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| 1 /* libs/graphics/ports/SkOSFile_stdio.cpp | |
| 2 ** | |
| 3 ** Copyright 2006, The Android Open Source Project | |
| 4 ** | |
| 5 ** Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 ** you may not use this file except in compliance with the License. | |
| 7 ** You may obtain a copy of the License at | |
| 8 ** | |
| 9 ** http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 ** | |
| 11 ** Unless required by applicable law or agreed to in writing, software | |
| 12 ** distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 ** See the License for the specific language governing permissions and | |
| 15 ** limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 #include "SkOSFile.h" | |
| 19 | |
| 20 #ifndef SK_BUILD_FOR_BREW | |
| 21 | |
| 22 #include <stdio.h> | |
| 23 #include <errno.h> | |
| 24 | |
| 25 SkFILE* sk_fopen(const char path[], SkFILE_Flags flags) | |
| 26 { | |
| 27 char perm[4]; | |
| 28 char* p = perm; | |
| 29 | |
| 30 if (flags & kRead_SkFILE_Flag) | |
| 31 *p++ = 'r'; | |
| 32 if (flags & kWrite_SkFILE_Flag) | |
| 33 *p++ = 'w'; | |
| 34 *p++ = 'b'; | |
| 35 *p = 0; | |
| 36 | |
| 37 SkFILE* f = (SkFILE*)::fopen(path, perm); | |
| 38 #if 0 | |
| 39 if (NULL == f) | |
| 40 SkDebugf("sk_fopen failed for %s (%s), errno=%s\n", path, perm, strerror
(errno)); | |
| 41 #endif | |
| 42 return f; | |
| 43 } | |
| 44 | |
| 45 size_t sk_fgetsize(SkFILE* f) | |
| 46 { | |
| 47 SkASSERT(f); | |
| 48 | |
| 49 size_t curr = ::ftell((FILE*)f); // remember where we are | |
| 50 ::fseek((FILE*)f, 0, SEEK_END); // go to the end | |
| 51 size_t size = ::ftell((FILE*)f); // record the size | |
| 52 ::fseek((FILE*)f, (long)curr, SEEK_SET); // go back to our prev loc | |
| 53 return size; | |
| 54 } | |
| 55 | |
| 56 bool sk_frewind(SkFILE* f) | |
| 57 { | |
| 58 SkASSERT(f); | |
| 59 ::rewind((FILE*)f); | |
| 60 // ::fseek((FILE*)f, 0, SEEK_SET); | |
| 61 return true; | |
| 62 } | |
| 63 | |
| 64 size_t sk_fread(void* buffer, size_t byteCount, SkFILE* f) | |
| 65 { | |
| 66 SkASSERT(f); | |
| 67 if (buffer == NULL) | |
| 68 { | |
| 69 size_t curr = ::ftell((FILE*)f); | |
| 70 if ((long)curr == -1) { | |
| 71 SkDEBUGF(("sk_fread: ftell(%p) returned -1 feof:%d ferror:%d\n", f,
feof((FILE*)f), ferror((FILE*)f))); | |
| 72 return 0; | |
| 73 } | |
| 74 // ::fseek((FILE*)f, (long)(curr + byteCount), SEEK_SET); | |
| 75 int err = ::fseek((FILE*)f, (long)byteCount, SEEK_CUR); | |
| 76 if (err != 0) { | |
| 77 SkDEBUGF(("sk_fread: fseek(%d) tell:%d failed with feof:%d ferror:%d
returned:%d\n", | |
| 78 byteCount, curr, feof((FILE*)f), ferror((FILE*)f), err))
; | |
| 79 return 0; | |
| 80 } | |
| 81 return byteCount; | |
| 82 } | |
| 83 else | |
| 84 return ::fread(buffer, 1, byteCount, (FILE*)f); | |
| 85 } | |
| 86 | |
| 87 size_t sk_fwrite(const void* buffer, size_t byteCount, SkFILE* f) | |
| 88 { | |
| 89 SkASSERT(f); | |
| 90 return ::fwrite(buffer, 1, byteCount, (FILE*)f); | |
| 91 } | |
| 92 | |
| 93 void sk_fflush(SkFILE* f) | |
| 94 { | |
| 95 SkASSERT(f); | |
| 96 ::fflush((FILE*)f); | |
| 97 } | |
| 98 | |
| 99 void sk_fclose(SkFILE* f) | |
| 100 { | |
| 101 SkASSERT(f); | |
| 102 ::fclose((FILE*)f); | |
| 103 } | |
| 104 | |
| 105 #endif | |
| 106 | |
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