initial commit

.hgignore

@@ -0,0 +1,3 @@
+mode:regex
+
+^build-qbolt-

Makefile

@@ -0,0 +1,11 @@
+
+.PHONY: all clean
+
+all: qbolt.o
+
+clean:
+	if [ -f qbolt.o ] ; then rm qbolt.o ; fi
+	if [ -f qbolt ] ; then rm qbolt ; fi
+
+qbolt.o: *.go 
+	go build -ldflags='-s -w' -buildmode=c-shared -o qbolt.o

MemoryStore.go

@@ -0,0 +1,46 @@
+package main
+
+import "C"
+import (
+	"errors"
+	"sync"
+)
+
+type ObjectReference int64
+
+var NullObjectReference error = errors.New("Null object reference")
+
+// GoMemoryStore is a int->interface storage structure so that Go pointers are
+// never exposed to C code.
+type GoMemoryStore struct {
+	mtx   sync.RWMutex
+	items map[int64]interface{}
+	next  int64
+}
+
+func (this *GoMemoryStore) Put(itm interface{}) ObjectReference {
+	this.mtx.Lock()
+	defer this.mtx.Unlock()
+
+	key := this.next
+	this.items[key] = itm
+	this.next++
+	return ObjectReference(key)
+}
+
+func (this *GoMemoryStore) Get(i ObjectReference) (interface{}, bool) {
+	this.mtx.RLock()
+	defer this.mtx.RUnlock()
+
+	ret, ok := this.items[int64(i)]
+	return ret, ok
+}
+
+func (this *GoMemoryStore) Delete(i ObjectReference) {
+	this.mtx.Lock()
+	defer this.mtx.Unlock()
+
+	delete(this.items, int64(i))
+}
+
+var gms GoMemoryStore

main.go

@@ -0,0 +1,135 @@
+package main
+
+import "C"
+import (
+	"errors"
+	"os"
+
+	"github.com/boltdb/bolt"
+)
+
+//export Bolt_Options_New
+func Bolt_Options_New() ObjectReference {
+	b := *bolt.DefaultOptions
+
+	return gms.Put(&b)
+}
+
+//export Bolt_Options_New_Readonly
+func Bolt_Options_New_Readonly() ObjectReference {
+	b := *bolt.DefaultOptions
+	b.ReadOnly = true
+
+	return gms.Put(&b)
+}
+
+//export Recall
+func Recall(f func(a int64) int64) int64 {
+	return f(3)
+}
+
+//export Bolt_Open
+func Bolt_Open(path string, mode uint32, opts ObjectReference) (ObjectReference, error) {
+	optsIFC, ok := gms.Get(opts)
+	if !ok {
+		return 0, NullObjectReference
+	}
+
+	ptrBoltOps, ok := optsIFC.(*bolt.Options)
+	if !ok {
+		return 0, NullObjectReference
+	}
+
+	ptrDB, err := bolt.Open(path, os.FileMode(mode), ptrBoltOps)
+	if err != nil {
+		return 0, err
+	}
+
+	dbRef := gms.Put(ptrDB)
+	return dbRef, nil
+}
+
+func withBoltDBReference(b ObjectReference, fn func(db *bolt.DB) error) error {
+	dbIFC, ok := gms.Get(b)
+	if !ok {
+		return NullObjectReference
+	}
+
+	ptrDB, ok := dbIFC.(*bolt.DB)
+	if !ok {
+		return NullObjectReference
+	}
+
+	return fn(ptrDB)
+}
+
+//export Error_Error
+func Error_Error(e error) string {
+	return e.Error()
+}
+
+//export Bolt_ListBuckets
+func Bolt_ListBuckets(b ObjectReference, browse []string, withEach func(string)) error {
+	if len(browse) == 0 {
+		return Bolt_ListBucketsAtRoot(b, withEach)
+	}
+
+	err := withBoltDBReference(b, func(db *bolt.DB) error {
+		return db.View(func(tx *bolt.Tx) error {
+
+			bucket := tx.Bucket([]byte(browse[0]))
+			if bucket == nil {
+				return errors.New("Unknown bucket")
+			}
+
+			for i := 1; i < len(browse); i += 1 {
+				bucket = bucket.Bucket([]byte(browse[i]))
+				if bucket == nil {
+					return errors.New("Unknown bucket")
+				}
+			}
+
+			return bucket.ForEach(func(k, v []byte) error {
+
+				withEach(string(k))
+				return nil
+			})
+
+		})
+	})
+	return err
+}
+
+//export Bolt_ListBucketsAtRoot
+func Bolt_ListBucketsAtRoot(b ObjectReference, withEach func(string)) error {
+	err := withBoltDBReference(b, func(db *bolt.DB) error {
+		return db.View(func(tx *bolt.Tx) error {
+
+			return tx.ForEach(func(n []byte, bucket *bolt.Bucket) error {
+
+				withEach(string(n))
+				return nil
+			})
+
+		})
+	})
+	return err
+}
+
+//export Bolt_Close
+func Bolt_Close(b ObjectReference) error {
+	err := withBoltDBReference(b, func(db *bolt.DB) error {
+		return db.Close()
+	})
+
+	if err != nil {
+		return err
+	}
+
+	gms.Delete(b)
+	return nil
+}
+
+func main() {
+	// virtual
+}

qbolt.h

@@ -0,0 +1,79 @@
+/* Created by "go tool cgo" - DO NOT EDIT. */
+
+/* package code.ivysaur.me/qbolt */
+
+/* Start of preamble from import "C" comments.  */
+
+
+
+
+/* End of preamble from import "C" comments.  */
+
+
+/* Start of boilerplate cgo prologue.  */
+
+#ifndef GO_CGO_PROLOGUE_H
+#define GO_CGO_PROLOGUE_H
+
+typedef signed char GoInt8;
+typedef unsigned char GoUint8;
+typedef short GoInt16;
+typedef unsigned short GoUint16;
+typedef int GoInt32;
+typedef unsigned int GoUint32;
+typedef long long GoInt64;
+typedef unsigned long long GoUint64;
+typedef GoInt64 GoInt;
+typedef GoUint64 GoUint;
+typedef __SIZE_TYPE__ GoUintptr;
+typedef float GoFloat32;
+typedef double GoFloat64;
+typedef float _Complex GoComplex64;
+typedef double _Complex GoComplex128;
+
+/*
+  static assertion to make sure the file is being used on architecture
+  at least with matching size of GoInt.
+*/
+typedef char _check_for_64_bit_pointer_matching_GoInt[sizeof(void*)==64/8 ? 1:-1];
+
+typedef struct { const char *p; GoInt n; } GoString;
+typedef void *GoMap;
+typedef void *GoChan;
+typedef struct { void *t; void *v; } GoInterface;
+typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
+
+#endif
+
+/* End of boilerplate cgo prologue.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+extern GoInt64 Bolt_Options_New();
+
+extern GoInt64 Bolt_Options_New_Readonly();
+
+extern GoInt64 Recall(void* p0);
+
+/* Return type for Bolt_Open */
+struct Bolt_Open_return {
+	GoInt64 r0;
+	GoInterface r1;
+};
+
+extern struct Bolt_Open_return Bolt_Open(GoString p0, GoUint32 p1, GoInt64 p2);
+
+extern GoString Error_Error(GoInterface p0);
+
+extern GoInterface Bolt_ListBuckets(GoInt64 p0, GoSlice p1, void* p2);
+
+extern GoInterface Bolt_ListBucketsAtRoot(GoInt64 p0, void* p1);
+
+extern GoInterface Bolt_Close(GoInt64 p0);
+
+#ifdef __cplusplus
+}
+#endif

qbolt/main.cpp

@@ -0,0 +1,11 @@
+#include "mainwindow.h"
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+
+    return a.exec();
+}

qbolt/mainwindow.cpp

@@ -0,0 +1,61 @@
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+#include "../qbolt.h"
+
+#include <QFileDialog>
+#include <QMessageBox>
+
+MainWindow::MainWindow(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::MainWindow)
+{
+    ui->setupUi(this);
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
+
+static QString GetError(GoInterface err) {
+    if (err.v == nullptr) {
+        return ""; // no error
+    }
+
+    GoString gs = Error_Error(err);
+    return QString::fromUtf8(gs.p, gs.n);
+}
+
+void MainWindow::on_actionOpen_database_triggered()
+{
+    QString file = QFileDialog::getOpenFileName(this, tr("Select bolt database..."));
+    if (! file.length()) {
+        return;
+    }
+
+    auto opts = Bolt_Options_New_Readonly();
+
+    QByteArray filePathBytes(file.toUtf8());
+    GoString filePathGS = {filePathBytes.data(), filePathBytes.length()};
+
+    auto open_ret = Bolt_Open(filePathGS, 0444, opts);
+    if (open_ret.r1.v != nullptr) {
+        QMessageBox qmb;
+        qmb.setText(tr("Error opening database: %s").arg(GetError(open_ret.r1)));
+        qmb.exec();
+        return;
+    }
+
+    // do something
+
+    // close database
+
+    auto err = Bolt_Close(open_ret.r0);
+    if (err.v != nullptr) {
+        QMessageBox qmb;
+        qmb.setText(tr("Error closing database: %s").arg(GetError(err)));
+        qmb.exec();
+        return;
+    }
+}

qbolt/mainwindow.h

@@ -0,0 +1,25 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+namespace Ui {
+class MainWindow;
+}
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    explicit MainWindow(QWidget *parent = 0);
+    ~MainWindow();
+
+private slots:
+    void on_actionOpen_database_triggered();
+
+private:
+    Ui::MainWindow *ui;
+};
+
+#endif // MAINWINDOW_H

qbolt/mainwindow.ui

@@ -0,0 +1,203 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>668</width>
+    <height>405</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>QBolt</string>
+  </property>
+  <widget class="QWidget" name="centralWidget">
+   <layout class="QGridLayout" name="gridLayout">
+    <property name="leftMargin">
+     <number>0</number>
+    </property>
+    <property name="topMargin">
+     <number>0</number>
+    </property>
+    <property name="rightMargin">
+     <number>0</number>
+    </property>
+    <property name="bottomMargin">
+     <number>0</number>
+    </property>
+    <item row="0" column="0">
+     <widget class="QSplitter" name="splitter">
+      <property name="orientation">
+       <enum>Qt::Horizontal</enum>
+      </property>
+      <property name="childrenCollapsible">
+       <bool>false</bool>
+      </property>
+      <widget class="QTreeWidget" name="bucketTree">
+       <property name="uniformRowHeights">
+        <bool>true</bool>
+       </property>
+       <column>
+        <property name="text">
+         <string>Bucket</string>
+        </property>
+       </column>
+      </widget>
+      <widget class="QTabWidget" name="tabWidget">
+       <property name="currentIndex">
+        <number>0</number>
+       </property>
+       <widget class="QWidget" name="propertiesTab">
+        <attribute name="title">
+         <string>Properties</string>
+        </attribute>
+        <layout class="QGridLayout" name="gridLayout_2">
+         <property name="leftMargin">
+          <number>3</number>
+         </property>
+         <property name="topMargin">
+          <number>3</number>
+         </property>
+         <property name="rightMargin">
+          <number>3</number>
+         </property>
+         <property name="bottomMargin">
+          <number>3</number>
+         </property>
+         <item row="0" column="0">
+          <widget class="QPlainTextEdit" name="plainTextEdit">
+           <property name="frameShape">
+            <enum>QFrame::NoFrame</enum>
+           </property>
+           <property name="readOnly">
+            <bool>true</bool>
+           </property>
+           <property name="plainText">
+            <string>No selection</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+       <widget class="QWidget" name="dataTab">
+        <attribute name="title">
+         <string>Data</string>
+        </attribute>
+        <layout class="QGridLayout" name="gridLayout_3">
+         <property name="leftMargin">
+          <number>3</number>
+         </property>
+         <property name="topMargin">
+          <number>3</number>
+         </property>
+         <property name="rightMargin">
+          <number>3</number>
+         </property>
+         <property name="bottomMargin">
+          <number>3</number>
+         </property>
+         <item row="0" column="0">
+          <widget class="QTreeWidget" name="treeWidget">
+           <property name="frameShape">
+            <enum>QFrame::NoFrame</enum>
+           </property>
+           <property name="indentation">
+            <number>0</number>
+           </property>
+           <property name="rootIsDecorated">
+            <bool>false</bool>
+           </property>
+           <property name="uniformRowHeights">
+            <bool>true</bool>
+           </property>
+           <attribute name="headerVisible">
+            <bool>false</bool>
+           </attribute>
+           <column>
+            <property name="text">
+             <string notr="true">1</string>
+            </property>
+           </column>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+      </widget>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menuBar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>668</width>
+     <height>21</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menuFile">
+    <property name="title">
+     <string>Fi&amp;le</string>
+    </property>
+    <addaction name="actionOpen_database"/>
+    <addaction name="separator"/>
+    <addaction name="actionExit"/>
+   </widget>
+   <widget class="QMenu" name="menuHelp">
+    <property name="title">
+     <string>Help</string>
+    </property>
+    <addaction name="actionAbout_qbolt"/>
+    <addaction name="actionAbout_Qt"/>
+   </widget>
+   <addaction name="menuFile"/>
+   <addaction name="menuHelp"/>
+  </widget>
+  <widget class="QToolBar" name="mainToolBar">
+   <attribute name="toolBarArea">
+    <enum>TopToolBarArea</enum>
+   </attribute>
+   <attribute name="toolBarBreak">
+    <bool>false</bool>
+   </attribute>
+   <addaction name="actionOpen_database"/>
+  </widget>
+  <widget class="QStatusBar" name="statusBar"/>
+  <action name="actionAbout_qbolt">
+   <property name="icon">
+    <iconset resource="resources.qrc">
+     <normaloff>:/rsrc/information.png</normaloff>:/rsrc/information.png</iconset>
+   </property>
+   <property name="text">
+    <string>About QBolt</string>
+   </property>
+  </action>
+  <action name="actionAbout_Qt">
+   <property name="text">
+    <string>About Qt</string>
+   </property>
+  </action>
+  <action name="actionOpen_database">
+   <property name="icon">
+    <iconset resource="resources.qrc">
+     <normaloff>:/rsrc/database_add.png</normaloff>:/rsrc/database_add.png</iconset>
+   </property>
+   <property name="text">
+    <string>Open database...</string>
+   </property>
+  </action>
+  <action name="actionExit">
+   <property name="text">
+    <string>Exit</string>
+   </property>
+  </action>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <resources>
+  <include location="resources.qrc"/>
+ </resources>
+ <connections/>
+</ui>

qbolt/qbolt.pro

@@ -0,0 +1,36 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2017-05-15T19:38:33
+#
+#-------------------------------------------------
+
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TARGET = qbolt
+TEMPLATE = app
+
+# The following define makes your compiler emit warnings if you use
+# any feature of Qt which as been marked as deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+
+QMAKE_LFLAGS += ../qbolt.o
+
+# You can also make your code fail to compile if you use deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+
+SOURCES += main.cpp\
+        mainwindow.cpp
+
+HEADERS  += mainwindow.h
+
+FORMS    += mainwindow.ui
+
+RESOURCES += \
+    resources.qrc

qbolt/qbolt.pro.user

@@ -0,0 +1,336 @@
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+<qtcreator>
+ <data>
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qbolt/resources.qrc

@@ -0,0 +1,7 @@
+<RCC>
+    <qresource prefix="/">
+        <file>rsrc/database_add.png</file>
+        <file>rsrc/table.png</file>
+        <file>rsrc/information.png</file>
+    </qresource>
+</RCC>