- 创建全局的二级指针
1 char ** g_pp;//全局的二级指针
- 获取数据有多少行
1 //获取行数 2 int getimax() 3 { 4 int hang = -1; 5 FILE *pf = fopen(path, "r");//读文件打开路径 6 if (pf == NULL) 7 { 8 printf("文件打开失败"); 9 return -1; 10 } 11 else 12 { 13 hang = 0; 14 while (!feof(pf))//到了文件末尾返回1，没有返回0 15 { 16 char readstr[1024] = { 0 }; 17 18 fgets(readstr, 1024, pf);//读取一行 19 20 hang++;//自增 21 22 } 23 fclose(pf);//关闭 24 return hang; 25 } 26 } - 定义行数
1 int imax = 16151574;//标示有多少行
- 载入内存
1 void loadfromfile() 2 { 3 4 g_pp = (char **)malloc(sizeof(char*)*imax); //分配指针数组 5 memset(g_pp, ‘\0‘, sizeof(char*)*imax);//内存清零 6 7 8 FILE *pf = fopen(path, "r");//读文件打开路径 9 if (pf == NULL) 10 { 11 printf("文件打开失败"); 12 return -1; 13 } 14 else 15 { 16 for (int i = 0; i < imax; i++) 17 { 18 char str[1024] = { 0 }; 19 fgets(str, 1024, pf);//按行读取 20 str[1024 - 1] = ‘\0‘; 21 int strlength = strlen(str); 22 23 24 g_pp[i] = malloc(sizeof(char)*(strlength + 1));//处理/0 25 26 if (g_pp[i] != NULL) 27 { 28 strcpy(g_pp[i], str);//拷贝到分配的内存 29 } 30 } 31 fclose(pf);//关闭 32 } 33 } - 查询并写入到文件
void search(char *str) { char strpath[100] = { 0 }; sprintf(strpath, "I:\\%s.txt", str); FILE *pf = fopen(strpath, "w");//写的模式打开 if (g_pp != NULL) { for (int i = 0; i < imax; i++) { if (g_pp[i] != NULL) { char *p = strstr(g_pp[i], str);//找到返回地址，找不到返回null if (p != NULL) { puts(g_pp[i]);//打印 fputs(g_pp[i], pf);//输出到文件 } } } } fclose(pf); } - main
1 loadfromfile(); 2 printf("Content-type:text/html\n\n");//换行 3 4 system("mkdir 1"); 5 6 char szpost[256] = { 0 }; 7 gets(szpost); 8 printf("%s", szpost); 9 10 char*p1 = strchr(szpost, ‘&‘); 11 if (p1 != NULL) 12 { 13 *p1 = ‘\0‘; 14 } 15 printf("<br>%s", szpost + 5); 16 printf("<br>%s", change(szpost + 5)); 17 18 char *p2 = strchr(p1 + 1, ‘&‘); 19 if (p2 != NULL) 20 { 21 *p2 = ‘\0‘; 22 } 23 printf("<br>%s", p1 + 6); 24 printf("<br>%s", change(p1 + 6)); 25 26 search(szpost + 5);//检索 - cgi格式转换
1 char* change(char *str) 2 { 3 char *tempstr = malloc(strlen(str) + 1); 4 int x = 0, y = 0; 5 char assii_1, assii_2; 6 while (tempstr[x]) 7 { 8 if ((tempstr[x] = str[y]) == ‘%‘) 9 { 10 //y+1 y+2 11 if (str[y + 1] >= ‘A‘) 12 { 13 assii_1 = str[y + 1] - 55; 14 15 } 16 else 17 { 18 assii_1 = str[y + 1] - 48; 19 } 20 if (str[y + 2] >= ‘A‘) 21 { 22 assii_2 = str[y + 2] - 55; 23 } 24 else 25 { 26 assii_2 = str[y + 2] - 48; 27 } 28 tempstr[x] = assii_1 * 16 + assii_2; 29 30 y += 2; 31 32 } 33 x++; 34 y++; 35 } 36 tempstr[x] = ‘\0‘; 37 38 return tempstr; 39 }
完整代码
1 #define _CRT_SECURE_NO_WARNINGS
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <string.h>
5 #include<memory.h>
6 #include <Windows.h>
7 #define path "kaifang.txt"
8
9
10
11
12
13 char ** g_pp;//全局的二级指针
14 int imax = 16151574;//标示有多少行
15
16 //获取行数
17 int getimax()
18 {
19 int hang = -1;
20 FILE *pf = fopen(path, "r");//读文件打开路径
21 if (pf == NULL)
22 {
23 printf("文件打开失败");
24 return -1;
25 }
26 else
27 {
28 hang = 0;
29 while (!feof(pf))//到了文件末尾返回1，没有返回0
30 {
31 char readstr[1024] = { 0 };
32
33 fgets(readstr, 1024, pf);//读取一行
34
35 hang++;//自增
36
37 }
38 fclose(pf);//关闭
39 return hang;
40 }
41 }
42
43 char* change(char *str)
44 {
45 char *tempstr = malloc(strlen(str) + 1);
46 int x = 0, y = 0;
47 char assii_1, assii_2;
48 while (tempstr[x])
49 {
50 if ((tempstr[x] = str[y]) == ‘%‘)
51 {
52 //y+1 y+2
53 if (str[y + 1] >= ‘A‘)
54 {
55 assii_1 = str[y + 1] - 55;
56
57 }
58 else
59 {
60 assii_1 = str[y + 1] - 48;
61 }
62 if (str[y + 2] >= ‘A‘)
63 {
64 assii_2 = str[y + 2] - 55;
65 }
66 else
67 {
68 assii_2 = str[y + 2] - 48;
69 }
70 tempstr[x] = assii_1 * 16 + assii_2;
71
72 y += 2;
73
74 }
75 x++;
76 y++;
77 }
78 tempstr[x] = ‘\0‘;
79
80 return tempstr;
81 }
82
83 void loadfromfile()
84 {
85
86 g_pp = (char **)malloc(sizeof(char*)*imax); //分配指针数组
87 memset(g_pp, ‘\0‘, sizeof(char*)*imax);//内存清零
88
89
90 FILE *pf = fopen(path, "r");//读文件打开路径
91 if (pf == NULL)
92 {
93 printf("文件打开失败");
94 return -1;
95 }
96 else
97 {
98 for (int i = 0; i < imax; i++)
99 {
100 char str[1024] = { 0 };
101 fgets(str, 1024, pf);//按行读取
102 str[1024 - 1] = ‘\0‘;
103 int strlength = strlen(str);
104
105
106 g_pp[i] = malloc(sizeof(char)*(strlength + 1));//处理/0
107
108 if (g_pp[i] != NULL)
109 {
110 strcpy(g_pp[i], str);//拷贝到分配的内存
111 }
112 }
113 fclose(pf);//关闭
114 }
115 }
116
117 void search(char *str)
118 {
119 char strpath[100] = { 0 };
120 sprintf(strpath, "I:\\%s.txt", str);
121 FILE *pf = fopen(strpath, "w");//写的模式打开
122
123 if (g_pp != NULL)
124 {
125
126 for (int i = 0; i < imax; i++)
127 {
128 if (g_pp[i] != NULL)
129 {
130 char *p = strstr(g_pp[i], str);//找到返回地址，找不到返回null
131 if (p != NULL)
132 {
133 puts(g_pp[i]);//打印
134 fputs(g_pp[i], pf);//输出到文件
135 }
136 }
137 }
138 }
139 fclose(pf);
140 }
141
142
143
144 void main()
145 {
146
147 loadfromfile();
148 printf("Content-type:text/html\n\n");//换行
149
150 system("mkdir 1");
151
152 char szpost[256] = { 0 };
153 gets(szpost);
154 printf("%s", szpost);
155
156 char*p1 = strchr(szpost, ‘&‘);
157 if (p1 != NULL)
158 {
159 *p1 = ‘\0‘;
160 }
161 printf("<br>%s", szpost + 5);
162 printf("<br>%s", change(szpost + 5));
163
164 char *p2 = strchr(p1 + 1, ‘&‘);
165 if (p2 != NULL)
166 {
167 *p2 = ‘\0‘;
168 }
169 printf("<br>%s", p1 + 6);
170 printf("<br>%s", change(p1 + 6));
171
172 search(szpost + 5);//检索
173 }
原文地址：https://www.cnblogs.com/xiaochi/p/8455889.html
时间： 2024-11-06 01:47:30