From 414e53e6e976fc73442cba8225a7a962e8403462 Mon Sep 17 00:00:00 2001
From: Sani7 <sander.speetjens@gmail.com>
Date: Sat, 2 Dec 2023 21:01:09 +0100
Subject: [PATCH] tcp_cmd

Add tcp_cmd_remove_leading_space + tests
---
 project/Core/Inc/tcp_cmd.h |  1 +
 project/Core/Src/tcp_cmd.c | 11 +++++++++++
 tests/tcp_cmd.cpp          | 16 ++++++++++++++++
 3 files changed, 28 insertions(+)

diff --git a/project/Core/Inc/tcp_cmd.h b/project/Core/Inc/tcp_cmd.h
index 17ebdd0..68a702f 100644
--- a/project/Core/Inc/tcp_cmd.h
+++ b/project/Core/Inc/tcp_cmd.h
@@ -22,6 +22,7 @@
 #include <ctype.h>
 
 void tcp_cmd_remove_newline(char* str, size_t len);
+char* tcp_cmd_remove_leading_space(char* str, size_t len);
 char* tcp_cmd_get_filename_ext(char* filename);
 char* tcp_cmd_get_next_token(char* input, const char* delimiters, char** next);
 void tcp_cmd_init(void);
diff --git a/project/Core/Src/tcp_cmd.c b/project/Core/Src/tcp_cmd.c
index a30a58c..04946c5 100644
--- a/project/Core/Src/tcp_cmd.c
+++ b/project/Core/Src/tcp_cmd.c
@@ -74,6 +74,17 @@ void tcp_cmd_remove_newline(char* str, size_t len) {
     str[i] = '\0';
 }
 
+char* tcp_cmd_remove_leading_space(char* str, size_t len) {
+    size_t i = 0;
+    while (str[i] != '\0' && i < len) {
+        if (isspace((int)str[i]) == 0) {
+            return &str[i];
+        }
+        i++;
+    }
+    return NULL;
+}
+
 /**
  * @brief This function converts a string to lowercase
  * @param str The string to convert
diff --git a/tests/tcp_cmd.cpp b/tests/tcp_cmd.cpp
index 22ec55e..6c755a9 100644
--- a/tests/tcp_cmd.cpp
+++ b/tests/tcp_cmd.cpp
@@ -54,6 +54,22 @@ TEST(TCP_CMD, tcp_cmd_remove_newline) {
     free(cmd);
 }
 
+TEST(TCP_CMD, tcp_cmd_remove_leading_space) {
+    char* cmd = (char*)calloc(50, 1);
+    strcpy(cmd, "help");
+    EXPECT_STREQ(tcp_cmd_remove_leading_space(cmd, strlen(cmd)), "help");
+    strcpy(cmd, " help");
+    EXPECT_STREQ(tcp_cmd_remove_leading_space(cmd, strlen(cmd)), "help");
+    strcpy(cmd, "  help");
+    EXPECT_STREQ(tcp_cmd_remove_leading_space(cmd, strlen(cmd)), "help");
+    strcpy(cmd, "   help");
+    EXPECT_STREQ(tcp_cmd_remove_leading_space(cmd, strlen(cmd)), "help");
+    strcpy(cmd, "    help");
+    EXPECT_STREQ(tcp_cmd_remove_leading_space(cmd, strlen(cmd)), "help");
+    strcpy(cmd, "\n\t\r\n     help");
+    EXPECT_STREQ(tcp_cmd_remove_leading_space(cmd, strlen(cmd)), "help");
+}
+
 TEST(TCP_CMD, tcp_data_cb) {
     char* cmd = (char*)calloc(50, 1);
     std::string output;