Util工具类功能设计与类设计(http模块一)

���录

类功能

类定义

类实现

编译测试

Split分割字符串测试

ReadFile读取测试

WriteFile写入测试

UrlEncode编码测试

UrlDecode编码测试

StatuDesc状态码信息获取测试

ExtMime后缀名获取文件mime测试

IsDirectory&IsRegular测试

VaildPath请求路径有效性判断测试

总编译

补充

trunc截断

编码格式的规定

md5sum校验和比较两个文件是否一致

新增gdb调试手法

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类功能

类定义

#include "../server.hpp"class Util{    public :        // 字符串分割函数        size_t Split();        // 读取文件内容        static bool ReadFile();        // 向文件写入数据        static bool WriteFile();        // URL编码        static bool UrlEncode();        // URL解码        static bool UrlDecode();        // 响应状态码的描述信息获取        static std::string StatuDesc();        // 根据文件后缀名获取文件mime        static std::string ExtMime();        // 判断一个文件是否是一个目录        static bool IsDirectory();        // 判断一个文件是否是一个普通文件        static bool IsRegular();        // http请求的资源路径有效性判断        static bool VaildPath();};

类实现

#include "../server.hpp"#include #include class Util{public:    // 字符串分割函数    static size_t Split(const std::string &src, const std::string &sep, std::vector *arry)    {        size_t offset = 0;        // 有10个字符,offset是查找的起始位置,范围应该是0~9,offset==10就代表已经越界了,返回查找的位置        while (offset push_back(src.substr(offset));                return arry->size();            }            if (pos == offset)            {                offset = pos + sep.size();                continue; // 当前字符串是一个空串,没有内容            }            arry->push_back(src.substr(offset, pos - offset));            offset = pos + sep.size();        }        return arry->size();    }    // 读取文件的所有内容,将读取到的内容放到一个容器中    static bool ReadFile(const std::string &filename, std::string *buf)    {        std::ifstream ifs(filename, std::ios::binary); // 以二进制的方式读取        if (ifs.is_open() == false)        {            printf("OPEN %s FILE FAILED!!", filename.c_str());            return false;        }        size_t fsize = 0;            // 偏移量        ifs.seekg(0, ifs.end);       // 跳转读写位置到末尾        fsize = ifs.tellg();         // 获取当前读写位置相对于起始位置的偏移量,从末尾偏移量刚好就是文件大小        ifs.seekg(0, ifs.beg);       // 跳转到起始位置        buf->resize(fsize);          // 开辟文件大小的空间        ifs.read(&(*buf)[0], fsize); // c_str()返回的是一个const,所以不行        if (ifs.good() == false)        {            printf("READ %s FILE FAILED!!", filename.c_str());            ifs.close();            return false;        }        ifs.close();        return true;    }    // 向文件写入数据    static bool WriteFile(const std::string &filename, const std::string &buf)    {        std::ofstream ofs(filename, std::ios::binary | std::ios::trunc);        if (ofs.is_open() == false)        {            printf("OPEN %s FILE FAILED!!", filename.c_str());            return false;        }        ofs.write(buf.c_str(), buf.size());        if (ofs.good() == false)        {            ERR_LOG("WRITE %s FILE FAILED!", filename.c_str());            ofs.close();            return false;        }        ofs.close();        return true;    }    // URL编码，避免URL中资源路径与查询字符串中的特殊字符与HTTP请求中特殊字符产生歧义    // 编码格式：将特殊字符的ascii值，转换为两个16进制字符，前缀%   C++ -> C%2B%2B    // 不编码的特殊字符： RFC3986文档规定 . - _ ~ 字母，数字属于绝对不编码字符    // RFC3986文档规定，编码格式 %HH    // W3C标准中规定，查询字符串中的空格，需要编码为+， 解码则是+转空格    static std::string UrlEncode(const std::string url, bool convert_space_to_plus)    {        std::string res;        for (auto &c : url)        {            if (c == '.' || c == '-' || c == '_' || c == '~' || isalnum(c))            {                res += c;                continue;            }            if (c == ' ' && convert_space_to_plus == true)            {                res += '+';                continue;            }            // 剩下的字符都是需要编码成为 %HH 格式            char tmp[4] = {0};            // snprintf 与 printf比较类似,都是格式化字符串,只不过一个是打印,一个是放到一块空间中            snprintf(tmp, 4, "%%%02X", c);            res += tmp;        }        return res;    }    static char HEXTOI(char c)    {        if (c >= '0' && c = 'a' && c = 'A' && c 2b  %2b->2 second;        }        return "Unknow";    }    // 根据文件后缀名获取文件mime    static std::string ExtMime(const std::string &filename)    {        std::unordered_map _mime_msg = {            {".aac", "audio/aac"},            {".abw", "application/x-abiword"},            {".arc", "application/x-freearc"},            {".avi", "video/x-msvideo"},            {".azw", "application/vnd.amazon.ebook"},            {".bin", "application/octet-stream"},            {".bmp", "image/bmp"},            {".bz", "application/x-bzip"},            {".bz2", "application/x-bzip2"},            {".csh", "application/x-csh"},            {".css", "text/css"},            {".csv", "text/csv"},            {".doc", "application/msword"},            {".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},            {".eot", "application/vnd.ms-fontobject"},            {".epub", "application/epub+zip"},            {".gif", "image/gif"},            {".htm", "text/html"},            {".html", "text/html"},            {".ico", "image/vnd.microsoft.icon"},            {".ics", "text/calendar"},            {".jar", "application/java-archive"},            {".jpeg", "image/jpeg"},            {".jpg", "image/jpeg"},            {".js", "text/javascript"},            {".json", "application/json"},            {".jsonld", "application/ld+json"},            {".mid", "audio/midi"},            {".midi", "audio/x-midi"},            {".mjs", "text/javascript"},            {".mp3", "audio/mpeg"},            {".mpeg", "video/mpeg"},            {".mpkg", "application/vnd.apple.installer+xml"},            {".odp", "application/vnd.oasis.opendocument.presentation"},            {".ods", "application/vnd.oasis.opendocument.spreadsheet"},            {".odt", "application/vnd.oasis.opendocument.text"},            {".oga", "audio/ogg"},            {".ogv", "video/ogg"},            {".ogx", "application/ogg"},            {".otf", "font/otf"},            {".png", "image/png"},            {".pdf", "application/pdf"},            {".ppt", "application/vnd.ms-powerpoint"},            {".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},            {".rar", "application/x-rar-compressed"},            {".rtf", "application/rtf"},            {".sh", "application/x-sh"},            {".svg", "image/svg+xml"},            {".swf", "application/x-shockwave-flash"},            {".tar", "application/x-tar"},            {".tif", "image/tiff"},            {".tiff", "image/tiff"},            {".ttf", "font/ttf"},            {".txt", "text/plain"},            {".vsd", "application/vnd.visio"},            {".wav", "audio/wav"},            {".weba", "audio/webm"},            {".webm", "video/webm"},            {".webp", "image/webp"},            {".woff", "font/woff"},            {".woff2", "font/woff2"},            {".xhtml", "application/xhtml+xml"},            {".xls", "application/vnd.ms-excel"},            {".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},            {".xml", "application/xml"},            {".xul", "application/vnd.mozilla.xul+xml"},            {".zip", "application/zip"},            {".3gp", "video/3gpp"},            {".3g2", "video/3gpp2"},            {".7z", "application/x-7z-compressed"},        };        // a.b.txt 获取文件名        size_t pos = filename.find_last_of('.');        if (pos != std::string::npos)            return "application/octet-stream"; // 没找着，表示文件是一个二进制文件        // 根据扩展名,获取mime        std::string ext = filename.substr(pos);        auto it = _mime_msg.find(ext);        if (it == _mime_msg.end())            return "application/octet-stream";        return it->second;    }    // 判断一个文件是否是一个目录    static bool IsDirectory(const std::string &filename)    {        struct stat st;        int ret = stat(filename.c_str(), &st);        if (ret    
编译测试
 
各个函数依次测试功能
 
Split分割字符串测试
   
ReadFile读取测试
   
WriteFile写入测试
   
UrlEncode编码测试
   
UrlDecode编码测试
     
StatuDesc状态码信息获取测试
   
ExtMime后缀名获取文件mime测试
   
IsDirectory&IsRegular测试
   
VaildPath请求路径有效性判断测试
   
总编译
  
无异常，符合预期
  
测试案例代码
 
int main(){    std::cout