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76 lines
2.1 KiB
Bash
76 lines
2.1 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2024-09-21 18:57:40 +0100 (Sat, 21 Sep 2024)
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#
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# https///github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090,SC1091
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Compares two files vs a line count diff threshold to determine if they are radically different
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Used to avoid overwriting files which are not mere updates but completely different files
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The max_line_diff threshold is 100 is not specified
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Used by the following scripts to avoid overwriting configs in adjacent repos:
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../cicd/sync_ci_to_adjacent_repos.sh
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../cicd/sync_configs_to_adjacent_repos.sh
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to avoid overwriting master templates in the Templates repo with CI/CD configs from this repo
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If QUIET environment variable is set to any value then doesn't print anything, to not pollute logs for usage in above scripts
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="<file1> <file2> [<max_line_diff>]"
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help_usage "$@"
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min_args 2 "$@"
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file1="$1"
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file2="$2"
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line_threshold="${3:-100}"
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if [ -n "${QUIET:-}" ]; then
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timestamp(){
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:
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}
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fi
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timestamp "Comparing File 1: $file1"
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timestamp "Comparing File 2: $file2"
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timestamp "Threshold for line difference: $line_threshold"
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diff_line_count=$(diff -U 0 "$file1" "$file2" | grep -cE '^[+-]' || :)
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timestamp "Total Number of Diff Lines: $diff_line_count"
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if [ "$diff_line_count" -ge "$line_threshold" ]; then
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timestamp "Files '$file1' and '$file2' are radically different with $diff_line_count differing lines >= $line_threshold threshold"
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timestamp "Exit: 1"
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exit 1
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else
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timestamp "Files '$file1' and '$file2' are not radically different with only $diff_line_count differing lines < $line_threshold threshold"
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timestamp "Exit: 0"
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fi
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