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lib/pm: allow '<< ver' and '>> ver' in relations #125

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lib/pm: allow '<< ver' and '>> ver' in relations #125

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8 changes: 5 additions & 3 deletions lib/pm.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -6,20 +6,22 @@
# Magic book: ab2:PAKMGR.md
_ab_pm='' # package manager spec variables
# genver <pkgspec> -> pkgname[<ver_s><op>verstr<ver_e>]
_ab_pm+="OP_{EQ,LE,GE} VER_{S,E} "
_ab_pm+="OP_{EQ,LE,GE,LT,GT} VER_{S,E} "
pm_genver(){
local store IFS ver name # IFS is also used for holding OP.
: "${OP_EQ== } ${OP_LE=<= } ${OP_GE=>= } ${VER_S= (} ${VER_E=)}"
: "${OP_EQ== } ${OP_LE=<= } ${OP_GE=>= } ${OP_LT=<< } ${OP_GT=>> } ${VER_S= (} ${VER_E=)}"
if ((VER_NONE_ALL)); then # name-only
name="${1/%_}"
echo "${name/[<>=]=*}"; return
elif [[ "$1" =~ [\<\>=]= ]]; then # nameOP[ver] -> name OP_ ver
elif [[ "$1" =~ [\<\>=]=|\<\<|\>\> ]]; then # nameOP[ver] -> name OP_ ver
IFS="$BASH_REMATCH" # split string using each char in OP
read -ra store <<< "$1"
name=${store[0]} ver=${store[2]} # constexpr store[${#IFS}]
IFS=${IFS/==/$OP_EQ} # translate to package manager notation
IFS=${IFS/<=/$OP_LE}
IFS=${IFS/>=/$OP_GE}
IFS=${IFS/<</$OP_LT}
IFS=${IFS/>>/$OP_GT}
elif ((VER_NONE)) || [[ "$1" =~ _$ ]]; then # name{,_} -> name (e.g. conflicts, ..)
echo -n "${1%_}"; return;
else
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