chore: Add standard-version and changelog generator

.editorconfig

@@ -13,3 +13,7 @@ tab_width = 2
 [{*.rb,*.gemspec,Rakefile,Gemfile,Gemfile.lock}]
 indent_style = space
 tab_width = 2
+
+[*.js]
+indent_style = space
+tab_width = 2

.versionrc.js

@@ -0,0 +1,29 @@
+module.exports = {
+  tagPrefix: '',
+  infile: 'CHANGELOG.md',
+  preset: {
+    name: 'conventionalcommits'
+  },
+  bumpFiles: [
+    {
+      filename: 'lc-lib/core/version.go',
+      updater: 'contrib/version-updaters/version.go.js'
+    },
+    {
+      filename: 'ruby/log-courier/lib/log-courier/version.rb',
+      updater: 'contrib/version-updaters/version.rb.js'
+    },
+    {
+      filename: 'ruby/log-courier/log-courier.gemspec',
+      updater: 'contrib/version-updaters/gemspec.js'
+    },
+    {
+      filename: 'ruby/logstash-input-courier/logstash-input-courier.gemspec',
+      updater: 'contrib/version-updaters/gemspec.js'
+    },
+    {
+      filename: 'ruby/logstash-output-courier/logstash-output-courier.gemspec',
+      updater: 'contrib/version-updaters/gemspec.js'
+    }
+  ]
+};

commitlint.config.js

@@ -0,0 +1,16 @@
+module.exports = {
+  extends: ['@commitlint/config-conventional'],
+  rules: {
+    // Disable subject-case
+    'subject-case': [
+      0,
+      'never',
+      ['sentence-case', 'start-case', 'pascal-case', 'upper-case'],
+    ],
+    // Dependabot and others exceed body and body line length so just disable it
+    'body-max-length': [0, 'always', 100],
+    'body-max-line-length': [0, 'always', 100],
+    // Allow longer header length
+    'header-max-length': [2, 'always', 150]
+  }
+};

contrib/version-updaters/gemspec.js

@@ -0,0 +1,14 @@
+module.exports = {
+  readVersion(contents) {
+    const match = contents.match(/gem.version\s+= '([^']+)'/)
+    if (!match) {
+      throw new Error('Could not parse gemspec');
+    }
+    return match[1];
+  },
+  writeVersion(contents, version) {
+    return contents
+      .replace(/(gem.version\s+=) '[^']+'/, `$1 '${version}'`)
+      .replace(/(gem.add_runtime_dependency 'log-courier',) '= [^']+'/, `$1 '= ${version}'`);
+  }
+};

contrib/version-updaters/version.go.js

@@ -0,0 +1,17 @@
+module.exports = {
+  readVersion(contents) {
+    const match = contents.match(/LogCourierVersion string = "([^"]+)"/)
+    if (!match) {
+      throw new Error('Could not parse version.go');
+    }
+    return match[1];
+  },
+  writeVersion(contents, version) {
+    const [major, minor, patch] = version.split('.');
+    return contents
+      .replace(/(LogCourierMajorVersion uint32 =) \d+/, `$1 ${major}`)
+      .replace(/(LogCourierMinorVersion uint32 =) \d+/, `$1 ${minor}`)
+      .replace(/(LogCourierPatchVersion uint32 =) \d+/, `$1 ${patch}`)
+      .replace(/(LogCourierVersion string =) "[^"]+"/, `$1 "${version}"`);
+  }
+};

contrib/version-updaters/version.rb.js

@@ -0,0 +1,17 @@
+module.exports = {
+  readVersion(contents) {
+    const match = contents.match(/VERSION = '([^']+)'/)
+    if (!match) {
+      throw new Error('Could not parse version.rb');
+    }
+    return match[1];
+  },
+  writeVersion(contents, version) {
+    const [major, minor, patch] = version.split('.');
+    return contents
+      .replace(/(MAJOR_VERSION =) \d+/, `$1 ${major}`)
+      .replace(/(MINOR_VERSION =) \d+/, `$1 ${minor}`)
+      .replace(/(PATCH_VERSION =) \d+/, `$1 ${patch}`)
+      .replace(/(VERSION =) '[^']+'/, `$1 '${version}'`);
+  }
+};