Mercurial > dwindows
annotate win/dirent.c @ 405:4c084ec3e176
Ok, so that last fix has some problems, this new fix is a hybrid of the
old fix and the new fix, I think it finally works as advertised. ;)
author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
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date | Sun, 11 May 2003 00:33:33 +0000 |
parents | e320dc29bfcd |
children | e0ea29c3d1eb |
rev | line source |
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3 | 1 #include <stdio.h> |
2 #include <stdlib.h> | |
3 #include <string.h> | |
4 #include <ctype.h> | |
5 | |
6 #include <windows.h> | |
7 | |
8 #include "dirent.h" | |
9 #include <errno.h> | |
10 | |
11 #define error(rc) errno = 255 | |
12 | |
13 struct _dirdescr { | |
14 HANDLE handle; /* DosFindFirst handle */ | |
15 char fstype; /* filesystem type */ | |
16 long count; /* valid entries in <ffbuf> */ | |
17 long number; /* absolute number of next entry */ | |
18 int index; /* relative number of next entry */ | |
19 char name[MAXPATHLEN+3]; /* directory name */ | |
20 unsigned attrmask; /* attribute mask for seekdir */ | |
21 struct dirent entry; /* buffer for directory entry */ | |
22 WIN32_FIND_DATA data; | |
23 }; | |
24 | |
25 /* | |
26 * Return first char of filesystem type, or 0 if unknown. | |
27 */ | |
28 static char | |
29 getFSType(const char *path) | |
30 { | |
31 static char cache[1+26]; | |
32 char drive[3]; | |
33 ULONG unit; | |
34 char r; | |
35 | |
36 if (isalpha(path[0]) && path[1] == ':') { | |
37 unit = toupper(path[0]) - '@'; | |
38 path += 2; | |
39 } else { | |
40 return 0; | |
41 } | |
42 | |
43 if ((path[0] == '\\' || path[0] == '/') | |
44 && (path[1] == '\\' || path[1] == '/')) | |
45 return 0; | |
46 | |
47 if (cache [unit]) | |
48 return cache [unit]; | |
49 | |
50 drive[0] = '@' + unit; | |
51 drive[1] = ':'; | |
52 drive[2] = '\0'; | |
53 | |
54 r = GetDriveType(drive); | |
55 | |
56 return cache [unit] = r; | |
57 } | |
58 | |
260
e320dc29bfcd
Rewrote abs_path() so the code will work on NT 4.0.
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59 char *abs_path(const char *name, char *buffer, int len) |
3 | 60 { |
260
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61 char *buf; |
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62 LPTSTR file; |
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63 |
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64 if(isalpha(name[0]) && name[1] == ':' && name[2] == '\0') |
e320dc29bfcd
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65 { |
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66 int drive = _getdrive(); |
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67 char newdrive = toupper(name[0]); |
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68 |
e320dc29bfcd
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69 _chdrive((newdrive - 'A')+1); |
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70 |
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71 if(getcwd(buffer, len)) |
e320dc29bfcd
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72 { |
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73 _chdrive(drive); |
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74 return buffer; |
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75 } |
e320dc29bfcd
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76 _chdrive(drive); |
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77 return NULL; |
3 | 78 } |
260
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79 if(GetFullPathName(name, len, buffer, &file)) |
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80 return buffer; |
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81 return NULL; |
3 | 82 } |
83 | |
260
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84 DIR *openxdir(const char *path, unsigned att_mask) |
3 | 85 { |
86 DIR *dir; | |
87 char name[MAXPATHLEN+3]; | |
88 | |
89 dir = malloc(sizeof(DIR)); | |
90 if (dir == NULL) { | |
91 errno = ENOMEM; | |
92 return NULL; | |
93 } | |
94 | |
95 strncpy(name, path, MAXPATHLEN); | |
96 name[MAXPATHLEN] = '\0'; | |
97 switch (name[strlen(name)-1]) { | |
98 default: | |
99 strcat(name, "\\"); | |
100 case '\\': | |
101 case '/': | |
102 case ':': | |
103 ; | |
104 } | |
105 strcat(name, "."); | |
106 if (!abs_path(name, dir->name, MAXPATHLEN+1)) | |
107 strcpy(dir->name, name); | |
108 if (dir->name[strlen(dir->name)-1] == '\\') | |
109 strcat(dir->name, "*"); | |
110 else | |
111 strcat(dir->name, "\\*"); | |
112 | |
113 dir->fstype = getFSType(dir->name); | |
114 dir->attrmask = att_mask | A_DIR; | |
115 | |
116 dir->count = 100; | |
184
4ec906d40ce2
FindFirstFile returns INVALID_HANDLE_VALUE on error, not NULL.
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117 if((dir->handle = FindFirstFile(dir->name, &dir->data))==INVALID_HANDLE_VALUE) |
3 | 118 { |
119 free(dir); | |
120 error(rc); | |
121 return NULL; | |
122 } | |
123 | |
124 dir->number = 0; | |
125 dir->index = 0; | |
126 | |
127 return (DIR *)dir; | |
128 } | |
129 | |
130 DIR * | |
131 opendir(const char *pathname) | |
132 { | |
133 return openxdir(pathname, 0); | |
134 } | |
135 | |
136 struct dirent * | |
137 readdir(DIR *dir) | |
138 { | |
139 static int dummy_ino = 2; | |
140 | |
141 if (dir->number) | |
142 { | |
143 ULONG rc; | |
144 dir->count = 100; | |
145 if(!FindNextFile(dir->handle, &(dir->data))) | |
146 { | |
147 error(rc); | |
148 return NULL; | |
149 } | |
150 | |
151 dir->index = 0; | |
152 } | |
153 | |
154 strcpy(dir->entry.d_name, dir->data.cFileName); | |
155 dir->entry.d_ino = dummy_ino++; | |
156 dir->entry.d_reclen = strlen(dir->data.cFileName); | |
157 dir->entry.d_namlen = strlen(dir->data.cFileName); | |
158 dir->entry.d_size = dir->data.nFileSizeLow; | |
159 dir->entry.d_attribute = dir->data.dwFileAttributes; | |
160 #if 0 | |
161 dir->entry.d_time = *(USHORT *)&dir->next->ftimeLastWrite; | |
162 dir->entry.d_date = *(USHORT *)&dir->next->fdateLastWrite; | |
163 #endif | |
164 | |
165 dir->number++; | |
166 dir->index++; | |
167 return &dir->entry; | |
168 } | |
169 | |
170 long | |
171 telldir(DIR *dir) | |
172 { | |
173 return dir->number; | |
174 } | |
175 | |
176 void | |
177 seekdir(DIR *dir, long off) | |
178 { | |
179 if (dir->number > off) { | |
180 char name[MAXPATHLEN+2]; | |
181 ULONG rc; | |
182 | |
183 FindClose(dir->handle); | |
184 | |
185 strcpy(name, dir->name); | |
186 strcat(name, "*"); | |
187 | |
188 if((dir->handle = FindFirstFile(name, &(dir->data)))==NULL) | |
189 { | |
190 error(rc); | |
191 return; | |
192 } | |
193 | |
194 dir->number = 0; | |
195 dir->index = 0; | |
196 } | |
197 | |
198 while (dir->number < off && readdir(dir)) | |
199 ; | |
200 } | |
201 | |
202 void | |
203 closedir(DIR *dir) | |
204 { | |
205 FindClose(dir->handle); | |
206 free(dir); | |
207 } | |
208 | |
209 /*****************************************************************************/ | |
210 | |
211 #ifdef TEST | |
212 | |
213 main(int argc, char **argv) | |
214 { | |
215 int i; | |
216 DIR *dir; | |
217 struct dirent *ep; | |
218 | |
219 for (i = 1; i < argc; ++i) { | |
220 dir = opendir(argv[i]); | |
221 if (!dir) | |
222 continue; | |
223 while (ep = readdir(dir)) | |
224 if (strchr("\\/:", argv[i] [strlen(argv[i]) - 1])) | |
225 printf("%s%s\n", argv[i], ep->d_name); | |
226 else | |
227 printf("%s/%s\n", argv[i], ep->d_name); | |
228 closedir(dir); | |
229 } | |
230 | |
231 return 0; | |
232 } | |
233 | |
234 #endif |