pepa65
parent
f5633b62d1
commit
f7c0d509f0
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@ -0,0 +1,357 @@
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#!/bin/bash
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set +vx -o pipefail
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[[ $- = *i* ]] && echo "Don't source this script!" && return 1
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VERSION='0.1a'
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# tldr-bash-client version 0.1a
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# forked from Ray Lee, http://github.com/raylee/tldr
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# modified and expanded by pepa65: http://github.com/pepa65/tldr-bash-client
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# Requiring: coreutils, less, grep, unzip, curl/wget
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# The 5 elements in TLDR markup that can be styled with these colors and
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# backgrounds (last one specified will be used) and modes (more can apply):
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# Colors: Black, Red, Green, Yellow, Blue, Magenta, Cyan, White
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# BG: BlackBG, RedBG, GreenBG, YellowBG, BlueBG, MagentaBG, CyanBG, WhiteBG
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# Modes: Bold, Underline, Italic, Inverse
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# 'Newline' can be added to the Style list to add a newline before the element
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# and 'Space' to add a space at the start of the line (not for Value element)
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# (The style items are separated by space, lower or uppercase mixed allowed.)
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: ${TLDR_TITLE_STYLE:= Newline Space Bold Yellow }
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: ${TLDR_DESCRIPTION_STYLE:= Space Yellow }
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: ${TLDR_EXAMPLE_STYLE:= Newline Space Bold Green }
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: ${TLDR_CODE_STYLE:= Space Bold Blue }
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: ${TLDR_VALUE_STYLE:= Space Bold Cyan }
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# Color and/or background (Newline and Space also allowed) for error messages
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: ${TLDR_ERROR_COLOR= Space Red }
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# How long before an attempt will be made to re-download a page
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: ${TLDR_EXPIRY:= 60 }
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Usage(){ # $1: optional exit code
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SELF=$(basename $0)
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local exit=${1:-0}
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Out "$(cat <<-EOF
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$version
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USAGE: $GRE$B$SELF$XB$DEF [$YEL${B}option$XB$DEF] [$BLU${B}platform$XB/$DEF]$CYA$B<command>$XB$DEF
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$BLU$B platform$XB/$CYA${B}command$XB$DEF: Show page for$CYA$B command$XB$DEF (from$BLU$B platform$XB$DEF)
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$BLU$B platform$XB$DEF is optionally one of:$YEL common$DEF,$YEL linux$DEF,$YEL osx$DEF,$YEL sunos$DEF
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$YEL$B option$XB$DEF is optionally one of:
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$B$YEL-l$DEF,$YEL --list$DEF $BLU[platform]$DEF$XB: Show all available pages (from$BLU$B platform$XB$DEF)
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$B$YEL-r$DEF,$YEL --render$DEF$XB $MAG$B<file>$XB$DEF: Render a local$B$MAG file$DEF$XB as tldr markdown
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$B$YEL-m$DEF,$YEL --markdown$DEF$XB $CYA$B<command>$XB$DEF: Show the markdown source for$B$CYA command$DEF$XB
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$B$YEL-c$DEF,$YEL --cache$DEF$XB: Cache all pages by downloading archive from repo
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$B$YEL-u$DEF,$YEL --update$DEF$XB: Re-download index file from repo
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$B$YEL-v$DEF,$YEL --version$DEF$XB: Version number and repo location
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[$B$YEL-h$DEF,$YEL -?$DEF,$YEL --help$DEF$XB]: This help overview
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Element styling:$T Title$XT$D Description$XD$E Example$XD$C Code$XC$V Value$XV
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All pages and the index are cached locally under $YEL$configdir$DEF.
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By default, the cached copies will be re-downloaded after $YEL${TLDR_EXPIRY// /}$DEF days.
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EOF
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)"
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exit $exit
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}
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Err(){ STDERR+=$ERRNL$ERRSP$ERR$B$1$XB$XERR$N;} # $1: error message for later
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Out(){ STDOUT+=$1$N;} # $1: message for later
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Style(){ # $1: Style specification
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local style
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STYLES= XSTYLES= COLOR= XCOLOR= NL= SP=
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for style in $1
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do
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[[ ${style,,} = newline ]] && NL=$N
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[[ ${style,,} = space ]] && SP=' '
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COLOR+=${color[${style,,}]:-}${bg[${style,,}]:-}
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XCOLOR=${xbg[${style,,}]:-}${xcolor[${style,,}]:-}$XCOLOR
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STYLES+=${color[${style,,}]:-}${bg[${style,,}]:-}${mode[${style,,}]:-}
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XSTYLES=${xmode[${style,,}]:-}${xbg[${style,,}]:-}${xcolor[${style,,}]:-}$XSTYLES
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done
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}
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Init_term(){
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[[ -t 2 ]] && { # only if interactive session (stderr open)
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B=$'\e[1m' # $(tput bold || tput md) # Start bold
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XB=$'\e[0m' # End bold (no tput code...) -- needs echo -e
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U=$'\e[4m' # $(tput smul || tput us) # Start underline
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XU=$'\e[24m' # $(tput rmul || tput ue) # End underline
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I=$'\e[3m' # $(tput sitm || tput ZH) # Start italic
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XI=$'\e[23m' # $(tput ritm || tput ZR) # End italic
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R=$'\e[7m' # $(tput smso || tput so) # Start reverse
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XR=$'\e[27m' # $(tput rmso || tput se) # End reverse
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X=$'\e[0m' # $(tput sgr0 || tput me) # End all
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[[ $TERM != *-m ]] && {
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BLA=$'\e[30m' # $(tput setaf 0 || tput AF 0)
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RED=$'\e[31m' # $(tput setaf 1 || tput AF 1)
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GRE=$'\e[32m' # $(tput setaf 2 || tput AF 2)
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YEL=$'\e[33m' # $(tput setaf 3 || tput AF 3)
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BLU=$'\e[34m' # $(tput setaf 4 || tput AF 4)
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MAG=$'\e[35m' # $(tput setaf 5 || tput AF 5)
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CYA=$'\e[36m' # $(tput setaf 6 || tput AF 6)
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WHI=$'\e[37m' # $(tput setaf 7 || tput AF 7)
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DEF=$'\e[39m' # $(tput op)
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BLAB=$'\e[40m' # $(tput setab 0 || tput AB 0)
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REDB=$'\e[41m' # $(tput setab 1 || tput AB 1)
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GREB=$'\e[42m' # $(tput setab 2 || tput AB 2)
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YELB=$'\e[43m' # $(tput setab 3 || tput AB 3)
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BLUB=$'\e[44m' # $(tput setab 4 || tput AB 4)
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MAGB=$'\e[45m' # $(tput setab 5 || tput AB 5)
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CYAB=$'\e[46m' # $(tput setab 6 || tput AB 6)
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WHIB=$'\e[47m' # $(tput setab 7 || tput AB 7)
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DEFB=$'\e[49m' # $(tput op)
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}
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}
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declare -A color=(['black']=$BLA ['red']=$RED ['green']=$GRE ['yellow']=$YEL \
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['blue']=$BLU ['magenta']=$MAG ['cyan']=$CYA ['white']=$WHI)
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declare -A xcolor=(['black']=$DEF ['red']=$DEF ['green']=$DEF ['yellow']=$DEF \
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['blue']=$DEF ['magenta']=$DEF ['cyan']=$DEF ['white']=$DEF)
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declare -A bg=(['blackbg']=$BLAB ['redbg']=$REDB ['greenbg']=$GREB ['yellowbg']=$YELB \
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['bluebg']=$BLUB ['magentabg']=$MAGB ['cyanbg']=$CYAB ['whitebg']=$WHIB)
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declare -A xbg=(['blackbg']=$DEFB ['redbg']=$DEFB ['greenbg']=$DEFB ['yellowbg']=$DEFB \
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['bluebg']=$DEFB ['magentabg']=$DEFB ['cyanbg']=$DEFB ['whitebg']=$DEFB)
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declare -A mode=(['bold']=$B ['underline']=$U ['italic']=$I ['inverse']=$R)
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declare -A xmode=(['bold']=$XB ['underline']=$XU ['italic']=$XI ['inverse']=$XR)
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# the five main tldr page styles and error message colors
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Style "$TLDR_TITLE_STYLE"
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T=$STYLES XT=$XSTYLES TNL=$NL TSP=$SP
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Style "$TLDR_DESCRIPTION_STYLE"
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D=$STYLES XD=$XSTYLES DNL=$NL DSP=$SP
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Style "$TLDR_EXAMPLE_STYLE"
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E=$STYLES XE=$XSTYLES ENL=$NL ESP=$SP
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Style "$TLDR_CODE_STYLE"
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C=$STYLES XC=$XSTYLES CNL=$NL CSP=$SP
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Style "$TLDR_VALUE_STYLE"
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V=$STYLES XV=$XSTYLES
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Style "$TLDR_ERROR_COLOR"
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ERR=$COLOR XERR=$XCOLOR ERRNL=$NL ERRSP=$SP
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}
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Recent(){ find "$1" -mtime -${TLDR_EXPIRY// /} &>/dev/null;} # $1: page
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Update_index(){
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$DL "$index" "$index_url" && Out "${GRE}Index file $I$index$XI re-downloaded$DEF" || {
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Err "Could not download index from $I$index_url$XI"
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exit 2
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}
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}
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Config(){ # initialize globals, sanity check the environment, etc.
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PLATFORM=common STDOUT= STDERR= Q='"' N=$'\n'
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case $(uname -s) in
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Darwin) PLATFORM='osx' ;;
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Linux) PLATFORM='linux' ;;
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SunOS) PLATFORM='sunos' ;;
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esac
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Init_term
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trap 'echo -ne "$STDOUT$STDERR" |less -RXQFP"%db/%D Press Q to exit "' EXIT
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version="$GRE$B tldr-bash-client version $VERSION$XB $YEL http://github.com/pepa65/tldr-bash-client$DEF"
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# Select download method
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DL="$(type -p curl) -sfo" || {
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DL="$(type -p wget) -qNO" || {
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Err "tldr requires$I curl$XI or$I wget $XI installed in your path"
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exit 3
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}
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}
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base_url='https://raw.githubusercontent.com/tldr-pages/tldr/master/pages'
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zip_url='http://tldr-pages.github.io/assets/tldr.zip'
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index_url='http://tldr-pages.github.io/assets/index.json'
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[[ -d ~/.config ]] && configdir=~/.config/tldr || configdir=~/.tldr
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[[ -d "$configdir" ]] || mkdir -p "$configdir"
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index=$configdir/index.json
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# update if the file doesn't exists, or if it's older than $TLDR_EXPIRY
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[[ -f $index ]] && Recent "$index" || Update_index
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}
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Unlinted(){ # $1: error message
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Err "Page $I$PAGE$XI not properly linted!\nLine $I$L$XI:[$U$REPLY$XU]$N$ERR$B$1"
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exit 4
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}
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Get_tldr(){ # $1: page
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# convert the local platform name to tldr's version
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# extract the platform key from index.json, return preferred subpath to page
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local desc=$(tr '{' '\n' <$index |grep "\"name\":\"$1\"")
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# results in, eg, "name":"netstat","platform":["linux","osx"]},
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[[ $desc ]] || return # just not found
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local err=0
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if [[ $platform ]]
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then # platform given on commandline
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[[ ! $desc =~ \"$platform\" ]] && notfound=$I$platform$XI && err=1 || PAGE=$platform/$1.md
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else # check common
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[[ $desc =~ \"common\" ]] && PAGE=common/$1.md || { # not in common either
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[[ $notfound ]] && notfound+=" or "
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notfound+=${I}common$XI
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}
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fi
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# if no page found yet, try the system platform
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[[ $PAGE ]] || [[ $platform = $PLATFORM ]] || {
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[[ $desc =~ \"$PLATFORM\" ]] && PAGE=$PLATFORM/$1.md
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} || {
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notfound+=" or $I$PLATFORM$XI"
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err=1
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}
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# if still no page found, get the first entry in index
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[[ $PAGE ]] || PAGE=$(cut -d $Q -f 8 <<<"$desc")/"$1.md"
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((err)) && Err "tldr page $I$1$XI not found in $notfound, page from platform $U${PAGE%/*}$XU instead"
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# return the local cached copy of the tldrpage, or retrieve and cache from github
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CACHED=$configdir/$PAGE
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Recent "$CACHED" || {
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mkdir -p "${CACHED%/*}"
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$DL "$CACHED" "$base_url/$PAGE" || Err "Could not download page $I$CACHED$XI from index $U$index_url$XU"
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}
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}
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Display_tldr(){
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# read one line at a time, don't strip whitespace ('IFS='), and
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# process last line even if it doesn't have a newline at the end
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L=0
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local newfmt len line
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while read -r || [[ $REPLY ]]
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do
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((++L))
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((L==1)) && {
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[[ ${REPLY:0:1} = '#' ]] && newfmt=0 || newfmt=1
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((newfmt)) && {
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[[ $REPLY ]] || Unlinted "No title"
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Out "$TNL$TSP$T$REPLY$XT"
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len=${#REPLY}
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read -r; ((++L))
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[[ $REPLY =~ [^=] ]] && Unlinted "Title underline must be equal signs"
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((len!=${#REPLY})) && Unlinted "Underline length not equal to title's"
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read -r; ((++L))
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}
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}
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case ${REPLY:0:1} in # first character
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'#') ((newfmt)) && Unlinted "Bad first character"
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((${#REPLY} <= 2)) && Unlinted "No title"
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[[ ! ${REPLY:1:1} = ' ' ]] && Unlinted "2nd character no space"
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Out "$TNL$TSP$T${REPLY:2}$XT" ;;
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'>') ((${#REPLY} <= 3)) && Unlinted "No valid desciption"
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[[ ! ${REPLY:1:1} = ' ' ]] && Unlinted "2nd character no space"
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[[ ! ${REPLY: -1} = '.' ]] && Unlinted "Description doesn't end in full stop"
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Out "$DNL$DSP$D${REPLY:2}$XD"
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DNL= ;;
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'-') ((newfmt)) && Unlinted "Bad first character"
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((${#REPLY} <= 2)) && Unlinted "No example content"
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[[ ! ${REPLY:1:1} = ' ' ]] && Unlinted "2nd character no space"
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Out "$ENL$ESP$E${REPLY:2}$XE" ;;
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' ') ((newfmt)) || Unlinted "Bad first character"
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((${#REPLY} <= 4)) && Unlinted "No valid code content"
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[[ ${REPLY:0:4} = ' ' ]] || Unlinted "No four spaces before code"
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line=${REPLY:4}
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# Value: convert {{value}}
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line=${line//\{\{/$CX$V}
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line=${line//\}\}/$XV$C}
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Out "$CNL$CSP$C$line$XC" ;;
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'`') ((newfmt)) && Unlinted "Bad first character"
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((${#REPLY} <= 2)) && Unlinted "No valid code content"
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[[ ! ${REPLY: -1} = '`' ]] && Unlinted "Code doesn't end in backtick"
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line=${REPLY:1:-1}
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# Value: convert {{value}}
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line=${line//\{\{/$CX$V}
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line=${line//\}\}/$XV$C}
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Out "$CNL$CSP$C$line$XC" ;;
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'') continue ;;
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*) ((newfmt)) || Unlinted "Bad first character"
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[[ -z $REPLY ]] && Unlinted "No example content"
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Out "$ENL$EPS$E$REPLY$XE" ;;
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esac
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done
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}
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List_pages(){ # $1: exit code
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local platformtext
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[[ $platform ]] && platformtext=" from platform $I$platform$XI"
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Out "${GRE}Known tldr pages$platformtext:"
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Out "$(while read c1 c2 c3; do printf "%-19s %-19s %-19s %-19s$N" $c1 $c2 $c3; done \
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<<<$(tr '{' '\n' <"$index" |grep "$platform" |cut -d $Q -f4))"
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exit $1
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}
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Cache_fill(){ # $1: exit code
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local tmp=$(mktemp -d)
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$DL "$tmp/pages.zip" "$zip_url" || {
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rm -- "$tmp"
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Err "Could not download pages archive from $U$zip_url$XU"
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exit 6
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}
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unzip="$(type -p unzip) -q" || {
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rm -- "$tmp"
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Err "Unzip is necessary to fill the cache"
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exit 7
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}
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$unzip "$tmp/pages.zip" -d "$tmp" 'pages/*'
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rm -rf -- "$configdir/"*
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mv -- "$tmp/pages/"* "$configdir/"
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rm -rf -- "$tmp"
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Out "${GRE}Pages cached in $U$configdir$XU$DEF"
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exit $1
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}
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Config
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markdown=0 err=0
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arg=$1
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case "$arg" in
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-l|--list) [[ $2 ]] && {
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platform=$2
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[[ ,common,linux,osx,sunos, = *,$platform,* ]] || {
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Err "Unknown platform $I$platform$XI"
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Usage 8
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}
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[[ $3 ]] && Err "No more command line arguments allowed" && err=9
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}
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List_pages $err ;;
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-c|--cache) [[ $2 ]] && Err "No more command line arguments allowed" && err=10
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Cache_fill $err ;;
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-v|--version) [[ $2 ]] && Err "No more command line arguments allowed" && err=11
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Out "$version"
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exit $err ;;
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-u|--update) [[ $2 ]] && Err "No more command line arguments allowed" && err=12
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Update_index
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exit $err ;;
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-r|--render) [[ -z $2 ]] && Err "Specify a file to render" && Usage 13
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[[ $3 ]] && Err "No more command line arguments allowed" && err=14
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[[ -f "$2" ]] && {
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Display_tldr <"$2" && exit $err
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Err "A file error occured"
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exit 15
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} || Err "No file:$I $2$XI" && exit 16 ;;
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-m|--markdown) shift
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page=$@
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[[ -z $page ]] && Err "Specify a page to display" && Usage 17
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[[ -f "$page" && ${page: -3:3} = .md ]] && Out "$(cat "$page")" && exit 0
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markdown=1 ;;
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''|-h|-\?|--help) [[ $2 ]] && Err "No more command line arguments allowed" && err=18
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Usage $err ;;
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-*) Err "Unrecognized option $I$1$XI"; Usage 19 ;;
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*) page=$@ ;;
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esac
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[[ -z $page ]] && Err "No command specified" && Usage 20
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[[ $page =~ ' -' || ${page:0:1} = '-' ]] && Err "Only one option allowed" && Usage 21
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[[ $page = */* ]] && platform=${page%/*} && page=${page##*/}
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[[ $platform && ,common,linux,osx,sunos, != *,$platform,* ]] && {
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Err "Unknown platform $I$platform$XI"
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Usage 22
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}
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Get_tldr ${page// /-}
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[[ ! -s $CACHED ]] && Err "tldr page for command $I$page$XI not found" && exit 23
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((markdown)) && Out "$(cat "$CACHED")" || Display_tldr <"$CACHED"
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# The error trap will output the accumulated stdout and stderr
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exit 0
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@ -51,7 +51,7 @@ Also the error color and page expiry can easily be set:
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Please file an issue for a question, a bug or a feature request.
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Or even better, send a pull request!
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[This tldr-bash-client github page](http://github.com/pepa65/tldr-bash-client "github.com/pepa65/tldr-bash-client")
|
||||
[tldr-bash-client github page](http://github.com/pepa65/tldr-bash-client "github.com/pepa65/tldr-bash-client")
|
||||
|
||||
<img alt="tldr markdown screenshot" src="tldr-markdown.jpg" title="tldr markdown" width="600" />
|
||||
|
||||
|
|
|
|||
21
tldr
21
tldr
|
|
@ -55,9 +55,9 @@ Usage(){ # $1: optional exit code
|
|||
exit $exit
|
||||
}
|
||||
|
||||
Err(){ STDERR+=$ERRNL$ERRSP$ERR$B$1$XB$XERR$N;} # $1: error message for later
|
||||
Err(){ STDERR+=$ERRNL$ERRSP$ERR$B$1$XB$XERR$N;} # $1: keep error messages
|
||||
|
||||
Out(){ STDOUT+=$1$N;} # $1: message for later
|
||||
Out(){ STDOUT+=$1$N;} # $1: keep output
|
||||
|
||||
Style(){ # $1: Style specification
|
||||
local style
|
||||
|
|
@ -76,7 +76,7 @@ Style(){ # $1: Style specification
|
|||
Init_term(){
|
||||
[[ -t 2 ]] && { # only if interactive session (stderr open)
|
||||
B=$'\e[1m' # $(tput bold || tput md) # Start bold
|
||||
XB=$'\e[0m' # End bold (no tput code...) -- needs echo -e
|
||||
XB=$'\e[0m' # End bold (no tput code...)
|
||||
U=$'\e[4m' # $(tput smul || tput us) # Start underline
|
||||
XU=$'\e[24m' # $(tput rmul || tput ue) # End underline
|
||||
I=$'\e[3m' # $(tput sitm || tput ZH) # Start italic
|
||||
|
|
@ -105,12 +105,6 @@ Init_term(){
|
|||
WHIB=$'\e[47m' # $(tput setab 7 || tput AB 7)
|
||||
DEFB=$'\e[49m' # $(tput op)
|
||||
}
|
||||
# osx's termcap doesn't have italics. The below adds support for iTerm2
|
||||
# and is harmless on Terminal.app
|
||||
#[[ $(uname -s) = Darwin ]] && {
|
||||
# I=$(echo -e "\e[3m")
|
||||
# XI=$(echo -e "\e[23m")
|
||||
#}
|
||||
}
|
||||
|
||||
declare -A color=(['black']=$BLA ['red']=$RED ['green']=$GRE ['yellow']=$YEL \
|
||||
|
|
@ -124,7 +118,7 @@ Init_term(){
|
|||
declare -A mode=(['bold']=$B ['underline']=$U ['italic']=$I ['inverse']=$R)
|
||||
declare -A xmode=(['bold']=$XB ['underline']=$XU ['italic']=$XI ['inverse']=$XR)
|
||||
|
||||
# the five main tldr page styles and error message colors
|
||||
# the 5 main tldr page styles and error message colors
|
||||
Style "$TLDR_TITLE_STYLE"
|
||||
T=$STYLES XT=$XSTYLES TNL=$NL TSP=$SP
|
||||
Style "$TLDR_DESCRIPTION_STYLE"
|
||||
|
|
@ -141,14 +135,14 @@ Init_term(){
|
|||
|
||||
Recent(){ find "$1" -mtime -${TLDR_EXPIRY// /} &>/dev/null;} # $1: page
|
||||
|
||||
Update_index(){
|
||||
Update_index(){ # Download index.json
|
||||
$DL "$index" "$index_url" && Out "${GRE}Index file $I$index$XI re-downloaded$DEF" || {
|
||||
Err "Could not download index from $I$index_url$XI"
|
||||
exit 2
|
||||
}
|
||||
}
|
||||
|
||||
Config(){ # initialize globals, sanity check the environment, etc.
|
||||
Config(){ # Initialize globals, check the environment
|
||||
PLATFORM=common STDOUT= STDERR= Q='"' N=$'\n'
|
||||
case $(uname -s) in
|
||||
Darwin) PLATFORM='osx' ;;
|
||||
|
|
@ -156,7 +150,7 @@ Config(){ # initialize globals, sanity check the environment, etc.
|
|||
SunOS) PLATFORM='sunos' ;;
|
||||
esac
|
||||
Init_term
|
||||
trap 'echo -ne "$STDOUT$STDERR" |less -RXMQF' EXIT
|
||||
trap 'less -RXQFP"Press Q to exit " <<<"$STDOUT$STDERR"' EXIT
|
||||
|
||||
version="$GRE$B tldr-bash-client version $VERSION$XB $YEL http://github.com/pepa65/tldr-bash-client$DEF"
|
||||
|
||||
|
|
@ -277,6 +271,7 @@ Display_tldr(){
|
|||
Out "$ENL$EPS$E$REPLY$XE" ;;
|
||||
esac
|
||||
done
|
||||
trap 'less +Gg -RXQFP"%pB\% tldr $I$page$XI - press Q to exit" <<<"$STDOUT$STDERR"' EXIT
|
||||
}
|
||||
|
||||
List_pages(){ # $1: exit code
|
||||
|
|
|
|||
Loading…
Reference in New Issue