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utility.c
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utility.c
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#include "monty.h"
/**
* allocte_error - print error message.
*
* Return: -1
*/
int allocte_error(void)
{
fprintf(stderr, "Error: malloc failed\n");
status = -1;
return (-1);
}
/**
* my_getline - clone to getline().
*
* @lineptr: place to write data.
* @n: buffer.
* @stream: file to read from.
*
* Return: line length.
*/
ssize_t my_getline(char **lineptr, size_t *n, FILE *stream)
{
size_t pos = 0;
int c;
size_t new_n;
char *new_lineptr;
if (*lineptr == NULL)
{
*n = 220;
*lineptr = malloc(*n);
if (*lineptr == NULL)
return (allocte_error());
}
while ((c = getc(stream)) != EOF)
{
if (pos + 1 >= *n)
{
new_n = *n + 10;
new_lineptr = malloc(new_n);
if (new_lineptr == NULL)
return (allocte_error());
memcpy(new_lineptr, *lineptr, pos);
free(*lineptr);
*lineptr = new_lineptr;
*n = new_n;
}
(*lineptr)[pos++] = c;
if (c == '\n')
break;
}
if (pos == 0)
return (-1);
(*lineptr)[pos] = '\0';
new_lineptr = malloc(pos + 1);
if (new_lineptr == NULL)
return (allocte_error());
memcpy(new_lineptr, *lineptr, pos + 1);
free(*lineptr);
*lineptr = new_lineptr;
return (pos + 1);
}
/**
* is_integer - check that string is int.
*
* @str: string to check it.
*
* Return: 0 if not and retuen 1 if all is digits.
*/
int is_integer(const char *str)
{
if (*str == '-')
str++;
if (*str == '\0')
return (0);
while (*str != '\0')
{
if (!isdigit(*str))
return (0);
str++;
}
return (1);
}