[hackers] [scc] [libc] Add isblank || Quentin Rameau

From: <git_AT_suckless.org>
Date: Sat, 18 Feb 2017 18:42:58 +0100 (CET)

commit 0f98deff32570e2c79e77dad7344298253b15db9
Author: Quentin Rameau <quinq_AT_fifth.space>
AuthorDate: Sat Feb 18 14:42:42 2017 +0100
Commit: Quentin Rameau <quinq_AT_fifth.space>
CommitDate: Sat Feb 18 18:38:48 2017 +0100

    [libc] Add isblank

diff --git a/libc/include/ctype.h b/libc/include/ctype.h
index e7b9d83..ef9cc06 100644
--- a/libc/include/ctype.h
+++ b/libc/include/ctype.h
_AT_@ -17,7 +17,7 @@ extern int ispunct(int c);
 extern int tolower(int c);
 extern int toupper(int c);
 
-#ifdef __USE_MACROS
+#ifdef __USE_MACROS
 
 #define _U 0x01 /* upper */
 #define _L 0x02 /* lower */
_AT_@ -25,13 +25,15 @@ extern int toupper(int c);
 #define _C 0x08 /* cntrl */
 #define _P 0x10 /* punct */
 #define _S 0x20 /* white space (space/lf/tab) */
-#define _X 0x40 /* hex digit */
+#define _X 0x40 /* hex char */
 #define _SP 0x80 /* hard space (0x20) */
+#define _TB 0x100 /* tabulation */
 
 extern unsigned char _ctype[];
 
 #define isalnum(c) (_ctype[(unsigned char) c] & (_U|_L|_D))
 #define isalpha(c) (_ctype[(unsigned char) c] & (_U|_L))
+#define isblank(c) (_ctype[(unsigned char) c] & (_SP|_TB))
 #define iscntrl(c) (_ctype[(unsigned char) c] & (_C))
 #define isdigit(c) (_ctype[(unsigned char) c] & (_D))
 #define isgraph(c) (_ctype[(unsigned char) c] & (_P|_U|_L|_D))
_AT_@ -46,5 +48,4 @@ extern unsigned char _ctype[];
 
 #endif
 
-
 #endif
diff --git a/libc/src/Makefile b/libc/src/Makefile
index a156e60..555d4cb 100644
--- a/libc/src/Makefile
+++ b/libc/src/Makefile
_AT_@ -4,10 +4,9 @@
 LIBCOBJ = assert.o strcpy.o strcmp.o strlen.o strchr.o \
           strrchr.o strcat.o strncpy.o strncat.o strcoll.o \
           memset.o memcpy.o memmove.o memcmp.o memchr.o \
- isalnum.o isalpha.o isascii.o iscntrl.o isdigit.o isgraph.o \
- islower.o isprint.o ispunct.o isspace.o isupper.o isxdigit.o \
- toupper.o tolower.o \
- setlocale.o
+ isalnum.o isalpha.o isascii.o isblank.o iscntrl.o isdigit.o \
+ isgraph.o islower.o isprint.o ispunct.o isspace.o isupper.o \
+ isxdigit.o toupper.o tolower.o setlocale.o
 
 all: libc.a
 
diff --git a/libc/src/ctype.c b/libc/src/ctype.c
index 2ee3e94..b45d51c 100644
--- a/libc/src/ctype.c
+++ b/libc/src/ctype.c
_AT_@ -1,9 +1,8 @@
-
 #include <ctype.h>
 
 unsigned char _ctype[255] = {
         _C,_C,_C,_C,_C,_C,_C,_C, /* 0-7 */
- _C,_C|_S,_C|_S,_C|_S,_C|_S,_C|_S,_C,_C, /* 8-15 */
+ _C,_C|_S|_TB,_C|_S,_C|_S,_C|_S,_C|_S,_C,_C, /* 8-15 */
         _C,_C,_C,_C,_C,_C,_C,_C, /* 16-23 */
         _C,_C,_C,_C,_C,_C,_C,_C, /* 24-31 */
         _S|_SP,_P,_P,_P,_P,_P,_P,_P, /* 32-39 */
diff --git a/libc/src/isblank.c b/libc/src/isblank.c
new file mode 100644
index 0000000..9247201
--- /dev/null
+++ b/libc/src/isblank.c
_AT_@ -0,0 +1,11 @@
+/* See LICENSE file for copyright and license details. */
+
+#define __USE_MACROS
+#include <ctype.h>
+#undef isblank
+
+int
+isblank(int c)
+{
+ return _ctype[(unsigned char) c] & (_SP|_TB);
+}
Received on Sat Feb 18 2017 - 18:42:58 CET