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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkReader32.h" | 8 #include "SkReader32.h" |
9 #include "SkString.h" | 9 #include "SkString.h" |
10 #include "SkWriter32.h" | 10 #include "SkWriter32.h" |
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59 | 59 |
60 size_t SkWriter32::WriteStringSize(const char* str, size_t len) { | 60 size_t SkWriter32::WriteStringSize(const char* str, size_t len) { |
61 if ((long)len < 0) { | 61 if ((long)len < 0) { |
62 SkASSERT(str); | 62 SkASSERT(str); |
63 len = strlen(str); | 63 len = strlen(str); |
64 } | 64 } |
65 const size_t lenBytes = 4; // we use 4 bytes to record the length | 65 const size_t lenBytes = 4; // we use 4 bytes to record the length |
66 // add 1 since we also write a terminating 0 | 66 // add 1 since we also write a terminating 0 |
67 return SkAlign4(lenBytes + len + 1); | 67 return SkAlign4(lenBytes + len + 1); |
68 } | 68 } |
| 69 |
| 70 void SkWriter32::growToAtLeast(size_t size) { |
| 71 bool wasExternal = (fExternal != NULL) && (fData == fExternal); |
| 72 // cause the buffer to grow |
| 73 fInternal.setCount(size); |
| 74 fData = fInternal.begin(); |
| 75 if (wasExternal) { |
| 76 // we were external, so copy in the data |
| 77 memcpy(fData, fExternal, fUsed); |
| 78 } |
| 79 // Find out the size the buffer grew to, it may be more than we asked for. |
| 80 fCapacity = fInternal.reserved(); |
| 81 // Expand the array so all reserved space is "used", we maintain the |
| 82 // amount we have written manually outside the array |
| 83 fInternal.setCount(fCapacity); |
| 84 SkASSERT(fInternal.count() == fCapacity); |
| 85 SkASSERT(fInternal.reserved() == fCapacity); |
| 86 } |
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