Class: Tex2id::Converter
Defined Under Namespace
Modules: Constants
Constant Summary
Constants included
from Constants
Constants::CHAR_MAP, Constants::CHAR_MAP_PATTERN, Constants::MACROS, Constants::MACROS_IN_SUPERSCRIPT, Constants::TOKEN_PATTERN
Instance Method Summary
collapse
Constructor Details
#initialize(source, only_fix_md2inao: false) ⇒ Converter
Returns a new instance of Converter.
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# File 'lib/tex2id/converter.rb', line 6
def initialize(source, only_fix_md2inao: false)
@source = source
@use_math = false
@only_fix_md2inao = only_fix_md2inao
@state_stack = []
@token_stack = []
end
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Instance Method Details
#apply_char_map(s) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 120
def apply_char_map(s)
s = s.gsub(CHAR_MAP_PATTERN) do |matched|
CHAR_MAP[matched] || matched
end
end
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#check_use_math(source) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 25
def check_use_math(source)
source.sub(/\bUseMath:\s+(true|false)\b/m) {
@use_math = (Regexp.last_match[1] == "true")
""
}
end
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#convert ⇒ Object
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# File 'lib/tex2id/converter.rb', line 16
def convert
pass1 = check_use_math(@source)
if use_math?
convert_math(pass1)
else
pass1
end
end
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#convert_display_math(source) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 38
def convert_display_math(source)
source.gsub(/\$\$(.*?)\$\$/m) {
tex_source = fix_md2inao($1.strip)
next "$$#{tex_source}$$" if @only_fix_md2inao
if (m = /%filename:\s*(\S+)\s*\z/.match(tex_source))
"<CharStyle:赤字>画像を挿入:#{m[1]}<CharStyle:>"
else
[ "<pstyle:半行アキ>",
"<pstyle:数式>" + convert_tex_source(tex_source),
].join("\n")
end
}.gsub(/<ParaStyle:本文>(<pstyle:半行アキ>)/) { $1 }
end
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#convert_inline_math(source) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 53
def convert_inline_math(source)
source.each_line.map { |line|
case line
when /\A<ParaStyle:リスト>/,
/\A<ParaStyle:リスト白文字>/
else
inline_commands = []
line.gsub!(/<CharStyle:コマンド>[^<]+<CharStyle:>/) do |matched|
id = inline_commands.length
inline_commands << matched
"<tex2id_inline_commands[#{id}]>"
end
line.gsub!(/\$(.*?)\$/) do
tex_source = fix_md2inao($1.strip)
if @only_fix_md2inao
"$" + tex_source + "$"
else
convert_tex_source(tex_source)
end
end
line.gsub!(/<tex2id_inline_commands\[(\d+)\]>/) do
inline_commands[$1.to_i]
end
end
line
}.join('')
end
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#convert_math(source) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 32
def convert_math(source)
pass1 = convert_display_math(source)
pass2 = convert_inline_math(pass1)
pass2
end
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#convert_tex_source(source) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 82
def convert_tex_source(source)
buf = ""
result = ""
source.scan(TOKEN_PATTERN) do |token|
if buf.length > 0 && token[12].nil?
result << process_normal_characters(buf)
buf.clear
end
case
when (tok = token[0])
result << "<cstyle:数式ローマン>" + tok + "<cstyle:>"
when (tok = token[1])
result << process_macros(tok)
when (tok = token[2])
result << tok
when (tok = token[3] || token[4] || token[5])
tok = process_macros(tok) if token[5]
if (tok2 = token[6] || token[7])
result << process_superscript_on_subscript(tok2, tok)
else
result << "<cstyle:数式下付き>" + tok + "<cstyle:>"
end
when (tok = token[8] || token[9] || token[10])
result << "<cstyle:数式上付き>" + apply_char_map(tok) + "<cstyle:>"
when (tok = token[11])
result << process_number(tok)
when (tok = token[12])
buf << tok
end
end
result << process_normal_characters(buf) if buf.length > 0
result
end
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#fix_md2inao(source) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 153
def fix_md2inao(source)
source.dup.tap do |s|
s.gsub!(/<CharStyle:(?:イタリック(?:(変形斜体))?)?>/, '_')
s.gsub!(/(?:<005C>){2}/, '\\')
end
end
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#process_macros(s) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 139
def process_macros(s)
MACROS[s] || "\\#{s}"
end
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#process_normal_characters(s) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 126
def process_normal_characters(s)
s = apply_char_map(s)
"<cstyle:数式>" + s + "<cstyle:>"
end
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#process_number(s) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 143
def process_number(s)
s.gsub!(/[-\u{2212}]\\infty/) {|x| "<ctk:-150>\u{2212}<ctk:><F031>" }
s.gsub!(/\\infty/) {|x| '<F031>' }
if s[0] == '-' || s[0] == "\u{2212}"
s[0,1] = "<ctk:-300>\u{2212}<ctk:>"
end
"<cstyle:数式>#{s}<cstyle:>"
end
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#process_superscript_on_subscript(superscript, subscript) ⇒ Object
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# File 'lib/tex2id/converter.rb', line 131
def process_superscript_on_subscript(superscript, subscript)
converted_superscript = superscript.dup
MACROS_IN_SUPERSCRIPT.each do |key, value|
converted_superscript.gsub!(key, value)
end
"<cstyle:数式下付き><cr:1><crstr:#{converted_superscript}>#{subscript}<cr:><crstr:><cstyle:>"
end
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#use_math? ⇒ Boolean
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# File 'lib/tex2id/converter.rb', line 14
def use_math? = @use_math
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