📝 check_rgb

This function checks if a given string represents a valid RGB color value in the format "R,G,B", where R, G, and B are integers in the range 0-255.

⚙️ Parameters

Parameter	Type	Description
rgb	char*	A string representing the RGB values separated by commas.

🔁 Returns

Return value	Description
bool	Returns true if the input string represents a valid RGB value, or false otherwise.

📖 Description

The check_rgb function validates whether the input string is a correctly formatted RGB value:

• The input string is split into an array using , as the delimiter.
• The function checks if the array has exactly 3 elements (R, G, B). If not, it frees the allocated array and returns false.
• Each element is checked to ensure it is a number using ft_isnumber.
• Each number is validated to be in the acceptable RGB range (0-255) using check_range.
• Memory allocated for the array is freed before returning the result.

The function ensures both the format and the numeric validity of the RGB components.

💡 Example Usage

char *color = "255,128,64";

if (check_rgb(color)) {
    printf("Valid RGB color!\n");
} else {
    printf("Invalid RGB color.\n");
}