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Writing BMP based ICO files now works.
Functional in simple tests, but needs more testing for edge cases; it makes heavy assumptions about the internal format of the NSBitmapImageReps and has no error checking.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| // | ||
| // NSMutableData+EndianValues.h | ||
| // iConvertIcons | ||
| // | ||
| // Created by Mathew Eis on 22/11/2011. | ||
| // Copyright (c) 2011 Mathew Eis. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @interface NSMutableData (EndianValues) | ||
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| - (void) appendBESInt8: (SInt8)value; | ||
| - (void) appendBESInt16: (SInt16)value; | ||
| - (void) appendBESInt32: (SInt32)value; | ||
|
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| - (void) appendBEUInt8: (UInt8)value; | ||
| - (void) appendBEUInt16: (UInt16)value; | ||
| - (void) appendBEUInt32: (UInt32)value; | ||
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| - (void) appendLESInt8: (SInt8)value; | ||
| - (void) appendLESInt16: (SInt16)value; | ||
| - (void) appendLESInt32: (SInt32)value; | ||
|
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| - (void) appendLEUInt8: (UInt8)value; | ||
| - (void) appendLEUInt16: (UInt16)value; | ||
| - (void) appendLEUInt32: (UInt32)value; | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| // | ||
| // NSMutableData+EndianValues.m | ||
| // iConvertIcons | ||
| // | ||
| // Created by Mathew Eis on 22/11/2011. | ||
| // Copyright (c) 2011 Mathew Eis. All rights reserved. | ||
| // | ||
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| #import "NSMutableData+EndianValues.h" | ||
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| @implementation NSMutableData (EndianValues) | ||
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| - (void) appendBESInt8: (SInt8)value | ||
| { | ||
| [self appendBytes:&(value) length:1]; | ||
| } | ||
| - (void) appendBESInt16: (SInt16)value | ||
| { | ||
| UInt16 uvalue = *((UInt16 *)(&value)); | ||
| [self appendBEUInt16:uvalue]; | ||
| } | ||
| - (void) appendBESInt32: (SInt32)value | ||
| { | ||
| UInt32 uvalue = *((UInt32 *)(&value)); | ||
| [self appendBEUInt32:uvalue]; | ||
| } | ||
|
|
||
| - (void) appendBEUInt8: (UInt8)value | ||
| { | ||
| [self appendBytes:&(value) length:1]; | ||
| } | ||
| - (void) appendBEUInt16: (UInt16)value | ||
| { | ||
| UInt8 b[2]; | ||
| b[0] = value >> 8; | ||
| b[1] = value; | ||
| [self appendBytes:&b[0] length:2]; | ||
| } | ||
| - (void) appendBEUInt32: (UInt32)value | ||
| { | ||
| UInt8 b[4]; | ||
| b[0] = value >> 24; | ||
| b[1] = value >> 16; | ||
| b[2] = value >> 8; | ||
| b[3] = value; | ||
| [self appendBytes:&b[0] length:4]; | ||
| } | ||
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||
| - (void) appendLESInt8: (SInt8)value | ||
| { | ||
| [self appendBytes:&(value) length:1]; | ||
| } | ||
| - (void) appendLESInt16: (SInt16)value | ||
| { | ||
| UInt16 uvalue = *((UInt16 *)(&value)); | ||
| [self appendLEUInt16:uvalue]; | ||
| } | ||
| - (void) appendLESInt32: (SInt32)value | ||
| { | ||
| UInt32 uvalue = *((UInt32 *)(&value)); | ||
| [self appendLEUInt32:uvalue]; | ||
| } | ||
|
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||
| - (void) appendLEUInt8: (UInt8)value | ||
| { | ||
| [self appendBytes:&(value) length:1]; | ||
| } | ||
| - (void) appendLEUInt16: (UInt16)value | ||
| { | ||
| UInt8 b[2]; | ||
| b[0] = value; | ||
| b[1] = value >> 8; | ||
| [self appendBytes:&b[0] length:2]; | ||
| } | ||
| - (void) appendLEUInt32: (UInt32)value | ||
| { | ||
| UInt8 b[4]; | ||
| b[0] = value; | ||
| b[1] = value >> 8; | ||
| b[2] = value >> 16; | ||
| b[3] = value >> 24; | ||
| [self appendBytes:&b[0] length:4]; | ||
| } | ||
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| @end |