1 files changed, 131 insertions, 0 deletions
diff --git a/lib/dpkg/c-ctype.h b/lib/dpkg/c-ctype.h
new file mode 100644
index 0000000..b04fda8
--- /dev/null
+++ b/lib/dpkg/c-ctype.h
@@ -0,0 +1,131 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * c-ctype.h - ASCII C locale-only functions
+ *
+ * Copyright © 2009-2014 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBDPKG_C_CTYPE_H
+#define LIBDPKG_C_CTYPE_H
+
+#include <stdbool.h>
+
+#include <dpkg/macros.h>
+
+DPKG_BEGIN_DECLS
+
+#define C_CTYPE_BIT(bit)	(1 << (bit))
+
+enum c_ctype_bit {
+	C_CTYPE_BLANK = C_CTYPE_BIT(0),
+	C_CTYPE_WHITE = C_CTYPE_BIT(1),
+	C_CTYPE_SPACE = C_CTYPE_BIT(2),
+	C_CTYPE_UPPER = C_CTYPE_BIT(3),
+	C_CTYPE_LOWER = C_CTYPE_BIT(4),
+	C_CTYPE_DIGIT = C_CTYPE_BIT(5),
+
+	C_CTYPE_ALPHA = C_CTYPE_UPPER | C_CTYPE_LOWER,
+	C_CTYPE_ALNUM = C_CTYPE_ALPHA | C_CTYPE_DIGIT,
+};
+
+bool
+c_isbits(int c, enum c_ctype_bit bits);
+
+/**
+ * Check if the character is [ \t].
+ */
+static inline bool
+c_isblank(int c)
+{
+	return c_isbits(c, C_CTYPE_BLANK);
+}
+
+/**
+ * Check if the character is [ \t\n].
+ */
+static inline bool
+c_iswhite(int c)
+{
+	return c_isbits(c, C_CTYPE_WHITE);
+}
+
+/**
+ * Check if the character is [ \v\t\f\r\n].
+ */
+static inline bool
+c_isspace(int c)
+{
+	return c_isbits(c, C_CTYPE_SPACE);
+}
+
+/**
+ * Check if the character is [0-9].
+ */
+static inline bool
+c_isdigit(int c)
+{
+	return c_isbits(c, C_CTYPE_DIGIT);
+}
+
+/**
+ * Check if the character is [A-Z].
+ */
+static inline bool
+c_isupper(int c)
+{
+	return c_isbits(c, C_CTYPE_UPPER);
+}
+
+/**
+ * Check if the character is [a-z].
+ */
+static inline bool
+c_islower(int c)
+{
+	return c_isbits(c, C_CTYPE_LOWER);
+}
+
+/**
+ * Check if the character is [a-zA-Z].
+ */
+static inline bool
+c_isalpha(int c)
+{
+	return c_isbits(c, C_CTYPE_ALPHA);
+}
+
+/**
+ * Check if the character is [a-zA-Z0-9].
+ */
+static inline bool
+c_isalnum(int c)
+{
+	return c_isbits(c, C_CTYPE_ALNUM);
+}
+
+/**
+ * Maps the character to its lower-case form.
+ */
+static inline int
+c_tolower(int c)
+{
+	return (c_isupper(c) ?
+	        (DPKG_STATIC_CAST(unsigned char, c) & ~0x20) | 0x20 : c);
+}
+
+DPKG_END_DECLS
+
+#endif