buffer_functions.c

#include "holberton.h"
#include <unistd.h>
/**
 * check_val - check format validity
 * Description: Checks the format string for invalid formats.
 * @fmt: Format string
 * @args: List of arguments (Needed for get precision)
 * Return: 1 if valid, 0 if not.
 */
int check_val(char *fmt, va_list args)
{
	form_t *format_s;
	int fmt_len = _strlen(fmt);
	int new_len;
	while (*fmt)
	{
		if (*fmt == '%')
		{
			if (!*(fmt + 1))
			{
				free(fmt - fmt_len + 1);
				return (0);
			}
			if (*(fmt + 1) == '%')
				fmt += 2;
			else
			{
				format_s = get_formatting(&fmt, args);
				va_arg(args, void);
				if (!format_s)
				{
					new_len = _strlen(fmt);
					free(fmt - (fmt_len - new_len));
					return (0);
				}
				free(format_s->flags);
				free(format_s);
			}
		}
		else
			fmt++;
	}
	free(fmt - fmt_len);
	return (1);
}

/**
 * _free - free pointers
 * Description: Frees all pointers given to it
 * @n: Number of pointers to free
 */
void _free(int n, ...)
{
	va_list args;

	va_start(args, n);
	while(n--)
		free(va_arg(args, void *));
}
/**
 * save_to_buffer - save to buffer
 * Desciption: Appends a string to the end of the local buffer.
 * @buffer: Double pointer to local buffer. Needed as a double to extend with
 *          extend_buffer function.
 * @f_text: String of text to save to the buffer.
 * Return: The length of the string appended to the buffer.
 */
void save_to_buffer(char **buffer, char *f_text, int *buffer_index)
{
	int index;

	for (index = 0; *(f_text + index); index++, (*buffer_index)++)
	{
		if (*buffer_index % 1024 == 0 && *buffer_index != 0)
			write(1, *buffer, 1024);
		*(*buffer + (*buffer_index % 1024)) = *(f_text + index);
	}
}