[devel-distro] [PATCH 1/4] bin/archdep-filter: implement multi-matching

[Michael Shigorin <mike@altlinux.org>]

This has been inspired by a few commits that cared
for package availability reasons on a particular
architecture; the problem at hand is that pkglists
might need to include groups of packages that are
(un)available on groups of arches, and tackling that
with plain pkg@arch just results in combinatorial
explosion of that matrix.

Arches are handled one-by-one with a few hardcoded
macro substitutions.

Exploding a "pkg@arch1,arch2" string into a set of:

pkg@arch1
pkg@arch2

with subsequent archdep pruning would do the trick;
so here's another sed oneliner that does just that:

$ echo 'pkg@X86,ARM,ppc64le' |
  sed -r ':loop; s/^((([^@]+@)[^,]+)+),([^,]+)/\1\n\3\4/; t loop'
pkg@X86
pkg@ARM
pkg@ppc64le

See-also: 9601a9e7ce92c7a521fd154f59d8e17524f12a95
See-also: 5581dc91ec6f3330c338995d1cdfbca285298011
See-also: http://stackoverflow.com/a/55781741/561921
---
 bin/archdep-filter | 1 +
 doc/archdep.txt    | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/bin/archdep-filter b/bin/archdep-filter
index 69ff9c0a4..58cd076e9 100755
--- a/bin/archdep-filter
+++ b/bin/archdep-filter
@@ -34,6 +34,7 @@ esac
 
 # NB: pipe runs in parallel => faster than -e -e
 cat ${f:+"$f"} |
+sed -r  ':loop; s/^((([^@]+@)[^,]+)+),([a-zA-Z0-9_]+)/\1\n\3\4/; t loop' |
 sed -rn "s/\<([^@ ]*)\>|\<([^@ ]*)@$A\>/\1\2/pg" |
 sed -rn "s/\<([^@ ]*)\>|\<[^@ ]*@\!$A\> */\1/pg" |
 sed -r  "s/\<([^@ ]*)@IA32\>/\1@i586 i586-\1@x86_64/g" |
diff --git a/doc/archdep.txt b/doc/archdep.txt
index 4a33233ef..d1a1c3e91 100644
--- a/doc/archdep.txt
+++ b/doc/archdep.txt
@@ -48,6 +48,11 @@
 ARM (armh или aarch64), а также выборка "для любой архитектуры, кроме"
 (например, @!E2K, или "@!ARM).
 
+С версии 1.4.21 поддерживается перечисление архитектур через запятую
+после "@":
+
+  LibreOffice-still@X86,aarch64,ppc64le,mipsel
+
 Для преобразования можно воспользоваться следующей командой:
 
   sed -r -e 's/@I586_ONLY@([^\t ]+)/\1@i586/g' \
-- 
2.33.0