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new 4839a21a OPENNLP-1521: Add documentation to describe how to
re-generate snowball stemmer code (#744)
4839a21a is described below
commit 4839a21a98b1ee7c85446b70aac1b1f43d80ddc7
Author: Richard Zowalla <[email protected]>
AuthorDate: Sun Jan 26 09:09:10 2025 +0100
OPENNLP-1521: Add documentation to describe how to re-generate snowball
stemmer code (#744)
---
README.md | 4 +++
dev/Snowball-Stemmer.md | 82 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 86 insertions(+)
diff --git a/README.md b/README.md
index e5cc5116..ddd98141 100644
--- a/README.md
+++ b/README.md
@@ -114,6 +114,10 @@ After cloning the repository go into the destination
directory and run:
mvn install
```
+### Additional Developement Information
+
+- [Building and Integrating Snowball Stemmer for
OpenNLP](dev/Snowball-Stemmer.md)
+
## Contributing
The Apache OpenNLP project is developed by volunteers and is always looking
for new contributors to work on all parts of the project. Every contribution is
welcome and needed to make it better. A contribution can be anything from a
small documentation typo fix to a new component.
diff --git a/dev/Snowball-Stemmer.md b/dev/Snowball-Stemmer.md
new file mode 100644
index 00000000..70117023
--- /dev/null
+++ b/dev/Snowball-Stemmer.md
@@ -0,0 +1,82 @@
+<!--
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements. See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+# Building and Integrating Snowball Stemmer for OpenNLP
+
+This guide outlines the steps to build the Snowball compiler, generate stemmer
classes, and integrate them into OpenNLP.
+
+---
+
+## Prerequisites
+
+- A Unix-like environment with `make` installed.
+- Access to the [Snowball
repository](https://github.com/snowballstem/snowball).
+- The OpenNLP repository checked out locally.
+
+---
+
+## Procedure
+
+### 1. Clone and Build the Snowball Compiler
+
+Clone the Snowball repository and build the compiler using `make`:
+
+```bash
+git clone https://github.com/snowballstem/snowball.git
+cd snowball
+make
+```
+
+This will generate the snowball compiler in the root directory of the
repository.
+
+# Run the Snowball Compiler
+
+Run the Snowball compiler to generate the stemmer code.
+
+```bash
+#!/bin/bash
+
+# Define an array of languages
+languages=("arabic" "catalan" "danish" "dutch" "english" "finnish" "french"
"german" "greek" "hungarian" "indonesian" "irish" "italian" "norwegian"
"porter" "portuguese" "romanian" "russian" "spanish" "swedish" "turkish")
+
+# Base paths
+snowball_exec_path="../snowball"
+output_base="../../../../IdeaProjects/opennlp/opennlp-tools/src/main/java/opennlp/tools/stemmer/snowball"
+
+# Loop through the languages and execute the command
+for lang in "${languages[@]}"; do
+ "${snowball_exec_path}" "${lang}.sbl" -java -o
"${output_base}/${lang}Stemmer"
+done
+```
+
+Usage:
+1. Save this script as `generate_stemmers.sh` at the appropriate location.
+2. Make it executable with `chmod +x generate_stemmers.sh`.
+3. Run it using `./generate_stemmers.sh`.
+
+# Manually Reformat Code to Match OpenNLP Style
+
+- Open the generated Java files in your preferred IDE or text editor.
+- Reformat the code to match the OpenNLP code style. This may include:
+- Adjusting indentation.
+- Renaming variables or methods as needed.
+- Ensuring proper spacing and alignment.
+
+# Add License Information
+
+- Ensure each generated file includes the appropriate license information for
both Snowball and OpenNLP.
+
