data1 part of zebra

[idzebra-moved-to-github.git] / data1 / d1_tagset.c

diff --git a/data1/d1_tagset.c b/data1/d1_tagset.c
new file mode 100644 (file)
index 0000000..8b1ada6
--- /dev/null
+++ b/data1/d1_tagset.c
@@ -0,0 +1,248 @@
+/*
+ * Copyright (c) 1995-2002, Index Data.
+ * See the file LICENSE for details.
+ * Sebastian Hammer, Adam Dickmeiss
+ *
+ * $Id: d1_tagset.c,v 1.1 2002-10-22 12:53:33 adam Exp $
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <yaz/log.h>
+#include <data1.h>
+
+/*
+ * We'll probably want to add some sort of hashed index to these lookup-
+ * functions eventually.
+ */
+
+data1_datatype data1_maptype (data1_handle dh, char *t)
+{
+    static struct
+    {
+       char *tname;
+       data1_datatype type;
+    } types[] =
+    {
+       {"structured", DATA1K_structured},
+       {"string", DATA1K_string},
+       {"numeric", DATA1K_numeric},
+       {"oid", DATA1K_oid},
+       {"bool", DATA1K_bool},
+       {"generalizedtime", DATA1K_generalizedtime},
+       {"intunit", DATA1K_intunit},
+       {"int", DATA1K_int},
+       {"octetstring", DATA1K_octetstring},
+       {"null", DATA1K_null},
+       {NULL, (data1_datatype) -1}
+    };
+    int i;
+
+    for (i = 0; types[i].tname; i++)
+       if (!data1_matchstr(types[i].tname, t))
+           return types[i].type;
+    return DATA1K_unknown;
+}
+
+data1_tag *data1_gettagbynum (data1_handle dh, data1_tagset *s,
+                             int type, int value)
+{
+    data1_tag *r;
+    
+    for (; s; s = s->next)
+    {
+       /* scan local set */
+       if (type == s->type)
+           for (r = s->tags; r; r = r->next)
+               if (r->which == DATA1T_numeric && r->value.numeric == value)
+                   return r;
+       /* scan included sets */
+       if (s->children &&
+           (r = data1_gettagbynum (dh, s->children, type, value)))
+           return r;
+    }
+    return 0;
+}
+
+data1_tag *data1_gettagbyname (data1_handle dh, data1_tagset *s,
+                              const char *name)
+{
+    data1_tag *r;
+
+    for (; s; s = s->next)
+    {
+       /* scan local set */
+       for (r = s->tags; r; r = r->next)
+       {
+           data1_name *np;
+
+           for (np = r->names; np; np = np->next)
+               if (!data1_matchstr(np->name, name))
+                   return r;
+       }
+       /* scan included sets */
+       if (s->children && (r = data1_gettagbyname (dh, s->children, name)))
+           return r;
+    }
+    return 0;
+}
+
+data1_tagset *data1_empty_tagset (data1_handle dh)
+{
+    data1_tagset *res =
+       (data1_tagset *) nmem_malloc(data1_nmem_get (dh), sizeof(*res));
+    res->name = 0;
+    res->reference = VAL_NONE;
+    res->tags = 0;
+    res->type = 0;
+    res->children = 0;
+    res->next = 0;
+    return res;
+}
+
+data1_tagset *data1_read_tagset (data1_handle dh, const char *file, int type)
+{
+    NMEM mem = data1_nmem_get (dh);
+    data1_tagset *res = 0;
+    data1_tagset **childp;
+    data1_tag **tagp;
+    FILE *f;
+    int lineno = 0;
+    int argc;
+    char *argv[50], line[512];
+
+    if (!(f = data1_path_fopen(dh, file, "r")))
+    {
+       yaz_log(LOG_WARN|LOG_ERRNO, "%s", file);
+       return 0;
+    }
+    res = data1_empty_tagset (dh);
+    res->type = type;
+    childp = &res->children;
+    tagp = &res->tags;
+
+    while ((argc = readconf_line(f, &lineno, line, 512, argv, 50)))
+    {
+       char *cmd = *argv;
+       if (!strcmp(cmd, "tag"))
+       {
+           int value;
+           char *names, *type, *nm;
+           data1_tag *rr;
+           data1_name **npp;
+
+           if (argc != 4)
+           {
+               yaz_log(LOG_WARN, "%s:%d: Bad # args to tag", file, lineno);
+               continue;
+           }
+           value = atoi(argv[1]);
+           names = argv[2];
+           type = argv[3];
+
+           rr = *tagp = (data1_tag *)nmem_malloc(mem, sizeof(*rr));
+           rr->tagset = res;
+           rr->next = 0;
+           rr->which = DATA1T_numeric;
+           rr->value.numeric = value;
+           /*
+            * how to deal with local numeric tags?
+            */
+
+           if (!(rr->kind = data1_maptype(dh, type)))
+           {
+               yaz_log(LOG_WARN, "%s:%d: Unknown datatype %s",
+                    file, lineno, type);
+               fclose(f);
+               return 0;
+           }
+           
+           /* read namelist */
+           nm = names;
+           npp = &rr->names;
+           do
+           {
+               char *e;
+
+               *npp = (data1_name *)nmem_malloc(mem, sizeof(**npp));
+               if ((e = strchr(nm, '/')))
+                   *(e++) = '\0';
+               (*npp)->name = nmem_strdup(mem, nm);
+               (*npp)->next = 0;
+               npp = &(*npp)->next;
+               nm = e;
+           }
+           while (nm);
+           tagp = &rr->next;
+       }
+       else if (!strcmp(cmd, "name"))
+       {
+           if (argc != 2)
+           {
+               yaz_log(LOG_WARN, "%s:%d: Bad # args to name", file, lineno);
+               continue;
+           }
+           res->name = nmem_strdup(mem, argv[1]);
+       }
+       else if (!strcmp(cmd, "reference"))
+       {
+           char *name;
+           
+           if (argc != 2)
+           {
+               yaz_log(LOG_WARN, "%s:%d: Bad # args to reference",
+                       file, lineno);
+               continue;
+           }
+           name = argv[1];
+           if ((res->reference = oid_getvalbyname(name)) == VAL_NONE)
+           {
+               yaz_log(LOG_WARN, "%s:%d: Unknown tagset ref '%s'",
+                       file, lineno, name);
+               continue;
+           }
+       }
+       else if (!strcmp(cmd, "type"))
+       {
+           if (argc != 2)
+           {
+               yaz_log (LOG_WARN, "%s:%d: Bad # args to type", file, lineno);
+               continue;
+           }
+           if (!res->type)
+               res->type = atoi(argv[1]);
+       }
+       else if (!strcmp(cmd, "include"))
+       {
+           char *name;
+           int type = 0;
+
+           if (argc < 2)
+           {
+               yaz_log(LOG_WARN, "%s:%d: Bad # args to include",
+                       file, lineno);
+               continue;
+           }
+           name = argv[1];
+           if (argc == 3)
+               type = atoi(argv[2]);
+           *childp = data1_read_tagset (dh, name, type);
+           if (!(*childp))
+           {
+               yaz_log(LOG_WARN, "%s:%d: Inclusion failed for tagset %s",
+                       file, lineno, name);
+               continue;
+           }
+           childp = &(*childp)->next;
+       }
+       else
+       {
+           yaz_log(LOG_WARN, "%s:%d: Unknown directive '%s'",
+                   file, lineno, cmd);
+       }
+    }
+    fclose(f);
+    return res;
+}