mirror of
https://github.com/rangermix/TwitchDropsMiner.git
synced 2026-05-29 16:39:37 +00:00
75 lines
2.5 KiB
Bash
Executable File
75 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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# get_previous_version.sh - Extract the previous version from git history
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# Usage: get_previous_version.sh <version>
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#
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# Arguments:
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# version: The current semver version (e.g., 1.2.3 or 2.0.0-rc.1)
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#
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# Output:
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# Prints the previous version to stdout
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# Returns exit code 0 on success, non-zero on failure
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#
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# This script:
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# 1. Finds the commit that introduced the specified version
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# 2. Gets the parent commit of that version change
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# 3. Extracts the version from the parent commit
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# 4. Outputs the previous version
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set -euo pipefail
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# Display usage information
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usage() {
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echo "Usage: $0 <version>" >&2
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echo "" >&2
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echo "Extracts the previous version from git history before the specified version." >&2
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echo "" >&2
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echo "Arguments:" >&2
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echo " version: The current semver version (e.g., 1.2.3 or 2.0.0-rc.1)" >&2
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echo "" >&2
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echo "Examples:" >&2
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echo " $0 1.2.3 # Get version before 1.2.3" >&2
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echo " $0 2.0.0-rc.1 # Get version before 2.0.0-rc.1" >&2
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exit 1
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}
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# Check if version argument is provided
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if [ "$#" -ne 1 ]; then
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echo "Error: Version argument required" >&2
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usage
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fi
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VERSION="$1"
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# Get the git history of version.py, find the commit that introduced $VERSION
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CURRENT_VERSION_COMMIT=$(git log --all --format="%H" --follow -S "__version__ = \"$VERSION\"" -- src/version.py | head -1)
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if [ -z "$CURRENT_VERSION_COMMIT" ]; then
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echo "Error: Could not find commit that set version to $VERSION" >&2
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exit 1
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fi
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# Get the previous commit for version.py
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PREVIOUS_VERSION_COMMIT=$(git log --all --format="%H" --follow "$CURRENT_VERSION_COMMIT^..HEAD" -- src/version.py | grep -A1 "$CURRENT_VERSION_COMMIT" | tail -1 || true)
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# If we can't find a previous commit in that way, try getting the parent commit and extracting version from there
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if [ -z "$PREVIOUS_VERSION_COMMIT" ] || [ "$PREVIOUS_VERSION_COMMIT" = "$CURRENT_VERSION_COMMIT" ]; then
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PREVIOUS_VERSION_COMMIT=$(git rev-parse "$CURRENT_VERSION_COMMIT^" 2>/dev/null || true)
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fi
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if [ -z "$PREVIOUS_VERSION_COMMIT" ]; then
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echo "Error: Could not find previous commit for version.py" >&2
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exit 1
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fi
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# Extract version from that commit
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PREVIOUS_VERSION=$(git show "$PREVIOUS_VERSION_COMMIT:src/version.py" | grep -oP '__version__ = "\K[^"]+' || true)
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if [ -z "$PREVIOUS_VERSION" ]; then
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echo "Error: Could not extract previous version from commit ${PREVIOUS_VERSION_COMMIT:0:7}" >&2
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exit 1
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fi
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# Output the previous version to stdout
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echo "$PREVIOUS_VERSION"
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