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-rw-r--r--src/basic/glyph-util.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/basic/glyph-util.c b/src/basic/glyph-util.c
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--- /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];
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 01:11:45 +0000