Added Retrieval (data management) functions en masse.

[yaz-moved-to-github.git] / retrieval / d1_tagset.c

diff --git a/retrieval/d1_tagset.c b/retrieval/d1_tagset.c
new file mode 100644 (file)
index 0000000..794315e
--- /dev/null
+++ b/retrieval/d1_tagset.c
@@ -0,0 +1,252 @@
+/*
+ * Copyright (c) 1995, Index Data.
+ * See the file LICENSE for details.
+ * Sebastian Hammer, Adam Dickmeiss
+ *
+ * $Log: d1_tagset.c,v $
+ * Revision 1.1  1995-11-01 11:56:09  quinn
+ * Added Retrieval (data management) functions en masse.
+ *
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+#include <xmalloc.h>
+#include <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(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},
+       {0, -1}
+    };
+    int i;
+
+    for (i = 0; types[i].tname; i++)
+       if (!data1_matchstr(types[i].tname, t))
+           return types[i].type;
+    return 0;
+}
+
+data1_tag *data1_gettagbynum(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(s->children, type, value)))
+           return r;
+    }
+    return 0;
+}
+
+data1_tag *data1_gettagbyname(data1_tagset *s, 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(s->children, name)))
+           return r;
+    }
+    return 0;
+}
+
+data1_tagset *data1_read_tagset(char *file)
+{
+    char line[512], *r, cmd[512], args[512];
+    data1_tagset *res = 0, **childp;
+    data1_tag **tagp;
+    FILE *f;
+
+    if (!(f = fopen(file, "r")))
+    {
+       logf(LOG_WARN|LOG_ERRNO, "%s", file);
+       return 0;
+    }
+
+    if (!(res = xmalloc(sizeof(*res))))
+       abort();
+    res->name = 0;
+    res->type = 0;
+    res->tags = 0;
+    res->children = 0;
+    res->next = 0;
+    childp = &res->children;
+    tagp = &res->tags;
+
+    for (;;)
+    {
+       while ((r = fgets(line, 512, f)))
+       {
+           while (*r && isspace(*r))
+               r++;
+           if (*r && *r != '#')
+               break;
+       }
+       if (!r)
+       {
+           fclose(f);
+           return res;
+       }
+       if (sscanf(r, "%s %[^\n]", cmd, args) < 2)
+           *args = '\0';
+       if (!strcmp(cmd, "tag"))
+       {
+           int value;
+           char names[512], type[512], *nm;
+           data1_tag *rr;
+           data1_name **npp;
+
+           if (sscanf(args, "%d %s %s", &value, names, type) < 3)
+           {
+               logf(LOG_WARN, "Bad number of parms in '%s' in %s",
+                   args, file);
+               fclose(f);
+               return 0;
+           }
+           if (!(rr = *tagp = xmalloc(sizeof(*rr))))
+               abort();
+
+           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(type)))
+           {
+               logf(LOG_WARN, "Unknown datatype %s in %s", type, file);
+               fclose(f);
+               return 0;
+           }
+           
+           /* read namelist */
+           nm = names;
+           npp = &rr->names;
+           do
+           {
+               char *e;
+
+               if (!(*npp = xmalloc(sizeof(**npp))))
+                   abort();
+               if ((e = strchr(nm, '/')))
+                   *(e++) = '\0';
+               if (!((*npp)->name = xmalloc(strlen(nm)+1)))
+                   abort();
+               strcpy((*npp)->name, nm);
+               (*npp)->next = 0;
+               npp = &(*npp)->next;
+               nm = e;
+           }
+           while (nm);
+           tagp = &rr->next;
+       }
+       else if (!strcmp(cmd, "name"))
+       {
+           char name[512];
+
+           if (!sscanf(args, "%s", name))
+           {
+               logf(LOG_WARN, "%s malformed name directive in %s", file);
+               fclose(f);
+               return 0;
+           }
+           if (!(res->name = xmalloc(strlen(args)+1)))
+               abort();
+           strcpy(res->name, name);
+       }
+       else if (!strcmp(cmd, "reference"))
+       {
+           char name[512];
+
+           if (!sscanf(args, "%s", name))
+           {
+               logf(LOG_WARN, "%s malformed reference directive in %s", file);
+               fclose(f);
+               return 0;
+           }
+           if ((res->reference = oid_getvalbyname(name)) == VAL_NONE)
+           {
+               logf(LOG_WARN, "Unknown tagset ref '%s' in %s", name, file);
+               fclose(f);
+               return 0;
+           }
+       }
+       else if (!strcmp(cmd, "type"))
+       {
+           if (!sscanf(args, "%d", &res->type))
+           {
+               logf(LOG_WARN, "%s malformed type directive in %s", file);
+               fclose(f);
+               return 0;
+           }
+       }
+       else if (!strcmp(cmd, "include"))
+       {
+           char name[512];
+
+           if (!sscanf(args, "%s", name))
+           {
+               logf(LOG_WARN, "%s malformed reference directive in %s", file);
+               fclose(f);
+               return 0;
+           }
+           if (!(*childp = data1_read_tagset(name)))
+           {
+               logf(LOG_WARN, "Inclusion failed in %s", file);
+               fclose(f);
+               return 0;
+           }
+           childp = &(*childp)->next;
+       }
+       else
+       {
+           logf(LOG_WARN, "Unknown directive '%s' in %s", cmd, file);
+           fclose(f);
+           return 0;
+       }
+    }
+}