Re: Lack of docs for libpq C Library

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: Pavel Golub <pavel(at)gf(dot)microolap(dot)com>, pgsql-docs(at)postgresql(dot)org
Subject: Re: Lack of docs for libpq C Library
Date: 2008-01-31 16:01:22
Message-ID: 200801311601.m0VG1Mh28607@momjian.us
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Alvaro Herrera wrote:
> Bruce Momjian wrote:
> > Pavel Golub wrote:
> > > Hello, pgsql-docs.
> > >
> > > I noticed that some exported functions are not documented in the
> > > Chapter 30. However, there are some info about them in other chapters,
> > > e.g. PQclientEncoding using is described in chapter 22.2.3 "Automatic
> > > Character Set Conversion Between Server and Client".
> >
> > Though they are exported, the are more for internal use, e.g. psql,
> > rather than something we want people using --- they can change from
> > release to release.
>
> I disagree. I think PQinitSSL is meant to be called from the
> application, for example. Same with PQsetClientEncoding. And the

I see PQinitSSL and PQsetClientEncoding mentioned in the documentation;
is it lacking enough detail?

> PQExpBuffer stuff is all very useful, and years ago when I wrote an app
> to use it it annoyed me that there were no docs on it. (Back then, I
> didn't realize I could have complained about it or written the docs
> myself).

True but we don't guarantee the API of many of these functions like we
do the documented ones.

---------------------------------------------------------------------------

>
>
> > ---------------------------------------------------------------------------
> >
> >
> > >
> > > This is the list of exported functions without docs:
> > > ================
> > > PQclientEncoding
> > > PQsetClientEncoding
> > > PQconninfoFree
> > > PQdsplen
> > > PQenv2encoding
> > > PQinitSSL
> > > PQmblen
> > > PQregisterThreadLock
> > > appendPQExpBuffer
> > > appendPQExpBufferChar
> > > appendPQExpBufferStr
> > > createPQExpBuffer
> > > destroyPQExpBuffer
> > > enlargePQExpBuffer
> > > initPQExpBuffer
> > > appendBinaryPQExpBuffer
> > > pg_char_to_encoding
> > > pg_encoding_to_char
> > > pg_utf_mblen
> > > pg_valid_server_encoding
> > > pgresStatus
> > > pqsignal
> > > printfPQExpBuffer
> > > resetPQExpBuffer
> > > termPQExpBuffer
>
>
> --
> Alvaro Herrera http://www.CommandPrompt.com/
> The PostgreSQL Company - Command Prompt, Inc.
>
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--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com

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