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parsing.c
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parsing.c
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#include "main.h"
/**
* check_for_executable - setup arguments
* @args: pointer to array of strings
* @str: input string
* @path: path in global environment
* @index: current element index
*
* Return: void
*/
void check_for_executable(char **args, char *str, char *path, int index)
{
char *tmp;
if (str != NULL)
{
tmp = get_path_from_environ(path, str);
if (tmp != NULL)
{
free(args[0]);
args[0] = custom_strdup(tmp);
free(tmp);
}
else
{
free(args[0]);
if (index > 1)
free(args[1]);
args[0] = NULL;
}
free(str);
}
}
/**
* setup_arguments - setup arguments
* @args: pointer to array of strings
* @input: input string
* @delim: input delimeter
*
* Return: integer
*/
int setup_arguments(char **args, char *input, char *delim)
{
char *s, *str, *path;
struct stat sb;
int i = 0;
s = strtok(input, delim);
str = NULL;
if (s[0] == '/' || s[0] == '.')
{
if (stat(s, &sb) == -1)
{
args[0] = NULL;
return (0);
}
}
else if (_strcmp(s, "exit") == 0)
{
args[0] = custom_strdup("exit");
return (0);
}
else
{
str = custom_strdup(s);
}
for (i = 0; s != NULL; i++)
{
args[i] = custom_strdup(s);
s = strtok(NULL, delim);
}
path = _get_env("PATH");
check_for_executable(args, str, path, i);
free(path);
return (i);
}
/**
* parse_input - splits the input
* @input: input string
* @len: length of string
*
* Return: array of strings
*/
char **parse_input(char *input, __attribute__((__unused__)) int len)
{
char *delimeter;
char **args;
int i;
args = (char **)malloc(1024 * sizeof(*args));
if (args == NULL)
return (NULL);
delimeter = custom_strdup(" \n\t\r");
i = setup_arguments(args, input, delimeter);
if (args == NULL)
{
free(delimeter);
return (NULL);
}
if (i > 0)
args[i] = NULL;
free(delimeter);
return (args);
}