1
0
mirror of https://github.com/git/git.git synced 2024-09-28 20:51:42 +02:00
git/generate-cmdlist.sh
Ævar Arnfjörð Bjarmason 8d5be8b421 generate-cmdlist.sh: stop sorting category lines
In a preceding commit we changed the print_command_list() loop to use
printf's auto-repeat feature. Let's now get rid of get_category_line()
entirely by not sorting the categories.

This will change the output of the generated code from e.g.:

    -       { "git-apply", N_("Apply a patch to files and/or to the index"), 0 | CAT_complete | CAT_plumbingmanipulators },

To:

    +       { "git-apply", N_("Apply a patch to files and/or to the index"), 0 | CAT_plumbingmanipulators | CAT_complete },

I.e. the categories are no longer sorted, but as they're OR'd together
it won't matter for the end result.

This speeds up the generate-cmdlist.sh a bit. Comparing HEAD~ (old)
and "master" to this code:

  'sh generate-cmdlist.sh command-list.txt' ran
    1.07 ± 0.33 times faster than 'sh generate-cmdlist.sh.old command-list.txt'
    1.15 ± 0.36 times faster than 'sh generate-cmdlist.sh.master command-list.txt'

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-11-05 12:01:13 -07:00

91 lines
1.4 KiB
Bash
Executable File

#!/bin/sh
die () {
echo "$@" >&2
exit 1
}
command_list () {
eval "grep -ve '^#' $exclude_programs" <"$1"
}
category_list () {
command_list "$1" |
cut -c 40- |
tr ' ' '\012' |
grep -v '^$' |
LC_ALL=C sort -u
}
get_synopsis () {
sed -n '
/^NAME/,/'"$1"'/H
${
x
s/.*'"$1"' - \(.*\)/N_("\1")/
p
}' "Documentation/$1.txt"
}
define_categories () {
echo
echo "/* Command categories */"
bit=0
category_list "$1" |
while read cat
do
echo "#define CAT_$cat (1UL << $bit)"
bit=$(($bit+1))
done
test "$bit" -gt 32 && die "Urgh.. too many categories?"
}
define_category_names () {
echo
echo "/* Category names */"
echo "static const char *category_names[] = {"
bit=0
category_list "$1" |
while read cat
do
echo " \"$cat\", /* (1UL << $bit) */"
bit=$(($bit+1))
done
echo " NULL"
echo "};"
}
print_command_list () {
echo "static struct cmdname_help command_list[] = {"
command_list "$1" |
while read cmd rest
do
printf " { \"$cmd\", $(get_synopsis $cmd), 0"
printf " | CAT_%s" $rest
echo " },"
done
echo "};"
}
exclude_programs=
while test "--exclude-program" = "$1"
do
shift
exclude_programs="$exclude_programs -e \"^$1 \""
shift
done
echo "/* Automatically generated by generate-cmdlist.sh */
struct cmdname_help {
const char *name;
const char *help;
uint32_t category;
};
"
define_categories "$1"
echo
define_category_names "$1"
echo
print_command_list "$1"