原创 Labwindows/cvi8.5 读 ini 文件

 2010-6-13 11:39  5660 11 14 分类: 软件与OS

//*********************************************************
// Labwindows/cvi8.5 读 ini 文件
// szlihongtao
// 2010-06-13
// 参照王建新的<Labwindows/cvi测试技术及工程应用> page304
// 稍有改写
//*********************************************************
#include <utility.h>
#include <formatio.h>
#include <cvirte.h>
#include <userint.h>
#include "inifile.h"
#include "ini.h"
//*********************************************************
static int panelHandle;
static IniText inihandle;
void getitems (void);
int gettype (char *itemname, char *sectionname);
//*********************************************************
int main (int argc, char *argv[])
{
if (InitCVIRTE (0, argv, 0) == 0)
  return -1; /* out of memory */
if ((panelHandle = LoadPanel (0, "ini.uir", PANEL)) < 0)
  return -1;
DisplayPanel (panelHandle);
RunUserInterface ();
DiscardPanel (panelHandle);
return 0;
}
//*********************************************************
// 选择文件
//*********************************************************
int CVICALLBACK FilenameBrowse (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
long filesize;
char filename[MAX_FILENAME_LEN];
char pathname[MAX_PATHNAME_LEN];
int sections;
char *sectionname;
int items;
char *itemname;
FILE *filestream;
char *initext;
int FileHandle;

switch (event)
{
  case EVENT_COMMIT:
  {
   if ((FileSelectPopup ("", "*.ini", "*.ini;*.cws;*.prj", "打开", VAL_OK_BUTTON, 0, 0, 0, 0, pathname)) > 0)
   {
    //由于带有路径的完整的文件名经常超出文本框显示范围，设置tooltip属性
    //鼠标停留在此时会显示提示信息
    SetCtrlToolTipAttribute (panelHandle, PANEL_FILENAME, CTRL_TOOLTIP_ATTR_TEXT, pathname);

    ResetTextBox (panelHandle, PANEL_TEXTBOX, "");
    if (GetFileSize (pathname, &filesize) == 0)   // 文件存在吗?
    {
     // Replaces all text in the specified text box with the string you specify
     // 将文件内容文本框用空格代替

     //去除路径名，获得文件名
     SplitPath (pathname, NULL, NULL, filename);

     //设置TextBox的Label属性为当前打开文件的文件名
     SetCtrlAttribute (panelHandle, PANEL_TEXTBOX, ATTR_LABEL_TEXT, filename);
//---------------------------------------------------------------------
     //动态分配内存，大小为文件大小加1，最后一位为结束符“\0”
     initext = malloc (filesize * sizeof (char) +1);

#if 1
     FileHandle=OpenFile (pathname, VAL_READ_ONLY, VAL_OPEN_AS_IS, VAL_ASCII);
     ReadFile (FileHandle, initext,filesize);

     //在文件的末尾加上结束符“\0”,注意这句话，一定要加结束符，否则 SetCtrlVal 显示出错
     initext[filesize] = '\0';
     SetCtrlVal (panelHandle, PANEL_TEXTBOX, initext);

     CloseFile (FileHandle); //关闭文件
#else
     filestream = fopen (pathname, "r");   //以只读方式打开文件

     //读取文件，将文件内容放入动态分配的内存中
     fread (initext, sizeof (char), filesize, filestream);

     //在文件的末尾加上结束符“\0”
     initext[filesize] = '\0';
     SetCtrlVal (panelHandle, PANEL_TEXTBOX, initext);

     fclose (filestream);//关闭文件
#endif
     free (initext);    // 释放动态分配的内存空间
//---------------------------------------------------------------------
    }
    else
     SetCtrlAttribute (panelHandle, PANEL_TEXTBOX, ATTR_LABEL_TEXT, "");

    SetCtrlVal (panelHandle, PANEL_FILENAME, pathname);

    inihandle = Ini_New (0); //创建一个ini文件句柄
    Ini_ReadFromFile (inihandle, pathname); //读取ini文件

    //获得ini文件总节数
    sections = Ini_NumberOfSections (inihandle);
    SetCtrlVal (panelHandle, PANEL_TOTAL_SECTIONS, sections);

    //若总节数不为0，则执行以下操作
    if (sections)
    {
     SetCtrlAttribute (panelHandle, PANEL_SECTION, ATTR_DIMMED, 0);
     SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_DIMMED, 0);

     //设置SECTION控件的最大、最小值
     SetCtrlAttribute (panelHandle, PANEL_SECTION, ATTR_MIN_VALUE, 1);
     SetCtrlAttribute (panelHandle, PANEL_SECTION, ATTR_MAX_VALUE, sections);

     if (Ini_NthSectionName (inihandle, 1, &sectionname)) //获得第一节的名称
     {
      SetCtrlVal (panelHandle, PANEL_SECTION_NAME, sectionname);

      items = Ini_NumberOfItems (inihandle, sectionname);//根据节的名称，获得某一节下总的项目数
      SetCtrlVal (panelHandle, PANEL_TOTAL_ITEMS, items);

      SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_MIN_VALUE, 1); //设置S项目控件的最大、最小值
      SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_MAX_VALUE, items);

      //获得某一节下第一个项目的项目名称
      if (Ini_NthItemName (inihandle, sectionname, 1, &itemname))
       gettype(itemname, sectionname); //调用自定义类型函数，获得某一项目的数据类型
     }
    }
    else
    {
     SetCtrlVal (panelHandle, PANEL_SECTION_NAME, "");
     SetCtrlVal (panelHandle, PANEL_ITEM_NAME, "");
     SetCtrlVal (panelHandle, PANEL_ITEM_VALUE_STRING, "");
     SetCtrlVal (panelHandle, PANEL_TOTAL_ITEMS, 0);
     SetCtrlAttribute (panelHandle, PANEL_SECTION, ATTR_DIMMED, 1);
     SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_DIMMED, 1);
    }
   }
   break;
  }
}
return 0;
}
//*********************************************************
// 更改节
//*********************************************************
int CVICALLBACK ChangeCurrentSection (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
char *itemname;
char *sectionname;
int sectionindex;

switch (event)
{
  case EVENT_COMMIT:
  {
   getitems ();   //调用自定义函数，得到项目

   SetCtrlVal (panelHandle, PANEL_ITEM, 1);
   GetCtrlVal (panelHandle, PANEL_SECTION, &sectionindex);
   Ini_NthSectionName (inihandle, sectionindex, &sectionname);
   if (Ini_NthItemName (inihandle, sectionname, 1, &itemname))
    gettype(itemname, sectionname); //传递itemname和sectionname参数值给自定义函数
   break;
  }
}
return 0;
}
//*********************************************************
// 更改项
//*********************************************************
int CVICALLBACK ChangeCurrentItem (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
switch (event)
{
  case EVENT_COMMIT:
   getitems ();
   break;
}
return 0;
}
//*********************************************************
int CVICALLBACK panelCB (int panel, int event, void *callbackData,
  int eventData1, int eventData2)
{
switch (event)
{
  case EVENT_CLOSE:
   QuitUserInterface (0);
   break;
}
return 0;
}
//*********************************************************
void getitems (void)
{
char pathname[MAX_PATHNAME_LEN];
int sections;
char *sectionname;
int items;
char *itemname;
int sectionindex;
int itemindex;

GetCtrlVal (panelHandle, PANEL_FILENAME, &pathname[0]);
Ini_ReadFromFile (inihandle, pathname);
sections = Ini_NumberOfSections (inihandle);
if (sections)
{
  GetCtrlVal (panelHandle, PANEL_SECTION, &sectionindex);

  if (Ini_NthSectionName (inihandle, sectionindex, &sectionname))
  {
    SetCtrlVal (panelHandle, PANEL_SECTION_NAME, sectionname);
    items = Ini_NumberOfItems (inihandle, sectionname);
    SetCtrlVal (panelHandle, PANEL_TOTAL_ITEMS, items);
    SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_MIN_VALUE, 1);
    SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_MAX_VALUE, items);

    GetCtrlVal (panelHandle, PANEL_ITEM, &itemindex);
    if (Ini_NthItemName (inihandle, sectionname, itemindex, &itemname))
    {
     gettype (itemname, sectionname);
    }
  }
}
}
//*********************************************************
// 获得某一项目的数据类型
// itemname    项的名称
// sectionname 节的名称
//*********************************************************
int gettype (char *itemname, char *sectionname)
{
    int booleanvalue;
char stringvalue[260];
int integervalue;
double doublevalue;
char *pointertostring;

SetCtrlVal (panelHandle, PANEL_ITEM_NAME, itemname); // 显示项目的名称

//获得项目值，并判断是否为布尔类型
if (Ini_GetBoolean (inihandle, sectionname, itemname, &booleanvalue) >0 )
{
  SetCtrlVal (panelHandle, PANEL_ITEM_TYPE, 1);
  Fmt (stringvalue, "%s<%i", booleanvalue);
  SetCtrlVal (panelHandle, PANEL_ITEM_VALUE_STRING, stringvalue);

  SetCtrlToolTipAttribute (panelHandle, PANEL_ITEM_VALUE_STRING, CTRL_TOOLTIP_ATTR_TEXT, "");
}
//获得项目值，并判断是否为整型
else if (Ini_GetInt (inihandle, sectionname, itemname, &integervalue) >0 )
{
  SetCtrlVal (panelHandle, PANEL_ITEM_TYPE, 2);
  Fmt (stringvalue, "%s<%i", integervalue);
  SetCtrlVal (panelHandle, PANEL_ITEM_VALUE_STRING, stringvalue);

  SetCtrlToolTipAttribute (panelHandle, PANEL_ITEM_VALUE_STRING, CTRL_TOOLTIP_ATTR_TEXT, "");
}
//获得项目值，并判断是否为双精度类型
else if (Ini_GetDouble (inihandle, sectionname, itemname, &doublevalue) >0 )
{
  SetCtrlVal (panelHandle, PANEL_ITEM_TYPE, 3);
  Fmt (stringvalue, "%s<%f", doublevalue);
  SetCtrlVal (panelHandle, PANEL_ITEM_VALUE_STRING, stringvalue);

  SetCtrlToolTipAttribute (panelHandle, PANEL_ITEM_VALUE_STRING, CTRL_TOOLTIP_ATTR_TEXT, "");
}
//获得项目值，并判断是否为字符串类型
else if (Ini_GetPointerToRawString (inihandle, sectionname, itemname, &pointertostring) >0 )
{
  SetCtrlVal (panelHandle, PANEL_ITEM_TYPE, 4);
  SetCtrlVal (panelHandle, PANEL_ITEM_VALUE_STRING, pointertostring);

  //由于值经常超出文本框显示范围，设置tooltip属性
  SetCtrlToolTipAttribute (panelHandle, PANEL_ITEM_VALUE_STRING, CTRL_TOOLTIP_ATTR_TEXT, pointertostring);
}
return 0;
}
//*********************************************************
//*********************************************************
//*********************************************************