MeiliSearch/download-latest.sh

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#!/bin/sh
# COLORS
RED='\033[31m'
GREEN='\033[32m'
DEFAULT='\033[0m'
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# GLOBALS
GREP_SEMVER_REGEXP='v\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)$' # i.e. v[number].[number].[number]
# FUNCTIONS
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# semverParseInto and semverLT from https://github.com/cloudflare/semver_bash/blob/master/semver.sh
# usage: semverParseInto version major minor patch special
# version: the string version
# major, minor, patch, special: will be assigned by the function
semverParseInto() {
local RE='[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([0-9A-Za-z-]*\)'
#MAJOR
eval $2=`echo $1 | sed -e "s#$RE#\1#"`
#MINOR
eval $3=`echo $1 | sed -e "s#$RE#\2#"`
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#PATCH
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eval $4=`echo $1 | sed -e "s#$RE#\3#"`
#SPECIAL
eval $5=`echo $1 | sed -e "s#$RE#\4#"`
}
# usage: semverLT version1 version2
semverLT() {
local MAJOR_A=0
local MINOR_A=0
local PATCH_A=0
local SPECIAL_A=0
local MAJOR_B=0
local MINOR_B=0
local PATCH_B=0
local SPECIAL_B=0
semverParseInto $1 MAJOR_A MINOR_A PATCH_A SPECIAL_A
semverParseInto $2 MAJOR_B MINOR_B PATCH_B SPECIAL_B
if [ $MAJOR_A -lt $MAJOR_B ]; then
return 0
fi
if [ $MAJOR_A -le $MAJOR_B ] && [ $MINOR_A -lt $MINOR_B ]; then
return 0
fi
if [ $MAJOR_A -le $MAJOR_B ] && [ $MINOR_A -le $MINOR_B ] && [ $PATCH_A -lt $PATCH_B ]; then
return 0
fi
if [ "_$SPECIAL_A" == "_" ] && [ "_$SPECIAL_B" == "_" ] ; then
return 1
fi
if [ "_$SPECIAL_A" == "_" ] && [ "_$SPECIAL_B" != "_" ] ; then
return 1
fi
if [ "_$SPECIAL_A" != "_" ] && [ "_$SPECIAL_B" == "_" ] ; then
return 0
fi
if [ "_$SPECIAL_A" < "_$SPECIAL_B" ]; then
return 0
fi
return 1
}
# Returns the tag of the latest stable release (in terms of semver and not of release date)
get_latest() {
temp_file='temp_file' # temp_file needed because the grep would start before the download is over
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curl -s 'https://api.github.com/repos/meilisearch/MeiliSearch/releases' > "$temp_file" || return 1
releases=$(cat "$temp_file" | \
grep -E "tag_name|draft|prerelease" \
| tr -d ',"' | cut -d ':' -f2 | tr -d ' ')
# Returns a list of [tag_name draft_boolean prerelease_boolean ...]
# Ex: v0.10.1 false false v0.9.1-rc.1 false true v0.9.0 false false...
i=0
latest=""
current_tag=""
for release_info in $releases; do
if [ $i -eq 0 ]; then # Cheking tag_name
if echo "$release_info" | grep -q "$GREP_SEMVER_REGEXP"; then # If it's not an alpha or beta release
current_tag=$release_info
else
current_tag=""
fi
i=1
elif [ $i -eq 1 ]; then # Checking draft boolean
if [ "$release_info" = "true" ]; then
current_tag=""
fi
i=2
elif [ $i -eq 2 ]; then # Checking prerelease boolean
if [ "$release_info" = "true" ]; then
current_tag=""
fi
i=0
if [ "$current_tag" != "" ]; then # If the current_tag is valid
if [ "$latest" = "" ]; then # If there is no latest yet
latest="$current_tag"
else
semverLT $current_tag $latest # Comparing latest and the current tag
if [ $? -eq 1 ]; then
latest="$current_tag"
fi
fi
fi
fi
done
rm -f "$temp_file"
echo $latest
}
# Gets the OS by setting the $os variable
# Returns 0 in case of success, 1 otherwise.
get_os() {
os_name=$(uname -s)
case "$os_name" in
'Darwin')
os='macos'
;;
'Linux')
os='linux'
;;
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'MINGW'*)
os='windows'
;;
*)
return 1
esac
return 0
}
# Gets the architecture by setting the $archi variable
# Returns 0 in case of success, 1 otherwise.
get_archi() {
architecture=$(uname -m)
case "$architecture" in
'x86_64' | 'amd64')
archi='amd64'
;;
'aarch64')
archi='armv8'
;;
*)
return 1
esac
return 0
}
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success_usage() {
printf "$GREEN%s\n$DEFAULT" "MeiliSearch binary successfully downloaded as '$BINARY_NAME' file."
echo ''
echo 'Run it:'
echo ' $ ./meilisearch'
echo 'Usage:'
echo ' $ ./meilisearch --help'
}
failure_usage() {
printf "$RED%s\n$DEFAULT" 'ERROR: MeiliSearch binary is not available for your OS distribution or your architecture yet.'
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echo ''
echo 'However, you can easily compile the binary from the source files.'
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echo 'Follow the steps at the page ("Source" tab): https://docs.meilisearch.com/learn/getting_started/installation.html'
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}
# MAIN
latest="$(get_latest)"
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if ! get_os; then
failure_usage
exit 1
fi
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if ! get_archi; then
failure_usage
exit 1
fi
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echo "Downloading MeiliSearch binary $latest for $os, architecture $archi..."
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case "$os" in
'windows')
release_file="meilisearch-$os-$archi.exe"
BINARY_NAME='meilisearch.exe'
;;
*)
release_file="meilisearch-$os-$archi"
BINARY_NAME='meilisearch'
esac
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link="https://github.com/meilisearch/MeiliSearch/releases/download/$latest/$release_file"
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curl -OL "$link"
mv "$release_file" "$BINARY_NAME"
chmod 744 "$BINARY_NAME"
success_usage