Claude Code Statusline

statusline.sh

#!/bin/bash

# Read JSON input from stdin
input=$(cat)

# Extract values using jq
MODEL=$(echo "$input" | jq -r '.model.display_name')
CONTEXT_SIZE=$(echo "$input" | jq -r '.context_window.context_window_size')
USAGE=$(echo "$input" | jq '.context_window.current_usage')
CWD=$(echo "$input" | jq -r '.cwd')

# --- Catppuccin Mocha palette (ANSI 24-bit colors) ---
# peach=#fab387  yellow=#f9e2af  green=#a6e3a1  red=#f38ba8  sapphire=#74c7ec  crust=#11111b
FG_CRUST="\033[38;2;17;17;27m"
BG_PEACH="\033[48;2;250;179;135m"
BG_YELLOW="\033[48;2;249;226;175m"
BG_GREEN="\033[48;2;166;227;161m"
BG_RED="\033[48;2;243;139;168m"
BG_SAPPHIRE="\033[48;2;116;199;236m"
FG_PEACH="\033[38;2;250;179;135m"
FG_YELLOW="\033[38;2;249;226;175m"
FG_GREEN="\033[38;2;166;227;161m"
FG_RED="\033[38;2;243;139;168m"
FG_SAPPHIRE="\033[38;2;116;199;236m"
RESET="\033[0m"

SEP=""  # Powerline right-arrow (U+E0B0)

# --- Directory (truncated to last 2 parts, like Starship) ---
HOME_REPLACED="${CWD/#$HOME/~}"
IFS='/' read -ra PARTS <<< "$HOME_REPLACED"
NUM_PARTS=${#PARTS[@]}
if [ "$NUM_PARTS" -le 2 ]; then
    SHORT_DIR="$HOME_REPLACED"
else
    SHORT_DIR="…/${PARTS[$((NUM_PARTS-2))]}/${PARTS[$((NUM_PARTS-1))]}"
fi

# --- Git branch and richer status ---
IN_GIT=false
GIT_TEXT=""
if git -C "$CWD" rev-parse --git-dir >/dev/null 2>&1; then
    IN_GIT=true
    BRANCH=$(git -C "$CWD" symbolic-ref --short HEAD 2>/dev/null || git -C "$CWD" rev-parse --short HEAD 2>/dev/null)

    STAGED=$(git -C "$CWD" diff --cached --name-only 2>/dev/null | wc -l | tr -d ' ')
    MODIFIED=$(git -C "$CWD" diff --name-only 2>/dev/null | wc -l | tr -d ' ')
    UNPUSHED=$(git -C "$CWD" rev-list --no-walk --count @{u}..HEAD 2>/dev/null || echo 0)

    GIT_TEXT=" ${BRANCH}"
    [ "$STAGED" -gt 0 ]    && GIT_TEXT="${GIT_TEXT} +${STAGED}"
    [ "$MODIFIED" -gt 0 ]  && GIT_TEXT="${GIT_TEXT} ~${MODIFIED}"
    [ "$UNPUSHED" -gt 0 ]  && GIT_TEXT="${GIT_TEXT} ↑${UNPUSHED}"
    GIT_TEXT="${GIT_TEXT} "
fi

# --- Context window ---
if [ "$USAGE" != "null" ]; then
    CURRENT_TOKENS=$(echo "$USAGE" | jq '.input_tokens + .output_tokens + .cache_creation_input_tokens + .cache_read_input_tokens')
    PERCENT_REAL=$(echo "scale=0; ($CURRENT_TOKENS * 100 + $CONTEXT_SIZE / 2) / $CONTEXT_SIZE" | bc)
else
    PERCENT_REAL=10
fi

# Dynamic context background and matching foreground
# Green: <60%  Yellow: 60-79%  Red: 80%+
if [ "$PERCENT_REAL" -ge 80 ]; then
    BG_CTX="$BG_RED"
    FG_CTX="$FG_RED"
elif [ "$PERCENT_REAL" -ge 60 ]; then
    BG_CTX="$BG_YELLOW"
    FG_CTX="$FG_YELLOW"
else
    BG_CTX="$BG_GREEN"
    FG_CTX="$FG_GREEN"
fi

# --- Assemble status line with Powerline separators ---
# Segment order: dir (peach) → git (yellow) → model (sapphire) → ctx (dynamic)
# Each separator: FG = prev segment BG color, BG = next segment BG color

if $IN_GIT; then
    # dir → git → model → ctx
    printf "${BG_PEACH}${FG_CRUST}  ${SHORT_DIR} "
    printf "${BG_YELLOW}${FG_PEACH}${SEP}"
    printf "${FG_CRUST}${GIT_TEXT}"
    printf "${BG_SAPPHIRE}${FG_YELLOW}${SEP}"
    printf "${FG_CRUST}  ${MODEL} "
    printf "${BG_CTX}${FG_SAPPHIRE}${SEP}"
    printf "${FG_CRUST}  ${PERCENT_REAL}%% ctx "
    printf "${RESET}${FG_CTX}${SEP}${RESET}"
else
    # dir → model → ctx
    printf "${BG_PEACH}${FG_CRUST}  ${SHORT_DIR} "
    printf "${BG_SAPPHIRE}${FG_PEACH}${SEP}"
    printf "${FG_CRUST}  ${MODEL} "
    printf "${BG_CTX}${FG_SAPPHIRE}${SEP}"
    printf "${FG_CRUST}  ${PERCENT_REAL}%% ctx "
    printf "${RESET}${FG_CTX}${SEP}${RESET}"
fi

printf "\n"