Message-ID: <b8bbaed3-1fc9-d76f-7ed0-707aa769e5e0@asilaycomputing.com>
Date: 2017-03-19T06:31:57Z
From: Sahil Kang
Subject: [PATCH] Improve utf8clen and remove utf8_table4
Given a char `c' which should be the start byte of a utf8 character,
the utf8clen function returns the byte length of the utf8 character.
Before this patch, the utf8clen function would return either:
* 1 if `c' was an ascii character or a utf8 continuation byte
* An int in the range [2, 6] indicating the byte length of the utf8
character
With this patch, the utf8clen function will now return either:
* -1 if `c' is not a valid utf8 start byte
* The byte length of the utf8 character (the number of leading 1's,
really)
I believe returning -1 for continuation bytes makes utf8clen less error
prone.
The utf8_table4 array is no longer needed and has been removed.
Sahil
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