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Diffstat (limited to 'unicode-width/scripts/unicode.py')
| -rwxr-xr-x | unicode-width/scripts/unicode.py | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/unicode-width/scripts/unicode.py b/unicode-width/scripts/unicode.py deleted file mode 100755 index 5456ee3..0000000 --- a/unicode-width/scripts/unicode.py +++ /dev/null @@ -1,321 +0,0 @@ -#!/usr/bin/env python3 -# -# Copyright 2011-2015 The Rust 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. - -# This script uses the following Unicode tables: -# - EastAsianWidth.txt -# - ReadMe.txt -# - UnicodeData.txt -# -# Since this should not require frequent updates, we just store this -# out-of-line and check the unicode.rs file into git. - -import fileinput, re, os, sys, operator - -preamble = '''// Copyright 2012-2015 The Rust 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. - -// NOTE: The following code was generated by "scripts/unicode.py", do not edit directly - -#![allow(missing_docs, non_upper_case_globals, non_snake_case)] -''' - -# Mapping taken from Table 12 from: -# http://www.unicode.org/reports/tr44/#General_Category_Values -expanded_categories = { - 'Lu': ['LC', 'L'], 'Ll': ['LC', 'L'], 'Lt': ['LC', 'L'], - 'Lm': ['L'], 'Lo': ['L'], - 'Mn': ['M'], 'Mc': ['M'], 'Me': ['M'], - 'Nd': ['N'], 'Nl': ['N'], 'No': ['No'], - 'Pc': ['P'], 'Pd': ['P'], 'Ps': ['P'], 'Pe': ['P'], - 'Pi': ['P'], 'Pf': ['P'], 'Po': ['P'], - 'Sm': ['S'], 'Sc': ['S'], 'Sk': ['S'], 'So': ['S'], - 'Zs': ['Z'], 'Zl': ['Z'], 'Zp': ['Z'], - 'Cc': ['C'], 'Cf': ['C'], 'Cs': ['C'], 'Co': ['C'], 'Cn': ['C'], -} - -# 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) - gencats = {} - - 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 range(range_start, cp): - udict[i] = data - range_start = -1 - if data[1].endswith(", First>"): - range_start = cp - continue - udict[cp] = data - - for code in udict: - [code_org, name, gencat, combine, bidi, - decomp, deci, digit, num, mirror, - old, iso, upcase, lowcase, titlecase ] = udict[code] - - # place letter in categories as appropriate - for cat in [gencat, "Assigned"] + expanded_categories.get(gencat, []): - if cat not in gencats: - gencats[cat] = [] - gencats[cat].append(code) - - gencats = group_cats(gencats) - - return gencats - -def group_cats(cats): - cats_out = {} - for cat in cats: - cats_out[cat] = group_cat(cats[cat]) - return 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) - -# load all widths of want_widths, except those in except_cats -def load_east_asian_width(want_widths, except_cats): - f = "EastAsianWidth.txt" - fetch(f) - widths = {} - re1 = re.compile("^([0-9A-F]+);(\w+) +# (\w+)") - re2 = re.compile("^([0-9A-F]+)\.\.([0-9A-F]+);(\w+) +# (\w+)") - - for line in fileinput.input(f): - width = None - d_lo = 0 - d_hi = 0 - cat = None - m = re1.match(line) - if m: - d_lo = m.group(1) - d_hi = m.group(1) - width = m.group(2) - cat = m.group(3) - else: - m = re2.match(line) - if m: - d_lo = m.group(1) - d_hi = m.group(2) - width = m.group(3) - cat = m.group(4) - else: - continue - if cat in except_cats or width not in want_widths: - continue - d_lo = int(d_lo, 16) - d_hi = int(d_hi, 16) - if width not in widths: - widths[width] = [] - widths[width].append((d_lo, d_hi)) - return widths - -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])), is_const=True): - pub_string = "const" - if not is_const: - pub_string = "let" - if is_pub: - pub_string = "pub " + pub_string - f.write(" %s %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_charwidth_module(f, width_table): - f.write("pub mod charwidth {") - f.write(""" - use core::option::Option::{self, Some, None}; - use core::result::Result::{Ok, Err}; - - #[inline] - fn bsearch_range_value_table(c: char, is_cjk: bool, r: &'static [(char, char, u8, u8)]) -> u8 { - use core::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 (_, _, r_ncjk, r_cjk) = r[idx]; - if is_cjk { r_cjk } else { r_ncjk } - } - Err(_) => 1 - } - } -""") - - f.write(""" - #[inline] - pub fn width(c: char, is_cjk: bool) -> Option<usize> { - match c as usize { - _c @ 0 => Some(0), // null is zero width - cu if cu < 0x20 => None, // control sequences have no width - cu if cu < 0x7F => Some(1), // ASCII - cu if cu < 0xA0 => None, // more control sequences - _ => Some(bsearch_range_value_table(c, is_cjk, charwidth_table) as usize) - } - } - -""") - - f.write(" // character width table. Based on Markus Kuhn's free wcwidth() implementation,\n") - f.write(" // http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c\n") - emit_table(f, "charwidth_table", width_table, "&'static [(char, char, u8, u8)]", is_pub=False, - pfun=lambda x: "(%s,%s,%s,%s)" % (escape_char(x[0]), escape_char(x[1]), x[2], x[3])) - f.write("}\n\n") - -def remove_from_wtable(wtable, val): - wtable_out = [] - while wtable: - if wtable[0][1] < val: - wtable_out.append(wtable.pop(0)) - elif wtable[0][0] > val: - break - else: - (wt_lo, wt_hi, width, width_cjk) = wtable.pop(0) - if wt_lo == wt_hi == val: - continue - elif wt_lo == val: - wtable_out.append((wt_lo+1, wt_hi, width, width_cjk)) - elif wt_hi == val: - wtable_out.append((wt_lo, wt_hi-1, width, width_cjk)) - else: - wtable_out.append((wt_lo, val-1, width, width_cjk)) - wtable_out.append((val+1, wt_hi, width, width_cjk)) - if wtable: - wtable_out.extend(wtable) - return wtable_out - - - -def optimize_width_table(wtable): - wtable_out = [] - w_this = wtable.pop(0) - while wtable: - if w_this[1] == wtable[0][0] - 1 and w_this[2:3] == wtable[0][2:3]: - w_tmp = wtable.pop(0) - w_this = (w_this[0], w_tmp[1], w_tmp[2], w_tmp[3]) - else: - wtable_out.append(w_this) - w_this = wtable.pop(0) - wtable_out.append(w_this) - return wtable_out - -if __name__ == "__main__": - r = "tables.rs" - 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 this version of unicode-width is based on. -pub const UNICODE_VERSION: (u64, u64, u64) = (%s, %s, %s); - -""" % unicode_version) - gencats = load_unicode_data("UnicodeData.txt") - - ### character width module - width_table = [] - for zwcat in ["Me", "Mn", "Cf"]: - width_table.extend([(lo_hi[0], lo_hi[1], 0, 0) for lo_hi in gencats[zwcat]]) - width_table.append((4448, 4607, 0, 0)) - - # get widths, except those that are explicitly marked zero-width above - ea_widths = load_east_asian_width(["W", "F", "A"], ["Me", "Mn", "Cf"]) - # these are doublewidth - for dwcat in ["W", "F"]: - width_table.extend([(lo_hi1[0], lo_hi1[1], 2, 2) for lo_hi1 in ea_widths[dwcat]]) - width_table.extend([(lo_hi2[0], lo_hi2[1], 1, 2) for lo_hi2 in ea_widths["A"]]) - - width_table.sort(key=lambda w: w[0]) - - # soft hyphen is not zero width in preformatted text; it's used to indicate - # a hyphen inserted to facilitate a linebreak. - width_table = remove_from_wtable(width_table, 173) - - # optimize the width table by collapsing adjacent entities when possible - width_table = optimize_width_table(width_table) - emit_charwidth_module(rf, width_table) |