From 790f80f0146045237b2e8af2fb9545b6b3774df2 Mon Sep 17 00:00:00 2001
From: Stephan Porada <sporada@uni-bielefeld.de>
Date: Tue, 7 Jan 2020 15:13:10 +0100
Subject: [PATCH] Add merge_images

---
 .gitlab-ci.yml | 44 ++++++++++++++++++++++++++++++++++++++++++++
 Dockerfile     | 23 +++++++++++++++++++++++
 merge_images   | 39 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 .gitlab-ci.yml
 create mode 100644 Dockerfile
 create mode 100644 merge_images

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..ea08fd4
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,44 @@
+image: docker:stable
+
+services:
+  - docker:stable-dind
+
+variables:
+  DOCKER_DRIVER: overlay2
+
+stages:
+  - build
+  - push
+
+before_script:
+  - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+
+Build:
+  script:
+    - docker build --pull -t $CI_REGISTRY_IMAGE:tmp .
+    - docker push $CI_REGISTRY_IMAGE:tmp
+  stage: build
+  tags:
+  - docker
+
+Push latest:
+  only:
+    - master
+  script:
+    - docker pull $CI_REGISTRY_IMAGE:tmp
+    - docker tag $CI_REGISTRY_IMAGE:tmp $CI_REGISTRY_IMAGE:latest
+    - docker push $CI_REGISTRY_IMAGE:latest
+  stage: push
+  tags:
+  - docker
+
+Push tag:
+  only:
+    - tags
+  script:
+    - docker pull $CI_REGISTRY_IMAGE:tmp
+    - docker tag $CI_REGISTRY_IMAGE:tmp $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
+    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
+  stage: push
+  tags:
+  - docker
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..ab18c64
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,23 @@
+FROM debian:9-slim
+
+
+# Define image metadata
+LABEL maintainer="inf_sfb1288@lists.uni-bielefeld.de"
+
+
+ENV LANG=C.UTF-8
+
+
+# Install prerequisites
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+      imagemagick \
+      python3.5 \
+ && rm -rf /var/lib/apt/lists/*
+
+
+# Install merge_images
+COPY merge_images /usr/local/bin
+
+ENTRYPOINT ["merge_images"]
+CMD ["--help"]
diff --git a/merge_images b/merge_images
new file mode 100644
index 0000000..c503a29
--- /dev/null
+++ b/merge_images
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3.5
+# coding=utf-8
+
+
+"""
+merge_images
+
+Usage:  For usage instructions run with option --help
+Author: Stephan Porada <sporada@uni-bielefeld.de>
+
+"""
+
+import os
+import argparse
+
+
+def parse_arguments():
+    parser = argparse.ArgumentParser(description='Merges given input images '
+                                                 'into one multipage tiff.')
+    parser.add_argument('-i', dest='input_dir', required=True)
+    parser.add_argument('-o', dest='output_dir', required=True)
+    return parser.parse_args()
+
+
+def merge_images(input_dir, output_dir):
+    os.system('mkdir {}'.format(output_dir))
+    os.system('ls -v {}/*.* >> file_list.txt'.format(input_dir))
+    os.system('convert @file_list.txt {}/combined.tiff'.format(output_dir))
+    os.system('cat "file_list.txt" | xargs rm')
+    os.system('rm file_list.txt')
+
+
+def main():
+    args = parse_arguments()
+    merge_images(args.input_dir, args.output_dir)
+
+
+if __name__ == '__main__':
+    main()