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Make downloads interruptable

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This commit is contained in:
Eelco Dolstra 2015-05-05 14:39:48 +02:00
parent deb8668a0e
commit 35d30d67eb
1 changed files with 9 additions and 0 deletions
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9
src/libexpr/download.cc
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@ -54,6 +54,11 @@ struct Curl
return realSize; return realSize;
} }
static int progressCallback(void * clientp, double dltotal, double dlnow, double ultotal, double ulnow)
{
return _isInterrupted;
}
Curl() Curl()
{ {
requestHeaders = 0; requestHeaders = 0;
@ -71,6 +76,9 @@ struct Curl
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, headerCallback); curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, headerCallback);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, (void *) &curl); curl_easy_setopt(curl, CURLOPT_HEADERDATA, (void *) &curl);
curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progressCallback);
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);
} }
~Curl() ~Curl()
@ -98,6 +106,7 @@ struct Curl
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, requestHeaders); curl_easy_setopt(curl, CURLOPT_HTTPHEADER, requestHeaders);
CURLcode res = curl_easy_perform(curl); CURLcode res = curl_easy_perform(curl);
checkInterrupt();
if (res == CURLE_WRITE_ERROR && etag == expectedETag) return false; if (res == CURLE_WRITE_ERROR && etag == expectedETag) return false;
if (res != CURLE_OK) if (res != CURLE_OK)
throw DownloadError(format("unable to download ‘%1%’: %2% (%3%)") throw DownloadError(format("unable to download ‘%1%’: %2% (%3%)")