Refactor ZOOM record render code and fix #2892.

Refactor code for ZOOM_record_get. The "xml" render for OPAC records
now renders the full OPAC. Previously only the MARCXML bibliographic part
was rendered (the bibliographic record). Pazpar2 relies on this
functionality and this should fix bug #2892.

diff --git a/src/zoom-c.c b/src/zoom-c.c
index ebedbde..0864f31 100644 (file)
--- a/src/zoom-c.c
+++ b/src/zoom-c.c
@@ -1836,15 +1836,12 @@ ZOOM_API(void)
     xfree(rec);
 }
 
-static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
-                                     int *len,
-                                     const char *buf, int sz,
-                                     const char *record_charset)
+
+static yaz_iconv_t iconv_create_charset(const char *record_charset)
 {
     char to[40];
     char from[40];
     yaz_iconv_t cd = 0;
-    yaz_marc_t mt = yaz_marc_create();
 
     *from = '\0';
     strcpy(to, "UTF-8");
@@ -1866,63 +1863,71 @@ static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
             strncpy(from, record_charset, clen);
         from[clen] = '\0';
     }
-
     if (*from && *to)
-    {
         cd = yaz_iconv_open(to, from);
-        yaz_marc_iconv(mt, cd);
-    }
+    return cd;
+}
 
+static const char *return_marc_record(ZOOM_record rec, int marc_type,
+                                      int *len,
+                                      const char *buf, int sz,
+                                      const char *record_charset)
+{
+    yaz_iconv_t cd = iconv_create_charset(record_charset);
+    yaz_marc_t mt = yaz_marc_create();
+    const char *ret_string = 0;
+
+    if (cd)
+        yaz_marc_iconv(mt, cd);
     yaz_marc_xml(mt, marc_type);
     if (!rec->wrbuf_marc)
         rec->wrbuf_marc = wrbuf_alloc();
     wrbuf_rewind(rec->wrbuf_marc);
     if (yaz_marc_decode_wrbuf(mt, buf, sz, rec->wrbuf_marc) > 0)
     {
-        yaz_marc_destroy(mt);
-        if (cd)
-            yaz_iconv_close(cd);
         if (len)
             *len = wrbuf_len(rec->wrbuf_marc);
-        return wrbuf_cstr(rec->wrbuf_marc);
+        ret_string = wrbuf_cstr(rec->wrbuf_marc);
     }
     yaz_marc_destroy(mt);
     if (cd)
         yaz_iconv_close(cd);
-    return 0;
+    return ret_string;
 }
 
-static const char *record_iconv_return(ZOOM_record rec, int *len,
-                                       const char *buf, int sz,
-                                       const char *record_charset)
+static const char *return_opac_record(ZOOM_record rec, int marc_type,
+                                      int *len,
+                                      Z_OPACRecord *opac_rec,
+                                      const char *record_charset)
 {
-    char to[40];
-    char from[40];
-    yaz_iconv_t cd = 0;
+    yaz_iconv_t cd = iconv_create_charset(record_charset);
+    yaz_marc_t mt = yaz_marc_create();
 
-    *from = '\0';
-    strcpy(to, "UTF-8");
+    if (cd)
+        yaz_marc_iconv(mt, cd);
+    yaz_marc_xml(mt, marc_type);
 
-    if (record_charset && *record_charset)
-    {
-        /* Use "from,to" or just "from" */
-        const char *cp = strchr(record_charset, ',');
-        int clen = strlen(record_charset);
-        if (cp && cp[1])
-        {
-            strncpy( to, cp+1, sizeof(to)-1);
-            to[sizeof(to)-1] = '\0';
-            clen = cp - record_charset;
-        }
-        if (clen > sizeof(from)-1)
-            clen = sizeof(from)-1;
-        
-        if (clen)
-            strncpy(from, record_charset, clen);
-        from[clen] = '\0';
-    }
+    if (!rec->wrbuf_marc)
+        rec->wrbuf_marc = wrbuf_alloc();
+    wrbuf_rewind(rec->wrbuf_marc);
+
+    yaz_opac_decode_wrbuf(mt, opac_rec, rec->wrbuf_marc);
+    yaz_marc_destroy(mt);
+
+    if (cd)
+        yaz_iconv_close(cd);
+    if (len)
+        *len = wrbuf_len(rec->wrbuf_marc);
+    return wrbuf_cstr(rec->wrbuf_marc);
+}
 
-    if (*from && *to && (cd = yaz_iconv_open(to, from)))
+static const char *return_string_record(ZOOM_record rec, int *len,
+                                        const char *buf, int sz,
+                                        const char *record_charset)
+{
+    yaz_iconv_t cd = iconv_create_charset(record_charset);
+
+    if (cd)
     {
         if (!rec->wrbuf_iconv)
             rec->wrbuf_iconv = wrbuf_alloc();
@@ -1941,6 +1946,55 @@ static const char *record_iconv_return(ZOOM_record rec, int *len,
     return buf;
 }
 
+static const char *return_record(ZOOM_record rec, int *len,
+                                 Z_NamePlusRecord *npr,
+                                 int marctype, const char *charset)
+{
+    Z_External *r = (Z_External *) npr->u.databaseRecord;
+    const Odr_oid *oid = r->direct_reference;
+    
+    /* render bibliographic record .. */
+    if (r->which == Z_External_OPAC)
+    {
+        return return_opac_record(rec, marctype, len,
+                                  r->u.opac, charset);
+    }
+    if (r->which == Z_External_sutrs)
+        return return_string_record(rec, len,
+                                    (char*) r->u.sutrs->buf,
+                                    r->u.sutrs->len,
+                                    charset);
+    else if (r->which == Z_External_octet)
+    {
+        if (yaz_oid_is_iso2709(oid))
+        {
+            const char *ret_buf = return_marc_record(
+                rec, marctype, len,
+                (const char *) r->u.octet_aligned->buf,
+                r->u.octet_aligned->len,
+                charset);
+            if (ret_buf)
+                return ret_buf;
+        }
+        return return_string_record(rec, len,
+                                    (const char *) r->u.octet_aligned->buf,
+                                    r->u.octet_aligned->len,
+                                    charset);
+    }
+    else if (r->which == Z_External_grs1)
+    {
+        if (!rec->wrbuf_marc)
+            rec->wrbuf_marc = wrbuf_alloc();
+        wrbuf_rewind(rec->wrbuf_marc);
+        yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
+        return return_string_record(rec, len,
+                                    wrbuf_buf(rec->wrbuf_marc),
+                                    wrbuf_len(rec->wrbuf_marc),
+                                    charset);
+    }
+    return 0;
+}
+    
 
 ZOOM_API(int)
     ZOOM_record_error(ZOOM_record rec, const char **cp,
@@ -2090,129 +2144,15 @@ ZOOM_API(const char *)
     /* from now on - we have a database record .. */
     if (!strcmp(type, "render"))
     {
-        Z_External *r = (Z_External *) npr->u.databaseRecord;
-        const Odr_oid *oid = r->direct_reference;
-
-        /* render bibliographic record .. */
-        if (r->which == Z_External_OPAC)
-        {
-            r = r->u.opac->bibliographicRecord;
-            if (!r)
-                return 0;
-            oid = r->direct_reference;
-        }
-        if (r->which == Z_External_sutrs)
-            return record_iconv_return(rec, len,
-                                       (char*) r->u.sutrs->buf,
-                                       r->u.sutrs->len,
-                                       charset);
-        else if (r->which == Z_External_octet)
-        {
-            if (yaz_oid_is_iso2709(oid))
-            {
-                const char *ret_buf = marc_iconv_return(
-                    rec, YAZ_MARC_LINE, len,
-                    (const char *) r->u.octet_aligned->buf,
-                    r->u.octet_aligned->len,
-                    charset);
-                if (ret_buf)
-                    return ret_buf;
-            }
-            return record_iconv_return(rec, len,
-                                       (const char *) r->u.octet_aligned->buf,
-                                       r->u.octet_aligned->len,
-                                       charset);
-        }
-        else if (r->which == Z_External_grs1)
-        {
-            if (!rec->wrbuf_marc)
-                rec->wrbuf_marc = wrbuf_alloc();
-            wrbuf_rewind(rec->wrbuf_marc);
-            yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
-            return record_iconv_return(rec, len,
-                                       wrbuf_buf(rec->wrbuf_marc),
-                                       wrbuf_len(rec->wrbuf_marc),
-                                       charset);
-        }
-        return 0;
+        return return_record(rec, len, npr, YAZ_MARC_LINE, charset);
     }
     else if (!strcmp(type, "xml"))
     {
-        Z_External *r = (Z_External *) npr->u.databaseRecord;
-        const Odr_oid *oid = r->direct_reference;
-
-        /* render bibliographic record .. */
-        if (r->which == Z_External_OPAC)
-        {
-            r = r->u.opac->bibliographicRecord;
-            if (!r)
-                return 0;
-            oid = r->direct_reference;
-        }
-        
-        if (r->which == Z_External_sutrs)
-            return record_iconv_return(rec, len,
-                                       (const char *) r->u.sutrs->buf,
-                                       r->u.sutrs->len,
-                                       charset);
-        else if (r->which == Z_External_octet)
-        {
-            if (yaz_oid_is_iso2709(oid))
-            {
-                const char *ret_buf = marc_iconv_return(
-                    rec, YAZ_MARC_MARCXML, len,
-                    (const char *) r->u.octet_aligned->buf,
-                    r->u.octet_aligned->len,
-                    charset);
-                if (ret_buf)
-                    return ret_buf;
-            }
-            return record_iconv_return(rec, len,
-                                       (const char *) r->u.octet_aligned->buf,
-                                       r->u.octet_aligned->len,
-                                       charset);
-        }
-        else if (r->which == Z_External_grs1)
-        {
-            if (len) *len = 5;
-            return "GRS-1";
-        }
-        return 0;
+        return return_record(rec, len, npr, YAZ_MARC_MARCXML, charset);
     }
     else if (!strcmp(type, "raw"))
     {
-        Z_External *r = (Z_External *) npr->u.databaseRecord;
-        const Odr_oid *oid = r->direct_reference;
-        
-        if (r->which == Z_External_sutrs)
-        {
-            return record_iconv_return(rec, len,
-                                       (const char *) r->u.sutrs->buf,
-                                       r->u.sutrs->len,
-                                       charset);
-        }
-        else if (r->which == Z_External_octet)
-        {
-            if (yaz_oid_is_iso2709(oid) && *charset)
-            {
-                const char *ret_buf = marc_iconv_return(
-                    rec, YAZ_MARC_ISO2709, len,
-                    (const char *) r->u.octet_aligned->buf,
-                    r->u.octet_aligned->len,
-                    charset);
-                return ret_buf;
-            }
-            return record_iconv_return(rec, len,
-                                       (const char *) r->u.octet_aligned->buf,
-                                       r->u.octet_aligned->len,
-                                       charset);
-        }
-        else /* grs-1, explain, OPAC, ... */
-        {
-            if (len) *len = -1;
-            return (const char *) npr->u.databaseRecord;
-        }
-        return 0;
+        return return_record(rec, len, npr, YAZ_MARC_ISO2709, charset);
     }
     else if (!strcmp (type, "ext"))
     {
@@ -2220,20 +2160,8 @@ ZOOM_API(const char *)
         return (const char *) npr->u.databaseRecord;
     }
     else if (!strcmp (type, "opac"))
-             
     {
-        Z_External *r = (Z_External *) npr->u.databaseRecord;
-        if (r->which == Z_External_OPAC)
-        {
-            if (!rec->wrbuf_opac)
-                rec->wrbuf_opac = wrbuf_alloc();
-            wrbuf_rewind(rec->wrbuf_opac);
-            yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
-            return record_iconv_return(rec, len,
-                                       wrbuf_buf(rec->wrbuf_opac),
-                                       wrbuf_len(rec->wrbuf_opac),
-                                       charset);
-        }
+        return return_record(rec, len, npr, YAZ_MARC_MARCXML, charset);
     }
     return 0;
 }