fixes curl returning to big of a response

src/curl.c

@@ -5,8 +5,8 @@
 
 #include "include/curl.h"
 
-#define API_URL "https://openlibrary.org/search.json?q="
-#define API_URL_LEN 38
+#define API_URL "https://openlibrary.org/search.json?page=1&q="
+#define API_URL_LEN 45
 
 static void setup_api_link(const char* isbn, char** buf)
 {

src/main.c

@@ -7,6 +7,7 @@
 #include "include/json.h"
 
 struct flags {
+	char* isbn;
 	bool json, db, print;
 };
 
@@ -17,8 +18,8 @@ const char* argp_program_bug_address = "supernovaa41@gmx.com";
 static char doc[] = "Lookup details of a book from the ISBN. Using OpenLibrary API.";
 static char args_doc[] = "<ISBN>";
 static struct argp_option options[] = {
-	{0, 'j', "json", 0, "output to json", 0},
-	{0, 'd', "db", 0, "output to sqlite3 database", 0},
+	{"json", 'j', 0, 0, "output to json", 0},
+	{"db", 'd', 0, 0, "output to sqlite3 database", 0},
 	{0, 'p', 0, 0, "print the full json response", 0},
 	{0}
 };
@@ -44,7 +45,12 @@ static error_t parse_opt(int key, char* arg, struct argp_state* state)
 		case 'p':
 			flags->print = true;
 			break;
+		case ARGP_KEY_ARG:
+			flags->isbn = arg;
+			break;
 		case ARGP_KEY_END:
+			if (state->arg_num < 1)
+				argp_usage(state);
 			break;
 		default:
 			return ARGP_ERR_UNKNOWN;
@@ -63,7 +69,8 @@ int main(int argc, char* argv[])
 	init_flags(&flags);
 	argp_parse(&argp, argc, argv, 0, 0, &flags);
 
-	book_api_call("9780762437818", &resp);
+	//book_api_call("9780762437818", &resp);
+	book_api_call(flags.isbn, &resp);
 
 	if (flags.print)
 		puts(resp.buf);