convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
SOURCES=$(wildcard *.[0-9].txt)
MAN=$(SOURCES:%.txt=%)
HTML=$(SOURCES:%.txt=%.html)
PREFIX=/usr/local
MANDIR=$(PREFIX)/share/man
INSTALL=install -c
all: man html
man: $(MAN)
html: $(HTML)
hg.1.txt: hg.1.gendoc.txt
touch hg.1.txt
hg.1.gendoc.txt: ../mercurial/commands.py ../mercurial/help.py
python gendoc.py > $@
%: %.xml
xmlto man $*.xml
%.xml: %.txt
asciidoc -d manpage -b docbook $*.txt
%.html: %.txt
asciidoc -b html4 $*.txt || asciidoc -b html $*.txt
MANIFEST: man html
# versionned files are already in the main MANIFEST
$(RM) $@
for i in $(MAN) $(HTML) hg.1.gendoc.txt; do \
echo "doc/$$i" >> $@ ; \
done
install: man
for i in $(MAN) ; do \
subdir=`echo $$i | sed -n 's/..*\.\([0-9]\)$$/man\1/p'` ; \
mkdir -p $(DESTDIR)$(MANDIR)/$$subdir ; \
$(INSTALL) $$i $(DESTDIR)$(MANDIR)/$$subdir ; \
done
clean:
$(RM) $(MAN) $(MAN:%=%.xml) $(MAN:%=%.html) *.[0-9].gendoc.txt MANIFEST