update-formula.sh

#!/bin/bash

# Full URL looks like this:
# /~https://github.com/pachyderm/pachyderm/releases/download/v1.0.1-dirty/pachctl_v1.0.1-dirty_darwin_amd64.zip
GITHUB_HOSTING_ROOT=/~https://github.com/pachyderm/pachyderm/releases/download
MACOS="darwin"
LINUX="linux"
ARM64="arm64"
AMD64="amd64"
ZIP=".zip"
TGZ=".tar.gz"

MACOS_AMD64_BIN_SUFFIX="_${MACOS}_${AMD64}${ZIP}"
MACOS_ARM64_BIN_SUFFIX="_${MACOS}_${ARM64}${ZIP}"
LINUX_AMD64_BIN_SUFFIX="_${LINUX}_${AMD64}${TGZ}"
LINUX_ARM64_BIN_SUFFIX="_${LINUX}_${ARM64}${TGZ}"

# e.g. convert from 1.3.4 -> 1.3
MAJOR_MINOR=`echo $VERSION | cut -f -2 -d "."`
# e.g. convert from 1.3 -> 13
MAJOR_MINOR_SQUASHED=`echo $MAJOR_MINOR | sed 's/\.//g'`

export URL_PREFIX="${GITHUB_HOSTING_ROOT}/v${VERSION}/pachctl_${VERSION}"

export MACOS_ARM64_URL="${URL_PREFIX}${MACOS_ARM64_BIN_SUFFIX}"
export MACOS_AMD64_URL="${URL_PREFIX}${MACOS_AMD64_BIN_SUFFIX}"
export LINUX_ARM64_URL="${URL_PREFIX}${LINUX_ARM64_BIN_SUFFIX}"
export LINUX_AMD64_URL="${URL_PREFIX}${LINUX_AMD64_BIN_SUFFIX}"

# This should check for errors.
export MACOS_ARM64_SHA=$(curl -Ls $MACOS_ARM64_URL | sha256sum | cut -d' ' -f 1)
export MACOS_AMD64_SHA=$(curl -Ls $MACOS_AMD64_URL | sha256sum | cut -d' ' -f 1)
export LINUX_ARM64_SHA=$(curl -Ls $LINUX_ARM64_URL | sha256sum | cut -d' ' -f 1)
export LINUX_AMD64_SHA=$(curl -Ls $LINUX_AMD64_URL | sha256sum | cut -d' ' -f 1)

export PACHCTL_CLASSNAME="PachctlAT${MAJOR_MINOR_SQUASHED}"

export FORMULA_FILENAME="pachctl@${MAJOR_MINOR}.rb"

# Calculate an integer from the version string. The factor between the
# multipliers should be 10^i, where is the number of digits of distinct versions
# each part of the string can have. For example, if you wanted to support 1000
# values for each portion of the string (e.g. 5.47.195), the factors would be
# 1000 and 1000000 (10^3), instead of 100 and 10000. In our case, we only need
# to support 0 through 99.
VERSION_INT=$(awk -F. '{ print ($1*10000)+($2*100)+$3 }' <<< $VERSION)

# The following scripts are just HEREDOCs catted to a file, to use
# Bash's variable interpolation functionality as a basic templating
# system. pachctl-old.rb.sh is necessary to support older, pre-ARM
# formulas, and it's easier to use a separate bash script instead of
# trying to contort the HEREDOC.
if [[ $VERSION_INT -lt 20309 ]]; then
  /bin/bash pachctl-old.rb.sh
else
  /bin/bash pachctl.rb.sh
fi