simple_shell/SS_errors1.c at master · Stephen842/simple_shell · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
#include "shell.h"
#include <limits.h>
/**
 * _erratoi - this function convert a string to an interger
 * @s: parameter showing the string to be converted
 * Return: 0 if successful
 */
int _erratoi(char *s)
{
	unsigned long int result = 0;
	int a = 0;

	if (*s == '+')
		s++;

	for (a = 0; s[a] != '\0'; a++)
	{
		if (s[a] >= '0' && s[a] <= '9')
		{
			result *= 10;
			result += (s[a] - '0');
			if (result > INT_MAX)
				return (-1);
		}
		else
			return (-1);
	}
	return (result);
}
/**
 * print_error - this function print an error message
 * @info: parameter showing a struct containing potential argument
 * @estr: parameter showing specified error string
 * Return: 0 if successful
 */
void print_error(info_t *info, char *estr)
{
	_eputs(info->fname);
	_eputs(": ");
	print_d(info->line_count, STDERR_FILENO);
	_eputs(": ");
	_eputs(info->argv[0]);
	_eputs(": ");
	_eputs(estr);
}

/**
 * print_d - this function print a decimal number to a file descriptor
 * @input: parameter showing the input
 * @fd: parameter indicating file descriptor
 * Return: the number of char printed
 */
int print_d(int input, int fd)
{
	int (*__putchar)(char) = _putchar;
	int a;
	unsigned int _abs_;
	int counted = 0;
	unsigned int current;

	if (fd == STDERR_FILENO)
		__putchar = _eputchar;
	if (input < 0)
	{
		_abs_ = -input;
		__putchar('-');
		counted++;
	}
	else
		_abs_ = input;
	current = _abs_;
	for (a = 1000000000; a > 1; a /= 10)
	{
		if (_abs_ / a)
		{
			__putchar('0' + current / a);
			counted++;
		}
		current %= a;
	}
	__putchar('0' + current);
	counted++;

	return (counted);

}
/**
 * convert_number - this function convert a number to a string
 * @num: parameter showing the number
 * @base: funnction parameter
 * @flags: parameter indicating arguments flags
 * Return: a string
 */
char *convert_number(long int num, int base, int flags)
{
	static char buffer[50];
	char sign = 0;
	char *ptr;
	unsigned long n = num;
	char *array = flags & CONVERT_LOWERCASE ? "0123456789abcdef" : "0123456789ABCDEF";

	if (!(flags & CONVERT_UNSIGNED) && num < 0)
	{
		n = (-num);
		sign = '-';
	}

	ptr = &buffer[49];
	*ptr = '\0';

	do {
		*--ptr = array[n % base];
		n /= base;
	} while (n != 0);

	if (sign)
		*--ptr = sign;

	return (ptr);
}
/**
 * remove_comments- this function replaces the first occurence of a char in str
 * @buf: parameter indicating the address of the modified string
 * Return: 0 if successful
 */
void remove_comments(char *buf)
{
	int a;

	for (a = 0; buf[a] != '\0'; a++)
	{
		if (buf[a] == '#' && (!a || buf[a - 1] == ' '))
		{
			buf[a] = '\0';
			break;
		}
	}
}