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Added a function to check if specific OS features are available

Browse source 
linux.c, macos.c, windows.c now contain
subsurface_os_feature_available() that can accept an enum type
os_feature_t defined in dive.h.

The function can be useful to check if a specific global feature
is available on a certain OS version.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Lubomir I. Ivanov 2012-10-20 02:31:06 +03:00 • committed by Dirk Hohndel
parent a75b04473f
commit 5b3e480be3
4 changed files with 31 additions and 0 deletions
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6
dive.h
View file

@ -437,10 +437,16 @@ const char *monthname(int mon);
#define FIVE_STARS UTF8_BLACKSTAR UTF8_BLACKSTAR UTF8_BLACKSTAR UTF8_BLACKSTAR UTF8_BLACKSTAR
extern const char *star_strings[];
/* enum holding list of OS features */
typedef enum {
UTF8_FONT_WITH_STARS
} os_feature_t;
extern const char *default_filename;
extern const char *existing_filename;
extern const char *subsurface_default_filename(void);
extern const char *subsurface_gettext_domainpath(char *);
extern gboolean subsurface_os_feature_available(os_feature_t);
extern void subsurface_command_line_init(gint *, gchar ***);
extern void subsurface_command_line_exit(gint *, gchar ***);
#define AIR_PERMILLE 209

5
linux.c
View file

@ -112,3 +112,8 @@ void subsurface_command_line_exit(gint *argc, gchar ***argv)
{
/* this is a no-op */
}
gboolean subsurface_os_feature_available(os_feature_t f)
{
return TRUE;
}

5
macos.c
View file

@ -172,3 +172,8 @@ void subsurface_command_line_exit(gint *argc, gchar ***argv)
{
/* this is a no-op */
}
gboolean subsurface_os_feature_available(os_feature_t f)
{
return TRUE;
}

15
windows.c
View file

@ -223,3 +223,18 @@ void subsurface_command_line_exit(gint *argc, gchar ***argv)
g_free((*argv)[i]);
g_free(*argv);
}
/* check if we are running a newer OS version */
gboolean subsurface_os_feature_available(os_feature_t f)
{
switch (f) {
case UTF8_FONT_WITH_STARS:
if ((GetVersion() & 0xff) < 6)
return FALSE; /* version less than Vista */
else
return TRUE;
break;
default:
return TRUE;
}
}