--- /dev/null
+/* $Id: recctrl.c,v 1.1 2006-07-03 14:27:09 adam Exp $
+ Copyright (C) 1995-2006
+ Index Data ApS
+
+This file is part of the Zebra server.
+
+Zebra is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Zebra; see the file LICENSE.zebra. If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+*/
+
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <direntz.h>
+#include <idzebra/util.h>
+#include <idzebra/recctrl.h>
+
+struct recTypeClass {
+ RecType recType;
+ struct recTypeClass *next;
+ void *module_handle;
+};
+
+struct recTypeInstance {
+ RecType recType;
+ struct recTypeInstance *next;
+ int init_flag;
+ void *clientData;
+};
+
+struct recTypes {
+ data1_handle dh;
+ struct recTypeInstance *entries;
+};
+
+static void recTypeClass_add (struct recTypeClass **rts, RecType *rt,
+ NMEM nmem, void *module_handle);
+
+
+RecTypeClass recTypeClass_create (Res res, NMEM nmem)
+{
+ struct recTypeClass *rts = 0;
+
+#ifdef IDZEBRA_STATIC_GRS_SGML
+ if (1)
+ {
+ extern RecType idzebra_filter_grs_sgml[];
+ recTypeClass_add (&rts, idzebra_filter_grs_sgml, nmem, 0);
+ }
+#endif
+
+#ifdef IDZEBRA_STATIC_TEXT
+ if (1)
+ {
+ extern RecType idzebra_filter_text[];
+ recTypeClass_add (&rts, idzebra_filter_text, nmem, 0);
+ }
+#endif
+
+#ifdef IDZEBRA_STATIC_GRS_XML
+#if HAVE_EXPAT_H
+ if (1)
+ {
+ extern RecType idzebra_filter_grs_xml[];
+ recTypeClass_add (&rts, idzebra_filter_grs_xml, nmem, 0);
+ }
+#endif
+#endif
+
+#ifdef IDZEBRA_STATIC_GRS_REGX
+ if (1)
+ {
+ extern RecType idzebra_filter_grs_regx[];
+ recTypeClass_add (&rts, idzebra_filter_grs_regx, nmem, 0);
+ }
+#endif
+
+#ifdef IDZEBRA_STATIC_GRS_MARC
+ if (1)
+ {
+ extern RecType idzebra_filter_grs_marc[];
+ recTypeClass_add (&rts, idzebra_filter_grs_marc, nmem, 0);
+ }
+#endif
+
+#ifdef IDZEBRA_STATIC_SAFARI
+ if (1)
+ {
+ extern RecType idzebra_filter_safari[];
+ recTypeClass_add (&rts, idzebra_filter_safari, nmem, 0);
+ }
+#endif
+
+#ifdef IDZEBRA_STATIC_ALVIS
+#if HAVE_XSLT
+ if (1)
+ {
+ extern RecType idzebra_filter_alvis[];
+ recTypeClass_add (&rts, idzebra_filter_alvis, nmem, 0);
+ }
+#endif
+#endif
+
+ return rts;
+}
+
+void recTypeClass_load_modules(RecTypeClass *rts, NMEM nmem,
+ const char *module_path)
+{
+#if HAVE_DLFCN_H
+ if (module_path)
+ {
+ DIR *dir = opendir(module_path);
+ yaz_log(YLOG_LOG, "searching filters in %s", module_path);
+ if (dir)
+ {
+ struct dirent *de;
+
+ while ((de = readdir(dir)))
+ {
+ size_t dlen = strlen(de->d_name);
+ if (dlen >= 5 &&
+ !memcmp(de->d_name, "mod-", 4) &&
+ !strcmp(de->d_name + dlen - 3, ".so"))
+ {
+ void *mod_p, *fl;
+ char fname[FILENAME_MAX*2+1];
+ sprintf(fname, "%.*s/%.*s",
+ FILENAME_MAX, module_path,
+ FILENAME_MAX, de->d_name);
+ mod_p = dlopen(fname, RTLD_NOW|RTLD_GLOBAL);
+ if (mod_p && (fl = dlsym(mod_p, "idzebra_filter")))
+ {
+ yaz_log(YLOG_LOG, "Loaded filter module %s", fname);
+ recTypeClass_add(rts, fl, nmem, mod_p);
+ }
+ else if (mod_p)
+ {
+ const char *err = dlerror();
+ yaz_log(YLOG_WARN, "dlsym failed %s %s",
+ fname, err ? err : "none");
+ dlclose(mod_p);
+ }
+ else
+ {
+ const char *err = dlerror();
+ yaz_log(YLOG_WARN, "dlopen failed %s %s",
+ fname, err ? err : "none");
+
+ }
+ }
+ }
+ closedir(dir);
+ }
+ }
+#endif
+}
+
+static void recTypeClass_add(struct recTypeClass **rts, RecType *rt,
+ NMEM nmem, void *module_handle)
+{
+ while (*rt)
+ {
+ struct recTypeClass *r = (struct recTypeClass *)
+ nmem_malloc (nmem, sizeof(*r));
+
+ r->next = *rts;
+ *rts = r;
+
+ yaz_log(YLOG_LOG, "Adding filter %s", (*rt)->name);
+ r->module_handle = module_handle;
+ module_handle = 0; /* so that we only store module_handle once */
+ r->recType = *rt;
+
+ rt++;
+ }
+}
+
+void recTypeClass_info(RecTypeClass rtc, void *cd,
+ void (*cb)(void *cd, const char *s))
+{
+ for (; rtc; rtc = rtc->next)
+ (*cb)(cd, rtc->recType->name);
+}
+
+void recTypeClass_destroy(RecTypeClass rtc)
+{
+ for (; rtc; rtc = rtc->next)
+ {
+#if HAVE_DLFCN_H
+ if (rtc->module_handle)
+ dlclose(rtc->module_handle);
+#endif
+ }
+}
+
+RecTypes recTypes_init(RecTypeClass rtc, data1_handle dh)
+{
+ RecTypes rts = (RecTypes) nmem_malloc(data1_nmem_get(dh), sizeof(*rts));
+
+ struct recTypeInstance **rti = &rts->entries;
+
+ rts->dh = dh;
+
+ for (; rtc; rtc = rtc->next)
+ {
+ *rti = nmem_malloc(data1_nmem_get(dh), sizeof(**rti));
+ (*rti)->recType = rtc->recType;
+ (*rti)->init_flag = 0;
+ rti = &(*rti)->next;
+ }
+ *rti = 0;
+ return rts;
+}
+
+void recTypes_destroy (RecTypes rts)
+{
+ struct recTypeInstance *rti;
+
+ for (rti = rts->entries; rti; rti = rti->next)
+ {
+ if (rti->init_flag)
+ (*(rti->recType)->destroy)(rti->clientData);
+ }
+}
+
+RecType recType_byName (RecTypes rts, Res res, const char *name,
+ void **clientDataP)
+{
+ struct recTypeInstance *rti;
+
+ for (rti = rts->entries; rti; rti = rti->next)
+ {
+ size_t slen = strlen(rti->recType->name);
+ if (!strncmp (rti->recType->name, name, slen)
+ && (name[slen] == '\0' || name[slen] == '.'))
+ {
+ if (!rti->init_flag)
+ {
+ rti->init_flag = 1;
+ rti->clientData =
+ (*(rti->recType)->init)(res, rti->recType);
+ }
+ *clientDataP = rti->clientData;
+ if (name[slen])
+ slen++; /* skip . */
+
+ if (rti->recType->config)
+ {
+ if ((*(rti->recType)->config)
+ (rti->clientData, res, name+slen) != ZEBRA_OK)
+ return 0;
+ }
+ return rti->recType;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
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