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Pino Toscano

2013-Dec-05 15:30 UTC

[Libguestfs] [PATCH 0/3] Small improvements to i18n extraction/handling

Hi,

here there are few patches to improve the extraction of translatable
messages, and the usage of messages with plural forms.

Pino Toscano (3):
  po: fix broken message extraction
  po: fix dependencies for libguestfs.pot extraction
  fish: improve the command error messages

 generator/fish.ml | 20 ++++++++++++++++----
 po/Makefile.am    | 24 +++++++-----------------
 2 files changed, 23 insertions(+), 21 deletions(-)

Thanks,
-- 
Pino Toscano

-- 
1.8.3.1

Pino Toscano

2013-Dec-05 15:30 UTC

head link

[Libguestfs] [PATCH 1/3] po: fix broken message extraction

Extracting separately the pot for the various languages and then
creating manually the global pot (by manually joining the above ones
after having stripped their headers) is wrong, since other than being
an hack it can create an invalid pot when the same message appears in
sources written in different languages.

Instead, a cleaner and safer solution is to first let ocaml-gettext
(if available) extract the messages for the ml files, and then use
xgettext to extract the messages for the other languages, joining the
new messages to the existing (or not) pot file.
---
 po/Makefile.am | 22 ++++++----------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/po/Makefile.am b/po/Makefile.am
index e2bfe45..b0a8038 100644
--- a/po/Makefile.am
+++ b/po/Makefile.am
@@ -66,24 +66,14 @@ XGETTEXT_ARGS = \
 	--directory=$(top_srcdir)
 
 $(DOMAIN).pot: Makefile $(POTFILES) $(POTFILES-pl) $(POTFILES-ml)
-	rm -f $@-t $@-pl $@-ml
-	$(XGETTEXT) -o $@-t $(XGETTEXT_ARGS) \
-	  --files-from=$(abs_srcdir)/POTFILES
-	$(XGETTEXT) -o $@-pl $(XGETTEXT_ARGS) --language=Perl \
-	  --files-from=$(abs_srcdir)/POTFILES-pl
-# Don't trust msgcat since it will definitely screw up.  Instead, chop
-# the head from the second file and append it to the first.
-	echo >> $@-t
-	awk '/^#:/{i++}i{print}' < $@-pl >> $@-t
-	rm $@-pl
+	rm -f $@-t
 if HAVE_OCAML_GETTEXT
-	$(OCAML_GETTEXT) --action extract --extract-pot $@-ml $(POTFILES_ML)
-# Don't trust msgcat since it will definitely screw up.  Instead, chop
-# the head from the second file and append it to the first.
-	echo >> $@-t
-	awk '/^#:/{i++}i{print}' < $@-ml >> $@-t
-	rm $@-ml
+	$(OCAML_GETTEXT) --action extract --extract-pot $@-t $(POTFILES_ML)
 endif
+	$(XGETTEXT) -j -o $@-t $(XGETTEXT_ARGS) \
+	  --files-from=$(abs_srcdir)/POTFILES
+	$(XGETTEXT) -j -o $@-t $(XGETTEXT_ARGS) --language=Perl \
+	  --files-from=$(abs_srcdir)/POTFILES-pl
 	mv $@-t $@
 
 %.po: $(DOMAIN).pot
-- 
1.8.3.1

Pino Toscano

2013-Dec-05 15:30 UTC

head link

[Libguestfs] [PATCH 2/3] po: fix dependencies for libguestfs.pot extraction

Fix the dependencies of the libguestfs.pot target: other than using the
right make variables holding the contents of the POTFILES, depend also
on the POTFILES themselves.
---
 po/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/po/Makefile.am b/po/Makefile.am
index b0a8038..a8343ec 100644
--- a/po/Makefile.am
+++ b/po/Makefile.am
@@ -65,7 +65,7 @@ XGETTEXT_ARGS = \
 	--msgid-bugs-address="$(MSGID_BUGS_ADDRESS)" \
 	--directory=$(top_srcdir)
 
-$(DOMAIN).pot: Makefile $(POTFILES) $(POTFILES-pl) $(POTFILES-ml)
+$(DOMAIN).pot: Makefile POTFILES $(POTFILES) POTFILES-pl $(POTFILES_PL)
POTFILES-ml $(POTFILES_ML)
 	rm -f $@-t
 if HAVE_OCAML_GETTEXT
 	$(OCAML_GETTEXT) --action extract --extract-pot $@-t $(POTFILES_ML)
-- 
1.8.3.1

Pino Toscano

2013-Dec-05 15:30 UTC

head link

[Libguestfs] [PATCH 3/3] fish: improve the command error messages

- when a command needs no parameters, tell that explicitly instead of
  "command should have 0 parameters"
- use gettext's plural form when printing the number of required
  arguments
- improve the error message for a variable number of parameters limited
  only in the maximum number of them, using also a plural form
---
 generator/fish.ml | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/generator/fish.ml b/generator/fish.ml
index 65f1acb..da0584b 100644
--- a/generator/fish.ml
+++ b/generator/fish.ml
@@ -362,12 +362,24 @@ Guestfish will prompt for these separately."
 
       if argc_minimum = argc_maximum then (
         pr "  if (argc != %d) {\n" argc_minimum;
-        pr "    fprintf (stderr, _(\"%%s should have %%d
parameter(s)\\n\"), cmd, %d);\n"
-          argc_minimum;
+        if argc_minimum = 0 then (
+          pr "    fprintf (stderr, _(\"%%s should have no
parameters\\n\"), cmd);\n";
+        ) else (
+          pr "    fprintf (stderr, ngettext(\"%%s should have %%d
parameter\\n\",\n";
+          pr "                              \"%%s should have %%d
parameters\\n\",\n";
+          pr "                              %d),\n"
+            argc_minimum;
+          pr "                     cmd, %d);\n"
+            argc_minimum;
+        )
       ) else if argc_minimum = 0 then (
         pr "  if (argc > %d) {\n" argc_maximum;
-        pr "    fprintf (stderr, _(\"%%s should have %%d-%%d
parameter(s)\\n\"), cmd, %d, %d);\n"
-          argc_minimum argc_maximum;
+        pr "    fprintf (stderr, ngettext(\"%%s should have at most
%%d parameter\\n\",\n";
+        pr "                              \"%%s should have at most
%%d parameters\\n\",\n";
+        pr "                              %d),\n"
+          argc_maximum;
+        pr "                     cmd, %d);\n"
+          argc_maximum;
       ) else (
         pr "  if (argc < %d || argc > %d) {\n" argc_minimum
argc_maximum;
         pr "    fprintf (stderr, _(\"%%s should have %%d-%%d
parameter(s)\\n\"), cmd, %d, %d);\n"
-- 
1.8.3.1

Richard W.M. Jones

2013-Dec-05 15:53 UTC

head link

Re: [Libguestfs] [PATCH 2/3] po: fix dependencies for libguestfs.pot extraction

On Thu, Dec 05, 2013 at 04:30:05PM +0100, Pino Toscano
wrote:> Fix the dependencies of the libguestfs.pot target: other than using the
> right make variables holding the contents of the POTFILES, depend also
> on the POTFILES themselves.
> ---
>  po/Makefile.am | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/po/Makefile.am b/po/Makefile.am
> index b0a8038..a8343ec 100644
> --- a/po/Makefile.am
> +++ b/po/Makefile.am
> @@ -65,7 +65,7 @@ XGETTEXT_ARGS = \
>  	--msgid-bugs-address="$(MSGID_BUGS_ADDRESS)" \
>  	--directory=$(top_srcdir)
>  
> -$(DOMAIN).pot: Makefile $(POTFILES) $(POTFILES-pl) $(POTFILES-ml)
> +$(DOMAIN).pot: Makefile POTFILES $(POTFILES) POTFILES-pl $(POTFILES_PL)
POTFILES-ml $(POTFILES_ML)
>  	rm -f $@-t
>  if HAVE_OCAML_GETTEXT
>  	$(OCAML_GETTEXT) --action extract --extract-pot $@-t $(POTFILES_ML)
So I agree that $(POTFILES-pl) is definitely wrong.  Not sure exactly
what we were thinking about there ...

But, won't the addition of the literal file names break separate
compilation?  In particular, $(POTFILES_PL) is supposed to be the
correct path to the file POTFILES-pl (and correspondingly for the
other files), so it shouldn't be necessary to list both POTFILES-pl
and $(POTFILES_PL).

Separate compilation is something that Debian cares about a lot
because they have to rebuild libguestfs several times in series for
different python versions etc.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Fedora Windows cross-compiler. Compile Windows programs, test, and
build Windows installers. Over 100 libraries supported.
http://fedoraproject.org/wiki/MinGW

Richard W.M. Jones

2013-Dec-05 15:58 UTC

head link

Re: [Libguestfs] [PATCH 3/3] fish: improve the command error messages

On Thu, Dec 05, 2013 at 04:30:06PM +0100, Pino Toscano
wrote:> - when a command needs no parameters, tell that explicitly instead of
>   "command should have 0 parameters"
> - use gettext's plural form when printing the number of required
>   arguments
> - improve the error message for a variable number of parameters limited
>   only in the maximum number of them, using also a plural form
> ---
>  generator/fish.ml | 20 ++++++++++++++++----
>  1 file changed, 16 insertions(+), 4 deletions(-)
> 
> diff --git a/generator/fish.ml b/generator/fish.ml
> index 65f1acb..da0584b 100644
> --- a/generator/fish.ml
> +++ b/generator/fish.ml
> @@ -362,12 +362,24 @@ Guestfish will prompt for these separately."
>  
>        if argc_minimum = argc_maximum then (
>          pr "  if (argc != %d) {\n" argc_minimum;
> -        pr "    fprintf (stderr, _(\"%%s should have %%d
parameter(s)\\n\"), cmd, %d);\n"
> -          argc_minimum;
> +        if argc_minimum = 0 then (
> +          pr "    fprintf (stderr, _(\"%%s should have no
parameters\\n\"), cmd);\n";
> +        ) else (
> +          pr "    fprintf (stderr, ngettext(\"%%s should have
%%d parameter\\n\",\n";
> +          pr "                              \"%%s should have
%%d parameters\\n\",\n";
> +          pr "                              %d),\n"
> +            argc_minimum;
> +          pr "                     cmd, %d);\n"
> +            argc_minimum;
> +        )
>        ) else if argc_minimum = 0 then (
>          pr "  if (argc > %d) {\n" argc_maximum;
> -        pr "    fprintf (stderr, _(\"%%s should have %%d-%%d
parameter(s)\\n\"), cmd, %d, %d);\n"
> -          argc_minimum argc_maximum;
> +        pr "    fprintf (stderr, ngettext(\"%%s should have at
most %%d parameter\\n\",\n";
> +        pr "                              \"%%s should have at
most %%d parameters\\n\",\n";
> +        pr "                              %d),\n"
> +          argc_maximum;
> +        pr "                     cmd, %d);\n"
> +          argc_maximum;
>        ) else (
>          pr "  if (argc < %d || argc > %d) {\n"
argc_minimum argc_maximum;
>          pr "    fprintf (stderr, _(\"%%s should have %%d-%%d
parameter(s)\\n\"), cmd, %d, %d);\n"
> -- 
> 1.8.3.1
ACK.

I tested this with various combinations of commands:

$ ./run ./fish/guestfish version foo
version should have no parameters
type 'help version' for help on version
$ ./run ./fish/guestfish set-qemu foo bar
set-qemu should have 1 parameter
type 'help set-qemu' for help on set-qemu
$ ./run ./fish/guestfish set-qemu foo bar baz
set-qemu should have 1 parameter
type 'help set-qemu' for help on set-qemu
$ ./run ./fish/guestfish lvcreate foo
lvcreate should have 3 parameters
type 'help lvcreate' for help on lvcreate
$ ./run ./fish/guestfish umount-local foo bar
umount-local should have at most 1 parameter
type 'help umount-local' for help on umount-local

[Apparently only umount-local uses the argc > argc_maximum case]

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Fedora Windows cross-compiler. Compile Windows programs, test, and
build Windows installers. Over 100 libraries supported.
http://fedoraproject.org/wiki/MinGW

Richard W.M. Jones

2013-Dec-05 16:01 UTC

head link

Re: [Libguestfs] [PATCH 1/3] po: fix broken message extraction

On Thu, Dec 05, 2013 at 04:30:04PM +0100, Pino Toscano
wrote:> Extracting separately the pot for the various languages and then
> creating manually the global pot (by manually joining the above ones
> after having stripped their headers) is wrong, since other than being
> an hack it can create an invalid pot when the same message appears in
> sources written in different languages.
> 
> Instead, a cleaner and safer solution is to first let ocaml-gettext
> (if available) extract the messages for the ml files, and then use
> xgettext to extract the messages for the other languages, joining the
> new messages to the existing (or not) pot file.
> ---
>  po/Makefile.am | 22 ++++++----------------
>  1 file changed, 6 insertions(+), 16 deletions(-)
> 
> diff --git a/po/Makefile.am b/po/Makefile.am
> index e2bfe45..b0a8038 100644
> --- a/po/Makefile.am
> +++ b/po/Makefile.am
> @@ -66,24 +66,14 @@ XGETTEXT_ARGS = \
>  	--directory=$(top_srcdir)
>  
>  $(DOMAIN).pot: Makefile $(POTFILES) $(POTFILES-pl) $(POTFILES-ml)
> -	rm -f $@-t $@-pl $@-ml
> -	$(XGETTEXT) -o $@-t $(XGETTEXT_ARGS) \
> -	  --files-from=$(abs_srcdir)/POTFILES
> -	$(XGETTEXT) -o $@-pl $(XGETTEXT_ARGS) --language=Perl \
> -	  --files-from=$(abs_srcdir)/POTFILES-pl
> -# Don't trust msgcat since it will definitely screw up.  Instead, chop
> -# the head from the second file and append it to the first.
> -	echo >> $@-t
> -	awk '/^#:/{i++}i{print}' < $@-pl >> $@-t
> -	rm $@-pl
> +	rm -f $@-t
>  if HAVE_OCAML_GETTEXT
> -	$(OCAML_GETTEXT) --action extract --extract-pot $@-ml $(POTFILES_ML)
> -# Don't trust msgcat since it will definitely screw up.  Instead, chop
> -# the head from the second file and append it to the first.
> -	echo >> $@-t
> -	awk '/^#:/{i++}i{print}' < $@-ml >> $@-t
> -	rm $@-ml
> +	$(OCAML_GETTEXT) --action extract --extract-pot $@-t $(POTFILES_ML)
>  endif
> +	$(XGETTEXT) -j -o $@-t $(XGETTEXT_ARGS) \
> +	  --files-from=$(abs_srcdir)/POTFILES
> +	$(XGETTEXT) -j -o $@-t $(XGETTEXT_ARGS) --language=Perl \
> +	  --files-from=$(abs_srcdir)/POTFILES-pl
>  	mv $@-t $@
>  
>  %.po: $(DOMAIN).pot
> -- 
> 1.8.3.1
ACK.

This appears to be OK, and the results look sane:

$ ll po/libguestfs.pot*
-rw-rw-r--. 1 rjones rjones 180001 Dec  5 15:52 po/libguestfs.pot
-rw-rw-r--. 1 rjones rjones 178207 Dec  5 15:40 po/libguestfs.pot-backup

and I also checked the pot file (which is basically impossible) but it
doesn't look as if messages are being dropped.

Thanks, I'm going to push 1/3 and 3/3 for now.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org

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