php-src/ext/dbx/dbx_sqlite.c

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2004 The PHP Group                                |
   +----------------------------------------------------------------------+
   | dbx module version 1.0                                               |
   +----------------------------------------------------------------------+
   | Copyright (c) 2001-2003 Guidance Rotterdam BV                        |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.0 of the PHP license,       |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_0.txt.                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author : Marc Boeren         <marc@guidance.nl>                      |
   +----------------------------------------------------------------------+
*/

/* $Id$ */

#include "dbx.h"
#include "dbx_sqlite.h"

#define SQLITE_ASSOC 1
#define SQLITE_NUM   2
#define SQLITE_BOTH  3

int dbx_sqlite_connect(zval **rv, zval **host, zval **db, zval **username, zval **password, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns connection handle as resource on success or 0 as long on failure */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;

	arguments[0]=db;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_open", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_RESOURCE) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}

	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_pconnect(zval **rv, zval **host, zval **db, zval **username, zval **password, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns persistent connection handle as resource on success or 0 as long on failure */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;

	arguments[0]=db;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_popen", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_RESOURCE) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_close(zval **rv, zval **dbx_handle, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns 1 as long on success or 0 as long on failure */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;

	arguments[0]=dbx_handle;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_close", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_BOOL) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_query(zval **rv, zval **dbx_handle, zval **db_name, zval **sql_statement, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns 1 as long or a result identifier as resource on success  or 0 as long on failure */
	int number_of_arguments=2;
	zval **arguments[2];
	zval *returned_zval=NULL;

	number_of_arguments=2;
	arguments[0]=dbx_handle;
	arguments[1]=sql_statement;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_query", &returned_zval, number_of_arguments, arguments);
	/* sqlite_query returns a bool for success or failure, or a result_identifier for select statements */
	if (!returned_zval || (Z_TYPE_P(returned_zval)!=IS_BOOL && Z_TYPE_P(returned_zval)!=IS_RESOURCE)) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_getcolumncount(zval **rv, zval **result_handle, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns column-count as long on success or 0 as long on failure */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;

	arguments[0]=result_handle;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_num_fields", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_LONG) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_getcolumnname(zval **rv, zval **result_handle, long column_index, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns column-name as string on success or 0 as long on failure */
	int number_of_arguments=2;
	zval **arguments[2];
	zval *zval_column_index;
	zval *returned_zval=NULL;

	MAKE_STD_ZVAL(zval_column_index);
	ZVAL_LONG(zval_column_index, column_index);
	arguments[0]=result_handle;
	arguments[1]=&zval_column_index;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_field_name", &returned_zval, number_of_arguments, arguments);
	/* sqlite_field_name returns a string */
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_STRING) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		FREE_ZVAL(zval_column_index);
		return 0;
	}
	FREE_ZVAL(zval_column_index);
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_getcolumntype(zval **rv, zval **result_handle, long column_index, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns column-type as string on success or 0 as long on failure */
	/*int number_of_arguments=2;
	zval **arguments[2];
	zval *zval_column_index;
	*/
	zval *returned_zval=NULL;

	/*
	MAKE_STD_ZVAL(zval_column_index);
	ZVAL_LONG(zval_column_index, column_index);
	arguments[0]=result_handle;
	arguments[1]=&zval_column_index;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_field_type", &returned_zval, number_of_arguments, arguments);
	*/
	/* sqlite_field_type returns a string */
	/*
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_STRING) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		FREE_ZVAL(zval_column_index);
		return 0;
	}
	FREE_ZVAL(zval_column_index);
	*/
	MAKE_STD_ZVAL(returned_zval);
	ZVAL_STRING(returned_zval, "string", 1); /* fake field type */

	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_getrow(zval **rv, zval **result_handle, long row_number, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns array[0..columncount-1] as strings on success or 0 as long on failure */
	int number_of_arguments=2;
	zval **arguments[2];
	zval *zval_resulttype=NULL;
	zval *returned_zval=NULL;

	MAKE_STD_ZVAL(zval_resulttype);
	ZVAL_LONG(zval_resulttype, SQLITE_NUM);
	arguments[0]=result_handle;
	arguments[1]=&zval_resulttype;
	/* optional boolean third parameter 'decode_binary' skipped */
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_fetch_array", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_ARRAY) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		FREE_ZVAL(zval_resulttype);
		return 0;
	}
	FREE_ZVAL(zval_resulttype);
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_error(zval **rv, zval **dbx_handle, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns string */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval_errcode=NULL;
	zval *returned_zval=NULL;

	arguments[0]=dbx_handle;
	if (!dbx_handle) number_of_arguments=0;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_last_error", &returned_zval_errcode, number_of_arguments, arguments);
	if (!returned_zval_errcode || Z_TYPE_P(returned_zval_errcode)!=IS_LONG) {
		if (returned_zval_errcode) zval_ptr_dtor(&returned_zval_errcode);
		return 0;
	}
	if (Z_LVAL_P(returned_zval_errcode) == 0) {
		zval_ptr_dtor(&returned_zval_errcode);
		ZVAL_EMPTY_STRING(*rv);
		return 1;
	}
	arguments[0]=&returned_zval_errcode;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_error_string", &returned_zval, number_of_arguments, arguments);
	zval_ptr_dtor(&returned_zval_errcode);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_STRING) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		return 0;
	}

	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

int dbx_sqlite_esc(zval **rv, zval **dbx_handle, zval **string, INTERNAL_FUNCTION_PARAMETERS)
{
	/* returns escaped string */
	int number_of_arguments=1;
	zval **arguments[1];
	zval *returned_zval=NULL;
	char * str;
	int len;
	char * tmpstr;
	int tmplen;

	if (Z_STRLEN_PP(string) == 0) {
		ZVAL_EMPTY_STRING(*rv);
		return 1;
	}
	arguments[0]=string;
	dbx_call_any_function(INTERNAL_FUNCTION_PARAM_PASSTHRU, "sqlite_escape_string", &returned_zval, number_of_arguments, arguments);
	if (!returned_zval || Z_TYPE_P(returned_zval)!=IS_STRING) {
		if (returned_zval) zval_ptr_dtor(&returned_zval);
		/* sqlite_escape_string failed, just do my own escaping then */
		/* replace ' with '' */
		tmpstr = estrdup(Z_STRVAL_PP(string));
		tmplen = Z_STRLEN_PP(string);
		/* php_str_to_str uses a smart_str that allocates memory */
		/* this memory must be freed or passed on to rv */
		str = php_str_to_str(tmpstr, tmplen, "'", 1, "''", 2, &len);
		efree(tmpstr);

		ZVAL_STRINGL(*rv, str, len, 0);
		return 1;
	}
	MOVE_RETURNED_TO_RV(rv, returned_zval);
	return 1;
}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 */