add strset

Signed-off-by: Mattias Andrée <maandree@operamail.com>

2 files changed, 52 insertions, 0 deletions

diff --git a/include/string.h b/include/string.h
index b3b3e10..b38e849 100644
--- a/include/string.h
+++ b/include/string.h
@@ -254,6 +254,19 @@ void* memccpy(void* restrict, const void* restrict, int, size_t);
  *                   one character passed the last written character.
  */
 void* memcmove(void*, const void*, int, size_t);
+
+/**
+ * Override a NUL byte-terminated memory segment
+ * with a repeated character.
+ * 
+ * This is a slibc extension.
+ * 
+ * @param   str  The beginning of the memory segment.
+ * @param   c    The character (8 bits wide.)
+ * @return       `str` is returned.
+ */
+char* strset(char* str, int c);
+  __GCC_ONLY(__attribute__((__returns_nonnull__, __nonnull__)));
 #endif
 
 /**
diff --git a/src/string/strset.c b/src/string/strset.c
new file mode 100644
index 0000000..c1eca65
--- /dev/null
+++ b/src/string/strset.c
@@ -0,0 +1,39 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program 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 <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+
+
+
+/**
+ * Override a NUL byte-terminated memory segment
+ * with a repeated character.
+ * 
+ * This is a slibc extension.
+ * 
+ * @param   str  The beginning of the memory segment.
+ * @param   c    The character (8 bits wide.)
+ * @return       `str` is returned.
+ */
+char* strset(char* str, int c)
+{
+  char* s = segment;
+  while (*s)
+    *s++ = (char)c;
+  return segment;
+}
+