Conversion to gettext to allow localization

This is just the first step - convert the string literals, try to catch
all the places where this isn't possible and the program needs to convert
string constants at runtime (those are the N_ macros).

Add a very rough first German localization so I can at least test what I
have done. Seriously, I have never used a localized OS, so I am certain
that I have many of the 'standard' translations wrong. Someone please take
over :-)

Major issues with this:

- right now it hardcodes the search path for the message catalog to be
  ./locale - that's of course bogus, but it works well while doing initial
  testing. Once the tooling support is there we just should use the OS
  default.

- even though de_DE defaults to ISO-8859-15 (or ISO-8859-1 - the internets
  can't seem to agree) I went with UTF-8 as that is what Gtk appears to
  want to use internally. ISO-8859-15 encoded .mo files create funny
  looking artefacts instead of Umlaute.

- no support at all in the Makefile - I was hoping someone with more
  experience in how to best set this up would contribute a good set of
  Makefile rules - likely this will help fix the first issue in that it
  will also install the .mo file(s) in the correct place(s)

  For now simply run

  msgfmt -c -o subsurface.mo deutsch.po

  to create the subsurface.mo file and then move it to
  ./locale/de_DE.UTF-8/LC_MESSAGES/subsurface.mo

  If you make changes to the sources and need to add new strings to be
  translated, this is what seems to work (again, should be tooled through
  the Makefile):

  xgettext -o subsurface-new.pot -s -k_ -kN_ --add-comments="++GETTEXT" *.c
  msgmerge -s -U po/deutsch.po subsurface-new.pot

  If you do this PLEASE do one commit that just has the new msgid as
  changes in line numbers create a TON of diff-noise. Do changes to
  translations in a SEPARATE commit.

- no testing at all on Windows or Mac
  It builds on Windows :-)

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 19 insertions, 18 deletions

diff --git a/uemis.c b/uemis.c
index 557c419f3..1ac458458 100644
--- a/uemis.c
+++ b/uemis.c
@@ -12,6 +12,7 @@
 #include <string.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <glib/gi18n.h>
 #define __USE_XOPEN
 #include <time.h>
 
@@ -128,45 +129,45 @@ void uemis_event(struct dive *dive, struct sample *sample, uemis_sample_t *u_sam
 	uint8_t *flags = u_sample->flags;
 
 	if (flags[1] & 0x01)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Safety Stop Violation");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Safety Stop Violation"));
 	if (flags[1] & 0x08)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Speed Alarm");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Speed Alarm"));
 #if WANT_CRAZY_WARNINGS
 	if (flags[1] & 0x06) /* both bits 1 and 2 are a warning */
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Speed Warning");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Speed Warning"));
 	if (flags[1] & 0x10)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "PO2 Green Warning");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("PO2 Green Warning"));
 #endif
 	if (flags[1] & 0x20)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "PO2 Ascend Warning");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("PO2 Ascend Warning"));
 	if (flags[1] & 0x40)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "PO2 Ascend Alarm");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("PO2 Ascend Alarm"));
 	/* flags[2] reflects the deco / time bar
 	 * flags[3] reflects more display details on deco and pO2 */
 	if (flags[4] & 0x01)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Tank Pressure Info");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Tank Pressure Info"));
 	if (flags[4] & 0x04)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "RGT Warning");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("RGT Warning"));
 	if (flags[4] & 0x08)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "RGT Alert");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("RGT Alert"));
 	if (flags[4] & 0x40)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Tank Change Suggested");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Tank Change Suggested"));
 	if (flags[4] & 0x80)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Depth Limit Exceeded");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Depth Limit Exceeded"));
 	if (flags[5] & 0x01)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Max Deco Time Warning");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Max Deco Time Warning"));
 	if (flags[5] & 0x04)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Dive Time Info");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Dive Time Info"));
 	if (flags[5] & 0x08)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Dive Time Alert");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Dive Time Alert"));
 	if (flags[5] & 0x10)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Marker");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Marker"));
 	if (flags[6] & 0x02)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "No Tank Data");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("No Tank Data"));
 	if (flags[6] & 0x04)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Low Battery Warning");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Low Battery Warning"));
 	if (flags[6] & 0x08)
-		add_event(dive, sample->time.seconds, 0, 0, 0, "Low Battery Alert");
+		add_event(dive, sample->time.seconds, 0, 0, 0, _("Low Battery Alert"));
 	/* flags[7] reflects the little on screen icons that remind of previous
 	 * warnings / alerts - not useful for events */
 }