par-term 0.30.5

Cross-platform GPU-accelerated terminal emulator with inline graphics support (Sixel, iTerm2, Kitty)
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#!/bin/sh
# pt-dl — Download files from remote to local via par-term
#
# Uses iTerm2 OSC 1337 File protocol with inline=0 to trigger
# a native save dialog in par-term.
#
# Usage:
#   pt-dl <file> [file2 ...]
#   cat data | pt-dl --name output.txt
#
# Works over SSH on any remote host. Only requires: base64, wc, printf, cat, basename

set -e

# Detect tmux/screen for passthrough wrapping
_pt_is_tmux() {
    case "$TERM" in
        screen*|tmux*) return 0 ;;
        *) return 1 ;;
    esac
}

# Print escape sequence with optional tmux passthrough
_pt_print_osc() {
    if _pt_is_tmux; then
        printf '\033Ptmux;\033'
    fi
    printf '\033]'
}

_pt_print_st() {
    printf '\007'
    if _pt_is_tmux; then
        printf '\033\\'
    fi
}

# Send a single file via OSC 1337 File protocol
# Args: $1 = filename, stdin = file data
_pt_send_file() {
    _filename="$1"
    _b64name=$(printf '%s' "$_filename" | base64 | tr -d '\n')
    _b64data=$(base64 | tr -d '\n')
    _size=$(printf '%s' "$_b64data" | base64 -d 2>/dev/null | wc -c | tr -d ' ')

    _pt_print_osc
    printf '1337;File=name=%s;size=%s;inline=0:' "$_b64name" "$_size"
    printf '%s' "$_b64data"
    _pt_print_st

    printf '%s (%s bytes) sent for download\n' "$_filename" "$_size" >&2
}

# Parse arguments
_stdin_mode=0
_name=""

if [ $# -eq 0 ]; then
    # Check if stdin is a pipe
    if [ -t 0 ]; then
        echo "Usage: pt-dl <file> [file2 ...]" >&2
        echo "       cat data | pt-dl --name output.txt" >&2
        exit 1
    fi
    echo "Error: stdin mode requires --name flag" >&2
    exit 1
fi

# Check for --name flag (stdin mode)
if [ "$1" = "--name" ]; then
    if [ -z "$2" ]; then
        echo "Error: --name requires a filename argument" >&2
        exit 1
    fi
    _name="$2"
    _stdin_mode=1
    shift 2
fi

if [ "$_stdin_mode" -eq 1 ]; then
    # Read from stdin
    _pt_send_file "$_name"
else
    # Process each file argument
    for _file in "$@"; do
        if [ ! -f "$_file" ]; then
            echo "Error: '$_file' is not a regular file" >&2
            continue
        fi
        if [ ! -r "$_file" ]; then
            echo "Error: '$_file' is not readable" >&2
            continue
        fi
        _basename=$(basename "$_file")
        _pt_send_file "$_basename" < "$_file"
    done
fi