Add an installation script
Copying snippets from the README was uncomfortable and laborious, and wasted a lot of space in the document, especially after the recent additions. Closes #3
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@ -27,6 +27,7 @@ target_compile_definitions (${PROJECT_NAME} PUBLIC
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include (GNUInstallDirs)
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install (TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_BINDIR})
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install (PROGRAMS ${PROJECT_NAME}-install DESTINATION ${CMAKE_INSTALL_BINDIR})
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install (FILES LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})
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set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Directory navigator")
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118
README.adoc
118
README.adoc
@ -47,117 +47,17 @@ into the PATH of any machine you want to have 'sdn' on.
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Integration
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-----------
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The package contains an installation script called 'sdn-install' which will bind
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'sdn' to M-o in your shell's initialisation file. The supported shells are:
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zsh
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~~~
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To start using this navigator, put the following in your '.zshrc':
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- *zsh*: works well
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- *bash*: minor issue: exiting the navigator confirms an empty prompt
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- *fish*: works well
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- *elvish*: version 0.14.1 and above, an unstable API is used, works well
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----
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sdn-navigate () {
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# ... possibly zle-line-finish
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while eval "`sdn "$BUFFER" "$CURSOR"`"; do
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[ -z "$cd" ] || cd "$cd"
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[ -z "$insert" ] || LBUFFER="$LBUFFER$insert "
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[ -z "$helper" ] && break
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# Workaround for "zsh: suspended (tty output)" when invoking
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# helpers after the terminal has been resized while running sdn
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command true
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/bin/sh -c "$helper" </dev/tty || break
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done
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# ... possibly zle-line-init
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zle reset-prompt
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}
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zle -N sdn-navigate
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bindkey '\eo' sdn-navigate
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----
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bash
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~~~~
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Here we can't make the shell update the prompt on directory changes since
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there's no way to invoke `prompt_again()` from a `bind -x` handler but we can
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work around it by submitting a blank line:
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----
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sdn-cursor () {
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if [[ $BASH_VERSINFO -lt 5 ]]
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then echo -n "$SDN_L" | wc -m
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else echo "$SDN_P"
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fi
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}
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sdn-navigate () {
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SDN_L=$READLINE_LINE SDN_P=$READLINE_POINT
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READLINE_LINE=
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while eval "`sdn "$SDN_L" "$(sdn-cursor)"`"; do
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[[ -z $cd ]] || cd "$cd"
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[[ -z $insert ]] || {
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SDN_L="${SDN_L:0:$SDN_P}$insert ${SDN_L:$SDN_P}"
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((SDN_P=SDN_P+${#insert}+1))
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}
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[[ -z $helper ]] && break
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/bin/sh -c "$helper" || break
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done
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}
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sdn-restore () {
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READLINE_LINE=$SDN_L READLINE_POINT=$SDN_P
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unset SDN_L SDN_P
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}
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bind -x '"\200": sdn-navigate'
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bind -x '"\201": sdn-restore'
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bind '"\eo":"\200\C-m\201"'
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----
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fish
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~~~~
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To start using this navigator, put the following in your 'config.fish':
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----
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function sdn-navigate
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set --local IFS
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set --local buffer (commandline)
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set --local cursor (commandline --cursor)
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while eval (sdn $buffer $cursor | string replace -ar '^(.*?)=' 'set --$1 ')
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test -z "$cd" || cd "$cd"
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test -z "$insert" || commandline --insert "$insert "
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test -z "$helper" && break
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/bin/sh -c "$helper" || break
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end
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commandline --function repaint
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end
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bind \eo sdn-navigate
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----
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elvish
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~~~~~~
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To start using this navigator, put the following in your 'rc.elv':
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----
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use str
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edit:insert:binding[Alt-o] = {
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local:reesc = [posix]{ str:replace "'\\''" "''" $posix }
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local:posix = [cmd]{ /bin/sh -c $cmd </dev/tty >/dev/tty 2>&1 }
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# XXX: the -dot is not a stable API, and may hence break soon
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local:buffer = $edit:current-command
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local:cursor = (str:to-codepoints $buffer[0..$edit:-dot] | count)
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local:ns = (ns [&])
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while ?(eval ($reesc (sdn $buffer $cursor |
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sed 's/^local //' | slurp)) &ns=$ns) {
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if (not-eq $ns[cd] "") { cd $ns[cd] }
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if (not-eq $ns[insert] "") { edit:insert-at-dot $ns[insert]" " }
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if (or (eq $ns[helper] "") (not ?($posix $ns[helper]))) { break }
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}
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edit:redraw &full=$true
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}
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----
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This shell is absolutely perverse. And so is integrating 'sdn' into it because
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it already includes a custom file manager, bound to Ctrl-N (though I find
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the ranger-like interface confusing and resource-demanding). Version 0.14.1 or
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newer is required.
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elvish is absolutely perverse. And so is integrating 'sdn' into it because it
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already includes a custom file manager, bound to Ctrl-N (though I find the
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ranger-like interface confusing and resource-demanding).
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Configuration
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-------------
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176
sdn-install
Executable file
176
sdn-install
Executable file
@ -0,0 +1,176 @@
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#!/bin/sh -e
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# sdn-install: integrate sdn with the shell, binding to M-o
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# vim: set sw=2 ts=2 sts=2 et tw=80:
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zsh() {
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cat <<'EOF'
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sdn-navigate () {
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# ... possibly zle-line-finish
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while eval "`SDN=1 sdn "$BUFFER" "$CURSOR"`"
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do
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[ -z "$cd" ] || cd "$cd"
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[ -z "$insert" ] || LBUFFER="$LBUFFER$insert "
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[ -z "$helper" ] && break
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# Workaround for "zsh: suspended (tty output)" when invoking
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# helpers after the terminal has been resized while running sdn
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command true
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/bin/sh -c "$helper" </dev/tty || break
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done
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# ... possibly zle-line-init
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zle reset-prompt
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}
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zle -N sdn-navigate
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bindkey '\eo' sdn-navigate
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EOF
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}
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bash() {
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cat <<'EOF'
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# We can't make the shell update the prompt on directory changes
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# since there's no way to invoke `prompt_again()` from a `bind -x`
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# handler but we can work around it by submitting a blank line.
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sdn-cursor () {
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if [[ $BASH_VERSINFO -lt 5 ]]
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then echo -n "$SDN_L" | wc -m
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else echo "$SDN_P"
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fi
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}
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sdn-navigate () {
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SDN_L=$READLINE_LINE SDN_P=$READLINE_POINT
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READLINE_LINE=
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while eval "`SDN=1 sdn "$SDN_L" "$(sdn-cursor)"`"
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do
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[[ -z $cd ]] || cd "$cd"
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[[ -z $insert ]] || {
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SDN_L="${SDN_L:0:$SDN_P}$insert ${SDN_L:$SDN_P}"
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((SDN_P=SDN_P+${#insert}+1))
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}
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[[ -z $helper ]] && break
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/bin/sh -c "$helper" || break
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done
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}
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sdn-restore () {
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READLINE_LINE=$SDN_L READLINE_POINT=$SDN_P
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unset SDN_L SDN_P
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}
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bind -x '"\200": sdn-navigate'
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bind -x '"\201": sdn-restore'
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bind '"\eo":"\200\C-m\201"'
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EOF
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}
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fish() {
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cat <<'EOF'
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function sdn-navigate
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set --local IFS
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set --local buffer (commandline)
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set --local cursor (commandline --cursor)
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while eval (SDN=1 sdn $buffer $cursor | \
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string replace -ar '^(.*?)=' 'set --$1 ')
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test -z "$cd" || cd "$cd"
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test -z "$insert" || commandline --insert "$insert "
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test -z "$helper" && break
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/bin/sh -c "$helper" || break
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end
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commandline --function repaint
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end
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bind \eo sdn-navigate
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EOF
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}
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elvish() {
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cat <<'EOF'
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edit:insert:binding[Alt-o] = {
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use str
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local:reesc = [posix]{ str:replace "'\\''" "''" $posix }
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local:posix = [cmd]{ /bin/sh -c $cmd </dev/tty >/dev/tty 2>&1 }
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# XXX: the -dot is not a stable API, and may hence break soon
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local:buffer = $edit:current-command
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local:cursor = (str:to-codepoints $buffer[0..$edit:-dot] | count)
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local:ns = (ns [&])
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while ?(eval ($reesc (E:SDN=1 sdn $buffer $cursor |
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sed 's/^local //' | slurp)) &ns=$ns) {
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if (not-eq $ns[cd] "") { cd $ns[cd] }
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if (not-eq $ns[insert] "") { edit:insert-at-dot $ns[insert]" " }
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if (or (eq $ns[helper] "") (not ?($posix $ns[helper]))) { break }
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}
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edit:redraw &full=$true
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}
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EOF
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}
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shell= path=
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while getopts s:f:h opt
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do
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case $opt in
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s) shell=$OPTARG;;
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f) path=$OPTARG;;
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*) echo "Usage: $0 [-s SHELL] [-f RCPATH | -]"; exit 2
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esac
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done
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# Figure out the shell to integrate with
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login=$(basename "$SHELL")
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actual=$(ps -p $$ -o ppid= | xargs ps -o comm= -p)
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if [ -z "$shell" ]
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then
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if [ "$login" != "$actual" ]
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then
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echo "Conflict between login ($actual) and invoking ($actual) shell."
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echo "Specify the shell with the -s option."
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exit 1
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fi
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shell=$actual
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fi
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# Figure out the default initialisation file
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case "$shell" in
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zsh|bash)
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rc=~/.${shell}rc;;
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fish)
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rc=${XDG_CONFIG_HOME:-$HOME/.config}/fish/conf.d/sdn.fish;;
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elvish)
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rc=~/.elvish/rc.elv;;
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*)
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echo "$shell is not supported."
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exit 1
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esac
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# Just print out the snippet if requested
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if [ "$path" = "-" ]
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then
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$shell
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exit 0
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fi
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# Finally append to or update the appropriate file
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b="# sdn-install begin"
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e="# sdn-install end"
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[ -z "$path" ] && path=$rc
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mkdir -p "$(dirname "$path")"
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touch "$path"
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if ! grep -q "^$b" "$path" 2>/dev/null || ! grep -q "^$e" "$path" 2>/dev/null
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then
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printf "\n$b\n%s\n$e\n" "$($shell)" >> "$path"
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echo "The snippet has been added to $path"
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exit 0
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fi
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# POSIX-compliant in-place sed, trying to retain permissions here
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temp=$path.sdn.new
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cp -p -- "$path" "$temp"
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sed < "$path" > "$temp" "/^$b/,/^$e/c\\
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$b\\
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$($shell | sed 's/\\/&&/g; s/$/\\/')
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$e"
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mv -- "$temp" "$path"
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echo "The snippet in $path has been updated."
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1
sdn.cpp
1
sdn.cpp
@ -1717,6 +1717,7 @@ int main (int argc, char *argv[]) {
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// We can't portably create a standard stream from an FD, so modify the FD
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dup2 (output_fd, STDOUT_FILENO);
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// TODO: avoid printing any of this unless the SDN envvar is set
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if (g.cwd != g.start_dir && !g.no_chdir)
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cout << "local cd=" << shell_escape (g.cwd) << endl;
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else
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