[RELEASE] iText 7 Core - 7.1.8

https://github.com/itext/itext7-dotnet/releases/tag/7.1.8

* release/7.1.8:
  [RELEASE] 7.1.8-SNAPSHOT -> 7.1.8
  Add missing copyright headers
  Allow font cache to be cleared
  Implement new pattern color tests
  Extract PdfCanvasColorTest from PdfCanvasTest
  Refactor according to findbugs
  Update port-hash
  Update port-hash
  Update port-hash
  Update autoported files
  Add configuration file for doxygen tool
  Add autogenerated configuration file for doxygen tool
  Update autoported files
  Improve some links in javadocs.
  Update port-hash
  Remove commented-out lines making the Quality Gate fail
  Implement xfdf support
  Make PdfPolyGeomAnnotation abstract
  Mark redundant LayoutRect and X509ExtensionBase classes as deprecated
  Improve itextcore's javadocs.
  Update page boundary keys that are used for VIEW_CLIP, PRINT_AREA, PRINT_CLIP constants. Add some PdfViewerPreferences tests.
  Refactor implementation of building hyphenation trees to avoid StackOverflowErrors
  Replace Throwable with SecurityException in ResourceUtil
  Remove leftover test
  Fix javadocs in order in order to make them portable to C# code documentation
  Fix C# code documentation in manual files
  Replace http links in Nuspec file with https ones
  Update port-hash
  Rework isIgnoredClassOrPackage method
  Increase waiting in DataHandlerTest
  Add hyphenation result test, add todo remark
  Expose TypographyUtils#isPdfCalligraphAvailable()
  Do not recalculate table's minmax width once the table has been split.
  Change structural comparison instead of visual.
  Add some link tests.
  Update port-hash
  Review checked exceptions softening in layout module
  Fix PdfLayer#getIntents in case of multiple intents; add new PdfLayer tests
  Add missing copyright headers
  Cover layer related logic with tests.
  Remove p tags from tables
  Remove empty tag
  Fix Barcodes java docs
  Separate tiff images testing
  Improve Javadocs of io
  Add missing copyright headers
  Add unit tests for font characteristics classes
  Improve Javadocs of io and styled-xml-parser
  Move svg path converting tests
  Update javadoc in FontProgramFactory and PdfFontFactory
  Add integration tests for BackgroundImage
  Improve porting of a piece of documentation
  Cover solid, dashed and dotted lines with tests.
  Add logmessages into unit tests
  Add missing copyright headers
  Move JFreeSvg tests from FT repository
  Remove StringTokenizer#HasMoreElements() to avoid collision
  Remove unnecessary log message throw.
  Add new LogMessageConstant.
  Prevent TableRenderer's applyVerticalAlignment from throwing NPE.
  Improve Javadocs for some of the members of PdfFormField class
  Move pie chart test from FT repository
  Update port-hash
  Update port-hash
  Add missing copyright headers
  Add test that produces non-conforming PDF/A
  Add test that produces non-conforming PDF/A
  Update port-hash
  Fix javadoc warnings in kernel
  Use initial bytes to check if byte[] is WmfImage
  Move svg clipPath
  Improve detection of a character's location.
  Update port-hash
  Remove WrapToTest annotation check. Remove unused IsLookLikeTest method Update port-hash
  Move svg simple samples
  Improve documentation and fix a few Javadoc warnings
  Add slack notifications to #ci channel
  Move svg ignored tags tests
  Add Jenkinsfile
  Update port-hash
  Update svg and cmp files
  Move svg css style tests
  [RELEASE] 7.1.7-SNAPSHOT -> 7.1.8-SNAPSHOT
  Move svg elliptical arc
  Add missing copyright headers
  Move svg mask tests
  Update autoported files
  Move svg path converting tests
  Remove redundant TODO in PdfImageXObject#flush()
  Add missing copyright headers
  Move svg opacity tests
  Move svg text converting tests
  Add missing copyright headers
  Move svg basic elements tests
  Add missing copyright headers
  Move google chart tests
  Update autoporting utils: FormsExtensions and StringTokenizer

Author: iText-CI

Jenkinsfile

@@ -0,0 +1,182 @@
+#!/usr/bin/env groovy
+@Library('pipeline-library')_
+
+def schedule = env.BRANCH_NAME.contains('master') ? '@monthly' : env.BRANCH_NAME == 'develop' ? '@midnight' : ''
+
+pipeline {
+
+    agent { label 'windows' }
+
+    options {
+        ansiColor('xterm')
+        buildDiscarder(logRotator(artifactNumToKeepStr: '1'))
+        parallelsAlwaysFailFast()
+        retry(1)
+        skipStagesAfterUnstable()
+        timeout(time: 60, unit: 'MINUTES')
+        timestamps()
+    }
+
+    triggers {
+        cron(schedule)
+    }
+
+    stages {
+        stage('Clean workspace') {
+            options {
+                timeout(time: 5, unit: 'MINUTES')
+            }
+            steps {
+                cleanWs deleteDirs: true, patterns: [
+                    [pattern: 'packages', type: 'INCLUDE'],
+                    [pattern: 'global-packages', type: 'INCLUDE'],
+                    [pattern: 'tmp/NuGetScratch', type: 'INCLUDE'],
+                    [pattern: 'http-cache', type: 'INCLUDE'],
+                    [pattern: 'plugins-cache', type: 'INCLUDE'],
+                    [pattern: '**/obj', type: 'INCLUDE'],
+                    [pattern: '**/bin', type: 'INCLUDE']
+                ]
+            }
+        }
+        stage('Compile') {
+            options {
+                timeout(time: 20, unit: 'MINUTES')
+            }
+            steps {
+                withEnv(["NUGET_PACKAGES=${env.WORKSPACE}/global-packages", "temp=${env.WORKSPACE}/tmp/NuGetScratch", "NUGET_HTTP_CACHE_PATH=${env.WORKSPACE}/http-cache", "NUGET_PLUGINS_CACHE_PATH=${env.WORKSPACE}/plugins-cache", "gsExec=${gsExec}", "compareExec=${compareExec}"]) {
+                    bat "\"${env.NuGet}\" restore iTextCore.netstandard.sln"
+                    bat "dotnet restore iTextCore.netstandard.sln"
+                    bat "dotnet build iTextCore.netstandard.sln --configuration Release --source ${env.WORKSPACE}/packages"
+                    script {
+                         createPackAllFile(findFiles(glob: '**/*.nuspec'))
+                         load 'packAll.groovy'
+                    }
+                }
+            }
+        }
+        stage('Run Tests') {
+            options {
+                timeout(time: 60, unit: 'MINUTES')
+            }
+            steps {
+                withEnv(["NUGET_PACKAGES=${env.WORKSPACE}/global-packages", "temp=${env.WORKSPACE}/tmp/NuGetScratch", "NUGET_HTTP_CACHE_PATH=${env.WORKSPACE}/http-cache", "NUGET_PLUGINS_CACHE_PATH=${env.WORKSPACE}/plugins-cache", "gsExec=${gsExec}", "compareExec=${compareExec}"]) {
+                    script {
+                        createRunTestDllsFile(findFiles(glob: '**/itext.*.tests.dll'))
+                        load 'runTestDlls.groovy'
+                        createRunTestCsProjsFile(findFiles(glob: '**/itext.*.tests.netstandard.csproj'))
+                        load 'runTestCsProjs.groovy'
+                    }
+                }
+            }
+        }
+        stage('Artifactory Deploy') {
+            options {
+                timeout(time: 5, unit: 'MINUTES')
+            }
+            when {
+                anyOf {
+                    branch "master"
+                    branch "develop"
+                    branch "7.0"
+                    branch "7.0-master"
+                }
+            }
+            steps {
+                script {
+                    getAndConfigureJFrogCLI()
+                    findFiles(glob: '*.nupkg').each { item ->
+                        upload(item)
+                    }
+                }
+            }
+        }
+        stage('Archive Artifacts') {
+            options {
+                timeout(time: 5, unit: 'MINUTES')
+            }
+            steps {
+                archiveArtifacts allowEmptyArchive: true, artifacts: '*.nupkg'
+            }
+        }
+    }
+
+    post {
+        always {
+            echo 'One way or another, I have finished \uD83E\uDD16'
+        }
+        success {
+            echo 'I succeeeded! \u263A'
+            cleanWs deleteDirs: true
+        }
+        unstable {
+            echo 'I am unstable \uD83D\uDE2E'
+        }
+        failure {
+            echo 'I failed \uD83D\uDCA9'
+        }
+        changed {
+            echo 'Things were different before... \uD83E\uDD14'
+        }
+        fixed {
+            script {
+                if ((env.BRANCH_NAME == 'master') || (env.BRANCH_NAME == 'develop')) {
+                    slackNotifier("#ci", currentBuild.currentResult, "${env.BRANCH_NAME} - Back to normal")
+                }
+            }
+        }
+        regression {
+            script {
+                if ((env.BRANCH_NAME == 'master') || (env.BRANCH_NAME == 'develop')) {
+                    slackNotifier("#ci", currentBuild.currentResult, "${env.BRANCH_NAME} - First failure")
+                }
+            }
+        }
+    }
+
+}
+
+@NonCPS // has to be NonCPS or the build breaks on the call to .each
+def createPackAllFile(list) {
+    // creates file because the bat command brakes the loop
+    def cmd = ''
+    list.each { item ->
+        if (!item.path.contains("packages")) {
+            cmd = cmd + "bat '\"${env.NuGet.replace('\\','\\\\')}\" pack \"${item.path.replace('\\','\\\\')}\"'\n"
+        }
+    }
+    writeFile file: 'packAll.groovy', text: cmd
+}
+
+@NonCPS // has to be NonCPS or the build breaks on the call to .each
+def createRunTestDllsFile(list) {
+    // creates file because the bat command brakes the loop
+    def ws = "${env.WORKSPACE.replace('\\','\\\\')}"
+    def nunit = "${env.'Nunit3-console'.replace('\\','\\\\')}"
+    def cmd = ''
+    list.each { item ->
+        if (!item.path.contains("netcoreapp1.0") && !item.path.contains("obj")) {
+            cmd = cmd + "bat '\"${nunit}\" \"${ws}\\\\${item.path.replace('\\','\\\\')}\" --result=${item.name}-TestResult.xml'\n"
+        }
+    }
+    writeFile file: 'runTestDlls.groovy', text: cmd
+}
+
+@NonCPS // has to be NonCPS or the build breaks on the call to .each
+def createRunTestCsProjsFile(list) {
+    // creates file because the bat command brakes the loop
+    def ws = "${env.WORKSPACE.replace('\\','\\\\')}"
+    def cmd = ''
+    list.each { item ->
+        cmd = cmd + "bat 'dotnet test ${ws}\\\\${item.path.replace('\\','\\\\')} --framework netcoreapp1.0 --configuration Release --no-build --logger \"trx;LogFileName=results.trx\"'\n"
+    }
+    writeFile file: 'runTestCsProjs.groovy', text: cmd
+}
+
+@NonCPS
+def upload(item) {
+    def itemArray = (item =~ /(.*?)(\.[0-9]*\.[0-9]*\.[0-9]*(-SNAPSHOT)?\.nupkg)/)
+    def dir = itemArray[ 0 ][ 1 ]
+    sh "./jfrog rt u \"${item.path}\" nuget/${dir}/ --flat=false --build-name="${env.BRANCH_NAME}" --build-number=${env.BUILD_NUMBER}"
+}
+
+