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authorJustin Davis <jrcd83@gmail.com>2012-02-05 18:16:43 +0100
committerJustin Davis <jrcd83@gmail.com>2012-02-05 18:16:43 +0100
commitba97a989c2228e4840a0c58173b0d8f541911c69 (patch)
tree5e0fd4bae7c1270f3237f5415fef645baaf60c3d /bin/emitpkgtree
parent30669532cbd4439ed731778c08c8636491f8fc6e (diff)
downloadgenpkg-ba97a989c2228e4840a0c58173b0d8f541911c69.tar.gz
genpkg-ba97a989c2228e4840a0c58173b0d8f541911c69.tar.xz
Start of big rewrite of pkg tweaking.
The current setup is only really good for modifying PKGBUILD fields. The modification of PKGBUILD funcs is hackish. Instead, the tweaks will be written in a scripting language (like Io) where both PKGBUILD fields and function code can be easily modified. Fields should be able to be modified just like arrays, but with easier package matching going on. PKGBUILD bash functions are simply arrays of lines, but they are not as sophisticated. Instead they can only be appended to. Package files are represented as trees. Each file (PKGBUILD pkg.install) is a child of the top-level node of the tree. Each child of the file node is a section of the file (intro, body, end). Each section can also have its own intro, body, and end node. In this way each bash function is a node with its own intro, body, and end node. Prepending to a function appends to its intro node. Appending to a function appends to its end child node. The body cannot be modified.
Diffstat (limited to 'bin/emitpkgtree')
-rwxr-xr-xbin/emitpkgtree58
1 files changed, 58 insertions, 0 deletions
diff --git a/bin/emitpkgtree b/bin/emitpkgtree
new file mode 100755
index 0000000..ca12c59
--- /dev/null
+++ b/bin/emitpkgtree
@@ -0,0 +1,58 @@
+#!/usr/bin/env perl
+
+use warnings;
+use strict;
+
+my $PROG = 'flatlntree';
+
+sub parsetree
+{
+ my($name) = @_;
+ my($txt, $ln, @tree) = (q{}, $., $name);
+ while(<STDIN>){
+ if(/^BEGNODE (\S+)$/){
+ push @tree, $txt if($txt);
+ push @tree, parsetree($1);
+ $txt = q{};
+ }elsif(/^ENDNODE (\S+)$/){
+ if($1 ne $name){
+ print STDERR "$PROG: wrong ENDNODE:"
+ . qq{ '$1' at line $.}
+ . qq{ (in '$name' started at line $ln)\n};
+ exit 101;
+ }else{
+ last;
+ }
+ }else{
+ $txt .= $_;
+ }
+ }
+
+ push @tree, $txt if($txt);
+ return \@tree;
+}
+
+sub flatten
+{
+ my($tree) = @_;
+ if(ref $tree){
+ # skip name
+ return join q{}, map { flatten($tree->[$_]) } 1 .. $#$tree;
+ }else{
+ return $tree;
+ }
+}
+
+sub main
+{
+ my $top = parsetree('TOP');
+ @$top = grep { ref } @$top; # only keep sub-nodes
+ for my $n (@$top){
+ my $name = $n->[0];
+ print ">>> $name\n";
+ print flatten($n);
+ }
+ return 0;
+}
+
+exit main();