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94 lines
2.4 KiB
94 lines
2.4 KiB
3 years ago
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#!/usr/bin/env bash
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#
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# Copyright (C) 2022, Maxim Lihachev, <envrm@yandex.ru>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation, version 3.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# terraform-mermaid can be used to convert `terraform graph` command output
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# from Graphviz to Mermaid format.
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# TODO: -s simple
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set -e
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set -o errtrace
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\unalias -a
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IFS=$' \t\n'
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show_help() {
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echo -e "$(basename "$0") can be used to convert \`terraform graph' command output from Graphviz to Mermaid format.\n"
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echo -e "USAGE: $(basename "$0") ?-m? ?-d DIRECTION??\n"
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echo -e "Command line arguments:"
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echo -e " -h --help Show this help"
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echo -e " -m --markdown Put the output in triple back quotes (\`\`\`)"
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echo -e " -d --direction Specify the direction of the graph (TB | BT | LR | RL; TB by default)"
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echo
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exit "${1:-0}"
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}
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UNKNOWN_ARGS=()
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while [[ $# -gt 0 ]]; do
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key="$1"
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case $key in
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-h|--help) show_help;;
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-d|--direction) DIRECTION="$2"; shift; shift;;
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-m|--markdown) MARKDOWN="true"; shift;;
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*) UNKNOWN_ARGS+=("$1"); shift;;
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esac
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done
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[ ${#UNKNOWN_ARGS} -gt 0 ] && echo "Unknown parameters: ${UNKNOWN_ARGS[*]}" >&2 && show_help 1
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declare -a MERMAID
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[ -n "$MARKDOWN" ] && MERMAID+=('```mermaid')
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MERMAID+=("graph ${DIRECTION:-TB}")
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GRAPH=$(terraform graph)
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mapfile -t MERMAID_GRAPH < <(
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echo "$GRAPH" \
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| grep -v 'meta\.count' \
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| grep -- '->' \
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| sed -E 's/"//g;
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s/^[[:space:]]*|\\]|\[root\] | \((expand|close)\)//g;
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s!provider.*/!provider:!g;
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s/helm_release/helm/g;
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s/null_resource\.//g;
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s/kubernetes/k8s/g;
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s/ -> / --> /g;
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s/^(.*) --> (.*)$/\2 --> \1/;
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s/(provider:[[:alnum:]_]*)/\1((\1))/;
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s/((var|local).[[:alnum:]_]*)/\1{{\1}}/;
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s/(helm\.[[:alnum:]_]*)/\1{{\1}}/;
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s/(local_file\.[[:alnum:]_]*)/\1>\1]/;
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s/default/defaulṭ/;
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s/class/clasṣ/g;
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/^provider:[[:alnum:]_]*/d;' \
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| sed 's/^/ /'
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)
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MERMAID=("${MERMAID[@]}" "${MERMAID_GRAPH[@]}")
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[ -n "$MARKDOWN" ] && MERMAID+=('```')
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printf "%s\n" "${MERMAID[@]}"
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