using yaz/log.h again
[idzebra-moved-to-github.git] / recctrl / recgrs.c
index 58ad1bb..1c34c2e 100644 (file)
@@ -1,5 +1,5 @@
-/* $Id: recgrs.c,v 1.65 2002-08-30 12:44:31 adam Exp $
-   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
+/* $Id: recgrs.c,v 1.95 2004-12-13 20:51:32 adam Exp $
+   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
    Index Data Aps
 
 This file is part of the Zebra server.
@@ -25,99 +25,322 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include <sys/types.h>
 #ifndef WIN32
 #include <unistd.h>
+#include <dlfcn.h>
 #endif
 
 #include <yaz/log.h>
 #include <yaz/oid.h>
 
-#include <recctrl.h>
-#include "grsread.h"
+#include <d1_absyn.h>
+#include <idzebra/recgrs.h>
 
 #define GRS_MAX_WORD 512
 
-struct grs_handler {
-    RecTypeGrs type;
-    void *clientData;
-    int initFlag;
-    struct grs_handler *next;
+struct source_parser {
+    int len;
+    const char *tok;
+    const char *src;
+    int lookahead;
 };
 
-struct grs_handlers {
-    struct grs_handler *handlers;
-};
-
-static int read_grs_type (struct grs_handlers *h,
-                         struct grs_read_info *p, const char *type,
-                         data1_node **root)
+static int sp_lex(struct source_parser *sp)
 {
-    struct grs_handler *gh = h->handlers;
-    const char *cp = strchr (type, '.');
-
-    if (cp == NULL || cp == type)
+    while (*sp->src == ' ')
+       (sp->src)++;
+    sp->tok = sp->src;
+    sp->len = 0;
+    while (*sp->src && !strchr("<>();,-: ", *sp->src))
     {
-        cp = strlen(type) + type;
-        *p->type = 0;
+       sp->src++;
+       sp->len++;
     }
+    if (sp->len)
+       sp->lookahead = 't';
     else
-        strcpy (p->type, cp+1);
-    for (gh = h->handlers; gh; gh = gh->next)
     {
-        if (!memcmp (type, gh->type->type, cp-type))
+       sp->lookahead = *sp->src;
+       if (*sp->src)
+           sp->src++;
+    }
+    return sp->lookahead;
+}
+
+
+static int sp_expr(struct source_parser *sp, data1_node *n, RecWord *wrd)
+{
+    if (sp->lookahead != 't')
+       return 0;
+    if (sp->len == 4 && !memcmp(sp->tok, "data", sp->len))
+    {
+       if (n->which == DATA1N_data)
        {
-           if (!gh->initFlag)
+           wrd->string = n->u.data.data;
+           wrd->length = n->u.data.len;
+       }
+       sp_lex(sp);
+    }
+    else if (sp->len == 3 && !memcmp(sp->tok, "tag", sp->len))
+    {
+       if (n->which == DATA1N_tag)
+       {               
+           wrd->string = n->u.tag.tag;
+           wrd->length = strlen(n->u.tag.tag);
+       }
+       sp_lex(sp);
+    }
+    else if (sp->len == 4 && !memcmp(sp->tok, "attr", sp->len))
+    {
+       sp_lex(sp);
+       if (sp->lookahead != '(')
+           return 0;
+       sp_lex(sp);
+       if (sp->lookahead != 't')
+           return 0;
+       
+       if (n->which == DATA1N_tag)
+       {
+           data1_xattr *p = n->u.tag.attributes;
+           while (p && strlen(p->name) != sp->len && 
+                  memcmp (p->name, sp->tok, sp->len))
+               p = p->next;
+           if (p)
            {
-               gh->initFlag = 1;
-               gh->clientData = (*gh->type->init)();
+               wrd->string = p->value;
+               wrd->length = strlen(p->value);
            }
-           p->clientData = gh->clientData;
-            *root = (gh->type->read)(p);
-           gh->clientData = p->clientData;
+       }
+       sp_lex(sp);
+       if (sp->lookahead != ')')
+           return 0;
+       sp_lex(sp);
+    }
+    else if (sp->len == 5 && !memcmp(sp->tok, "range", sp->len))
+    {
+       int start, len;
+       sp_lex(sp);
+       if (sp->lookahead != '(')
+           return 0;
+       
+       sp_lex(sp);
+       sp_expr(sp, n, wrd);
+       if (sp->lookahead != ',')
+           return 0;
+       
+       sp_lex(sp);
+       if (sp->lookahead != 't')
+           return 0;
+       start = atoi_n(sp->tok, sp->len);
+       
+       sp_lex(sp);
+       if (sp->lookahead != ',')
+           return 0;
+       
+       sp_lex(sp);
+       if (sp->lookahead != 't')
+           return 0;
+       len = atoi_n(sp->tok, sp->len);
+       
+       sp_lex(sp);
+       if (sp->lookahead != ')')
            return 0;
+       
+       sp_lex(sp);
+       if (wrd->string && wrd->length)
+       {
+           wrd->string += start;
+           wrd->length -= start;
+           if (wrd->length > len)
+               wrd->length = len;
        }
     }
     return 1;
 }
 
-static void grs_add_handler (struct grs_handlers *h, RecTypeGrs t)
+static int sp_parse(data1_node *n, RecWord *wrd, const char *src)
 {
-    struct grs_handler *gh = (struct grs_handler *) xmalloc (sizeof(*gh));
-    gh->next = h->handlers;
-    h->handlers = gh;
-    gh->initFlag = 0;
-    gh->clientData = 0;
-    gh->type = t;
+    struct source_parser sp;
+    sp.len = 0;
+    sp.tok = 0;
+    sp.src = src;
+    sp.lookahead = 0;
+    sp_lex(&sp);
+
+    return sp_expr(&sp, n, wrd);
 }
 
-static void *grs_init(RecType recType)
+int d1_check_xpath_predicate(data1_node *n, struct xpath_predicate *p)
 {
-    struct grs_handlers *h = (struct grs_handlers *) xmalloc (sizeof(*h));
-    h->handlers = 0;
-
-    grs_add_handler (h, recTypeGrs_sgml);
-    grs_add_handler (h, recTypeGrs_regx);
-#if HAVE_TCL_H
-    grs_add_handler (h, recTypeGrs_tcl);
-#endif
-    grs_add_handler (h, recTypeGrs_marc);
-#if HAVE_EXPAT_H
-    grs_add_handler (h, recTypeGrs_xml);
-#endif
-    return h;
+    int res = 1;
+    char *attname;
+    data1_xattr *attr;
+    
+    if (!p) {
+        return 1;
+    } else {
+        if (p->which == XPATH_PREDICATE_RELATION) {
+            if (p->u.relation.name[0]) {
+                if (*p->u.relation.name != '@') {
+                    yaz_log(YLOG_WARN, 
+                         "  Only attributes (@) are supported in xelm xpath predicates");
+                    yaz_log(YLOG_WARN, "predicate %s ignored", p->u.relation.name);
+                    return (1);
+                }
+                attname = p->u.relation.name + 1;
+                res = 0;
+                /* looking for the attribute with a specified name */
+                for (attr = n->u.tag.attributes; attr; attr = attr->next) {
+                    yaz_log(YLOG_DEBUG,"  - attribute %s <-> %s", attname, attr->name );
+                    
+                    if (!strcmp(attr->name, attname)) {
+                        if (p->u.relation.op[0]) {
+                            if (*p->u.relation.op != '=') {
+                                yaz_log(YLOG_WARN, 
+                                     "Only '=' relation is supported (%s)",p->u.relation.op);
+                                yaz_log(YLOG_WARN, "predicate %s ignored", p->u.relation.name);
+                                res = 1; break;
+                            } else {
+                                yaz_log(YLOG_DEBUG,"    - value %s <-> %s", 
+                                     p->u.relation.value, attr->value );
+                                if (!strcmp(attr->value, p->u.relation.value)) {
+                                    res = 1; break;
+                                } 
+                            }
+                        } else {
+                            /* attribute exists, no value specified */
+                            res = 1; break;
+                        }
+                    }
+                }
+               yaz_log(YLOG_DEBUG, "return %d", res);
+                return res;
+            } else {
+                return 1;
+            }
+        } 
+        else if (p->which == XPATH_PREDICATE_BOOLEAN) {
+            if (!strcmp(p->u.boolean.op,"and")) {
+                return d1_check_xpath_predicate(n, p->u.boolean.left) 
+                    && d1_check_xpath_predicate(n, p->u.boolean.right); 
+            }
+            else if (!strcmp(p->u.boolean.op,"or")) {
+                return (d1_check_xpath_predicate(n, p->u.boolean.left) 
+                        || d1_check_xpath_predicate(n, p->u.boolean.right)); 
+            } else {
+                yaz_log(YLOG_WARN, "Unknown boolean relation %s, ignored",p->u.boolean.op);
+                return 1;
+            }
+        }
+    }
+    return 0;
 }
 
-static void grs_destroy(void *clientData)
+
+/* *ostrich*
+   
+New function, looking for xpath "element" definitions in abs, by
+tagpath, using a kind of ugly regxp search.The DFA was built while
+parsing abs, so here we just go trough them and try to match
+against the given tagpath. The first matching entry is returned.
+
+pop, 2002-12-13
+
+Added support for enhanced xelm. Now [] predicates are considered
+as well, when selecting indexing rules... (why the hell it's called
+termlist???)
+
+pop, 2003-01-17
+
+*/
+
+data1_termlist *xpath_termlist_by_tagpath(char *tagpath, data1_node *n)
 {
-    struct grs_handlers *h = (struct grs_handlers *) clientData;
-    struct grs_handler *gh = h->handlers, *gh_next;
-    while (gh)
+    data1_absyn *abs = n->root->u.root.absyn;
+    data1_xpelement *xpe = abs->xp_elements;
+    data1_node *nn;
+#ifdef ENHANCED_XELM 
+    struct xpath_location_step *xp;
+
+#endif
+    char *pexpr = xmalloc(strlen(tagpath)+2);
+    int ok = 0;
+    
+    sprintf (pexpr, "%s\n", tagpath);
+    yaz_log(YLOG_DEBUG,"Checking tagpath %s",tagpath);
+    while (xpe) 
     {
-       gh_next = gh->next;
-       if (gh->initFlag)
-           (*gh->type->destroy)(gh->clientData);
-       xfree (gh);
-       gh = gh_next;
+        struct DFA_state **dfaar = xpe->dfa->states;
+        struct DFA_state *s=dfaar[0];
+        struct DFA_tran *t;
+        const char *p;
+        int i;
+        unsigned char c;
+        int start_line = 1;
+
+        c = *pexpr++; t = s->trans; i = s->tran_no;
+       if ((c >= t->ch[0] && c <= t->ch[1]) || (!t->ch[0])) {
+            p = pexpr;
+            do {
+                if ((s = dfaar[t->to])->rule_no && 
+                    (start_line || s->rule_nno))  {
+                    ok = 1;
+                    break;
+                }
+                for (t=s->trans, i=s->tran_no; --i >= 0; t++) {
+                    if ((unsigned) *p >= t->ch[0] && (unsigned) *p <= t->ch[1])
+                        break;
+                }
+                p++;
+            } while (i >= 0);
+       }
+       if (ok)
+           yaz_log(YLOG_DEBUG," xpath match %s",xpe->xpath_expr);
+       else
+           yaz_log(YLOG_DEBUG," xpath no match %s",xpe->xpath_expr);
+
+        pexpr--;
+        if (ok) {
+#ifdef ENHANCED_XELM 
+            /* we have to check the perdicates up to the root node */
+            xp = xpe->xpath;
+            
+            /* find the first tag up in the node structure */
+            nn = n; while (nn && nn->which != DATA1N_tag) {
+                nn = nn->parent;
+            }
+            
+            /* go from inside out in the node structure, while going
+               backwards trough xpath location steps ... */
+            for (i=xpe->xpath_len - 1; i>0; i--) {
+                
+                yaz_log(YLOG_DEBUG,"Checking step %d: %s on tag %s",
+                    i,xp[i].part,nn->u.tag.tag);
+                
+                if (!d1_check_xpath_predicate(nn, xp[i].predicate)) {
+                    yaz_log(YLOG_DEBUG,"  Predicates didn't match");
+                    ok = 0;
+                    break;
+                }
+                
+                if (nn->which == DATA1N_tag) {
+                    nn = nn->parent;
+                }
+            }
+#endif
+            if (ok) {
+                break;
+            }
+       }
+        xpe = xpe->next;
+    } 
+    
+    xfree(pexpr);
+    
+    if (ok) {
+      yaz_log(YLOG_DEBUG,"Got it");
+        return xpe->termlists;
+    } else {
+        return NULL;
     }
-    xfree (h);
 }
 
 /* use
@@ -128,8 +351,44 @@ static void grs_destroy(void *clientData)
 
   1016   cdata
   1015   attr data
+
+  *ostrich*
+
+  Now, if there is a matching xelm described in abs, for the
+  indexed element or the attribute,  then the data is handled according 
+  to those definitions...
+
+  modified by pop, 2002-12-13
 */
 
+/* add xpath index for an attribute */
+static void index_xpath_attr (char *tag_path, char *name, char *value,
+                             char *structure, struct recExtractCtrl *p,
+                             RecWord *wrd)
+{
+    wrd->attrSet = VAL_IDXPATH;
+    wrd->attrUse = 1;
+    wrd->reg_type = '0';
+    wrd->string = tag_path;
+    wrd->length = strlen(tag_path);
+    (*p->tokenAdd)(wrd);
+    
+    if (value) {
+        wrd->attrUse = 1015;
+        wrd->reg_type = 'w';
+        wrd->string = value;
+        wrd->length = strlen(value);
+        (*p->tokenAdd)(wrd);
+    }
+    
+    wrd->attrUse = 2;
+    wrd->reg_type = '0';
+    wrd->string = tag_path;
+    wrd->length = strlen(tag_path);
+    (*p->tokenAdd)(wrd);
+}
+
+
 static void index_xpath (data1_node *n, struct recExtractCtrl *p,
                          int level, RecWord *wrd, int use)
 {
@@ -137,28 +396,107 @@ static void index_xpath (data1_node *n, struct recExtractCtrl *p,
     char tag_path_full[1024];
     size_t flen = 0;
     data1_node *nn;
+    int termlist_only = 1;
+    data1_termlist *tl;
+    int xpdone = 0;
+
+    yaz_log(YLOG_DEBUG, "index_xpath level=%d use=%d", level, use);
+    if ((!n->root->u.root.absyn) ||
+       (n->root->u.root.absyn->enable_xpath_indexing)) {
+      termlist_only = 0;
+    }
 
     switch (n->which)
     {
     case DATA1N_data:
-        wrd->reg_type = 'w';
         wrd->string = n->u.data.data;
         wrd->length = n->u.data.len;
-        wrd->attrSet = VAL_IDXPATH,
-        wrd->attrUse = use;
-        if (p->flagShowRecords)
-        {
-            printf("%*s data=", (level + 1) * 4, "");
-            for (i = 0; i<wrd->length && i < 8; i++)
-                fputc (wrd->string[i], stdout);
-            printf("\n");
-        }
-        else
-        {
-            (*p->tokenAdd)(wrd);
-        }
+        xpdone = 0;
+        flen = 0;
+            
+       /* we have to fetch the whole path to the data tag */
+       for (nn = n; nn; nn = nn->parent) {
+           if (nn->which == DATA1N_tag) {
+               size_t tlen = strlen(nn->u.tag.tag);
+               if (tlen + flen > (sizeof(tag_path_full)-2)) return;
+               memcpy (tag_path_full + flen, nn->u.tag.tag, tlen);
+               flen += tlen;
+               tag_path_full[flen++] = '/';
+           }
+           else if (nn->which == DATA1N_root)  break;
+       }
+       
+       tag_path_full[flen] = 0;
+       
+       /* If we have a matching termlist... */
+       if (n->root->u.root.absyn && 
+           (tl = xpath_termlist_by_tagpath(tag_path_full, n)))
+       {
+           for (; tl; tl = tl->next)
+           {
+               /* need to copy recword because it may be changed */
+               RecWord wrd_tl;
+               wrd->reg_type = *tl->structure;
+               /* this is the ! case, so structure is for the xpath index */
+               memcpy (&wrd_tl, wrd, sizeof(*wrd));
+               if (tl->source)
+                   sp_parse(n, &wrd_tl, tl->source);
+               if (!tl->att) {
+                   wrd_tl.attrSet = VAL_IDXPATH;
+                   wrd_tl.attrUse = use;
+                   if (p->flagShowRecords)
+                   {
+                       int i;
+                       printf("%*sXPath index", (level + 1) * 4, "");
+                       printf (" XData:\"");
+                       for (i = 0; i<wrd_tl.length && i < 40; i++)
+                           fputc (wrd_tl.string[i], stdout);
+                       fputc ('"', stdout);
+                       if (wrd_tl.length > 40)
+                           printf (" ...");
+                       fputc ('\n', stdout);
+                   }
+                   else
+                       (*p->tokenAdd)(&wrd_tl);
+                   xpdone = 1;
+               } else {
+                   /* this is just the old fashioned attribute based index */
+                   wrd_tl.attrSet = (int) (tl->att->parent->reference);
+                   wrd_tl.attrUse = tl->att->locals->local;
+                   if (p->flagShowRecords)
+                   {
+                       int i;
+                       printf("%*sIdx: [%s]", (level + 1) * 4, "",
+                              tl->structure);
+                       printf("%s:%s [%d] %s",
+                              tl->att->parent->name,
+                              tl->att->name, tl->att->value,
+                              tl->source);
+                       printf (" XData:\"");
+                       for (i = 0; i<wrd_tl.length && i < 40; i++)
+                           fputc (wrd_tl.string[i], stdout);
+                       fputc ('"', stdout);
+                       if (wrd_tl.length > 40)
+                           printf (" ...");
+                       fputc ('\n', stdout);
+                   }
+                   else
+                       (*p->tokenAdd)(&wrd_tl);
+               }
+           }
+       }
+       /* xpath indexing is done, if there was no termlist given, 
+          or no ! in the termlist, and default indexing is enabled... */
+       if (!p->flagShowRecords && !xpdone && !termlist_only)
+       {
+           wrd->attrSet = VAL_IDXPATH;
+           wrd->attrUse = use;
+           wrd->reg_type = 'w';
+           (*p->tokenAdd)(wrd);
+       }
         break;
     case DATA1N_tag:
+        flen = 0;
         for (nn = n; nn; nn = nn->parent)
         {
             if (nn->which == DATA1N_tag)
@@ -173,6 +511,8 @@ static void index_xpath (data1_node *n, struct recExtractCtrl *p,
             else if (nn->which == DATA1N_root)
                 break;
         }
+
+
         wrd->reg_type = '0';
         wrd->string = tag_path_full;
         wrd->length = flen;
@@ -190,69 +530,137 @@ static void index_xpath (data1_node *n, struct recExtractCtrl *p,
         else
         {
             data1_xattr *xp;
-            (*p->tokenAdd)(wrd);   /* index element pag (AKA tag path) */
-            if (use == 1)
+            data1_termlist *tl;
+           int do_xpindex;
+            
+           tag_path_full[flen] = 0;
+            
+            /* Add tag start/end xpath index, only when there is a ! in the apropriate xelm
+               directive, or default xpath indexing is enabled */
+           if (!(do_xpindex = 1 - termlist_only)) {
+                if ((tl = xpath_termlist_by_tagpath(tag_path_full, n))) {
+                    for (; tl; tl = tl->next) { if (!tl->att) {do_xpindex = 1;} }
+                }
+           }
+           if (do_xpindex) {
+                (*p->tokenAdd)(wrd);   /* index element pag (AKA tag path) */
+           }
+            
+            if (use == 1) /* only for the starting tag... */
             {
-                for (xp = n->u.tag.attributes; xp; xp = xp->next)
-                {
+#define MAX_ATTR_COUNT 50
+                data1_termlist *tll[MAX_ATTR_COUNT];
+                
+                int i = 0;
+                
+                /* get termlists for attributes, and find out, if we have to do xpath indexing */
+                for (xp = n->u.tag.attributes; xp; xp = xp->next) {
+                    i++;
+                }
+                
+                i = 0;
+                for (xp = n->u.tag.attributes; xp; xp = xp->next) {
                     char comb[512];
-                    /* attribute  (no value) */
-                    wrd->reg_type = '0';
-                    wrd->attrUse = 3;
-                    wrd->string = xp->name;
-                    wrd->length = strlen(xp->name);
+                    int do_xpindex = 1 - termlist_only;
+                    data1_termlist *tl;
+                    char attr_tag_path_full[1024]; 
+                    int int_len = flen;
                     
-                    wrd->seqno--;
-                    (*p->tokenAdd)(wrd);
-
-                    if (xp->value &&
-                        strlen(xp->name) + strlen(xp->value) < sizeof(comb)-2)
+                    /* this could be cached as well */
+                    sprintf (attr_tag_path_full, "@%s/%.*s",
+                             xp->name, int_len, tag_path_full);
+                    
+                    tll[i] = xpath_termlist_by_tagpath(attr_tag_path_full,n);
+                    
+                    /* if there is a ! in the xelm termlist, or default indexing is on, 
+                       proceed with xpath idx */
+                    if ((tl = tll[i]))
                     {
-                        /* attribute value exact */
-                        strcpy (comb, xp->name);
-                        strcat (comb, "=");
-                        strcat (comb, xp->value);
+                        for (; tl; tl = tl->next)
+                        { 
+                            if (!tl->att)
+                                do_xpindex = 1;
+                        }
+                    }
+                    
+                    if (do_xpindex) {
                         
-                        wrd->attrUse = 3;
+                        /* attribute  (no value) */
                         wrd->reg_type = '0';
-                        wrd->string = comb;
-                        wrd->length = strlen(comb);
-                        wrd->seqno--;
+                        wrd->attrUse = 3;
+                        wrd->string = xp->name;
+                        wrd->length = strlen(xp->name);
                         
+                        wrd->seqno--;
                         (*p->tokenAdd)(wrd);
-                    }
-                }                
-                for (xp = n->u.tag.attributes; xp; xp = xp->next)
-                {
+                        
+                        if (xp->value &&
+                            strlen(xp->name) + strlen(xp->value) < sizeof(comb)-2) {
+                            
+                            /* attribute value exact */
+                            strcpy (comb, xp->name);
+                            strcat (comb, "=");
+                            strcat (comb, xp->value);
+                            
+                            wrd->attrUse = 3;
+                            wrd->reg_type = '0';
+                            wrd->string = comb;
+                            wrd->length = strlen(comb);
+                            wrd->seqno--;
+                            
+                            (*p->tokenAdd)(wrd);
+                        }
+                    }                
+                    i++;
+                }
+                
+                i = 0;
+                for (xp = n->u.tag.attributes; xp; xp = xp->next) {
+                    data1_termlist *tl;
                     char attr_tag_path_full[1024];
                     int int_len = flen;
+                    int xpdone = 0;
                     
                     sprintf (attr_tag_path_full, "@%s/%.*s",
                              xp->name, int_len, tag_path_full);
-
-                    wrd->reg_type = '0';
-                    wrd->attrUse = 1;
-                    wrd->string = attr_tag_path_full;
-                    wrd->length = strlen(attr_tag_path_full);
-                    (*p->tokenAdd)(wrd);
                     
-                   if (xp->value)
-                   {
-                        wrd->attrUse = 1015;
-                        wrd->reg_type = 'w';
-                        wrd->string = xp->value;
-                        wrd->length = strlen(xp->value);
-                        (*p->tokenAdd)(wrd);
+                    if ((tl = tll[i]))
+                    {
+                        /* If there is a termlist given (=xelm directive) */
+                        for (; tl; tl = tl->next)
+                        {
+                            if (!tl->att) {
+                                /* add xpath index for the attribute */
+                                index_xpath_attr (attr_tag_path_full, xp->name,
+                                                  xp->value, tl->structure,
+                                                  p, wrd);
+                                xpdone = 1;
+                            } else {
+                                /* add attribute based index for the attribute */
+                                if (xp->value) {
+                                    wrd->attrSet = (int) 
+                                        (tl->att->parent->reference);
+                                    wrd->attrUse = tl->att->locals->local;
+                                    wrd->reg_type = *tl->structure;
+                                    wrd->string = xp->value;
+                                    wrd->length = strlen(xp->value);
+                                    (*p->tokenAdd)(wrd);
+                                }
+                            }
+                        }
                     }
-                    
-                    wrd->reg_type = '0';
-                    wrd->attrUse = 2;
-                    wrd->string = attr_tag_path_full;
-                    wrd->length = strlen(attr_tag_path_full);
-                    (*p->tokenAdd)(wrd);
+                    /* if there was no termlist for the given path, 
+                       or the termlist didn't have a ! element, index 
+                       the attribute as "w" */
+                    if ((!xpdone) && (!termlist_only))
+                    {
+                        index_xpath_attr (attr_tag_path_full, xp->name,
+                                          xp->value,  "w", p, wrd);
+                    }
+                    i++;
                 }
             }
-        }
+       }
     }
 }
 
@@ -261,6 +669,7 @@ static void index_termlist (data1_node *par, data1_node *n,
 {
     data1_termlist *tlist = 0;
     data1_datatype dtype = DATA1K_string;
+
     /*
      * cycle up towards the root until we find a tag with an att..
      * this has the effect of indexing locally defined tags with
@@ -268,41 +677,20 @@ static void index_termlist (data1_node *par, data1_node *n,
      */
     
     while (!par->u.tag.element)
-       if (!par->parent || !(par=get_parent_tag(p->dh, par->parent)))
-           break;
+        if (!par->parent || !(par=get_parent_tag(p->dh, par->parent)))
+            break;
     if (!par || !(tlist = par->u.tag.element->termlists))
-       return;
+        return;
     if (par->u.tag.element->tag)
-       dtype = par->u.tag.element->tag->kind;
+        dtype = par->u.tag.element->tag->kind;
     
     for (; tlist; tlist = tlist->next)
     {
-       char xattr[512];
        /* consider source */
        wrd->string = 0;
-       
-       if (!strcmp (tlist->source, "data") && n->which == DATA1N_data)
-       {
-           wrd->string = n->u.data.data;
-           wrd->length = n->u.data.len;
-       }
-       else if (!strcmp (tlist->source, "tag") && n->which == DATA1N_tag)
-        {
-           wrd->string = n->u.tag.tag;
-           wrd->length = strlen(n->u.tag.tag);
-       }
-       else if (sscanf (tlist->source, "attr(%511[^)])", xattr) == 1 &&
-           n->which == DATA1N_tag)
-       {
-           data1_xattr *p = n->u.tag.attributes;
-           while (p && strcmp (p->name, xattr))
-               p = p->next;
-           if (p)
-           {
-               wrd->string = p->value;
-               wrd->length = strlen(p->value);
-           }
-       }
+       assert(tlist->source);
+       sp_parse(n, wrd, tlist->source);
+
        if (wrd->string)
        {
            if (p->flagShowRecords)
@@ -314,11 +702,11 @@ static void index_termlist (data1_node *par, data1_node *n,
                       tlist->att->parent->name,
                       tlist->att->name, tlist->att->value,
                       tlist->source);
-               printf (" data=\"");
-               for (i = 0; i<wrd->length && i < 8; i++)
+               printf (" XData:\"");
+               for (i = 0; i<wrd->length && i < 40; i++)
                    fputc (wrd->string[i], stdout);
                fputc ('"', stdout);
-               if (wrd->length > 8)
+               if (wrd->length > 40)
                    printf (" ...");
                fputc ('\n', stdout);
            }
@@ -379,13 +767,9 @@ static int dumpkeys(data1_node *n, struct recExtractCtrl *p, int level,
        {
             index_termlist (n, n, p, level, wrd);
             /* index start tag */
-            assert (n->root->u.root.absyn);
-            
-            if (!n->root->u.root.absyn)
-                index_xpath (n, p, level, wrd, 1);
-            else if (n->root->u.root.absyn->enable_xpath_indexing)
-                index_xpath (n, p, level, wrd, 1);
-       }
+           if (n->root->u.root.absyn)
+               index_xpath (n, p, level, wrd, 1);
+       }
 
        if (n->child)
            if (dumpkeys(n->child, p, level + 1, wrd) < 0)
@@ -401,8 +785,8 @@ static int dumpkeys(data1_node *n, struct recExtractCtrl *p, int level,
                printf("%*s", level * 4, "");
                printf("Data: ");
                if (n->u.data.len > 256)
-                   printf("'%.240s ... %.6s'\n", n->u.data.data,
-                          n->u.data.data + n->u.data.len-6);
+                   printf("'%.170s ... %.70s'\n", n->u.data.data,
+                          n->u.data.data + n->u.data.len-70);
                else if (n->u.data.len > 0)
                    printf("'%.*s'\n", n->u.data.len, n->u.data.data);
                else
@@ -411,19 +795,14 @@ static int dumpkeys(data1_node *n, struct recExtractCtrl *p, int level,
 
            if (par)
                index_termlist (par, n, p, level, wrd);
-            if (!n->root->u.root.absyn)
-                index_xpath (n, p, level, wrd, 1016);
-            else if (n->root->u.root.absyn->enable_xpath_indexing)
-                index_xpath (n, p, level, wrd, 1016);
+
+           index_xpath (n, p, level, wrd, 1016);
        }
 
        if (n->which == DATA1N_tag)
        {
             /* index end tag */
-            if (!n->root->u.root.absyn)
-                index_xpath (n, p, level, wrd, 2);
-            else if (n->root->u.root.absyn->enable_xpath_indexing)
-                index_xpath (n, p, level, wrd, 2);
+           index_xpath (n, p, level, wrd, 2);
        }
 
        if (p->flagShowRecords && n->which == DATA1N_root)
@@ -454,8 +833,9 @@ int grs_extract_tree(struct recExtractCtrl *p, data1_node *n)
     return dumpkeys(n, p, 0, &wrd);
 }
 
-static int grs_extract_sub(struct grs_handlers *h, struct recExtractCtrl *p,
-                          NMEM mem)
+static int grs_extract_sub(void *clientData, struct recExtractCtrl *p,
+                          NMEM mem,
+                          data1_node *(*grs_read)(struct grs_read_info *))
 {
     data1_node *n;
     struct grs_read_info gri;
@@ -471,9 +851,9 @@ static int grs_extract_sub(struct grs_handlers *h, struct recExtractCtrl *p,
     gri.offset = p->offset;
     gri.mem = mem;
     gri.dh = p->dh;
+    gri.clientData = clientData;
 
-    if (read_grs_type (h, &gri, p->subType, &n))
-       return RECCTRL_EXTRACT_ERROR_NO_SUCH_FILTER;
+    n = (*grs_read)(&gri);
     if (!n)
         return RECCTRL_EXTRACT_EOF;
     oe.proto = PROTO_Z3950;
@@ -488,6 +868,7 @@ static int grs_extract_sub(struct grs_handlers *h, struct recExtractCtrl *p,
         if ((oid_ent_to_oid (&oe, oidtmp)))
             (*p->schemaAdd)(p, oidtmp);
     }
+    data1_concat_text(p->dh, mem, n);
 
     /* ensure our data1 tree is UTF-8 */
     data1_iconv (p->dh, mem, n, "UTF-8", data1_get_encoding(p->dh, n));
@@ -506,13 +887,12 @@ static int grs_extract_sub(struct grs_handlers *h, struct recExtractCtrl *p,
     return RECCTRL_EXTRACT_OK;
 }
 
-static int grs_extract(void *clientData, struct recExtractCtrl *p)
+int zebra_grs_extract(void *clientData, struct recExtractCtrl *p,
+                     data1_node *(*grs_read)(struct grs_read_info *))
 {
     int ret;
     NMEM mem = nmem_create ();
-    struct grs_handlers *h = (struct grs_handlers *) clientData;
-
-    ret = grs_extract_sub(h, p, mem);
+    ret = grs_extract_sub(clientData, p, mem, grs_read);
     nmem_destroy(mem);
     return ret;
 }
@@ -520,7 +900,8 @@ static int grs_extract(void *clientData, struct recExtractCtrl *p)
 /*
  * Return: -1: Nothing done. 0: Ok. >0: Bib-1 diagnostic.
  */
-static int process_comp(data1_handle dh, data1_node *n, Z_RecordComposition *c)
+static int process_comp(data1_handle dh, data1_node *n, Z_RecordComposition *c,
+                       char **addinfo, ODR o)
 {
     data1_esetname *eset;
     Z_Espec1 *espec = 0;
@@ -534,10 +915,11 @@ static int process_comp(data1_handle dh, data1_node *n, Z_RecordComposition *c)
        if (!(eset = data1_getesetbyname(dh, n->u.root.absyn,
                                         c->u.simple->u.generic)))
        {
-           logf(LOG_LOG, "Unknown esetname '%s'", c->u.simple->u.generic);
+           yaz_log(YLOG_LOG, "Unknown esetname '%s'", c->u.simple->u.generic);
+           *addinfo = odr_strdup(o, c->u.simple->u.generic);
            return 25; /* invalid esetname */
        }
-       logf(LOG_DEBUG, "Esetname '%s' in simple compspec",
+       yaz_log(YLOG_DEBUG, "Esetname '%s' in simple compspec",
             c->u.simple->u.generic);
        espec = eset->spec;
        break;
@@ -554,23 +936,24 @@ static int process_comp(data1_handle dh, data1_node *n, Z_RecordComposition *c)
                          data1_getesetbyname(dh, n->u.root.absyn,
                                              p->u.elementSetName)))
                    {
-                       logf(LOG_LOG, "Unknown esetname '%s'",
+                       yaz_log(YLOG_DEBUG, "Unknown esetname '%s'",
                             p->u.elementSetName);
+                       *addinfo = odr_strdup(o, p->u.elementSetName);
                        return 25; /* invalid esetname */
                    }
-                   logf(LOG_DEBUG, "Esetname '%s' in complex compspec",
+                   yaz_log(YLOG_DEBUG, "Esetname '%s' in complex compspec",
                         p->u.elementSetName);
                    espec = eset->spec;
                    break;
                case Z_ElementSpec_externalSpec:
                    if (p->u.externalSpec->which == Z_External_espec1)
                    {
-                       logf(LOG_DEBUG, "Got Espec-1");
+                       yaz_log(YLOG_DEBUG, "Got Espec-1");
                        espec = p->u.externalSpec-> u.espec1;
                    }
                    else
                    {
-                       logf(LOG_LOG, "Unknown external espec.");
+                       yaz_log(YLOG_LOG, "Unknown external espec.");
                        return 25; /* bad. what is proper diagnostic? */
                    }
                    break;
@@ -582,59 +965,66 @@ static int process_comp(data1_handle dh, data1_node *n, Z_RecordComposition *c)
     }
     if (espec)
     {
-        logf (LOG_DEBUG, "Element: Espec-1 match");
+        yaz_log(YLOG_DEBUG, "Element: Espec-1 match");
        return data1_doespec1(dh, n, espec);
     }
     else
     {
-       logf (LOG_DEBUG, "Element: all match");
+       yaz_log(YLOG_DEBUG, "Element: all match");
        return -1;
     }
 }
 
-static void add_nice_whitespace (struct recRetrieveCtrl *p, data1_node *top,
-                                 NMEM mem)
-{
-    data1_node *n = top->child;
-    while (n && n->which == DATA1N_data && n->u.data.what == DATA1I_text)
-    {
-        data1_mk_text_n(p->dh, mem, n->u.data.data, n->u.data.len, top);
-        n = n->next;
-    }
-}
+/* Add Zebra info in separate namespace ...
+        <root 
+         ...
+         <metadata xmlns="http://www.indexdata.dk/zebra/">
+          <size>359</size>
+          <localnumber>447</localnumber>
+          <filename>records/genera.xml</filename>
+         </metadata>
+        </root>
+*/
 
-static void add_idzebra_info (struct recRetrieveCtrl *p, data1_node *top,
-                              NMEM mem)
+static void zebra_xml_metadata (struct recRetrieveCtrl *p, data1_node *top,
+                                NMEM mem)
 {
-    const char *idzebra_ns[7];
+    const char *idzebra_ns[3];
+    const char *i2 = "\n  ";
+    const char *i4 = "\n    ";
+    data1_node *n;
 
-    idzebra_ns[0] = "xmlns:idzebra";
+    idzebra_ns[0] = "xmlns";
     idzebra_ns[1] = "http://www.indexdata.dk/zebra/";
     idzebra_ns[2] = 0;
 
-    data1_tag_add_attr (p->dh, mem, top, idzebra_ns);
+    data1_mk_text (p->dh, mem, i2, top);
+
+    n = data1_mk_tag (p->dh, mem, "idzebra", idzebra_ns, top);
+
+    data1_mk_text (p->dh, mem, "\n", top);
+
+    data1_mk_text (p->dh, mem, i4, n);
+    
+    data1_mk_tag_data_int (p->dh, n, "size", p->recordSize, mem);
 
-    add_nice_whitespace (p, top, mem);
-    data1_mk_tag_data_int (p->dh, top, "idzebra:size", p->recordSize,
-                           mem);
     if (p->score != -1)
     {
-        add_nice_whitespace (p, top, mem);
-        data1_mk_tag_data_int (p->dh, top, "idzebra:score",
-                               p->score, mem);
+        data1_mk_text (p->dh, mem, i4, n);
+        data1_mk_tag_data_int (p->dh, n, "score", p->score, mem);
     }
-    add_nice_whitespace (p, top, mem);
-    data1_mk_tag_data_int (p->dh, top, "idzebra:localnumber", p->localno,
-                           mem);
+    data1_mk_text (p->dh, mem, i4, n);
+    data1_mk_tag_data_zint (p->dh, n, "localnumber", p->localno, mem);
     if (p->fname)
     {
-        add_nice_whitespace (p, top, mem);
-        data1_mk_tag_data_text(p->dh, top, "idzebra:filename",
-                               p->fname, mem);
+        data1_mk_text (p->dh, mem, i4, n);
+        data1_mk_tag_data_text(p->dh, n, "filename", p->fname, mem);
     }
+    data1_mk_text (p->dh, mem, i2, n);
 }
 
-static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
+int zebra_grs_retrieve(void *clientData, struct recRetrieveCtrl *p,
+                      data1_node *(*grs_read)(struct grs_read_info *))
 {
     data1_node *node = 0, *onode = 0, *top;
     data1_node *dnew;
@@ -642,8 +1032,8 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
     int res, selected = 0;
     NMEM mem;
     struct grs_read_info gri;
-    char *tagname;
-    struct grs_handlers *h = (struct grs_handlers *) clientData;
+    const char *tagname;
+
     int requested_schema = VAL_NONE;
     data1_marctab *marctab;
     int dummy;
@@ -657,20 +1047,18 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
     gri.offset = 0;
     gri.mem = mem;
     gri.dh = p->dh;
+    gri.clientData = clientData;
 
-    logf (LOG_DEBUG, "grs_retrieve");
-    if (read_grs_type (h, &gri, p->subType, &node))
-    {
-       p->diagnostic = 14;
-        nmem_destroy (mem);
-       return 0;
-    }
+    yaz_log(YLOG_DEBUG, "grs_retrieve");
+    node = (*grs_read)(&gri);
     if (!node)
     {
        p->diagnostic = 14;
         nmem_destroy (mem);
        return 0;
     }
+    data1_concat_text(p->dh, mem, node);
+
     /* ensure our data1 tree is UTF-8 */
     data1_iconv (p->dh, mem, node, "UTF-8", data1_get_encoding(p->dh, node));
 
@@ -679,55 +1067,73 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
 #endif
     top = data1_get_root_tag (p->dh, node);
 
-    logf (LOG_DEBUG, "grs_retrieve: size");
-    if ((dnew = data1_mk_tag_data_wd(p->dh, top, "size", mem)))
+    yaz_log(YLOG_DEBUG, "grs_retrieve: size");
+    tagname = data1_systag_lookup(node->u.root.absyn, "size", "size");
+    if (tagname &&
+        (dnew = data1_mk_tag_data_wd(p->dh, top, tagname, mem)))
     {
        dnew->u.data.what = DATA1I_text;
        dnew->u.data.data = dnew->lbuf;
        sprintf(dnew->u.data.data, "%d", p->recordSize);
        dnew->u.data.len = strlen(dnew->u.data.data);
     }
-
-    tagname = res_get_def(p->res, "tagrank", "rank");
-    if (strcmp(tagname, "0") && p->score >= 0 &&
+    
+    tagname = data1_systag_lookup(node->u.root.absyn, "rank", "rank");
+    if (tagname && p->score >= 0 &&
        (dnew = data1_mk_tag_data_wd(p->dh, top, tagname, mem)))
     {
-        logf (LOG_DEBUG, "grs_retrieve: %s", tagname);
+        yaz_log(YLOG_DEBUG, "grs_retrieve: %s", tagname);
        dnew->u.data.what = DATA1I_num;
        dnew->u.data.data = dnew->lbuf;
        sprintf(dnew->u.data.data, "%d", p->score);
        dnew->u.data.len = strlen(dnew->u.data.data);
     }
 
-    tagname = res_get_def(p->res, "tagsysno", "localControlNumber");
-    if (strcmp(tagname, "0") && p->localno > 0 &&
-        (dnew = data1_mk_tag_data_wd(p->dh, top, tagname, mem)))
+    tagname = data1_systag_lookup(node->u.root.absyn, "sysno",
+                                  "localControlNumber");
+    if (tagname && p->localno > 0 &&
+        (dnew = data1_mk_tag_data_wd(p->dh, top, tagname, mem)))
     {
-        logf (LOG_DEBUG, "grs_retrieve: %s", tagname);
+        yaz_log(YLOG_DEBUG, "grs_retrieve: %s", tagname);
        dnew->u.data.what = DATA1I_text;
        dnew->u.data.data = dnew->lbuf;
-
-       sprintf(dnew->u.data.data, "%d", p->localno);
+        
+       sprintf(dnew->u.data.data, ZINT_FORMAT, p->localno);
        dnew->u.data.len = strlen(dnew->u.data.data);
     }
+
+    if (p->input_format == VAL_TEXT_XML)
+       zebra_xml_metadata (p, top, mem);
+
 #if 0
     data1_pr_tree (p->dh, node, stdout);
 #endif
+#if YAZ_VERSIONL >= 0x010903L
     if (p->comp && p->comp->which == Z_RecordComp_complex &&
        p->comp->u.complex->generic &&
-       p->comp->u.complex->generic->schema)
+        p->comp->u.complex->generic->which == Z_Schema_oid &&
+        p->comp->u.complex->generic->schema.oid)
+    {
+       oident *oe = oid_getentbyoid (p->comp->u.complex->generic->schema.oid);
+       if (oe)
+           requested_schema = oe->value;
+    }
+#else
+    if (p->comp && p->comp->which == Z_RecordComp_complex &&
+       p->comp->u.complex->generic && p->comp->u.complex->generic->schema)
     {
        oident *oe = oid_getentbyoid (p->comp->u.complex->generic->schema);
        if (oe)
            requested_schema = oe->value;
     }
+#endif
 
     /* If schema has been specified, map if possible, then check that
      * we got the right one 
      */
     if (requested_schema != VAL_NONE)
     {
-       logf (LOG_DEBUG, "grs_retrieve: schema mapping");
+       yaz_log(YLOG_DEBUG, "grs_retrieve: schema mapping");
        for (map = node->u.root.absyn->maptabs; map; map = map->next)
        {
            if (map->target_absyn_ref == requested_schema)
@@ -755,7 +1161,7 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
      * the overlap of schema and formatting which is inherent in the MARC
      * family)
      */
-    yaz_log (LOG_DEBUG, "grs_retrieve: syntax mapping");
+    yaz_log(YLOG_DEBUG, "grs_retrieve: syntax mapping");
     if (node->u.root.absyn)
         for (map = node->u.root.absyn->maptabs; map; map = map->next)
         {
@@ -771,7 +1177,7 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
                 break;
             }
         }
-    yaz_log (LOG_DEBUG, "grs_retrieve: schemaIdentifier");
+    yaz_log(YLOG_DEBUG, "grs_retrieve: schemaIdentifier");
     if (node->u.root.absyn &&
        node->u.root.absyn->reference != VAL_NONE &&
        p->input_format == VAL_GRS1)
@@ -798,9 +1204,7 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
                sprintf(p, "%d", *ii);
                p += strlen(p);
            }
-           *(p++) = '\0';
-               
-           if ((dnew = data1_mk_tag_data_wd(dh, node, 
+           if ((dnew = data1_mk_tag_data_wd(dh, top, 
                                              "schemaIdentifier", mem)))
            {
                dnew->u.data.what = DATA1I_oid;
@@ -811,8 +1215,9 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
        }
     }
 
-    logf (LOG_DEBUG, "grs_retrieve: element spec");
-    if (p->comp && (res = process_comp(p->dh, node, p->comp)) > 0)
+    yaz_log(YLOG_DEBUG, "grs_retrieve: element spec");
+    if (p->comp && (res = process_comp(p->dh, node, p->comp, &p->addinfo,
+                                      p->odr)) > 0)
     {
        p->diagnostic = res;
        if (onode)
@@ -824,15 +1229,18 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
     else if (p->comp && !res)
        selected = 1;
 
-#if 1
+#if 0
     data1_pr_tree (p->dh, node, stdout);
 #endif
-    logf (LOG_DEBUG, "grs_retrieve: transfer syntax mapping");
+    yaz_log(YLOG_DEBUG, "grs_retrieve: transfer syntax mapping");
     switch (p->output_format = (p->input_format != VAL_NONE ?
                                p->input_format : VAL_SUTRS))
     {
     case VAL_TEXT_XML:
-        add_idzebra_info (p, top, mem);
+
+#if 0
+        data1_pr_tree (p->dh, node, stdout);
+#endif
 
         if (p->encoding)
             data1_iconv (p->dh, mem, node, p->encoding, "UTF-8");
@@ -928,13 +1336,3 @@ static int grs_retrieve(void *clientData, struct recRetrieveCtrl *p)
     return 0;
 }
 
-static struct recType grs_type =
-{
-    "grs",
-    grs_init,
-    grs_destroy,
-    grs_extract,
-    grs_retrieve
-};
-
-RecType recTypeGrs = &grs_type;