From 3ee110f82c8da10e1eba7fa82466c23f01bc2fa1 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Thu, 24 Aug 2017 22:03:19 +0100
Subject: [PATCH] Download branch snapshot from cron jobs

---
 .travis.yml | 34 +++++++++++++++++++++++++++++-----
 1 file changed, 29 insertions(+), 5 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 6a88164..3d26333 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,16 +32,40 @@ matrix:
             USER_CONFIG="using clang : : clang++ -Werror --std=c++11 -D_HAS_AUTO_PTR_ETC=0 ;"
 
 before_script:
+    - export BOOST_VERSION=1.65.0
+    - export BOOST_FILENAME=boost_1_65_0
+    - export BOOST_ROOT=${HOME}/boost
     - cd ${TRAVIS_BUILD_DIR}
     - touch Jamroot.jam
     - cd $HOME
     - echo $USER_CONFIG > ~/user-config.jam
     - cat ~/user-config.jam
-    - wget -O boost.tar.bz2 https://dl.bintray.com/boostorg/release/1.65.0/source/boost_1_65_0.tar.bz2
-    - tar -xjf boost.tar.bz2
-    - mv boost_1_* boost
-    - rm -r boost/boost/functional
+    - |
+        mkdir $HOME/download
+        mkdir $HOME/extract
+        cd $HOME/download
+        if [ "$TRAVIS_EVENT_TYPE" == "cron" ]
+        then
+            if [ "$TRAVIS_BRANCH" == "master" ]
+            then
+                snapshot_branch=master
+            else
+                snapshot_branch=develop
+            fi
+            download_url=$(curl https://api.bintray.com/packages/boostorg/$snapshot_branch/snapshot/files |
+                    python -c "import os.path, sys, json; x = json.load(sys.stdin); print '\n'.join(a['path'] for a in x if os.path.splitext(a['path'])[1] == '.bz2')" |
+                    head -n 1 |
+                    sed "s/^/http:\/\/dl.bintray.com\/boostorg\/$snapshot_branch\//")
+        else
+            download_url=https://sourceforge.net/projects/boost/files/boost/${BOOST_VERSION}/${BOOST_FILENAME}.tar.bz2/download
+        fi
+        echo "Downloading ${download_url}"
+        wget -O boost.tar.bz2 $download_url
+        cd $HOME/extract
+        tar -xjf $HOME/download/boost.tar.bz2
+        mv * ${BOOST_ROOT}
+    - rm -r ${BOOST_ROOT}/boost/functional
 
 script:
     - cd ${TRAVIS_BUILD_DIR}/test
-    - bjam -q ${BJAM_TOOLSET} include=${HOME}/boost include=${TRAVIS_BUILD_DIR}/include
+    - bjam -q ${BJAM_TOOLSET} include=${BOOST_ROOT} include=${TRAVIS_BUILD_DIR}/include