Copy from rangu

README.md

@@ -1,2 +1,37 @@
-# Pangu.cr
-Paranoid text spacing in Crystal
+# pangu
+
+Paranoid text spacing for good readability, to automatically insert whitespace between CJK (Chinese, Japanese, Korean) and half-width characters (alphabetical letters, numerical digits and symbols).
+
+This is the Crystal copy version from [bugtender/rangu](https://github.com/bugtender/rangu).
+
+## Installation
+
+Add the dependency to your `shard.yml`:
+
+```yaml
+dependencies:
+  pangu:
+    github: isaced/pangu.cr
+```
+
+Run `shards install`
+
+## Usage
+
+```crystal
+require "pangu"
+
+Pangu.spacing("當你凝視著bug，bug也凝視著你")
+=> "當你凝視著 bug，bug 也凝視著你"
+
+Pangu.spacing("path/to/file.txt")
+=> "與 PM 戰鬥的人，應當小心自己不要成為 PM"
+```
+
+## Contributing
+
+1. Fork it (<https://github.com/isaced/pangu.cr/fork>)
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create a new Pull Request

shard.yml

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+name: pangu
+version: 0.1.0
+
+authors:
+  - isaced <isaced@163.com>
+
+crystal: 0.27.2
+
+license: MIT

spec/pangu_spec.cr

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+require "./spec_helper"
+
+describe Pangu do
+  it "略過 _ 符號" do
+    Pangu.spacing("前面_後面").should eq "前面_後面"
+    Pangu.spacing("前面 _ 後面").should eq "前面 _ 後面"
+    Pangu.spacing("Vinta_Mollie").should eq "Vinta_Mollie"
+    Pangu.spacing("Vinta _ Mollie").should eq "Vinta _ Mollie"
+  end
+
+  it "處理 Alphabets" do
+    Pangu.spacing("中文abc").should eq "中文 abc"
+    Pangu.spacing("中文abc").should eq "中文 abc"
+  end
+
+  it "處理 Numbers" do
+    Pangu.spacing("中文123").should eq "中文 123"
+    Pangu.spacing("123中文").should eq "123 中文"
+  end
+
+  # https://unicode-table.com/en/blocks/latin-1-supplement/
+  it "處理 Latin-1 Supplement" do
+    Pangu.spacing("中文Ø漢字").should eq "中文 Ø 漢字"
+    Pangu.spacing("中文 Ø 漢字").should eq "中文 Ø 漢字"
+  end
+
+  # // https://unicode-table.com/en/blocks/greek-coptic/
+  it "處理 Greek and Coptic" do
+    Pangu.spacing("中文β漢字").should eq "中文 β 漢字"
+    Pangu.spacing("中文 β 漢字").should eq "中文 β 漢字"
+    Pangu.spacing("我是α，我是Ω").should eq "我是 α，我是 Ω"
+  end
+end

spec/spec_helper.cr

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+require "spec"
+require "../src/pangu"

src/pangu.cr

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+#
+# Paranoid text spacing for good readability, to automatically insert whitespace between CJK (Chinese, Japanese, Korean) and half-width characters (alphabetical letters, numerical digits and symbols).
+#
+# ```crystal
+# require "pangu"
+#
+# Pangu.spacing("當你凝視著bug，bug也凝視著你")
+# => "當你凝視著 bug，bug 也凝視著你"
+#
+# Pangu.spacing("path/to/file.txt")
+# => "與 PM 戰鬥的人，應當小心自己不要成為 PM"
+# ```
+#
+module Pangu
+  VERSION = "0.1.0"
+
+  CJK_QUOTE = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])(["\'])/i
+  QUOTE_CJK = /(["\'])([\x{3040}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])/i
+
+  FIX_QUOTE        = /(["\'\(\[\{<\x{201c}]+)(\s*)(.+?)(\s*)(["\'\)\]\}>\x{201d}]+)/i
+  FIX_SINGLE_QUOTE = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])( )(\')([A-Za-zΑ-Ωα-ω])/i
+
+  CJK_HASH = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])(#(\S+))/i
+  HASH_CJK = /((\S+)#)([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])/i
+
+  CJK_OPERATOR_ANS = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])([\+\-\*\/=&\\|<>])([A-Za-zΑ-Ωα-ω0-9])/i
+  ANS_OPERATOR_CJK = /([A-Za-zΑ-Ωα-ω0-9])([\+\-\*\/=&\\|<>])([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])/i
+
+  CJK_BRACKET_CJK = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])([\(\[\{<\x{201c}]+(.*?)[\)\]\}>\x{201d}]+)([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])/i
+  CJK_BRACKET     = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])([\(\[\{<\x{201c}>])/i
+  BRACKET_CJK     = /([\)\]\}>\x{201d}<])([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])/i
+  FIX_BRACKET     = /([\(\[\{<\x{201c}]+)(\s*)(.+?)(\s*)([\)\]\}>\x{201d}]+)/i
+
+  FIX_SYMBOL = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])([~!;:,\.\?\x{2026}])([A-Za-zΑ-Ωα-ω0-9])/i
+
+  CJK_ANS = /([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])([A-Za-zΑ-Ωα-ω0-9`\$%\^&\*\-=\+\\\|\/@\x{00a1}-\x{00ff}\x{2022}\x{2027}\x{2150}-\x{218f}])/i
+  ANS_CJK = /([A-Za-zΑ-Ωα-ω0-9`~\$%\^&\*\-=\+\\\|\/!;:,\.\?\x{00a1}-\x{00ff}\x{2022}\x{2026}\x{2027}\x{2150}-\x{218f}])([\x{2e80}-\x{2eff}\x{2f00}-\x{2fdf}\x{3040}-\x{309f}\x{30a0}-\x{30ff}\x{3100}-\x{312f}\x{3200}-\x{32ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}])/i
+
+  def self.spacing_text(text : String)
+    text = text.gsub(CJK_QUOTE, "\\1 \\2")
+    text = text.gsub(QUOTE_CJK, "\\1 \\2")
+
+    text = text.gsub(FIX_QUOTE, "\\1\\3\\5")
+    text = text.gsub(FIX_SINGLE_QUOTE, "\\1\\3\\4")
+
+    text = text.gsub(CJK_HASH, "\\1 \\2")
+    text = text.gsub(HASH_CJK, "\\1 \\3")
+
+    text = text.gsub(CJK_OPERATOR_ANS, "\\1 \\2 \\3")
+    text = text.gsub(ANS_OPERATOR_CJK, "\\1 \\2 \\3")
+
+    old_text = text
+    text = text.gsub(CJK_BRACKET_CJK, "\\1 \\2 \\4")
+    if old_text == text
+      text = text.gsub(CJK_BRACKET, "\\1 \\2")
+      text = text.gsub(BRACKET_CJK, "\\1 \\2")
+    end
+    text = text.gsub(FIX_BRACKET, "\\1\\3\\5")
+
+    text = text.gsub(FIX_SYMBOL, "\\1\\2 \\3")
+
+    text = text.gsub(CJK_ANS, "\\1 \\2")
+    text = text.gsub(ANS_CJK, "\\1 \\2")
+    text
+  end
+
+  def self.spacing_file(path)
+    file = File.open(path, "r")
+    data = file.gets_to_end
+    file.close
+    spacing_text(data)
+  end
+
+  def self.spacing(text_or_path)
+    if File.file?(text_or_path)
+      spacing_file(text_or_path)
+    else
+      spacing_text(text_or_path)
+    end
+  end
+end