Задача на автомат

avtomat/main.c

+#include <curl/curl.h>
+#include <curl/easy.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void usage();
+char *get_default_filepath(char *);
+
+
+int
+main(int argc, char** argv)
+{
+	char *filepath = NULL;
+	char *url = NULL;
+
+	if(argc == 2){
+		url = argv[1];
+		filepath = get_default_filepath(url); //filepath is a pointer inside url
+	}else if(argc == 3){
+		url = argv[1];
+		filepath = argv[2];
+	}else
+		usage();
+
+	printf("url:%s\nfilepath:%s\n", url, filepath);
+	
+	CURL *curl = curl_easy_init();
+	CURLcode res;
+
+	if(!curl)
+	{
+		fprintf(stderr, "Curl init failled, baling!");
+		exit(1);
+	}
+
+	FILE *file;
+	file = fopen(filepath,"wb");
+
+	curl_easy_setopt(curl, CURLOPT_URL, url);
+	curl_easy_setopt(curl, CURLOPT_WRITEDATA, file);	
+
+
+	if(!file){
+		fprintf(stderr, "Could not open file!");
+		exit(1);
+	}
+
+	res = curl_easy_perform(curl);
+
+	if(res != CURLE_OK)
+            fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));	
+	else
+            fprintf(stdout, "curl returned %s; Downloaded %s \n", curl_easy_strerror(res), filepath);	
+
+	fclose(file);
+	curl_easy_cleanup(curl);
+	return 0;
+}
+
+
+char* get_default_filepath(char *url) {
+    char *filepath = strdup(url);
+    char *tmp = strtok(filepath, "/");
+    while(tmp != NULL) {
+        filepath = tmp;
+        tmp = strtok(NULL, "/");
+    }
+    return filepath;
+}
+
+void
+usage(){
+	puts("usage: <url> <file path>(optional, default is ./<filename on url>)");
+	exit(0);
+}
+
+

avtomat/makefile

+INCS=-lcurl
+CFLAGS=-fdiagnostics-color=always -Wall -Wextra -Wpedantic -Wformat -Wshadow -Wunused -Wconversion -Wsign-conversion ${INCS} -O3 -g
+CC=gcc
+
+all:
+	$(CC) $(CFLAGS) main.c -o downloader
+
+clear:
+	rm downloader
+