1
2 /*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10 #include "SkOSFile.h"
11
12 #include <errno.h>
13 #include <stdio.h>
14 #include <sys/stat.h>
15 #include <sys/types.h>
16
17 #ifdef _WIN32
18 #include <direct.h>
19 #include <io.h>
20 #else
21 #include <unistd.h>
22 #endif
23
sk_fopen(const char path[],SkFILE_Flags flags)24 SkFILE* sk_fopen(const char path[], SkFILE_Flags flags)
25 {
26 char perm[4];
27 char* p = perm;
28
29 if (flags & kRead_SkFILE_Flag)
30 *p++ = 'r';
31 if (flags & kWrite_SkFILE_Flag)
32 *p++ = 'w';
33 *p++ = 'b';
34 *p = 0;
35
36 SkFILE* f = (SkFILE*)::fopen(path, perm);
37 #if 0
38 if (NULL == f)
39 SkDebugf("sk_fopen failed for %s (%s), errno=%s\n", path, perm, strerror(errno));
40 #endif
41 return f;
42 }
43
sk_fgets(char * str,int size,SkFILE * f)44 char* sk_fgets(char* str, int size, SkFILE* f) {
45 return ::fgets(str, size, (FILE *)f);
46 }
47
48
sk_feof(SkFILE * f)49 int sk_feof(SkFILE *f) {
50 // no :: namespace qualifier because it breaks android
51 return feof((FILE *)f);
52 }
53
sk_fgetsize(SkFILE * f)54 size_t sk_fgetsize(SkFILE* f)
55 {
56 SkASSERT(f);
57
58 long curr = ::ftell((FILE*)f); // remember where we are
59 if (curr < 0) {
60 return 0;
61 }
62 ::fseek((FILE*)f, 0, SEEK_END); // go to the end
63 long size = ::ftell((FILE*)f); // record the size
64 if (size < 0) {
65 size = 0;
66 }
67 ::fseek((FILE*)f, curr, SEEK_SET); // go back to our prev loc
68 return size;
69 }
70
sk_frewind(SkFILE * f)71 bool sk_frewind(SkFILE* f)
72 {
73 SkASSERT(f);
74 ::rewind((FILE*)f);
75 // ::fseek((FILE*)f, 0, SEEK_SET);
76 return true;
77 }
78
sk_fread(void * buffer,size_t byteCount,SkFILE * f)79 size_t sk_fread(void* buffer, size_t byteCount, SkFILE* f)
80 {
81 SkASSERT(f);
82 if (buffer == NULL)
83 {
84 size_t curr = ::ftell((FILE*)f);
85 if ((long)curr == -1) {
86 SkDEBUGF(("sk_fread: ftell(%p) returned -1 feof:%d ferror:%d\n", f, feof((FILE*)f), ferror((FILE*)f)));
87 return 0;
88 }
89 // ::fseek((FILE*)f, (long)(curr + byteCount), SEEK_SET);
90 int err = ::fseek((FILE*)f, (long)byteCount, SEEK_CUR);
91 if (err != 0) {
92 SkDEBUGF(("sk_fread: fseek(%d) tell:%d failed with feof:%d ferror:%d returned:%d\n",
93 byteCount, curr, feof((FILE*)f), ferror((FILE*)f), err));
94 return 0;
95 }
96 return byteCount;
97 }
98 else
99 return ::fread(buffer, 1, byteCount, (FILE*)f);
100 }
101
sk_fwrite(const void * buffer,size_t byteCount,SkFILE * f)102 size_t sk_fwrite(const void* buffer, size_t byteCount, SkFILE* f)
103 {
104 SkASSERT(f);
105 return ::fwrite(buffer, 1, byteCount, (FILE*)f);
106 }
107
sk_fflush(SkFILE * f)108 void sk_fflush(SkFILE* f)
109 {
110 SkASSERT(f);
111 ::fflush((FILE*)f);
112 }
113
sk_fclose(SkFILE * f)114 void sk_fclose(SkFILE* f)
115 {
116 SkASSERT(f);
117 ::fclose((FILE*)f);
118 }
119
sk_exists(const char * path)120 bool sk_exists(const char *path)
121 {
122 #ifdef _WIN32
123 return (0 == _access(path, 0));
124 #else
125 return (0 == access(path, 0));
126 #endif
127 }
128
sk_isdir(const char * path)129 bool sk_isdir(const char *path)
130 {
131 struct stat status;
132 if (0 != stat(path, &status)) {
133 return false;
134 }
135 return SkToBool(status.st_mode & S_IFDIR);
136 }
137
sk_mkdir(const char * path)138 bool sk_mkdir(const char* path)
139 {
140 if (sk_isdir(path)) {
141 return true;
142 }
143 if (sk_exists(path)) {
144 fprintf(stderr,
145 "sk_mkdir: path '%s' already exists but is not a directory\n",
146 path);
147 return false;
148 }
149
150 int retval;
151 #ifdef _WIN32
152 retval = _mkdir(path);
153 #else
154 retval = mkdir(path, 0777);
155 #endif
156 if (0 == retval) {
157 return true;
158 } else {
159 fprintf(stderr, "sk_mkdir: error %d creating dir '%s'\n", errno, path);
160 return false;
161 }
162 }
163