commit:     45e7aecd81e0ceee1871e65c7018314e69881bf5
Author:     Florian Schmaus <flow <AT> gentoo <DOT> org>
AuthorDate: Mon Jun 12 11:22:57 2023 +0000
Commit:     William Hubbs <williamh <AT> gentoo <DOT> org>
CommitDate: Mon Jun 12 20:22:46 2023 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=45e7aecd

go-module.eclass: inline _go-module_gomod_encode()

The only call site of _go-module_gomod_encode() was using $() in a loop
over EGO_SUM. This caused bash to fork() for every loop iteration, which
significantly affected the time it takes to "source" an ebuild using
EGO_SUM.

For example, "pkg pkg source =sys-cluster/k3s-1.23.3_p1" previously took
2.4 seconds. Inlining _go-module_gomod_encode() reduces this to
236 milliseconds.

This also adds missing 'local' declarations for some variables.

Signed-off-by: Florian Schmaus <flow <AT> gentoo.org>
Signed-off-by: William Hubbs <williamh <AT> gentoo.org>

 eclass/go-module.eclass | 44 ++++++++++++++++----------------------------
 1 file changed, 16 insertions(+), 28 deletions(-)

diff --git a/eclass/go-module.eclass b/eclass/go-module.eclass
index f97b69f591c8..6c58d7f26f07 100644
--- a/eclass/go-module.eclass
+++ b/eclass/go-module.eclass
@@ -262,7 +262,22 @@ go-module_set_globals() {
                        continue
                fi
 
-               _dir=$(_go-module_gomod_encode "${module}")
+               # Encode the name(path) of a Golang module in the format 
expected by Goproxy.
+               # Upper letters are replaced by their lowercase version with a 
'!' prefix.
+               # The transformed result of 'module' is stored in the '_dir' 
variable.
+               #
+               ## Python:
+               # return re.sub('([A-Z]{1})', r'!\1', s).lower()
+               ## Sed:
+               ## This uses GNU Sed extension \l to downcase the match
+               # echo "${module}" |sed 's,[A-Z],!\l&,g'
+               local re _dir lower
+               _dir="${module}"
+               re='(.*)([A-Z])(.*)'
+               while [[ ${_dir} =~ ${re} ]]; do
+                       lower='!'"${BASH_REMATCH[2],}"
+                       _dir="${BASH_REMATCH[1]}${lower}${BASH_REMATCH[3]}"
+               done
 
                for _ext in "${exts[@]}" ; do
                        # Relative URI within a GOPROXY for a file
@@ -496,33 +511,6 @@ go-module_live_vendor() {
        popd >& /dev/null || die
 }
 
-# @FUNCTION: _go-module_gomod_encode
-# @DEPRECATED: none
-# @DESCRIPTION:
-# Encode the name(path) of a Golang module in the format expected by Goproxy.
-#
-# Upper letters are replaced by their lowercase version with a '!' prefix.
-#
-_go-module_gomod_encode() {
-       ## Python:
-       # return re.sub('([A-Z]{1})', r'!\1', s).lower()
-
-       ## Sed:
-       ## This uses GNU Sed extension \l to downcase the match
-       #echo "${module}" |sed 's,[A-Z],!\l&,g'
-       #
-       # Bash variant:
-       debug-print-function "${FUNCNAME}" "$@"
-       #local re input lower
-       re='(.*)([A-Z])(.*)'
-       input="${1}"
-       while [[ ${input} =~ ${re} ]]; do
-               lower='!'"${BASH_REMATCH[2],}"
-               input="${BASH_REMATCH[1]}${lower}${BASH_REMATCH[3]}"
-       done
-       echo "${input}"
-}
-
 fi
 
 if [[ ! ${GO_OPTIONAL} ]]; then

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