回答編集履歴
1
追加
answer
CHANGED
|
@@ -6,4 +6,205 @@
|
|
|
6
6
|
・実行結果からおおその動きが分かりますので、さらにファイルをcpする際に必要そうな値の場所にもprintf文を入れます。
|
|
7
7
|
・cpに必要な情報が揃ったところで、次にdirとfileかを判断してる箇所に、ディレクトリ作成、ファイルのコピーを行うサブルーチンを加えます。（mkdirやcpはソースを持って来てサブルーチン化します。）
|
|
8
8
|
|
|
9
|
-
プログラムを修正する場合、こんな感じでやっております。
|
|
9
|
+
プログラムを修正する場合、こんな感じでやっております。
|
|
10
|
+
|
|
11
|
+
サンプルですのでご参考としてください。
|
|
12
|
+
```ｃ
|
|
13
|
+
#include <stdio.h>
|
|
14
|
+
#include <stdlib.h>
|
|
15
|
+
#include <string.h>
|
|
16
|
+
#include <unistd.h>
|
|
17
|
+
#include <dirent.h>
|
|
18
|
+
#include <sys/types.h>
|
|
19
|
+
#include <sys/stat.h>
|
|
20
|
+
#include <errno.h>
|
|
21
|
+
|
|
22
|
+
struct strbuf {
|
|
23
|
+
char *ptr;
|
|
24
|
+
size_t len;
|
|
25
|
+
};
|
|
26
|
+
|
|
27
|
+
void traverse(struct strbuf *buf);
|
|
28
|
+
void traverseSub(struct strbuf *buf, int first);
|
|
29
|
+
struct strbuf *strbuf_new(void);
|
|
30
|
+
void strbuf_realloc(struct strbuf *buf, size_t size);
|
|
31
|
+
|
|
32
|
+
void print_error(char *s){
|
|
33
|
+
fprintf(stderr, "%s: %s\n", s, strerror(errno));
|
|
34
|
+
}
|
|
35
|
+
|
|
36
|
+
void die (const char *s){
|
|
37
|
+
perror(s);
|
|
38
|
+
exit(1);
|
|
39
|
+
}
|
|
40
|
+
|
|
41
|
+
char dir1[256];
|
|
42
|
+
char dir2[256];
|
|
43
|
+
|
|
44
|
+
int ccp(char *frfile,char *tofile)
|
|
45
|
+
{
|
|
46
|
+
FILE* fpSrc;
|
|
47
|
+
FILE* fpDest;
|
|
48
|
+
char c;
|
|
49
|
+
|
|
50
|
+
fpSrc = fopen( frfile, "rb" );
|
|
51
|
+
if( fpSrc == NULL ){
|
|
52
|
+
exit( EXIT_FAILURE );
|
|
53
|
+
}
|
|
54
|
+
|
|
55
|
+
fpDest = fopen( tofile, "wb" );
|
|
56
|
+
if( fpDest == NULL ){
|
|
57
|
+
exit( EXIT_FAILURE );
|
|
58
|
+
}
|
|
59
|
+
|
|
60
|
+
while( 1 ){
|
|
61
|
+
/* バイナリデータとして 1Byteずつ読み込み、1Byteずつ書き込む */
|
|
62
|
+
fread( &c, sizeof(c), 1, fpSrc );
|
|
63
|
+
if( feof( fpSrc ) ){
|
|
64
|
+
break;
|
|
65
|
+
}
|
|
66
|
+
if( ferror( fpSrc ) ){
|
|
67
|
+
exit( EXIT_FAILURE );
|
|
68
|
+
}
|
|
69
|
+
fwrite( &c, sizeof(c), 1, fpDest );
|
|
70
|
+
}
|
|
71
|
+
|
|
72
|
+
if( fclose( fpDest ) == EOF ){
|
|
73
|
+
fputs( "ファイルクローズに失敗しました。\n", stderr );
|
|
74
|
+
exit( EXIT_FAILURE );
|
|
75
|
+
}
|
|
76
|
+
if( fclose( fpSrc ) == EOF ){
|
|
77
|
+
fputs( "ファイルクローズに失敗しました。\n", stderr );
|
|
78
|
+
exit( EXIT_FAILURE );
|
|
79
|
+
}
|
|
80
|
+
return 0;
|
|
81
|
+
}
|
|
82
|
+
|
|
83
|
+
int main(int argc, char *argv[]){
|
|
84
|
+
struct strbuf *pathbuf;
|
|
85
|
+
|
|
86
|
+
if(argc != 3){
|
|
87
|
+
fprintf(stderr, "Usage:cpdir dir1 dir2\n");
|
|
88
|
+
exit(1);
|
|
89
|
+
}
|
|
90
|
+
pathbuf = strbuf_new();
|
|
91
|
+
strbuf_realloc(pathbuf, strlen(argv[1]));
|
|
92
|
+
strcpy(pathbuf->ptr, argv[1]);
|
|
93
|
+
strcpy(dir1, argv[1]);
|
|
94
|
+
strcpy(dir2, argv[2]);
|
|
95
|
+
traverse(pathbuf);
|
|
96
|
+
exit(0);
|
|
97
|
+
}
|
|
98
|
+
|
|
99
|
+
void traverse(struct strbuf *pathbuf){
|
|
100
|
+
traverseSub(pathbuf, 1);
|
|
101
|
+
}
|
|
102
|
+
|
|
103
|
+
void traverseSub(struct strbuf *pathbuf, int first){
|
|
104
|
+
DIR *d;
|
|
105
|
+
struct dirent *ent;
|
|
106
|
+
struct stat st;
|
|
107
|
+
char to_name[2048];
|
|
108
|
+
|
|
109
|
+
// printf("traverseSub S\n");
|
|
110
|
+
if (first){
|
|
111
|
+
strcpy(to_name,dir2);
|
|
112
|
+
}else{
|
|
113
|
+
strcpy(to_name,dir2);
|
|
114
|
+
strcpy(to_name+strlen(dir2),pathbuf->ptr+strlen(dir1));
|
|
115
|
+
}
|
|
116
|
+
|
|
117
|
+
d = opendir(pathbuf->ptr);
|
|
118
|
+
if (!d) {
|
|
119
|
+
switch (errno){
|
|
120
|
+
case ENOTDIR:
|
|
121
|
+
return;
|
|
122
|
+
case ENOENT:
|
|
123
|
+
if(first){
|
|
124
|
+
die(pathbuf->ptr);
|
|
125
|
+
} else {
|
|
126
|
+
return;
|
|
127
|
+
}
|
|
128
|
+
case EACCES:
|
|
129
|
+
puts(pathbuf->ptr);
|
|
130
|
+
print_error(pathbuf->ptr);
|
|
131
|
+
return;
|
|
132
|
+
default:
|
|
133
|
+
perror(pathbuf->ptr);
|
|
134
|
+
exit(1);
|
|
135
|
+
}
|
|
136
|
+
}
|
|
137
|
+
//printf("Dir:%s \n", pathbuf->ptr);
|
|
138
|
+
//printf("Dir2:%s \n", to_name);
|
|
139
|
+
puts(pathbuf->ptr);
|
|
140
|
+
if (mkdir(to_name,0755) == 0){
|
|
141
|
+
printf("%s mkdir\n", to_name);
|
|
142
|
+
}
|
|
143
|
+
while(ent = readdir(d)){
|
|
144
|
+
if(strcmp(ent->d_name, ".") == 0)
|
|
145
|
+
continue;
|
|
146
|
+
if(strcmp(ent->d_name, "..") == 0)
|
|
147
|
+
continue;
|
|
148
|
+
strbuf_realloc(pathbuf, pathbuf->len + 1 + strlen(ent->d_name) + 1);
|
|
149
|
+
// special handling for the root directory
|
|
150
|
+
if(strcmp(pathbuf->ptr, "/") != 0){
|
|
151
|
+
strcat(pathbuf->ptr, "/");
|
|
152
|
+
}
|
|
153
|
+
strcat(pathbuf->ptr, ent->d_name);
|
|
154
|
+
if(lstat(pathbuf->ptr, &st) < 0){
|
|
155
|
+
switch (errno){
|
|
156
|
+
case ENOENT:
|
|
157
|
+
break;
|
|
158
|
+
case EACCES:
|
|
159
|
+
print_error(pathbuf->ptr);
|
|
160
|
+
break;
|
|
161
|
+
default:
|
|
162
|
+
die(pathbuf->ptr);
|
|
163
|
+
}
|
|
164
|
+
} else {
|
|
165
|
+
if (S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode)) {
|
|
166
|
+
traverseSub(pathbuf, 0);
|
|
167
|
+
} else {
|
|
168
|
+
puts(pathbuf->ptr);
|
|
169
|
+
strcpy(to_name,dir2);
|
|
170
|
+
strcpy(to_name+strlen(dir2),pathbuf->ptr+strlen(dir1));
|
|
171
|
+
if (ccp(pathbuf->ptr, to_name)){
|
|
172
|
+
printf("File:%s\n",to_name);
|
|
173
|
+
}
|
|
174
|
+
}
|
|
175
|
+
}
|
|
176
|
+
*strrchr(pathbuf->ptr, '/') = '\0';
|
|
177
|
+
}
|
|
178
|
+
closedir(d);
|
|
179
|
+
//printf("traverseSub E\n");
|
|
180
|
+
}
|
|
181
|
+
#define INITLEN 1024
|
|
182
|
+
|
|
183
|
+
struct strbuf * strbuf_new(void){
|
|
184
|
+
struct strbuf *buf;
|
|
185
|
+
|
|
186
|
+
buf = (struct strbuf*)malloc(sizeof(struct strbuf));
|
|
187
|
+
if (!buf) {
|
|
188
|
+
die("malloc(3)");
|
|
189
|
+
}
|
|
190
|
+
buf->ptr = malloc(INITLEN);
|
|
191
|
+
if(!buf->ptr){
|
|
192
|
+
die("malloc(3)");
|
|
193
|
+
}
|
|
194
|
+
buf->len = INITLEN;
|
|
195
|
+
return buf;
|
|
196
|
+
}
|
|
197
|
+
|
|
198
|
+
void strbuf_realloc(struct strbuf *buf, size_t len){
|
|
199
|
+
char *tmp;
|
|
200
|
+
|
|
201
|
+
if(buf->len > len)
|
|
202
|
+
return;
|
|
203
|
+
tmp = realloc(buf->ptr, len);
|
|
204
|
+
if (!tmp) {
|
|
205
|
+
die("realloc(3)");
|
|
206
|
+
}
|
|
207
|
+
buf->ptr = tmp;
|
|
208
|
+
buf->len = len;
|
|
209
|
+
}
|
|
210
|
+
```
|