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https://github.com/dvorka/hstr.git
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99 lines
3.2 KiB
Bash
Executable file
99 lines
3.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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# ##################################################################
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# EXAMPLE: NOT WORKING version
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# Define a function to replace a word in the current line
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replace-word() {
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local oldword newword
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zle -I # switch to insert mode
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read -k "oldword?Enter word to replace: "
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read -k "newword?Enter replacement word: "
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BUFFER=${BUFFER//$oldword/$newword} # replace old word with new word
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zle redisplay # update the display
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}
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# Bind the function to a key sequence
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bindkey '^Xr' replace-word
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# ##################################################################
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#
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# EXAMPLE: WORKING version w/ foo HSTR
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foohstr() {
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echo "command-by-hstr-${1}"
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}
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hstrnotiocsti() {
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local word
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# we need the WHOLE buffer, not just 0 to cursor: word=${BUFFER[0,CURSOR]}
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BUFFER="$(foohstr ${BUFFER})"
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CURSOR=${#BUFFER}
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# update the display
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zle redisplay
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}
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# create ZLE widget ~ readline function
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zle -N hstrnotiocsti
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# bind widget to keyboard shortcut
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bindkey '\C-r' hstrnotiocsti
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# ##################################################################
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#
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# EXAMPLE: WORKING minimal production version w/ foo HSTR
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#
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# PROBLEM:
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# - active ZLE takes over the terminal input & output streams
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# - attempt to run HSTR using $(), ``, ... BLOCKS active ZLE progress
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# - w/o ZLE it is not possible to insert text into the terminal
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#
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# SOLUTION:
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# - HSTR input: can be enable by reading from </dev/tty
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# - HSTR output: is sent to stderr (as stdout is occupied by Curses)
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hstr_notiocsti() {
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zle -I
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TMPFILE=$(mktemp)
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</dev/tty hstr ${BUFFER} 2> ${TMPFILE}
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BUFFER="$(cat ${TMPFILE})"
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CURSOR=${#BUFFER}
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zle redisplay
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rm TMPFILE > /dev/null 2>&1
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}
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zle -N hstr_notiocsti
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bindkey '\C-r' hstr_notiocsti
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export HSTR_TIOCSTI=n
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# ##################################################################
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#
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# EXAMPLE: WORKING minimal production version w/ foo HSTR
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#
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# PROBLEM:
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# - active ZLE takes over the terminal input & output streams
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# - attempt to run HSTR using $(), ``, ... BLOCKS active ZLE progress
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# - w/o ZLE it is not possible to insert text into the terminal
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#
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# SOLUTION:
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# - HSTR input: can be enable by reading from </dev/tty
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# - HSTR output: we use CUSTOM file handle to get stderr output ONLY
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# 1. 2>&1 ... redirect stderr to stdout
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# 2. 1>&3 ... redirect stdout to custom file handle
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# (thus ONLY stderr is sent to stdout)
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# 3. 3>&- ... close custom file handle
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# (thus close stdout i.e. stdout won't be sent anywhere)
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# { ... } ... to execute in the current shell & set HSTR_OUT
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# 3>&1 ... restore stdout to custom file handle
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hstr_no_tiocsti() {
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zle -I
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{ HSTR_OUT="$( { </dev/tty hstr ${BUFFER}; } 2>&1 1>&3 3>&- )"; } 3>&1;
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BUFFER="${HSTR_OUT}"
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CURSOR=${#BUFFER}
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zle redisplay
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}
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zle -N hstr_no_tiocsti
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bindkey '\C-r' hstr_no_tiocsti
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# eof
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