It works, now lets add comments and documentation

3 files changed, 117 insertions, 35 deletions

diff --git a/Makefile b/Makefile
index bf3c585..42c1b78 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,16 @@
 CC = gcc
-CFLAGS=-std=c99 -pedantic-errors
+CFLAGS=-std=c99 -pedantic-errors -Wall
+BIN=cli-tube
 
 build: main.c
-	$(CC) $(CFLAGS) main.c -o main
+	$(CC) $(CFLAGS) main.c -o $(BIN)
 
 debug: main.c 
-	$(CC) -g main.c -o main $(CFLAGS)
+	$(CC) -g main.c -o $(BIN) $(CFLAGS)
+	valgrind --leak-check=full ./$(BIN) foo bar
+
+test: test.c
+	$(CC) test.c -o test $(CFLAGS) -lcurl
+
+clean:
+	rm main *.o $(BIN) -v
diff --git a/main.c b/main.c
index 7d0370a..bc3a51a 100644
--- a/main.c
+++ b/main.c
@@ -1,7 +1,11 @@
 #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)
@@ -13,7 +17,7 @@ void error(char *c)
 list *list_create(char title[], char id[])
 {
     list *x = malloc(sizeof(list));
-    sscanf(title, "%100[^\n]", x->name);
+    sscanf(title, "%199[^\n]", x->name);
     sscanf(id, "%11s", x->id);
     x->next = NULL;
     return x;
@@ -44,7 +48,7 @@ void list_print_item(list *x, int i)
     } else {
         for(p = x; i != 0; p = p->next, i--){
             if (p == NULL) {
-                printf("List index out of range");
+                fprintf(stderr, "List index out of range");
                 exit(1);
             }
         }
@@ -53,54 +57,124 @@ void list_print_item(list *x, int i)
     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;
 }
 
-int main(int argc, char **argv)
+char *argv_concat(char *concat_char, char **argv, int argc)
 {
-    FILE *file;
-    list *videos = list_create("", "");
-    char buffer_id[ID_LENGTH], buffer_name[TITLE_LENGTH];
     int i;
+    size_t concat_length = 0;
+    concat_char[0] = '\0';
+    
+    for (i = 1; i < argc; i++){
+        concat_length += strlen(argv[i]);
+    }
 
-    if (argc != 2){
-        printf("You must provide 1 argument not %i\n", argc - 1);
+    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);
     }
 
-    if (!strcmp(argv[1], "-")){
-        file = stdin;
+    strcat(concat_char, argv[1]);
+    for (i = 2; i < argc; i++) {
+        strcat(concat_char, "+");
+        strcat(concat_char, argv[i]);
+    }
+    return concat_char;
+}
 
-    } else {
-        file = fopen(argv[1], "r");
-        if (file == NULL){
-            error("Can't open file stream");
-        }
+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);
     }
 
-    do {
-        i = fscanf(file, "\"videoRenderer\":{\"videoId\":\"%11s\"", buffer_id);
-        if (i == 1){
-            do{
-                i = fscanf(file, "\"title\":{\"runs\":[{\"text\":\"%100[^\"]\"", buffer_name);
-                if (i == 1){
-                    list_append(videos, buffer_name, buffer_id);
-                    break;
-                }
-            } while (fscanf(file, "%*c") != EOF);
+    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");
         }
-    } while (fscanf(file, "%*c") != EOF);
+    }
+    dup2(curl_main_pipe[0], 0);
+    close(curl_main_pipe[1]);
 
-    list *q;
-    for (q = videos; q != NULL; q = q->next){
-        printf("title: %s\n", q->name);
-        printf("vidId: %s\n", q->id);
-        printf("\n\n");
+    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;
 }
diff --git a/main.h b/main.h
index 163673a..ccc9ae1 100644
--- a/main.h
+++ b/main.h
@@ -1,4 +1,4 @@
-#define TITLE_LENGTH 101
+#define TITLE_LENGTH 200
 #define ID_LENGTH 12
 
 typedef struct list {