[MNT-23960] Added new options (pdfFont, pdfFontSize) to textToPdf transformer (#885)

* [MNT-23960] Added options (pdfFont, pdfFontSize) and NotoSans fonts to textToPdf transformer

* [MNT-23960] Added 'MISC_PDFBOX_DEFAULT_FONT' and 'transform.core.misc.pdfbox.defaultFont' configuration to core-aio and misc T-Engines

* [MNT-23960] Added NotoSans fonts to core-aio and misc T-Engine images

* [MNT-23960] Improved logging: added messages, using placeholders

* [MNT-23960] Added DEFAULT_FONT constant (NotoSans-Regular)

* [MNT-23960] Splitted getFont(PDDocument, String) code into 3 methods. Added Javadoc.

* [MNT-23960] Return TransformCheckResult on transformTextAndCheck methods. Added assertion to testUTF8WithBOM test.

docs/external-engine-configuration.md

@@ -39,6 +39,7 @@ The following externalized T-engines properties are available:
 | ACTIVEMQ_PASSWORD | ActiveMQ Password. | admin |
 | FILE_STORE_URL | T-Engine Port. | http://localhost:8099/alfresco/api/-default-/private/sfs/versions/1/file |
 | TRANSFORM_ENGINE_REQUEST_QUEUE | T-Engine queue used for async requests. | org.alfresco.transform.engine.misc.acs |
+| MISC_PDFBOX_DEFAULT_FONT | Default font used by PdfBox | NotoSans-Regular |
 
 ## Libreoffice
 | Property | Description | Default value |
@@ -96,4 +97,5 @@ The following externalized T-engines properties are available:
 | IMAGEMAGICK_DYN | Path to Imagemagick DYLD. | /usr/lib64/ImageMagick-7.0.10/lib |
 | IMAGEMAGICK_EXE | Path to Imagemagick EXE. | /usr/bin/convert |
 | IMAGEMAGICK_CODERS | Path to Imagemagick custom coders. |  |
-| IMAGEMAGICK_CONFIG | Path to Imagemagick custom config. |  |
+| IMAGEMAGICK_CONFIG | Path to Imagemagick custom config. |  |
+| MISC_PDFBOX_DEFAULT_FONT | Default font used by PdfBox | NotoSans-Regular |

engines/aio/Dockerfile

@@ -76,6 +76,7 @@ ADD target/generated-resources/licenses              /licenses
 ADD target/generated-resources/licenses.xml          /licenses/
 ADD target/generated-sources/license/THIRD-PARTY.txt /licenses/
 COPY target/classes/licenses/3rd-party/ /
+COPY target/classes/fonts/NotoSans /usr/local/share/fonts/NotoSans
 
 RUN groupadd -g ${GROUPID} ${GROUPNAME} && \
     useradd -u ${USERID} -G ${GROUPNAME} ${AIOUSERNAME} && \

engines/aio/src/main/resources/application-default.yaml

@@ -24,3 +24,6 @@ transform:
         exifTool:
           windowsOS: 'exiftool -args -G1 -sep "|||" #{"$"}{INPUT}'
           unixOS: 'env FOO=#{"$"}{OUTPUT} exiftool -args -G1 -sep "|||" #{"$"}{INPUT}'
+    misc:
+        pdfBox:
+          defaultFont: ${MISC_PDFBOX_DEFAULT_FONT:NotoSans-Regular}

engines/aio/src/test/java/org/alfresco/transform/aio/AIOTikaTest.java

@@ -71,7 +71,9 @@ public class AIOTikaTest extends TikaTest
                 "startPage",
                 "targetEncoding",
                 "thumbnail",
-                "width"
+                "width",
+                "pdfFont",
+                "pdfFontSize"
             ),
             getOptionNames(controller.transformConfig(0).getBody().getTransformOptions()));
     }

engines/misc/Dockerfile

@@ -19,6 +19,7 @@ ADD target/generated-resources/licenses              /licenses
 ADD target/generated-resources/licenses.xml          /licenses/
 ADD target/generated-sources/license/THIRD-PARTY.txt /licenses/
 COPY target/classes/licenses/3rd-party/ /
+COPY target/classes/fonts/NotoSans /usr/local/share/fonts/NotoSans
 
 RUN groupadd -g ${GROUPID} ${GROUPNAME} && \
     useradd -u ${USERID} -G ${GROUPNAME} ${MISCUSERNAME} && \

engines/misc/LICENSES.md

@@ -7,3 +7,4 @@
 * commons-compress, PDFBox and poi-ooxml are from Apache. See the license at http://www.apache.org/licenses/LICENSE-2.0 or the
   [Apache 2.0.txt](src/main/resources/licenses/3rd-party/Apache%202.0.txt)
   file placed in the root directory of the docker image.
+* NotoSans https://openfontlicense.org/open-font-license-official-text/

engines/misc/src/main/java/org/alfresco/transform/misc/transformers/TextToPdfContentTransformer.java

@@ -26,16 +26,10 @@
  */
 package org.alfresco.transform.misc.transformers;
 
-import org.alfresco.transform.base.TransformManager;
+import static org.alfresco.transform.common.RequestParamMap.PAGE_LIMIT;
-import org.alfresco.transform.base.util.CustomTransformerFileAdaptor;
+import static org.alfresco.transform.common.RequestParamMap.PDF_FONT;
-import org.apache.pdfbox.pdmodel.PDDocument;
+import static org.alfresco.transform.common.RequestParamMap.PDF_FONT_SIZE;
-import org.apache.pdfbox.pdmodel.PDPage;
+import static org.alfresco.transform.common.RequestParamMap.SOURCE_ENCODING;
-import org.apache.pdfbox.pdmodel.PDPageContentStream;
-import org.apache.pdfbox.pdmodel.font.PDType1Font;
-import org.apache.pdfbox.tools.TextToPDF;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
 
 import java.io.BufferedOutputStream;
 import java.io.BufferedReader;
@@ -48,12 +42,31 @@ import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.PushbackInputStream;
 import java.io.Reader;
+import java.net.URI;
 import java.nio.charset.Charset;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
-import static org.alfresco.transform.common.RequestParamMap.PAGE_LIMIT;
+import org.alfresco.transform.base.TransformManager;
-import static org.alfresco.transform.common.RequestParamMap.SOURCE_ENCODING;
+import org.alfresco.transform.base.util.CustomTransformerFileAdaptor;
+import org.apache.fontbox.ttf.TrueTypeFont;
+import org.apache.fontbox.util.autodetect.FontFileFinder;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.font.FontMappers;
+import org.apache.pdfbox.pdmodel.font.FontMapping;
+import org.apache.pdfbox.pdmodel.font.PDFont;
+import org.apache.pdfbox.pdmodel.font.PDType0Font;
+import org.apache.pdfbox.pdmodel.font.PDType1Font;
+import org.apache.pdfbox.tools.TextToPDF;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import jakarta.annotation.PostConstruct;
 
 /**
  * <p>
@@ -77,20 +90,30 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
     private static final byte EF = (byte) 0xEF;
     private static final byte BB = (byte) 0xBB;
     private static final byte BF = (byte) 0xBF;
-
+    private static final String DEFAULT_FONT = "NotoSans-Regular";
+    private static final int DEFAULT_FONT_SIZE = 10;
 
     private final PagedTextToPDF transformer;
 
+    @Value("${transform.core.misc.pdfBox.defaultFont:NotoSans-Regular}")
+    private String pdfBoxDefaultFont;
+
     public TextToPdfContentTransformer()
     {
         transformer = new PagedTextToPDF();
     }
 
+    @PostConstruct
+    public void init()
+    {
+        transformer.setDefaultFont(pdfBoxDefaultFont);
+    }
+
     public void setStandardFont(String fontName)
     {
         try
         {
-            transformer.setFont(PagedTextToPDF.getStandardFont(fontName));
+            transformer.setFont(fontName);
         }
         catch (Throwable e)
         {
@@ -112,6 +135,11 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
         }
     }
 
+    public String getUsedFont()
+    {
+        return transformer.getFontName();
+    }
+
     @Override
     public String getTransformerName()
     {
@@ -130,6 +158,25 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
         {
             pageLimit = parseInt(stringPageLimit, PAGE_LIMIT);
         }
+        String pdfFont = transformOptions.get(PDF_FONT);
+        if (pdfFont == null || pdfFont.isBlank())
+        {
+            pdfFont = pdfBoxDefaultFont;
+        }
+        String pdfFontSize = transformOptions.get(PDF_FONT_SIZE);
+        Integer fontSize = null;
+        if (pdfFontSize != null && !pdfFontSize.isBlank())
+        {
+            try
+            {
+                fontSize = parseInt(pdfFontSize, PDF_FONT_SIZE);
+            }
+            catch (Exception e)
+            {
+                fontSize = DEFAULT_FONT_SIZE;
+                logger.error("Error parsing font size {}, going to set it as {}", pdfFontSize, fontSize, e);
+            }
+        }
 
         PDDocument pdf = null;
         try (InputStream is = new FileInputStream(sourceFile);
@@ -138,7 +185,7 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
         {
             //TransformationOptionLimits limits = getLimits(reader, writer, options);
             //TransformationOptionPair pageLimits = limits.getPagesPair();
-            pdf = transformer.createPDFFromText(ir, pageLimit);
+            pdf = transformer.createPDFFromText(ir, pageLimit, pdfFont, fontSize);
             pdf.save(os);
         }
         finally
@@ -231,22 +278,34 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
         }
         //duplicating until here
 
+        private String fontName = null;
+        private String defaultFont = null;
+
         // The following code is based on the code in TextToPDF with the addition of
         // checks for page limits.
         // The calling code must close the PDDocument once finished with it.
-        public PDDocument createPDFFromText(Reader text, int pageLimit)
+        public PDDocument createPDFFromText(Reader text, int pageLimit, String pdfFontName, Integer pdfFontSize)
             throws IOException
         {
             PDDocument doc = null;
             int pageCount = 0;
             try
             {
+                doc = new PDDocument();
+
+                final PDFont font = getFont(doc, pdfFontName);
+                final int fontSize = pdfFontSize != null ? pdfFontSize : getFontSize();
+
+                fontName = font.getName();
+
+                logger.debug("Going to use font {} with size {}", fontName, fontSize);
+
                 final int margin = 40;
-                float height = getFont().getFontDescriptor().getFontBoundingBox().getHeight() / 1000;
+                float height = font.getFontDescriptor().getFontBoundingBox().getHeight() / 1000;
 
                 //calculate font height and increase by 5 percent.
-                height = height * getFontSize() * 1.05f;
+                height = height * fontSize * 1.05f;
-                doc = new PDDocument();
+
                 BufferedReader data = (text instanceof BufferedReader) ? (BufferedReader) text : new BufferedReader(text);
                 String nextLine;
                 PDPage page = new PDPage();
@@ -280,8 +339,8 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
                             {
                                 String lineWithNextWord = nextLineToDraw.toString() + lineWords[lineIndex];
                                 lengthIfUsingNextWord =
-                                    (getFont().getStringWidth(
+                                    (font.getStringWidth(
-                                        lineWithNextWord) / 1000) * getFontSize();
+                                        lineWithNextWord) / 1000) * fontSize;
                             }
                         }
                         while (lineIndex < lineWords.length &&
@@ -304,7 +363,7 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
                                 contentStream.close();
                             }
                             contentStream = new PDPageContentStream(doc, page);
-                            contentStream.setFont(getFont(), getFontSize());
+                            contentStream.setFont(font, fontSize);
                             contentStream.beginText();
                             y = page.getMediaBox().getHeight() - margin + height;
                             contentStream.moveTextPositionByAmount(margin, y);
@@ -344,6 +403,199 @@ public class TextToPdfContentTransformer implements CustomTransformerFileAdaptor
             }
             return doc;
         }
+
+        public void setFont(String aFontName)
+        {
+            PDType1Font font = PagedTextToPDF.getStandardFont(aFontName);
+
+            if (font != null)
+            {
+                super.setFont(font);
+                this.fontName = aFontName;
+            }
+        }
+
+        /**
+         * Gets the font that will be used in document transformation using the following approaches:
+         * <ol>
+         *     <li>Standard font map
+         *     <li>Font Mappers
+         *     <li>File system fonts
+         *     <li>Transformer default font
+         *     <li>PdfBox default font
+         * </ol>
+         *
+         * @param doc
+         *            the document that will be transformed
+         * @param fontName
+         *            the font name that will be used in transformation
+         *
+         * @return the font that was found
+         */
+        private PDFont getFont(PDDocument doc, String fontName)
+        {
+            if (fontName == null)
+            {
+                fontName = fontName != null ? fontName : getDefaultFont();
+            }
+
+            // First, it tries to get the font from PdfBox STANDARD_14 map
+            PDFont font = getFromStandardFonts(fontName);
+
+            // If not found, tries to get the font from FontMappers
+            if (font == null)
+            {
+                font = getFromFontMapper(fontName, doc);
+
+                // If still not found, tries to get the font from file system
+                if (font == null)
+                {
+                    font = getFromFileSystem(fontName);
+
+                    // If font is still null:
+                    // - it will recursively get the transformer default font
+                    // - Otherwise, it will use the PdfBox default font (Helvetica)
+                    if (font == null)
+                    {
+                        if (defaultFont != null && !fontName.equals(defaultFont))
+                        {
+                            font = getFont(doc, defaultFont);
+                        }
+                        else
+                        {
+                            font = getFont();
+                        }
+                    }
+                }
+
+            }
+
+            return font;
+        }
+
+        /**
+         * Gets the font from PdfBox standard fonts map
+         *
+         * @param fontName
+         *            the font name to obtain
+         *
+         * @return the font object that has been found, otherwise null
+         */
+        private PDFont getFromStandardFonts(String fontName)
+        {
+            return PagedTextToPDF.getStandardFont(fontName);
+        }
+
+        /**
+         * Gets the font from {@link FontMappers} instance
+         *
+         * @param fontName
+         *            the font name to obtain
+         * @param doc
+         *            the PDF document
+         *
+         * @return the font object that has been found, otherwise null
+         */
+        private PDFont getFromFontMapper(String fontName, PDDocument doc)
+        {
+            PDFont font = null;
+            FontMapping<TrueTypeFont> mapping = FontMappers.instance().getTrueTypeFont(fontName, null);
+
+            if (mapping != null && mapping.getFont() != null && !mapping.isFallback())
+            {
+                try
+                {
+                    font = PDType0Font.load(doc, mapping.getFont().getOriginalData());
+                }
+                catch (Exception e)
+                {
+                    logger.error("Error loading font mapping {}", fontName, e);
+                }
+            }
+
+            return font;
+        }
+
+        /**
+         * Gets the font from existing file system fonts
+         *
+         * @param fontName
+         *            the font name to obtain
+         * @return the font object that has been found, otherwise null
+         */
+        private PDFont getFromFileSystem(String fontName)
+        {
+            PDFont font = null;
+            String nameWithExtension = fontName + ".ttf";
+
+            FontFileFinder fontFileFinder = new FontFileFinder();
+            List<URI> uris = fontFileFinder.find();
+
+            for (URI uri : uris)
+            {
+                if (uri.getPath().contains(nameWithExtension))
+                {
+                    InputStream fontIS = null;
+                    try
+                    {
+                        fontIS = new FileInputStream(new File(uri));
+                        if (null != fontIS)
+                        {
+                            PDDocument documentMock = new PDDocument();
+                            font = PDType0Font.load(documentMock, fontIS);
+                            break;
+                        }
+                    }
+                    catch (IOException ioe)
+                    {
+                        logger.error("Error loading font {} from filesystem", fontName, ioe);
+                    }
+                    finally
+                    {
+                        if (fontIS != null)
+                        {
+                            try
+                            {
+                                fontIS.close();
+                            }
+                            catch (Exception e)
+                            {
+                                logger.error("Error closing font inputstream", e);
+                            }
+                        }
+                    }
+                }
+            }
+
+            return font;
+        }
+
+        public String getFontName()
+        {
+            return this.fontName;
+        }
+
+        public String getDefaultFont()
+        {
+            if (defaultFont == null || defaultFont.isBlank())
+            {
+                return TextToPdfContentTransformer.DEFAULT_FONT;
+            }
+
+            return defaultFont;
+        }
+
+        public void setDefaultFont(String name)
+        {
+            if (name == null || name.isBlank())
+            {
+                defaultFont = TextToPdfContentTransformer.DEFAULT_FONT;
+            }
+            else
+            {
+                this.defaultFont = name;
+            }
+        }
     }
 
     private int parseInt(String s, String paramName)

engines/misc/src/main/resources/application-default.yaml

@@ -1,2 +1,7 @@
 queue:
   engineRequestQueue: ${TRANSFORM_ENGINE_REQUEST_QUEUE:org.alfresco.transform.engine.misc.acs}
+transform:
+  core:
+    misc:
+      pdfBox:
+        defaultFont: ${MISC_PDFBOX_DEFAULT_FONT:NotoSans-Regular}

engines/misc/src/main/resources/licenses/3rd-party/OFL.txt

@@ -0,0 +1,93 @@
+Copyright 2022 The Noto Project Authors (https://github.com/notofonts/latin-greek-cyrillic)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+https://openfontlicense.org
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

engines/misc/src/main/resources/misc_engine_config.json

@@ -1,7 +1,9 @@
 {
   "transformOptions": {
     "textToPdfOptions": [
-      {"value": {"name": "pageLimit"}}
+      {"value": {"name": "pageLimit"}},
+      {"value": {"name": "pdfFont"}},
+      {"value": {"name": "pdfFontSize"}}
     ],
     "stringOptions": [
        {"value": {"name": "targetEncoding"}}

engines/misc/src/test/java/org/alfresco/transform/misc/transformers/TextToPdfContentTransformerTest.java

@@ -26,10 +26,14 @@
  */
 package org.alfresco.transform.misc.transformers;
 
-import org.apache.pdfbox.pdmodel.PDDocument;
+import static org.alfresco.transform.common.RequestParamMap.PAGE_LIMIT;
-import org.apache.pdfbox.text.PDFTextStripper;
+import static org.alfresco.transform.common.RequestParamMap.PDF_FONT;
-import org.junit.jupiter.api.BeforeEach;
+import static org.alfresco.transform.common.RequestParamMap.PDF_FONT_SIZE;
-import org.junit.jupiter.api.Test;
+import static org.alfresco.transform.common.RequestParamMap.SOURCE_ENCODING;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
@@ -43,14 +47,19 @@ import java.io.StringWriter;
 import java.util.HashMap;
 import java.util.Map;
 
-import static org.alfresco.transform.common.RequestParamMap.PAGE_LIMIT;
+import org.apache.pdfbox.pdmodel.PDDocument;
-import static org.alfresco.transform.common.RequestParamMap.SOURCE_ENCODING;
+import org.apache.pdfbox.pdmodel.font.PDType1Font;
-import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.apache.pdfbox.text.PDFTextStripper;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;;
 
 public class TextToPdfContentTransformerTest
 {
     TextToPdfContentTransformer transformer = new TextToPdfContentTransformer();
 
+    private static final String TEXT_WITH_A_BREVE = "Gămbardella, Matthew, Corets, Evă";
+    private static final String TEXT_WITHOUT_A_BREVE = "Gambardella, Matthew, Corets, Eva";
+
     @BeforeEach
     public void setUp()
     {
@@ -137,7 +146,8 @@ public class TextToPdfContentTransformerTest
     @Test
     public void testUTF8WithBOM() throws Exception
     {
-        transformTextAndCheck("UTF-8", null, true, "ef bb bf 31 20 49 20 6d");
+        TransformCheckResult result = transformTextAndCheck("UTF-8", null, true, "ef bb bf 31 20 49 20 6d");
+        assertEquals(result.getUsedFont(), "Times-Roman");
     }
 
     @Test
@@ -146,6 +156,78 @@ public class TextToPdfContentTransformerTest
         transformTextAndCheck("UTF-8", null, false, "31 20 49 20 6d 75 73 74");
     }
 
+    /**
+     * Test if a different font can be chosen to perform the transformation
+     *
+     * @throws Exception
+     */
+    @Test
+    public void testMNT23960_TimesBold_WithoutBreve() throws Exception
+    {
+        File sourceFile = File.createTempFile("TMP_Times-Bold", ".txt");
+        String encoding = "UTF-8";
+
+        writeToFile(sourceFile, TEXT_WITHOUT_A_BREVE, encoding, null, null);
+
+        Map<String, String> parameters = new HashMap<>();
+        parameters.put(PDF_FONT, PDType1Font.TIMES_BOLD.getName());
+        parameters.put(PDF_FONT_SIZE, "30");
+
+        TransformCheckResult result = transformTextAndCheck(sourceFile, encoding, TEXT_WITHOUT_A_BREVE, String.valueOf(-1), true,
+                parameters, false);
+
+        assertEquals(result.getUsedFont(), PDType1Font.TIMES_BOLD.getName());
+        assertNull(result.getErrorMessage());
+    }
+
+    /**
+     * Test if the default font is used when the chosen one is not found
+     *
+     * @throws Exception
+     */
+    @Test
+    public void testMNT23960_InexistentFont_WithoutBreve() throws Exception
+    {
+        File sourceFile = File.createTempFile("TMP_MyDummyFont", ".txt");
+        String encoding = "UTF-8";
+
+        writeToFile(sourceFile, TEXT_WITHOUT_A_BREVE, encoding, null, null);
+
+        Map<String, String> parameters = new HashMap<>();
+        parameters.put(PDF_FONT, "MyDummyFont");
+
+        TransformCheckResult result = transformTextAndCheck(sourceFile, encoding, TEXT_WITHOUT_A_BREVE, String.valueOf(-1), true,
+                parameters, false);
+
+        assertEquals(result.getUsedFont(), PDType1Font.TIMES_ROMAN.getName());
+        assertNull(result.getErrorMessage());
+    }
+
+    /**
+     * Test if a different font can be chosen to perform the transformation with breve character. This test
+     * transformation should fail as Times-Bold font doesn't handle the breve character
+     *
+     * @throws Exception
+     */
+    @Test
+    public void testMNT23960_TimesBold_WithBreve() throws Exception
+    {
+        File sourceFile = File.createTempFile("TMP_Times-Bold", ".txt");
+        String encoding = "UTF-8";
+
+        writeToFile(sourceFile, TEXT_WITH_A_BREVE, encoding, null, null);
+
+        Map<String, String> parameters = new HashMap<>();
+        parameters.put(PDF_FONT, PDType1Font.TIMES_BOLD.getName());
+
+        TransformCheckResult result = transformTextAndCheck(sourceFile, encoding, TEXT_WITH_A_BREVE, String.valueOf(-1), true,
+                parameters, true);
+
+        assertEquals(result.getUsedFont(), PDType1Font.TIMES_BOLD.getName());
+        assertNotNull(result.getErrorMessage());
+        assertTrue(result.getErrorMessage().contains(PDType1Font.TIMES_BOLD.getName()));
+    }
+
     /**
      * @param encoding to be used to read the source file
      * @param bigEndian indicates that the file should contain big endian characters, so typically the first byte of
@@ -155,18 +237,18 @@ public class TextToPdfContentTransformerTest
      * @param expectedByteOrder The first few bytes of the source file so we can check the test data has been
      *                 correctly created.
      */
-    protected void transformTextAndCheck(String encoding, Boolean bigEndian, Boolean validBom,
+    protected TransformCheckResult transformTextAndCheck(String encoding, Boolean bigEndian, Boolean validBom,
                                          String expectedByteOrder) throws Exception
     {
-        transformTextAndCheckImpl(-1, encoding, bigEndian, validBom, expectedByteOrder);
+        return transformTextAndCheckImpl(-1, encoding, bigEndian, validBom, expectedByteOrder);
     }
 
-    protected void transformTextAndCheckPageLength(int pageLimit) throws Exception
+    protected TransformCheckResult transformTextAndCheckPageLength(int pageLimit) throws Exception
     {
-        transformTextAndCheckImpl(pageLimit, "UTF-8", null, null, null);
+        return transformTextAndCheckImpl(pageLimit, "UTF-8", null, null, null);
     }
 
-    private void transformTextAndCheckImpl(int pageLimit, String encoding, Boolean bigEndian, Boolean validBom,
+    private TransformCheckResult transformTextAndCheckImpl(int pageLimit, String encoding, Boolean bigEndian, Boolean validBom,
                                            String expectedByteOrder) throws Exception
     {
         StringBuilder sb = new StringBuilder();
@@ -177,7 +259,7 @@ public class TextToPdfContentTransformerTest
         writeToFile(sourceFile, text, encoding, bigEndian, validBom);
         checkFileBytes(sourceFile, expectedByteOrder);
 
-        transformTextAndCheck(sourceFile, encoding, checkText, String.valueOf(pageLimit));
+        return transformTextAndCheck(sourceFile, encoding, checkText, String.valueOf(pageLimit));
     }
 
     private String createTestText(int pageLimit, StringBuilder sb)
@@ -203,9 +285,17 @@ public class TextToPdfContentTransformerTest
         return checkText;
     }
 
-    private void transformTextAndCheck(File sourceFile, String encoding, String checkText,
+    private TransformCheckResult transformTextAndCheck(File sourceFile, String encoding, String checkText,
         String pageLimit) throws Exception
     {
+        return transformTextAndCheck(sourceFile, encoding, checkText, pageLimit, true, null, false);
+    }
+
+    private TransformCheckResult transformTextAndCheck(File sourceFile, String encoding, String checkText,
+        String pageLimit, boolean clean, Map<String, String> extraParameters, boolean shouldFail) throws Exception
+    {
+        TransformCheckResult result = new TransformCheckResult();
+
         // And a temp writer
         File targetFile = File.createTempFile("AlfrescoTestTarget_", ".pdf");
 
@@ -213,24 +303,47 @@ public class TextToPdfContentTransformerTest
         Map<String, String> parameters = new HashMap<>();
         parameters.put(PAGE_LIMIT, pageLimit);
         parameters.put(SOURCE_ENCODING, encoding);
-        transformer.transform("text/plain", "application/pdf", parameters, sourceFile, targetFile, null);
+        if (extraParameters != null)
+        {
+            parameters.putAll(extraParameters);
+        }
 
-        // Read back in the PDF and check it
+        boolean failed = false;
-        PDDocument doc = PDDocument.load(targetFile);
-        PDFTextStripper textStripper = new PDFTextStripper();
-        StringWriter textWriter = new StringWriter();
-        textStripper.writeText(doc, textWriter);
-        doc.close();
 
-        String roundTrip = clean(textWriter.toString());
+        try
+        {
+            transformer.transform("text/plain", "application/pdf", parameters, sourceFile, targetFile, null);
+        }
+        catch (Exception e)
+        {
+            failed = true;
+            result.setErrorMessage(e.getMessage());
+        }
 
-        assertEquals(
+        result.setUsedFont(transformer.getUsedFont());
-            checkText, roundTrip,
+
-            "Incorrect text in PDF when starting from text in " + encoding
+        if (!failed)
-        );
+        {
+            // Read back in the PDF and check it
+            PDDocument doc = PDDocument.load(targetFile);
+            PDFTextStripper textStripper = new PDFTextStripper();
+            StringWriter textWriter = new StringWriter();
+            textStripper.writeText(doc, textWriter);
+            doc.close();
+
+            String roundTrip = clean(textWriter.toString());
+
+            assertEquals(checkText, roundTrip, "Incorrect text in PDF when starting from text in " + encoding);
+        }
+        else
+        {
+            assertTrue(shouldFail && failed);
+        }
 
         sourceFile.delete();
         targetFile.delete();
+
+        return result;
     }
 
     private String clean(String text)
@@ -367,4 +480,30 @@ public class TextToPdfContentTransformerTest
         }
         return sb.toString();
     }
+
+    private static class TransformCheckResult
+    {
+        private String usedFont;
+        private String errorMessage;
+
+        public String getUsedFont()
+        {
+            return usedFont;
+        }
+
+        public void setUsedFont(String usedFont)
+        {
+            this.usedFont = usedFont;
+        }
+
+        public String getErrorMessage()
+        {
+            return errorMessage;
+        }
+
+        public void setErrorMessage(String errorMessage)
+        {
+            this.errorMessage = errorMessage;
+        }
+    }
 }

model/src/main/java/org/alfresco/transform/common/RequestParamMap.java

@@ -66,6 +66,8 @@ public interface RequestParamMap
     String PAGE_LIMIT              = "pageLimit";
     String PDF_FORMAT              = "pdfFormat";
     String PDF_ORIENTATION         = "pdfOrientation";
+    String PDF_FONT                = "pdfFont";
+    String PDF_FONT_SIZE           = "pdfFontSize";
 
     // Parameters interpreted by the TransformController
     String DIRECT_ACCESS_URL       = "directAccessUrl";