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[libc] Add isprint() 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2014-01-03 02:21:52 +01:00
parent bf15737cf0
commit a4e8ef72ab
2 changed files with 3 additions and 3 deletions
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5
src/core/debug.c
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@ -22,6 +22,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <stdio.h>
#include <stdint.h>
#include <stdarg.h>
#include <ctype.h>
#include <ipxe/console.h>
/**
@ -96,9 +97,7 @@ static void dbg_hex_dump_da_row ( unsigned long dispaddr, const void *data,
continue;
}
byte = bytes[i];
if ( ( byte < 0x20 ) || ( byte >= 0x7f ) )
byte = '.';
dbg_printf ( "%c", byte );
dbg_printf ( "%c", ( isprint ( byte ) ? byte : '.' ) );
}
dbg_printf ( "\n" );
}

1
src/include/ctype.h
View File

@ -12,6 +12,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define islower(c) ((c) >= 'a' && (c) <= 'z')
#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
#define isxdigit(c) (isdigit(c) || ((c) >= 'A' && (c) <= 'F') || ((c) >= 'a' && (c) <= 'f'))
#define isprint(c) ((c) >= ' ' && (c) <= '~' )
static inline unsigned char tolower(unsigned char c)
{