1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7 #include "SkOSFile.h"
8
Join(const char * rootPath,const char * relativePath)9 SkString SkOSPath::Join(const char *rootPath, const char *relativePath) {
10 SkString result(rootPath);
11 if (!result.endsWith(SkPATH_SEPARATOR) && !result.isEmpty()) {
12 result.appendUnichar(SkPATH_SEPARATOR);
13 }
14 result.append(relativePath);
15 return result;
16 }
17
Basename(const char * fullPath)18 SkString SkOSPath::Basename(const char* fullPath) {
19 if (!fullPath) {
20 return SkString();
21 }
22 const char* filename = strrchr(fullPath, SkPATH_SEPARATOR);
23 if (NULL == filename) {
24 filename = fullPath;
25 } else {
26 ++filename;
27 }
28 return SkString(filename);
29 }
30
Dirname(const char * fullPath)31 SkString SkOSPath::Dirname(const char* fullPath) {
32 if (!fullPath) {
33 return SkString();
34 }
35 const char* end = strrchr(fullPath, SkPATH_SEPARATOR);
36 if (NULL == end) {
37 return SkString();
38 }
39 if (end == fullPath) {
40 SkASSERT(fullPath[0] == SkPATH_SEPARATOR);
41 ++end;
42 }
43 return SkString(fullPath, end - fullPath);
44 }
45
46 #ifdef SK_BUILD_FOR_WIN
47
concat_to_16(const char src[],const char suffix[])48 static uint16_t* concat_to_16(const char src[], const char suffix[])
49 {
50 size_t i, len = strlen(src);
51 size_t len2 = 3 + (suffix ? strlen(suffix) : 0);
52 uint16_t* dst = (uint16_t*)sk_malloc_throw((len + len2) * sizeof(uint16_t));
53
54 for (i = 0; i < len; i++)
55 dst[i] = src[i];
56
57 if (i > 0 && dst[i-1] != '/')
58 dst[i++] = '/';
59 dst[i++] = '*';
60
61 if (suffix)
62 {
63 while (*suffix)
64 dst[i++] = *suffix++;
65 }
66 dst[i] = 0;
67 SkASSERT(i + 1 <= len + len2);
68
69 return dst;
70 }
71
72 ////////////////////////////////////////////////////////////////////////////
73
Iter()74 SkOSFile::Iter::Iter() : fHandle(0), fPath16(NULL)
75 {
76 }
77
Iter(const char path[],const char suffix[])78 SkOSFile::Iter::Iter(const char path[], const char suffix[]) : fHandle(0), fPath16(NULL)
79 {
80 this->reset(path, suffix);
81 }
82
~Iter()83 SkOSFile::Iter::~Iter()
84 {
85 sk_free(fPath16);
86 if (fHandle)
87 ::FindClose(fHandle);
88 }
89
reset(const char path[],const char suffix[])90 void SkOSFile::Iter::reset(const char path[], const char suffix[])
91 {
92 if (fHandle)
93 {
94 ::FindClose(fHandle);
95 fHandle = 0;
96 }
97 if (NULL == path)
98 path = "";
99
100 sk_free(fPath16);
101 fPath16 = concat_to_16(path, suffix);
102 }
103
is_magic_dir(const uint16_t dir[])104 static bool is_magic_dir(const uint16_t dir[])
105 {
106 // return true for "." and ".."
107 return dir[0] == '.' && (dir[1] == 0 || dir[1] == '.' && dir[2] == 0);
108 }
109
get_the_file(HANDLE handle,SkString * name,WIN32_FIND_DATAW * dataPtr,bool getDir)110 static bool get_the_file(HANDLE handle, SkString* name, WIN32_FIND_DATAW* dataPtr, bool getDir)
111 {
112 WIN32_FIND_DATAW data;
113
114 if (NULL == dataPtr)
115 {
116 if (::FindNextFileW(handle, &data))
117 dataPtr = &data;
118 else
119 return false;
120 }
121
122 for (;;)
123 {
124 if (getDir)
125 {
126 if ((dataPtr->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && !is_magic_dir((uint16_t*)dataPtr->cFileName))
127 break;
128 }
129 else
130 {
131 if (!(dataPtr->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
132 break;
133 }
134 if (!::FindNextFileW(handle, dataPtr))
135 return false;
136 }
137 // if we get here, we've found a file/dir
138 if (name)
139 name->setUTF16((uint16_t*)dataPtr->cFileName);
140 return true;
141 }
142
next(SkString * name,bool getDir)143 bool SkOSFile::Iter::next(SkString* name, bool getDir)
144 {
145 WIN32_FIND_DATAW data;
146 WIN32_FIND_DATAW* dataPtr = NULL;
147
148 if (fHandle == 0) // our first time
149 {
150 if (fPath16 == NULL || *fPath16 == 0) // check for no path
151 return false;
152
153 fHandle = ::FindFirstFileW((LPCWSTR)fPath16, &data);
154 if (fHandle != 0 && fHandle != (HANDLE)~0)
155 dataPtr = &data;
156 }
157 return fHandle != (HANDLE)~0 && get_the_file(fHandle, name, dataPtr, getDir);
158 }
159
160 #elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID) || defined(SK_BUILD_FOR_IOS)
161
162 #if 0
163 OSStatus FSPathMakeRef (
164 const UInt8 * path,
165 FSRef * ref,
166 Boolean * isDirectory
167 );
168 #endif
169
Iter()170 SkOSFile::Iter::Iter() : fDIR(0)
171 {
172 }
173
Iter(const char path[],const char suffix[])174 SkOSFile::Iter::Iter(const char path[], const char suffix[]) : fDIR(0)
175 {
176 this->reset(path, suffix);
177 }
178
~Iter()179 SkOSFile::Iter::~Iter()
180 {
181 if (fDIR)
182 ::closedir(fDIR);
183 }
184
reset(const char path[],const char suffix[])185 void SkOSFile::Iter::reset(const char path[], const char suffix[])
186 {
187 if (fDIR)
188 {
189 ::closedir(fDIR);
190 fDIR = 0;
191 }
192
193 fPath.set(path);
194 if (path)
195 {
196 fDIR = ::opendir(path);
197 fSuffix.set(suffix);
198 }
199 else
200 fSuffix.reset();
201 }
202
203 // returns true if suffix is empty, or if str ends with suffix
issuffixfor(const SkString & suffix,const char str[])204 static bool issuffixfor(const SkString& suffix, const char str[])
205 {
206 size_t suffixLen = suffix.size();
207 size_t strLen = strlen(str);
208
209 return strLen >= suffixLen &&
210 memcmp(suffix.c_str(), str + strLen - suffixLen, suffixLen) == 0;
211 }
212
213 #include <sys/stat.h>
214
next(SkString * name,bool getDir)215 bool SkOSFile::Iter::next(SkString* name, bool getDir)
216 {
217 if (fDIR)
218 {
219 dirent* entry;
220
221 while ((entry = ::readdir(fDIR)) != NULL)
222 {
223 struct stat s;
224 SkString str(fPath);
225
226 if (!str.endsWith("/") && !str.endsWith("\\"))
227 str.append("/");
228 str.append(entry->d_name);
229
230 if (0 == stat(str.c_str(), &s))
231 {
232 if (getDir)
233 {
234 if (s.st_mode & S_IFDIR)
235 break;
236 }
237 else
238 {
239 if (!(s.st_mode & S_IFDIR) && issuffixfor(fSuffix, entry->d_name))
240 break;
241 }
242 }
243 }
244 if (entry) // we broke out with a file
245 {
246 if (name)
247 name->set(entry->d_name);
248 return true;
249 }
250 }
251 return false;
252 }
253 #endif // if one of:SK_BUILD_FOR_MAC, SK_BUILD_FOR_UNIX, SK_BUILD_FOR_ANDROID,SK_BUILD_FOR_IOS
254