simple_shell/helpers.c at master · Raid55/simple_shell · GitHub

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#include "shell.h"

/**
* _tokount - counts number of tokens
* @str: input string
* @delim: delimiter string
* Return: delimiter count
*/
int _tokount(char *str, char *delim)
{
	int i = 0, j = 0;
	int c = 0;

	while (delim[i])
	{
		while (str[j])
			if (str[j++] == delim[i] && str[j] != delim[i])
				c++; /*haha c ++, get it...what a joke*/
		j = 0;
		i++;
	}
	return (c);
}
/**
* _is_arg_run_ready - tests for file access
* @arg: path to check
* Return: 1 on success, 0 on failure
*/
unsigned int _is_arg_run_ready(char *arg)
{
	if (access(arg, X_OK) == -1)
		return (0);
	else
		return (1);
}
/**
* _stralloc - concatenate count strings
* @count: string count
* Return: concatenated strings
*/
char *_stralloc(int count, ...)
{
	va_list valist;
	char *tmp_arg;
	char *tmp_ptr;
	char *tmp_ret;
	int sLen;
	int aLen;

	va_start(valist, count);

	tmp_arg = va_arg(valist, char *), count--;
	aLen = _strlen(tmp_arg);

	tmp_ret = malloc(sizeof(char) * aLen + 1);
	if (tmp_ret == NULL)
		perror("big segfult: "), exit(EXIT_FAILURE);

	_strcpy(tmp_ret, tmp_arg);
	while (count != 0)
	{
		tmp_arg = va_arg(valist, char *), count--;
		sLen = _strlen(tmp_ret), aLen = _strlen(tmp_arg);

		tmp_ptr = malloc(sizeof(char) * (sLen + aLen) + 1);
		if (tmp_ptr == NULL)
			perror("gros gros segfult: "), exit(EXIT_FAILURE);

		if (tmp_ret != NULL)
			_strcpy(tmp_ptr, tmp_ret), free(tmp_ret);
		_strcat(tmp_ptr, tmp_arg), tmp_ret = tmp_ptr;
	}

	va_end(valist);
	return (tmp_ret);
}
/**
* _find_env_get_value - get value of key
* @key: key is key
* Return: pointer to first letter env value
*/
char *_find_env_get_value(char *key)
{
	int i = 0;
	char *tmp;

	while (_strstr(environ[i], key) == NULL && environ[i] != NULL)
		i++;

	if (environ[i] == NULL)
		return (NULL);
	tmp = _strstr(environ[i], "="), tmp++;
	return (tmp);
}
/**
* _find_x_path - find path of program
* @env_paths: path token array
* @program: program string
* Return: absolute path of program
*/
char *_find_x_path(char **env_paths, char *program)
{
	int i = 1;
	char *tmp;

	tmp = _stralloc(3, env_paths[0], "/", program);
	while (access(tmp, X_OK) == -1 && env_paths[i] != NULL)
	{
		free(tmp);
		tmp = _stralloc(3, env_paths[i], "/", program);
		i++;
	}
	if (env_paths[i] == NULL)
		return (NULL);
	else
		return (tmp);
}