mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-01 02:17:21 +02:00
435 lines
11 KiB
C
435 lines
11 KiB
C
/*
|
|
* in/out function for ltree and lquery
|
|
* Teodor Sigaev <teodor@stack.net>
|
|
*/
|
|
|
|
#include "ltree.h"
|
|
#include <ctype.h>
|
|
#include "crc32.h"
|
|
|
|
PG_FUNCTION_INFO_V1(ltree_in);
|
|
Datum ltree_in(PG_FUNCTION_ARGS);
|
|
PG_FUNCTION_INFO_V1(ltree_out);
|
|
Datum ltree_out(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(lquery_in);
|
|
Datum lquery_in(PG_FUNCTION_ARGS);
|
|
PG_FUNCTION_INFO_V1(lquery_out);
|
|
Datum lquery_out(PG_FUNCTION_ARGS);
|
|
|
|
|
|
#define UNCHAR elog(ERROR,"Syntax error in position %d near '%c'", (int)(ptr-buf), *ptr)
|
|
|
|
typedef struct {
|
|
char* start;
|
|
int len;
|
|
int flag;
|
|
} nodeitem;
|
|
|
|
#define LTPRS_WAITNAME 0
|
|
#define LTPRS_WAITDELIM 1
|
|
|
|
Datum
|
|
ltree_in(PG_FUNCTION_ARGS) {
|
|
char *buf = (char *) PG_GETARG_POINTER(0);
|
|
char *ptr;
|
|
nodeitem *list, *lptr;
|
|
int num=0, totallen = 0;
|
|
int state = LTPRS_WAITNAME;
|
|
ltree *result;
|
|
ltree_level *curlevel;
|
|
|
|
ptr=buf;
|
|
while( *ptr ) {
|
|
if ( *ptr == '.' )
|
|
num++;
|
|
ptr++;
|
|
}
|
|
|
|
list = lptr = (nodeitem*) palloc( sizeof(nodeitem)*(num+1) );
|
|
ptr=buf;
|
|
while( *ptr ) {
|
|
if ( state == LTPRS_WAITNAME ) {
|
|
if ( ISALNUM(*ptr) ) {
|
|
lptr->start = ptr;
|
|
state = LTPRS_WAITDELIM;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state == LTPRS_WAITDELIM ) {
|
|
if ( *ptr == '.' ) {
|
|
lptr->len = ptr - lptr->start;
|
|
if ( lptr->len > 255 )
|
|
elog(ERROR,"Name of level is too long (%d, must be < 256) in position %d",
|
|
lptr->len, (int)(lptr->start - buf));
|
|
totallen += MAXALIGN(lptr->len + LEVEL_HDRSIZE);
|
|
lptr++;
|
|
state = LTPRS_WAITNAME;
|
|
} else if ( !ISALNUM(*ptr) )
|
|
UNCHAR;
|
|
} else
|
|
elog(ERROR,"Inner error in parser");
|
|
ptr++;
|
|
}
|
|
|
|
if ( state == LTPRS_WAITDELIM ) {
|
|
lptr->len = ptr - lptr->start;
|
|
if ( lptr->len > 255 )
|
|
elog(ERROR,"Name of level is too long (%d, must be < 256) in position %d",
|
|
lptr->len, (int)(lptr->start - buf));
|
|
totallen += MAXALIGN(lptr->len + LEVEL_HDRSIZE);
|
|
lptr++;
|
|
} else if ( ! (state == LTPRS_WAITNAME && lptr == list) )
|
|
elog(ERROR,"Unexpected end of line");
|
|
|
|
result = (ltree*)palloc( LTREE_HDRSIZE + totallen );
|
|
result->len = LTREE_HDRSIZE + totallen;
|
|
result->numlevel = lptr-list;
|
|
curlevel = LTREE_FIRST(result);
|
|
lptr=list;
|
|
while( lptr-list < result->numlevel ) {
|
|
curlevel->len = (uint8) lptr->len;
|
|
memcpy( curlevel->name, lptr->start, lptr->len);
|
|
curlevel = LEVEL_NEXT(curlevel);
|
|
lptr++;
|
|
}
|
|
|
|
pfree(list);
|
|
PG_RETURN_POINTER(result);
|
|
}
|
|
|
|
Datum
|
|
ltree_out(PG_FUNCTION_ARGS) {
|
|
ltree *in = PG_GETARG_LTREE(0);
|
|
char *buf,*ptr;
|
|
int i;
|
|
ltree_level *curlevel;
|
|
|
|
ptr = buf = (char*)palloc( in->len );
|
|
curlevel = LTREE_FIRST(in);
|
|
for(i=0;i<in->numlevel;i++) {
|
|
if ( i!=0 ) {
|
|
*ptr = '.';
|
|
ptr++;
|
|
}
|
|
memcpy( ptr, curlevel->name, curlevel->len );
|
|
ptr+=curlevel->len;
|
|
curlevel = LEVEL_NEXT(curlevel);
|
|
}
|
|
|
|
*ptr='\0';
|
|
PG_FREE_IF_COPY(in,0);
|
|
|
|
PG_RETURN_POINTER(buf);
|
|
}
|
|
|
|
#define LQPRS_WAITLEVEL 0
|
|
#define LQPRS_WAITDELIM 1
|
|
#define LQPRS_WAITOPEN 2
|
|
#define LQPRS_WAITFNUM 3
|
|
#define LQPRS_WAITSNUM 4
|
|
#define LQPRS_WAITND 5
|
|
#define LQPRS_WAITCLOSE 6
|
|
#define LQPRS_WAITEND 7
|
|
#define LQPRS_WAITVAR 8
|
|
|
|
|
|
#define GETVAR(x) ( *((nodeitem**)LQL_FIRST(x)) )
|
|
#define ITEMSIZE MAXALIGN(LQL_HDRSIZE+sizeof(nodeitem*))
|
|
#define NEXTLEV(x) ( (lquery_level*)( ((char*)(x)) + ITEMSIZE) )
|
|
|
|
Datum
|
|
lquery_in(PG_FUNCTION_ARGS) {
|
|
char *buf = (char *) PG_GETARG_POINTER(0);
|
|
char *ptr;
|
|
int num=0, totallen = 0, numOR=0;
|
|
int state = LQPRS_WAITLEVEL;
|
|
lquery *result;
|
|
nodeitem *lptr=NULL;
|
|
lquery_level *cur,*curqlevel, *tmpql;
|
|
lquery_variant *lrptr=NULL;
|
|
bool hasnot=false;
|
|
bool wasbad=false;
|
|
|
|
ptr=buf;
|
|
while( *ptr ) {
|
|
if ( *ptr == '.' )
|
|
num++;
|
|
else if ( *ptr == '|' )
|
|
numOR++;
|
|
ptr++;
|
|
}
|
|
|
|
num++;
|
|
curqlevel = tmpql = (lquery_level*) palloc( ITEMSIZE*num );
|
|
memset((void*)tmpql,0, ITEMSIZE*num );
|
|
ptr=buf;
|
|
while( *ptr ) {
|
|
if ( state==LQPRS_WAITLEVEL ) {
|
|
if ( ISALNUM(*ptr) ) {
|
|
GETVAR(curqlevel) = lptr = (nodeitem*)palloc( sizeof(nodeitem)*(numOR+1) );
|
|
memset((void*)GETVAR(curqlevel), 0,sizeof(nodeitem)*(numOR+1) );
|
|
lptr->start = ptr;
|
|
state = LQPRS_WAITDELIM;
|
|
curqlevel->numvar = 1;
|
|
} else if ( *ptr == '!' ) {
|
|
GETVAR(curqlevel) = lptr = (nodeitem*)palloc( sizeof(nodeitem)*(numOR+1) );
|
|
memset((void*)GETVAR(curqlevel), 0,sizeof(nodeitem)*(numOR+1) );
|
|
lptr->start = ptr+1;
|
|
state = LQPRS_WAITDELIM;
|
|
curqlevel->numvar = 1;
|
|
curqlevel->flag |= LQL_NOT;
|
|
hasnot=true;
|
|
} else if ( *ptr == '*' ) {
|
|
state = LQPRS_WAITOPEN;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state==LQPRS_WAITVAR ) {
|
|
if ( ISALNUM(*ptr) ) {
|
|
lptr++;
|
|
lptr->start = ptr;
|
|
state = LQPRS_WAITDELIM;
|
|
curqlevel->numvar++;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state==LQPRS_WAITDELIM ) {
|
|
if ( *ptr == '@' ) {
|
|
if ( lptr->start == ptr )
|
|
UNCHAR;
|
|
lptr->flag |= LVAR_INCASE;
|
|
curqlevel->flag |= LVAR_INCASE;
|
|
} else if ( *ptr == '*' ) {
|
|
if ( lptr->start == ptr )
|
|
UNCHAR;
|
|
lptr->flag |= LVAR_ANYEND;
|
|
curqlevel->flag |= LVAR_ANYEND;
|
|
} else if ( *ptr == '%' ) {
|
|
if ( lptr->start == ptr )
|
|
UNCHAR;
|
|
lptr->flag |= LVAR_SUBLEXEM;
|
|
curqlevel->flag |= LVAR_SUBLEXEM;
|
|
} else if ( *ptr == '|' ) {
|
|
lptr->len = ptr - lptr->start -
|
|
( ( lptr->flag & LVAR_SUBLEXEM ) ? 1 : 0 ) -
|
|
( ( lptr->flag & LVAR_INCASE ) ? 1 : 0 ) -
|
|
( ( lptr->flag & LVAR_ANYEND ) ? 1 : 0 );
|
|
if ( lptr->len > 255 )
|
|
elog(ERROR,"Name of level is too long (%d, must be < 256) in position %d",
|
|
lptr->len, (int)(lptr->start - buf));
|
|
state = LQPRS_WAITVAR;
|
|
} else if ( *ptr == '.' ) {
|
|
lptr->len = ptr - lptr->start -
|
|
( ( lptr->flag & LVAR_SUBLEXEM ) ? 1 : 0 ) -
|
|
( ( lptr->flag & LVAR_INCASE ) ? 1 : 0 ) -
|
|
( ( lptr->flag & LVAR_ANYEND ) ? 1 : 0 );
|
|
if ( lptr->len > 255 )
|
|
elog(ERROR,"Name of level is too long (%d, must be < 256) in position %d",
|
|
lptr->len, (int)(lptr->start - buf));
|
|
state = LQPRS_WAITLEVEL;
|
|
curqlevel = NEXTLEV(curqlevel);
|
|
} else if ( ISALNUM(*ptr) ) {
|
|
if ( lptr->flag )
|
|
UNCHAR;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state == LQPRS_WAITOPEN ) {
|
|
if ( *ptr == '{' ) {
|
|
state = LQPRS_WAITFNUM;
|
|
} else if ( *ptr == '.' ) {
|
|
curqlevel->low=0;
|
|
curqlevel->high=0xffff;
|
|
curqlevel = NEXTLEV(curqlevel);
|
|
state = LQPRS_WAITLEVEL;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state == LQPRS_WAITFNUM ) {
|
|
if ( *ptr == ',' ) {
|
|
state = LQPRS_WAITSNUM;
|
|
} else if ( isdigit((unsigned int)*ptr) ) {
|
|
curqlevel->low = atoi( ptr );
|
|
state = LQPRS_WAITND;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state == LQPRS_WAITSNUM ) {
|
|
if ( isdigit((unsigned int)*ptr) ) {
|
|
curqlevel->high = atoi( ptr );
|
|
state = LQPRS_WAITCLOSE;
|
|
} else if ( *ptr == '}' ) {
|
|
curqlevel->high = 0xffff;
|
|
state = LQPRS_WAITEND;
|
|
} else
|
|
UNCHAR;
|
|
} else if ( state == LQPRS_WAITCLOSE ) {
|
|
if ( *ptr == '}' )
|
|
state = LQPRS_WAITEND;
|
|
else if ( !isdigit((unsigned int)*ptr) )
|
|
UNCHAR;
|
|
} else if ( state == LQPRS_WAITND ) {
|
|
if ( *ptr == '}' ) {
|
|
curqlevel->high = curqlevel->low;
|
|
state = LQPRS_WAITEND;
|
|
} else if ( *ptr == ',' )
|
|
state = LQPRS_WAITSNUM;
|
|
else if ( !isdigit((unsigned int)*ptr) )
|
|
UNCHAR;
|
|
} else if ( state == LQPRS_WAITEND ) {
|
|
if ( *ptr == '.' ) {
|
|
state = LQPRS_WAITLEVEL;
|
|
curqlevel = NEXTLEV(curqlevel);
|
|
} else
|
|
UNCHAR;
|
|
} else
|
|
elog(ERROR,"Inner error in parser");
|
|
ptr++;
|
|
}
|
|
|
|
if ( state==LQPRS_WAITDELIM ) {
|
|
if ( lptr->start == ptr )
|
|
elog(ERROR,"Unexpected end of line");
|
|
lptr->len = ptr - lptr->start -
|
|
( ( lptr->flag & LVAR_SUBLEXEM ) ? 1 : 0 ) -
|
|
( ( lptr->flag & LVAR_INCASE ) ? 1 : 0 ) -
|
|
( ( lptr->flag & LVAR_ANYEND ) ? 1 : 0 );
|
|
if ( lptr->len==0 )
|
|
elog(ERROR,"Unexpected end of line");
|
|
if ( lptr->len > 255 )
|
|
elog(ERROR,"Name of level is too long (%d, must be < 256) in position %d",
|
|
lptr->len, (int)(lptr->start - buf));
|
|
} else if ( state == LQPRS_WAITOPEN ) {
|
|
curqlevel->high = 0xffff;
|
|
} else if ( state != LQPRS_WAITEND )
|
|
elog(ERROR,"Unexpected end of line");
|
|
|
|
curqlevel = tmpql;
|
|
totallen = LQUERY_HDRSIZE;
|
|
while( (char*)curqlevel-(char*)tmpql < num*ITEMSIZE ) {
|
|
totallen += LQL_HDRSIZE;
|
|
if ( curqlevel->numvar ) {
|
|
lptr = GETVAR(curqlevel);
|
|
while( lptr-GETVAR(curqlevel) < curqlevel->numvar ) {
|
|
totallen += MAXALIGN(LVAR_HDRSIZE + lptr->len);
|
|
lptr++;
|
|
}
|
|
} else if ( curqlevel->low > curqlevel->high )
|
|
elog(ERROR,"Low limit(%d) is greater than upper(%d)",curqlevel->low,curqlevel->high );
|
|
curqlevel = NEXTLEV(curqlevel);
|
|
}
|
|
|
|
result = (lquery*)palloc( totallen );
|
|
result->len = totallen;
|
|
result->numlevel = num;
|
|
result->firstgood = 0;
|
|
result->flag=0;
|
|
if ( hasnot )
|
|
result->flag |= LQUERY_HASNOT;
|
|
cur = LQUERY_FIRST(result);
|
|
curqlevel = tmpql;
|
|
while( (char*)curqlevel-(char*)tmpql < num*ITEMSIZE ) {
|
|
memcpy(cur,curqlevel,LQL_HDRSIZE);
|
|
cur->totallen=LQL_HDRSIZE;
|
|
if ( curqlevel->numvar ) {
|
|
lrptr = LQL_FIRST(cur);
|
|
lptr = GETVAR(curqlevel);
|
|
while( lptr-GETVAR(curqlevel) < curqlevel->numvar ) {
|
|
cur->totallen += MAXALIGN(LVAR_HDRSIZE + lptr->len);
|
|
lrptr->len = lptr->len;
|
|
lrptr->flag = lptr->flag;
|
|
lrptr->val = ltree_crc32_sz((uint8 *) lptr->start, lptr->len);
|
|
memcpy( lrptr->name, lptr->start, lptr->len);
|
|
lptr++;
|
|
lrptr = LVAR_NEXT( lrptr );
|
|
}
|
|
pfree( GETVAR(curqlevel) );
|
|
if ( cur->numvar > 1 || cur->flag != 0 )
|
|
wasbad=true;
|
|
else if ( wasbad==false )
|
|
(result->firstgood)++;
|
|
} else
|
|
wasbad=true;
|
|
curqlevel = NEXTLEV(curqlevel);
|
|
cur = LQL_NEXT(cur);
|
|
}
|
|
|
|
pfree(tmpql);
|
|
PG_RETURN_POINTER(result);
|
|
}
|
|
|
|
Datum
|
|
lquery_out(PG_FUNCTION_ARGS) {
|
|
lquery *in = PG_GETARG_LQUERY(0);
|
|
char *buf,*ptr;
|
|
int i,j,totallen=0;
|
|
lquery_level *curqlevel;
|
|
lquery_variant *curtlevel;
|
|
|
|
curqlevel = LQUERY_FIRST(in);
|
|
for(i=0;i<in->numlevel;i++) {
|
|
if ( curqlevel->numvar )
|
|
totallen = (curqlevel->numvar*4) + 1 + curqlevel->totallen;
|
|
else
|
|
totallen = 2*11 + 4;
|
|
totallen++;
|
|
curqlevel = LQL_NEXT(curqlevel);
|
|
}
|
|
|
|
|
|
ptr = buf = (char*)palloc( totallen );
|
|
curqlevel = LQUERY_FIRST(in);
|
|
for(i=0;i<in->numlevel;i++) {
|
|
if ( i!=0 ) {
|
|
*ptr = '.';
|
|
ptr++;
|
|
}
|
|
if ( curqlevel->numvar ) {
|
|
if ( curqlevel->flag & LQL_NOT ) {
|
|
*ptr = '!';
|
|
ptr++;
|
|
}
|
|
curtlevel = LQL_FIRST(curqlevel);
|
|
for(j=0;j<curqlevel->numvar;j++) {
|
|
if ( j!=0 ) {
|
|
*ptr = '|';
|
|
ptr++;
|
|
}
|
|
memcpy( ptr, curtlevel->name, curtlevel->len );
|
|
ptr+=curtlevel->len;
|
|
if ( (curtlevel->flag & LVAR_SUBLEXEM) ) {
|
|
*ptr = '%';
|
|
ptr++;
|
|
}
|
|
if ( (curtlevel->flag & LVAR_INCASE) ) {
|
|
*ptr = '@';
|
|
ptr++;
|
|
}
|
|
if ( (curtlevel->flag & LVAR_ANYEND) ) {
|
|
*ptr = '*';
|
|
ptr++;
|
|
}
|
|
curtlevel = LVAR_NEXT(curtlevel);
|
|
}
|
|
} else {
|
|
if ( curqlevel->low == curqlevel->high ) {
|
|
sprintf(ptr,"*{%d}",curqlevel->low);
|
|
} else if ( curqlevel->low == 0 ) {
|
|
if ( curqlevel->high == 0xffff ) {
|
|
*ptr='*';
|
|
*(ptr+1)='\0';
|
|
} else
|
|
sprintf(ptr,"*{,%d}",curqlevel->high);
|
|
} else if ( curqlevel->high == 0xffff ) {
|
|
sprintf(ptr,"*{%d,}",curqlevel->low);
|
|
} else
|
|
sprintf(ptr,"*{%d,%d}", curqlevel->low, curqlevel->high);
|
|
ptr = strchr(ptr,'\0');
|
|
}
|
|
|
|
curqlevel = LQL_NEXT(curqlevel);
|
|
}
|
|
|
|
*ptr='\0';
|
|
PG_FREE_IF_COPY(in,0);
|
|
|
|
PG_RETURN_POINTER(buf);
|
|
}
|
|
|
|
|