替换指定文本里面的字符串！
本帖最后由 Cool_Breeze 于 2020-3-31 20:52 编辑a.txt文件为原始文件
The night falls gently. And you are not here. I missing you more and more and I start getting worried as
I stare at the door just waiting for you to surprise me with your arrival at any moment.
Sweet delusion... you are so far away right now that all I can ask for is that time moves faster...
b.txt 第一列为指定字符串，第二列为替换后的字符串
is,!@#$%^&*
good,!@#$%^&*
are,!@#$%^&*
the,!@#$%^&*
ha ha,!@#$%^&*
some,!@#$%^&*
get,!@#$%^&*
has,!@#$%^&*
more,!@#$%^&*
bad,!@#$%^&*
按b.txt中的第一列把a.txt相应位置替换为b.txt第二列
结果为：
The night falls gently. And you !@#$%^&* not here. I m!@#$%^&*sing you !@#$%^&* and more and I start !@#$%^&*ting worried as
I st!@#$%^&* at !@#$%^&* door just waiting for you to surpr!@#$%^&*e me with your arrival at any moment.
Sweet delusion... you !@#$%^&* so far away right now that all I can ask for !@#$%^&* that time moves faster...
源代码如下：
#if 0
By Cool_Breeze
Dev-C++ 5.11
.c
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <malloc.h>
FILE* filepointer(const char *file,const char *mode);
void insert_str(char* str,char* flag,size_t sl,size_t fn);
void replace_gtr_str(char* str,char* flag,size_t sl,size_t fl);
void replace_lss_str(char* str,char* flag,size_t subl,size_t fl);
void replace_equ_str(char* str,char* flag,size_t fl);
void scantext(FILE* fp, size_t* arr);
void read_str(FILE* fp, char* sou, char* sub,size_t len);
//字符串大小
#define Max 1024
int main(int argc,char **argv)
{
FILE* fpi=filepointer("a.txt","rb");
FILE* fpo=filepointer("result.txt","wb");
FILE* fp=filepointer("b.txt","rb");
static char str;
static size_t text_s;//替换行数，列大小
scantext(fp,text_s);
char* soustr=(char*)calloc(text_s,sizeof(char)*text_s);
char* substr=(char*)calloc(text_s,sizeof(char)*text_s);
read_str(fp, soustr, substr,text_s);
register size_t i=0;
register size_t len=text_s;
char *p=NULL;
while (fgets(str,Max,fpi))
{
for (i=0;i<text_s;i++)
{
p=str;
p=strstr(p,soustr+i*len);
if (p == NULL) continue;
if (strlen(soustr+i*len) < strlen(substr+i*len)) replace_lss_str(p,substr+i*len,strlen(soustr+i*len),strlen(substr+i*len));
else if (strlen(soustr+i*len) > strlen(substr+i*len)) replace_gtr_str(p,substr+i*len,strlen(soustr+i*len),strlen(substr+i*len));
else if (strlen(soustr+i*len) == strlen(substr+i*len)) replace_equ_str(p,substr+i*len,strlen(substr+i*len));
}
fprintf(fpo,"%s",str);
}
fclose(fpi);
fclose(fpo);
free(soustr);
free(substr);
fclose(fp);
return 0;
}
FILE* filepointer(const char *file,const char *mode)
{
FILE *fp;
if (!(fp = fopen(file,mode)))
{
printf("open fail! [%s]:%s\n",file,strerror(errno));
exit(EXIT_FAILURE);
}
return fp;
}
//获取文本高度，宽度以便于创建动态空间
void scantext(FILE* fp, size_t* arr)
{
rewind(fp);
char temp={"\0"};
char *delp=",";
char *ptr=NULL;
register size_t y=0;
register size_t j=0, k=0;
while (fgets(temp,Max,fp))
{
y++;
j=strlen(temp);//一行的长度
ptr=strstr(temp,delp);
k=strlen(ptr);//第二列长度;
j-=k;//第一列的长度;
arr = arr < (j > k ? j:k) ? (j > k ? j:k):arr;//记录最大值
}
arr = y,arr+=1;
}
void read_str(FILE* fp, char* sou, char* sub,size_t len)
{
rewind(fp);
char temp={"\0"};
char *p=NULL;
register size_t i=0;
register size_t j=0;
register size_t k=0;
while (fgets(temp,Max,fp))
{
j=strlen(temp);//总
p=strstr(temp,",");
k=strlen(p);//第2列
memmove(sou+i*len,temp,j-k);
memmove(sub+i*len,p+1,k);
for (k-=2;;k--)
if (*(sub+i*len+k) == 0xA || *(sub+i*len+k) == 0xD)
*(sub+i*len+k) = '\0';//去掉换行和回车
else
break;
i++;
}
}
/*
在字符串开始插入指定字符串
str原字符串的起点
flag 指定字符串
sl 原字符串长度
fl 指定字符串长度
*/
void insert_str(char* str,char* flag,size_t sl,size_t fl)
{
memmove(str+fl,str,sl+1);//+1存放结束符'\0'
memmove(str,flag,fl);
}
/*
被替换字符串长度大于替换字符字符串长度
explanation:
str=abcd,flag=abc
str原字符串的起点
flag 替换的字符串
sl 被替换字符长度
fl 替换字符串长度
*/
void replace_gtr_str(char* str,char* flag,size_t sl,size_t fl)
{
memmove(str+fl,str+sl,sl+1);
memmove(str,flag,fl);
}
/*
被替换字符长度小于替换字符串长度
删除被替换字符串
explanation:
str=abc,flag=abcd
str原字符串的起点
flag 替换的字符串
subl 被替换字符长度
fl 替换字符串长度
*/
void replace_lss_str(char* str,char* flag,size_t subl,size_t fl)
{
register size_t temp=strlen(str)-subl;//剩余字符串长度
memmove(str+fl,str+subl,temp+1);
memmove(str,flag,fl);
}
/*
被替换字符串与指定字符串相等
explanation:
str=abc,flag=abc
str原字符串的起点
flag 替换的字符串
fl 替换字符长度
*/
void replace_equ_str(char* str,char* flag,size_t fl)
{
memmove(str,flag,fl);
}
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