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readline	recode_file

view the version of this page	Last updated: Sat, 19 Apr 2003

LXXXVII. GNU Recode Funktionen

Dieses Modul stellt eine Schnittstelle zu der GNU Recode Bibliothek Version 3.5 dar. Um die Umkodierungsfunktionen benutzen zu k�nnen muss die GNU Recode Bibliothek ab Version 3.5 auf dem System installiert und PHP mit der Option --with-recode kompiliert werden.

Die GNU Recode Bibliothek erm�glicht die Konversion zwischen verschiedenen Zeichens�tzen (wie ASCII, ISO Latin-1, IBM-PC und weiteren) und Eingabekonventionen (z.B. HTML oder LaTeX). Wenn eine exakte Umkodierung nicht m�glich ist, werden die st�renden Zeichen entfernt oder durch Ann�herungen ersetzt. Die Bibliothek erkennt und verwendet etwa 150 verschiedene Zeichens�tze und kann Umwandlungen zwischen den meisten dieser Zeichens�tze vornehmen. Fast alle der in RFC 1345 beschriebenen Zeichens�tze werden unterst�tzt.

Inhaltsverzeichnis
recode_file -- Umkodierung von Dateien entsprechend der Recode Anweisung
recode_string -- Umkodierung eines Strings entsprechend einer Recode Anweisung
recode -- Umkodierung eines Strings entsprechend einer Recode Anweisung

User Contributed Notes
GNU Recode Funktionen

cv at corbach dot de 04-Feb-2002 04:06
`When compiling PHP into Apache as static module Apache configure will complain about an undefined symbol in librecode. You need recode-3.6 (e.g. on ) to get rid of this error. It doesn't matter if you're compiling PHP as DSO.`

pet at humaj dot sk
30-Apr-2003 01:51

Hope this might help someone:

I tried to compile php 4.3.2-RC2
(+some older versions) with recode AND imap (and gd+png+jpeg support,
ldap, gettext, zlib .. but these are not interesting right
now).

Why? I needed to run Imp + Horde + Turba. Turba talks to LDAP
directory (and LDAP uses utf-8 encoding which I need to convert to
iso-8859-2), so I modified Turba to use 'recode' for charset conversions
utf8<->iso8859-2.

System: FreeBSD4.7+Apache 1.3.27+Ben SSL


I either could not properly compile OR after compiling apache
coredumped.

Problem was: imap (libc-client) and recode (librecode)
use the same function hash_lookup(). Therefore during loading libphp.so
(and libraries it depended on) whole apache crashed. Without a word of
what's going on.

The problem is detectable by forcing static
linking (in FreeBSD modify librecode.la and
change
library_names='librecode.so.0 librecode.so librecode.so'
to

library_names='librecode.a'

Now during linking of php the
linker complains of double definition of
hash_lookup.

Solution:

-grab recode3.6 from 
-unpack,
go to src, in files combine.c, hash.c, names.c, recode.c, testdump.c,
html.c, hash.h replace hash_lookup() by hash_lookupX() [or invent some
better name],
compile recode (i had to do:

setenv CFLAGS
"-I/usr/local/include"
setenv LDFLAGS "-L/usr/local/lib
-lintl"
./configure --prefix=/usr/local/recode
--exec-prefix=/usr/local/recode --without-included-gettext
make
make
check 
make install 

(recode is installed to
/usr/local/recode.You can change this and you can force static linking of
recode, so that after building libphp.so this modified recode is no longer
needed and can be deleted! )

For some reason this recode needs to
have externally defined 
int error; 
therefore we have to modify
configure script +one .c php source file:

1. modify configure
script of php: find 
recode_format_table(); 
and somewhere before
start of main() add
int error;

so the result is:

char
*program_name;
int error;
int main()
{
recode_format_table();
; return 0; }

(I modified both
occurences of recode_format_table() in configure of php4.3.2rc2)

2.
run configure, should work ok (my another problem was with imap: though my
c-client was compiled WITHOUT ssl, configure complained that it IS using
ssl, so i had to edit configure once again and comment following lines:

void mm_searched(void){}
void mm_expunged(void){}
// char
ssl_onceonlyinit();  --- commented
int main() {
//
ssl_onceonlyinit(); --- commented
return 0;
}

Now configure
was rather happy :-)

for the record: I did 
./configure
--with-apxs=/usr/local/apache/bin/apxs --with-imap --enable-sysvsem
--enable-sysvshm --with-sybase=/usr/local/freetds --with-gettext
--with-ldap --with-zlib --with-recode=/usr/local/recode
-with-gd=/usr/local --with-jpeg-dir=/usr/local
--with-png-dir=/usr/local

3. edit ext/recode/recode.c (or any other
.c source file, add somewhere (e.g. at the end)
int
error;

without it during linking 'error not defined' will be
complained.

4. do 'make' and php is yours :-)

It took me 2
days.. so do not delete this note, someone might even find it useful and
mail me his thanks :-]

readline	recode_file

	Last updated: Sat, 19 Apr 2003

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