sockets: fix for whether poll is available

[yaz-moved-to-github.git] / src / cql2ccl.c

diff --git a/src/cql2ccl.c b/src/cql2ccl.c
index 90ee5d6..0705ed5 100644 (file)
--- a/src/cql2ccl.c
+++ b/src/cql2ccl.c
@@ -3,7 +3,7 @@
  * See the file LICENSE for details.
  */
 /**
- * \file xcqlutil.c
+ * \file cql2ccl.c
  * \brief Implements CQL to XCQL conversion.
  */
 #if HAVE_CONFIG_H
@@ -21,14 +21,24 @@ static int cql_to_ccl_r(struct cql_node *cn,
                         void *client_data);
 
 static void pr_term(struct cql_node *cn,
-                void (*pr)(const char *buf, void *client_data),
-                void *client_data)
+                    void (*pr)(const char *buf, void *client_data),
+                    void *client_data)
 {
     while (cn)
     {
-        pr("\"", client_data);
-        pr(cn->u.st.term, client_data);
-        pr("\"", client_data);
+        const char *cp;
+        cp = cn->u.st.term;
+        while (*cp)
+        {
+            char x[2];
+            if (*cp == '*')
+                x[0] = '?';
+            else
+                x[0] = *cp;
+            x[1] = 0;
+            pr(x, client_data);
+            cp++;
+        }
         if (cn->u.st.extra_terms)
             pr(" ", client_data);
         cn = cn->u.st.extra_terms;
@@ -98,7 +108,10 @@ static int node(struct cql_node *cn,
             while (*cp && *cp != ' ')
             {
                 char x[2];
-                x[0] = *cp;
+                if (*cp == '*')
+                    x[0] = '?';
+                else
+                    x[0] = *cp;
                 x[1] = '\0';
                 pr(x, client_data);
                 cp++;
@@ -111,7 +124,6 @@ static int node(struct cql_node *cn,
             pr(split_op, client_data);
             pr(" ", client_data);            
         }
-        return -1;
     }
     return 0;
 }
@@ -121,6 +133,7 @@ static int bool(struct cql_node *cn,
                 void (*pr)(const char *buf, void *client_data),
                 void *client_data)
 {
+    char *value = cn->u.boolean.value;
     int r;
 
     pr("(", client_data);
@@ -129,7 +142,54 @@ static int bool(struct cql_node *cn,
         return r;
     
     pr(" ", client_data);
-    pr(cn->u.boolean.value, client_data);
+
+    if (strcmp(value, "prox"))
+    {   /* not proximity. assuming boolean */
+        pr(value, client_data);
+    }
+    else
+    {
+        struct cql_node *n = cn->u.boolean.modifiers;
+        int ordered = 0;
+        int distance = 1;
+        for (; n ; n = n->u.st.modifiers)
+            if (n->which == CQL_NODE_ST)
+            {
+                if (!strcmp(n->u.st.index, "unit"))
+                {
+                    if (!strcmp(n->u.st.term, "word"))
+                        ;
+                    else
+                        return -1;
+                }
+                else if (!strcmp(n->u.st.index, "distance"))
+                {
+                    if (!strcmp(n->u.st.relation, "<="))
+                        distance = atoi(n->u.st.term);
+                    else if (!strcmp(n->u.st.relation, "<"))
+                        distance = atoi(n->u.st.term) - 1;
+                    else
+                        return -1;
+                }
+                else if (!strcmp(n->u.st.index, "unordered"))
+                {
+                    ordered = 0;
+                }
+                else if (!strcmp(n->u.st.index, "ordered"))
+                {
+                    ordered = 1;
+                }
+                else
+                    return -1;
+            }
+        pr(ordered ? "!" : "%", client_data);
+        if (distance != 1)
+        {
+            char x[40];
+            sprintf(x, "%d", distance);
+            pr(x, client_data);
+        }
+    }
     pr(" ", client_data);
 
     r = cql_to_ccl_r(cn->u.boolean.right, pr, client_data);
@@ -171,13 +231,16 @@ void cql_to_ccl_stdio(struct cql_node *cn, FILE *f)
 int cql_to_ccl_buf(struct cql_node *cn, char *out, int max)
 {
     struct cql_buf_write_info info;
+    int r;
     info.off = 0;
     info.max = max;
     info.buf = out;
-    cql_to_ccl(cn, cql_buf_write_handler, &info);
+    r = cql_to_ccl(cn, cql_buf_write_handler, &info);
     if (info.off >= 0)
         info.buf[info.off] = '\0';
-    return info.off;
+    else
+        return -2; /* buffer overflow */
+    return r;
 }
 
 /*