Custom Claude statusline: `repo-name main 5 +195 -31 Opus 4.5 115k/200k (57%)`

statusline-advanced.sh

#!/bin/bash

# Status line for Claude Code
# Format: repo-name  branch-name  [git-stats]  context-usage%

# Read JSON input
input=$(cat)
current_dir=$(echo "$input" | jq -r '.workspace.current_dir')

# Get repository name (if in a git repo)
if git -C "$current_dir" rev-parse --git-dir >/dev/null 2>&1; then
    # Get the remote URL and extract repo name, or fallback to directory name
    repo_name=$(git -C "$current_dir" config --get remote.origin.url 2>/dev/null | sed -n 's#.*/\([^.]*\)\.git#\1#p')

    # Fallback to directory name if no remote
    if [[ -z "$repo_name" ]]; then
        repo_name=$(basename "$(git -C "$current_dir" rev-parse --show-toplevel 2>/dev/null)")
    fi

    # Get branch name
    branch=$(git -C "$current_dir" symbolic-ref --short HEAD 2>/dev/null || git -C "$current_dir" rev-parse --short HEAD 2>/dev/null)

    # Repository name in vibrant cyan (bold)
    printf "\033[1;36m%s\033[0m" "$repo_name"

    # Branch name in soft purple/magenta
    printf "  \033[35m%s\033[0m" "$branch"

    # Git stats section
    git_stats=""

    # Commits ahead/behind (skip optional locks for performance)
    upstream=$(git -C "$current_dir" rev-parse --abbrev-ref @{upstream} 2>/dev/null)
    if [[ -n "$upstream" ]]; then
        ahead=$(git -C "$current_dir" rev-list --count @{upstream}..HEAD 2>/dev/null)
        behind=$(git -C "$current_dir" rev-list --count HEAD..@{upstream} 2>/dev/null)

        if [[ "$ahead" -gt 0 ]]; then
            git_stats+=" \033[33m↑$ahead\033[0m"  # Yellow for unpushed commits
        fi

        if [[ "$behind" -gt 0 ]]; then
            git_stats+=" \033[36m↓$behind\033[0m"  # Cyan for unpulled commits
        fi
    fi

    # Uncommitted changes stats (staged + unstaged)
    modified_files=$(git -C "$current_dir" diff HEAD --name-only 2>/dev/null | wc -l | tr -d ' ')

    if [[ "$modified_files" -gt 0 ]]; then
        # Get line stats (staged + unstaged)
        stats=$(git -C "$current_dir" diff HEAD --numstat 2>/dev/null | awk '{added+=$1; deleted+=$2} END {print added, deleted}')
        added=$(echo "$stats" | cut -d' ' -f1)
        deleted=$(echo "$stats" | cut -d' ' -f2)

        # Show modified files count in white
        git_stats+=" \033[37m$modified_files\033[0m"

        # Show additions in green if > 0
        if [[ -n "$added" && "$added" -gt 0 ]]; then
            git_stats+=" \033[32m+$added\033[0m"
        fi

        # Show deletions in red if > 0
        if [[ -n "$deleted" && "$deleted" -gt 0 ]]; then
            git_stats+=" \033[31m-$deleted\033[0m"
        fi
    fi

    # Print git stats if any
    if [[ -n "$git_stats" ]]; then
        printf "%b" "$git_stats"
    fi
fi

# Model and context info
model=$(echo "$input" | jq -r '.model.display_name // .model.id // "Claude"')
size=$(echo "$input" | jq -r '.context_window.context_window_size // 200000')
usage=$(echo "$input" | jq '.context_window.current_usage')

if [[ "$usage" != "null" && "$size" != "null" && "$size" -gt 0 ]] 2>/dev/null; then
    input_tokens=$(echo "$usage" | jq -r '.input_tokens // 0')
    cache_creation=$(echo "$usage" | jq -r '.cache_creation_input_tokens // 0')
    cache_read=$(echo "$usage" | jq -r '.cache_read_input_tokens // 0')

    # Total context = all tokens in the context window
    current=$((input_tokens + cache_creation + cache_read))
    pct=$((current * 100 / size))

    # Format as Xk (e.g., 49k, 200k)
    current_k=$((current / 1000))
    size_k=$((size / 1000))

    # Model name in dim white
    printf "  \033[38;5;245m%s\033[0m" "$model"

    # Color-coded tokens: green (<50%), yellow (50-80%), red (>80%)
    if [[ $pct -lt 50 ]]; then
        printf " \033[32m%dk/%dk (%d%%)\033[0m" "$current_k" "$size_k" "$pct"  # Green
    elif [[ $pct -lt 80 ]]; then
        printf " \033[33m%dk/%dk (%d%%)\033[0m" "$current_k" "$size_k" "$pct"  # Yellow
    else
        printf " \033[31m%dk/%dk (%d%%)\033[0m" "$current_k" "$size_k" "$pct"  # Red
    fi
fi

printf "\n"