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Diffstat (limited to 'readline/shell.c')
-rw-r--r--readline/shell.c43
1 files changed, 32 insertions, 11 deletions
diff --git a/readline/shell.c b/readline/shell.c
index b32726c..f1bdc67 100644
--- a/readline/shell.c
+++ b/readline/shell.c
@@ -45,28 +45,49 @@
# include <strings.h>
#endif /* !HAVE_STRING_H */
+#if defined (HAVE_LIMITS_H)
+# include <limits.h>
+#endif
+
#include <fcntl.h>
#include <pwd.h>
#include <stdio.h>
+#include "rlstdc.h"
#include "rlshell.h"
#include "xmalloc.h"
#if !defined (HAVE_GETPW_DECLS)
-extern struct passwd *getpwuid ();
+extern struct passwd *getpwuid PARAMS((uid_t));
#endif /* !HAVE_GETPW_DECLS */
#ifndef NULL
# define NULL 0
#endif
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+/* Nonzero if the integer type T is signed. */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* Bound on length of the string representing an integer value of type T.
+ Subtract one for the sign bit if T is signed;
+ 302 / 1000 is log10 (2) rounded up;
+ add one for integer division truncation;
+ add one more for a minus sign if t is signed. */
+#define INT_STRLEN_BOUND(t) \
+ ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
+ + 1 + TYPE_SIGNED (t))
+
/* All of these functions are resolved from bash if we are linking readline
as part of bash. */
/* Does shell-like quoting using single quotes. */
char *
-single_quote (string)
+sh_single_quote (string)
char *string;
{
register int c;
@@ -97,24 +118,24 @@ single_quote (string)
/* Set the environment variables LINES and COLUMNS to lines and cols,
respectively. */
void
-set_lines_and_columns (lines, cols)
+sh_set_lines_and_columns (lines, cols)
int lines, cols;
{
char *b;
#if defined (HAVE_PUTENV)
- b = xmalloc (24);
+ b = (char *)xmalloc (INT_STRLEN_BOUND (int) + sizeof ("LINES=") + 1);
sprintf (b, "LINES=%d", lines);
putenv (b);
- b = xmalloc (24);
+ b = (char *)xmalloc (INT_STRLEN_BOUND (int) + sizeof ("COLUMNS=") + 1);
sprintf (b, "COLUMNS=%d", cols);
putenv (b);
#else /* !HAVE_PUTENV */
# if defined (HAVE_SETENV)
- b = xmalloc (8);
+ b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
sprintf (b, "%d", lines);
setenv ("LINES", b, 1);
- b = xmalloc (8);
+ b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
sprintf (b, "%d", cols);
setenv ("COLUMNS", b, 1);
# endif /* HAVE_SETENV */
@@ -122,14 +143,14 @@ set_lines_and_columns (lines, cols)
}
char *
-get_env_value (varname)
- char *varname;
+sh_get_env_value (varname)
+ const char *varname;
{
return ((char *)getenv (varname));
}
char *
-get_home_dir ()
+sh_get_home_dir ()
{
char *home_dir;
struct passwd *entry;
@@ -148,7 +169,7 @@ get_home_dir ()
#endif
int
-unset_nodelay_mode (fd)
+sh_unset_nodelay_mode (fd)
int fd;
{
int flags, bflags;