From 114dbc24940d2b32ccdda7806f1bb44e5b18b690 Mon Sep 17 00:00:00 2001
From: Tilo K <tiloklarenbeek@gmail.com>
Date: Wed, 19 Nov 2025 20:38:43 +0100
Subject: [PATCH] feat: check for oom in string

---
 CMakeFiles/cmake.check_cache |  1 +
 CMakeLists.txt               |  3 ++-
 helper.h                     | 16 ++++++++++++++++
 string.c                     |  9 +++++++++
 4 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 CMakeFiles/cmake.check_cache
 create mode 100644 helper.h

diff --git a/CMakeFiles/cmake.check_cache b/CMakeFiles/cmake.check_cache
new file mode 100644
index 0000000..3dccd73
--- /dev/null
+++ b/CMakeFiles/cmake.check_cache
@@ -0,0 +1 @@
+# This file is generated by cmake for dependency checking of the CMakeCache.txt file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb8235c..49435a3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,8 @@ add_library(tstd STATIC library.c
         include/tstd/string.h
         string.c
         list.c
-        include/tstd/list.h)
+        include/tstd/list.h
+        helper.h)
 
 
 add_executable(test_tstd_string test/test_string.c)
diff --git a/helper.h b/helper.h
new file mode 100644
index 0000000..d8762a0
--- /dev/null
+++ b/helper.h
@@ -0,0 +1,16 @@
+//
+// Created by tilok on 19.11.2025.
+//
+
+#ifndef TSTD_HELPER_H
+#define TSTD_HELPER_H
+#include <stdio.h>
+
+#define OOM(ptr) { \
+    if(ptr == NULL) { \
+        puts("Out of memory"); \
+        exit(137); \
+    } \
+}
+
+#endif //TSTD_HELPER_H
\ No newline at end of file
diff --git a/string.c b/string.c
index ff3bd3c..e830f8d 100644
--- a/string.c
+++ b/string.c
@@ -1,4 +1,5 @@
 #include  "tstd/string.h"
+#include "helper.h"
 
 size_t str_count_occurrences(const char* str, const char c) {
     size_t i = 0;
@@ -28,6 +29,8 @@ size_t str_count_occurrences_of_substring(const char* str, const char* substr) {
 size_t str_split_by_char(const char* str, const char delimiter, char*** result) {
     const size_t size = str_count_occurrences(str, delimiter);
     char** parts = malloc((size+1) * sizeof(char*));
+    OOM(parts);
+
     int curr_part_idx = 0;
     int last_part_end = 0;
     int idx = 0;
@@ -35,6 +38,7 @@ size_t str_split_by_char(const char* str, const char delimiter, char*** result)
         if (str[idx] == delimiter) {
             const int len = idx - last_part_end;
             char* part = malloc(sizeof(char) * (len+1));
+            OOM(part);
             memcpy(part, &str[last_part_end], len);
             part[idx-last_part_end] = '\0';
 
@@ -45,6 +49,7 @@ size_t str_split_by_char(const char* str, const char delimiter, char*** result)
         idx++;
     }
     char* part = malloc(sizeof(char) * (idx-last_part_end+1));
+    OOM(part);
     memcpy(part, &str[last_part_end], idx-last_part_end);
     part[idx-last_part_end] = '\0';
     parts[curr_part_idx++] = part;
@@ -64,6 +69,7 @@ size_t str_split_by_substring(const char* str, const char* substr, char*** resul
         if (strstr(&str[idx], substr) == &str[idx]) {
             const size_t len = idx - last_part_end;
             char* part = malloc(sizeof(char) * (len+1));
+            OOM(part);
             memcpy(part, &str[last_part_end], len);
             part[len] = '\0';
 
@@ -75,6 +81,7 @@ size_t str_split_by_substring(const char* str, const char* substr, char*** resul
     }
     const size_t len = idx - last_part_end;
     char* part = malloc(sizeof(char) * (len+1));
+    OOM(part);
     memcpy(part, &str[last_part_end], len);
     part[len] = '\0';
 
@@ -105,6 +112,7 @@ char* str_concat(const char* str1, const char* str2) {
     const size_t len2 = strlen(str2);
 
     char* result = malloc(sizeof(char) * (len1 + len2 + 1));
+    OOM(result);
     memcpy(result, str1, len1);
     memcpy(&result[len1], str2, len2);
     result[len1 + len2] = '\0';
@@ -126,6 +134,7 @@ char* str_trim(const char* str) {
     }
 
     char* new_str = malloc(sizeof(char) * (end - start + 2));
+    OOM(new_str);
     memcpy(new_str, &str[start], end - start + 1);
     new_str[end-start+1] = '\0';