commit:     ea08b1a398b28d8e03fee32787c70b227f763b02
Author:     Sam James <sam <AT> gentoo <DOT> org>
AuthorDate: Mon Jan 16 17:24:37 2023 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Mon Jan 16 20:55:05 2023 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ea08b1a3

unpacker.eclass: flatten unpacker_src_uri_depends dependencies

Populate an associative array as we iterate over SRC_URI to collect needed
dependencies to avoid recording the same dependencies twice.

This still doesn't handle USE flags, but it's significantly better than before,
as we won't repeatedly emit the same dependency if there's more than one 
distfile
in SRC_URI with the same suffix.

Closes: https://bugs.gentoo.org/891133
Thanks-to: Ionen Wolkens <ionen <AT> gentoo.org>
Signed-off-by: Sam James <sam <AT> gentoo.org>

 eclass/unpacker.eclass | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/eclass/unpacker.eclass b/eclass/unpacker.eclass
index 326b2fa67524..44ff2af5acf3 100644
--- a/eclass/unpacker.eclass
+++ b/eclass/unpacker.eclass
@@ -596,7 +596,8 @@ unpacker_src_unpack() {
 #
 # Note: USE flags are not yet handled.
 unpacker_src_uri_depends() {
-       local uri deps d
+       local uri
+       local -A deps
 
        if [[ $# -eq 0 ]] ; then
                # Disable path expansion for USE conditionals. #654960
@@ -606,20 +607,19 @@ unpacker_src_uri_depends() {
        fi
 
        for uri in "$@" ; do
-               local m=${uri,,}
-               case ${m} in
+               case ${uri,,} in
                *.cpio.*|*.cpio)
-                       d="app-arch/cpio" ;;
+                       deps[cpio]="app-arch/cpio" ;;
                *.rar)
-                       d="app-arch/unrar" ;;
+                       deps[rar]="app-arch/unrar" ;;
                *.7z)
-                       d="app-arch/p7zip" ;;
+                       deps[7z]="app-arch/p7zip" ;;
                *.xz)
-                       d="app-arch/xz-utils" ;;
+                       deps[xz]="app-arch/xz-utils" ;;
                *.zip)
-                       d="app-arch/unzip" ;;
+                       deps[zip]="app-arch/unzip" ;;
                *.lz)
-                       d="
+                       deps[lz]="
                                || (
                                        >=app-arch/xz-utils-5.4.0
                                        app-arch/plzip
@@ -629,18 +629,17 @@ unpacker_src_uri_depends() {
                        "
                        ;;
                *.zst)
-                       d="app-arch/zstd" ;;
+                       deps[zst]="app-arch/zstd" ;;
                *.lha|*.lzh)
-                       d="app-arch/lha" ;;
+                       deps[lhah]="app-arch/lha" ;;
                *.lz4)
-                       d="app-arch/lz4" ;;
+                       deps[lz4]="app-arch/lz4" ;;
                *.lzo)
-                       d="app-arch/lzop" ;;
+                       deps[lzo]="app-arch/lzop" ;;
                esac
-               deps+=" ${d}"
        done
 
-       echo "${deps}"
+       echo "${deps[*]}"
 }
 
 EXPORT_FUNCTIONS src_unpack

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