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env.c
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env.c
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#include "main.h"
/**
* print_env - Print environment variables.
*
*/
void print_env(void)
{
unsigned int i = 0;
while (environ[i])
{
_print(environ[i]);
_printchar('\n');
i++;
}
}
/**
* _setenv - Set a new env variable or modify.
* @var: Name of the env variable.
* @value: Value to set for the env variable.
* Return: 0 on success, or 1 on failure.
*/
int _setenv(const char *var, const char *value)
{
int code = 0;
if (var == NULL || value == NULL)
{
return (1);
}
if (setenv(var, value, 1) == 0)
{
return (code);
}
else
{
_printerr("setenv: Failed to set environment variable", NULL);
return (1);
}
}
#include "main.h"
/**
* _getenv - Get the value of an environment variable.
* @name: The name of the environment variable to retrieve.
*
* Return: The value of the environment variable, or NULL if not found.
*/
char *_getenv(const char *name)
{
unsigned int i = 0;
char *value;
while (environ[i] != NULL)
{
if (_strncmp(environ[i], name, _strlen(name)) == 0)
{
value = _strchr(environ[i], '=');
if (value != NULL)
return (_strdup(value + 1));
}
i++;
}
return (NULL);
}
/**
* _unsetenv - Remove env variable.
* @var: Name of the env variable.
* Return: 0 on success, or 1 on failure.
*/
int _unsetenv(const char *var)
{
int code = 0;
if (unsetenv(var) == 0)
{
return (code);
}
else
{
perror("Failed to unset environment variable");
return (1);
}
}