v0.4.0

These are incompatible, tho.

* Theme is now a property of the formatter instead
  of passing it arounf
* get_style_defs is now style_defs

.ameba.yml

@@ -1,5 +1,5 @@
 # This configuration file was generated by `ameba --gen-config`
-# on 2024-08-04 23:09:09 UTC using Ameba version 1.6.1.
+# on 2024-08-12 22:00:49 UTC using Ameba version 1.6.1.
 # The point is for the user to remove these configuration records
 # one by one as the reported problems are removed from the code base.
 
@@ -9,7 +9,7 @@ Documentation/DocumentationAdmonition:
   Description: Reports documentation admonitions
   Timezone: UTC
   Excluded:
-  - src/tartrazine.cr
+  - src/lexer.cr
   - src/actions.cr
   Admonitions:
   - TODO
@@ -17,3 +17,105 @@ Documentation/DocumentationAdmonition:
   - BUG
   Enabled: true
   Severity: Warning
+
+# Problems found: 22
+# Run `ameba --only Lint/MissingBlockArgument` for details
+Lint/MissingBlockArgument:
+  Description: Disallows yielding method definitions without block argument
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  Enabled: true
+  Severity: Warning
+
+# Problems found: 1
+# Run `ameba --only Lint/NotNil` for details
+Lint/NotNil:
+  Description: Identifies usage of `not_nil!` calls
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  Enabled: true
+  Severity: Warning
+
+# Problems found: 34
+# Run `ameba --only Lint/ShadowingOuterLocalVar` for details
+Lint/ShadowingOuterLocalVar:
+  Description: Disallows the usage of the same name as outer local variables for block
+    or proc arguments
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  Enabled: true
+  Severity: Warning
+
+# Problems found: 1
+# Run `ameba --only Lint/UnreachableCode` for details
+Lint/UnreachableCode:
+  Description: Reports unreachable code
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  Enabled: true
+  Severity: Warning
+
+# Problems found: 6
+# Run `ameba --only Lint/UselessAssign` for details
+Lint/UselessAssign:
+  Description: Disallows useless variable assignments
+  ExcludeTypeDeclarations: false
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  Enabled: true
+  Severity: Warning
+
+# Problems found: 3
+# Run `ameba --only Naming/BlockParameterName` for details
+Naming/BlockParameterName:
+  Description: Disallows non-descriptive block parameter names
+  MinNameLength: 3
+  AllowNamesEndingInNumbers: true
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  AllowedNames:
+  - _
+  - e
+  - i
+  - j
+  - k
+  - v
+  - x
+  - y
+  - ex
+  - io
+  - ws
+  - op
+  - tx
+  - id
+  - ip
+  - k1
+  - k2
+  - v1
+  - v2
+  ForbiddenNames: []
+  Enabled: true
+  Severity: Convention
+
+# Problems found: 1
+# Run `ameba --only Naming/RescuedExceptionsVariableName` for details
+Naming/RescuedExceptionsVariableName:
+  Description: Makes sure that rescued exceptions variables are named as expected
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  AllowedNames:
+  - e
+  - ex
+  - exception
+  - error
+  Enabled: true
+  Severity: Convention
+
+# Problems found: 6
+# Run `ameba --only Naming/TypeNames` for details
+Naming/TypeNames:
+  Description: Enforces type names in camelcase manner
+  Excluded:
+  - pygments/tests/examplefiles/cr/test.cr
+  Enabled: true
+  Severity: Convention

README.md

@@ -4,17 +4,17 @@ Tartrazine is a library to syntax-highlight code. It is
 a port of [Pygments](https://pygments.org/) to
 [Crystal](https://crystal-lang.org/). Kind of.
 
-It's not currently usable because it's not finished, but:
-
-* The lexers work for the implemented languages
-* The provided styles work
-* There is a very very simple HTML formatter
+The CLI tool can be used to highlight many things in many styles.
 
 # A port of what? Why "kind of"?
 
-Because I did not read the Pygments code. And this is actually
-based on [Chroma](https://github.com/alecthomas/chroma) ...
-although I did not read that code either.
+Pygments is a staple of the Python ecosystem, and it's great.
+It lets you highlight code in many languages, and it has many
+themes. Chroma is "Pygments for Go", it's actually a port of
+Pygments to Go, and it's great too.
+
+I wanted that in Crystal, so I started this project. But I did
+not read much of the Pygments code. Or much of Chroma's.
 
 Chroma has taken most of the Pygments lexers and turned them into
 XML descriptions. What I did was take those XML files from Chroma

shard.yml

@@ -1,5 +1,5 @@
 name: tartrazine
-version: 0.2.0
+version: 0.4.0
 
 authors:
   - Roberto Alsina <roberto.alsina@gmail.com>

spec/tartrazine_spec.cr

@@ -14,15 +14,18 @@ unicode_problems = {
   "#{__DIR__}/tests/java/test_string_literals.txt",
   "#{__DIR__}/tests/json/test_strings.txt",
   "#{__DIR__}/tests/systemd/example1.txt",
+  "#{__DIR__}/tests/c++/test_unicode_identifiers.txt",
 }
 
 # These testcases fail because of differences in the way chroma and tartrazine tokenize
 # but tartrazine is correct
 bad_in_chroma = {
   "#{__DIR__}/tests/bash_session/test_comment_after_prompt.txt",
+  "#{__DIR__}/tests/html/javascript_backtracking.txt",
   "#{__DIR__}/tests/java/test_default.txt",
   "#{__DIR__}/tests/java/test_multiline_string.txt",
   "#{__DIR__}/tests/java/test_numeric_literals.txt",
+  "#{__DIR__}/tests/octave/test_multilinecomment.txt",
   "#{__DIR__}/tests/php/test_string_escaping_run.txt",
   "#{__DIR__}/tests/python_2/test_cls_builtin.txt",
 }
@@ -30,19 +33,14 @@ bad_in_chroma = {
 known_bad = {
   "#{__DIR__}/tests/bash_session/fake_ps2_prompt.txt",
   "#{__DIR__}/tests/bash_session/prompt_in_output.txt",
-  "#{__DIR__}/tests/bash_session/test_newline_in_echo_no_ps2.txt",
-  "#{__DIR__}/tests/bash_session/test_newline_in_ls_ps2.txt",
   "#{__DIR__}/tests/bash_session/ps2_prompt.txt",
-  "#{__DIR__}/tests/bash_session/test_newline_in_ls_no_ps2.txt",
-  "#{__DIR__}/tests/bash_session/test_virtualenv.txt",
+  "#{__DIR__}/tests/bash_session/test_newline_in_echo_no_ps2.txt",
   "#{__DIR__}/tests/bash_session/test_newline_in_echo_ps2.txt",
-  "#{__DIR__}/tests/c/test_string_resembling_decl_end.txt",
-  "#{__DIR__}/tests/html/css_backtracking.txt",
+  "#{__DIR__}/tests/bash_session/test_newline_in_ls_no_ps2.txt",
+  "#{__DIR__}/tests/bash_session/test_newline_in_ls_ps2.txt",
+  "#{__DIR__}/tests/bash_session/test_virtualenv.txt",
   "#{__DIR__}/tests/mcfunction/data.txt",
   "#{__DIR__}/tests/mcfunction/selectors.txt",
-  "#{__DIR__}/tests/php/anonymous_class.txt",
-  "#{__DIR__}/tests/html/javascript_unclosed.txt",
-
 }
 
 # Tests that fail because of a limitation in PCRE2

src/actions.cr

@@ -30,11 +30,11 @@ module Tartrazine
     end
 
     # ameba:disable Metrics/CyclomaticComplexity
-    def emit(match : Regex::MatchData?, lexer : Lexer, match_group = 0) : Array(Token)
+    def emit(match : MatchData, lexer : Lexer, match_group = 0) : Array(Token)
       case type
       when "token"
-        raise Exception.new "Can't have a token without a match" if match.nil?
-        [Token.new(type: xml["type"], value: match[match_group])]
+        raise Exception.new "Can't have a token without a match" if match.empty?
+        [Token.new(type: xml["type"], value: String.new(match[match_group].value))]
       when "push"
         states_to_push = xml.attributes.select { |attrib|
           attrib.name == "state"
@@ -79,23 +79,29 @@ module Tartrazine
         # the action is skipped.
         result = [] of Token
         @actions.each_with_index do |e, i|
-          next if match[i + 1]?.nil?
+          begin
+            next if match[i + 1].size == 0
+          rescue IndexError
+            # FIXME: This should not actually happen
+            # No match for this group
+            next
+          end
           result += e.emit(match, lexer, i + 1)
         end
         result
       when "using"
         # Shunt to another lexer entirely
-        return [] of Token if match.nil?
+        return [] of Token if match.empty?
         lexer_name = xml["lexer"].downcase
         Log.trace { "to tokenize: #{match[match_group]}" }
-        Tartrazine.lexer(lexer_name).tokenize(match[match_group], usingself: true)
+        Tartrazine.lexer(lexer_name).tokenize(String.new(match[match_group].value), usingself: true)
       when "usingself"
         # Shunt to another copy of this lexer
-        return [] of Token if match.nil?
+        return [] of Token if match.empty?
 
         new_lexer = Lexer.from_xml(lexer.xml)
         Log.trace { "to tokenize: #{match[match_group]}" }
-        new_lexer.tokenize(match[match_group], usingself: true)
+        new_lexer.tokenize(String.new(match[match_group].value), usingself: true)
       when "combined"
         # Combine two states into one anonymous state
         states = xml.attributes.select { |attrib|

src/bytes_regex.cr

@@ -0,0 +1,75 @@
+module BytesRegex
+  extend self
+
+  class Regex
+    def initialize(pattern : String, multiline = false, dotall = false, ignorecase = false, anchored = false)
+      flags = LibPCRE2::UTF | LibPCRE2::DUPNAMES | LibPCRE2::UCP | LibPCRE2::NO_UTF_CHECK
+      flags |= LibPCRE2::MULTILINE if multiline
+      flags |= LibPCRE2::DOTALL if dotall
+      flags |= LibPCRE2::CASELESS if ignorecase
+      flags |= LibPCRE2::ANCHORED if anchored
+      if @re = LibPCRE2.compile(
+           pattern,
+           pattern.bytesize,
+           flags,
+           out errorcode,
+           out erroroffset,
+           nil)
+      else
+        msg = String.new(256) do |buffer|
+          bytesize = LibPCRE2.get_error_message(errorcode, buffer, 256)
+          {bytesize, 0}
+        end
+        raise Exception.new "Error #{msg} compiling regex at offset #{erroroffset}"
+      end
+    end
+
+    def finalize
+      LibPCRE2.code_free(@re)
+    end
+
+    def match(str : Bytes, pos = 0) : Array(Match)
+      match_data = LibPCRE2.match_data_create_from_pattern(@re, nil)
+      match = [] of Match
+      rc = LibPCRE2.match(
+        @re,
+        str,
+        str.size,
+        pos,
+        LibPCRE2::NO_UTF_CHECK,
+        match_data,
+        nil)
+      if rc < 0
+        # No match, do nothing
+      else
+        ovector = LibPCRE2.get_ovector_pointer(match_data)
+        (0...rc).each do |i|
+          m_start = ovector[2 * i]
+          m_size = ovector[2 * i + 1] - m_start
+          if m_size == 0
+            m_value = Bytes.new(0)
+          else
+            m_value = str[m_start...m_start + m_size]
+          end
+          match << Match.new(m_value, m_start, m_size)
+        end
+      end
+      LibPCRE2.match_data_free(match_data)
+      match
+    end
+  end
+
+  class Match
+    property value : Bytes
+    property start : UInt64
+    property size : UInt64
+
+    def initialize(@value : Bytes, @start : UInt64, @size : UInt64)
+    end
+  end
+end
+
+# pattern = "foo"
+# str = "foo bar"
+# re = BytesRegex::Regex.new(pattern)
+# p! String.new(re.match(str.to_slice)[0].value)

src/formatter.cr

@@ -9,12 +9,15 @@ module Tartrazine
   # This is the base class for all formatters.
   abstract class Formatter
     property name : String = ""
+    property theme : Theme = Tartrazine.theme("default-dark")
 
-    def format(text : String, lexer : Lexer, theme : Theme) : String
+    # Format the text using the given lexer.
+    def format(text : String, lexer : Lexer) : String
       raise Exception.new("Not implemented")
     end
 
-    def get_style_defs(theme : Theme) : String
+    # Return the styles, if the formatter supports it.
+    def style_defs : String
       raise Exception.new("Not implemented")
     end
   end

src/formatters/ansi.cr

@@ -4,20 +4,23 @@ module Tartrazine
   class Ansi < Formatter
     property? line_numbers : Bool = false
 
-    def format(text : String, lexer : Lexer, theme : Theme) : String
+    def initialize(@theme : Theme = Tartrazine.theme("default-dark"), @line_numbers : Bool = false)
+    end
+
+    def format(text : String, lexer : Lexer) : String
       output = String.build do |outp|
         lexer.group_tokens_in_lines(lexer.tokenize(text)).each_with_index do |line, i|
           label = line_numbers? ? "#{i + 1}".rjust(4).ljust(5) : ""
           outp << label
           line.each do |token|
-            outp << colorize(token[:value], token[:type], theme)
+            outp << colorize(token[:value], token[:type])
           end
         end
       end
       output
     end
 
-    def colorize(text : String, token : String, theme : Theme) : String
+    def colorize(text : String, token : String) : String
       style = theme.styles.fetch(token, nil)
       return text if style.nil?
       if theme.styles.has_key?(token)

src/formatters/html.cr

@@ -15,20 +15,37 @@ module Tartrazine
     property? standalone : Bool = false
     property? surrounding_pre : Bool = true
     property? wrap_long_lines : Bool = false
+    property weight_of_bold : Int32 = 600
 
-    def format(text : String, lexer : Lexer, theme : Theme) : String
-      text = format_text(text, lexer, theme)
+    property theme : Theme
+
+    def initialize(@theme : Theme = Tartrazine.theme("default-dark"), *,
+                   @highlight_lines = [] of Range(Int32, Int32),
+                   @class_prefix : String = "",
+                   @line_number_id_prefix = "line-",
+                   @line_number_start = 1,
+                   @tab_width = 8,
+                   @line_numbers : Bool = false,
+                   @linkable_line_numbers : Bool = true,
+                   @standalone : Bool = false,
+                   @surrounding_pre : Bool = true,
+                   @wrap_long_lines : Bool = false,
+                   @weight_of_bold : Int32 = 600)
+    end
+
+    def format(text : String, lexer : Lexer) : String
+      text = format_text(text, lexer)
       if standalone?
-        text = wrap_standalone(text, theme)
+        text = wrap_standalone(text)
       end
       text
     end
 
     # Wrap text into a full HTML document, including the CSS for the theme
-    def wrap_standalone(text, theme) : String
+    def wrap_standalone(text) : String
       output = String.build do |outp|
         outp << "<!DOCTYPE html><html><head><style>"
-        outp << get_style_defs(theme)
+        outp << style_defs
         outp << "</style></head><body>"
         outp << text
         outp << "</body></html>"
@@ -36,21 +53,21 @@ module Tartrazine
       output
     end
 
-    def format_text(text : String, lexer : Lexer, theme : Theme) : String
+    def format_text(text : String, lexer : Lexer) : String
       lines = lexer.group_tokens_in_lines(lexer.tokenize(text))
       output = String.build do |outp|
         if surrounding_pre?
           pre_style = wrap_long_lines? ? "style=\"white-space: pre-wrap; word-break: break-word;\"" : ""
-          outp << "<pre class=\"#{get_css_class("Background", theme)}\" #{pre_style}>"
+          outp << "<pre class=\"#{get_css_class("Background")}\" #{pre_style}>"
         end
-        "<code class=\"#{get_css_class("Background", theme)}\">"
+        outp << "<code class=\"#{get_css_class("Background")}\">"
         lines.each_with_index(offset: line_number_start - 1) do |line, i|
           line_label = line_numbers? ? "#{i + 1}".rjust(4).ljust(5) : ""
-          line_class = highlighted?(i + 1) ? "class=\"#{get_css_class("LineHighlight", theme)}\"" : ""
+          line_class = highlighted?(i + 1) ? "class=\"#{get_css_class("LineHighlight")}\"" : ""
           line_id = linkable_line_numbers? ? "id=\"#{line_number_id_prefix}#{i + 1}\"" : ""
           outp << "<span #{line_id} #{line_class} style=\"user-select: none;\">#{line_label} </span>"
           line.each do |token|
-            fragment = "<span class=\"#{get_css_class(token[:type], theme)}\">#{token[:value]}</span>"
+            fragment = "<span class=\"#{get_css_class(token[:type])}\">#{token[:value]}</span>"
             outp << fragment
           end
         end
@@ -60,10 +77,10 @@ module Tartrazine
     end
 
     # ameba:disable Metrics/CyclomaticComplexity
-    def get_style_defs(theme : Theme) : String
+    def style_defs : String
       output = String.build do |outp|
         theme.styles.each do |token, style|
-          outp << ".#{get_css_class(token, theme)} {"
+          outp << ".#{get_css_class(token)} {"
           # These are set or nil
           outp << "color: ##{style.color.try &.hex};" if style.color
           outp << "background-color: ##{style.background.try &.hex};" if style.background
@@ -72,7 +89,7 @@ module Tartrazine
           # These are true/false/nil
           outp << "border: none;" if style.border == false
           outp << "font-weight: bold;" if style.bold
-          outp << "font-weight: 400;" if style.bold == false
+          outp << "font-weight: #{@weight_of_bold};" if style.bold == false
           outp << "font-style: italic;" if style.italic
           outp << "font-style: normal;" if style.italic == false
           outp << "text-decoration: underline;" if style.underline
@@ -86,7 +103,7 @@ module Tartrazine
     end
 
     # Given a token type, return the CSS class to use.
-    def get_css_class(token, theme)
+    def get_css_class(token : String) : String
       return class_prefix + Abbreviations[token] if theme.styles.has_key?(token)
 
       # Themes don't contain information for each specific
@@ -98,6 +115,7 @@ module Tartrazine
       }]
     end
 
+    # Is this line in the highlighted ranges?
     def highlighted?(line : Int) : Bool
       highlight_lines.any?(&.includes?(line))
     end

src/lexer.cr

@@ -1,3 +1,4 @@
+require "baked_file_system"
 require "./constants/lexers"
 
 module Tartrazine
@@ -65,7 +66,7 @@ module Tartrazine
     # is true when the lexer is being used to tokenize a string
     # from a larger text that is already being tokenized.
     # So, when it's true, we don't modify the text.
-    def tokenize(text, usingself = false) : Array(Token)
+    def tokenize(text : String, usingself = false) : Array(Token)
       @state_stack = ["root"]
       tokens = [] of Token
       pos = 0
@@ -76,12 +77,13 @@ module Tartrazine
         text += "\n"
       end
 
+      text_bytes = text.to_slice
       # Loop through the text, applying rules
-      while pos < text.size
+      while pos < text_bytes.size
         state = states[@state_stack.last]
         # Log.trace { "Stack is #{@state_stack} State is #{state.name}, pos is #{pos}, text is #{text[pos..pos + 10]}" }
         state.rules.each do |rule|
-          matched, new_pos, new_tokens = rule.match(text, pos, self)
+          matched, new_pos, new_tokens = rule.match(text_bytes, pos, self)
           if matched
             # Move position forward, save the tokens,
             # tokenize from the new position
@@ -94,8 +96,13 @@ module Tartrazine
         end
         # If no rule matches, emit an error token
         unless matched
-          # Log.trace { "Error at #{pos}" }
-          tokens << {type: "Error", value: "#{text[pos]}"}
+          if text_bytes[pos] == 10u8
+            # at EOL, reset state to "root"
+            tokens << {type: "Text", value: "\n"}
+            @state_stack = ["root"]
+          else
+            tokens << {type: "Error", value: String.new(text_bytes[pos..pos])}
+          end
           pos += 1
         end
       end

src/main.cr

@@ -54,6 +54,8 @@ if options["--list-formatters"]
   exit 0
 end
 
+theme = Tartrazine.theme(options["-t"].as(String))
+
 if options["-f"]
   formatter = options["-f"].as(String)
   case formatter
@@ -61,9 +63,11 @@ if options["-f"]
     formatter = Tartrazine::Html.new
     formatter.standalone = options["--standalone"] != nil
     formatter.line_numbers = options["--line-numbers"] != nil
+    formatter.theme = theme
   when "terminal"
     formatter = Tartrazine::Ansi.new
     formatter.line_numbers = options["--line-numbers"] != nil
+    formatter.theme = theme
   when "json"
     formatter = Tartrazine::Json.new
   else
@@ -71,11 +75,9 @@ if options["-f"]
     exit 1
   end
 
-  theme = Tartrazine.theme(options["-t"].as(String))
-
   if formatter.is_a?(Tartrazine::Html) && options["--css"]
     File.open("#{options["-t"].as(String)}.css", "w") do |outf|
-      outf.puts formatter.get_style_defs(theme)
+      outf.puts formatter.style_defs
     end
     exit 0
   end
@@ -83,7 +85,7 @@ if options["-f"]
   lexer = Tartrazine.lexer(name: options["-l"].as(String), filename: options["FILE"].as(String))
 
   input = File.open(options["FILE"].as(String)).gets_to_end
-  output = formatter.format(input, lexer, theme)
+  output = formatter.format(input, lexer)
 
   if options["-o"].nil?
     puts output

src/rules.cr

@@ -1,8 +1,9 @@
 require "./actions"
+require "./bytes_regex"
 require "./formatter"
+require "./lexer"
 require "./rules"
 require "./styles"
-require "./lexer"
 
 # These are lexer rules. They match with the text being parsed
 # and perform actions, either emitting tokens or changing the
@@ -10,16 +11,21 @@ require "./lexer"
 module Tartrazine
   # This rule matches via a regex pattern
 
+  alias Regex = BytesRegex::Regex
+  alias Match = BytesRegex::Match
+  alias MatchData = Array(Match)
+
   class Rule
-    property pattern : Regex = Re2.new ""
+    property pattern : Regex = Regex.new ""
     property actions : Array(Action) = [] of Action
     property xml : String = "foo"
 
-    def match(text, pos, lexer) : Tuple(Bool, Int32, Array(Token))
+    def match(text : Bytes, pos, lexer) : Tuple(Bool, Int32, Array(Token))
       match = pattern.match(text, pos)
       # We don't match if the match doesn't move the cursor
       # because that causes infinite loops
-      return false, pos, [] of Token if match.nil? || match.end == 0
+      return false, pos, [] of Token if match.empty? || match[0].size == 0
+      # p! match, String.new(text[pos..pos+20])
       # Log.trace { "#{match}, #{pattern.inspect}, #{text}, #{pos}" }
       tokens = [] of Token
       # Emit the tokens
@@ -27,18 +33,21 @@ module Tartrazine
         # Emit the token
         tokens += action.emit(match, lexer)
       end
-      Log.trace { "#{xml}, #{match.end}, #{tokens}" }
-      return true, match.end, tokens
+      Log.trace { "#{xml}, #{pos + match[0].size}, #{tokens}" }
+      return true, pos + match[0].size, tokens
     end
 
     def initialize(node : XML::Node, multiline, dotall, ignorecase)
       @xml = node.to_s
-      @pattern = Re2.new(
-        node["pattern"],
-        multiline,
-        dotall,
-        ignorecase,
-        anchored: true)
+      pattern = node["pattern"]
+      # flags = Regex::Options::ANCHORED
+      # MULTILINE implies DOTALL which we don't want, so we
+      # use in-pattern flag (?m) instead
+      # flags |= Regex::Options::MULTILINE if multiline
+      pattern = "(?m)" + pattern if multiline
+      # flags |= Regex::Options::DOTALL if dotall
+      # flags |= Regex::Options::IGNORE_CASE if ignorecase
+      @pattern = Regex.new(pattern, multiline, dotall, ignorecase, true)
       add_actions(node)
     end
 
@@ -80,7 +89,7 @@ module Tartrazine
     def match(text, pos, lexer) : Tuple(Bool, Int32, Array(Token))
       tokens = [] of Token
       actions.each do |action|
-        tokens += action.emit(nil, lexer)
+        tokens += action.emit([] of Match, lexer)
       end
       return true, pos, tokens
     end
@@ -90,25 +99,4 @@ module Tartrazine
       add_actions(node)
     end
   end
-
-  # This is a hack to workaround that Crystal seems to disallow
-  # having regexes multiline but not dot_all
-  class Re2 < Regex
-    @source = "fa"
-    @options = Regex::Options::None
-    @jit = true
-
-    def initialize(pattern : String, multiline = false, dotall = false, ignorecase = false, anchored = false)
-      flags = LibPCRE2::UTF | LibPCRE2::DUPNAMES |
-              LibPCRE2::UCP
-      flags |= LibPCRE2::MULTILINE if multiline
-      flags |= LibPCRE2::DOTALL if dotall
-      flags |= LibPCRE2::CASELESS if ignorecase
-      flags |= LibPCRE2::ANCHORED if anchored
-      flags |= LibPCRE2::NO_UTF_CHECK
-      @re = Regex::PCRE2.compile(pattern, flags) do |error_message|
-        raise Exception.new(error_message)
-      end
-    end
-  end
 end

src/tartrazine.cr

@@ -11,7 +11,7 @@ require "xml"
 
 module Tartrazine
   extend self
-  VERSION = "0.2.0"
+  VERSION = {{ `shards version #{__DIR__}`.chomp.stringify }}
 
   Log = ::Log.for("tartrazine")
 end