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commit: 1edf9e3bd37fede61a21d3b6a84542d29d8f3021 |
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Author: Zac Medico <zmedico <AT> gentoo <DOT> org> |
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AuthorDate: Thu Jun 2 12:50:54 2011 +0000 |
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Commit: Zac Medico <zmedico <AT> gentoo <DOT> org> |
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CommitDate: Thu Jun 2 12:50:54 2011 +0000 |
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URL: http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=1edf9e3b |
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|
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portageq: add new expand_virtual function |
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|
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Something like this was requested in bug #157357. Now that Gentoo has |
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migrated all virtuals to GLEP 37 new-style virtuals, this kind of |
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function may be helpful in order to resolve the currently installed |
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provider of a particular virtual in scripts like bootstrap.sh. |
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|
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Usage: |
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|
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portageq expand_virtual <root> <atom> |
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|
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Returns a \n separated list of atoms expanded from a |
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given virtual atom, excluding blocker atoms. Satisfied |
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virtual atoms are not included in the output, since |
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they are expanded to real atoms which are displayed. |
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Unsatisfied virtual atoms are displayed without |
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any expansion. The "match" command can be used to |
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resolve the returned atoms to specific installed |
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packages. |
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|
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Example input/output: |
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|
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$ portageq expand_virtual / virtual/jre |
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=dev-java/sun-jdk-1.6.0* |
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|
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$ portageq expand_virtual / virtual/jre:1.5 |
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dev-java/gcj-jdk |
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|
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$ portageq expand_virtual / virtual/package-manager |
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sys-apps/portage |
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|
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$ portageq expand_virtual / virtual/libc |
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sys-libs/glibc:2.2 |
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|
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$ portageq expand_virtual / virtual/os-headers |
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sys-kernel/linux-headers:0 |
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|
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--- |
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bin/portageq | 35 +++++++++++++++++++++++++++++++++++ |
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1 files changed, 35 insertions(+), 0 deletions(-) |
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|
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diff --git a/bin/portageq b/bin/portageq |
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index 069ece2..d6d9c17 100755 |
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--- a/bin/portageq |
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+++ b/bin/portageq |
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@@ -43,6 +43,7 @@ except ImportError: |
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del pym_path |
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|
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from portage import os |
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+from portage.dbapi._expand_new_virt import expand_new_virt |
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from portage.util import writemsg, writemsg_stdout |
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|
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def eval_atom_use(atom): |
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@@ -492,6 +493,40 @@ def match(argv): |
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print(cpv) |
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match.uses_root = True |
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|
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+def expand_virtual(argv): |
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+ """<root> <atom> |
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+ Returns a \\n separated list of atoms expanded from a |
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+ given virtual atom, excluding blocker atoms. Satisfied |
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+ virtual atoms are not included in the output, since |
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+ they are expanded to real atoms which are displayed. |
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+ Unsatisfied virtual atoms are displayed without |
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+ any expansion. The "match" command can be used to |
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+ resolve the returned atoms to specific installed |
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+ packages. |
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+ """ |
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+ if len(argv) != 2: |
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+ writemsg("ERROR: expected 2 parameters, got %d!\n" % len(argv), |
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+ noiselevel=-1) |
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+ return 2 |
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+ |
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+ root, atom = argv |
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+ |
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+ try: |
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+ results = list(expand_new_virt( |
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+ portage.db[root]["vartree"].dbapi, atom)) |
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+ except portage.exception.InvalidAtom: |
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+ writemsg("ERROR: Invalid atom: '%s'\n" % atom, |
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+ noiselevel=-1) |
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+ return 2 |
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+ |
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+ results.sort() |
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+ for x in results: |
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+ if not x.blocker: |
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+ writemsg_stdout("%s\n" % (x,)) |
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+ |
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+ return os.EX_OK |
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+ |
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+expand_virtual.uses_root = True |
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|
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def vdb_path(argv): |
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""" |