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Top Forums Shell Programming and Scripting script to separate bilingual text file Post 302414903 by alister on Wednesday 21st of April 2010 09:23:01 AM
Old 04-21-2010
As jim mentioned above, all Assamese characters begin with a byte sequence that is not present in English text. So, differentiating between the two is easy enough.

From what I gathered, Assamese script uses characters that are also used in Bengali, and their Unicode range is 0x0980-0x09FF, which when encoded into UTF-8 is a range of three-byte sequences: 11100000 10100110 10000000 - 11100000 10100111 10111111 (hopefully I didn't mess that up Smilie).

The leading byte's value in that range is always 0xe0 (0340 octal, 224 decimal). We can test for its presence with AWK:
Code:
awk '/\xe0/ {print > "assamese"; next} {print > "english"}' data

Regards,
Alister

Last edited by alister; 04-21-2010 at 10:51 AM..
 

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GB18030(5)						      BSD File Formats Manual							GB18030(5)

NAME
gb18030 -- GB 18030 encoding method for Chinese text SYNOPSIS
ENCODING "GB18030" DESCRIPTION
The GB18030 encoding implements GB 18030-2000, a PRC national standard for the encoding of Chinese characters. It is a superset of the older GB 2312-1980 and GBK encodings, and incorporates Unicode's Unihan Extension A completely. It also provides code space for all Unicode 3.0 code points. Multibyte characters in the GB18030 encoding can be one byte, two bytes, or four bytes long. There are a total of over 1.5 million code positions. GB 11383-1981 (ASCII) characters are represented by single bytes in the range 0x00 to 0x7F. Chinese characters are represented as either two bytes or four bytes. Characters that are represented by two bytes begin with a byte in the range 0x81-0xFE and end with a byte either in the range 0x40-0x7E or 0x80-0xFE. Characters that are represented by four bytes begin with a byte in the range 0x81-0xFE, have a second byte in the range 0x30-0x39, a third byte in the range 0x81-0xFE and a fourth byte in the range 0x30-0x39. SEE ALSO
euc(5), gb2312(5), gbk(5), utf8(5) Chinese National Standard GB 18030-2000: Information Technology -- Chinese ideograms coded character set for information interchange -- Extension for the basic set, March 2000. The Unicode Standard, Version 3.0, The Unicode Consortium, 2000. STANDARDS
The GB18030 encoding is believed to be compatible with GB 18030-2000. BSD
August 10, 2003 BSD
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