history purge

tpws/strpool.c

@@ -0,0 +1,76 @@
+#define _GNU_SOURCE
+#include "strpool.h"
+#include <string.h>
+#include <stdlib.h>
+
+#undef uthash_nonfatal_oom
+#define uthash_nonfatal_oom(elt) ut_oom_recover(elt)
+
+static bool oom=false;
+static void ut_oom_recover(strpool *elem)
+{
+ oom=true;
+}
+
+// for zero terminated strings
+bool StrPoolAddStr(strpool **pp,const char *s)
+{
+ strpool *elem;
+ if (!(elem = (strpool*)malloc(sizeof(strpool))))
+  return false;
+ if (!(elem->str = strdup(s)))
+ {
+  free(elem);
+  return false;
+ }
+ oom = false;
+ HASH_ADD_KEYPTR( hh, *pp, elem->str, strlen(elem->str), elem );
+ if (oom)
+ {
+  free(elem->str);
+  free(elem);
+  return false;
+ }
+ return true;
+}
+// for not zero terminated strings
+bool StrPoolAddStrLen(strpool **pp,const char *s,size_t slen)
+{
+ strpool *elem;
+ if (!(elem = (strpool*)malloc(sizeof(strpool))))
+  return false;
+ if (!(elem->str = malloc(slen+1)))
+ {
+  free(elem);
+  return false;
+ }
+ memcpy(elem->str,s,slen);
+ elem->str[slen]=0;
+ oom = false;
+ HASH_ADD_KEYPTR( hh, *pp, elem->str, strlen(elem->str), elem );
+ if (oom)
+ {
+  free(elem->str);
+  free(elem);
+  return false;
+ }
+ return true;
+}
+
+bool StrPoolCheckStr(strpool *p,const char *s)
+{
+ strpool *elem;
+ HASH_FIND_STR( p, s, elem);
+ return elem!=NULL;
+}
+
+void StrPoolDestroy(strpool **p)
+{
+ strpool *elem,*tmp;
+ HASH_ITER(hh, *p, elem, tmp) {
+   free(elem->str);
+   HASH_DEL(*p, elem);
+   free(elem);
+ }
+ *p = NULL;
+}