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Optimize buffer by allocating enough space up front

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Vincent Privat
2025-11-03 18:24:30 +01:00
committed by Harald Kuhr
parent 8da45b5f05
commit 355a916225
1 changed files with 2 additions and 2 deletions
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imageio/imageio-batik/src/main/java/com/twelvemonkeys/imageio/plugins/svg/SVGImageReaderSpi.java
+2 -2
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@@ -140,7 +140,8 @@ public final class SVGImageReaderSpi extends ImageReaderSpiBase {
} }
// Read the full tag name (may contain a prefix of any length) // Read the full tag name (may contain a prefix of any length)
ByteArrayOutputStream nameBuf = new ByteArrayOutputStream(); final int MAX_TAG_NAME = 256;
ByteArrayOutputStream nameBuf = new ByteArrayOutputStream(MAX_TAG_NAME);
// We already have 4 bytes in 'buffer' (from input.readFully(buffer)) // We already have 4 bytes in 'buffer' (from input.readFully(buffer))
int consumedFromBuffer = 0; int consumedFromBuffer = 0;
@@ -153,7 +154,6 @@ public final class SVGImageReaderSpi extends ImageReaderSpiBase {
} }
// If tag name not terminated yet, keep reading bytes (within limit) // If tag name not terminated yet, keep reading bytes (within limit)
final int MAX_TAG_NAME = 256;
final boolean incompleteTagName = consumedFromBuffer == buffer.length; final boolean incompleteTagName = consumedFromBuffer == buffer.length;
readBuffer(input, nameBuf, output -> incompleteTagName && output.size() < MAX_TAG_NAME, readBuffer(input, nameBuf, output -> incompleteTagName && output.size() < MAX_TAG_NAME,
bb -> bb == '>' || Character.isWhitespace(bb) || bb == '/'); bb -> bb == '>' || Character.isWhitespace(bb) || bb == '/');