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#! /bin/sh
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#############################################################################
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# download function
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download () {
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# download Google region flags
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if type svn
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then svn export https://github.com/google/region-flags/trunk/png google-region-flags
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else git clone --depth 1 https://github.com/google/region-flags.git google-region-flags &&
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ln google-region-flags/png/*.png google-region-flags/
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fi
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# download Puellanivis’ flag emojis
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git clone --depth 1 https://github.com/puellanivis/emoji.git puellanivis-flags &&
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(cd puellanivis-flags/flags; ln *.png */*.png ..)
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}
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#############################################################################
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# extract emoji files:
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# pre-deploy them with proper filename, according to codepoint pattern
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extract () {
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mkdir -p common
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for f in `ls *-flags/*.png`
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do e=${f##*/}
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e=${e%.png}
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if [ -n "$BASH_VERSION" ]
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then
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e=${e//-}
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e=${e//\'}
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#else filter them out by missing case below
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fi
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case $e in
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??) # 1F1E6 1F1E8 ; RGI_Emoji_Flag_Sequence
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tagseq=false;;
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*) # 1F3F4 E0067 E0062 E0065 E006E E0067 E007F; RGI_Emoji_Tag_Sequence; flag: England
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tagseq=true;;
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esac
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if $tagseq
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then n=1f3f4
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else n=
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fi
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# speed-up possible by using a common sed script...
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for l in $( echo "$e" | tr 'A-Z' 'a-z' | sed -e 's,.,& ,g' )
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do d=$( printf %d "'$l'" )
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if $tagseq
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then case "$l" in
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[a-z]|[0-9])
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d=$(( $d + 917504 ))
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n=$n-$( printf %x $d )
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;;
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#[a-z]) d=$(( $d - 97 + 917601 )) # 'a' -> U+E0061 ...
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# n=$n-$( printf %x $d )
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# ;;
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#[0-9]) d=$(( $d - 48 + 917552 )) # '0' -> U+E0030 ...
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# n=$n-$( printf %x $d )
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# ;;
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esac
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else d=$(( $d - 97 + 127462 )) # U+1F1E6
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n=$n-$( printf %x $d )
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fi
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done
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if $tagseq
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then n=$n-e007f.png
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else n=${n#-}.png
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fi
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echo "$f -> common/$n"
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ln "$f" "common/$n"
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done
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}
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#############################################################################
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# perform download and extraction/deployment
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case "$1" in
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""|-h|--help)
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echo "Usage: `basename $0` [-d | -e | -de]" >&2
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echo >&2
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echo "This script retrieves flag emojis from various sources." >&2
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echo >&2
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echo "Options:" >&2
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echo " -d Download flags emojis repositories" >&2
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echo " -e Extract emoji files with proper filenames into common/" >&2
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echo " -de -d and -e" >&2
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echo >&2
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if [ `uname` = "Linux" ] && type wslpath 2> /dev/null 1>&2
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then echo "Note: for direct deployment from WSL, first go into the common config directory:" >&2
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echo ' cd `wslpath "$APPDATA/mintty/emojis"` || cd `wslpath "$APPDATA/wsltty/emojis"`' >&2
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else echo "Note: for direct deployment, first go into subdirectory 'emojis' of one of the" >&2
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echo "mintty config directories:" >&2
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echo ' ~/.mintty' >&2
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echo ' ~/.config/mintty' >&2
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echo ' $APPDATA/mintty' >&2
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echo ' /usr/share/mintty' >&2
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fi
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exit;;
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-d|--download)
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download
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;;
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-e|--extract)
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extract
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;;
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-de|--all)
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download
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extract
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;;
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esac
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