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re3/printHash.sh

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#!/usr/bin/env sh
if [ -z "${1}" ]
then
printf "%s\n" "Input the path to the file for writing the commit hash to."
else
printf "%s" "#define GIT_SHA1 \"" > $1
if (command -v "git" >/dev/null) then
git rev-parse --short HEAD | tr -d '\n' >> $1
fi
printf "%s\n" "\"" >> $1
printf "%s\n" "const char* g_GIT_SHA1 = GIT_SHA1;" >> $1
fi