add string type

.clangd

@@ -1,2 +1,2 @@
 CompileFlags:
-  Add: [-xc, -DL_ARRAY_IMPLEMENTATION]
+  Add: [-xc, -DL_ARRAY_IMPLEMENTATION, -DL_STRING_IMPLEMENTATION]

Makefile

@@ -8,6 +8,7 @@ BUILD_DIR := build
 TEST_BUILD_DIR := $(BUILD_DIR)/test
 TEST_BUILD_FILES := $(TEST_BUILD_DIR)/test.o \
 					$(TEST_BUILD_DIR)/array.o \
+					$(TEST_BUILD_DIR)/string.o \
 
 INCLUDE_INSTALL_PATH := /usr/local/include/LTypes
 

include/lstring.h

@@ -0,0 +1,60 @@
+#ifndef LTYPES_STRING_H
+#define LTYPES_STRING_H
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define MAX_STRING_LEN 1024
+
+typedef struct {
+    char* buf;
+    size_t len;
+} LString;
+
+LString* l_string_new(const char* fmt, ...);
+void l_string_delete(LString* str);
+int l_string_cmp(LString* strA, LString* strB);
+LString* l_string_concat(LString* strA, LString* strB);
+
+#ifdef L_STRING_IMPLEMENTATION
+
+#include <stdarg.h>
+
+LString* l_string_new(const char* fmt, ...) {
+    va_list args;
+    va_start(args, fmt);
+
+    char temp_string[MAX_STRING_LEN];
+    vsnprintf(temp_string, MAX_STRING_LEN, fmt, args);
+
+    va_end(args);
+
+    LString* str = calloc(1, sizeof(LString));
+    str->len = strlen(temp_string);
+
+    str->buf = malloc(str->len + 1);
+    if (str->buf != NULL) {
+        strcpy(str->buf, temp_string);
+    }
+
+    return str;
+}
+
+void l_string_delete(LString* str) {
+    free(str);
+}
+
+int l_string_cmp(LString* strA, LString* strB) {
+    int num_chars = (strA->len <= strB->len) ? strB->len : strA->len;
+    return strncmp(strA->buf, strB->buf, num_chars);
+}
+
+LString* l_string_concat(LString* strA, LString* strB) {
+    return l_string_new("%.*s%.*s", strA->len, strA->buf, strB->len, strB->buf);
+}
+
+#endif
+
+#endif

test/string.c

@@ -0,0 +1,29 @@
+#define L_STRING_IMPLEMENTATION
+#include "../include/lstring.h"
+#include <stdio.h>
+
+int test_l_string() {
+    int RETURN_CODE = 0;
+    printf("test_l_string() : ");
+
+    int integer_0 = 25;
+    int integer_1 = 15;
+
+    LString* test_string_0 = l_string_new("I would like to purchase item id `%d`", integer_0);
+    LString* test_string_1 = l_string_new(" for `%d` coins.", integer_1);
+    
+    if (l_string_cmp(test_string_0, l_string_new("I would like to purchase item id `25`"))) RETURN_CODE++;
+    if (l_string_cmp(test_string_1, l_string_new(" for `15` coins."))) RETURN_CODE++;
+
+    LString* test_string_2 = l_string_new("I would like to purchase item id `25` for `15` coins.");
+    LString* test_string_3 = l_string_concat(test_string_0, test_string_1);
+    if (l_string_cmp(test_string_2, test_string_3)) RETURN_CODE++;
+
+    l_string_delete(test_string_0);
+    l_string_delete(test_string_1);
+    l_string_delete(test_string_2);
+    l_string_delete(test_string_3);
+
+    printf("%d\n", RETURN_CODE);
+    return RETURN_CODE;
+}

test/test.c

@@ -2,10 +2,11 @@
 
 #define L_TYPES_AUTHOR  "Lucielle <luci@git.lunarware.tech"
 #define L_TYPES_REPO    "https://git.lunarware.tech/lucielle/ltypes.git"
-#define L_TYPES_VERSION "0.1.1"
+#define L_TYPES_VERSION "0.2.0"
 #define L_TYPES_LICENSE "GNU GPL v3"
 
 int test_l_array();
+int test_l_string();
 
 int main(void) {
     printf("AUTHOR: %s\n", L_TYPES_AUTHOR);
@@ -16,6 +17,7 @@ int main(void) {
     int RETURN_CODE = 0;
 
     RETURN_CODE += test_l_array();
+    RETURN_CODE += test_l_string();
     
     printf("\nError Total: %d\n", RETURN_CODE);
     return RETURN_CODE;