Merge pull request #281 from viktor-ferenczi/setup-faster-download

Improved download and archive extraction speed during setup
hybridgroup · Aug 26, 2018 · 2a7e91b · 2a7e91b
2 parents 641bee8 + 2973cfa
commit 2a7e91b
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diff --git a/README.md b/README.md
@@ -325,7 +325,7 @@ The following commands should do everything to download and install OpenCV 3.4.2
 	chdir %GOPATH%\src\gocv.io\x\gocv
 	win_build_opencv.cmd
 
-It will probably take at least 1 hour to download and build.
+It might take up to one hour.
 
 Last, add `C:\opencv\build\install\x64\mingw\bin` to your System Path.
 

diff --git a/win_build_opencv.cmd b/win_build_opencv.cmd
@@ -1,13 +1,34 @@
+echo off
+
 if not exist "C:\opencv" mkdir "C:\opencv"
 if not exist "C:\opencv\build" mkdir "C:\opencv\build"
 
-powershell -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; Invoke-WebRequest -Uri https://github.com/opencv/opencv/archive/3.4.2.zip -OutFile c:\opencv\opencv-3.4.2.zip"
-powershell -command "Expand-Archive -Path c:\opencv\opencv-3.4.2.zip -DestinationPath c:\opencv"
+echo Downloading OpenCV sources
+echo.
+echo For monitoring the download progress please check the C:\opencv directory.
+echo.
+
+REM This is why there is no progress bar:
+REM https://github.com/PowerShell/PowerShell/issues/2138
+
+echo Downloading: opencv-3.4.2.zip [91MB]
+powershell -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $ProgressPreference = 'SilentlyContinue'; Invoke-WebRequest -Uri https://github.com/opencv/opencv/archive/3.4.2.zip -OutFile c:\opencv\opencv-3.4.2.zip"
+echo Extracting...
+powershell -command "$ProgressPreference = 'SilentlyContinue'; Expand-Archive -Path c:\opencv\opencv-3.4.2.zip -DestinationPath c:\opencv"
 del c:\opencv\opencv-3.4.2.zip /q
+echo.
 
-powershell -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; Invoke-WebRequest -Uri https://github.com/opencv/opencv_contrib/archive/3.4.2.zip -OutFile c:\opencv\opencv_contrib-3.4.2.zip"
-powershell -command "Expand-Archive -Path c:\opencv\opencv_contrib-3.4.2.zip -DestinationPath c:\opencv"
+echo Downloading: opencv_contrib-3.4.2.zip [58MB]
+powershell -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $ProgressPreference = 'SilentlyContinue'; Invoke-WebRequest -Uri https://github.com/opencv/opencv_contrib/archive/3.4.2.zip -OutFile c:\opencv\opencv_contrib-3.4.2.zip"
+echo Extracting...
+powershell -command "$ProgressPreference = 'SilentlyContinue'; Expand-Archive -Path c:\opencv\opencv_contrib-3.4.2.zip -DestinationPath c:\opencv"
 del c:\opencv\opencv_contrib-3.4.2.zip /q
+echo.
+
+echo Done with downloading and extracting sources.
+echo.
+
+echo on
 
 cd C:\opencv\build
 set PATH=%PATH%;C:\Program Files (x86)\CMake\bin;C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin