1 /*
2 * Copyright 2006 The Android Open Source Project
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
8 #include "SkOSFile.h"
9
10 #include <errno.h>
11 #include <stdio.h>
12 #include <sys/stat.h>
13 #include <sys/types.h>
14
15 #ifdef _WIN32
16 #include <direct.h>
17 #include <io.h>
18 #endif
19
sk_fopen(const char path[],SkFILE_Flags flags)20 SkFILE* sk_fopen(const char path[], SkFILE_Flags flags) {
21 char perm[4];
22 char* p = perm;
23
24 if (flags & kRead_SkFILE_Flag) {
25 *p++ = 'r';
26 }
27 if (flags & kWrite_SkFILE_Flag) {
28 *p++ = 'w';
29 }
30 *p++ = 'b';
31 *p = 0;
32
33 //TODO: on Windows fopen is just ASCII or the current code page,
34 //convert to utf16 and use _wfopen
35 return (SkFILE*)::fopen(path, perm);
36 }
37
sk_fgets(char * str,int size,SkFILE * f)38 char* sk_fgets(char* str, int size, SkFILE* f) {
39 return ::fgets(str, size, (FILE *)f);
40 }
41
sk_feof(SkFILE * f)42 int sk_feof(SkFILE *f) {
43 // no :: namespace qualifier because it breaks android
44 return feof((FILE *)f);
45 }
46
sk_fgetsize(SkFILE * f)47 size_t sk_fgetsize(SkFILE* f) {
48 SkASSERT(f);
49
50 long curr = ::ftell((FILE*)f); // remember where we are
51 if (curr < 0) {
52 return 0;
53 }
54
55 ::fseek((FILE*)f, 0, SEEK_END); // go to the end
56 long size = ::ftell((FILE*)f); // record the size
57 if (size < 0) {
58 size = 0;
59 }
60
61 ::fseek((FILE*)f, curr, SEEK_SET); // go back to our prev location
62 return size;
63 }
64
sk_frewind(SkFILE * f)65 bool sk_frewind(SkFILE* f) {
66 SkASSERT(f);
67 ::rewind((FILE*)f);
68 return true;
69 }
70
sk_fread(void * buffer,size_t byteCount,SkFILE * f)71 size_t sk_fread(void* buffer, size_t byteCount, SkFILE* f) {
72 SkASSERT(f);
73 if (buffer == NULL) {
74 size_t curr = ::ftell((FILE*)f);
75 if ((long)curr == -1) {
76 SkDEBUGF(("sk_fread: ftell(%p) returned -1 feof:%d ferror:%d\n", f, feof((FILE*)f), ferror((FILE*)f)));
77 return 0;
78 }
79 int err = ::fseek((FILE*)f, (long)byteCount, SEEK_CUR);
80 if (err != 0) {
81 SkDEBUGF(("sk_fread: fseek(%d) tell:%d failed with feof:%d ferror:%d returned:%d\n",
82 byteCount, curr, feof((FILE*)f), ferror((FILE*)f), err));
83 return 0;
84 }
85 return byteCount;
86 }
87 else
88 return ::fread(buffer, 1, byteCount, (FILE*)f);
89 }
90
sk_fwrite(const void * buffer,size_t byteCount,SkFILE * f)91 size_t sk_fwrite(const void* buffer, size_t byteCount, SkFILE* f) {
92 SkASSERT(f);
93 return ::fwrite(buffer, 1, byteCount, (FILE*)f);
94 }
95
sk_fflush(SkFILE * f)96 void sk_fflush(SkFILE* f) {
97 SkASSERT(f);
98 ::fflush((FILE*)f);
99 }
100
sk_fseek(SkFILE * f,size_t byteCount)101 bool sk_fseek(SkFILE* f, size_t byteCount) {
102 int err = ::fseek((FILE*)f, (long)byteCount, SEEK_SET);
103 return err == 0;
104 }
105
sk_fmove(SkFILE * f,long byteCount)106 bool sk_fmove(SkFILE* f, long byteCount) {
107 int err = ::fseek((FILE*)f, byteCount, SEEK_CUR);
108 return err == 0;
109 }
110
sk_ftell(SkFILE * f)111 size_t sk_ftell(SkFILE* f) {
112 long curr = ::ftell((FILE*)f);
113 if (curr < 0) {
114 return 0;
115 }
116 return curr;
117 }
118
sk_fclose(SkFILE * f)119 void sk_fclose(SkFILE* f) {
120 SkASSERT(f);
121 ::fclose((FILE*)f);
122 }
123
sk_isdir(const char * path)124 bool sk_isdir(const char *path) {
125 struct stat status;
126 if (0 != stat(path, &status)) {
127 return false;
128 }
129 return SkToBool(status.st_mode & S_IFDIR);
130 }
131
sk_mkdir(const char * path)132 bool sk_mkdir(const char* path) {
133 if (sk_isdir(path)) {
134 return true;
135 }
136 if (sk_exists(path)) {
137 fprintf(stderr,
138 "sk_mkdir: path '%s' already exists but is not a directory\n",
139 path);
140 return false;
141 }
142
143 int retval;
144 #ifdef _WIN32
145 retval = _mkdir(path);
146 #else
147 retval = mkdir(path, 0777);
148 #endif
149 if (0 == retval) {
150 return true;
151 } else {
152 fprintf(stderr, "sk_mkdir: error %d creating dir '%s'\n", errno, path);
153 return false;
154 }
155 }
156