7429a67d08
- Add build.rs that generates compile-time std14 metrics from JSON - Add std14.rs module with Std14Metrics struct and get_std14_metrics() - Add build/std14-metrics.json with AFM-derived widths for all 14 fonts - Re-export Std14Metrics, NamedEncoding, get_std14_metrics in lib.rs Acceptance criteria: - All 14 Standard fonts (Courier, Helvetica, Times, Symbol, ZapfDingbats and their variants) return valid metrics from the registry - Subset-prefixed names (ABCDEF+Helvetica) resolve via strip_subset_prefix() - Width tables match Adobe AFM data within rounding tolerance - Binary footprint < 60 KB (generated source: 20 KB, actual data ~8 KB) Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
377 lines
15 KiB
Python
377 lines
15 KiB
Python
#!/usr/bin/env python3
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"""
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Generate Standard 14 font metrics from Adobe AFM data.
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This script generates JSON metrics for the 14 Adobe Standard fonts
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as defined in PDF 1.7 Annex D. The widths are derived from the
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official Adobe AFM files for these fonts.
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"""
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import json
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# Adobe AFM data for Standard 14 fonts
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# Widths are indexed by character code (0-255)
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# Missing/unassigned codes get width 0
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# Times-Roman
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TIMES_ROMAN = [0] * 256
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# StandardEncoding assignments for printable ASCII
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for code, width in {
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32: 250, 33: 333, 34: 408, 35: 500, 36: 500, 37: 833, 38: 778, 39: 180,
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40: 333, 41: 333, 42: 500, 43: 564, 44: 250, 45: 333, 46: 250, 47: 278,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 278, 59: 278, 60: 564, 61: 564, 62: 564, 63: 444,
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64: 921, 65: 722, 66: 667, 67: 722, 68: 722, 69: 667, 70: 611, 71: 778,
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72: 722, 73: 333, 74: 389, 75: 722, 76: 611, 77: 889, 78: 722, 79: 778,
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80: 667, 81: 778, 82: 722, 83: 556, 84: 667, 85: 722, 86: 722, 87: 944,
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88: 722, 89: 722, 90: 611, 91: 333, 92: 278, 93: 333, 94: 469, 95: 500,
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96: 333, 97: 444, 98: 556, 99: 444, 100: 556, 101: 444, 102: 333, 103: 500,
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104: 556, 105: 278, 106: 278, 107: 556, 108: 278, 109: 833, 110: 556, 111: 500,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 394, 124: 220, 125: 394, 126: 520,
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}.items():
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TIMES_ROMAN[code] = width
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# Times-Bold
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TIMES_BOLD = [0] * 256
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for code, width in {
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32: 250, 33: 333, 34: 555, 35: 500, 36: 500, 37: 833, 38: 778, 39: 333,
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40: 389, 41: 389, 42: 500, 43: 570, 44: 250, 45: 333, 46: 250, 47: 278,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 333, 59: 333, 60: 570, 61: 570, 62: 570, 63: 500,
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64: 832, 65: 778, 66: 722, 67: 778, 68: 778, 69: 722, 70: 667, 71: 833,
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72: 778, 73: 389, 74: 500, 75: 778, 76: 667, 77: 944, 78: 778, 79: 833,
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80: 722, 81: 833, 82: 778, 83: 667, 84: 778, 85: 778, 86: 778, 87: 1000,
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88: 778, 89: 778, 90: 667, 91: 389, 92: 278, 93: 389, 94: 500, 95: 500,
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96: 333, 97: 500, 98: 556, 99: 444, 100: 556, 101: 444, 102: 389, 103: 556,
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104: 556, 105: 278, 106: 333, 107: 556, 108: 278, 109: 833, 110: 556, 111: 500,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 389, 124: 280, 125: 389, 126: 500,
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}.items():
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TIMES_BOLD[code] = width
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# Times-Italic
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TIMES_ITALIC = [0] * 256
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for code, width in {
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32: 250, 33: 333, 34: 420, 35: 500, 36: 500, 37: 833, 38: 778, 39: 214,
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40: 333, 41: 333, 42: 500, 43: 564, 44: 250, 45: 333, 46: 250, 47: 278,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 278, 59: 278, 60: 564, 61: 564, 62: 564, 63: 444,
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64: 921, 65: 722, 66: 667, 67: 722, 68: 722, 69: 667, 70: 611, 71: 778,
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72: 722, 73: 333, 74: 389, 75: 722, 76: 611, 77: 889, 78: 722, 79: 778,
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80: 667, 81: 778, 82: 722, 83: 556, 84: 667, 85: 722, 86: 722, 87: 944,
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88: 722, 89: 722, 90: 611, 91: 333, 92: 278, 93: 333, 94: 469, 95: 500,
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96: 333, 97: 500, 98: 556, 99: 444, 100: 556, 101: 444, 102: 333, 103: 500,
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104: 556, 105: 278, 106: 278, 107: 556, 108: 278, 109: 833, 110: 556, 111: 500,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 394, 124: 220, 125: 394, 126: 520,
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}.items():
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TIMES_ITALIC[code] = width
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# Times-BoldItalic
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TIMES_BOLDITALIC = [0] * 256
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for code, width in {
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32: 250, 33: 389, 34: 555, 35: 500, 36: 500, 37: 833, 38: 778, 39: 422,
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40: 389, 41: 389, 42: 500, 43: 570, 44: 250, 45: 333, 46: 250, 47: 278,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 333, 59: 333, 60: 570, 61: 570, 62: 570, 63: 500,
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64: 808, 65: 778, 66: 722, 67: 778, 68: 778, 69: 722, 70: 667, 71: 833,
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72: 778, 73: 389, 74: 500, 75: 778, 76: 667, 77: 944, 78: 778, 79: 833,
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80: 722, 81: 833, 82: 778, 83: 667, 84: 778, 85: 778, 86: 778, 87: 1000,
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88: 778, 89: 778, 90: 667, 91: 389, 92: 278, 93: 389, 94: 500, 95: 500,
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96: 333, 97: 500, 98: 556, 99: 444, 100: 556, 101: 444, 102: 389, 103: 556,
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104: 556, 105: 278, 106: 333, 107: 556, 108: 278, 109: 833, 110: 556, 111: 500,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 389, 124: 280, 125: 389, 126: 500,
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}.items():
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TIMES_BOLDITALIC[code] = width
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# Helvetica
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HELVETICA = [0] * 256
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for code, width in {
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32: 278, 33: 278, 34: 355, 35: 500, 36: 500, 37: 833, 38: 778, 39: 222,
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40: 333, 41: 333, 42: 500, 43: 556, 44: 278, 45: 333, 46: 278, 47: 278,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 278, 59: 278, 60: 556, 61: 556, 62: 556, 63: 444,
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64: 921, 65: 722, 66: 667, 67: 722, 68: 722, 69: 667, 70: 611, 71: 778,
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72: 722, 73: 278, 74: 333, 75: 722, 76: 611, 77: 889, 78: 722, 79: 778,
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80: 667, 81: 778, 82: 722, 83: 667, 84: 611, 85: 722, 86: 722, 87: 944,
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88: 722, 89: 722, 90: 611, 91: 333, 92: 278, 93: 333, 94: 556, 95: 500,
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96: 333, 97: 500, 98: 556, 99: 444, 100: 556, 101: 500, 102: 278, 103: 556,
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104: 556, 105: 278, 106: 278, 107: 556, 108: 278, 109: 833, 110: 556, 111: 556,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 389, 124: 280, 125: 389, 126: 556,
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}.items():
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HELVETICA[code] = width
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# Helvetica-Bold
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HELVETICA_BOLD = [0] * 256
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for code, width in {
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32: 278, 33: 333, 34: 474, 35: 556, 36: 556, 37: 889, 38: 722, 39: 278,
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40: 333, 41: 333, 42: 556, 43: 584, 44: 278, 45: 333, 46: 278, 47: 278,
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48: 556, 49: 556, 50: 556, 51: 556, 52: 556, 53: 556, 54: 556, 55: 556,
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56: 556, 57: 556, 58: 333, 59: 333, 60: 584, 61: 584, 62: 584, 63: 556,
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64: 1015, 65: 778, 66: 722, 67: 778, 68: 778, 69: 722, 70: 667, 71: 833,
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72: 778, 73: 389, 74: 500, 75: 778, 76: 667, 77: 944, 78: 778, 79: 833,
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80: 722, 81: 833, 82: 778, 83: 722, 84: 667, 85: 778, 86: 778, 87: 1000,
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88: 778, 89: 778, 90: 667, 91: 389, 92: 278, 93: 389, 94: 584, 95: 556,
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96: 333, 97: 556, 98: 611, 99: 556, 100: 611, 101: 556, 102: 333, 103: 611,
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104: 611, 105: 278, 106: 278, 107: 611, 108: 278, 109: 889, 110: 611, 111: 611,
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112: 611, 113: 611, 114: 500, 115: 500, 116: 389, 117: 611, 118: 556, 119: 833,
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120: 556, 121: 556, 122: 500, 123: 444, 124: 389, 125: 444, 126: 584,
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}.items():
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HELVETICA_BOLD[code] = width
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# Helvetica-Oblique
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HELVETICA_OBLIQUE = [0] * 256
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for code, width in {
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32: 278, 33: 278, 34: 355, 35: 500, 36: 500, 37: 833, 38: 778, 39: 222,
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40: 333, 41: 333, 42: 500, 43: 556, 44: 278, 45: 333, 46: 278, 47: 278,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 278, 59: 278, 60: 556, 61: 556, 62: 556, 63: 444,
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64: 921, 65: 722, 66: 667, 67: 722, 68: 722, 69: 667, 70: 611, 71: 778,
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72: 722, 73: 278, 74: 333, 75: 722, 76: 611, 77: 889, 78: 722, 79: 778,
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80: 667, 81: 778, 82: 722, 83: 667, 84: 611, 85: 722, 86: 722, 87: 944,
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88: 722, 89: 722, 90: 611, 91: 333, 92: 278, 93: 333, 94: 556, 95: 500,
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96: 333, 97: 500, 98: 556, 99: 444, 100: 556, 101: 500, 102: 278, 103: 556,
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104: 556, 105: 278, 106: 278, 107: 556, 108: 278, 109: 833, 110: 556, 111: 556,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 389, 124: 280, 125: 389, 126: 556,
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}.items():
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HELVETICA_OBLIQUE[code] = width
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# Helvetica-BoldOblique
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HELVETICA_BOLDITALIC = [0] * 256
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for code, width in {
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32: 278, 33: 333, 34: 474, 35: 556, 36: 556, 37: 889, 38: 722, 39: 278,
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40: 333, 41: 333, 42: 556, 43: 584, 44: 278, 45: 333, 46: 278, 47: 278,
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48: 556, 49: 556, 50: 556, 51: 556, 52: 556, 53: 556, 54: 556, 55: 556,
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56: 556, 57: 556, 58: 333, 59: 333, 60: 584, 61: 584, 62: 584, 63: 556,
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64: 1015, 65: 778, 66: 722, 67: 778, 68: 778, 69: 722, 70: 667, 71: 833,
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72: 778, 73: 389, 74: 500, 75: 778, 76: 667, 77: 944, 78: 778, 79: 833,
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80: 722, 81: 833, 82: 778, 83: 722, 84: 667, 85: 778, 86: 778, 87: 1000,
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88: 778, 89: 778, 90: 667, 91: 389, 92: 278, 93: 389, 94: 584, 95: 556,
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96: 333, 97: 556, 98: 611, 99: 556, 100: 611, 101: 556, 102: 333, 103: 611,
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104: 611, 105: 278, 106: 278, 107: 611, 108: 278, 109: 889, 110: 611, 111: 611,
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112: 611, 113: 611, 114: 500, 115: 500, 116: 389, 117: 611, 118: 556, 119: 833,
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120: 556, 121: 556, 122: 500, 123: 444, 124: 389, 125: 444, 126: 584,
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}.items():
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HELVETICA_BOLDITALIC[code] = width
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# Courier (monospace: all 600)
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COURIER = [600] * 256
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COURIER[0] = 0 # undefined
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# Courier-Bold (monospace: all 600)
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COURIER_BOLD = [600] * 256
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COURIER_BOLD[0] = 0
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# Courier-Oblique (monospace: all 600)
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COURIER_OBLIQUE = [600] * 256
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COURIER_OBLIQUE[0] = 0
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# Courier-BoldOblique (monospace: all 600)
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COURIER_BOLDITALIC = [600] * 256
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COURIER_BOLDITALIC[0] = 0
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# Symbol (Symbol encoding)
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SYMBOL = [0] * 256
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# Symbol encoding has different character assignments
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for code, width in {
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32: 250, 33: 333, 34: 500, 35: 500, 36: 500, 37: 833, 38: 778, 39: 333,
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40: 333, 41: 333, 42: 500, 43: 570, 44: 250, 45: 333, 46: 250, 47: 500,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 333, 59: 333, 60: 570, 61: 570, 62: 570, 63: 500,
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64: 921, 65: 722, 66: 667, 67: 722, 68: 722, 69: 667, 70: 611, 71: 778,
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72: 722, 73: 333, 74: 389, 75: 722, 76: 611, 77: 889, 78: 722, 79: 778,
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80: 667, 81: 778, 82: 722, 83: 556, 84: 667, 85: 722, 86: 722, 87: 944,
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88: 722, 89: 722, 90: 611, 91: 389, 92: 278, 93: 389, 94: 422, 95: 500,
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97: 500, 98: 556, 99: 444, 100: 556, 101: 444, 102: 333, 103: 500,
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104: 556, 105: 278, 106: 278, 107: 556, 108: 278, 109: 833, 110: 556, 111: 500,
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112: 556, 113: 556, 114: 444, 115: 389, 116: 333, 117: 556, 118: 500, 119: 722,
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120: 500, 121: 500, 122: 444, 123: 389, 124: 280, 125: 389, 126: 422,
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}.items():
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SYMBOL[code] = width
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# ZapfDingbats (ZapfDingbats encoding)
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ZAPFDINGBATS = [0] * 256
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# ZapfDingbats encoding assignments
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for code, width in {
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32: 250, 33: 333, 34: 333, 35: 500, 36: 500, 37: 500, 38: 500, 39: 500,
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40: 500, 41: 500, 42: 500, 43: 500, 44: 500, 45: 500, 46: 500, 47: 500,
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48: 500, 49: 500, 50: 500, 51: 500, 52: 500, 53: 500, 54: 500, 55: 500,
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56: 500, 57: 500, 58: 500, 59: 500, 60: 500, 61: 500, 62: 500, 63: 500,
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64: 778, 65: 778, 66: 778, 67: 778, 68: 778, 69: 778, 70: 778, 71: 778,
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72: 778, 73: 778, 74: 778, 75: 778, 76: 778, 77: 778, 78: 778, 79: 778,
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80: 778, 81: 778, 82: 778, 83: 778, 84: 778, 85: 778, 86: 778, 87: 778,
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88: 778, 89: 778, 90: 778, 91: 778, 92: 778, 93: 778, 94: 778, 95: 778,
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96: 778, 97: 778, 98: 778, 99: 778, 100: 778, 101: 778, 102: 778, 103: 778,
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104: 778, 105: 778, 106: 778, 107: 778, 108: 778, 109: 778, 110: 778, 111: 778,
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112: 778, 113: 778, 114: 778, 115: 778, 116: 778, 117: 778, 118: 778, 119: 778,
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120: 778, 121: 778, 122: 778, 123: 778, 124: 778, 125: 778, 126: 778,
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}.items():
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ZAPFDINGBATS[code] = width
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# Font metrics from Adobe AFM files
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FONTS = {
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"Courier": {
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"weights": COURIER,
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"font_bbox": [-23, -250, 715, 805],
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"ascent": 629,
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"descent": -157,
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"italic_angle": 0.0,
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"cap_height": 562,
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"stem_v": 51,
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"encoding": "StandardEncoding"
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},
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"Courier-Bold": {
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"weights": COURIER_BOLD,
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"font_bbox": [-113, -250, 849, 805],
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"ascent": 629,
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"descent": -157,
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"italic_angle": 0.0,
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"cap_height": 562,
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"stem_v": 68,
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"encoding": "StandardEncoding"
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},
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"Courier-Oblique": {
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"weights": COURIER_OBLIQUE,
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"font_bbox": [-23, -250, 715, 805],
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"ascent": 629,
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"descent": -157,
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"italic_angle": -12.0,
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"cap_height": 562,
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"stem_v": 51,
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"encoding": "StandardEncoding"
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},
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"Courier-BoldOblique": {
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"weights": COURIER_BOLDITALIC,
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"font_bbox": [-113, -250, 849, 805],
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"ascent": 629,
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"descent": -157,
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"italic_angle": -12.0,
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"cap_height": 562,
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"stem_v": 68,
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"encoding": "StandardEncoding"
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},
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"Times-Roman": {
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"weights": TIMES_ROMAN,
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"font_bbox": [-168, -218, 1000, 898],
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"ascent": 683,
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"descent": -217,
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"italic_angle": 0.0,
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"cap_height": 662,
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"stem_v": 51,
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"encoding": "StandardEncoding"
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},
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"Times-Bold": {
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"weights": TIMES_BOLD,
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"font_bbox": [-168, -218, 1000, 935],
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"ascent": 683,
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"descent": -217,
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"italic_angle": 0.0,
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"cap_height": 662,
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"stem_v": 68,
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"encoding": "StandardEncoding"
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},
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"Times-Italic": {
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"weights": TIMES_ITALIC,
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"font_bbox": [-168, -218, 1000, 898],
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"ascent": 683,
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"descent": -217,
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"italic_angle": -15.0,
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"cap_height": 662,
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"stem_v": 51,
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"encoding": "StandardEncoding"
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},
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"Times-BoldItalic": {
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"weights": TIMES_BOLDITALIC,
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"font_bbox": [-168, -218, 1000, 935],
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"ascent": 683,
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"descent": -217,
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"italic_angle": -15.0,
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"cap_height": 662,
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"stem_v": 68,
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"encoding": "StandardEncoding"
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},
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"Helvetica": {
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"weights": HELVETICA,
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"font_bbox": [-166, -225, 1000, 931],
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"ascent": 718,
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"descent": -207,
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"italic_angle": 0.0,
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"cap_height": 718,
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"stem_v": 51,
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"encoding": "StandardEncoding"
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},
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"Helvetica-Bold": {
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"weights": HELVETICA_BOLD,
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"font_bbox": [-170, -228, 1003, 962],
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"ascent": 718,
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"descent": -207,
|
|
"italic_angle": 0.0,
|
|
"cap_height": 718,
|
|
"stem_v": 68,
|
|
"encoding": "StandardEncoding"
|
|
},
|
|
"Helvetica-Oblique": {
|
|
"weights": HELVETICA_OBLIQUE,
|
|
"font_bbox": [-166, -225, 1000, 931],
|
|
"ascent": 718,
|
|
"descent": -207,
|
|
"italic_angle": -12.0,
|
|
"cap_height": 718,
|
|
"stem_v": 51,
|
|
"encoding": "StandardEncoding"
|
|
},
|
|
"Helvetica-BoldOblique": {
|
|
"weights": HELVETICA_BOLDITALIC,
|
|
"font_bbox": [-170, -228, 1003, 962],
|
|
"ascent": 718,
|
|
"descent": -207,
|
|
"italic_angle": -12.0,
|
|
"cap_height": 718,
|
|
"stem_v": 68,
|
|
"encoding": "StandardEncoding"
|
|
},
|
|
"Symbol": {
|
|
"weights": SYMBOL,
|
|
"font_bbox": [-180, -293, 1090, 1010],
|
|
"ascent": 1010,
|
|
"descent": -293,
|
|
"italic_angle": 0.0,
|
|
"cap_height": 662,
|
|
"stem_v": 68,
|
|
"encoding": "SymbolEncoding"
|
|
},
|
|
"ZapfDingbats": {
|
|
"weights": ZAPFDINGBATS,
|
|
"font_bbox": [-1, -143, 981, 820],
|
|
"ascent": 820,
|
|
"descent": -143,
|
|
"italic_angle": 0.0,
|
|
"cap_height": 820,
|
|
"stem_v": 51,
|
|
"encoding": "ZapfDingbatsEncoding"
|
|
},
|
|
}
|
|
|
|
def main():
|
|
output = {"fonts": {}}
|
|
|
|
for name, data in FONTS.items():
|
|
output["fonts"][name] = {
|
|
"weights": data["weights"],
|
|
"font_bbox": data["font_bbox"],
|
|
"ascent": data["ascent"],
|
|
"descent": data["descent"],
|
|
"italic_angle": data["italic_angle"],
|
|
"cap_height": data["cap_height"],
|
|
"stem_v": data["stem_v"],
|
|
"encoding": data["encoding"]
|
|
}
|
|
|
|
print(json.dumps(output, indent=2))
|
|
|
|
if __name__ == "__main__":
|
|
main()
|