[oe] [PATCH] contrib/tesseract-langs.sh: add script to generate recipes for tesseract languages

[Mario Domenech Goulart]

This script writes language recipes for tesseract.  It downloads the
listing of available languages and language tarballs from the official
site and writes language recipes tesseract-lang-<lang>_<version>.bb
for each language.

Signed-off-by: Mario Domenech Goulart <mario at ossystems.com.br>
---
 contrib/tesseract-langs.sh |   92 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100755 contrib/tesseract-langs.sh

diff --git a/contrib/tesseract-langs.sh b/contrib/tesseract-langs.sh
new file mode 100755
index 0000000..50873c1
--- /dev/null
+++ b/contrib/tesseract-langs.sh
@@ -0,0 +1,92 @@
+#! /bin/sh
+
+# Copyright (C) 2014, O.S. Systems Software Ltda. All Rights Reserved
+# Released under the MIT license (see meta-openembedded layer's COPYING.MIT)
+
+PV='3.02'
+
+# Sometimes the software package has a minor version, but language
+# packages have not.  Example: 
+#   software package: tesseract-ocr-3.02.02.tar.gz
+#   language package: tesseract-ocr-3.02.por.tar.gz
+MINOR_PV=02
+
+recipes_dir=$1
+
+usage() {
+    echo "Usage: `basename $0` <recipes dir> [ <download dir> ]"
+}
+
+if [ -z "$recipes_dir" ]; then
+    usage
+    exit 1
+fi
+mkdir -p "$recipes_dir"
+
+file_list_uri='https://code.google.com/p/tesseract-ocr/downloads/list'
+file_list=`mktemp`
+
+remove_dl_dir=
+if [ -z "$2" ]; then
+    remove_dl_dir=1
+    dl_dir=`mktemp -d`
+else
+    dl_dir="$2"
+fi
+
+mkdir -p $dl_dir
+
+tesseract_langs() {
+    wget -q -O "$file_list" "$file_list_uri"
+
+    grep -E 'a href="detail\?name=tesseract-ocr-'${PV}'\.[^\.]+.tar.gz&amp;can=2&amp;q=">' "$file_list" | \
+        sed -r -e 's/.*tesseract-ocr-'${PV}'\.*([^\.]+)\.tar\.gz.*/\1/' | \
+        grep -Ev '('${MINOR_PV}'|'${MINOR_PV}'-doc-html)' | \
+        sort -u
+}
+
+download_lang_files() {
+    local langs="$1"
+    local uri
+    for lang in $langs; do
+        if [ ! -e "$dl_dir/tesseract-ocr-${PV}.${lang}.tar.gz" ]; then
+            uri="https://tesseract-ocr.googlecode.com/files/tesseract-ocr-${PV}.${lang}.tar.gz"
+            echo "Downloading $uri"
+            wget -q -P "$dl_dir" "$uri"
+        fi
+    done
+}
+
+create_recipe() {
+    local lang=$1
+    local tarball
+
+    tarball="$dl_dir/tesseract-ocr-${PV}.${lang}.tar.gz"
+
+    md5sum=`md5sum $tarball | awk '{print $1}'`
+    sha256sum=`sha256sum $tarball | awk '{print $1}'`
+
+    cat > $recipes_dir/tesseract-lang-`echo ${lang} | sed s/_/-/g`_${PV}.bb <<EOF
+# Copyright (C) 2014, O.S. Systems Software Ltda. All Rights Reserved
+# Released under the MIT license (see meta-openembedded layer's COPYING.MIT)
+
+TESSERACT_LANG = "$lang"
+
+require tesseract-lang.inc
+
+SRC_URI[md5sum] = "${md5sum}"
+SRC_URI[sha256sum] = "${sha256sum}"
+EOF
+}
+
+
+LANGS=`tesseract_langs`
+
+download_lang_files "$LANGS"
+
+for lang in $LANGS; do
+    create_recipe $lang
+done
+
+[ -n "$remove_dl_dir" ] && rm -rf $dl_dir
+rm -f $file_list
-- 
1.7.10.4