Lexvo.org Technical Details

Term URIs

Given a term t in a language L, the URI is constructed as follows:

The term t is encoded using Unicode, and the NFC normalization procedure is applied to ensure a unique representation. Conventional unnormalized Unicode allows encoding a character such as "à" in either a composed or in a decomposed form.
The resulting Unicode code point string is encoded in UTF-8 to obtain a sequence of octets.
These octet values are converted to an ASCII path segment by applying percent-encoding as per RFC 3986. Unacceptable characters as well as the "%" character are encoded as character triplets of the form %4D with the respective octet value stored as two upper-case hexadecimal digits.
The base address http://www.lexvo.org/id/term/ as well as the ISO 639-3 code for the language L followed by the "/" character are prepended to this path segment to obtain a complete URI.

A term URI generated in this way refers to the term t in language L.

Language URIs

Language URIs consist of the base address http://www.lexvo.org/id/iso639-3/ followed by an ISO 639-3 language code that is not defined as a special code. A language URI abiding to this specification refers to the language denoted by the language code according to the ISO 639-3 standard.

Script URIs

Script URIs consist of the base address http://www.lexvo.org/id/script/ followed by an ISO 15924 script code other than Zxxx, Zyyy, Zzzz. A script URI abiding to this specification refers to the script denoted by the code according to the ISO 15924 standard.

Character URIs

Character URIs consist of the base address http://www.lexvo.org/id/char/, followed by a Unicode code point in upper-case hexadecimal notation with zero-padding to 4 digits if shorter than 4 digits, and without additional zero-padding if longer. A character URI abiding to this specification refers to the character denoted by the code point according to the Unicode 5.0 standard.

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