61 lines
2.6 KiB
Bash
Executable File
61 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Rebuilds iris/core/assets/fonts/nerd_icons.ttf.
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#
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# iris draws its icons as glyphs in a Nerd Fonts subset it ships, rather
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# than as ordinary Unicode out of whatever the platform resolved. Unicode's
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# own geometric shapes are what this replaced: `tool.rs` set its disclosure
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# mark with U+25B8/25BE/25B4, and once iris stopped bundling fonts
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# (2026-09-07) Iris's phone drew an empty box for them and this VM drew a
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# dot. UI_RULES: "don't rely on characters the platform might not have --
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# ship the glyph or the asset rather than hoping."
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#
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# The whole symbols font is 3 MB for the handful below, so what is
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# committed is a subset. Add a codepoint to GLYPHS *and* to
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# `iris/core/src/icon.rs` (the two lists have to agree -- a codepoint in
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# the Rust that this script did not subset is a glyph that silently isn't
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# there), then run this and commit the result.
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#
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# Needs python3 and network access; fontTools is fetched into a temporary
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# venv, so nothing has to be installed on the machine.
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#
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# The same arrangement as the Compose app's `app/build-icon-font.sh`, which
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# this is copied from -- including the Mono face and the Material Design
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# family, so an icon means the same thing in both apps. Copied rather than
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# shared because most of it is the GLYPHS list, which has to differ: the
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# point of subsetting is to ship only the codepoints one app draws.
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set -euo pipefail
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GLYPHS=(
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U+F035D # md-menu_down -- a card that is open
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U+F035F # md-menu_right -- a card that opens
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U+F0360 # md-menu_up -- collapse this group again
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)
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url=https://github.com/ryanoasis/nerd-fonts/releases/latest/download/NerdFontsSymbolsOnly.zip
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here="$(cd "$(dirname "$0")" && pwd)"
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out="$here/assets/fonts/nerd_icons.ttf"
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work="$(mktemp -d)"
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trap 'rm -rf "$work"' EXIT
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echo "Fetching $url"
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curl -fsSL -o "$work/nf.zip" "$url"
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python3 -c 'import sys,zipfile; zipfile.ZipFile(sys.argv[1]).extractall(sys.argv[2])' "$work/nf.zip" "$work"
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python3 -m venv "$work/venv"
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"$work/venv/bin/pip" -q install fonttools
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unicodes="$(IFS=,; echo "${GLYPHS[*]}")"
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mkdir -p "$(dirname "$out")"
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# The Mono face, where every glyph is one em wide and one em tall, so two
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# icons at the same font size are the same size without either being given
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# one -- the same reason the Compose app's script takes it. It is also what
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# makes an icon's box predictable beside a line of text.
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"$work/venv/bin/pyftsubset" "$work/SymbolsNerdFontMono-Regular.ttf" \
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--unicodes="$unicodes" \
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--layout-features= \
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--drop-tables+=DSIG \
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--output-file="$out"
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cp "$work/LICENSE" "$here/assets/fonts/NERD_FONTS_LICENSE.txt"
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echo "Wrote $out ($(stat -c %s "$out") bytes) with ${#GLYPHS[@]} glyphs"
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