Gradle build

.gitignore

@@ -28,3 +28,5 @@ configure
 libtool
 tesseract.pc
 stamp-h1
+build/
+.gradle/

README.md

@@ -64,6 +64,93 @@ To build eyes-two, additionally run the following:
 After building, the tess-two and eyes-two projects can be imported into Eclipse 
 using File->Import->Existing Projects into Workspace.
 
+## Gradle build
+
+This project can also be built using Gradle, tested and installed into a (local) Maven repository.
+
+### Prerequisites 
+
+Building the project through Gradle requires the NDK to be installed through the Android SDK manager. The build system will look for the NDK in $ANDROID_HOME/ndk-bundle/ 
+
+A file local.properties needs to be created with the location of your android SDK, the contents of this file should be:
+
+    sdk.dir=<path to Android SDK>
+
+### Building
+
+The project can be built using the following command: 
+
+    ./gradlew build
+
+This produces a release and debug  AAR file in tess-two/build/outputs/aar/
+
+### Installing in Maven
+
+The group and artifact ID's are:
+
+Release version:
+groupId: com.googlecode.tesseract.android
+artifactId: tess-two
+version: 5.2.0-SNAPSHOT
+packaging: aar
+
+Debug version
+groupId: com.googlecode.tesseract.android
+artifactId: tess-two-debug
+version: 5.2.0-SNAPSHOT
+packaging: aar
+
+
+Both the debug and release builds can be installed as artifacts in a Maven repository of your choosing.
+
+To install the debug build into your local repository run the following command:
+
+    ./gradlew publishDebugPublicationToMavenLocal 
+
+To install the release build into your local repository run the following command:
+
+    ./gradlew publishReleasePublicationToMavenLocal
+
+To install the build into a remote repository the following configuration items need to be added to your ~/.gradle/gradle.properties file
+
+    mavenSnapshots=<url>
+    mavenSnapshotsUsername=<username>
+    mavenSnapshotsPassword=<password>
+    mavenReleases=<url>
+    mavenReleasesUsername=<username>
+    mavenReleasesPassword=<password>
+
+To install into a maven repository, run one of the following commands:
+
+Debug/Release | Snapshots/Releases | Command
+--------------|--------------------|-------------------------------------------------------------------
+Debug         | Snapshot           | ./gradlew publishDebugPublicationToTess-two-snapshotsRepository
+Debug         | Releases           | ./gradlew publishDebugPublicationToTess-two-releasesRepository
+Release       | Snapshot           | ./gradlew publishReleasePublicationToTess-two-snapshotsRepository
+Release       | Releases           | ./gradlew publishReleasePublicationToTess-two-releasesRepository
+
+## Depending on tess-two from Gradle
+
+To use tess-two as a dependency in your Android Gradle project make sure the following lines are in your gradle build files:
+
+app/build.gradle:
+
+    dependencies { 
+        compile 'com.googlecode.tesseract.android:tess-two:5.2.0-SNAPSHOT'  
+        // other dependencies
+    }
+
+build.gradle:
+
+    allprojects {
+        repositories {
+            mavenLocal()
+            // other repo's
+        }
+    }
+
+
+
 ## Maven
 
 While this project does not require Maven (and this project has not yet been 

build.gradle

@@ -0,0 +1,19 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:1.2.3'
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}

eyes-two/build.gradle

@@ -0,0 +1,71 @@
+import org.apache.tools.ant.taskdefs.condition.Os
+
+apply plugin: 'com.android.application'
+apply plugin: 'maven-publish'
+
+android {
+    compileSdkVersion 22
+        buildToolsVersion "23.0.0 rc3"
+
+        defaultConfig {
+            minSdkVersion 8
+            targetSdkVersion 22
+            versionCode 1
+            versionName "1.0"
+        }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    sourceSets {
+        main {
+            manifest.srcFile 'AndroidManifest.xml'
+            aidl.srcDirs = ['src']
+            java.srcDirs = ['src']
+            res.srcDirs = ['res']
+            jniLibs.srcDirs = ['libs']
+        }
+    }
+
+    // call regular ndk-build(.cmd) script from app directory
+    task ndkBuild(type: Exec) {
+        workingDir = file("${android.sdkDirectory}/ndk-bundle")
+        if (Os.isFamily(Os.FAMILY_WINDOWS)) {
+            commandLine 'ndk-build.cmd', '-C', file('.').absolutePath
+        } else {
+            commandLine './ndk-build', '-C', file('.').absolutePath
+        }
+    }
+
+    tasks.withType(JavaCompile) {
+        compileTask -> compileTask.dependsOn ndkBuild
+    }
+
+    // cleanup task
+    task ndkClean(type: Exec) {
+        workingDir = file("${android.sdkDirectory}/ndk-bundle")
+        if (Os.isFamily(Os.FAMILY_WINDOWS)) {
+            commandLine 'ndk-build.cmd', '-C', file('.').absolutePath, 'clean'
+        } else {
+            commandLine './ndk-build', '-C', file('.').absolutePath, 'clean'
+        }
+    }
+
+    tasks.withType(Delete) {
+        cleanTask -> cleanTask.dependsOn ndkClean
+    } 
+
+    lintOptions {
+        abortOnError false
+    }
+
+}
+
+dependencies {
+    compile project(':tess-two');
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support:appcompat-v7:22.2.1'
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue Jul 21 14:03:24 CEST 2015
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.5-all.zip

gradlew

@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"