go编程之路（1:go开发环境安装）

1. 操作系统：ubuntu 14.04
2. go 安装：
   1. 下载。保存目录：/home/xxxxx/下载，文件名：go1.4.2.linux-amd64.tar.gz。
   2. 解压到目标目录，命令 tar -zxvf /home/xxxx（用户名）/下载/go1.4.2.linux-amd64.tar.gz -C ：/home/xxxxx。
   3. 配置环境变量：
      • 打开/etc/profile文件，命令：sudo gedit /etc/profile
      • 在文件末尾添加如下命令：
      • export PATH=$PATH:/home/xxxx/go/bin   
      • export GOROOT=/home/xxxx/go
      • export GOPATH=/home/xxxx/mygo
      • 保存文件，退出后执行如下命令：source /etc/profile
      • 检查是否安装成功，执行命令：go version。能显示版本号（类似：go version go1.4.2）说明安装成功。
      • 在GOPATH目录下建三个文件夹：bin，src，pkg
3. sublime text 3安装：
   1. 下载。保存目录：/home/xxxxx/下载，文件名：sublime-text_build-3083_amd64.deb。
   2. 安装，执行命令：sudo dpkg -i /home/xxxx/下载/sublime-text_build-3083_amd64.deb
   3. 执行命令：subl，可以打开sublime
   4. 安装sublime text 3 的package control插件：ctrl+`,打开命令行，执行如下代码：
      import urllib.request,os; pf = 'Package Control.sublime-package'; ipp = sublime.installed_packages_path(); urllib.request.install_opener( urllib.request.build_opener( urllib.request.ProxyHandler()) ); open(os.path.join(ipp, pf), 'wb').write(urllib.request.urlopen( 'http://sublime.wbond.net/' + pf.replace(' ','%20')).read())
   5. 安装git，执行命令：apt-get install git。
   6. 安装gocode：执行命令：go get github.com/nsf/gocode
   7. 安装MarGo：执行命令：go get github.com/slene/margo
   8. 安装gosublime：sublime text 3->References->Package Control->install package,搜索gosublime,选择安装。
   9. 以同样的方式安装其他插件
   10. 编写go代码并运行：
   11. 
4. 解决sublime text 3 不能输入中文：
   1. sudo apt-get install build-essential libgtk2.0-dev
   2. 创建sublime-imfix.c文件，命令：gedit sublime-imfix.c。文件内容为：
   3. /*
       * sublime-imfix.c
       * Use LD_PRELOAD to interpose some function to fix sublime input method support for linux.
       * By Cjacker Huang <jianzhong.huang at i-soft.com.cn> *
       *
       * gcc -shared -o libsublime-imfix.so sublime_imfix.c  `pkg-config --libs --cflags gtk+-2.0` -fPIC
       * LD_PRELOAD=./libsublime-imfix.so sublime_text
       */
      #include <gtk/gtk.h>
      #include <gdk/gdkx.h>
      
      typedef GdkSegment GdkRegionBox;
      
      struct _GdkRegion
      {
          long size;
          long numRects;
          GdkRegionBox *rects;
          GdkRegionBox extents;
      };
      
      GtkIMContext *local_context;
      
      void
      gdk_region_get_clipbox (const GdkRegion *region,
                              GdkRectangle    *rectangle)
      {
          g_return_if_fail (region != NULL);
          g_return_if_fail (rectangle != NULL);
      
          rectangle->x = region->extents.x1;
          rectangle->y = region->extents.y1;
          rectangle->width = region->extents.x2 - region->extents.x1;
          rectangle->height = region->extents.y2 - region->extents.y1;
          GdkRectangle rect;
          rect.x = rectangle->x;
          rect.y = rectangle->y;
          rect.width = 0;
          rect.height = rectangle->height;
      
          //The caret width is 2;
          //Maybe sometimes we will make a mistake, but for most of the time, it should be the caret.
          if (rectangle->width == 2 && GTK_IS_IM_CONTEXT(local_context)) {
              gtk_im_context_set_cursor_location(local_context, rectangle);
          }
      }
      
      //this is needed, for example, if you input something in file dialog and return back the edit area
      //context will lost, so here we set it again.
      
      static GdkFilterReturn event_filter (GdkXEvent *xevent, GdkEvent *event, gpointer im_context)
      {
          XEvent *xev = (XEvent *)xevent;
      
          if (xev->type == KeyRelease && GTK_IS_IM_CONTEXT(im_context)) {
              GdkWindow *win = g_object_get_data(G_OBJECT(im_context), "window");
      
              if (GDK_IS_WINDOW(win)) {
                  gtk_im_context_set_client_window(im_context, win);
              }
          }
      
          return GDK_FILTER_CONTINUE;
      }
      
      void gtk_im_context_set_client_window (GtkIMContext *context,
                                             GdkWindow    *window)
      {
          GtkIMContextClass *klass;
          g_return_if_fail (GTK_IS_IM_CONTEXT (context));
          klass = GTK_IM_CONTEXT_GET_CLASS (context);
      
          if (klass->set_client_window) {
              klass->set_client_window (context, window);
          }
      
          if (!GDK_IS_WINDOW (window)) {
              return;
          }
      
          g_object_set_data(G_OBJECT(context), "window", window);
          int width = gdk_window_get_width(window);
          int height = gdk_window_get_height(window);
      
          if (width != 0 && height != 0) {
              gtk_im_context_focus_in(context);
              local_context = context;
          }
      
          gdk_window_add_filter (window, event_filter, context);
      }
   4. 编译成libsublime-imfix.so文件，命令： gcc -shared -o libsublime-imfix.so sublime-imfix.c `pkg-config --libs --cflags gtk+-2.0` -fPIC
   5. 测试，执行命令：LD_PRELOAD=./libsublime-imfix.so subl，切换到搜狗输入法，看看是否能输入中文
   6. 执行命令：sudo cp libsublime-imfix.so /usr/lib/
   7. 执行命令：sudo gedit /usr/bin/subl
   8. 添加一行：export LD_PRELOAD=./libsublime-imfix.so
   9. 
   10. OK了（只支持命令行打开sublime）。