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ArmPlatformPkg/Bds: Introduced helper function to detect if an Ascii/Unicode string is printable

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Some limitations:
 - it only supports unicode string that use ASCII character (< 0x100)
 - single character ASCII strings are interpreted as Unicode string
 - string cannot be longer than 2 x BOOT_DEVICE_OPTION_MAX (600 bytes)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15455 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin
2014-04-11 10:59:48 +00:00
committed by oliviermartin
parent 6bcedcecb5
commit 135b09a2c2
2 changed files with 98 additions and 1 deletions
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21
ArmPlatformPkg/Bds/BdsInternal.h
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@@ -257,4 +257,25 @@ IsUnicodeString (
IN VOID* String
);
/*
* Try to detect if the given string is an ASCII or Unicode string
*
* There are actually few limitation to this function but it is mainly to give
* a user friendly output.
*
* Some limitations:
* - it only supports unicode string that use ASCII character (< 0x100)
* - single character ASCII strings are interpreted as Unicode string
* - string cannot be longer than 2 x BOOT_DEVICE_OPTION_MAX (600 bytes)
*
* @param String Buffer that might contain a Unicode or Ascii string
* @param IsUnicode If not NULL this boolean value returns if the string is an
* ASCII or Unicode string.
*/
BOOLEAN
IsPrintableString (
IN VOID* String,
OUT BOOLEAN *IsUnicode
);
#endif /* _BDSINTERNAL_H_ */