代码注释分离

本方法适用于分离C语言风格的注释。

> gcc parse.c -o parse

> ./parse -s parse.c

源文件parse.c

#include <stdio.h>
#include <string.h>
#define CODE_FILE "code_file.txt"
#define COMMENT_FILE    "comment_file.txt"

void split(const char* filename)
{
    FILE* fin = fopen(filename, "r");
    FILE* fcode = fopen(CODE_FILE, "w");
    FILE* fcomm = fopen(COMMENT_FILE, "w");
    //测试数据
    "123456测试数据";
    /*这是测试数据*/
    "````````````\"" "1111111111";
    while (!feof(fin))
    {
        char c = fgetc(fin);
        if (c == EOF) break;

        if (c == '"' || c == '\'')
        {
            char t = c;
            fputc(c, fcode);
            while ((c = fgetc(fin)) != EOF && c != t)
            {
                fputc(c, fcode);
                if (c == '\\')
                {
                    if ((c = fgetc(fin)) != EOF)
                        fputc(c, fcode);
                }
            }
            if (c == t) fputc(c, fcode);
            else break;
        }/***********************/
        else if (c == '/')
        {/*

        换行测试
        灭哈哈
        */
            char c1 = fgetc(fin);
            if (c1 == '*')
            {
                fprintf(fcomm, "@%d@%d@\n", ftell(fcode), 0);
                fprintf(fcomm, "/*");
                c1 = 0;
                while (1)
                {
                    while (c1 != '*' && c1 != EOF)
                    {
                        if (c1) fputc(c1, fcomm);
                        c1 = fgetc(fin);
                    }
                    if (c1 == EOF) break;
                    c1 = fgetc(fin);
                    if (c1 == '/' || c1 == EOF) break;
                    else fputc('*', fcomm);
                }
                fprintf(fcomm, "*/\n");
            }
            else if (c1 == '/')
            {
                fprintf(fcomm, "@%d@%d@\n", ftell(fcode), 1);
                fprintf(fcomm, "//");
                while ((c1 = fgetc(fin)) != EOF && c1 != '\n') fputc(c1, fcomm);
                fprintf(fcomm, "\n");
            }
            else
            {
                fprintf(fcode, "%c%c", c, c1);
            }
        }
        else
        {/*飞雪

        //
        //测试
        //
        */
            fputc(c, fcode);
        }
    }
    fclose(fcomm);
    fclose(fcode);
    fclose(fin);
}
//测试一下
void merge(const char* filename)
{
    FILE* fout = fopen(filename, "w");
    FILE* fcode = fopen(CODE_FILE, "r");
    FILE* fcomm = fopen(COMMENT_FILE, "r");

    char temp[256] = {0};
    while (!feof(fcomm))
    {
        int pos, type;
        char c;
        if (fscanf(fcomm, "@%d@%d@\n", &pos, &type) == EOF) break;
        while (ftell(fcode) != pos)
        {
            c = fgetc(fcode);
            fputc(c, fout);
        }
        if (type == 1)
        {
            while ((c = getc(fcomm)) != '\n') fputc(c, fout);
            fputc('\n', fout);
        }
        else
        {
            char c = 0;
            while (1)
            {
                while (c != '*' && c != EOF)
                {
                    if (c) fputc(c, fout);
                    c = fgetc(fcomm);
                }
                if (c == EOF) break;
                c = fgetc(fcomm);
                if (c == '/' || c == EOF) break;
                else fputc('*', fout);
            }
            fprintf(fout, "*/");
            fgetc(fcomm);
        }
    }
    while (!feof(fcode))
    {
        char c = fgetc(fcode);
        if (c == EOF) break;
        fputc(c, fout);
    }
    fclose(fcomm);
    fclose(fcode);
    fclose(fout);
}
int main(int cnt, char* args[])
{
    if (cnt != 3)
    {
        puts("usage:\n -s filename\n -m filename\n");
        return 1;
    }
    if (args[1][0] == '-' && args[1][1] == 's')
    {
        split(args[2]);
    }
    else if (args[1][0] == '-' && args[1][1] == 'm')
    {
        merge(args[2]);
    }
    else
    {
        puts("usage:\n -s filename\n -m filename\n");
        return 1;
    }
    return 0;
}
//测试数据
    //"123456测试数据";
    /*这是测试数据*/

转载自：http://www.cnblogs.com/chengxin1982/archive/2009/01/18/1377781.html