core string buffer implementation.

test/t_strbuf.c

@@ -0,0 +1,49 @@
+
+#include <stdio.h>
+#include <malloc.h>
+#include "../src/common/strbuf.h"
+
+void print_strbuf(strbuf_t *s) {
+
+    printf("block: %i, len: %i |%s|\n", s->alloc_size, s->len, s->buf);
+}
+
+int main() {
+
+    strbuf_t b = STRBUF_INIT;
+	char *str;
+
+    strbuf_append(&b, "    ", 4);
+    strbuf_append(&b, "abcdef", 6);
+	
+	print_strbuf(&b);
+	
+    strbuf_append(&b, "012345678901234567890123456789", 30);
+    strbuf_append(&b, "      ", 6);
+
+    print_strbuf(&b);
+
+    strbuf_rtrim(&b);
+
+    print_strbuf(&b);
+	
+	strbuf_ltrim(&b);
+
+    print_strbuf(&b);
+	
+	strbuf_trim(&b);
+	
+	print_strbuf(&b);
+
+	strbuf_rev(&b);
+	
+	print_strbuf(&b);
+	
+    str = strbuf_release(&b);
+	
+	printf("released |%s|\n", str);
+	
+	free(str);
+
+    return 0;
+}