Re: [pdf-devel] Proposal of API for the Encoded Text module

[Aleksander Morgado]

> Just one other thing to remember is that PDF Names are either a subset
> of PDDocEncoding _OR_ they are valid UTF8 strings.  (See PDFRef 1.7,
> 3.2.4).
>
> Leonard

In fact, I think that this is one of the reasons to have the UTF-8 
built-in support in the library. I suppose that PDF Name and PDF String 
types in the `object library' will be based on the pdf_text_t from the 
`base library', which directly supports UTF-8.

Anyway, are you sure that these two encodings are the only ones allowed 
for PDF Names? In older Acrobat versions PDF Names could be encoded in 
specific `host encodings', like Shift-JIS or Big Five for Asian 
languages (PDFRef 1.7, H.3).

If this is the case, how can we detect the encoding being used in the 
PDF Name? For example, a PDF with a japanese encoding for PDF names 
which is read in a US-localized system... What the present text module 
API provides so far is a function to detect the best encoding for a 
given Unicode string, and not a function to detect the encoding being 
used in a given multibyte string. Something like this could also be 
needed, but I am not sure if this is possible to implement.

--
Aleksander