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Diffstat (limited to 'src/basic/glyph-util.c')
| -rw-r--r-- | src/basic/glyph-util.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/basic/glyph-util.c b/src/basic/glyph-util.c new file mode 100644 index 0000000000..8810738fc3 --- /dev/null +++ b/src/basic/glyph-util.c @@ -0,0 +1,129 @@ +/* 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; + + val = getenv_bool("SYSTEMD_EMOJI"); + if (val < 0) + cached_emoji_enabled = + is_locale_utf8() && + !STRPTR_IN_SET(getenv("TERM"), "dumb", "linux"); + else + cached_emoji_enabled = val; + } + + return cached_emoji_enabled; +} + +const char *special_glyph(SpecialGlyph code) { + + /* 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_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_SIGMA] = "S", + [SPECIAL_GLYPH_ARROW] = "->", + [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] = "*", + }, + + /* UTF-8 */ + [true] = { + /* The following are multiple glyphs in both ASCII and in UNICODE */ + [SPECIAL_GLYPH_TREE_VERTICAL] = "\342\224\202 ", /* │ */ + [SPECIAL_GLYPH_TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */ + [SPECIAL_GLYPH_TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */ + [SPECIAL_GLYPH_TREE_SPACE] = " ", /* */ + + /* Single glyphs in both cases */ + [SPECIAL_GLYPH_TRIANGULAR_BULLET] = "\342\200\243", /* ‣ */ + [SPECIAL_GLYPH_BLACK_CIRCLE] = "\342\227\217", /* ● */ + [SPECIAL_GLYPH_WHITE_CIRCLE] = "\u25CB", /* ○ */ + [SPECIAL_GLYPH_MULTIPLICATION_SIGN] = "\u00D7", /* × */ + [SPECIAL_GLYPH_CIRCLE_ARROW] = "\u21BB", /* ↻ */ + [SPECIAL_GLYPH_BULLET] = "\342\200\242", /* • */ + [SPECIAL_GLYPH_MU] = "\316\274", /* μ (actually called: GREEK SMALL LETTER MU) */ + [SPECIAL_GLYPH_CHECK_MARK] = "\342\234\223", /* ✓ */ + [SPECIAL_GLYPH_CROSS_MARK] = "\342\234\227", /* ✗ (actually called: BALLOT X) */ + [SPECIAL_GLYPH_LIGHT_SHADE] = "\342\226\221", /* ░ */ + [SPECIAL_GLYPH_DARK_SHADE] = "\342\226\223", /* ▒ */ + [SPECIAL_GLYPH_SIGMA] = "\316\243", /* Σ */ + + /* Single glyph in Unicode, two in ASCII */ + [SPECIAL_GLYPH_ARROW] = "\342\206\222", /* → (actually called: RIGHTWARDS ARROW) */ + + /* Single glyph in Unicode, three in ASCII */ + [SPECIAL_GLYPH_ELLIPSIS] = "\342\200\246", /* … (actually called: HORIZONTAL ELLIPSIS) */ + + /* Three glyphs in Unicode, five in ASCII */ + [SPECIAL_GLYPH_EXTERNAL_LINK] = "[\360\237\241\225]", /* 🡕 (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] = "\360\237\230\207", /* 😇 (actually called: SMILING FACE WITH HALO) */ + [SPECIAL_GLYPH_HAPPY_SMILEY] = "\360\237\230\200", /* 😀 (actually called: GRINNING FACE) */ + [SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY] = "\360\237\231\202", /* 🙂 (actually called: SLIGHTLY SMILING FACE) */ + [SPECIAL_GLYPH_NEUTRAL_SMILEY] = "\360\237\230\220", /* 😐 (actually called: NEUTRAL FACE) */ + [SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY] = "\360\237\231\201", /* 🙁 (actually called: SLIGHTLY FROWNING FACE) */ + [SPECIAL_GLYPH_UNHAPPY_SMILEY] = "\360\237\230\250", /* 😨 (actually called: FEARFUL FACE) */ + [SPECIAL_GLYPH_DEPRESSED_SMILEY] = "\360\237\244\242", /* 🤢 (actually called: NAUSEATED FACE) */ + + /* This emoji is a single character cell glyph in Unicode, and three in ASCII */ + [SPECIAL_GLYPH_LOCK_AND_KEY] = "\360\237\224\220", /* 🔐 (actually called: CLOSED LOCK WITH KEY) */ + + /* This emoji is a single character cell glyph in Unicode, and two in ASCII */ + [SPECIAL_GLYPH_TOUCH] = "\360\237\221\206", /* 👆 (actually called: BACKHAND INDEX POINTING UP) */ + + /* These three emojis are single character cell glyphs in Unicode and also in ASCII. */ + [SPECIAL_GLYPH_RECYCLING] = "\u267B\uFE0F ", /* ♻️ (actually called: UNIVERSAL RECYCLNG SYMBOL) */ + [SPECIAL_GLYPH_DOWNLOAD] = "\u2935\uFE0F ", /* ⤵️ (actually called: RIGHT ARROW CURVING DOWN) */ + [SPECIAL_GLYPH_SPARKLES] = "\u2728", /* ✨ */ + }, + }; + + if (code < 0) + return NULL; + + assert(code < _SPECIAL_GLYPH_MAX); + return draw_table[code >= _SPECIAL_GLYPH_FIRST_EMOJI ? emoji_enabled() : is_locale_utf8()][code]; +} |