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gcc/gcc/ABOUT-GCC-NLS
Jeff Law d70283ce50 Initial revision 
From-SVN: r21536
1998-08-02 00:46:43 -06:00

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Notes on GCC's Native Language Support
GCC's Native Language Support (NLS) is relatively new and
experimental, so NLS is currently disabled by default. Use
configure's --enable-nls option to enable it. Eventually, NLS will be
enabled by default, and you'll need --disable-nls to disable it. You
must enable NLS in order to make a GCC distribution.
By and large, only diagnostic messages have been internationalized.
Some work remains in other areas; for example, GCC does not yet allow
non-ASCII letters in identifiers.
Not all of GCC's diagnostic messages have been internationalized.
Programs like `enquire' and `genattr' are not internationalized, as
their users are GCC maintainers who typically need to be able to read
English anyway; internationalizing them would thus entail needless
work for the human translators. And no one has yet gotten around to
internationalizing the messages in the C++ compiler, or in the
specialized MIPS-specific programs mips-tdump and mips-tfile.
The GCC library should not contain any messages that need
internationalization, because it operates below the
internationalization library.
Currently, the only language translation supplied is en_UK (British English).
Unlike some other GNU programs, the GCC sources contain few instances
of explicit translation calls like _("string"). Instead, the
diagnostic printing routines automatically translate their arguments.
For example, GCC source code should not contain calls like `error
(_("unterminated comment"))'; it should contain calls like `error
("unterminated comment")' instead, as it is the `error' function's
responsibility to translate the message before the user sees it.
By convention, any function parameter in the GCC sources whose name
ends in `msgid' is expected to be a message requiring translation.
For example, the `error' function's first parameter is named `msgid'.
GCC's exgettext script uses this convention to determine which
function parameter strings need to be translated. The exgettext
script also assumes that any occurrence of `%eMSGID}' on a source
line, where MSGID does not contain `%' or `}', corresponds to a
message MSGID that requires translation; this is needed to identify
diagnostics in GCC spec strings.
If you enable NLS and modify source files, you'll need to use a
special version of the GNU gettext package to propagate the
modifications to the translation tables. Apply the following patch
(use `patch -p0') to GNU gettext 0.10.35, which you can retrieve from:
ftp://alpha.gnu.org/gnu/gettext-0.10.35.tar.gz
This patch has been submitted to the GNU gettext maintainer, so
eventually we shouldn't need this special gettext version.
This patch is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This patch is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this patch; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
1998-07-26 Paul Eggert <eggert@twinsun.com>
* po/Makefile.in.in (maintainer-clean): Remove cat-id-tbl.c and
stamp-cat-id.
1998-07-24 Paul Eggert <eggert@twinsun.com>
* po/Makefile.in.in (cat-id-tbl.o): Depend on
$(top_srcdir)/intl/libgettext.h, not ../intl/libgettext.h.
1998-07-20 Paul Eggert <eggert@twinsun.com>
* po/Makefile.in.in (.po.pox, all-yes, $(srcdir)/cat-id-tbl.c,
$(srcdir)/stamp-cat-id, update-po): Prepend `$(srcdir)/' to
files built in the source directory; this is needed for
VPATH-based make in Solaris 2.6.
1998-07-17 Paul Eggert <eggert@twinsun.com>
Add support for user-specified argument numbers for keywords.
Extract all strings from a keyword arg, not just the first one.
Handle parenthesized commas inside keyword args correctly.
Warn about nested keywords.
* doc/gettext.texi: Document --keyword=id:argnum.
* src/xgettext.c (scan_c_file):
Warn about nested keywords, e.g. _(_("xxx")).
Warn also about not-yet-implemented but allowed nesting, e.g.
dcgettext(..._("xxx")..., "yyy").
Get all strings in a keyword arg, not just the first one.
Handle parenthesized commas inside keyword args correctly.
* src/xget-lex.h (enum xgettext_token_type_ty):
Replace xgettext_token_type_keyword1 and
xgettext_token_type_keyword2 with just plain
xgettext_token_type_keyword; it now has argnum value.
Add xgettext_token_type_rp.
(struct xgettext_token_ty): Add argnum member.
line_number and file_name are now also set for
xgettext_token_type_keyword.
(xgettext_lex_keyword): Arg is const char *.
* src/xget-lex.c: Include "hash.h".
(enum token_type_ty): Add token_type_rp.
(keywords): Now a hash table.
(phase5_get): Return token_type_rp for ')'.
(xgettext_lex, xgettext_lex_keyword): Add support for keyword argnums.
(xgettext_lex): Return xgettext_token_type_rp for ')'.
Report keyword argnum, line number, and file name back to caller.
1998-07-09 Paul Eggert <eggert@twinsun.com>
* intl/Makefile.in (uninstall):
Do nothing unless $(PACKAGE) is gettext.
===================================================================
RCS file: doc/gettext.texi,v
retrieving revision 0.10.35.0
retrieving revision 0.10.35.1
diff -pu -r0.10.35.0 -r0.10.35.1
--- doc/gettext.texi 1998/05/01 05:53:32 0.10.35.0
+++ doc/gettext.texi 1998/07/18 00:25:15 0.10.35.1
@@ -1854,13 +1854,19 @@ List of directories searched for input f
Join messages with existing file.
@item -k @var{word}
-@itemx --keyword[=@var{word}]
-Additonal keyword to be looked for (without @var{word} means not to
+@itemx --keyword[=@var{keywordspec}]
+Additonal keyword to be looked for (without @var{keywordspec} means not to
use default keywords).
-The default keywords, which are always looked for if not explicitly
-disabled, are @code{gettext}, @code{dgettext}, @code{dcgettext} and
-@code{gettext_noop}.
+If @var{keywordspec} is a C identifer @var{id}, @code{xgettext} looks
+for strings in the first argument of each call to the function or macro
+@var{id}. If @var{keywordspec} is of the form
+@samp{@var{id}:@var{argnum}}, @code{xgettext} looks for strings in the
+@var{argnum}th argument of the call.
+
+The default keyword specifications, which are always looked for if not
+explicitly disabled, are @code{gettext}, @code{dgettext:2},
+@code{dcgettext:2} and @code{gettext_noop}.
@item -m [@var{string}]
@itemx --msgstr-prefix[=@var{string}]
===================================================================
RCS file: intl/Makefile.in,v
retrieving revision 0.10.35.0
retrieving revision 0.10.35.1
diff -pu -r0.10.35.0 -r0.10.35.1
--- intl/Makefile.in 1998/04/27 21:53:18 0.10.35.0
+++ intl/Makefile.in 1998/07/09 21:39:18 0.10.35.1
@@ -143,10 +143,14 @@ install-data: all
installcheck:
uninstall:
- dists="$(DISTFILES.common)"; \
- for file in $$dists; do \
- rm -f $(gettextsrcdir)/$$file; \
- done
+ if test "$(PACKAGE)" = "gettext"; then \
+ dists="$(DISTFILES.common)"; \
+ for file in $$dists; do \
+ rm -f $(gettextsrcdir)/$$file; \
+ done
+ else \
+ : ; \
+ fi
info dvi:
===================================================================
RCS file: src/xget-lex.c,v
retrieving revision 0.10.35.0
retrieving revision 0.10.35.1
diff -pu -r0.10.35.0 -r0.10.35.1
--- src/xget-lex.c 1998/07/09 22:49:48 0.10.35.0
+++ src/xget-lex.c 1998/07/18 00:25:15 0.10.35.1
@@ -33,6 +33,7 @@
#include "error.h"
#include "system.h"
#include "libgettext.h"
+#include "hash.h"
#include "str-list.h"
#include "xget-lex.h"
@@ -83,6 +84,7 @@ enum token_type_ty
token_type_eoln,
token_type_hash,
token_type_lp,
+ token_type_rp,
token_type_comma,
token_type_name,
token_type_number,
@@ -109,7 +111,7 @@ static FILE *fp;
static int trigraphs;
static int cplusplus_comments;
static string_list_ty *comment;
-static string_list_ty *keywords;
+static hash_table keywords;
static int default_keywords = 1;
/* These are for tracking whether comments count as immediately before
@@ -941,6 +943,10 @@ phase5_get (tp)
tp->type = token_type_lp;
return;
+ case ')':
+ tp->type = token_type_rp;
+ return;
+
case ',':
tp->type = token_type_comma;
return;
@@ -1179,6 +1185,7 @@ xgettext_lex (tp)
while (1)
{
token_ty token;
+ void *keyword_value;
phase8_get (&token);
switch (token.type)
@@ -1213,17 +1220,20 @@ xgettext_lex (tp)
if (default_keywords)
{
xgettext_lex_keyword ("gettext");
- xgettext_lex_keyword ("dgettext");
- xgettext_lex_keyword ("dcgettext");
+ xgettext_lex_keyword ("dgettext:2");
+ xgettext_lex_keyword ("dcgettext:2");
xgettext_lex_keyword ("gettext_noop");
default_keywords = 0;
}
- if (string_list_member (keywords, token.string))
- {
- tp->type = (strcmp (token.string, "dgettext") == 0
- || strcmp (token.string, "dcgettext") == 0)
- ? xgettext_token_type_keyword2 : xgettext_token_type_keyword1;
+ if (find_entry (&keywords, token.string, strlen (token.string),
+ &keyword_value)
+ == 0)
+ {
+ tp->type = xgettext_token_type_keyword;
+ tp->argnum = (int) keyword_value;
+ tp->line_number = token.line_number;
+ tp->file_name = logical_file_name;
}
else
tp->type = xgettext_token_type_symbol;
@@ -1236,6 +1246,12 @@ xgettext_lex (tp)
tp->type = xgettext_token_type_lp;
return;
+ case token_type_rp:
+ last_non_comment_line = newline_count;
+
+ tp->type = xgettext_token_type_rp;
+ return;
+
case token_type_comma:
last_non_comment_line = newline_count;
@@ -1263,16 +1279,32 @@ xgettext_lex (tp)
void
xgettext_lex_keyword (name)
- char *name;
+ const char *name;
{
if (name == NULL)
default_keywords = 0;
else
{
- if (keywords == NULL)
- keywords = string_list_alloc ();
+ int argnum;
+ size_t len;
+ const char *sp;
+
+ if (keywords.table == NULL)
+ init_hash (&keywords, 100);
+
+ sp = strchr (name, ':');
+ if (sp)
+ {
+ len = sp - name;
+ argnum = atoi (sp + 1);
+ }
+ else
+ {
+ len = strlen (name);
+ argnum = 1;
+ }
- string_list_append_unique (keywords, name);
+ insert_entry (&keywords, name, len, (void *) argnum);
}
}
===================================================================
RCS file: src/xget-lex.h,v
retrieving revision 0.10.35.0
retrieving revision 0.10.35.1
diff -pu -r0.10.35.0 -r0.10.35.1
--- src/xget-lex.h 1998/07/09 22:49:48 0.10.35.0
+++ src/xget-lex.h 1998/07/18 00:25:15 0.10.35.1
@@ -23,9 +23,9 @@ Foundation, Inc., 59 Temple Place - Suit
enum xgettext_token_type_ty
{
xgettext_token_type_eof,
- xgettext_token_type_keyword1,
- xgettext_token_type_keyword2,
+ xgettext_token_type_keyword,
xgettext_token_type_lp,
+ xgettext_token_type_rp,
xgettext_token_type_comma,
xgettext_token_type_string_literal,
xgettext_token_type_symbol
@@ -37,8 +37,14 @@ struct xgettext_token_ty
{
xgettext_token_type_ty type;
- /* These 3 are only set for xgettext_token_type_string_literal. */
+ /* This 1 is set only for xgettext_token_type_keyword. */
+ int argnum;
+
+ /* This 1 is set only for xgettext_token_type_string_literal. */
char *string;
+
+ /* These 2 are set only for xgettext_token_type_keyword and
+ xgettext_token_type_string_literal. */
int line_number;
char *file_name;
};
@@ -50,7 +56,7 @@ void xgettext_lex PARAMS ((xgettext_toke
const char *xgettext_lex_comment PARAMS ((size_t __n));
void xgettext_lex_comment_reset PARAMS ((void));
/* void xgettext_lex_filepos PARAMS ((char **, int *)); FIXME needed? */
-void xgettext_lex_keyword PARAMS ((char *__name));
+void xgettext_lex_keyword PARAMS ((const char *__name));
void xgettext_lex_cplusplus PARAMS ((void));
void xgettext_lex_trigraphs PARAMS ((void));
===================================================================
RCS file: src/xgettext.c,v
retrieving revision 0.10.35.0
retrieving revision 0.10.35.1
diff -pu -r0.10.35.0 -r0.10.35.1
--- src/xgettext.c 1998/07/09 22:49:48 0.10.35.0
+++ src/xgettext.c 1998/07/18 00:25:15 0.10.35.1
@@ -835,6 +835,8 @@ scan_c_file(filename, mlp, is_cpp_file)
int is_cpp_file;
{
int state;
+ int commas_to_skip; /* defined only when in states 1 and 2 */
+ int paren_nesting; /* defined only when in state 2 */
/* Inform scanner whether we have C++ files or not. */
if (is_cpp_file)
@@ -854,63 +856,79 @@ scan_c_file(filename, mlp, is_cpp_file)
{
xgettext_token_ty token;
- /* A simple state machine is used to do the recognising:
+ /* A state machine is used to do the recognising:
State 0 = waiting for something to happen
- State 1 = seen one of our keywords with string in first parameter
- State 2 = was in state 1 and now saw a left paren
- State 3 = seen one of our keywords with string in second parameter
- State 4 = was in state 3 and now saw a left paren
- State 5 = waiting for comma after being in state 4
- State 6 = saw comma after being in state 5 */
+ State 1 = seen one of our keywords
+ State 2 = waiting for part of an argument */
xgettext_lex (&token);
switch (token.type)
{
- case xgettext_token_type_keyword1:
+ case xgettext_token_type_keyword:
+ if (!extract_all && state == 2)
+ {
+ if (commas_to_skip == 0)
+ {
+ error (0, 0,
+ _("%s:%d: warning: keyword nested in keyword arg"),
+ token.file_name, token.line_number);
+ continue;
+ }
+
+ /* Here we should nest properly, but this would require a
+ potentially unbounded stack. We haven't run across an
+ example that needs this functionality yet. For now,
+ we punt and forget the outer keyword. */
+ error (0, 0,
+ _("%s:%d: warning: keyword between outer keyword and its arg"),
+ token.file_name, token.line_number);
+ }
+ commas_to_skip = token.argnum - 1;
state = 1;
continue;
- case xgettext_token_type_keyword2:
- state = 3;
- continue;
-
case xgettext_token_type_lp:
switch (state)
{
case 1:
+ paren_nesting = 0;
state = 2;
break;
- case 3:
- state = 4;
+ case 2:
+ paren_nesting++;
break;
- default:
- state = 0;
}
continue;
+ case xgettext_token_type_rp:
+ if (state == 2 && paren_nesting != 0)
+ paren_nesting--;
+ else
+ state = 0;
+ continue;
+
case xgettext_token_type_comma:
- state = state == 5 ? 6 : 0;
+ if (state == 2 && commas_to_skip != 0)
+ commas_to_skip -= paren_nesting == 0;
+ else
+ state = 0;
continue;
case xgettext_token_type_string_literal:
- if (extract_all || state == 2 || state == 6)
- {
- remember_a_message (mlp, &token);
- state = 0;
- }
+ if (extract_all || (state == 2 && commas_to_skip == 0))
+ remember_a_message (mlp, &token);
else
{
free (token.string);
- state = (state == 4 || state == 5) ? 5 : 0;
+ state = state == 2 ? 2 : 0;
}
continue;
case xgettext_token_type_symbol:
- state = (state == 4 || state == 5) ? 5 : 0;
+ state = state == 2 ? 2 : 0;
continue;
default:
- state = 0;
- continue;
+ abort ();
case xgettext_token_type_eof:
break;
===================================================================
RCS file: po/Makefile.in.in,v
retrieving revision 0.10.35.0
retrieving revision 0.10.35.5
diff -u -r0.10.35.0 -r0.10.35.5
--- po/Makefile.in.in 1998/07/20 20:20:38 0.10.35.0
+++ po/Makefile.in.in 1998/07/26 09:07:52 0.10.35.5
@@ -62,7 +62,7 @@
$(COMPILE) $<
.po.pox:
- $(MAKE) $(PACKAGE).pot
+ $(MAKE) $(srcdir)/$(PACKAGE).pot
$(MSGMERGE) $< $(srcdir)/$(PACKAGE).pot -o $*.pox
.po.mo:
@@ -79,7 +79,7 @@
all: all-@USE_NLS@
-all-yes: cat-id-tbl.c $(CATALOGS)
+all-yes: $(srcdir)/cat-id-tbl.c $(CATALOGS)
all-no:
$(srcdir)/$(PACKAGE).pot: $(POTFILES)
@@ -90,8 +90,8 @@
|| ( rm -f $(srcdir)/$(PACKAGE).pot \
&& mv $(PACKAGE).po $(srcdir)/$(PACKAGE).pot )
-$(srcdir)/cat-id-tbl.c: stamp-cat-id; @:
-$(srcdir)/stamp-cat-id: $(PACKAGE).pot
+$(srcdir)/cat-id-tbl.c: $(srcdir)/stamp-cat-id; @:
+$(srcdir)/stamp-cat-id: $(srcdir)/$(PACKAGE).pot
rm -f cat-id-tbl.tmp
sed -f ../intl/po2tbl.sed $(srcdir)/$(PACKAGE).pot \
| sed -e "s/@PACKAGE NAME@/$(PACKAGE)/" > cat-id-tbl.tmp
@@ -180,7 +180,8 @@
check: all
-cat-id-tbl.o: ../intl/libgettext.h
+cat-id-tbl.o: $(srcdir)/cat-id-tbl.c $(top_srcdir)/intl/libgettext.h
+ $(COMPILE) $(srcdir)/cat-id-tbl.c
dvi info tags TAGS ID:
@@ -196,7 +197,7 @@
maintainer-clean: distclean
@echo "This command is intended for maintainers to use;"
@echo "it deletes files that may require special tools to rebuild."
- rm -f $(GMOFILES)
+ rm -f $(GMOFILES) cat-id-tbl.c stamp-cat-id
distdir = ../$(PACKAGE)-$(VERSION)/$(subdir)
dist distdir: update-po $(DISTFILES)
@@ -207,7 +208,7 @@
done
update-po: Makefile
- $(MAKE) $(PACKAGE).pot
+ $(MAKE) $(srcdir)/$(PACKAGE).pot
PATH=`pwd`/../src:$$PATH; \
cd $(srcdir); \
catalogs='$(CATALOGS)'; \
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