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args_manip.c
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args_manip.c
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/******************************************************************************
* File: args_manip.c
* Author: Gregory Chan
* Description: This file contains the functions ReadArgs() and PrintArgs() for
reading and printing arguments
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "args_manip.h"
void ReadArgs(char *in, char **argv, int size)
{
char *current_arg;
int i = 0;
for (i = 0; i <= size; i++)
argv[i] = NULL;
i = 0;
// loop through string until no more args are left or # exceeds size
for (current_arg = strtok(in, " "); current_arg;
current_arg = strtok(NULL, " "))
{
if (i == size)
{
argv[i] = NULL;
return;
}
// dealing with last arg having a newline
if (current_arg[strlen(current_arg) - 1] == '\n')
current_arg[strlen(current_arg) - 1] = '\0';
// allocate memory and duplicate string
argv[i] = strdup(current_arg);
i++;
}
argv[i] = NULL;
}
void PrintArgs(char * const * const argv)
{
int i;
for (i = 0; argv[i] != NULL; i++)
{
printf("argv[%d] = '%s'\n", i, argv[i]);
}
}