* Sebastian Hammer, Adam Dickmeiss
*
* $Log: res.c,v $
- * Revision 1.1 1994-08-17 15:34:23 adam
+ * Revision 1.13 1995-09-04 12:34:05 adam
+ * Various cleanup. YAZ util used instead.
+ *
+ * Revision 1.12 1995/01/24 16:40:32 adam
+ * Bug fix.
+ *
+ * Revision 1.11 1994/10/05 16:54:52 adam
+ * Minor changes.
+ *
+ * Revision 1.10 1994/10/05 10:47:31 adam
+ * Small bug fix.
+ *
+ * Revision 1.9 1994/09/16 14:41:12 quinn
+ * Added log warning to res_get_def
+ *
+ * Revision 1.8 1994/09/16 14:37:12 quinn
+ * added res_get_def
+ *
+ * Revision 1.7 1994/09/06 13:01:03 quinn
+ * Removed const from declaration of res_get
+ *
+ * Revision 1.6 1994/09/01 17:45:14 adam
+ * Work on resource manager.
+ *
+ * Revision 1.5 1994/08/18 11:02:28 adam
+ * Implementation of res_write.
+ *
+ * Revision 1.4 1994/08/18 10:02:01 adam
+ * Module alexpath moved from res.c to alexpath.c. Minor changes in res-test.c
+ *
+ * Revision 1.3 1994/08/18 09:43:51 adam
+ * Development of resource manager. Only missing is res_write.
+ *
+ * Revision 1.2 1994/08/18 08:23:26 adam
+ * Res.c now use handles. xmalloc defines xstrdup.
+ *
+ * Revision 1.1 1994/08/17 15:34:23 adam
* Initial version of resource manager.
*
*/
#include <stdio.h>
#include <stdlib.h>
-#include <util.h>
-
-struct res {
- char *name;
- char *value;
- struct res *next;
-};
-
-static struct res *first = NULL, *last = NULL;
-static int res_init = 0;
-
-static FILE *fr;
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+#include <alexutil.h>
-const char *alex_path (const char *name)
+static struct res_entry *add_entry (Res r)
{
- static char path[256];
- char *alex_prefix;
-
- if (!(alex_prefix = getenv ("ALEXPREFIX")))
- alex_prefix = "./";
-
- if (*alex_prefix && alex_prefix[strlen(alex_prefix)-1] == '/')
- sprintf (path, "%s%s", alex_prefix, name);
+ struct res_entry *resp;
+
+ if (!r->first)
+ resp = r->last = r->first = xmalloc (sizeof(*resp));
else
- sprintf (path, "%s/%s", alex_prefix, name);
- return path;
+ {
+ resp = xmalloc (sizeof(*resp));
+ r->last->next = resp;
+ r->last = resp;
+ }
+ resp->next = NULL;
+ return resp;
}
-static void reread (void)
+static void reread (Res r)
{
- struct res *resp;
+ struct res_entry *resp;
char *line;
- char *alex_base;
char *val_buf;
- int val_size, val_max = 1024;
+ int val_size, val_max = 256;
char path[256];
char fr_buf[1024];
+ FILE *fr;
- res_init = 1;
+ assert (r);
+ r->init = 1;
val_buf = xmalloc (val_max);
- if (!(alex_base = getenv ("ALEXBASE")))
- alex_base = "base";
-
- strcpy (path, alex_path(alex_base));
+ strcpy (path, alex_path(r->name));
fr = fopen (path, "r");
if (!fr)
{
- log (LOG_FATAL, "cannot open %s", path);
+ logf (LOG_FATAL|LOG_ERRNO, "Cannot open %s", path);
exit (1);
}
while (1)
no++;
fr_buf[no] = '\0';
- if (!first)
- resp = last = first = xmalloc (sizeof(*resp));
- else
- {
- resp = xmalloc (sizeof(*resp));
- last->next = resp;
- last = resp;
- }
- resp->next = NULL;
+ resp = add_entry (r);
resp->name = xmalloc (no+1);
resp->value = NULL;
strcpy (resp->name, fr_buf);
if (no < 0)
continue;
fr_buf[no++] = '\0';
- if (!first)
- resp = last = first = xmalloc (sizeof(*resp));
- else
- {
- resp = xmalloc (sizeof(*resp));
- last->next = resp;
- last = resp;
- }
- resp->next = NULL;
+ resp = add_entry (r);
resp->name = xmalloc (no);
strcpy (resp->name, fr_buf);
val_buf[val_size++] = '\0';
resp->value = xmalloc (val_size);
strcpy (resp->value, val_buf);
+ logf (LOG_DEBUG, "(name=%s,value=%s)",
+ resp->name, resp->value);
break;
}
else if (fr_buf[no] == '\\' && fr_buf[no+1] == '\n')
no = 0;
}
else
- val_buf[val_size] = fr_buf[no++];
+ {
+ val_buf[val_size++] = fr_buf[no++];
+ if (val_size+1 >= val_max)
+ {
+ char *nb;
+
+ nb = xmalloc (val_max+=1024);
+ memcpy (nb, val_buf, val_size);
+ xfree (val_buf);
+ val_buf = nb;
+ }
+ }
}
}
}
fclose (fr);
}
+Res res_open (const char *name)
+{
+ Res r;
+ if (access (name, R_OK))
+ logf (LOG_LOG|LOG_ERRNO, "Cannot access `%s'", name);
+ r = xmalloc (sizeof(*r));
+ r->init = 0;
+ r->first = r->last = NULL;
+ r->name = xstrdup (name);
+ return r;
+}
-const char *res_get (const char *name)
+void res_close (Res r)
{
- if (!res_init)
- reread ();
- return NULL;
+ assert (r);
+ if (r->init)
+ {
+ struct res_entry *re, *re1;
+ for (re = r->first; re; re=re1)
+ {
+ if (re->name)
+ xfree (re->name);
+ if (re->value)
+ xfree (re->value);
+ re1 = re->next;
+ xfree (re);
+ }
+ }
+ xfree (r);
}
-const char *res_put (const char *name, const char *value)
+char *res_get (Res r, const char *name)
{
- if (!res_init)
- reread ();
+ struct res_entry *re;
+
+ assert (r);
+ if (!r->init)
+ reread (r);
+ for (re = r->first; re; re=re->next)
+ if (re->value && !strcmp (re->name, name))
+ return re->value;
return NULL;
}
-
-int res_write (void)
+
+char *res_get_def (Res r, const char *name, char *def)
{
- if (!res_init)
- reread ();
+ char *t;
+
+ if (!(t = res_get (r, name)))
+ {
+ logf (LOG_DEBUG, "CAUTION: Using default resource %s:%s", name, def);
+ return def;
+ }
+ else
+ return t;
+}
+
+void res_put (Res r, const char *name, const char *value)
+{
+ struct res_entry *re;
+ assert (r);
+ if (!r->init)
+ reread (r);
+
+ for (re = r->first; re; re=re->next)
+ if (re->value && !strcmp (re->name, name))
+ {
+ xfree (re->value);
+ re->value = xstrdup (value);
+ return;
+ }
+ re = add_entry (r);
+ re->name = xstrdup (name);
+ re->value = xstrdup (value);
+}
+
+void res_trav (Res r, const char *prefix,
+ void (*f)(const char *name, const char *value))
+{
+ struct res_entry *re;
+ int l = 0;
+
+ assert (r);
+ if (prefix)
+ l = strlen(prefix);
+ if (!r->init)
+ reread (r);
+ for (re = r->first; re; re=re->next)
+ if (re->value)
+ if (l==0 || !memcmp (re->name, prefix, l))
+ (*f)(re->name, re->value);
+}
+
+
+int res_write (Res r)
+{
+ struct res_entry *re;
+ char path[256];
+ FILE *fr;
+
+ assert (r);
+ if (!r->init)
+ reread (r);
+ strcpy (path, alex_path(r->name));
+
+ fr = fopen (path, "w");
+ if (!fr)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "Cannot create %s", path);
+ exit (1);
+ }
+
+ for (re = r->first; re; re=re->next)
+ {
+ int no = 0;
+ int lefts = strlen(re->name)+2;
+
+ if (!re->value)
+ fprintf (fr, "%s\n", re->name);
+ else
+ {
+ fprintf (fr, "%s: ", re->name);
+ while (lefts + strlen(re->value+no) > 78)
+ {
+ int i = 20;
+ int ind = no+ 78-lefts;
+ while (--i >= 0)
+ {
+ if (re->value[ind] == ' ')
+ break;
+ --ind;
+ }
+ if (i<0)
+ ind = no + 78 - lefts;
+ for (i = no; i != ind; i++)
+ putc (re->value[i], fr);
+ fprintf (fr, "\\\n");
+ no=ind;
+ lefts = 0;
+ }
+ fprintf (fr, "%s\n", re->value+no);
+ }
+ }
+ fclose (fr);
return 0;
}
projects / idzebra-moved-to-github.git / blobdiff