Class: MathML::Util::SimpleLaTeX
- Inherits:
-
Object
- Object
- MathML::Util::SimpleLaTeX
- Includes:
- MathML::Util
- Defined in:
- lib/math_ml/util.rb
Constant Summary collapse
- DEFAULT =
{ :delimiter=>"\001", :math_env_list=>[ /\$((?:\\.|[^\\\$])#{MathML::LaTeX::MBEC}*?)\$/m, /\\\((#{MathML::LaTeX::MBEC}*?)\\\)/m ], :dmath_env_list=>[ /\$\$(#{MathML::LaTeX::MBEC}*?)\$\$/m, /\\\[(#{MathML::LaTeX::MBEC}*?)\\\]/m ], :escape_list=>[ /\\(.)/m ], :through_list=>[ ], :escape_any=> false, :without_parse=>false }
- @@default_latex =
nil
Constants included from MathML::Util
EQNARRAY_RE, ESCAPES, INVALID_RE, SINGLE_COMMAND_RE
Class Method Summary collapse
Instance Method Summary collapse
- #decode(encoded, data, without_parsed = false, &proc) ⇒ Object
- #decode_partial(type, encoded, data, &proc) ⇒ Object
- #encode(src, *proc_re, &proc) ⇒ Object
- #error_to_html(e) ⇒ Object
-
#initialize(options = {}) ⇒ SimpleLaTeX
constructor
A new instance of SimpleLaTeX.
- #latex_parser ⇒ Object
- #parse(data, parser = nil) ⇒ Object
- #parse_eqnarray(src, parser = nil) ⇒ Object
- #parse_single_command(src, parser = nil) ⇒ Object
- #reset_decode_proc ⇒ Object
- #reset_encode_proc ⇒ Object
- #reset_rescue_proc ⇒ Object
- #reset_unencode_proc ⇒ Object
- #set_decode_proc(&proc) ⇒ Object
- #set_encode_proc(*re, &proc) ⇒ Object
- #set_rescue_proc(&proc) ⇒ Object
- #set_unencode_proc(&proc) ⇒ Object
- #unencode(encoded, data, without_escape = false, &proc) ⇒ Object
Methods included from MathML::Util
collect_regexp, #collect_regexp, #escapeXML, escapeXML
Constructor Details
#initialize(options = {}) ⇒ SimpleLaTeX
Returns a new instance of SimpleLaTeX.
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# File 'lib/math_ml/util.rb', line 91 def initialize( = {}) @params = DEFAULT.merge() @params[:parser] = MathML::LaTeX::Parser.new unless @params[:parser] || @params[:without_parse] @params[:math_envs] = collect_regexp(@params[:math_env_list]) @params[:dmath_envs] = collect_regexp(@params[:dmath_env_list]) @params[:escapes] = collect_regexp(@params[:escape_list]) @params[:throughs] = collect_regexp(@params[:through_list]) reset_encode_proc reset_rescue_proc reset_decode_proc reset_unencode_proc end |
Class Method Details
.decode(src, data) ⇒ Object
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# File 'lib/math_ml/util.rb', line 323 def self.decode(src, data) @@default_latex.decode(src, data) end |
.encode(src) ⇒ Object
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# File 'lib/math_ml/util.rb', line 318 def self.encode(src) @@default_latex = self.new unless @@default_latex @@default_latex.encode(src) end |
Instance Method Details
#decode(encoded, data, without_parsed = false, &proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 233 def decode(encoded, data, without_parsed = false, &proc) return nil if encoded==nil proc = @decode_proc unless proc encoded.gsub(/#{Regexp.escape(@params[:delimiter])}([demu])(\d+)#{Regexp.escape(@params[:delimiter])}/) do i = $2.to_i t, d, s = case $1 when "d" [:dmath, without_parsed ? escapeXML(data.dsrc_list[i], true) : data.dmath_list[i], data.dsrc_list[i]] when "e" [:escape, data.escape_list[i], data.esrc_list[i]] when "m" [:math, without_parsed ? escapeXML(data.msrc_list[i], true) : data.math_list[i], data.msrc_list[i]] when "u" [:user, data.user_list[i], data.usrc_list[i]] end if proc proc.call(d, :type=>t, :index=>i, :src=>s) || d else d end end end |
#decode_partial(type, encoded, data, &proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 257 def decode_partial(type, encoded, data, &proc) return nil if encoded==nil head = case type when :math "m" when :dmath "d" when :escape "e" when :user "u" else return end encoded.gsub(/#{Regexp.escape(@params[:delimiter])}#{head}(\d+)#{Regexp.escape(@params[:delimiter])}/) do i = $1.to_i t, d, s = case head when "d" [:dmath, data.dmath_list[i], data.dsrc_list[i]] when "e" [:escape, data.escape_list[i], data.esrc_list[i]] when "m" [:math, data.math_list[i], data.msrc_list[i]] when "u" [:user, data.user_list[i], data.usrc_list[i]] end if proc proc.call(d, :type=>t, :index=>i, :src=>s) || "#{@params[:delimiter]}#{head}#{i}#{@params[:delimiter]}" else d end end end |
#encode(src, *proc_re, &proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 139 def encode(src, *proc_re, &proc) if proc_re.size>0 && proc_re[0].is_a?(MathData) data = proc_re.shift else data = MathData.new end proc_re = proc_re.size==0 ? @encode_proc_re : collect_regexp(proc_re) proc = @encode_proc unless proc s = StringScanner.new(src) encoded = "" until s.eos? if s.scan(/(.*?)(((((#{@params[:throughs]})|#{@params[:dmath_envs]})|#{@params[:math_envs]})|#{proc_re})|#{@params[:escapes]})/m) encoded << s[1] case when s[6] encoded << s[6] when s[5], s[4] env_src = s[5] || s[4] if @params[:dmath_envs]=~env_src encoded << "#{@params[:delimiter]}d#{data.dsrc_list.size}#{@params[:delimiter]}" data.dsrc_list << env_src else encoded << "#{@params[:delimiter]}m#{data.msrc_list.size}#{@params[:delimiter]}" data.msrc_list << env_src end when s[3] size = s[3].size s.pos = left = s.pos-size if r=proc.call(s) right = s.pos encoded << "#{@params[:delimiter]}u#{data.user_list.size}#{@params[:delimiter]}" data.user_list << r data.usrc_list << s.string[left...right] else encoded << s.peek(size) s.pos = s.pos+size end when s[2] encoded << "#{@params[:delimiter]}e#{data.escape_list.size}#{@params[:delimiter]}" @params[:escapes]=~s[2] data.esrc_list << s[2] data.escape_list << escapeXML($+, true) end else encoded << s.rest s.terminate end end parse(data, @params[:parser]) unless @params[:without_parse] return encoded, data end |
#error_to_html(e) ⇒ Object
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# File 'lib/math_ml/util.rb', line 196 def error_to_html(e) "<br />\n#{escapeXML(e.)}<br />\n<code>#{escapeXML(e.done).gsub(/\n/, "<br />\n")}<strong>#{escapeXML(e.rest).gsub(/\n/, "<br />\n")}</strong></code><br />" end |
#latex_parser ⇒ Object
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# File 'lib/math_ml/util.rb', line 200 def latex_parser @params[:parser] = MathML::LaTeX::Parser.new unless @params[:parser] @params[:parser] end |
#parse(data, parser = nil) ⇒ Object
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# File 'lib/math_ml/util.rb', line 205 def parse(data, parser=nil) parser = latex_parser unless parser (data.math_list.size...data.msrc_list.size).each do |i| begin @params[:math_envs]=~data.msrc_list[i] data.math_list[i] = parser.parse($+) rescue MathML::LaTeX::ParseError => e if @rescue_proc data.math_list[i] = @rescue_proc.call(e) else data.math_list[i] = error_to_html(e) end end end (data.dmath_list.size...data.dsrc_list.size).each do |i| begin @params[:dmath_envs]=~data.dsrc_list[i] data.dmath_list[i] = parser.parse($+, true) rescue MathML::LaTeX::ParseError => e if @rescue_proc data.dmath_list[i] = @rescue_proc.call(e) else data.dmath_list[i] = error_to_html(e) end end end end |
#parse_eqnarray(src, parser = nil) ⇒ Object
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# File 'lib/math_ml/util.rb', line 327 def parse_eqnarray(src, parser=nil) src = "\\begin{array}{ccc}#{src}\\end{array}" parser = latex_parser unless parser begin parser.parse(src, true) rescue MathML::LaTeX::ParseError => e e = MathML::LaTeX::ParseError.new(e., e.rest.sub(/\\end\{array\}\z/, '\end{eqnarray}'), e.done.sub(/\A\\begin\{array\}\{ccc\}/, '\begin{eqnarray}')) @rescue_proc ? @rescue_proc.call(e) : error_to_html(e) end end |
#parse_single_command(src, parser = nil) ⇒ Object
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# File 'lib/math_ml/util.rb', line 340 def parse_single_command(src, parser=nil) s = src[SINGLE_COMMAND_RE, 1] parser = latex_parser unless parser begin parser.parse(s) rescue MathML::LaTeX::ParseError => e src[SINGLE_COMMAND_RE, 2] end end |
#reset_decode_proc ⇒ Object
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# File 'lib/math_ml/util.rb', line 123 def reset_decode_proc @decode_proc = nil end |
#reset_encode_proc ⇒ Object
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# File 'lib/math_ml/util.rb', line 105 def reset_encode_proc @encode_proc_re = INVALID_RE @encode_proc = nil end |
#reset_rescue_proc ⇒ Object
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# File 'lib/math_ml/util.rb', line 115 def reset_rescue_proc @rescue_proc = nil end |
#reset_unencode_proc ⇒ Object
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# File 'lib/math_ml/util.rb', line 135 def reset_unencode_proc @unencode_proc = nil end |
#set_decode_proc(&proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 127 def set_decode_proc(&proc) @decode_proc = proc end |
#set_encode_proc(*re, &proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 110 def set_encode_proc(*re, &proc) @encode_proc_re = collect_regexp(re) @encode_proc = proc end |
#set_rescue_proc(&proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 119 def set_rescue_proc(&proc) @rescue_proc = proc end |
#set_unencode_proc(&proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 131 def set_unencode_proc(&proc) @unencode_proc = proc end |
#unencode(encoded, data, without_escape = false, &proc) ⇒ Object
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# File 'lib/math_ml/util.rb', line 293 def unencode(encoded, data, without_escape=false, &proc) return nil if encoded==nil proc = @unencode_proc unless proc encoded.gsub(/#{Regexp.escape(@params[:delimiter])}([demu])(\d+)#{Regexp.escape(@params[:delimiter])}/) do i = $2.to_i t, s = case $1 when "d" [:dmath, data.dsrc_list[i]] when "e" [:escape, data.esrc_list[i]] when "m" [:math, data.msrc_list[i]] when "u" [:user, data.usrc_list[i]] end s = escapeXML(s, true) unless without_escape if proc proc.call(s, :type=>t, :index=>i) || s else s end end end |