28 lines
1.1 KiB
Bash
Executable File
28 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Print an auto-generated nightly version string derived from git history:
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#
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# <last-release-tag>+<commits-since>.g<short-sha> e.g., 26.8.0+14.gb1a2c3d4
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#
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# When no release has been tagged yet, the base is 0.0.0 and the count is the
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# total number of commits:
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#
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# 0.0.0+<total-commits>.g<short-sha> e.g., 0.0.0+57.gb1a2c3d4
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#
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# The `+...` part is SemVer build metadata, so the string stays a valid version
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# and never sorts ahead of the release it is based on. Needs full history and
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# tags (check out with fetch-depth: 0 and fetch-tags: true). Release tags are
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# matched as N.N.N; the moving `nightly` tag is ignored.
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set -euo pipefail
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sha="$(git rev-parse --short=8 HEAD)"
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if desc="$(git describe --tags --long \
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--match '[0-9]*.[0-9]*.[0-9]*' --exclude nightly 2>/dev/null)"; then
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# desc is <tag>-<n>-g<hash>; the tag itself has no '-', so strip from the right.
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rest="${desc%-g*}" # <tag>-<n>
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n="${rest##*-}" # <n>
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tag="${rest%-*}" # <tag>
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echo "${tag}+${n}.g${sha}"
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else
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n="$(git rev-list --count HEAD)"
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echo "0.0.0+${n}.g${sha}"
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fi
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