Xcode下用函数操作文本文件

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#include <stdio.h>#include <string.h>#include <sys/stat.h>#include <fcntl.h>#include <sys/mman.h>#include <unistd.h>#include <sys/dir.h>#define  NULLCHAR  32       //ascii字符的32表示空字符//删除注释.path:文件路径全名void delComments(const char *path);//判断是否为目录.path:文件路径全名bool isDir(const char* path);//删除文件夹下所有.c, cpp, .h的注释void delComInDir(const char *path);//删除文件夹下所有.c, cpp, .h的注释，这是递归方法void delComInDir(const char *path, int recursive);//取文件名的后缀名const char *getSuffix(const char *path);//取子串char* substr(const char*str, unsigned long start, unsigned long end);//删除注释类型namespace CommentType{    //删除"特定函数".funStr:函数名称    void delFun(const char *funStr, unsigned char *buffer, unsigned long size);        //删除”特定单行字符”注释.str:字符    void delOtherSigle(const char *funStr, unsigned char *buffer, unsigned long size);        //删除"/**/"型注释    void delMuliCom(unsigned char *buffer, unsigned long size);        //删除"//"型注释    void delSigleCom(unsigned char *buffer, unsigned long size);}int main(int argc, const char * argv[]){    delComInDir("/Users/zctech/Downloads/temp/hjsg/Classes");    return 0;}//判断是否为目录.path:文件路径全名bool isDir(const char* path){    struct stat st;    lstat(path, &st);    return 0 != S_ISDIR(st.st_mode);}//删除文件夹下所有.c, cpp, .h的注释void delComInDir(const char *path){    unsigned long len;    char temp[1024 * 512];    //去掉末尾的'/'    len = strlen(path);    strcpy(temp, path);    if(temp[len - 1] == '/') temp[len -1] = '\0';        if(isDir(temp))    {        //处理目录        int recursive = 1;        delComInDir(temp, recursive);    }    else   //输出文件    {        //找出.h和.cpp文件        if(0 == strcmp("h", getSuffix(temp)) || 0 == strcmp("cpp", getSuffix(temp)) || 0 == strcmp("c", getSuffix(temp)))        {            delComments(temp);            printf("%s\n", temp);        }            }    }//遍历文件夹de递归函数void delComInDir(const char *path, int recursive){    DIR *pdir;    struct dirent *pdirent;    char temp[256];    pdir = opendir(path);    if(pdir)    {        while((pdirent = readdir(pdir)))        {            //跳过"."和".."            if(strcmp(pdirent->d_name, ".") == 0               || strcmp(pdirent->d_name, "..") == 0)                continue;            sprintf(temp, "%s/%s", path, pdirent->d_name);                        //当temp为目录并且recursive为1的时候递归处理子目录            if(isDir(temp) && recursive)            {                delComInDir(temp, recursive);            }            else            {                //找出.h和.cpp文件                if(0 == strcmp("h", getSuffix(temp)) || 0 == strcmp("cpp", getSuffix(temp)) || 0 == strcmp("c", getSuffix(temp)))                {                    delComments(temp);                    printf("%s\n", temp);                }            }        }    }    else    {        printf("opendir error:%s\n", path);    }    closedir(pdir);}//删除注释.path:文件名void delComments(const char *path){        int fd = open(path, O_RDWR);        //获取文件大小    struct stat sb;    fstat(fd, &sb);        unsigned char *start = (unsigned char *)mmap(NULL, sb.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);    if(start == MAP_FAILED) /* 判断是否映射成功 */    {        printf("映射失败，文件过大或者没有权限");        return;    }    CommentType::delSigleCom(start, sb.st_size);    CommentType::delMuliCom(start, sb.st_size);    CommentType::delFun(" ZCLOGI", start, sb.st_size);    CommentType::delOtherSigle("#pragma", start, sb.st_size);    close(fd);    munmap(start, sb.st_size); /* 解除映射 */    }//求子串char* substr(const char*str, unsigned long start, unsigned long end){    unsigned long n = end - start;    static char stbuf[1024 * 512];    strncpy(stbuf, str + start, n);    stbuf[n] = 0;                           //字串最后加上0    return stbuf;}//取文件名的后缀名const char *getSuffix(const char *path){    char *ptr;    long pos;    ptr = strrchr(path, '.');    //最后一个出现c的位置    if(NULL == ptr)    {        return "";    }    pos = ptr - path;             //用指针相减 求得索引        return substr(path, pos + 1, strlen(path));}//删除"//"型注释void CommentType::delSigleCom(unsigned char *buffer, unsigned long size){    unsigned long i = 0;    bool isCom = false;    bool isStr = false;    while (i < size)    {        if(!isStr && '/' == *(buffer + i) && '/' == *(buffer + i + 1))        {            isCom = true;        }        else if(!isStr && '\n' == *(buffer + i))        {            isCom = false;        }        else if(!isCom && !isStr && '\"' == *(buffer + i))        {            isStr = true;        }        else if(!isCom && isStr && '\"' == *(buffer + i))        {            isStr = false;        }                //移除注释        if (isCom && !isStr)        {            *(buffer + i) = 32;        }                i++;    }}//删除"/**/"型注释void CommentType::delMuliCom(unsigned char *buffer, unsigned long size){    //判断是否为 【/**/】 型注释, 注意当是字符串的时候不替换    unsigned long i = 0;    bool isCom = false;    bool isStr = false;        while (i < size)    {        if(!isStr && '/' == *(buffer + i) && '*' == *(buffer + i + 1))        {            isCom = true;        }        else if(!isStr && '*' == *(buffer + i) && '/' == *(buffer + i + 1))        {            isCom = false;            *(buffer + i) = *(buffer + i + 1) = 32;        }        else if(!isCom && !isStr && '\"' == *(buffer + i))        {            isStr = true;        }        else if(!isCom && isStr && '\"' == *(buffer + i))        {            isStr = false;        }                //移除注释        if (isCom && !isStr)        {            *(buffer + i) = 32;        }        i++;    }}//删除”特定单行字符”注释.str:字符void CommentType::delOtherSigle(const char *funStr, unsigned char *buffer, unsigned long size){    //判断是否为#pragma mark注释    unsigned long i = 0;    bool isCom = false;    bool isStr = false;        while (i < size)    {        if(!isStr && 0 == strcmp(funStr, substr((char *)buffer, i, i + strlen(funStr)))           )        {            isCom = true;        }        else if(!isStr && '\n' == *(buffer + i))        {            isCom = false;        }        else if(!isCom && !isStr && '\"' == *(buffer + i))        {            isStr = true;        }        else if(!isCom && isStr && '\"' == *(buffer + i))        {            isStr = false;        }                //移除注释        if (isCom && !isStr)        {            *(buffer + i) = 32;        }                i++;    }    }//删除"特定函数".funStr:函数名称void CommentType::delFun(const char *funStr, unsigned char *buffer, unsigned long size){        //判断是否为ZCLOGI函数注释    unsigned long i = 0;    bool isStr = false, isFun = false;    int left = 0, right = 0;    //左右括号        while (i < size)    {        if(!isStr && 0 == strcmp(funStr, substr((char *)buffer, i, i + strlen(funStr)))                      )        {            isFun = true;        }        else if(!isFun && !isStr && '\"' == *(buffer + i))        {            isStr = true;        }        else if(!isFun && isStr && '\"' == *(buffer + i))        {            isStr = false;        }                        if(isFun && '(' == *(buffer + i))        {            left++;        }        else if(isFun && ')' == *(buffer + i))        {            right++;            if(left == right)            {                *(buffer + i) = NULLCHAR;                isFun = false;            }        }                //移除注释        if (isFun && !isStr)        {            *(buffer + i) = NULLCHAR;        }                i++;    }    }
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