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simonsmith/git-info.sh

Created July 4, 2025 13:33
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  1. simonsmith created this gist Jul 4, 2025.
    66 changes: 66 additions & 0 deletions git-info.sh
    View file
    Original file line number Diff line number Diff line change
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    #!/bin/bash

    # Function to escape JSON strings
    escape_json() {
    echo "$1" | sed 's/\\/\\\\/g; s/"/\\"/g' | sed ':a;N;$!ba;s/\n/\\n/g'
    }

    # Get git information
    BRANCH=$(git symbolic-ref HEAD 2>/dev/null | sed 's/refs\/heads\///' || echo "unknown")
    COMMIT_ID=$(git rev-parse HEAD 2>/dev/null || echo "unknown")
    COMMIT_USER_NAME=$(git log -1 --pretty=format:%an 2>/dev/null || echo "unknown")
    COMMIT_USER_EMAIL=$(git log -1 --pretty=format:%ae 2>/dev/null || echo "unknown")
    COMMIT_MESSAGE_FULL=$(git log -1 --pretty=format:%B 2>/dev/null || echo "unknown")
    COMMIT_MESSAGE_SHORT=$(git log -1 --pretty=format:%s 2>/dev/null || echo "unknown")
    COMMIT_TIMESTAMP=$(git log -1 --pretty=format:%ct 2>/dev/null || echo "0")

    # Convert timestamp to readable format (matching Node.js Date.toString() format)
    if [[ "$COMMIT_TIMESTAMP" != "0" ]]; then
    COMMIT_TIME=$(date -d "@$COMMIT_TIMESTAMP" 2>/dev/null || date -r "$COMMIT_TIMESTAMP" 2>/dev/null || echo "unknown")
    else
    COMMIT_TIME="unknown"
    fi

    # Get abbreviated commit ID (first 7 characters)
    if [[ "$COMMIT_ID" != "unknown" ]]; then
    ABBREV_ID="${COMMIT_ID:0:7}"
    else
    ABBREV_ID="unknown"
    fi

    # Get build time in UTC format
    BUILD_TIME=$(date -u '+%a, %d %b %Y %H:%M:%S GMT')

    # Escape all values for JSON
    BRANCH_ESC=$(escape_json "$BRANCH")
    COMMIT_ID_ESC=$(escape_json "$COMMIT_ID")
    ABBREV_ID_ESC=$(escape_json "$ABBREV_ID")
    COMMIT_USER_NAME_ESC=$(escape_json "$COMMIT_USER_NAME")
    COMMIT_USER_EMAIL_ESC=$(escape_json "$COMMIT_USER_EMAIL")
    COMMIT_MESSAGE_FULL_ESC=$(escape_json "$COMMIT_MESSAGE_FULL")
    COMMIT_MESSAGE_SHORT_ESC=$(escape_json "$COMMIT_MESSAGE_SHORT")
    COMMIT_TIME_ESC=$(escape_json "$COMMIT_TIME")
    BUILD_TIME_ESC=$(escape_json "$BUILD_TIME")

    # Output JSON
    cat << EOF
    {
    "buildTime": "$BUILD_TIME_ESC",
    "git": {
    "commit": {
    "message": {
    "full": "$COMMIT_MESSAGE_FULL_ESC",
    "short": "$COMMIT_MESSAGE_SHORT_ESC"
    },
    "time": "$COMMIT_TIME_ESC",
    "id": "$COMMIT_ID_ESC",
    "abbrevId": "$ABBREV_ID_ESC",
    "user": {
    "email": "$COMMIT_USER_EMAIL_ESC",
    "name": "$COMMIT_USER_NAME_ESC"
    }
    },
    "branch": "$BRANCH_ESC"
    }
    }
    EOF