如何统计一个文件的行数

 

static int file_stat_info(char *file, long *size, long *line, long *word, long *long_max)
...{
#define    TMP_BUF_SIZE    8192
    char buf[TMP_BUF_SIZE];
    int buf_size = TMP_BUF_SIZE;

    FILE *fp = NULL;
    long file_size = 0;

    long file_line = 0;
    long file_word = 0;
    long line_long = 0;

    int read_count = 0;
    int read_size = 0;

    int word_in = 0;
    int word_out = 0;

    int long_tmp = 0;

    int i,j;

    if (fp = fopen(file, "rb"))
    ...{
        fseek(fp, 0, SEEK_END);
        file_size = ftell(fp);//size
        rewind(fp);

        if (file_size > 0)
        ...{
            file_line = 1;//line

            read_count = file_size/buf_size;
            read_count++;
        }

        for (i = 0; i < read_count; i++)
        ...{
            read_size = fread(buf, sizeof(char), buf_size, fp);
            if (read_size > 0)
            ...{
                for (j = 0; j < read_size; j++)
                ...{
                    //line
                    if (' ' == buf[j]) file_line++;

                    //word
                    if (' ' == buf[j] || ' ' == buf[j] || ' ' == buf[j] || ' ' == buf[j])
                    ...{
                        if (word_in)
                        ...{
                            file_word++;
                            word_in = 0;
                        }
                    }
                    else
                    ...{
                        word_in = 1;
                    }

                    //long_max
                    if (' ' == buf[j] || ' ' == buf[j])
                    ...{
                        long_tmp = 0;
                    }
                    else
                    ...{
                        long_tmp++;
                        if (long_tmp > line_long) line_long = long_tmp;
                    }
                }
                if (word_in) file_word++;//word
                if (long_tmp > line_long) line_long = long_tmp;//long_max
            }
        }

        if (size && file_size >= 0) *size = file_size;
        if (line && file_line >= 0) *line = file_line;
        if (word && file_word >= 0) *word = file_word;
        if (long_max && line_long >= 0) *long_max = line_long;

        fclose(fp);

        return 0;
    }

    return -1;
}