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annotate abcfield.py @ 689:4ac5d00c1328

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author Jim Hague <jim.hague@acm.org>
date Sat, 16 Sep 2017 23:09:15 +0100
parents 82e818c41e81
children 972d3dab1142
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daa3b76bd11f More abcfield.py updates and mark it Python 3.
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1 #!/usr/bin/env python3
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2 #
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3 # Extact a text field (title, by default) from a .abc file, and print it out
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4 # with any ABC accented characters converted to HTML (default) or Latex.
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5 #
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6 # Optionally rearrange a field into display format:
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7 # * In Title fields, change 'sort' form such as 'Exploding Potato, The'
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8 # to display format 'The Exploding Potato'.
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9 # * In Key fields, translate the ABC key representation to full text,
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10 # e.g. G#dor becomes G# Dorian.
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11 #
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12 # Recognise continuation header fields and print those too. The ABC standard
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13 # defines continuation fields as starting ':+'. Regrettably none of the tools
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14 # I am using the Booke recognise that syntax, so I am adopting a Booke
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15 # convention of '<header>:+' *also* being a continuation. Note that a
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16 # continuation is a distinct line in the field value; the value has a line
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17 # break between it and the previous line.
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18 #
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19
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20 import optparse
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21 import pathlib
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22 import re
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23 import subprocess
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24 import sys
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25
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26 accentedletters = {
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27 # Acute accents
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28 "'A" : ("&Aacute;", "\\'{A}"),
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29 "'E" : ("&Eacute;", "\\'{E}"),
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30 "'I" : ("&Iacute;", "\\'{I}"),
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31 "'O" : ("&Oacute;", "\\'{O}"),
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32 "'U" : ("&Uacute;", "\\'{U}"),
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33 "'Y" : ("&Yacute;", "\\'{Y}"),
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34 "'a" : ("&aacute;", "\\'{a}"),
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35 "'e" : ("&eacute;", "\\'{e}"),
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36 "'i" : ("&iacute;", "\\'{i}"),
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37 "'o" : ("&oacute;", "\\'{o}"),
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38 "'u" : ("&uacute;", "\\'{u}"),
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39 "'y" : ("&yacute;", "\\'{y}"),
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40
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41 # Grave accents
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42 "`A" : ("&Agrave;", "\\`{A}"),
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43 "`E" : ("&Egrave;", "\\`{E}"),
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44 "`I" : ("&Igrave;", "\\`{I}"),
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45 "`O" : ("&Ograve;", "\\`{O}"),
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46 "`U" : ("&Ugrave;", "\\`{U}"),
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47 "`a" : ("&agrave;", "\\`{a}"),
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48 "`e" : ("&egrave;", "\\`{e}"),
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49 "`i" : ("&igrave;", "\\`{i}"),
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50 "`o" : ("&ograve;", "\\`{o}"),
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51 "`u" : ("&ugrave;", "\\`{u}"),
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52
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53 # Umlauts
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54 "\"A" : ("&Auml;", "\\\"{A}"),
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55 "\"E" : ("&Euml;", "\\\"{E}"),
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56 "\"I" : ("&Iuml;", "\\\"{I}"),
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57 "\"O" : ("&Ouml;", "\\\"{O}"),
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58 "\"U" : ("&Uuml;", "\\\"{U}"),
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59 "\"Y" : ("&Yuml;", "\\\"{Y}"),
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60 "\"a" : ("&auml;", "\\\"{a}"),
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61 "\"e" : ("&euml;", "\\\"{e}"),
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62 "\"i" : ("&iuml;", "\\\"{\i}"),
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63 "\"o" : ("&ouml;", "\\\"{o}"),
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64 "\"u" : ("&uuml;", "\\\"{u}"),
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65 "\"y" : ("&yuml;", "\\\"{y}"),
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66
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67 # Circumflexes
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68 "^A" : ("&Acirc;", "\\^{A}"),
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69 "^E" : ("&Ecirc;", "\\^{E}"),
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70 "^I" : ("&Icirc;", "\\^{I}"),
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71 "^O" : ("&Ocirc;", "\\^{O}"),
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72 "^U" : ("&Ucirc;", "\\^{U}"),
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73 "^a" : ("&acirc;", "\\^{a}"),
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74 "^e" : ("&ecirc;", "\\^{e}"),
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75 "^i" : ("&icirc;", "\\^{\i}"),
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76 "^o" : ("&ocirc;", "\\^{o}"),
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77 "^u" : ("&ucirc;", "\\^{u}"),
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78
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79 # Tilde
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80 "~A" : ("&Atilde;", "\\~{A}"),
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81 "~N" : ("&Ntilde;", "\\~{N}"),
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82 "~O" : ("&Otilde;", "\\~{O}"),
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83 "~a" : ("&atilde;", "\\~{a}"),
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84 "~n" : ("&ntilde;", "\\~{n}"),
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85 "~o" : ("&otilde;", "\\~{o}"),
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86
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87 # Cedilla
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88 ",C" : ("&Ccedil;", "\\c{C}"),
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89 ",c" : ("&ccedil;", "\\c{c}"),
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90
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91 # Slash
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92 "/O" : ("&Oslash;", "\\O"),
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93 "/o" : ("&oslash;", "\\o"),
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94
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95 # Ring
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96 "AA" : ("&Aring;", "\\r{A}"),
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97 "aa" : ("&aring;", "\\r{a}"),
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98
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99 # Ligatures
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100 "AE" : ("&AElig;", "\\AE"),
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101 "ae" : ("&aelig;", "\\ae"),
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102 "ss" : ("&szlig;", "\\ss"),
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103 }
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104
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105 abckeys = {
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106 "m": "Minor",
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107 "min": "Minor",
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108 "mix": "Mixolydian",
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109 "dor": "Dorian",
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110 "phr": "Phrygian",
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111 "lyd": "Lydian",
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112 "loc": "Locrian",
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113 }
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114
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115 # Convert ABC accented chars to HTML entities or LaTex.
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116 def convertAccents(t, latex=False):
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117 res = ""
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118 while True:
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119 p = t.partition('\\')
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120 res += p[0]
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121 if p[1] == "":
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122 break
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123 abc = p[2][0:2]
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124 t = p[2][2:]
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125 if abc in accentedletters:
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126 if latex:
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127 res += accentedletters[abc][1]
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128 else:
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129 res += accentedletters[abc][0]
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130 else:
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131 res += "\\" + abc
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132 return res
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diff changeset
133
586
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134 # Convert Title fields from sort to display, so Bat, The->The Bat.
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diff changeset
135 def convertTitleToDisplay(t):
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diff changeset
136 p = t.rpartition(',')
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
137 if p[1] == "":
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
138 return t
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
139 else:
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diff changeset
140 return p[2].strip() + " " + p[0].strip()
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
141
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
142 # Convert Key field from ABC to display, so G#dor->G# Dorian.
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
143 def convertKeyToDisplay(t):
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diff changeset
144 letter = t[0].upper()
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diff changeset
145 accidental = ""
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diff changeset
146 mode = ""
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diff changeset
147 try:
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diff changeset
148 accidental = t[1]
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
149 if accidental == '#' or accidental == 'b':
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
150 mode = t[2:]
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
151 else:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
152 accidental = ""
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153 mode = t[1:]
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
154 except IndexError:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
155 pass
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
156 mode = mode.strip().lower()
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
157 return letter + accidental + ' ' + abckeys.get(mode, "Major")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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158
591
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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diff changeset
159 # Convert input string from Markdown to HTML or LaTeX. Fix up link
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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diff changeset
160 # targets so any 'foo.abc' target links to the tune with that name.
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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parents: 588
diff changeset
161 def convertMarkdown(t, latex):
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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parents: 588
diff changeset
162 if latex:
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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diff changeset
163 target = "--to=latex"
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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parents: 588
diff changeset
164 else:
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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165 target = "--to=html"
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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diff changeset
166 res = subprocess.check_output(['pandoc', '--from=markdown', target], input=t, universal_newlines=True)
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
Jim Hague <jim.hague@acm.org>
parents: 588
diff changeset
167 if latex:
592
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
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diff changeset
168 res = re.sub(r'\\href{(.*?).abc}', r'\\hyperlink{\1}', res)
591
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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parents: 588
diff changeset
169 else:
592
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
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diff changeset
170 res = re.sub(r'href="(.*?).abc"', r'href="\1.html"', res)
593
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
171 return res.strip()
591
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
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parents: 588
diff changeset
172
592
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
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diff changeset
173 # Implement a custom Markdown shorthand for referencing ABC files.
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
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parents: 591
diff changeset
174 # <foo.abc> will expand to ['title of foo'](foo.abc).
593
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
175 def expandCustomMarkdown(t, dir, latex):
592
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
Jim Hague <jim.hague@acm.org>
parents: 591
diff changeset
176 # Given a match to (foo.abc), return a markdown link to the tune with the
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
Jim Hague <jim.hague@acm.org>
parents: 591
diff changeset
177 # title of the tune as the text of the link.
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
Jim Hague <jim.hague@acm.org>
parents: 591
diff changeset
178 def getTitle(m):
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
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diff changeset
179 fname = m.group(1) + ".abc"
593
82e818c41e81 Give ABC file directory when expanding markdown.
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diff changeset
180 path = pathlib.Path(dir, fname)
82e818c41e81 Give ABC file directory when expanding markdown.
Jim Hague <jim.hague@acm.org>
parents: 592
diff changeset
181 with path.open() as f:
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
182 return "[" + getFieldDisplayText(f, dir, "T", latex) + "](" + fname + ")"
592
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
Jim Hague <jim.hague@acm.org>
parents: 591
diff changeset
183 return re.sub(r'<(.*?).abc>', getTitle, t)
9986c67edf91 Implement custom markdown <foo.abc> to reference tune.
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diff changeset
184
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
185 # Return the raw text for a given field. Optionally the nth field is taken,
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
186 # or the field data must start with a designated string to be recognised.
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
187 def getFieldText(inf, field, n = 1, starts = None):
588
afc031477784 Replace sed substitution with Python templating for HTML and LaTeX output.
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diff changeset
188 res = ""
110
a63e39fc3410 Add basic diacritic handling for LaTeX and web.
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189 for line in inf:
a63e39fc3410 Add basic diacritic handling for LaTeX and web.
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diff changeset
190 line = line.strip()
581
760d0ae5acea Revise abcfield.py to recognise continuation fields.
Jim Hague <jim.hague@acm.org>
parents: 326
diff changeset
191 if len(line) > 2 and line[1] == ':':
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
192 if line[0] == "+" or (line[0] == field and line[2] == "+"):
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
193 if not res:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
194 continue
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
195 if line[0] == "+":
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
196 line = line[2:]
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
197 else:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
198 line = line[3:]
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
199 res = res + '\n' + line.strip()
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
200 else:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
201 if res:
581
760d0ae5acea Revise abcfield.py to recognise continuation fields.
Jim Hague <jim.hague@acm.org>
parents: 326
diff changeset
202 break
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
203 if line[0] == field:
581
760d0ae5acea Revise abcfield.py to recognise continuation fields.
Jim Hague <jim.hague@acm.org>
parents: 326
diff changeset
204 line = line[2:].strip()
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
205 if starts:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
206 if line.find(starts) != 0:
581
760d0ae5acea Revise abcfield.py to recognise continuation fields.
Jim Hague <jim.hague@acm.org>
parents: 326
diff changeset
207 continue
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
208 line = line[len(starts):].strip()
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
209 if n > 1:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
210 n = n - 1
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
211 continue
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
212 res = line
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
213 return res
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
214
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
215 # Return display text for a given field.
593
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
216 def getFieldDisplayText(inf, dir, field, n = 1, starts = None, latex = False):
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
217 res = getFieldText(inf, field, n, starts)
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
218 if res:
591
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
Jim Hague <jim.hague@acm.org>
parents: 588
diff changeset
219 res = convertAccents(res, latex)
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
220 if field.upper() == "T":
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
221 res = convertTitleToDisplay(res)
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
222 elif field.upper() == "K":
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
223 res = convertKeyToDisplay(res)
591
2face6618bf3 Convert Markdown in N and H fields. Fix up .abc links.
Jim Hague <jim.hague@acm.org>
parents: 588
diff changeset
224 elif field.upper() in ["H", "N"]:
593
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
225 res = convertMarkdown(expandCustomMarkdown(res, dir, latex), latex)
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
226 return res
110
a63e39fc3410 Add basic diacritic handling for LaTeX and web.
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diff changeset
227
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
228 if __name__ == "__main__":
593
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
229 def process(inf, dir, options):
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
230 if options.display:
593
82e818c41e81 Give ABC file directory when expanding markdown.
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parents: 592
diff changeset
231 line = getFieldDisplayText(inf, dir, options.field, options.index, options.starts, options.latex)
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
232 else:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
233 line = getFieldText(inf, options.field, options.index, options.starts)
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
234 if line:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
235 print(line)
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
236 return True
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
237 else:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
238 return False
110
a63e39fc3410 Add basic diacritic handling for LaTeX and web.
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parents:
diff changeset
239
586
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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diff changeset
240 # execute only if run as a script
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
241 parser = optparse.OptionParser(usage="usage: %prog [options] [filename]\n\n"
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
242 " Extract field data from ABC file.")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
243 parser.add_option("-f", "--field", dest="field", default="T",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
244 help="extract the field FIELD", metavar="FIELD")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
245 parser.add_option("-l", "--latex", dest="latex",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
246 action="store_true", default=False,
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
247 help="convert special characters for LaTeX")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
248 parser.add_option("-d", "--display", dest="display",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
249 action="store_true", default=False,
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
250 help="convert to display text")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
251 parser.add_option("-n", "--index", dest="index",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
252 action="store", type="int", default=1,
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
253 help="report INDEXth value [default: %default]",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
254 metavar="INDEX")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
255 parser.add_option("-s", "--starts", dest="starts",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
Jim Hague <jim.hague@acm.org>
parents: 584
diff changeset
256 action="store", type="string", default=None,
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
257 help="report only if line starts CONTENT and remove CONTENT",
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
258 metavar="CONTENT")
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
259 (options, args) = parser.parse_args()
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
260
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
261 res = False
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
262 if len(args) > 0:
daa3b76bd11f More abcfield.py updates and mark it Python 3.
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parents: 584
diff changeset
263 for arg in args:
593
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264 path = pathlib.Path(arg)
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265 with path.open() as f:
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266 res = res or process(f, path.parent, options)
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267 else:
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268 res = process(sys.stdin, ".", options)
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269 sys.exit(int(not res))