-/* $Id: xpath.c,v 1.1 2003-02-04 12:06:48 pop Exp $
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
+/* $Id: xpath.c,v 1.2 2003-03-01 20:41:34 adam Exp $
+ Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003
Index Data Aps
This file is part of the Zebra server.
#include <yaz/nmem.h>
#include <zebra_xpath.h>
-char *get_xp_part (char **strs, NMEM mem) {
- char *str = *strs;
- char *res = '\0';
- char *cp = str;
- char *co;
- int quoted = 0;
-
- /* ugly */
- char *sep = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\" ";
-
- while (*cp == ' ') {cp++; str++;}
- if (!strchr("><=] ", *cp)) sep = "><=] ";
-
- while (*cp && !(strchr(sep,*cp) && !quoted) && (*cp != ']')) {
- if (*cp =='"') quoted = 1 - quoted;
- cp++;
- }
- /* removing leading and trailing " */
- co = cp;
- if (*str == '"') str++;
- if (*(cp-1) == '"') cp--;
- if (str < co) {
- res = nmem_malloc(mem, cp - str + 1);
+char *get_xp_part (char **strs, NMEM mem)
+{
+ char *str = *strs;
+ char *res = '\0';
+ char *cp = str;
+ char *co;
+ int quoted = 0;
+
+ /* ugly */
+ char *sep = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\" ";
+
+ while (*cp == ' ') {cp++; str++;}
+ if (!strchr("><=] ", *cp)) sep = "><=] ";
+
+ while (*cp && !(strchr(sep,*cp) && !quoted) && (*cp != ']')) {
+ if (*cp =='"') quoted = 1 - quoted;
+ cp++;
+ }
+ /* removing leading and trailing " */
+ co = cp;
+ if (*str == '"') str++;
+ if (*(cp-1) == '"') cp--;
+ if (str < co) {
+ res = nmem_malloc(mem, cp - str + 1);
memcpy (res, str, (cp-str));
*(res + (cp-str)) = '\0';
*strs = co;
- }
-
- return (res);
+ }
+
+ return (res);
}
-struct xpath_predicate *get_xpath_predicate(char *predicates, NMEM mem) {
- char *p1;
- char *p2;
- char *p3;
- char *p4;
-
- struct xpath_predicate *r1;
- struct xpath_predicate *r2;
- struct xpath_predicate *res = 0;
-
- char *pr = predicates;
-
- if ((p1 = get_xp_part(&pr, mem))) {
- if ((p2 = get_xp_part(&pr, mem))) {
- if (!strcmp (p2, "and") || !strcmp (p2, "or") || !strcmp (p2, "not")) {
- r1=nmem_malloc(mem, sizeof(struct xpath_predicate));
- r1->which = XPATH_PREDICATE_RELATION;
- r1->u.relation.name = p1;
- r1->u.relation.op = "";
- r1->u.relation.value = "";
-
- r2 = get_xpath_predicate (pr, mem);
-
- res = nmem_malloc(mem, sizeof(struct xpath_predicate));
- res->which = XPATH_PREDICATE_BOOLEAN;
- res->u.boolean.op = p2;
- res->u.boolean.left = r1;
- res->u.boolean.right = r2;
-
- return (res);
- }
-
- if (strchr("><=] ", *p2)) {
- r1 = nmem_malloc(mem, sizeof(struct xpath_predicate));
-
- r1->which = XPATH_PREDICATE_RELATION;
- r1->u.relation.name = p1;
- r1->u.relation.op = p2;
-
- if ((p3 = get_xp_part(&pr, mem))) {
- r1->u.relation.value = p3;
- } else {
- /* error */
- }
- }
-
- if ((p4 = get_xp_part(&pr, mem))) {
- if (!strcmp (p4, "and") || !strcmp (p4, "or") || !strcmp (p4, "not")) {
-
- r2 = get_xpath_predicate (pr, mem);
-
- res = nmem_malloc(mem, sizeof(struct xpath_predicate));
- res->which = XPATH_PREDICATE_BOOLEAN;
- res->u.boolean.op = p4;
- res->u.boolean.left = r1;
- res->u.boolean.right = r2;
- return (res);
- } else {
- /* error */
- }
- } else {
- return (r1);
- }
-
- } else {
- r1 = nmem_malloc(mem, sizeof(struct xpath_predicate));
-
- r1->which = XPATH_PREDICATE_RELATION;
- r1->u.relation.name = p1;
- r1->u.relation.op = "";
- r1->u.relation.value = "";
-
- return (r1);
+struct xpath_predicate *get_xpath_predicate(char *predicates, NMEM mem)
+{
+ char *p1;
+ char *p2;
+ char *p3;
+ char *p4;
+
+ struct xpath_predicate *r1;
+ struct xpath_predicate *r2;
+ struct xpath_predicate *res = 0;
+
+ char *pr = predicates;
+
+ if ((p1 = get_xp_part(&pr, mem))) {
+ if ((p2 = get_xp_part(&pr, mem))) {
+ if (!strcmp (p2, "and") || !strcmp (p2, "or") || !strcmp (p2, "not")) {
+ r1=nmem_malloc(mem, sizeof(struct xpath_predicate));
+ r1->which = XPATH_PREDICATE_RELATION;
+ r1->u.relation.name = p1;
+ r1->u.relation.op = "";
+ r1->u.relation.value = "";
+
+ r2 = get_xpath_predicate (pr, mem);
+
+ res = nmem_malloc(mem, sizeof(struct xpath_predicate));
+ res->which = XPATH_PREDICATE_BOOLEAN;
+ res->u.boolean.op = p2;
+ res->u.boolean.left = r1;
+ res->u.boolean.right = r2;
+
+ return (res);
+ }
+
+ if (strchr("><=] ", *p2)) {
+ r1 = nmem_malloc(mem, sizeof(struct xpath_predicate));
+
+ r1->which = XPATH_PREDICATE_RELATION;
+ r1->u.relation.name = p1;
+ r1->u.relation.op = p2;
+ r1->u.relation.value = "";
+
+ if ((p3 = get_xp_part(&pr, mem))) {
+ r1->u.relation.value = p3;
+ } else {
+ /* error */
+ }
+ }
+
+ if ((p4 = get_xp_part(&pr, mem))) {
+ if (!strcmp (p4, "and") || !strcmp (p4, "or") ||
+ !strcmp (p4, "not"))
+ {
+
+ r2 = get_xpath_predicate (pr, mem);
+
+ res = nmem_malloc(mem, sizeof(struct xpath_predicate));
+ res->which = XPATH_PREDICATE_BOOLEAN;
+ res->u.boolean.op = p4;
+ res->u.boolean.left = r1;
+ res->u.boolean.right = r2;
+ return (res);
+ } else {
+ /* error */
+ }
+ } else {
+ return (r1);
+ }
+
+ } else {
+ r1 = nmem_malloc(mem, sizeof(struct xpath_predicate));
+
+ r1->which = XPATH_PREDICATE_RELATION;
+ r1->u.relation.name = p1;
+ r1->u.relation.op = "";
+ r1->u.relation.value = "";
+
+ return (r1);
+ }
}
- }
- return 0;
+ return 0;
}
int parse_xpath_str(const char *xpath_string,
{
const char *cp;
char *a;
-
+
int no = 0;
if (!xpath_string || *xpath_string != '/')
return -1;
cp = xpath_string;
-
+
while (*cp)
{
int i = 0;
return no;
}
-void dump_xp_predicate (struct xpath_predicate *p) {
+void dump_xp_predicate (struct xpath_predicate *p)
+{
if (p) {
- if (p->which == XPATH_PREDICATE_RELATION &&
+ if (p->which == XPATH_PREDICATE_RELATION &&
p->u.relation.name[0]) {
- fprintf (stderr, "%s,%s,%s",
- p->u.relation.name,
- p->u.relation.op,
- p->u.relation.value);
- } else {
- fprintf (stderr, "(");
- dump_xp_predicate(p->u.boolean.left);
- fprintf (stderr, ") %s (", p->u.boolean.op);
- dump_xp_predicate(p->u.boolean.right);
- fprintf (stderr, ")");
- }
+ fprintf (stderr, "%s,%s,%s",
+ p->u.relation.name,
+ p->u.relation.op,
+ p->u.relation.value);
+ } else {
+ fprintf (stderr, "(");
+ dump_xp_predicate(p->u.boolean.left);
+ fprintf (stderr, ") %s (", p->u.boolean.op);
+ dump_xp_predicate(p->u.boolean.right);
+ fprintf (stderr, ")");
+ }
}
}
-void dump_xp_steps (struct xpath_location_step *xpath, int no) {
- int i;
- for (i=0; i<no; i++) {
- fprintf (stderr, "Step %d: %s ",i,xpath[i].part);
- dump_xp_predicate(xpath[i].predicate);
- fprintf (stderr, "\n");
- }
+void dump_xp_steps (struct xpath_location_step *xpath, int no)
+{
+ int i;
+ for (i=0; i<no; i++) {
+ fprintf (stderr, "Step %d: %s ",i,xpath[i].part);
+ dump_xp_predicate(xpath[i].predicate);
+ fprintf (stderr, "\n");
+ }
}