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comparison: modules/libjar/zipwriter/src/StreamFunctions.cpp
modules/libjar/zipwriter/src/StreamFunctions.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:3e577645eaca |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 */ | |
| 5 | |
| 6 #include "nscore.h" | |
| 7 #include "nsIInputStream.h" | |
| 8 #include "nsIOutputStream.h" | |
| 9 | |
| 10 /* | |
| 11 * Fully reads the required amount of data. Keeps reading until all the | |
| 12 * data is retrieved or an error is hit. | |
| 13 */ | |
| 14 NS_HIDDEN_(nsresult) ZW_ReadData(nsIInputStream *aStream, char *aBuffer, uint32_t aCount) | |
| 15 { | |
| 16 while (aCount > 0) { | |
| 17 uint32_t read; | |
| 18 nsresult rv = aStream->Read(aBuffer, aCount, &read); | |
| 19 NS_ENSURE_SUCCESS(rv, rv); | |
| 20 aCount -= read; | |
| 21 aBuffer += read; | |
| 22 // If we hit EOF before reading the data we need then throw. | |
| 23 if (read == 0 && aCount > 0) | |
| 24 return NS_ERROR_FAILURE; | |
| 25 } | |
| 26 | |
| 27 return NS_OK; | |
| 28 } | |
| 29 | |
| 30 /* | |
| 31 * Fully writes the required amount of data. Keeps writing until all the | |
| 32 * data is written or an error is hit. | |
| 33 */ | |
| 34 NS_HIDDEN_(nsresult) ZW_WriteData(nsIOutputStream *aStream, const char *aBuffer, | |
| 35 uint32_t aCount) | |
| 36 { | |
| 37 while (aCount > 0) { | |
| 38 uint32_t written; | |
| 39 nsresult rv = aStream->Write(aBuffer, aCount, &written); | |
| 40 NS_ENSURE_SUCCESS(rv, rv); | |
| 41 if (written <= 0) | |
| 42 return NS_ERROR_FAILURE; | |
| 43 aCount -= written; | |
| 44 aBuffer += written; | |
| 45 } | |
| 46 | |
| 47 return NS_OK; | |
| 48 } |
