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1.0.0 - Remade structure for GNU Stow
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323
common/.functions
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323
common/.functions
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#!/usr/bin/env bash
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function calc() {
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local result=""
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# ┌─ default (when --mathlib is used) is 20
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result="$( printf "scale=10;%s\n" "$*" | bc --mathlib | tr -d "\\\n" )"
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# remove the tailing "\" and "\n" ─┘
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# (large numbers are printed on multiple lines)
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if [[ "$result" == *.* ]]; then
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# Improve the output for decimal numbers.
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printf "%s" "$result" |
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sed -e "s/^\./0./" # Add "0" for cases like ".5".` \
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-e "s/^-\./-0./" # Add "0" for cases like "-.5".`\
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-e "s/0*$//;s/\.$//" # Remove tailing zeros.
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else
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printf "%s" "$result"
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fi
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printf "\n"
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}
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# Create a new directory and enter it
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function mkd() {
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mkdir -p "$@" && cd "$_";
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}
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# Create a .tar.gz archive, using `zopfli`, `pigz` or `gzip` for compression
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function targz() {
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local tmpFile="${@%/}.tar";
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tar -cvf "${tmpFile}" --exclude=".DS_Store" "${@}" || return 1;
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size=$(
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stat -f"%z" "${tmpFile}" 2> /dev/null; # macOS `stat`
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stat -c"%s" "${tmpFile}" 2> /dev/null; # GNU `stat`
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);
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local cmd="";
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if (( size < 52428800 )) && hash zopfli 2> /dev/null; then
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# the .tar file is smaller than 50 MB and Zopfli is available; use it
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cmd="zopfli";
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else
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if hash pigz 2> /dev/null; then
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cmd="pigz";
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else
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cmd="gzip";
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fi;
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fi;
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echo "Compressing .tar ($((size / 1000)) kB) using \`${cmd}\`…";
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"${cmd}" -v "${tmpFile}" || return 1;
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[ -f "${tmpFile}" ] && rm "${tmpFile}";
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zippedSize=$(
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stat -f"%z" "${tmpFile}.gz" 2> /dev/null; # macOS `stat`
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stat -c"%s" "${tmpFile}.gz" 2> /dev/null; # GNU `stat`
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);
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echo "${tmpFile}.gz ($((zippedSize / 1000)) kB) created successfully.";
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}
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# Determine size of a file or total size of a directory
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function fs() {
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if du -b /dev/null > /dev/null 2>&1; then
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local arg=-sbh;
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else
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local arg=-sh;
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fi
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if [[ -n "$@" ]]; then
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du $arg -- "$@";
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else
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du $arg .[^.]* ./*;
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fi;
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}
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# Use Git’s colored diff when available
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hash git &>/dev/null;
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if [ $? -eq 0 ]; then
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function diff() {
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git diff --no-index --color-words "$@";
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}
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fi;
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# Create a data URL from a file
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function dataurl() {
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local mimeType=$(file -b --mime-type "$1");
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if [[ $mimeType == text/* ]]; then
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mimeType="${mimeType};charset=utf-8";
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fi
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echo "data:${mimeType};base64,$(openssl base64 -in "$1" | tr -d '\n')";
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}
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# Create a git.io short URL
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function gitio() {
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if [ -z "${1}" -o -z "${2}" ]; then
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echo "Usage: \`gitio slug url\`";
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return 1;
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fi;
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curl -i https://git.io/ -F "url=${2}" -F "code=${1}";
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}
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# Start an HTTP server from a directory, optionally specifying the port
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#function server() {
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# local port="${1:-8000}";
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# sleep 1 && open "http://localhost:${port}/" &
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# Set the default Content-Type to `text/plain` instead of `application/octet-stream`
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# And serve everything as UTF-8 (although not technically correct, this doesn’t break anything for binary files)
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# python -c $'import SimpleHTTPServer;\nmap = SimpleHTTPServer.SimpleHTTPRequestHandler.extensions_map;\nmap[""] = "text/plain";\nfor key, value in map.items():\n\tmap[key] = value + ";charset=UTF-8";\nSimpleHTTPServer.test();' "$port";
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#}
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# Start a PHP server from a directory, optionally specifying the port
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# (Requires PHP 5.4.0+.)
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function phpserver() {
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local port="${1:-4000}";
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local ip=$(ipconfig getifaddr en0);
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sleep 1 && open "http://${ip}:${port}/" &
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php -S "${ip}:${port}";
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}
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# Compare original and gzipped file size
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function gz() {
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local origsize=$(wc -c < "$1");
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local gzipsize=$(gzip -c "$1" | wc -c);
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local ratio=$(LC_ALL="en_US" echo "$gzipsize * 100 / $origsize" | bc -l);
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printf "orig: %d bytes\n" "$origsize";
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LC_ALL="en_US" printf "gzip: %d bytes (%2.2f%%)\n" "$gzipsize" "$ratio";
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}
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# Syntax-highlight JSON strings or files
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# Usage: `json '{"foo":42}'` or `echo '{"foo":42}' | json`
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function json() {
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if [ -t 0 ]; then # argument
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python -mjson.tool <<< "$*" | pygmentize -l javascript;
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else # pipe
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python -mjson.tool | pygmentize -l javascript;
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fi;
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}
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# Run `dig` and display the most useful info
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function digga() {
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if alias colourify >/dev/null 2>&1
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then
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shopt -s expand_aliases
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colourify dig +nocmd "$1" any +multiline +noall +answer;
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else
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dig +nocmd "$1" any +multiline +noall +answer;
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fi
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}
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# UTF-8-encode a string of Unicode symbols
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function escape() {
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printf "\\\x%s" $(printf "$@" | xxd -p -c1 -u);
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# print a newline unless we’re piping the output to another program
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if [ -t 1 ]; then
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echo ""; # newline
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fi;
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}
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# Decode \x{ABCD}-style Unicode escape sequences
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function unidecode() {
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perl -e "binmode(STDOUT, ':utf8'); print \"$@\"";
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# print a newline unless we’re piping the output to another program
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if [ -t 1 ]; then
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echo ""; # newline
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fi;
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}
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# Get a character’s Unicode code point
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function codepoint() {
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perl -e "use utf8; print sprintf('U+%04X', ord(\"$@\"))";
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# print a newline unless we’re piping the output to another program
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if [ -t 1 ]; then
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echo ""; # newline
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fi;
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}
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# Show all the names (CNs and SANs) listed in the SSL certificate
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# for a given domain
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function getcertnames() {
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if [ -z "${1}" ]; then
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echo "ERROR: No domain specified.";
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return 1;
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fi;
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local domain="${1}";
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echo "Testing ${domain}…";
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echo ""; # newline
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local tmp=$(echo -e "GET / HTTP/1.0\nEOT" \
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| openssl s_client -connect "${domain}:443" -servername "${domain}" 2>&1);
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if [[ "${tmp}" = *"-----BEGIN CERTIFICATE-----"* ]]; then
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local certText=$(echo "${tmp}" \
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| openssl x509 -text -certopt "no_aux, no_header, no_issuer, no_pubkey, \
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no_serial, no_sigdump, no_signame, no_validity, no_version");
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echo "Common Name:";
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echo ""; # newline
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echo "${certText}" | grep "Subject:" | sed -e "s/^.*CN=//" | sed -e "s/\/emailAddress=.*//";
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echo ""; # newline
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echo "Subject Alternative Name(s):";
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echo ""; # newline
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echo "${certText}" | grep -A 1 "Subject Alternative Name:" \
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| sed -e "2s/DNS://g" -e "s/ //g" | tr "," "\n" | tail -n +2;
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return 0;
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else
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echo "ERROR: Certificate not found.";
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return 1;
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fi;
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}
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# `v` with no arguments opens the current directory in Vim, otherwise opens the
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# given location
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function v() {
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if [ $# -eq 0 ]; then
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vim .;
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else
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vim "$@";
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fi;
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}
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# `tre` is a shorthand for `tree` with hidden files and color enabled, ignoring
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# the `.git` directory, listing directories first. The output gets piped into
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# `less` with options to preserve color and line numbers, unless the output is
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# small enough for one screen.
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function tre() {
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tree -aC -I '.git|node_modules|bower_components' --dirsfirst "$@" | less -FRNX;
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}
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# Copy w/ progress
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cp_p () {
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rsync -WavP --human-readable --progress "$1" "$2"
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}
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# transfer.sh from https://gist.github.com/nl5887/a511f172d3fb3cd0e42d
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transfer() {
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if [ $# -eq 0 ];
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then
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echo "No arguments specified. Usage:\necho transfer /tmp/test.md\ncat /tmp/test.md | transfer test.md"
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return 1
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fi
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tmpfile=$( mktemp -t transferXXX )
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file=$1
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if tty -s;
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then
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basefile=$(basename "$file" | sed -e 's/[^a-zA-Z0-9._-]/-/g')
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if [ ! -e $file ];
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then
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echo "File $file doesn't exists."
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return 1
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fi
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if [ -d $file ];
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then
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# zip directory and transfer
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zipfile=$( mktemp -t transferXXX.zip )
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cd $(dirname $file) && zip -r -q - $(basename $file) >> $zipfile
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curl --progress-bar --upload-file "$zipfile" "https://transfer.sh/$basefile.zip" >> $tmpfile
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rm -f $zipfile
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else
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# transfer file
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curl --progress-bar --upload-file "$file" "https://transfer.sh/$basefile" >> $tmpfile
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fi
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else
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# transfer pipe
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curl --progress-bar --upload-file "-" "https://transfer.sh/$file" >> $tmpfile
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fi
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cat $tmpfile
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rm -f $tmpfile
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}
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# movie goodies
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# animated gifs from any video
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# from alex sexton gist.github.com/SlexAxton/4989674
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gifify() {
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if [[ -n "$1" ]]; then
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if [[ $2 == '--good' ]]; then
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ffmpeg -i $1 -r 10 -vcodec png out-static-%05d.png
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time convert -verbose +dither -layers Optimize -resize 900x900\> out-static*.png GIF:- | gifsicle --colors 128 --delay=5 --loop --optimize=3 --multifile - > $1.gif
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rm out-static*.png
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else
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ffmpeg -i $1 -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > $1.gif
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fi
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else
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echo "proper usage: gifify <input_movie.mov>. You DO need to include extension."
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fi
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}
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# turn that video into webm.
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# brew reinstall ffmpeg --with-libvpx
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webmify(){
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ffmpeg -i $1 -vcodec libvpx -acodec libvorbis -isync -copyts -aq 80 -threads 3 -qmax 30 -y $2 $1.webm
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}
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ffconcat(){
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if [ -e "$1" ]; then
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echo "Error: First argument is the output file and it should _not_ exist ($1)"
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else
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ffmpeg -f concat -safe 0 -i <(printf "file '$PWD/%s'\n" "${@:2}") -c copy "$1"
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fi
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}
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# weather forecast
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#
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weather(){
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if [ -z "$1" ]; then
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curl -4 -A Curl wttr.in
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else
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curl -4 -A Curl wttr.in/`urlencode "$*"`
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fi
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}
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