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Diffstat (limited to 'third_party/rust/unicode-bidi/tools/generate.py')
| -rwxr-xr-x | third_party/rust/unicode-bidi/tools/generate.py | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/third_party/rust/unicode-bidi/tools/generate.py b/third_party/rust/unicode-bidi/tools/generate.py deleted file mode 100755 index 288e69702..000000000 --- a/third_party/rust/unicode-bidi/tools/generate.py +++ /dev/null @@ -1,220 +0,0 @@ -#!/usr/bin/env python -# -# Based on src/etc/unicode.py from Rust 1.2.0. -# -# Copyright 2011-2013 The Rust Project Developers. -# Copyright 2015 The Servo Project Developers. See the COPYRIGHT -# file at the top-level directory of this distribution and at -# http://rust-lang.org/COPYRIGHT. -# -# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or -# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license -# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your -# option. This file may not be copied, modified, or distributed -# except according to those terms. - - -import fileinput, re, os, sys, operator - -preamble = '''// NOTE: -// The following code was generated by "tools/generate.py". do not edit directly - -#![allow(missing_docs, non_upper_case_globals, non_snake_case)] -''' - -# these are the surrogate codepoints, which are not valid rust characters -surrogate_codepoints = (0xd800, 0xdfff) - -def fetch(f): - if not os.path.exists(os.path.basename(f)): - os.system("curl -O http://www.unicode.org/Public/UNIDATA/%s" - % f) - - if not os.path.exists(os.path.basename(f)): - sys.stderr.write("cannot load %s" % f) - exit(1) - -def is_surrogate(n): - return surrogate_codepoints[0] <= n <= surrogate_codepoints[1] - -def load_unicode_data(f): - fetch(f) - udict = {}; - - range_start = -1; - for line in fileinput.input(f): - data = line.split(';'); - if len(data) != 15: - continue - cp = int(data[0], 16); - if is_surrogate(cp): - continue - if range_start >= 0: - for i in xrange(range_start, cp): - udict[i] = data; - range_start = -1; - if data[1].endswith(", First>"): - range_start = cp; - continue; - udict[cp] = data; - - # Mapping of code point to Bidi_Class property: - bidi_class = {} - - for code in udict: - [code_org, name, gencat, combine, bidi, - decomp, deci, digit, num, mirror, - old, iso, upcase, lowcase, titlecase ] = udict[code]; - - if bidi not in bidi_class: - bidi_class[bidi] = [] - bidi_class[bidi].append(code) - - # Default Bidi_Class for unassigned codepoints. - # http://www.unicode.org/Public/UNIDATA/extracted/DerivedBidiClass.txt - default_ranges = [ - (0x0600, 0x07BF, "AL"), (0x08A0, 0x08FF, "AL"), - (0xFB50, 0xFDCF, "AL"), (0xFDF0, 0xFDFF, "AL"), - (0xFE70, 0xFEFF, "AL"), (0x1EE00, 0x0001EEFF, "AL"), - - (0x0590, 0x05FF, "R"), (0x07C0, 0x089F, "R"), - (0xFB1D, 0xFB4F, "R"), (0x00010800, 0x00010FFF, "R"), - (0x0001E800, 0x0001EDFF, "R"), (0x0001EF00, 0x0001EFFF, "R"), - - (0x20A0, 0x20CF, "ET")] - - for (start, end, default) in default_ranges: - for code in range(start, end+1): - if not code in udict: - bidi_class[default].append(code) - - bidi_class = group_cats(bidi_class) - return bidi_class - -def group_cats(cats): - cats_out = [] - for cat in cats: - cats_out.extend([(x, y, cat) for (x, y) in group_cat(cats[cat])]) - cats_out.sort(key=lambda w: w[0]) - return (sorted(cats.keys()), cats_out) - -def group_cat(cat): - cat_out = [] - letters = sorted(set(cat)) - cur_start = letters.pop(0) - cur_end = cur_start - for letter in letters: - assert letter > cur_end, \ - "cur_end: %s, letter: %s" % (hex(cur_end), hex(letter)) - if letter == cur_end + 1: - cur_end = letter - else: - cat_out.append((cur_start, cur_end)) - cur_start = cur_end = letter - cat_out.append((cur_start, cur_end)) - return cat_out - -def format_table_content(f, content, indent): - line = " "*indent - first = True - for chunk in content.split(","): - if len(line) + len(chunk) < 98: - if first: - line += chunk - else: - line += ", " + chunk - first = False - else: - f.write(line + ",\n") - line = " "*indent + chunk - f.write(line) - -def escape_char(c): - return "'\\u{%x}'" % c - -def emit_table(f, name, t_data, t_type = "&'static [(char, char)]", is_pub=True, - pfun=lambda x: "(%s,%s)" % (escape_char(x[0]), escape_char(x[1]))): - pub_string = "" - if is_pub: - pub_string = "pub " - f.write(" %sconst %s: %s = &[\n" % (pub_string, name, t_type)) - data = "" - first = True - for dat in t_data: - if not first: - data += "," - first = False - data += pfun(dat) - format_table_content(f, data, 8) - f.write("\n ];\n\n") - -def emit_bidi_module(f, bidi_class, cats): - f.write("""pub use self::BidiClass::*; - - #[allow(non_camel_case_types)] - #[derive(Clone, Copy, Debug, PartialEq, Eq)] - /// Represents the Unicode character property **Bidi_Class**, also known as - /// the *bidirectional character type*. - /// - /// Use the `bidi_class` function to look up the BidiClass of a code point. - /// - /// http://www.unicode.org/reports/tr9/#Bidirectional_Character_Types - pub enum BidiClass { -""") - for cat in cats: - f.write(" " + cat + ",\n") - f.write(""" } - - fn bsearch_range_value_table(c: char, r: &'static [(char, char, BidiClass)]) -> BidiClass { - use ::std::cmp::Ordering::{Equal, Less, Greater}; - match r.binary_search_by(|&(lo, hi, _)| { - if lo <= c && c <= hi { Equal } - else if hi < c { Less } - else { Greater } - }) { - Ok(idx) => { - let (_, _, cat) = r[idx]; - cat - } - // UCD/extracted/DerivedBidiClass.txt: "All code points not explicitly listed - // for Bidi_Class have the value Left_To_Right (L)." - Err(_) => L - } - } - - /// Find the BidiClass of a single char. - pub fn bidi_class(c: char) -> BidiClass { - bsearch_range_value_table(c, bidi_class_table) - } - -""") - - emit_table(f, "bidi_class_table", bidi_class, "&'static [(char, char, BidiClass)]", - pfun=lambda x: "(%s,%s,%s)" % (escape_char(x[0]), escape_char(x[1]), x[2]), - is_pub=False) - -if __name__ == "__main__": - os.chdir("../src/") # changing download path to /unicode-bidi/src/ - r = "tables.rs" - # downloading the test case files - fetch("BidiTest.txt") - fetch("BidiCharacterTest.txt") - - if os.path.exists(r): - os.remove(r) - with open(r, "w") as rf: - # write the file's preamble - rf.write(preamble) - - # download and parse all the data - fetch("ReadMe.txt") - with open("ReadMe.txt") as readme: - pattern = "for Version (\d+)\.(\d+)\.(\d+) of the Unicode" - unicode_version = re.search(pattern, readme.read()).groups() - rf.write(""" -/// The version of [Unicode](http://www.unicode.org/) -/// that the `bidi_class` function is based on. -pub const UNICODE_VERSION: (u64, u64, u64) = (%s, %s, %s); -""" % unicode_version) - (bidi_cats, bidi_class) = load_unicode_data("UnicodeData.txt") - emit_bidi_module(rf, bidi_class, bidi_cats) |