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main.h
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main.h
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#include <stdlib.h>
typedef struct command_queue_node {
char *command;
struct command_queue_node *next_command_node;
} command_queue_node;
typedef struct command_queue {
command_queue_node *head;
command_queue_node *tail;
} command_queue;
void add_command_to_queue(char *cmd, command_queue *queue) {
command_queue_node *node = malloc(sizeof(command_queue_node));
node->command = cmd;
node->next_command_node = NULL;
if (queue->tail != NULL) {
queue->tail->next_command_node = node;
}
queue->tail = node;
if (queue->head == NULL) queue->head = queue->tail;
}
char* get_next_command_from_queue(command_queue *queue) {
command_queue_node *node = queue->head;
if (node == NULL) return NULL;
char *cmd = node->command;
queue->head = node->next_command_node;
if (node == queue->tail) queue->tail = NULL;
free(node);
return cmd;
}