Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 147 insertions, 0 deletions

diff --git a/src/basic/glyph-util.c b/src/basic/glyph-util.c
new file mode 100644
index 0000000..803bdd9
--- /dev/null
+++ b/src/basic/glyph-util.c
@@ -0,0 +1,147 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "env-util.h"
+#include "glyph-util.h"
+#include "locale-util.h"
+#include "strv.h"
+
+bool emoji_enabled(void) {
+        static int cached_emoji_enabled = -1;
+
+        if (cached_emoji_enabled < 0) {
+                int val = getenv_bool("SYSTEMD_EMOJI");
+                if (val >= 0)
+                        return (cached_emoji_enabled = val);
+
+                const char *term = getenv("TERM");
+                if (!term || STR_IN_SET(term, "dumb", "linux"))
+                        return (cached_emoji_enabled = false);
+
+                cached_emoji_enabled = is_locale_utf8();
+        }
+
+        return cached_emoji_enabled;
+}
+
+const char *special_glyph_full(SpecialGlyph code, bool force_utf) {
+
+        /* A list of a number of interesting unicode glyphs we can use to decorate our output. It's probably wise to be
+         * conservative here, and primarily stick to the glyphs defined in the eurlatgr font, so that display still
+         * works reasonably well on the Linux console. For details see:
+         *
+         * http://git.altlinux.org/people/legion/packages/kbd.git?p=kbd.git;a=blob;f=data/consolefonts/README.eurlatgr
+         */
+
+        static const char* const draw_table[2][_SPECIAL_GLYPH_MAX] = {
+                /* ASCII fallback */
+                [false] = {
+                        [SPECIAL_GLYPH_TREE_VERTICAL]           = "| ",
+                        [SPECIAL_GLYPH_TREE_BRANCH]             = "|-",
+                        [SPECIAL_GLYPH_TREE_RIGHT]              = "`-",
+                        [SPECIAL_GLYPH_TREE_SPACE]              = "  ",
+                        [SPECIAL_GLYPH_TREE_TOP]                = ",-",
+                        [SPECIAL_GLYPH_VERTICAL_DOTTED]         = ":",
+                        [SPECIAL_GLYPH_TRIANGULAR_BULLET]       = ">",
+                        [SPECIAL_GLYPH_BLACK_CIRCLE]            = "*",
+                        [SPECIAL_GLYPH_WHITE_CIRCLE]            = "*",
+                        [SPECIAL_GLYPH_MULTIPLICATION_SIGN]     = "x",
+                        [SPECIAL_GLYPH_CIRCLE_ARROW]            = "*",
+                        [SPECIAL_GLYPH_BULLET]                  = "*",
+                        [SPECIAL_GLYPH_MU]                      = "u",
+                        [SPECIAL_GLYPH_CHECK_MARK]              = "+",
+                        [SPECIAL_GLYPH_CROSS_MARK]              = "-",
+                        [SPECIAL_GLYPH_LIGHT_SHADE]             = "-",
+                        [SPECIAL_GLYPH_DARK_SHADE]              = "X",
+                        [SPECIAL_GLYPH_FULL_BLOCK]              = "#",
+                        [SPECIAL_GLYPH_SIGMA]                   = "S",
+                        [SPECIAL_GLYPH_ARROW_UP]                = "^",
+                        [SPECIAL_GLYPH_ARROW_DOWN]              = "v",
+                        [SPECIAL_GLYPH_ARROW_LEFT]              = "<-",
+                        [SPECIAL_GLYPH_ARROW_RIGHT]             = "->",
+                        [SPECIAL_GLYPH_ELLIPSIS]                = "...",
+                        [SPECIAL_GLYPH_EXTERNAL_LINK]           = "[LNK]",
+                        [SPECIAL_GLYPH_ECSTATIC_SMILEY]         = ":-]",
+                        [SPECIAL_GLYPH_HAPPY_SMILEY]            = ":-}",
+                        [SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY]   = ":-)",
+                        [SPECIAL_GLYPH_NEUTRAL_SMILEY]          = ":-|",
+                        [SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY] = ":-(",
+                        [SPECIAL_GLYPH_UNHAPPY_SMILEY]          = ":-{",
+                        [SPECIAL_GLYPH_DEPRESSED_SMILEY]        = ":-[",
+                        [SPECIAL_GLYPH_LOCK_AND_KEY]            = "o-,",
+                        [SPECIAL_GLYPH_TOUCH]                   = "O=",    /* Yeah, not very convincing, can you do it better? */
+                        [SPECIAL_GLYPH_RECYCLING]               = "~",
+                        [SPECIAL_GLYPH_DOWNLOAD]                = "\\",
+                        [SPECIAL_GLYPH_SPARKLES]                = "*",
+                        [SPECIAL_GLYPH_LOW_BATTERY]             = "!",
+                        [SPECIAL_GLYPH_WARNING_SIGN]            = "!",
+                },
+
+                /* UTF-8 */
+                [true] = {
+                        /* The following are multiple glyphs in both ASCII and in UNICODE */
+                        [SPECIAL_GLYPH_TREE_VERTICAL]           = u8"│ ",
+                        [SPECIAL_GLYPH_TREE_BRANCH]             = u8"├─",
+                        [SPECIAL_GLYPH_TREE_RIGHT]              = u8"└─",
+                        [SPECIAL_GLYPH_TREE_SPACE]              = u8"  ",
+                        [SPECIAL_GLYPH_TREE_TOP]                = u8"┌─",
+
+                        /* Single glyphs in both cases */
+                        [SPECIAL_GLYPH_VERTICAL_DOTTED]         = u8"┆",
+                        [SPECIAL_GLYPH_TRIANGULAR_BULLET]       = u8"‣",
+                        [SPECIAL_GLYPH_BLACK_CIRCLE]            = u8"●",
+                        [SPECIAL_GLYPH_WHITE_CIRCLE]            = u8"○",
+                        [SPECIAL_GLYPH_MULTIPLICATION_SIGN]     = u8"×",
+                        [SPECIAL_GLYPH_CIRCLE_ARROW]            = u8"↻",
+                        [SPECIAL_GLYPH_BULLET]                  = u8"•",
+                        [SPECIAL_GLYPH_MU]                      = u8"μ",       /* actually called: GREEK SMALL LETTER MU */
+                        [SPECIAL_GLYPH_CHECK_MARK]              = u8"✓",
+                        [SPECIAL_GLYPH_CROSS_MARK]              = u8"✗",        /* actually called: BALLOT X */
+                        [SPECIAL_GLYPH_LIGHT_SHADE]             = u8"░",
+                        [SPECIAL_GLYPH_DARK_SHADE]              = u8"▒",
+                        [SPECIAL_GLYPH_FULL_BLOCK]              = u8"█",
+                        [SPECIAL_GLYPH_SIGMA]                   = u8"Σ",
+                        [SPECIAL_GLYPH_ARROW_UP]                = u8"↑",       /* actually called: UPWARDS ARROW */
+                        [SPECIAL_GLYPH_ARROW_DOWN]              = u8"↓",       /* actually called: DOWNWARDS ARROW */
+
+                        /* Single glyph in Unicode, two in ASCII */
+                        [SPECIAL_GLYPH_ARROW_LEFT]              = u8"←",       /* actually called: LEFTWARDS ARROW */
+                        [SPECIAL_GLYPH_ARROW_RIGHT]             = u8"→",       /* actually called: RIGHTWARDS ARROW */
+
+                        /* Single glyph in Unicode, three in ASCII */
+                        [SPECIAL_GLYPH_ELLIPSIS]                = u8"…",       /* actually called: HORIZONTAL ELLIPSIS */
+
+                        /* Three glyphs in Unicode, five in ASCII */
+                        [SPECIAL_GLYPH_EXTERNAL_LINK]           = u8"[🡕]",      /* actually called: NORTH EAST SANS-SERIF ARROW, enclosed in [] */
+
+                        /* These smileys are a single glyph in Unicode, and three in ASCII */
+                        [SPECIAL_GLYPH_ECSTATIC_SMILEY]         = u8"😇",       /* actually called: SMILING FACE WITH HALO */
+                        [SPECIAL_GLYPH_HAPPY_SMILEY]            = u8"😀",       /* actually called: GRINNING FACE */
+                        [SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY]   = u8"🙂",       /* actually called: SLIGHTLY SMILING FACE */
+                        [SPECIAL_GLYPH_NEUTRAL_SMILEY]          = u8"😐",       /* actually called: NEUTRAL FACE */
+                        [SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY] = u8"🙁",       /* actually called: SLIGHTLY FROWNING FACE */
+                        [SPECIAL_GLYPH_UNHAPPY_SMILEY]          = u8"😨",       /* actually called: FEARFUL FACE */
+                        [SPECIAL_GLYPH_DEPRESSED_SMILEY]        = u8"🤢",       /* actually called: NAUSEATED FACE */
+
+                        /* This emoji is a single character cell glyph in Unicode, and three in ASCII */
+                        [SPECIAL_GLYPH_LOCK_AND_KEY]            = u8"🔐",       /* actually called: CLOSED LOCK WITH KEY */
+
+                        /* This emoji is a single character cell glyph in Unicode, and two in ASCII */
+                        [SPECIAL_GLYPH_TOUCH]                   = u8"👆",       /* actually called: BACKHAND INDEX POINTING UP */
+
+                        /* These four emojis are single character cell glyphs in Unicode and also in ASCII. */
+                        [SPECIAL_GLYPH_RECYCLING]               = u8"♻️",        /* actually called: UNIVERSAL RECYCLNG SYMBOL */
+                        [SPECIAL_GLYPH_DOWNLOAD]                = u8"⤵️",        /* actually called: RIGHT ARROW CURVING DOWN */
+                        [SPECIAL_GLYPH_SPARKLES]                = u8"✨",
+                        [SPECIAL_GLYPH_LOW_BATTERY]             = u8"🪫",
+                        [SPECIAL_GLYPH_WARNING_SIGN]            = u8"⚠️",
+                        [SPECIAL_GLYPH_COMPUTER_DISK]           = u8"💽",
+                        [SPECIAL_GLYPH_WORLD]                   = u8"🌍",
+                },
+        };
+
+        if (code < 0)
+                return NULL;
+
+        assert(code < _SPECIAL_GLYPH_MAX);
+        return draw_table[force_utf || (code >= _SPECIAL_GLYPH_FIRST_EMOJI ? emoji_enabled() : is_locale_utf8())][code];
+}