at work

clib/cstring.c

@@ -0,0 +1,51 @@
+
+/*
+ *
+ * Copyright 2023 Oleg Borodin  <borodin@unix7.org>
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <cstring.h>
+
+#define INIT_CAPA 64
+
+/* String container */
+void* cstring_init(cstring_t* str) {
+    str->data = malloc(INIT_CAPA + 1);
+    if (str->data == NULL) return NULL;
+    memset(str->data, '\0', INIT_CAPA + 1);
+    str->capa = INIT_CAPA;
+    str->size = 0;
+    return str->data;
+}
+
+
+void* cstring_append(cstring_t* str, char* add) {
+    size_t addsize = strlen(add);
+    size_t newsize = str->size + addsize;
+    if (newsize >= str->capa) {
+        size_t newcapa = newsize + 1;
+        char* newstr = realloc(str->data, newcapa);
+        if (newstr == NULL) return NULL;
+        str->data = newstr;
+        str->capa = newcapa;
+    }
+    strcpy(&(str->data[str->size]), add);
+    str->data[newsize + 1] = '\0';
+    str->size = newsize;
+    return str->data;
+}
+
+char* cstring_getref(cstring_t* str) {
+    return str->data;
+}
+
+
+void cstring_destroy(cstring_t* str) {
+    if (str == NULL) return;
+    free(str->data);
+}