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Monorepo for Aesthetic.Computer aesthetic.computer
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Python
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173#!/usr/bin/env python3# bdf-unicode-to-c.py — Extract selected Unicode codepoints from a BDF file# into a sorted C header. The table is sorted by codepoint so lookups use# binary search at runtime.## Usage: ./bdf-unicode-to-c.py input.bdf output.h## Covers the set of non-ASCII chars aesthetic.computer's web UI actually# uses (arrows, em-dashes, Greek, common symbols, box drawing). Stays# well under 1000 glyphs so binary bloat is bounded.
import gzipimport osimport sys
def ranges(): return [ (0x0020, 0x007E), # ASCII (full unifont parity for FONT_UNIFONT — nom word cells) (0x00A0, 0x00FF), # Latin-1 Supplement (accented chars, typographic) (0x0100, 0x017F), # Latin Extended-A (0x0250, 0x02AF), # IPA Extensions (laer-klokken chat: ɑ ɓ ɨ ɱ ʊ …) (0x0391, 0x03CE), # Greek (alpha..omega) (0x0400, 0x04FF), # Cyrillic (rusnom boards + labels) (0x2010, 0x2027), # General Punctuation (em-dash, ellipsis, quotes) (0x2030, 0x2044), # Per mille, primes, fractions (0x20D0, 0x20FF), # Combining Diacritical Marks for Symbols (♫⃠) (0x2190, 0x21FF), # Arrows (0x2200, 0x22FF), # Math operators (0x2500, 0x257F), # Box Drawing (0x2580, 0x259F), # Block Elements (0x25A0, 0x25FF), # Geometric Shapes (0x2600, 0x26FF), # Misc Symbols (star, heart, note, sun, etc) (0x2700, 0x27BF), # Dingbats (checkmark, cross, ballot) ]
def want(cp): for lo, hi in ranges(): if lo <= cp <= hi: return True return False
def open_bdf(path): if path.endswith(".gz"): return gzip.open(path, "rt", encoding="latin-1") return open(path, "r", encoding="latin-1")
def parse(path): glyphs = {} font_ascent = 8 with open_bdf(path) as f: enc = -1 dwidth = 0 bbx = (0, 0, 0, 0) rows = [] in_bitmap = False for line in f: s = line.strip() if s.startswith("FONT_ASCENT "): try: font_ascent = int(s.split()[1]) except Exception: pass elif s.startswith("STARTCHAR"): enc = -1 dwidth = 0 bbx = (0, 0, 0, 0) rows = [] in_bitmap = False elif s.startswith("ENCODING "): try: enc = int(s.split()[1]) except Exception: enc = -1 elif s.startswith("DWIDTH "): parts = s.split() try: dwidth = int(parts[1]) except Exception: dwidth = 0 elif s.startswith("BBX "): parts = s.split() try: bbx = (int(parts[1]), int(parts[2]), int(parts[3]), int(parts[4])) except Exception: bbx = (0, 0, 0, 0) elif s == "BITMAP": in_bitmap = True rows = [] elif s == "ENDCHAR": if enc != -1 and want(enc): # Pack rows into bytes. Unifont glyphs can be up to 16 wide, # stored as 2 bytes per row. We simplify to max width 16. w, h, xoff, yoff = bbx if w > 0 and h > 0 and w <= 16 and h <= 16 and len(rows) == h: row_bytes = [] bytes_per_row = (w + 7) // 8 for r in rows: try: hb = int(r, 16) except ValueError: hb = 0 # Normalise to 2 bytes (MSB-padded) if bytes_per_row == 1: row_bytes.append((hb & 0xFF) << 8) else: row_bytes.append(hb & 0xFFFF) glyphs[enc] = (w, h, xoff, yoff, dwidth, row_bytes) enc = -1 in_bitmap = False elif in_bitmap and s: rows.append(s) return font_ascent, glyphs
def emit(ascent, glyphs, out_path): out = [] out.append("// Auto-generated Unicode glyph subset from unifont — do not edit") out.append("// Produced by bdf-unicode-to-c.py") out.append("") out.append("#ifndef AC_FONT_UNICODE_H") out.append("#define AC_FONT_UNICODE_H") out.append("") out.append("#include <stdint.h>") out.append("") out.append("typedef struct {") out.append(" uint32_t codepoint;") out.append(" uint8_t width; // BBX width") out.append(" uint8_t height; // BBX height") out.append(" int8_t xoff;") out.append(" int8_t yoff;") out.append(" uint8_t dwidth;") out.append(" uint16_t rows[16]; // up to 16 rows, MSB-padded") out.append("} UnicodeGlyph;") out.append("") out.append(f"static const int unicode_ascent = {ascent};") out.append(f"static const int unicode_glyph_count = {len(glyphs)};") out.append("") out.append("static const UnicodeGlyph unicode_glyphs[] = {") for cp in sorted(glyphs.keys()): w, h, xoff, yoff, dw, rs = glyphs[cp] rows_str = ", ".join("0x%04X" % r for r in rs) # Pad rows to 16 entries pad = 16 - len(rs) if pad > 0: rows_str += ", " + ", ".join(["0"] * pad) out.append( f" {{0x{cp:04X}, {w}, {h}, {xoff}, {yoff}, {dw}, {{{rows_str}}}}}," ) out.append("};") out.append("") out.append("#endif") out.append("") with open(out_path, "w") as f: f.write("\n".join(out))
def main(): if len(sys.argv) < 3: print(f"usage: {sys.argv[0]} input.bdf output.h", file=sys.stderr) return 2 ascent, glyphs = parse(sys.argv[1]) emit(ascent, glyphs, sys.argv[2]) print(f"[bdf-unicode] extracted {len(glyphs)} glyphs → {sys.argv[2]}", file=sys.stderr) return 0
if __name__ == "__main__": sys.exit(main())