diff options
Diffstat (limited to 'libnm-core/nm-utils.c')
| -rw-r--r-- | libnm-core/nm-utils.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/libnm-core/nm-utils.c b/libnm-core/nm-utils.c index 617b0b4df8..7bc74557a7 100644 --- a/libnm-core/nm-utils.c +++ b/libnm-core/nm-utils.c @@ -2101,6 +2101,66 @@ nm_utils_wifi_is_channel_valid (guint32 channel, const char *band) } /** + * nm_utils_wifi_strength_bars: + * @strength: the access point strength, from 0 to 100 + * + * Converts @strength into a 4-character-wide graphical representation of + * strength suitable for printing to stdout. If the current locale and terminal + * support it, this will use unicode graphics characters to represent + * "bars". Otherwise it will use 0 to 4 asterisks. + * + * Returns: the graphical representation of the access point strength + */ +const char * +nm_utils_wifi_strength_bars (guint8 strength) +{ + static const char *strength_full, *strength_high, *strength_med, *strength_low, *strength_none; + + if (G_UNLIKELY (strength_full == NULL)) { + gboolean can_show_graphics = TRUE; + char *locale_str; + + if (!g_get_charset (NULL)) { + /* Non-UTF-8 locale */ + locale_str = g_locale_from_utf8 ("\342\226\202\342\226\204\342\226\206\342\226\210", -1, NULL, NULL, NULL); + if (locale_str) + g_free (locale_str); + else + can_show_graphics = FALSE; + } + + /* The linux console font doesn't have these characters */ + if (g_strcmp0 (g_getenv ("TERM"), "linux") == 0) + can_show_graphics = FALSE; + + if (can_show_graphics) { + strength_full = /* ▂▄▆█ */ "\342\226\202\342\226\204\342\226\206\342\226\210"; + strength_high = /* ▂▄▆_ */ "\342\226\202\342\226\204\342\226\206_"; + strength_med = /* ▂▄__ */ "\342\226\202\342\226\204__"; + strength_low = /* ▂___ */ "\342\226\202___"; + strength_none = /* ____ */ "____"; + } else { + strength_full = "****"; + strength_high = "*** "; + strength_med = "** "; + strength_low = "* "; + strength_none = " "; + } + } + + if (strength > 80) + return strength_full; + else if (strength > 55) + return strength_high; + else if (strength > 30) + return strength_med; + else if (strength > 5) + return strength_low; + else + return strength_none; +} + +/** * nm_utils_hwaddr_len: * @type: the type of address; either %ARPHRD_ETHER or %ARPHRD_INFINIBAND * |