Use SRU diagnostic defines rather than numbers.
[yaz-moved-to-github.git] / src / cqltransform.c
index 3f54faa..ebbed7a 100644 (file)
@@ -1,11 +1,7 @@
-/* $Id: cqltransform.c,v 1.29 2007-10-31 21:58:07 adam Exp $
-   Copyright (C) 1995-2007, Index Data ApS
-   Index Data Aps
-
-This file is part of the YAZ toolkit.
-
-See the file LICENSE.
-*/
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2008 Index Data
+ * See the file LICENSE for details.
+ */
 
 /**
  * \file cqltransform.c
@@ -185,6 +181,18 @@ int cql_pr_attr_uri(cql_transform_t ct, const char *category,
     {
         if (!res)
             res = cql_lookup_property(ct, category, prefix, eval);
+        /* we have some aliases for some relations unfortunately.. */
+        if (!res && !prefix && !strcmp(category, "relation"))
+        {
+            if (!strcmp(val, "=="))
+                res = cql_lookup_property(ct, category, prefix, "exact");
+            if (!strcmp(val, "="))
+                res = cql_lookup_property(ct, category, prefix, "eq");
+            if (!strcmp(val, "<="))
+                res = cql_lookup_property(ct, category, prefix, "le");
+            if (!strcmp(val, ">="))
+                res = cql_lookup_property(ct, category, prefix, "ge");
+        }
         if (!res)
             res = cql_lookup_property(ct, category, prefix, "*");
     }
@@ -289,7 +297,7 @@ static int cql_pr_prox(cql_transform_t ct, struct cql_node *mods,
             } else if (!strcmp(relation, "<>")) {
                 proxrel = 6;
             } else {
-                ct->error = 40; /* Unsupported proximity relation */
+                ct->error = YAZ_SRW_UNSUPP_PROX_RELATION;
                 ct->addinfo = xstrdup(relation);
                 return 0;
             }
@@ -307,12 +315,12 @@ static int cql_pr_prox(cql_transform_t ct, struct cql_node *mods,
             } else if (!strcmp(term, "element")) {
                 unit = 8;
             } else {
-                ct->error = 42; /* Unsupported proximity unit */
+                ct->error = YAZ_SRW_UNSUPP_PROX_UNIT;
                 ct->addinfo = xstrdup(term);
                 return 0;
             }
         } else {
-            ct->error = 46;     /* Unsupported boolean modifier */
+            ct->error = YAZ_SRW_UNSUPP_BOOLEAN_MODIFIER;
             ct->addinfo = xstrdup(name);
             return 0;
         }
@@ -382,27 +390,27 @@ void emit_term(cql_transform_t ct,
         if (length > 1 && term[0] == '^' && term[length-1] == '^')
         {
             cql_pr_attr(ct, "position", "firstAndLast", 0,
-                        pr, client_data, 32);
+                        pr, client_data, YAZ_SRW_ANCHORING_CHAR_IN_UNSUPP_POSITION);
             term++;
             length -= 2;
         }
         else if (term[0] == '^')
         {
             cql_pr_attr(ct, "position", "first", 0,
-                        pr, client_data, 32);
+                        pr, client_data, YAZ_SRW_ANCHORING_CHAR_IN_UNSUPP_POSITION);
             term++;
             length--;
         }
         else if (term[length-1] == '^')
         {
             cql_pr_attr(ct, "position", "last", 0,
-                        pr, client_data, 32);
+                        pr, client_data, YAZ_SRW_ANCHORING_CHAR_IN_UNSUPP_POSITION);
             length--;
         }
         else
         {
             cql_pr_attr(ct, "position", "any", 0,
-                        pr, client_data, 32);
+                        pr, client_data, YAZ_SRW_ANCHORING_CHAR_IN_UNSUPP_POSITION);
         }
     }
 
@@ -452,7 +460,7 @@ void emit_term(cql_transform_t ct,
              */
             int i;
             cql_pr_attr(ct, "truncation", "z3958", 0,
-                        pr, client_data, 28);
+                        pr, client_data, YAZ_SRW_MASKING_CHAR_UNSUPP);
             z3958_mem = (char *) xmalloc(length+1);
             for (i = 0; i < length; i++)
             {
@@ -477,7 +485,7 @@ void emit_term(cql_transform_t ct,
     if (ns) {
         cql_pr_attr_uri(ct, "index", ns,
                         cn->u.st.index, "serverChoice",
-                        pr, client_data, 16);
+                        pr, client_data, YAZ_SRW_UNSUPP_INDEX);
     }
     if (cn->u.st.modifiers)
     {
@@ -485,7 +493,7 @@ void emit_term(cql_transform_t ct,
         for (; mod; mod = mod->u.st.modifiers)
         {
             cql_pr_attr(ct, "relationModifier", mod->u.st.index, 0,
-                        pr, client_data, 20);
+                        pr, client_data, YAZ_SRW_UNSUPP_RELATION_MODIFIER);
         }
     }
 
@@ -493,25 +501,46 @@ void emit_term(cql_transform_t ct,
     for (i = 0; i<length; i++)
     {
         /* pr(int) each character */
-        char buf[3];
-        const char *cp;
+        /* we do not need to deal with \-sequences because the
+           CQL and PQF terms have same \-format, bug #1988 */
+        char buf[2];
 
-        buf[1] = term[i];
-        buf[2] = 0;
-        /* do we have to escape this char? */
-        if (buf[1] == '"')
-        {
-            buf[0] = '\\';
-            cp = buf;
-        }
-        else
-            cp = buf+1;
-        (*pr)(cp, client_data);
+        buf[0] = term[i];
+        buf[1] = '\0';
+        (*pr)(buf, client_data);
     }
     (*pr)("\" ", client_data);
     xfree(z3958_mem);
 }
 
+void emit_terms(cql_transform_t ct,
+                struct cql_node *cn,
+                void (*pr)(const char *buf, void *client_data),
+                void *client_data,
+                const char *op)
+{
+    struct cql_node *ne = cn->u.st.extra_terms;
+    if (ne)
+    {
+        (*pr)("@", client_data);
+        (*pr)(op, client_data);
+        (*pr)(" ", client_data);
+    }
+    emit_term(ct, cn, cn->u.st.term, strlen(cn->u.st.term),
+              pr, client_data);
+    for (; ne; ne = ne->u.st.extra_terms)
+    {
+        if (ne->u.st.extra_terms)
+        {
+            (*pr)("@", client_data);
+            (*pr)(op, client_data);
+            (*pr)(" ", client_data);
+        }            
+        emit_term(ct, cn, ne->u.st.term, strlen(ne->u.st.term),
+                  pr, client_data);
+    }
+}
+
 void emit_wordlist(cql_transform_t ct,
                    struct cql_node *cn,
                    void (*pr)(const char *buf, void *client_data),
@@ -574,25 +603,15 @@ void cql_transform_r(cql_transform_t ct,
         {
             if (!ct->error)
             {
-                ct->error = 15;
+                ct->error = YAZ_SRW_UNSUPP_CONTEXT_SET;
                 ct->addinfo = 0;
             }
         }
         cql_pr_attr(ct, "always", 0, 0, pr, client_data, 0);
-        if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, "="))
-            cql_pr_attr(ct, "relation", "eq", "scr",
-                        pr, client_data, 19);
-        else if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, "<="))
-            cql_pr_attr(ct, "relation", "le", "scr",
-                        pr, client_data, 19);
-        else if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, ">="))
-            cql_pr_attr(ct, "relation", "ge", "scr",
-                        pr, client_data, 19);
-        else
-            cql_pr_attr(ct, "relation", cn->u.st.relation, "eq",
-                        pr, client_data, 19);
+        cql_pr_attr(ct, "relation", cn->u.st.relation, 0, pr, client_data,
+                    YAZ_SRW_UNSUPP_RELATION);
         cql_pr_attr(ct, "structure", cn->u.st.relation, 0,
-                    pr, client_data, 24);
+                    pr, client_data, YAZ_SRW_UNSUPP_COMBI_OF_RELATION_AND_TERM);
         if (cn->u.st.relation && !cql_strcmp(cn->u.st.relation, "all"))
         {
             emit_wordlist(ct, cn, pr, client_data, "and");
@@ -603,8 +622,7 @@ void cql_transform_r(cql_transform_t ct,
         }
         else
         {
-            emit_term(ct, cn, cn->u.st.term, strlen(cn->u.st.term),
-                      pr, client_data);
+            emit_terms(ct, cn, pr, client_data, "and");
         }
         break;
     case CQL_NODE_BOOL:
@@ -617,7 +635,7 @@ void cql_transform_r(cql_transform_t ct,
                 return;
         } else if (mods) {
             /* Boolean modifiers other than on proximity not supported */
-            ct->error = 46; /* SRW diag: "Unsupported boolean modifier" */
+            ct->error = YAZ_SRW_UNSUPP_BOOLEAN_MODIFIER;
             ct->addinfo = xstrdup(mods->u.st.index);
             return;
         }