From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: Help establishing wctype character classes
Date: Sun, 22 Apr 2012 23:51:04 -0400 [thread overview]
Message-ID: <20120423035104.GL14673@brightrain.aerifal.cx> (raw)
In-Reply-To: <20120423014414.GK14673@brightrain.aerifal.cx>
[-- Attachment #1: Type: text/plain, Size: 341 bytes --]
And here's a quick implementation of the iswalnum set generator. At
this point it just generates a dumb lookup table without doing any
multi-level table optimizations or compression, and dumps the table to
stdout in a visual form. I need to run some analysis on the table to
determine the best way to get it down to a reasonable size.
Rich
[-- Attachment #2: gen_ctype_alpha.c --]
[-- Type: text/plain, Size: 1046 bytes --]
#include <stdio.h>
int main()
{
char *set = calloc(0x110000,1);
char buf[128], dummy;
int a, b;
FILE *f;
/* Alphabetic property */
f = fopen("DerivedCoreProperties.txt", "rb");
while (fgets(buf, sizeof buf, f)) {
if (sscanf(buf, "%x..%x ; Alphabetic%c", &a, &b, &dummy)==3)
for (; a<=b; a++) set[a]=1;
else if (sscanf(buf, "%x ; Alphabetic%c", &a, &dummy)==2)
set[a] = 1;
}
fclose(f);
/* Plus Nd category */
f = fopen("UnicodeData.txt", "rb");
while (fgets(buf, sizeof buf, f)) {
if (sscanf(buf, "%x;%*[^;];Nd%c", &a, &dummy)==2)
set[a] = 1;
}
fclose(f);
/* Fix misclassified Thai characters */
set[0xe2f] = set[0xe46] = 0;
/* Fill in elided CJK ranges */
for (a=0x3400; a<=0x4db5; a++) set[a]=1;
for (a=0x4e00; a<=0x9fcc; a++) set[a]=1;
for (a=0xac00; a<=0xd7a3; a++) set[a]=1;
for (a=0x20000; a<=0x2a6d6; a++) set[a]=1;
for (a=0x2a700; a<=0x2b734; a++) set[a]=1;
for (a=0x2b740; a<=0x2b81d; a++) set[a]=1;
for (a=0; a<0x110000; a++) {
putchar(set[a]?'*':'.');
if (!(a+1&63)) putchar('\n');
}
}
prev parent reply other threads:[~2012-04-23 3:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-22 20:41 Rich Felker
2012-04-23 1:44 ` Rich Felker
2012-04-23 3:51 ` Rich Felker [this message]
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