X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=data1%2Fd1_absyn.c;h=1df3e3f76c87d9ce72e40e6782eba3cc2b798c3e;hb=f7a3769dede0071696bdcc13ae2ee1efe6d52d96;hp=3dca2f7be2d13a8da8b5d105cf0e3de676d8f6de;hpb=5437b50633032595afe6f87dc0f989bc92a5aea8;p=idzebra-moved-to-github.git

diff --git a/data1/d1_absyn.c b/data1/d1_absyn.c
index 3dca2f7..1df3e3f 100644
--- a/data1/d1_absyn.c
+++ b/data1/d1_absyn.c
@@ -1,6 +1,6 @@
-/* $Id: d1_absyn.c,v 1.15 2004-11-19 10:26:53 heikki Exp $
-   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
-   Index Data Aps
+/* $Id: d1_absyn.c,v 1.24 2006-05-10 08:13:17 adam Exp $
+   Copyright (C) 1995-2005
+   Index Data ApS
 
 This file is part of the Zebra server.
 
@@ -25,8 +25,8 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include <stdlib.h>
 #include <string.h>
 
+#include <yaz/log.h>
 #include <yaz/oid.h>
-#include <yaz/ylog.h>
 #include <idzebra/data1.h>
 #include <zebra_xpath.h>
 #include <d1_absyn.h>
@@ -439,65 +439,74 @@ void fix_element_ref (data1_handle dh, data1_absyn *absyn, data1_element *e)
 
  */
 
-const char * mk_xpath_regexp (data1_handle dh, char *expr) 
+static const char * mk_xpath_regexp (data1_handle dh, const char *expr) 
 {
-    char *p = expr;
-    char *pp;
-    char *s;
+    const char *p = expr;
     int abs = 1;
-    int i;
-    int j;
-    int e=0;
-    int is_predicate = 0;
-    
-    static char *stack[32];
-    static char res[1024];
-    char *r = "";
+    int e = 0;
+    char *stack[32];
+    char *res_p, *res = 0;
+    size_t res_size = 1;
     
-    if (*p != '/') { return (""); }
+    if (*p != '/')
+	return ("");
     p++;
-    if (*p == '/') { abs=0; p++; }
-    
-    while (*p) {
-        i=0;
-        while (*p && !strchr("/",*p)) { 
-	  i++; p++; 
-	}
-        stack[e] = (char *) nmem_malloc (data1_nmem_get (dh), i+1);
+    if (*p == '/') 
+    { 
+	abs =0;
+	p++;
+    }
+    while (*p)
+    {
+	int is_predicate = 0;
+	char *s;
+	int i, j;
+        for (i = 0; *p && !strchr("/",*p); i++, p++)
+	    ;
+	res_size += (i+3); /* we'll add / between later .. */
+        stack[e] = (char *) nmem_malloc(data1_nmem_get(dh), i+1);
 	s = stack[e];
-	for (j=0; j< i; j++) {
-	  pp = p-i+j;
-	  if (*pp == '[') {
-	    is_predicate=1;
-	  }
-	  else if (*pp == ']') {
-	    is_predicate=0;
-	  }
-	  else {
-	    if (!is_predicate) {
-	      if (*pp == '*') 
-		 *s++ = '.';
-	      *s++ = *pp;
+	for (j = 0; j < i; j++)
+	{
+	    const char *pp = p-i+j;
+	    if (*pp == '[')
+		is_predicate=1;
+	    else if (*pp == ']')
+		is_predicate=0;
+	    else 
+	    {
+		if (!is_predicate) {
+		    if (*pp == '*') 
+			*s++ = '.';
+		    *s++ = *pp;
+		}
 	    }
-	  }
 	}
 	*s = 0;
         e++;
-        if (*p) {p++;}
+        if (*p)
+	    p++;
     }
-    e--;  p = &res[0]; i=0;
-    sprintf (p, "^"); p++;
-    while (e >= 0) {
-        /* !!! res size is not checked !!! */
-        sprintf (p, "%s/",stack[e]);
-        p += strlen(stack[e]) + 1;
-        e--;
+    res_p = res = nmem_malloc(data1_nmem_get(dh), res_size + 10);
+
+    if (stack[e-1][0] == '@')  /* path/@attr spec (leaf is attribute) */
+	strcpy(res_p, "/");
+    else
+	strcpy(res_p, "[^@]*/");  /* path .. (index all cdata below it) */
+    res_p = res_p + strlen(res_p);
+    while (--e >= 0) {
+	sprintf(res_p, "%s/", stack[e]);
+	res_p += strlen(stack[e]) + 1;
+    }
+    if (!abs)
+    {
+	sprintf(res_p, ".*"); 
+	res_p += 2;
     }
-    if (!abs) { sprintf (p, ".*"); p+=2; }
-    sprintf (p, "$"); p++;
-    r = nmem_strdup (data1_nmem_get (dh), res);
-    yaz_log(YLOG_DEBUG,"Got regexp: %s",r);
-    return (r);
+    sprintf (res_p, "$");
+    res_p++;
+    yaz_log(YLOG_DEBUG, "Got regexp: %s", res);
+    return res;
 }
 
 /* *ostrich*
@@ -561,12 +570,17 @@ static int parse_termlists (data1_handle dh, data1_termlist ***tpp,
 	    nmem_malloc(data1_nmem_get(dh), sizeof(**tp));
 	(*tp)->next = 0;
         
+#if NATTR
+	(*tp)->index_name = nmem_strdup(data1_nmem_get(dh), element_name);
+	if (*attname == '!' && xpelement)
+	    (*tp)->index_name = 0;
+#else
 	if (!xpelement) {
             if (*attname == '!')
                 strcpy(attname, element_name);
 	}
-	if (!((*tp)->att = data1_getattbyname(dh, res->attset,
-                                              attname))) {
+	if (!((*tp)->att = data1_getattbyname(dh, res->attset, attname))) 
+	{
             if ((!xpelement) || (*attname != '!')) {
                 yaz_log(YLOG_WARN,
                         "%s:%d: Couldn't find att '%s' in attset",
@@ -576,7 +590,7 @@ static int parse_termlists (data1_handle dh, data1_termlist ***tpp,
                 (*tp)->att = 0;
             }
 	}
-        
+#endif   
 	if (r == 2 && (source = strchr(structure, ':')))
 	    *source++ = '\0';   /* cut off structure .. */
 	else
@@ -596,6 +610,33 @@ static int parse_termlists (data1_handle dh, data1_termlist ***tpp,
     return 0;
 }
 
+/* quinn
+ * Converts a 'melm' field[$subfield] pattern to a simple xpath
+ */
+static int melm2xpath(char *melm, char *buf)
+{
+    char *dollar;
+    char *field = melm;
+    char *subfield;
+    char *fieldtype;
+    if ((dollar = strchr(melm, '$'))) {
+	*dollar = '\0';
+	subfield = ++dollar;
+    } else
+	subfield = "";
+    if (field[0] == '0' && field[1] == '0')
+	fieldtype = "controlfield";
+    else
+	fieldtype = "datafield";
+    sprintf(buf, "/*/%s[@tag=\"%s\"]", fieldtype, field);
+    if (*subfield) 
+	sprintf(buf + strlen(buf), "/subfield[@code=\"%s\"]", subfield);
+    else if (field[0] != '0' || field[1] != '0')
+	strcat(buf, "/subfield");
+    yaz_log(YLOG_DEBUG, "Created xpath: '%s'", buf);
+    return 0;
+}
+
 const char *data1_systag_lookup(data1_absyn *absyn, const char *tag,
                                 const char *default_value)
 {
@@ -843,20 +884,28 @@ data1_absyn *data1_read_absyn (data1_handle dh, const char *file,
 	   pop, 2003-01-17
 	*/
 
-	else if (!strcmp(cmd, "xelm")) {
+	else if (!strcmp(cmd, "xelm") || !strcmp(cmd, "melm")) {
 
 	    int i;
 	    char *p, *xpath_expr, *termlists;
 	    const char *regexp;
 	    struct DFA *dfa = dfa = dfa_init();
 	    data1_termlist **tp;
+	    char melm_xpath[128];
             
 	    if (argc < 3)
 	    {
 		yaz_log(YLOG_WARN, "%s:%d: Bad # of args to xelm", file, lineno);
 		continue;
 	    }
-	    xpath_expr = argv[1];
+
+	    if (!strcmp(cmd, "melm")) {
+		if (melm2xpath(argv[1], melm_xpath) < 0)
+		    continue;
+		xpath_expr = melm_xpath;
+	    } else {
+		xpath_expr = argv[1];
+	    }
 	    termlists = argv[2];
 	    regexp = mk_xpath_regexp(dh, xpath_expr);
 	    i = dfa_parse (dfa, &regexp);
@@ -1002,6 +1051,9 @@ data1_absyn *data1_read_absyn (data1_handle dh, const char *file,
 	}
 	else if (!strcmp(cmd, "attset"))
 	{
+#if NATTR
+	    yaz_log(YLOG_WARN, "%s:%d: attset obsolete", file, lineno);
+#else
 	    char *name;
 	    data1_attset *attset;
 	    
@@ -1023,6 +1075,7 @@ data1_absyn *data1_read_absyn (data1_handle dh, const char *file,
 	    (*attset_childp)->child = attset;
 	    (*attset_childp)->next = 0;
 	    attset_childp = &(*attset_childp)->next;
+#endif
 	}
 	else if (!strcmp(cmd, "tagset"))
 	{
@@ -1174,3 +1227,11 @@ data1_absyn *data1_read_absyn (data1_handle dh, const char *file,
     yaz_log(YLOG_DEBUG, "%s: data1_read_absyn end", file);
     return res;
 }
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+