-<!-- $Id: odr.xml,v 1.19 2006-10-05 08:26:58 adam Exp $ -->
<chapter id="odr"><title>The ODR Module</title>
<sect1 id="odr.introduction"><title>Introduction</title>
</para>
<synopsis>
- void odr_reset(ODR o, int size);
+ void odr_reset(ODR o);
</synopsis>
<para>
<example id="example.odr.encoding.and.decoding.functions">
<title>Encoding and decoding functions</title>
<synopsis>
- int odr_integer(ODR o, int **p, int optional, const char *name);
+ int odr_integer(ODR o, Odr_int **p, int optional, const char *name);
int z_APDU(ODR o, Z_APDU **p, int optional, const char *name);
</synopsis>
informative operation.
</para>
<programlisting><![CDATA[
-void do_nothing_useful(int value)
+void do_nothing_useful(Odr_int value)
{
ODR encode, decode;
- int *valp, *resvalp;
+ Odr_int *valp, *resvalp;
char *bufferp;
int len;
if (!(decode = odr_createmem(ODR_DECODE)))
return;
- valp = &value;
- if (odr_integer(encode, &valp, 0, 0) == 0)
+ valp = &value;
+ if (odr_integer(encode, &valp, 0, 0) == 0)
{
printf("encoding went bad\n");
return;
}
- bufferp = odr_getbuf(encode, &len);
- printf("length of encoded data is %d\n", len);
+ bufferp = odr_getbuf(encode, &len, 0);
+ printf("length of encoded data is %d\n", len);
/* now let's decode the thing again */
- odr_setbuf(decode, bufferp, len);
- if (odr_integer(decode, &resvalp, 0, 0) == 0)
+ odr_setbuf(decode, bufferp, len, 0);
+ if (odr_integer(decode, &resvalp, 0, 0) == 0)
{
printf("decoding went bad\n");
return;
}
- printf("the value is %d\n", *resvalp);
+ /* ODR_INT_PRINTF format for printf (such as %d) */
+ printf("the value is " ODR_INT_PRINTF "\n", *resvalp);
/* clean up */
odr_destroy(encode);
</para>
<synopsis>
- char *odr_errlist[]
+ char *odr_errlist[]
</synopsis>
<para>
<title>Summary and Synopsis</title>
<synopsis>
- #include <odr.h>
+ #include <yaz/odr.h>
ODR odr_createmem(int direction);
void odr_reset(ODR o);
- char *odr_getbuf(ODR o, int *len);
+ char *odr_getbuf(ODR o, int *len, int *size);
- void odr_setbuf(ODR o, char *buf, int len);
+ void odr_setbuf(ODR o, char *buf, int len, int can_grow);
void *odr_malloc(ODR o, int size);
- ODR_MEM odr_extract_mem(ODR o);
-
- void odr_release_mem(ODR_MEM r);
+ NMEM odr_extract_mem(ODR o);
int odr_geterror(ODR o);
- void odr_perror(char *message);
+ void odr_perror(ODR o, const char *message);
extern char *odr_errlist[];
</synopsis>
</para>
<synopsis>
- int odr_integer(ODR o, int **p, int optional, const char *name);
+ int odr_integer(ODR o, Odr_int **p, int optional, const char *name);
</synopsis>
<para>
- (we don't allow values that can't be contained in a C integer.)
+ The <literal>Odr_int</literal> is just a simple integer.
</para>
<para>
<sect3 id="odr.boolean"><title>BOOLEAN</title>
<synopsis>
-int odr_bool(ODR o, bool_t **p, int optional, const char *name);
+int odr_bool(ODR o, Odr_bool **p, int optional, const char *name);
</synopsis>
</sect3>
<sect3 id="odr.null"><title>NULL</title>
<synopsis>
-int odr_null(ODR o, bool_t **p, int optional, const char *name);
+int odr_null(ODR o, Odr_null **p, int optional, const char *name);
</synopsis>
<para>
<para>
The C OID representation is simply an array of integers, terminated by
the value -1 (the <literal>Odr_oid</literal> type is synonymous with
- the <literal>int</literal> type).
+ the <literal>short</literal> type).
We suggest that you use the OID database module (see
- <xref linkend="asn.oid"/>) to handle object identifiers
+ <xref linkend="tools.oid.database"/>) to handle object identifiers
in your application.
</para>
</para>
<screen>
- MyInt ::= [210] IMPLICIT INTEGER
+ MyInt ::= [210] IMPLICIT INTEGER
</screen>
<para>
</para>
<screen>
-int myInt(ODR o, int **p, int optional, const char *name)
+int myInt(ODR o, Odr_int **p, int optional, const char *name)
{
return odr_implicit_tag(o, odr_integer, p,
ODR_CONTEXT, 210, optional, name);
<screen>
typedef struct MySequence
{
- int *intval;
- bool_t *boolval;
+ Odr_int *intval;
+ Odr_bool *boolval;
} MySequence;
int mySequence(ODR o, MySequence **p, int optional, const char *name)
</para>
<screen>
-MySequence ::= [10] IMPLICIT SEQUENCE {
+MySequence ::= [10] IMPLICIT SEQUENCE {
intval INTEGER,
boolval BOOLEAN OPTIONAL
}
</para>
<screen>
-MySequence ::= [10] IMPLICIT SEQUENCE {
+MySequence ::= [10] IMPLICIT SEQUENCE {
intval INTEGER,
boolval BOOLEAN OPTIONAL
}
typedef struct MyArray
{
int num_elements;
- int **elements;
+ Odr_int **elements;
} MyArray;
</screen>
</para>
<synopsis>
-int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp,
+int odr_choice(ODR o, Odr_arm arm[], void *p, void *whichp,
const char *name);
</synopsis>
<varlistentry><term>which</term>
<listitem><para>The value of the discriminator that corresponds to
- this CHOICE element. Typically, it will be a #defined constant, or
+ this CHOICE element. Typically, it will be a #defined constant, or
an enum member.</para></listitem>
</varlistentry>
<screen>
MyChoice ::= CHOICE {
untagged INTEGER,
- tagged [99] IMPLICIT INTEGER,
+ tagged [99] IMPLICIT INTEGER,
other BOOLEAN
}
</screen>
} which;
union
{
- int *untagged;
- int *tagged;
- bool_t *other;
+ Odr_int *untagged;
+ Odr_int *tagged;
+ Odr_bool *other;
} u;
};
</screen>
<screen>
int myChoice(ODR o, MyChoice **p, int optional, const char *name)
{
- static Odr_arm arm[] =
+ static Odr_arm arm[] =
{
{-1, -1, -1, MyChoice_untagged, odr_integer, "untagged"},
{ODR_IMPLICIT, ODR_CONTEXT, 99, MyChoice_tagged, odr_integer,