什么是解析C ++中的INI文件的最简单的方法？(What is the easiest way t

我试图解析使用C ++ INI文件。什么任何提示是实现这一目标的最佳途径？我应该使用INI文件处理的Windows API工具（与我完全不熟悉），一个开放源代码解决方案或尝试手动分析它？

Answer 1:

您可以使用Windows API函数，比如GetPrivateProfileString（）和GetPrivateProfileInt（）。

Answer 2:

如果你需要一个跨平台的解决方案，尝试Boost的程序选项库。

Answer 3:

我从来没有解析INI文件，所以我不能在这个问题上过于具体。
但我有一个建议：
只要现有的满足您的要求不要重新发明轮子

http://en.wikipedia.org/wiki/INI_file#Accessing_INI_files
http://sdl-cfg.sourceforge.net/
http://sourceforge.net/projects/libini/
http://www.codeproject.com/KB/files/config-file-parser.aspx

祝好运：）

Answer 4:

我用SimpleIni 。它是跨平台的。

Answer 5:

如果您已经使用Qt

QSettings my_settings("filename.ini", QSettings::IniFormat);

然后读取值

my_settings.value("GroupName/ValueName", <<DEFAULT_VAL>>).toInt()

有迹象表明，将您的INI值到这两种标准类型和Qt其他类型转换器的一群。查看QSettings Qt文档以获取更多信息。

Answer 6:

这个问题是有点老了，但我会后我的答案。我已经尝试了各种INI类（你可以看到他们在我的网站），我还使用simpleIni，因为我想在Windows和WinCE INI文件的工作。窗口的GetPrivateProfileString（）只适用于WinCE的注册表。

这是很容易与simpleIni阅读。下面是一个例子：

#include "SimpleIni\SimpleIni.h"    
CSimpleIniA ini;
ini.SetUnicode();
ini.LoadFile(FileName);
const char * pVal = ini.GetValue(section, entry, DefaultStr);

Answer 7:

inih是用C语言编写一个简单的ini分析器，它带有一个C ++包装了。实例：

#include "INIReader.h"    

INIReader reader("test.ini");

std::cout << "version="
          << reader.GetInteger("protocol", "version", -1) << ", name="
          << reader.Get("user", "name", "UNKNOWN") << ", active="
          << reader.GetBoolean("user", "active", true) << "\n";

笔者也有现有的库列表在这里。

Answer 8:

你试过libconfig ; 很JSON的语法。我喜欢它在XML配置文件。

Answer 9:

如果你有兴趣在平台的可移植性，你也可以尝试Boost.PropertyTree。它支持INI为persistancy格式，虽然属性树我是1级深而已。

Answer 10:

除非你打算使应用程序跨平台，使用Windows API调用将是最好的一段路要走。不理会有关只为16位应用程序的兼容性而提供的API文档中的注意事项。

Answer 11:

也许一晚answer..But，值得了解options..If你需要一个跨平台的解决方案，绝对可以尝试GLIB ,,其有趣..（ https://developer.gnome.org/glib/stable/glib-键值文件parser.html ）

Answer 12:

我知道这个问题是很老了，但是我来到它，因为我需要的东西跨平台的Linux，win32的......我写了下面的功能，它是一个可以解析INI文件的单一功能，希望别人会发现它很有用。

规则及注意事项：BUF解析必须是一个NULL结尾的字符串。载入你的ini文件到一个字符数组字符串和调用这个函数来分析它。节名称必须有[]他们周围的括号，比如这个[MySection]，也价值观和部分必须在一行开始没有前导空格。它将分析文件与Windows \ r \ n或使用Linux \ n行尾。注释应该用＃或//并在文件的顶部开始，没有意见应与INI条目数据混合。行情和蜱从返回的字符串两端修剪。如果他们在外面的引号的空间仅修剪。字符串是不要求有报价，如果报价缺少空格被修剪。如果你有一个浮动只是执行上的RET缓冲区ATOF（RET）您还可以提取号码或其他数据，例如。

//  -----note: no escape is nessesary for inner quotes or ticks-----
//  -----------------------------example----------------------------
//  [Entry2]
//  Alignment   = 1
//  LightLvl=128
//  Library     = 5555
//  StrValA =  Inner "quoted" or 'quoted' strings are ok to use
//  StrValB =  "This a "quoted" or 'quoted' String Value"
//  StrValC =  'This a "tick" or 'tick' String Value'
//  StrValD =  "Missing quote at end will still work
//  StrValE =  This is another "quote" example
//  StrValF =  "  Spaces inside the quote are preserved "
//  StrValG =  This works too and spaces are trimmed away
//  StrValH =
//  ----------------------------------------------------------------
//12oClocker super lean and mean INI file parser (with section support)
//set section to 0 to disable section support
//returns TRUE if we were able to extract a string into ret value
//NextSection is a char* pointer, will be set to zero if no next section is found
//will be set to pointer of next section if it was found.
//use it like this... char* NextSection = 0;  GrabIniValue(X,X,X,X,X,&NextSection);
//buf is data to parse, ret is the user supplied return buffer
BOOL GrabIniValue(char* buf, const char* section, const char* valname, char* ret, int retbuflen, char** NextSection)
{
    if(!buf){*ret=0; return FALSE;}

    char* s = buf; //search starts at "s" pointer
    char* e = 0;   //end of section pointer

    //find section
    if(section)
    {
        int L = strlen(section);
        SearchAgain1:
        s = strstr(s,section); if(!s){*ret=0; return FALSE;}    //find section
        if(s > buf && (*(s-1))!='\n'){s+=L; goto SearchAgain1;} //section must be at begining of a line!
        s+=L;                                                   //found section, skip past section name
        while(*s!='\n'){s++;} s++;                              //spin until next line, s is now begining of section data
        e = strstr(s,"\n[");                                    //find begining of next section or end of file
        if(e){*e=0;}                                            //if we found begining of next section, null the \n so we don't search past section
        if(NextSection)                                         //user passed in a NextSection pointer
        { if(e){*NextSection=(e+1);}else{*NextSection=0;} }     //set pointer to next section
    }

    //restore char at end of section, ret=empty_string, return FALSE
    #define RESTORE_E     if(e){*e='\n';}
    #define SAFE_RETURN   RESTORE_E;  (*ret)=0;  return FALSE

    //find valname
    int L = strlen(valname);
    SearchAgain2:
    s = strstr(s,valname); if(!s){SAFE_RETURN;}             //find valname
    if(s > buf && (*(s-1))!='\n'){s+=L; goto SearchAgain2;} //valname must be at begining of a line!
    s+=L;                                                   //found valname match, skip past it
    while(*s==' ' || *s == '\t'){s++;}                      //skip spaces and tabs
    if(!(*s)){SAFE_RETURN;}                                 //if NULL encounted do safe return
    if(*s != '='){goto SearchAgain2;}                       //no equal sign found after valname, search again
    s++;                                                    //skip past the equal sign
    while(*s==' '  || *s=='\t'){s++;}                       //skip spaces and tabs
    while(*s=='\"' || *s=='\''){s++;}                       //skip past quotes and ticks
    if(!(*s)){SAFE_RETURN;}                                 //if NULL encounted do safe return
    char* E = s;                                            //s is now the begining of the valname data
    while(*E!='\r' && *E!='\n' && *E!=0){E++;} E--;         //find end of line or end of string, then backup 1 char
    while(E > s && (*E==' ' || *E=='\t')){E--;}             //move backwards past spaces and tabs
    while(E > s && (*E=='\"' || *E=='\'')){E--;}            //move backwards past quotes and ticks
    L = E-s+1;                                              //length of string to extract NOT including NULL
    if(L<1 || L+1 > retbuflen){SAFE_RETURN;}                //empty string or buffer size too small
    strncpy(ret,s,L);                                       //copy the string
    ret[L]=0;                                               //null last char on return buffer
    RESTORE_E;
    return TRUE;

    #undef RESTORE_E
    #undef SAFE_RETURN
}

如何使用...例如....

char sFileData[] = "[MySection]\r\n"
"MyValue1 = 123\r\n"
"MyValue2 = 456\r\n"
"MyValue3 = 789\r\n"
"\r\n"
"[MySection]\r\n"
"MyValue1 = Hello1\r\n"
"MyValue2 = Hello2\r\n"
"MyValue3 = Hello3\r\n"
"\r\n";
char str[256];
char* sSec = sFileData;
char secName[] = "[MySection]"; //we support sections with same name
while(sSec)//while we have a valid sNextSec
{
    //print values of the sections
    char* next=0;//in case we dont have any sucessful grabs
    if(GrabIniValue(sSec,secName,"MyValue1",str,sizeof(str),&next)) { printf("MyValue1 = [%s]\n",str); }
    if(GrabIniValue(sSec,secName,"MyValue2",str,sizeof(str),0))     { printf("MyValue2 = [%s]\n",str); }
    if(GrabIniValue(sSec,secName,"MyValue3",str,sizeof(str),0))     { printf("MyValue3 = [%s]\n",str); }
    printf("\n");
    sSec = next; //parse next section, next will be null if no more sections to parse
}