history purge

nfq/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;
+}