[PATCH v4 02/12] ctype: support iscntrl, ispunct, isxdigit and isprint

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

A new table sane_ctype2[] is added, otherwise we'll need to OR with
current bits in sane_ctype[] and that looks ugly.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 ctype.c           | 18 ++++++++++++++++++
 git-compat-util.h | 13 +++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/ctype.c b/ctype.c
index faeaf34..b4bf48a 100644
--- a/ctype.c
+++ b/ctype.c
@@ -26,6 +26,24 @@ const unsigned char sane_ctype[256] = {
 	/* Nothing in the 128.. range */
 };
 
+enum {
+	CN = GIT_CNTRL,
+	PU = GIT_PUNCT,
+	XD = GIT_XDIGIT,
+};
+
+const unsigned char sane_ctype2[256] = {
+	CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, /*    0..15 */
+	CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, CN, /*   16..31 */
+	0,  PU, PU, PU, PU, PU, PU, PU, PU, PU, PU, PU, PU, PU, PU, PU, /*   32..47 */
+	XD, XD, XD, XD, XD, XD, XD, XD, XD, XD, PU, PU, PU, PU, PU, PU, /*   48..63 */
+	PU, 0,	XD, 0,	XD, 0,	XD, 0,	0,  0,	0,  0,	0,  0,	0,  0,	/*   64..79 */
+	0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  PU, PU, PU, PU, PU, /*   80..95 */
+	PU, 0,	XD, 0,	XD, 0,	XD, 0,	0,  0,	0,  0,	0,  0,	0,  0,	/*  96..111 */
+	0,  0,	0,  0,	0,  0,	0,  0,	0,  0,	0,  PU, PU, PU, PU, CN, /* 112..127 */
+	/* Nothing in the 128.. range */
+};
+
 /* For case-insensitive kwset */
 const char tolower_trans_tbl[256] = {
 	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
diff --git a/git-compat-util.h b/git-compat-util.h
index f8b859c..ea11694 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -510,14 +510,23 @@ extern const char tolower_trans_tbl[256];
 #undef isupper
 #undef tolower
 #undef toupper
+#undef iscntrl
+#undef ispunct
+#undef isxdigit
+#undef isprint
 extern const unsigned char sane_ctype[256];
+extern const unsigned char sane_ctype2[256];
 #define GIT_SPACE 0x01
 #define GIT_DIGIT 0x02
 #define GIT_ALPHA 0x04
 #define GIT_GLOB_SPECIAL 0x08
 #define GIT_REGEX_SPECIAL 0x10
 #define GIT_PATHSPEC_MAGIC 0x20
+#define GIT_CNTRL 0x01
+#define GIT_PUNCT 0x02
+#define GIT_XDIGIT 0x04
 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
+#define sane_istest2(x,mask) ((sane_ctype2[(unsigned char)(x)] & (mask)) != 0)
 #define isascii(x) (((x) & ~0x7f) == 0)
 #define isspace(x) sane_istest(x,GIT_SPACE)
 #define isdigit(x) sane_istest(x,GIT_DIGIT)
@@ -527,6 +536,10 @@ extern const unsigned char sane_ctype[256];
 #define isupper(x) sane_iscase(x, 0)
 #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
 #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
+#define iscntrl(x) sane_istest2(x, GIT_CNTRL)
+#define ispunct(x) sane_istest2(x, GIT_PUNCT)
+#define isxdigit(x) sane_istest2(x, GIT_XDIGIT)
+#define isprint(x) (isalnum(x) || isspace(x) || ispunct(x))
 #define tolower(x) sane_case((unsigned char)(x), 0x20)
 #define toupper(x) sane_case((unsigned char)(x), 0)
 #define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC)
-- 
1.7.12.1.406.g6ab07c4