ENH: Add feedstock updater script

Author: effigies

tools/feedstock.sh

@@ -0,0 +1,108 @@
+#!/bin/bash
+#
+# Script to submit and update feedstock PRs from CircleCI
+#
+# Requires the following environment variables
+#
+#   GITHUB_USER:                The name of your user or bot
+#   CIRCLE_PROJECT_USERNAME:    User under which repository is found
+#   CIRCLE_PROJECT_REPONAME:    Name of repository
+#
+#   One of:
+#     GITHUB_PASSWORD:  Password for user or bot
+#     GITHUB_TOKEN:     Pre-established token for user or bot
+#
+#   One of:
+#     CIRCLE_BRANCH:    Name of release branch (rel/<version>) 
+#     CIRCLE_TAG:       Name of release tag (<version>)
+#
+# Depends:
+#
+#   bash        https://www.gnu.org/software/bash/
+#   git         https://git-scm.com/
+#   hub         https://hub.github.com/
+#   sha256sum   https://www.gnu.org/software/coreutils/coreutils.html
+#
+# 2018 Chris Markiewicz
+
+set -x
+
+REPO=${1:-$CIRCLE_PROJECT_REPONAME}
+FEEDSTOCK=${2:-$REPO-feedstock}
+
+SRCREPO=$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME
+
+# Release branches should be of the form 'rel/<version>'
+# The corresponding tag should be the bare '<version>' strings
+if [[ -n "$CIRCLE_TAG" ]]; then
+    RELEASE=true
+    REF="$CIRCLE_TAG"
+    BRANCH="rel/$REF"
+    VERSION="$REF"
+    COMMIT_MSG="REL: $VERSION"
+    PR_TITLE="REL: $VERSION"
+else
+    RELEASE=false
+    REF="$CIRCLE_BRANCH"
+    BRANCH=$REF
+    VERSION="${REF#rel/}"
+    COMMIT_MSG="TEST: $BRANCH"
+    PR_TITLE="[WIP] REL: $VERSION"
+fi
+
+# Clean working copy
+TMP=`mktemp -d`
+hub clone conda-forge/$FEEDSTOCK $TMP/$FEEDSTOCK
+pushd $TMP/$FEEDSTOCK
+
+# Get user fork, move to a candidate release branch, detecting if new branch
+hub fork
+git fetch --all
+if git checkout -t $GITHUB_USER/$BRANCH; then
+    NEW_PR=false
+else
+    NEW_PR=true
+    git checkout -b $BRANCH origin/master
+fi
+
+# Calculate hash
+SHA256=`curl -sSL https://github.com/$SRCREPO/archive/$BRANCH.tar.gz | sha256sum | cut -d\  -f 1`
+
+# Set version, hash, and reset build number
+# Use ~ for separator, as it's an invalid character in a git-ref
+sed -i '' \
+    -e 's~^\({% set version = "\).*\(" %}\)$~'"\1$REF\2~" \
+    -e 's/^\({% set sha256 = "\).*\(" %}\)$/'"\1$SHA256\2/" \
+    -e 's/^\( *number:\) .*$/\1 0/' \
+    recipe/meta.yaml
+
+# Bump branch
+git add recipe/meta.yaml
+git commit -m "$COMMIT_MSG"
+git push -u $GITHUB_USER $BRANCH
+
+if $NEW_PR; then
+    hub pull-request -b conda-forge:master -F - <<END;
+$PR_TITLE
+
+Updating feedstock to release branch
+
+#### Environment
+
+| Variable | Value |
+|----------|-------|
+| `CIRCLE_PROJECT_USERNAME` | $CIRCLE_PROJECT_USERNAME |
+| `CIRCLE_PROJECT_REPONAME` | $CIRCLE_PROJECT_REPONAME |
+| `CIRCLE_BRANCH` | $CIRCLE_BRANCH |
+| `CIRCLE_TAG` | $CIRCLE_TAG |
+
+#### Calculated values
+
+| URL | https://github.com/$SRCREPO/archive/$BRANCH.tar.gz |
+| SHA256 | $SHA256 |
+END;
+fi
+
+# Remove working copy
+popd
+rm -rf $TMP/$FEEDSTOCK