maurice/snix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Show progress during downloads

Browse source
This commit is contained in:
Eelco Dolstra 2015-10-07 17:31:50 +02:00
parent f08449ccbd
commit 21ecd106ed
2 changed files with 47 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

54
src/libstore/download.cc
View file

@ -6,8 +6,18 @@
#include <curl/curl.h>
#include <iostream>
namespace nix {
double getTime()
{
struct timeval tv;
gettimeofday(&tv, 0);
return tv.tv_sec + (tv.tv_usec / 1000000.0);
}
struct Curl
{
CURL * curl;
@ -16,6 +26,10 @@ struct Curl
struct curl_slist * requestHeaders;
bool showProgress;
double prevProgressTime{0}, startTime{0};
unsigned int moveBack{1};
static size_t writeCallback(void * contents, size_t size, size_t nmemb, void * userp)
{
Curl & c(* (Curl *) userp);
@ -56,11 +70,30 @@ struct Curl
return realSize;
}
static int progressCallback(void * clientp, double dltotal, double dlnow, double ultotal, double ulnow)
int xferInfoCallback(curl_off_t dltotal, curl_off_t dlnow)
{
if (showProgress) {
double now = getTime();
if (prevProgressTime <= now - 1) {
string s = (format(" [%1$.0f/%2$.0f KiB, %3$.1f KiB/s]")
% (dlnow / 1024.0)
% (dltotal / 1024.0)
% (now == startTime ? 0 : dlnow / 1024.0 / (now - startTime))).str();
std::cerr << "\e[" << moveBack << "D" << s;
moveBack = s.size();
std::cerr.flush();
prevProgressTime = now;
}
}
return _isInterrupted;
}
static int xferInfoCallback_(void * userp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
{
Curl & c(* (Curl *) userp);
return c.xferInfoCallback(dltotal, dlnow);
}
Curl()
{
requestHeaders = 0;
@ -79,8 +112,11 @@ struct Curl
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, headerCallback);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, (void *) &curl);
curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progressCallback);
curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, xferInfoCallback_);
curl_easy_setopt(curl, CURLOPT_XFERINFODATA, (void *) &curl);
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);
showProgress = isatty(STDERR_FILENO);
}
~Curl()
@ -107,7 +143,16 @@ struct Curl
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, requestHeaders);
if (showProgress) {
std::cerr << (format("downloading ‘%1%’... ") % url);
std::cerr.flush();
startTime = getTime();
}
CURLcode res = curl_easy_perform(curl);
if (showProgress)
//std::cerr << "\e[" << moveBack << "D\e[K\n";
std::cerr << "\n";
checkInterrupt();
if (res == CURLE_WRITE_ERROR && etag == expectedETag) return false;
if (res != CURLE_OK)
@ -178,11 +223,6 @@ Path downloadFileCached(const string & url, bool unpack)
if (!skip) {
if (storePath.empty())
printMsg(lvlInfo, format("downloading ‘%1%’...") % url);
else
printMsg(lvlInfo, format("checking ‘%1%’...") % url);
try {
auto res = downloadFile(url, expectedETag);