From 3c5214a5915f4b5c27bc8bd69d5b515d7e5605a4 Mon Sep 17 00:00:00 2001
From: Brandon Rodriguez <brodriguez8774@gmail.com>
Date: Wed, 25 Oct 2017 20:53:53 -0400
Subject: [PATCH] Add handling for helper functions if passed value is null
---
HelperFunctions.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/HelperFunctions.c b/HelperFunctions.c
index 3695395..53790ef 100644
--- a/HelperFunctions.c
+++ b/HelperFunctions.c
@@ -40,6 +40,10 @@
* Return: Copy of source string.
*/
char* copy_string(char* source_ptr) {
+ // Check for valid input.
+ if (source_ptr == NULL) {
+ return NULL;
+ }
char* copy_ptr;
copy_ptr = calloc((strlen(source_ptr) + 1), sizeof(char));
if (copy_ptr != NULL) {
@@ -58,6 +62,10 @@ char* copy_string(char* source_ptr) {
* Return: Copy of source string.
*/
char* copy_string_with_buffer(char* source_ptr, int buffer_size) {
+ // Check for valid input.
+ if (source_ptr == NULL) {
+ return NULL;
+ }
char* copy_ptr;
copy_ptr = calloc(buffer_size, sizeof(char));
if (copy_ptr != NULL) {
@@ -130,6 +138,10 @@ double* copy_double(double* source_ptr) {
* Return: Lowercase version of initial string.
*/
char* to_lower_case(char* input_string) {
+ // Check for valid input.
+ if (input_string == NULL) {
+ return NULL;
+ }
int index = 0;
char* return_string = calloc((strlen(input_string) + 1), sizeof(char));
while (input_string[index]) {
@@ -146,6 +158,10 @@ char* to_lower_case(char* input_string) {
* Return: Uppercase version of initial string.
*/
char* to_upper_case(char* input_string) {
+ // Check for valid input.
+ if (input_string == NULL) {
+ return NULL;
+ }
int index = 0;
char* return_string = calloc((strlen(input_string) + 1), sizeof(char));
while (input_string[index]) {
@@ -164,6 +180,10 @@ char* to_upper_case(char* input_string) {
* Return: Converted version of initial string.
*/
char* first_letter_upper(char* input_string) {
+ // Check for valid input.
+ if (input_string == NULL) {
+ return NULL;
+ }
int index = 0;
char* return_string = calloc((strlen(input_string) + 1), sizeof(char));
while (input_string[index]) {
@@ -188,6 +208,10 @@ char* first_letter_upper(char* input_string) {
* Return: Quote-less version of initial string.
*/
char* remove_quotes(char* input_string) {
+ // Check for valid input.
+ if (input_string == NULL) {
+ return NULL;
+ }
size_t string_length = strlen(input_string);
int orig_index;
int replace_index = 0;
@@ -215,6 +239,10 @@ char* remove_quotes(char* input_string) {
* Return: Newline-less version of initial string.
*/
char* remove_newline(char* input_string) {
+ // Check for valid input.
+ if (input_string == NULL) {
+ return NULL;
+ }
size_t string_length = strlen(input_string);
int orig_index;
int replace_index = 0;
--
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