text* String_createText(jstring javaString)
{
text* result = 0;
if(javaString != 0)
{
/* Would be nice if a direct conversion from UTF16 was provided.
*/
char* utf8 = (char*)JNI_getStringUTFChars(javaString, 0);
char* denc = (char*)pg_do_encoding_conversion(
(unsigned char*)utf8, strlen(utf8), PG_UTF8, GetDatabaseEncoding());
int dencLen = strlen(denc);
int varSize = dencLen + VARHDRSZ;
/* Allocate and initialize the text structure.
*/
result = (text*)palloc(varSize);
#if (PGSQL_MAJOR_VER == 8 && PGSQL_MINOR_VER < 3)
VARATT_SIZEP(result) = varSize; /* Total size of structure, not just data */
#else
SET_VARSIZE(result, varSize); /* Total size of structure, not just data */
#endif
memcpy(VARDATA(result), denc, dencLen);
/* pg_do_encoding_conversion will return the source argument
* when no conversion is required. We don't want to accidentally
* free that pointer.
*/
if(denc != utf8)
pfree(denc);
JNI_releaseStringUTFChars(javaString, utf8);
}
return result;
}
char* String_createNTS(jstring javaString)
{
char* result = 0;
if( 0 == javaString )
return result;
if ( uninitialized )
{
const char* u8buf;
s_server_encoding = GetDatabaseEncoding();
u8buf = JNI_getStringUTFChars( javaString, NULL);
if ( 0 == u8buf )
return result;
result = (char*)pg_do_encoding_conversion(
(unsigned char *)u8buf, (int)strlen( u8buf),
PG_UTF8, s_server_encoding);
if ( result == u8buf )
result = pstrdup( result);
JNI_releaseStringUTFChars( javaString, u8buf);
return result;
}
else
{
jobject charbuf = JNI_callStaticObjectMethodLocked(s_CharBuffer_class,
s_CharBuffer_wrap, javaString);
StringInfoData sid;
initStringInfo(&sid);
appendCharBuffer(&sid, charbuf);
JNI_deleteLocalRef(charbuf);
result = (char*)pg_do_encoding_conversion(
(unsigned char *)sid.data, sid.len, PG_UTF8, s_server_encoding);
/* pg_do_encoding_conversion will return the source argument
* when no conversion is required. Don't free it in that case.
*/
if(result != sid.data)
pfree(sid.data);
}
return result;
}
char* String_createNTS(jstring javaString)
{
char* result = 0;
if(javaString != 0)
{
/* Would be nice if a direct conversion from UTF16 was provided.
*/
char* utf8 = (char*)JNI_getStringUTFChars(javaString, 0);
result = (char*)pg_do_encoding_conversion(
(unsigned char*)utf8, strlen(utf8), PG_UTF8, GetDatabaseEncoding());
/* pg_do_encoding_conversion will return the source argument
* when no conversion is required. We always want a copy here.
*/
if(result == utf8)
result = pstrdup(result);
JNI_releaseStringUTFChars(javaString, utf8);
}
return result;
}
void String_appendJavaString(StringInfoData* buf, jstring javaString)
{
if(javaString != 0)
{
/* Would be nice if a direct conversion from UTF16 was provided.
*/
char* utf8 = (char*)JNI_getStringUTFChars(javaString, 0);
char* dbEnc = (char*)pg_do_encoding_conversion(
(unsigned char*)utf8, strlen(utf8), PG_UTF8, GetDatabaseEncoding());
appendStringInfoString(buf, dbEnc);
/* pg_do_encoding_conversion will return the source argument
* when no conversion is required. We don't want to accidentally
* free that pointer.
*/
if(dbEnc != utf8)
pfree(dbEnc);
JNI_releaseStringUTFChars(javaString, utf8);
}
}
