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5 files changed, 369 insertions, 0 deletions

diff --git a/libiberty/mempcpy.c b/libiberty/mempcpy.c
new file mode 100644
index 00000000000..b0dccfa6167
--- /dev/null
+++ b/libiberty/mempcpy.c
@@ -0,0 +1,48 @@
+/* Implement the mempcpy function.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+This file is part of the libiberty library.
+Libiberty is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libiberty 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libiberty; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/*
+
+@deftypefn Supplemental void* mempcpy (void *@var{out}, const void *@var{in}, size_t @var{length})
+
+Copies @var{length} bytes from memory region @var{in} to region
+@var{out}.  Returns a pointer to @var{out} + @var{length}.
+
+@end deftypefn
+
+*/
+
+#include <ansidecl.h>
+#ifdef ANSI_PROTOTYPES
+#include <stddef.h>
+#else
+#define size_t unsigned long
+#endif
+
+extern PTR memcpy PARAMS ((PTR, const PTR, size_t));
+
+PTR
+mempcpy (dst, src, len)
+     PTR dst;
+     const PTR src;
+     size_t len;
+{
+  return (char *) memcpy (dst, src, len) + len;
+}
diff --git a/libiberty/snprintf.c b/libiberty/snprintf.c
new file mode 100644
index 00000000000..89164695b50
--- /dev/null
+++ b/libiberty/snprintf.c
@@ -0,0 +1,65 @@
+/* Implement the snprintf function.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+This file is part of the libiberty library.  This library 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, or (at your option)
+any later version.
+
+This library 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+As a special exception, if you link this library with files
+compiled with a GNU compiler to produce an executable, this does not cause
+the resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why
+the executable file might be covered by the GNU General Public License. */
+
+/*
+
+@deftypefn Supplemental int snprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, ...)
+
+This function is similar to sprintf, but it will print at most @var{n}
+characters.  On error the return value is -1, otherwise it returns the
+number of characters that would have been printed had @var{n} been
+sufficiently large, regardless of the actual value of @var{n}.  Note
+some pre-C99 system libraries do not implement this correctly so users
+cannot generally rely on the return value if the system version of
+this function is used.
+
+@end deftypefn
+
+*/
+
+#include "ansidecl.h"
+
+#ifdef ANSI_PROTOTYPES
+#include <stdarg.h>
+#include <stddef.h>
+#else
+#include <varargs.h>
+#define size_t unsigned long
+#endif
+
+int vsnprintf PARAMS ((char *, size_t, const char *, va_list));
+
+int
+snprintf VPARAMS ((char *s, size_t n, const char *format, ...))
+{
+  int result;
+  VA_OPEN (ap, format);
+  VA_FIXEDARG (ap, char *, s);
+  VA_FIXEDARG (ap, size_t, n);
+  VA_FIXEDARG (ap, const char *, format);
+  result = vsnprintf (s, n, format, ap);
+  VA_CLOSE (ap);
+  return result;
+}
diff --git a/libiberty/stpcpy.c b/libiberty/stpcpy.c
new file mode 100644
index 00000000000..a589642fd88
--- /dev/null
+++ b/libiberty/stpcpy.c
@@ -0,0 +1,49 @@
+/* Implement the stpcpy function.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+This file is part of the libiberty library.
+Libiberty is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libiberty 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libiberty; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/*
+
+@deftypefn Supplemental char* stpcpy (char *@var{dst}, const char *@var{src})
+
+Copies the string @var{src} into @var{dst}.  Returns a pointer to
+@var{dst} + strlen(@var{src}).
+
+@end deftypefn
+
+*/
+
+#include <ansidecl.h>
+#ifdef ANSI_PROTOTYPES
+#include <stddef.h>
+#else
+#define size_t unsigned long
+#endif
+
+extern size_t strlen PARAMS ((const char *));
+extern PTR memcpy PARAMS ((PTR, const PTR, size_t));
+
+char *
+stpcpy (dst, src)
+     char *dst;
+     const char *src;
+{
+  const size_t len = strlen (src);
+  return (char *) memcpy (dst, src, len + 1) + len;
+}
diff --git a/libiberty/stpncpy.c b/libiberty/stpncpy.c
new file mode 100644
index 00000000000..cb67b4dbab1
--- /dev/null
+++ b/libiberty/stpncpy.c
@@ -0,0 +1,54 @@
+/* Implement the stpncpy function.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+This file is part of the libiberty library.
+Libiberty is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+Libiberty 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with libiberty; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/*
+
+@deftypefn Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, size_t @var{len})
+
+Copies the string @var{src} into @var{dst}, copying exactly @var{len}
+and padding with zeros if necessary.  If @var{len} < strlen(@var{src})
+then return @var{dst} + @var{len}, otherwise returns @var{dst} +
+strlen(@var{src}).
+
+@end deftypefn
+
+*/
+
+#include <ansidecl.h>
+#ifdef ANSI_PROTOTYPES
+#include <stddef.h>
+#else
+#define size_t unsigned long
+#endif
+
+extern size_t strlen PARAMS ((const char *));
+extern char *strncpy PARAMS ((char *, const char *, size_t));
+
+char *
+stpncpy (dst, src, len)
+     char *dst;
+     const char *src;
+     size_t len;
+{
+  size_t n = strlen (src);
+  if (n > len)
+    n = len;
+  return strncpy (dst, src, len) + n;
+}
diff --git a/libiberty/vsnprintf.c b/libiberty/vsnprintf.c
new file mode 100644
index 00000000000..fd3dd18a91c
--- /dev/null
+++ b/libiberty/vsnprintf.c
@@ -0,0 +1,153 @@
+/* Implement the vsnprintf function.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
+
+This file is part of the libiberty library.  This library 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, or (at your option)
+any later version.
+
+This library 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+As a special exception, if you link this library with files
+compiled with a GNU compiler to produce an executable, this does not cause
+the resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why
+the executable file might be covered by the GNU General Public License. */
+
+/*
+
+@deftypefn Supplemental int vsnprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, va_list @var{ap})
+
+This function is similar to vsprintf, but it will print at most
+@var{n} characters.  On error the return value is -1, otherwise it
+returns the number of characters that would have been printed had
+@var{n} been sufficiently large, regardless of the actual value of
+@var{n}.  Note some pre-C99 system libraries do not implement this
+correctly so users cannot generally rely on the return value if the
+system version of this function is used.
+
+@end deftypefn
+
+*/
+
+#include "config.h"
+#include "ansidecl.h"
+
+#ifdef ANSI_PROTOTYPES
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#include "libiberty.h"
+
+/* This implementation relies on a working vasprintf.  */
+int
+vsnprintf (s, n, format, ap)
+     char * s;
+     size_t n;
+     const char *format;
+     va_list ap;
+{
+  char *buf = 0;
+  int result = vasprintf (&buf, format, ap);
+
+  if (!buf)
+    return -1;
+  if (result < 0)
+    {
+      free (buf);
+      return -1;
+    }
+
+  result = strlen (buf);
+  if (n > 0)
+    {
+      if ((long) n > result)
+	memcpy (s, buf, result+1);
+      else
+        {
+	  memcpy (s, buf, n-1);
+	  s[n - 1] = 0;
+	}
+    }
+  free (buf);
+  return result;
+}
+
+#ifdef TEST
+/* Set the buffer to a known state.  */
+#define CLEAR(BUF) do { memset ((BUF), 'X', sizeof (BUF)); (BUF)[14] = '\0'; } while (0)
+/* For assertions.  */
+#define VERIFY(P) do { if (!(P)) abort(); } while (0)
+
+static int ATTRIBUTE_PRINTF_3
+checkit VPARAMS ((char *s, size_t n, const char *format, ...))
+{
+  int result;
+  VA_OPEN (ap, format);
+  VA_FIXEDARG (ap, char *, s);
+  VA_FIXEDARG (ap, size_t, n);
+  VA_FIXEDARG (ap, const char *, format);
+  result = vsnprintf (s, n, format, ap);
+  VA_CLOSE (ap);
+  return result;
+}
+
+extern int main PARAMS ((void));
+int
+main ()
+{
+  char buf[128];
+  int status;
+  
+  CLEAR (buf);
+  status = checkit (buf, 10, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "foobar:9\0XXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 9, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "foobar:9\0XXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 8, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "foobar:\0XXXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 7, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "foobar\0XXXXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 6, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "fooba\0XXXXXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 2, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "f\0XXXXXXXXXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 1, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "\0XXXXXXXXXXXXX\0", 15) == 0);
+
+  CLEAR (buf);
+  status = checkit (buf, 0, "%s:%d", "foobar", 9);
+  VERIFY (status==8 && memcmp (buf, "XXXXXXXXXXXXXX\0", 15) == 0);
+
+  return 0;
+}
+#endif /* TEST */