feat: initial commit

.gitignore

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+*.tar
+*.tar.gz
+*.asc
+pkg/

Makefile

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+NAME=ces-shell-utils
+VERSION=0.1.0
+
+DIRS=bin
+INSTALL_DIRS=`find $(DIRS) -type d 2>/dev/null`
+INSTALL_FILES=`find $(DIRS) -type f 2>/dev/null`
+DOC_FILES=*.md *.txt
+
+PKG_DIR=pkg
+PKG_NAME=$(NAME)-$(VERSION)
+PKG=$(PKG_DIR)/$(PKG_NAME).tar.gz
+SIG=$(PKG_DIR)/$(PKG_NAME).asc
+
+PREFIX?=$(HOME)/.local
+DOC_DIR=$(PREFIX)/share/doc/$(PKG_NAME)
+
+pkg:
+	mkdir -p $(PKG_DIR)
+
+$(PKG): pkg
+	git archive --output=$(PKG) --prefix=$(PKG_NAME)/ HEAD
+
+build: $(PKG)
+
+$(SIG): $(PKG)
+	gpg --sign --detach-sign --armor $(PKG)
+
+sign: $(SIG)
+
+clean:
+	rm -f $(PKG) $(SIG)
+
+all: $(PKG) $(SIG)
+
+test:
+
+tag:
+	git tag v$(VERSION)
+	git push --tags
+
+release: $(PKG) $(SIG) tag
+
+install:
+	for dir in $(INSTALL_DIRS); do mkdir -p $(PREFIX)/$$dir; done
+	for file in $(INSTALL_FILES); do cp $$file $(PREFIX)/$$file; done
+	mkdir -p $(DOC_DIR)
+	cp -r $(DOC_FILES) $(DOC_DIR)/
+
+uninstall:
+	for file in $(INSTALL_FILES); do rm -rf $(PREFIX)/$$file; done
+	rm -rf $(DOC_DIR)
+
+.PHONY: build sign clean test tag release install uninstall all

README.md

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+# CES Shell Utils
+
+Home for Collateral Engineering Services utility shell scripts.
+
+## Installation
+
+## Commands
+
+### `json-to-env`
+
+```
+USAGE
+
+	json-to-env [-hx] [-f] <file>
+	json-to-env [-hx] [-f] -
+	json-to-env [-hx]
+
+DESCRIPTION
+
+	Converts a JSON file into environment variables.
+	Each \`key\`: \`value\` pair will be converted to a \`key=\$value\` statement.
+	If <file> is not provided or is \`-\`, it will read from stdin.
+
+OPTIONS
+	-h, --help
+        Displays this help text.
+	-f, --file
+		The path to the file to read from.
+	-x, --export
+        Prepend 'export' to the generated environment variables.
+```
+
+Examples:
+
+```bash
+# Regular usage
+json-to-env /path/to/file.json
+cat /path/to/file.json | json-to-env
+
+# With `export`:
+json-to-env -x /path/to/file.json
+
+# -f param is optional:
+json-to-env -f /path/to/file.json # is equivalent to
+json-to-env /path/to/file.json
+
+# Don't have a file? No problem:
+json-to-env <<< "{"VAR":"VALUE"}" # outputs VAR=VALUE
+```

bin/json-to-env

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+#!/usr/bin/env bash
+
+usage() {
+	cat >&2 << EOF
+USAGE
+
+	$0 [-x] [-f] <file>
+	$0 [-x] [-f] -
+	$0 [-x]
+
+DESCRIPTION
+
+	Converts a JSON file into environment variables.
+	Each \`key\`: \`value\` pair will be converted to a \`key=\$value\` statement.
+	If <file> is not provided or is \`-\`, it will read from stdin.
+
+OPTIONS
+
+	-h, --help
+        Displays this help text.
+	-f, --file
+		The path to the file to read from.
+	-x, --export
+        Prepend 'export' to the generated environment variables.
+EOF
+}
+
+json-to-env() {
+	local options
+	local file
+	local exports=false
+
+	options=$(getopt -o hxf: -l help,export,file: --name "$0" -- "$@")
+	eval set -- "$options"
+
+	while true; do
+		case "$1" in
+			-h|--help)
+				usage
+				exit 0
+				;;
+			-x|--export)
+				exports=true
+				;;
+			-f|--file)
+				shift
+				file="$1"
+				;;
+			--)
+				shift
+				break
+				;;
+		esac
+		shift
+	done
+
+	# If -f/--file is not used, <file> is the first positional argument
+	# If it's not given or empty, then the script should read from stdin
+	file="${file:-${1:-/dev/stdin}}"
+	local output=$(
+		jq -r 'to_entries | map(.key + "|" + (.value | tostring)) | .[]' "$file" |
+			while IFS='|' read -r key value; do
+				# If it's an address, make sure it's checksummed
+				if [[ "$value" =~ '^0x[0-9a-fA-F]{40}$' ]]; then
+					PAIR="${key}=$(seth --to-checksum-address "${value}")"
+				else
+					PAIR="${key}=${value}"
+				fi
+				echo "${PAIR}"
+			done
+	)
+
+	for pair in $output; do
+		if [ "$exports" == 'true' ]; then
+			echo "export ${pair}"
+		else
+			echo "${pair}"
+		fi
+	done
+}
+
+# Executes the function if it's been called as a script.
+# This will evaluate to false if this script is sourced by other script.
+if [ "$0" = "$BASH_SOURCE" ]; then
+	set -eo pipefail
+	json-to-env $@
+fi
+