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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "main.h"
void error(char *c)
{
fprintf(stderr, "%s: %s\n", c, strerror(errno));
exit(1);
}
list *list_create(char title[], char id[])
{
list *x = malloc(sizeof(list));
sscanf(title, "%199[^\n]", x->name);
sscanf(id, "%11s", x->id);
x->next = NULL;
return x;
}
void list_free(list *start)
{
list *i;
list *next = NULL;
for (i = start; i != NULL; i = next) {
next = i->next;
free(i);
}
}
void list_append(list *list_first, char title[], char id[])
{
list *i;
for(i = list_first; i->next != NULL; i = i->next);
i->next = list_create(title, id);
}
void list_print_item(list *x, int i)
{
list *p;
if (i == -1){
for (p = x; p->next != NULL; p = p->next);
} else {
for(p = x; i != 0; p = p->next, i--){
if (p == NULL) {
fprintf(stderr, "List index out of range");
exit(1);
}
}
}
printf("title: %s\n", p->name);
printf("id: %s\n\n", p->id);
}
list *list_get_node(list *x, int index)
{
list *p;
for (p = x; index != 0; p = p->next, index--) {
if (p == NULL) {
fprintf(stderr, "List index out of range");
exit(1);
}
}
return p;
}
list *parse_stream(FILE *file)
{
int i;
list *videos = list_create("", "");
char buffer_id[ID_LENGTH], buffer_title[TITLE_LENGTH];
do {
i = fscanf(file, "\"videoRenderer\":{\"videoId\":\"%11s\"", buffer_id);
if (i == 1){
do{
i = fscanf(file, "\"title\":{\"runs\":[{\"text\":%199[^}]\"}", buffer_title);
if (i == 1){
list_append(videos, buffer_title, buffer_id);
break;
}
} while (fscanf(file, "%*c") != EOF);
}
} while (fscanf(file, "%*c") != EOF);
return videos;
}
char *argv_concat(char *concat_char, char **argv, int argc)
{
int i;
size_t concat_length = 0;
concat_char[0] = '\0';
for (i = 1; i < argc; i++){
concat_length += strlen(argv[i]);
}
concat_length += argc - 2;
if (concat_length > TITLE_LENGTH - 1){
fprintf(stderr,
"Input characters exceded: you can enter %i "
"chars at most not %i\n",
TITLE_LENGTH - 1, (int)concat_length);
exit(1);
}
strcat(concat_char, argv[1]);
for (i = 2; i < argc; i++) {
strcat(concat_char, "+");
strcat(concat_char, argv[i]);
}
return concat_char;
}
int main(int argc, char **argv)
{
char query[TITLE_LENGTH];
if (argc < 2) {
printf("You must provide at least 1 argument not %i\n", argc - 1);
exit(1);
}
argv_concat(query, argv, argc);
char curl_query[TITLE_LENGTH + 43] = {"https://www.youtube.com/results?search_query=algo"};
strcat(curl_query, query);
int curl_main_pipe[2];
if (pipe(curl_main_pipe) == -1) {
error("Can't create the pipe");
}
pid_t curl_pid = fork();
if (curl_pid == -1) {
error("Can't fork curl process");
} else if (!curl_pid) {
close(curl_main_pipe[0]);
dup2(curl_main_pipe[1], 1);
if (execlp("curl", "curl", curl_query, NULL) == -1) {
error("Can't run curl command");
}
}
dup2(curl_main_pipe[0], 0);
close(curl_main_pipe[1]);
list *videos = parse_stream(stdin);
if (waitpid(curl_pid, NULL, 0) == -1) {
error("Can't wait curl process");
}
close(curl_main_pipe[0]);
if (!freopen("/dev/tty", "r", stdin)) {
error("/dev/tty");
}
list *q;
int i = 0, index_video;
do {
for (q = videos->next, i = 1; q != NULL; q = q->next, i++) {
printf("%3d %s\n", i, q->name);
}
printf("Youtube results select one video i=%i: ", i);
scanf("%d", &index_video);
} while (index_video >= i);
q = list_get_node(videos, index_video);
char url_watch[45];
sprintf(url_watch, "https://www.youtube.com/watch?v=%s", q->id);
list_free(videos);
if (execlp("mpv", "mpv", url_watch, NULL) == -1) {
error("Can't run mpv");
}
return 0;
}
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