85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
#ifndef IO_H
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#define IO_H
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/select.h>
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#include <errno.h>
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int *get_readable(int *fds)
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{
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fd_set read_fds;
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static int readable[10];
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memset(readable, 0, sizeof(readable));
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FD_ZERO(&read_fds);
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int max_fd = -1;
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for (int i = 0; fds[i] != -1; i++)
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{
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FD_SET(fds[i], &read_fds);
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if (fds[i] > max_fd)
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max_fd = fds[i];
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}
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int ready = select(max_fd + 1, &read_fds, NULL, NULL, NULL);
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if (ready == -1)
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{
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perror("select");
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return readable;
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}
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int readable_index = 0;
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readable[readable_index] = -1;
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for (int i = 0; fds[i] != -1; i++)
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{
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if (FD_ISSET(fds[i], &read_fds))
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{
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readable[readable_index] = fds[i];
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readable_index++;
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readable[readable_index] = -1;
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}
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}
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return readable;
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}
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void msleep(uint time)
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{
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usleep(time * 1000);
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}
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char *read_line(int fd, size_t limit)
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{
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char *buffer = (char *)malloc(limit + 1);
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ssize_t length = read(fd, buffer, limit);
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if (length > 0)
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{
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buffer[length] = 0;
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return buffer;
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}
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else if (length == 0)
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{
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printf("Child process closed");
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}
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else
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{
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perror("read");
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}
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return NULL;
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}
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char *write_str(int fd, char *data)
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{
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write(fd, data, strlen(data));
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}
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void type(int fd, char *text)
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{
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while (*text)
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{
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char content[] = {*text, 0};
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write(fd, content, strlen(content));
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text++;
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msleep(100);
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}
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}
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#endif
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