#include "stdafx.h"
#include <stdio.h>
#include <string.h>
char content[1000][5000];
char filename[512];
int linecnt;
void display()
{
int n;
scanf("%d", &n);
if (n > linecnt)
printf("第%d行不存在!", n);
else
printf("%s", content[n - 1]);
}
void del()
{
int n;
scanf("%d", &n);
if (n > linecnt)
printf("第%d行不存在!", n);
else
{
for (int i = n - 1; i < linecnt - 1; i++)
{
strcpy(content[i], content[i + 1]);
}
linecnt--;
}
}
void cucd(int type)
{
int n, m;
scanf("%d %d", &n, &m);
if (type == 2) m = m + 1;
for (int i = linecnt; i > m - 1; i--)
{
strcpy(content[i], content[i - 1]);
}
if (n >= m) n = n + 1;
strcpy(content[m - 1], content[n - 1]);
linecnt++;
}
void save()
{
FILE *fp;
fp = fopen(filename, "w+");
for (int i = 0; i < linecnt; i++)
fputs(content[i], fp);
fclose(fp);
}
void replace(char * src, char * find, char * replacewith, int start = 0, int n = -1)
{
if (n == -1) n = strlen(src);
int fn = strlen(find);
if (fn < 1) return;
if (start < 0) return;
if (start + n > strlen(src)) return;
if (strcmp(find, replacewith) == 0) return;
char temp[5000];
for (int i = 0; i < start; i++)
temp[i] = src[i];
int curr = start;
for (int i = start; i <= start + n - fn; i++)
{
int found = 1;
for (int j = 0; j < fn; j++)
{
if (src[i + j] != find[j]) { found = 0; break; }
}
if (found)
{
for (int j = 0; j < strlen(replacewith); j++)
{
temp[curr + j] = replacewith[j];
}
curr = curr + strlen(replacewith);
i = i + fn - 1;
}
else
{
temp[curr] = src[i];
curr++;
}
}
for (int i = start + n - fn + 1; i < strlen(src); i++)
{
temp[curr++] = src[i];
}
temp[curr] = '\0';
strcpy(src, temp);
}
void ra()
{
char s1[100];
char s2[100];
scanf("%s %s", s1, s2);
for (int i = 0; i < linecnt; i++)
replace(content[i], s1, s2);
}
void r()
{
int x;
int y;
int n;
char s1[100];
char s2[100];
scanf("%d %d %d", &x, &y, &n);
scanf("%s %s", s1, s2);
replace(content[x - 1], s1, s2, y, n);
}
void dastr()
{
char str[100];
scanf("%s", str);
for (int i = 0; i < linecnt; i++)
replace(content[i], str, "");
}
void dstr()
{
int x;
int y;
int n;
char str[100];
scanf("%d %d %d", &x, &y, &n);
scanf("%s", str);
replace(content[x - 1], str, "", y - 1, n);
}
void ins()
{
int x;
int y;
char str[100];
scanf("%d %d", &x, &y);
scanf("%s", str);
char temp[5000];
int curr = 0;
for (int i = 0; i < y - 1; i++)
temp[curr++] = content[x - 1][i];
for (int i = 0; i < strlen(str); i++)
temp[curr++] = str[i];
for (int i = y; i < strlen(content[x - 1]); i++)
temp[curr++] = content[x - 1][i];
temp[curr] = '\0';
strcpy(content[x - 1], temp);
}
int main()
{
int choice;
start:
printf("文本编辑器\n1 新建文件\n2 编辑文件\n请选择:");
scanf("%d", &choice);
if (choice == 1)
printf("请输入新文件的文件名:");
else if (choice == 2)
printf("请输入打开文件的文件名:");
else
goto start;
scanf("%s", &filename[0]);
FILE *file;
if (choice == 1)
{
if (fopen(filename, "r") == NULL)
{
file = fopen(filename, "w");
fclose(file);
}
else
{
fclose(file);
printf("文件已经存在\n");
goto start;
}
}
else
{
if ((file = (fopen(filename, "r"))) != NULL)
{
linecnt = 0;
while (1)
{
if (fgets(&content[linecnt++][0], 5000, file) == NULL)
break;
}
fclose(file);
}
else
{
printf("文件不存在\n");
goto start;
}
}
char cmd[10];
while (1)
{
printf("L n 显示第n行\n");
printf("D n 删除第n行\n");
printf("CU n m 将第n行复制到第m行上面\n");
printf("CD n m 将第n行复制到第m行上面\n");
printf("RA str1 str2 将文件中所有str1用str2替换\n");
printf("R x y n str1 str2 将文件中第x行第y列开始的n个字符中的所有str1用str2替换\n");
printf("I x y str 在第x行,第y列字符前插入str\n");
printf("DAStr str 删除文件中的所有str\n");
printf("DStr x y n str 删除文件中的第x行,第y列开始的n个字符中的所有str\n");
printf("SAVE 保存退出\n");
printf("EXIT 放弃修改直接退出\n");
scanf("%s", cmd);
if (strcmp("L", cmd) == 0)
{
display();
}
else if (strcmp("D", cmd) == 0)
{
del();
}
else if (strcmp("CU", cmd) == 0)
{
cucd(1);
}
else if (strcmp("CD", cmd) == 0)
{
cucd(2);
}
else if (strcmp("RA", cmd) == 0)
{
ra();
}
else if (strcmp("R", cmd) == 0)
{
r();
}
else if (strcmp("I", cmd) == 0)
{
ins();
}
else if (strcmp("DASTR", cmd) == 0)
{
dastr();
}
else if (strcmp("DSTR", cmd) == 0)
{
dstr();
}
else if (strcmp("SAVE", cmd) == 0)
{
save();
break;
}
else if(strcmp("EXIT", cmd) == 0)
{
break;
}
}
return 0;
}