sql/pgsql/parser3pgsql.C - diff

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Diff for /sql/pgsql/parser3pgsql.C between versions 1.1 and 1.13

version 1.1, 2001/09/21 15:44:37	version 1.13, 2003/07/24 10:09:40
Line 1	Line 1
/** @file	/** @file
Parser PgSQL driver.	Parser PgSQL driver.

Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)	Copyright(c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)

Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)

2001.07.30 using PgSQL 7.1.2	2001.07.30 using PgSQL 7.1.2
*/	*/
Line 51 static char lsplit(char string, char d	Line 51 static char lsplit(char string, char d
return 0;	return 0;
}	}

	static char lsplit(char *string_ref, char delim) {
	char result=string_ref;
	char next=lsplit(string_ref, delim);
	*string_ref=next;
	return result;
	}

/**	/**
PgSQL server driver	PgSQL server driver
*/	*/
Line 63 public:	Line 70 public:
/// get api version	/// get api version
int api_version() { return SQL_DRIVER_API_VERSION; }	int api_version() { return SQL_DRIVER_API_VERSION; }
/// initialize driver by loading sql dynamic link library	/// initialize driver by loading sql dynamic link library
const char initialize(const char dlopen_file_spec) {	const char initialize(char dlopen_file_spec) {
return dlopen_file_spec?	return dlopen_file_spec?
dlink(dlopen_file_spec):"client library column is empty";	dlink(dlopen_file_spec):"client library column is empty";
}	}

#define throwPQerror services._throw(PQerrorMessage(conn))	#define throwPQerror services._throw(PQerrorMessage(conn))
	#define PQclear_throw(msg) { \
	PQclear(res); \
	services._throw(msg); \
	}
	#define PQclear_throwPQerror PQclear_throw(PQerrorMessage(conn))

/** connect	/** connect
@param used_only_in_connect_url	@param used_only_in_connect_url
Line 85 public:	Line 97 public:
char *pwd=lsplit(user, ':');	char *pwd=lsplit(user, ':');
char *port=lsplit(host, ':');	char *port=lsplit(host, ':');

	char *options=lsplit(db, '?');

PGconn *conn=PQsetdbLogin(	PGconn *conn=PQsetdbLogin(
strcasecmp(host, "local")==0?NULL/* local Unix domain socket */:host, port,	(host&&strcasecmp(host, "local")==0)?NULL/* local Unix domain socket */:host, port,
NULL, NULL, db, user, pwd);	NULL, NULL, db, user, pwd);
if(!conn)	if(!conn)
services._throw("PQsetdbLogin failed");	services._throw("PQsetdbLogin failed");
if(PQstatus(conn)!=CONNECTION_OK)	if(PQstatus(conn)!=CONNECTION_OK)
throwPQerror;	throwPQerror;

	char *charset=0;
	char *datestyle=0;

	while(options) {
	if(char *key=lsplit(&options, '&')) {
	if(*key) {
	if(char *value=lsplit(key, '=')) {
	if(strcasecmp(key, "charset")==0) {
	charset=value;
	} else if(strcasecmp(key, "datestyle")==0) {
	datestyle=value;
	} else
	services._throw("unknown connect option" /key/);
	} else
	services._throw("connect option without =value" /key/);
	}
	}
	}

	if(charset) {
	// set CLIENT_ENCODING
	char statement[MAX_STRING]="set CLIENT_ENCODING="; // win
	strncat(statement, charset, MAX_STRING);

	PGresult *res=PQexec(conn, statement);
	if(!res)
	throwPQerror;
	PQclear(res); // throw out the result [don't need but must call]
	}

	if(datestyle) {
	// set DATESTYLE
	char statement[MAX_STRING]="set DATESTYLE="; // ISO,SQL,Postgres,European,NonEuropean=US,German,DEFAULT=ISO
	strncat(statement, charset, MAX_STRING);

	PGresult *res=PQexec(conn, statement);
	if(!res)
	throwPQerror;
	PQclear(res); // throw out the result [don't need but must call]
	}

(PGconn *)connection=conn;	(PGconn *)connection=conn;
begin_transaction(services, conn);	begin_transaction(services, conn);
}	}
Line 120 public:	Line 175 public:
return PQstatus((PGconn *)connection)==CONNECTION_OK;	return PQstatus((PGconn *)connection)==CONNECTION_OK;
}	}

unsigned int quote(	const char* quote(
SQL_Driver_services&, void *connection,	SQL_Driver_services& services, void *connection,
char to, const char from, unsigned int length) {	const char *from, unsigned int length) {
/*	char result=(char)services.malloc_atomic(length*2+1);
it's already UNTAINT_TIMES_BIGGER	char *to=result;
*/
unsigned int result=length;
while(length--) {	while(length--) {
switch(*from) {	switch(*from) {
case '\'': // "'" -> "''"	case '\'': // "'" -> "''"
*to++='\'';	*to++='\''; result++;
break;	break;
case '\\': // "\" -> "\\"	case '\\': // "\" -> "\\"
*to++='\'';	*to++='\\'; result++;
break;	break;
}	}
to++=from++;	to++=from++;
}	}
	*to=0;
return result;	return result;
}	}
void query(	void query(
SQL_Driver_services& services, void *connection,	SQL_Driver_services& services, void *connection,
const char *astatement, unsigned long offset, unsigned long limit,	const char *astatement, unsigned long offset, unsigned long limit,
Line 147 public:	Line 201 public:
// _asm int 3;	// _asm int 3;

PGconn conn=(PGconn )connection;	PGconn conn=(PGconn )connection;
#define PQclear_throw(msg) { \
PQclear(res); \
services._throw(msg); \
}
#define PQclear_throwPQerror PQclear_throw(PQerrorMessage(conn))

const char *statement=preprocess_statement(services, conn,	const char *statement=preprocess_statement(services, conn,
astatement, offset, limit);	astatement, offset, limit);
Line 179 public:	Line 228 public:
if(!column_count)	if(!column_count)
PQclear_throw("result contains no columns");	PQclear_throw("result contains no columns");

	bool failed=false;
	SQL_Error sql_error;
	#define CHECK(afailed) \
	if(afailed) { \
	failed=true; \
	goto cleanup; \
	}

for(int i=0; i<column_count; i++){	for(int i=0; i<column_count; i++){
char *name=PQfname(res, i);	char *name=PQfname(res, i);
size_t size=strlen(name);	size_t size=strlen(name);
void *ptr=services.malloc(size);	char* str=(char*)services.malloc(size+1);
memcpy(ptr, name, size);	memcpy(str, name, size+1);
handlers.add_column(ptr, size);	CHECK(handlers.add_column(sql_error, str, size));
}	}

handlers.before_rows();	CHECK(handlers.before_rows(sql_error));

if(unsigned long row_count=(unsigned long)PQntuples(res))	if(unsigned long row_count=(unsigned long)PQntuples(res))
for(unsigned long r=0; r<row_count; r++) {	for(unsigned long r=0; r<row_count; r++) {
handlers.add_row();	CHECK(handlers.add_row(sql_error));
for(int i=0; i<column_count; i++){	for(int i=0; i<column_count; i++){
const char *cell=PQgetvalue(res, r, i);	const char *cell=PQgetvalue(res, r, i);
size_t size;	size_t size;
void *ptr;	char* str;
if(PQftype(res, i)==OIDOID) {	if(PQftype(res, i)==OIDOID) {
// ObjectID column, read object bytes	// ObjectID column, read object bytes

Line 216 public:	Line 273 public:
size=(size_t)size_tell;	size=(size_t)size_tell;
if(size) {	if(size) {
// read	// read
ptr=services.malloc(size);	str=(char*)services.malloc(size+1);
if(!lo_read_ex(conn, fd, (const char *)ptr, size_tell))	if(!lo_read_ex(conn, fd, str, size_tell))
PQclear_throw("lo_read can not read all bytes of object");	PQclear_throw("lo_read can not read all bytes of object");
	str[size]=0;
} else	} else
ptr=0;	str=0;
if(lo_close(conn, fd)<0)	if(lo_close(conn, fd)<0)
PQclear_throwPQerror;	PQclear_throwPQerror;
} else	} else
Line 229 public:	Line 287 public:
// normal column, read it normally	// normal column, read it normally
size=(size_t)PQgetlength(res, r, i);	size=(size_t)PQgetlength(res, r, i);
if(size) {	if(size) {
ptr=services.malloc(size);	str=(char*)services.malloc(size+1);
memcpy(ptr, cell, size);	memcpy(str, cell, size+1);
} else	} else
ptr=0;	str=0;
}	}
handlers.add_row_cell(ptr, size);	CHECK(handlers.add_row_cell(sql_error, str, size));
}	}
}	}
	cleanup:
PQclear(res);	PQclear(res);
	if(failed)
	services._throw(sql_error);
}	}

private: // private funcs	private: // private funcs
Line 388 private: // conn client library funcs	Line 448 private: // conn client library funcs
private: // conn client library funcs linking	private: // conn client library funcs linking

const char dlink(const char dlopen_file_spec) {	const char dlink(const char dlopen_file_spec) {
	if(lt_dlinit())
	return lt_dlerror();
lt_dlhandle handle=lt_dlopen(dlopen_file_spec);	lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
if(!handle)	if(!handle)
return "can not open the dynamic link module";	return "can not open the dynamic link module";
Line 425 private: // conn client library funcs li	Line 487 private: // conn client library funcs li

extern "C" SQL_Driver *SQL_DRIVER_CREATE() {	extern "C" SQL_Driver *SQL_DRIVER_CREATE() {
return new PgSQL_Driver();	return new PgSQL_Driver();
}

	}

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Removed from v.1.1
changed lines
	Added in v.1.13