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don't need to bundle imgcat anymore as wezterm ships with it
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parent
33549a3142
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2 changed files with 1 additions and 241 deletions
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@ -1,241 +0,0 @@
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#!/usr/bin/env bash
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set -o pipefail
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# tmux requires unrecognized OSC sequences to be wrapped with DCS tmux;
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# <sequence> ST, and for all ESCs in <sequence> to be replaced with ESC ESC. It
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# only accepts ESC backslash for ST. We use TERM instead of TMUX because TERM
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# gets passed through ssh.
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function print_osc() {
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if [[ $TERM == screen* || $TERM == tmux* ]]; then
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printf "\033Ptmux;\033\033]"
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else
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printf "\033]"
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fi
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}
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# More of the tmux workaround described above.
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function print_st() {
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if [[ $TERM == screen* || $TERM == tmux* ]]; then
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printf "\a\033\\"
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else
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printf "\a"
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fi
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}
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function load_version() {
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if [ -z ${IMGCAT_BASE64_VERSION+x} ]; then
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IMGCAT_BASE64_VERSION=$(base64 --version 2>&1)
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export IMGCAT_BASE64_VERSION
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fi
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}
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function b64_encode() {
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load_version
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if [[ $IMGCAT_BASE64_VERSION =~ GNU ]]; then
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# Disable line wrap
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base64 -w0
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else
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base64
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fi
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}
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function b64_decode() {
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load_version
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if [[ $IMGCAT_BASE64_VERSION =~ fourmilab ]]; then
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BASE64ARG=-d
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elif [[ $IMGCAT_BASE64_VERSION =~ GNU ]]; then
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BASE64ARG=-di
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else
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BASE64ARG=-D
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fi
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base64 $BASE64ARG
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}
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# print_image filename inline base64contents print_filename width height preserve_aspect_ratio
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# filename: Filename to convey to client
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# inline: 0 or 1, if set to 1, the file will be displayed inline, otherwise, it will be downloaded
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# base64contents: Base64-encoded contents
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# print_filename: 0 or 1, if set to 1, print the filename after outputting the image
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# width: set output width of the image in character cells, pixels or percent
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# height: set output height of the image in character cells, pixels or percent
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# preserve_aspect_ratio: 0 or 1, if set to 1, fill the specified width and height as much as possible without stretching the image
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# file: Empty string or file type like "application/json" or ".js".
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function print_image() {
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print_osc
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printf "1337;File=inline=%s" "$2"
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printf ";size=%d" $(printf "%s" "$3" | b64_decode | wc -c)
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[ -n "$1" ] && printf ";name=%s" "$(printf "%s" "$1" | b64_encode)"
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[ -n "$5" ] && printf ";width=%s" "$5"
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[ -n "$6" ] && printf ";height=%s" "$6"
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[ -n "$7" ] && printf ";preserveAspectRatio=%s" "$7"
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[ -n "$8" ] && printf ";type=%s" "$8"
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printf ":%s" "$3"
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print_st
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printf '\n'
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[ "$4" == "1" ] && echo "$1"
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has_image_displayed=t
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}
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function error() {
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errcho "ERROR: $*"
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}
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function errcho() {
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echo "$@" >&2
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}
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function show_help() {
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errcho
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errcho "Usage: imgcat [-p] [-n] [-W width] [-H height] [-r] [-s] [-u] [-t file-type] [-f] filename ..."
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errcho " cat filename | imgcat [-W width] [-H height] [-r] [-s]"
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errcho
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errcho "Display images inline in the iTerm2 using Inline Images Protocol"
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errcho
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errcho "Options:"
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errcho
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errcho " -h, --help Display help message"
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errcho " -p, --print Enable printing of filename or URL after each image"
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errcho " -n, --no-print Disable printing of filename or URL after each image"
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errcho " -u, --url Interpret following filename arguments as remote URLs"
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errcho " -f, --file Interpret following filename arguments as regular Files"
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errcho " -t, --type file-type Provides a type hint"
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errcho " -r, --preserve-aspect-ratio When scaling image preserve its original aspect ratio"
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errcho " -s, --stretch Stretch image to specified width and height (this option is opposite to -r)"
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errcho " -W, --width N Set image width to N character cells, pixels or percent (see below)"
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errcho " -H, --height N Set image height to N character cells, pixels or percent (see below)"
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errcho
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errcho " If you don't specify width or height an appropriate value will be chosen automatically."
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errcho " The width and height are given as word 'auto' or number N followed by a unit:"
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errcho " N character cells"
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errcho " Npx pixels"
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errcho " N% percent of the session's width or height"
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errcho " auto the image's inherent size will be used to determine an appropriate dimension"
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errcho
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errcho " If a type is provided, it is used as a hint to disambiguate."
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errcho " The file type can be a mime type like text/markdown, a language name like Java, or a file extension like .c"
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errcho " The file type can usually be inferred from the extension or its contents. -t is most useful when"
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errcho " a filename is not available, such as whe input comes from a pipe."
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errcho
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errcho "Examples:"
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errcho
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errcho " $ imgcat -W 250px -H 250px -s avatar.png"
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errcho " $ cat graph.png | imgcat -W 100%"
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errcho " $ imgcat -p -W 500px -u http://host.tld/path/to/image.jpg -W 80 -f image.png"
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errcho " $ cat url_list.txt | xargs imgcat -p -W 40 -u"
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errcho " $ imgcat -t application/json config.json"
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errcho
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}
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function check_dependency() {
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if ! (builtin command -V "$1" >/dev/null 2>&1); then
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error "missing dependency: can't find $1"
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exit 1
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fi
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}
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# verify that value is in the image sizing unit format: N / Npx / N% / auto
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function validate_size_unit() {
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if [[ ! "$1" =~ ^(:?[0-9]+(:?px|%)?|auto)$ ]]; then
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error "Invalid image sizing unit - '$1'"
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show_help
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exit 1
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fi
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}
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## Main
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if [ -t 0 ]; then
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has_stdin=f
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else
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has_stdin=t
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fi
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# Show help if no arguments and no stdin.
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if [ $has_stdin = f ] && [ $# -eq 0 ]; then
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show_help
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exit
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fi
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check_dependency base64
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check_dependency wc
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file_type=""
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# Look for command line flags.
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while [ $# -gt 0 ]; do
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case "$1" in
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-h | --h | --help)
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show_help
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exit
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;;
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-p | --p | --print)
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print_filename=1
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;;
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-n | --n | --no-print)
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print_filename=0
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;;
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-W | --W | --width)
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validate_size_unit "$2"
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width="$2"
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shift
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;;
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-H | --H | --height)
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validate_size_unit "$2"
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height="$2"
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shift
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;;
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-r | --r | --preserve-aspect-ratio)
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preserve_aspect_ratio=1
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;;
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-s | --s | --stretch)
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preserve_aspect_ratio=0
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;;
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-f | --f | --file)
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has_stdin=f
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is_url=f
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;;
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-u | --u | --url)
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check_dependency curl
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has_stdin=f
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is_url=t
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;;
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-t | --t | --type)
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file_type="$2"
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shift
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;;
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-*)
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error "Unknown option flag: $1"
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show_help
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exit 1
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;;
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*)
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if [ "$is_url" == "t" ]; then
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encoded_image=$(curl -fs "$1" | b64_encode) || {
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error "Could not retrieve image from URL $1, error_code: $?"
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exit 2
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}
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elif [ -r "$1" ]; then
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encoded_image=$(cat "$1" | b64_encode)
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else
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error "imgcat: $1: No such file or directory"
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exit 2
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fi
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has_stdin=f
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print_image "$1" 1 "$encoded_image" "$print_filename" "$width" "$height" "$preserve_aspect_ratio" "$file_type"
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;;
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esac
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shift
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done
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# Read and print stdin
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if [ $has_stdin = t ]; then
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print_image "" 1 "$(cat | b64_encode)" 0 "$width" "$height" "$preserve_aspect_ratio" "$file_type"
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fi
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if [ "$has_image_displayed" != "t" ]; then
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error "No image provided. Check command line options."
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show_help
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exit 1
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fi
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exit 0
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