|
(
|
|
"COMBINING",
|
|
Box::new(|c: &&Codepoint| ["Mn", "Mc", "Me"].contains(&c.category)),
|
|
),
|
|
("DOUBLEWIDE", Box::new(|c: &&Codepoint| c.width == Some(2))),
|
|
(
|
|
"UNASSIGNED",
|
|
Box::new(|c: &&Codepoint| c.category == CAT_UNASSIGNED),
|
|
),
|
|
(
|
|
"AMBIGUOUS",
|
|
Box::new(|c: &&Codepoint| c.width == Some(WIDTH_AMBIGUOUS_EASTASIAN)),
|
|
),
|
|
(
|
|
"WIDENEDIN9",
|
|
Box::new(|c: &&Codepoint| c.width == Some(WIDTH_WIDENED_IN_9)),
|
|
),
|
|
]
|
|
.iter()
|
|
{
|
|
file.write_all(
|
|
format!(
|
|
r#"
|
|
pub const {}: &[(u32, u32)] = &[
|
|
"#,
|
|
name
|
|
)
|
|
.as_bytes(),
|
|
)
|
|
.unwrap();
|
|
let mut iter = codepoints.iter().filter(filter);
|
|
let mut prev = iter.next().unwrap().raw;
|
|
let mut a = prev;
|
|
for cp in iter {
|
|
if prev + 1 != cp.raw {
|
|
file.write_all(format!(" (0x{:X}, 0x{:X}),\n", a, prev).as_bytes())
|
|
.unwrap();
|
|
a = cp.raw;
|
|
}
|
|
prev = cp.raw;
|
|
}
|
|
file.write_all(format!(" (0x{:X}, 0x{:X}),\n", a, prev).as_bytes())
|
|
.unwrap();
|
|
file.write_all(b"];\n").unwrap();
|
|
}
|
|
}
|
|
Ok(())
|
|
}
|