#!/bin/sh

get_synopsis () {
        sed -n '
                /^NAME/,/'"$1"'/H
                ${
                        x
                        s/.*'"$1"' - \(.*\)/N_("\1")/
                        p
                }' "Documentation/$1.txt"
}

echo "/* Automatically generated by generate-cmdlist.sh */
struct cmdname_help {
        char name[16];
        char help[80];
        unsigned char group;
};

static const char *common_cmd_groups[] = {"

grps=grps$$.tmp
match=match$$.tmp
trap "rm -f '$grps' '$match'" 0 1 2 3 15

sed -n '
        1,/^### common groups/b
        /^### command list/q
        /^#/b
        /^[     ]*$/b
        h;s/^[^         ][^     ]*[     ][      ]*\(.*\)/       N_("\1"),/p
        g;s/^\([^       ][^     ]*\)[   ].*/\1/w '$grps'
        ' "$1"
printf '};\n\n'

n=0
substnum=
while read grp
do
        echo "^git-..*[         ]$grp"
        substnum="$substnum${substnum:+;}s/[    ]$grp/$n/"
        n=$(($n+1))
done <"$grps" >"$match"

printf 'static struct cmdname_help common_cmds[] = {\n'
grep -f "$match" "$1" |
sed 's/^git-//' |
sort |
while read cmd tags
do
        tag=$(echo "$tags" | sed "$substnum; s/[^0-9]//g")
        echo "  {\"$cmd\", $(get_synopsis git-$cmd), $tag},"
done
echo "};"