64 lines
2.1 KiB
Bash
Executable File
64 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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# This script will update emsdk/bazel/WORKSPACE to the latest version of
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# emscripten. It reads emsdk/emscripten-releases-tags.txt to get the latest
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# version number. Then, it downloads the prebuilts for that version and computes
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# the sha256sum for the archive. It then puts all this information into the
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# emsdk/bazel/WORKSPACE file.
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ERR=0
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# Attempt to change to the emsdk root directory
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cd $(dirname $0)/..
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# If the previous command succeeded. We are in the emsdk root. Check to make
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# sure the files and directories we need are present.
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if [[ $? = 0 ]]; then
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if [[ ! -f emscripten-releases-tags.txt ]]; then
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echo "Cannot find emscripten-releases-tags.txt."
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ERR=1
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fi
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if [[ ! -d bazel ]]; then
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echo "Cannot find the bazel directory."
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ERR=1
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elif [[ ! -f bazel/WORKSPACE ]]; then
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echo "Cannot find bazel/WORKSPACE."
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ERR=1
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fi
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else
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ERR=1
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fi
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if [[ $ERR = 1 ]]; then
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echo "Unable to cd into the emsdk root directory."
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exit 1
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fi
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URL1=https://storage.googleapis.com/webassembly/emscripten-releases-builds/linux/
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URL2=/wasm-binaries.tbz2
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# Get the latest version number from emscripten-releases-tag.txt.
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VER=$(grep -oP '(?<=latest\": \")([\d\.]+)(?=\")' \
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emscripten-releases-tags.txt \
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| sed --expression "s/\./\\\./g")
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# Based on the latest version number, get the commit hash for that version.
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HASH=$(grep "${VER}" emscripten-releases-tags.txt \
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| grep -v latest \
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| cut -f4 -d\")
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# Download and compute the sha256sum for the archive with the prebuilts.
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SHA=$(curl "${URL1}${HASH}${URL2}" 2>/dev/null \
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| sha256sum \
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| awk '{print $1}')
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# Get the line number on which the sha256 sum lives for emscripten.
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# This will always be one line after the name of the rule.
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SHALINE=$(($(grep -n 'name = "emscripten"' bazel/WORKSPACE \
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| sed 's/^\([[:digit:]]*\).*$/\1/')+1))
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# Insert the new commit hash into the url.
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sed -i "s!\(${URL1}\)\([[:alnum:]]*\)\(${URL2}\)!\1${HASH}\3!" bazel/WORKSPACE
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# Insert the new version number.
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sed -i "s!\(# emscripten \)\(.*\)!\1${VER}!" bazel/WORKSPACE
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# Insert the new sha256 sum.
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sed -i "${SHALINE}s!\"[[:alnum:]]*\"!\"${SHA}\"!" bazel/WORKSPACE
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echo "Done!"
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