diff options
Diffstat (limited to 'Functions/Misc/zcalc')
| -rw-r--r-- | Functions/Misc/zcalc | 73 |
1 files changed, 48 insertions, 25 deletions
diff --git a/Functions/Misc/zcalc b/Functions/Misc/zcalc index 5e01e73d0..633a38e92 100644 --- a/Functions/Misc/zcalc +++ b/Functions/Misc/zcalc @@ -82,8 +82,6 @@ # To do: # - separate zcalc history from shell history using arrays --- or allow # zsh to switch internally to and from array-based history. -# - allow setting number of decimal places for display, scientific notation, -# etc. emulate -L zsh setopt extendedglob @@ -107,8 +105,10 @@ zcalc_restore() { } trap zcalc_restore HUP INT QUIT EXIT -local line latest base defbase match mbegin mend psvar optlist opt arg -integer num +local line ans base defbase forms match mbegin mend psvar optlist opt arg +integer num outdigits outform=1 + +forms=( '%2$g' '%.*g' '%.*f' '%.*E' ) zmodload -i zsh/mathfunc 2>/dev/null @@ -178,30 +178,53 @@ while vared -cehp "${(%)ZCALCPROMPT}" line; do else base=$defbase fi - # Exit if `q' on its own. - [[ $line = [[:blank:]]#q[[:blank:]]# ]] && return 0 print -s -- $line - if [[ $line = [[:blank:]]#local([[:blank:]]##*|) ]]; then - eval $line + + case ${${line##[[:blank:]]#}%%[[:blank:]]#} in + q) # Exit if `q' on its own. + return 0 + ;; + norm) # restore output format to default + outform=1 + ;; + sci[[:blank:]]#(#b)(<->)(#B)) + outdigits=$match[1] + outform=2 + ;; + fix[[:blank:]]#(#b)(<->)(#B)) + outdigits=$match[1] + outform=3 + ;; + eng[[:blank:]]#(#b)(<->)(#B)) + outdigits=$match[1] + outform=4 + ;; + local([[:blank:]]##*|)) + eval $line + line= + continue + ;; + *) + # Latest value is stored as a string, because it might be floating + # point or integer --- we don't know till after the evaluation, and + # arrays always store scalars anyway. + # + # Since it's a string, we'd better make sure we know which + # base it's in, so don't change that until we actually print it. + eval "ans=\$(( $line ))" + # on error $ans is not set; let user re-edit line + [[ -n $ans ]] || continue + argv[num++]=$ans + psvar[1]=$num + ;; + esac + if [[ -n $base ]]; then + print -- $(( $base $ans )) + elif [[ $ans = *.* ]] || (( outdigits )); then + printf "$forms[outform]\n" $outdigits $ans else - # Latest value is stored as a string, because it might be floating - # point or integer --- we don't know till after the evaluation, and - # arrays always store scalars anyway. - # - # Since it's a string, we'd better make sure we know which - # base it's in, so don't change that until we actually print it. - latest= - eval "latest=\$(( $line ))" - # on error $latest is not set; let user re-edit line - [[ -n $latest ]] || continue - argv[num++]=$latest - psvar[1]=$num - if [[ -z $base ]]; then - print -- $latest - else - print -- $(( $base $latest )) - fi + printf "%d\n" $ans fi line= done |