/* Shared general utility routines for GDB, the GNU debugger.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "common-defs.h"
#include "common-utils.h"
#include "host-defs.h"
+#include <sys/stat.h>
#include <ctype.h>
/* The xmalloc() (libiberty.h) family of memory management routines.
return xcalloc (1, size);
}
-void
-xfree (void *ptr)
-{
- if (ptr != NULL)
- free (ptr); /* ARI: free */
-}
-
void
xmalloc_failed (size_t size)
{
return str;
}
+/* See documentation in common-utils.h. */
+
+std::string
+string_vprintf (const char* fmt, va_list args)
+{
+ va_list vp;
+ size_t size;
+
+ va_copy (vp, args);
+ size = vsnprintf (NULL, 0, fmt, vp);
+ va_end (vp);
+
+ std::string str (size, '\0');
+
+ /* C++11 and later guarantee std::string uses contiguous memory and
+ always includes the terminating '\0'. */
+ vsprintf (&str[0], fmt, args);
+
+ return str;
+}
+
+
+/* See documentation in common-utils.h. */
+
+void
+string_appendf (std::string &str, const char *fmt, ...)
+{
+ va_list vp;
+
+ va_start (vp, fmt);
+ string_vappendf (str, fmt, vp);
+ va_end (vp);
+}
+
+
+/* See documentation in common-utils.h. */
+
+void
+string_vappendf (std::string &str, const char *fmt, va_list args)
+{
+ va_list vp;
+ int grow_size;
+
+ va_copy (vp, args);
+ grow_size = vsnprintf (NULL, 0, fmt, vp);
+ va_end (vp);
+
+ size_t curr_size = str.size ();
+ str.resize (curr_size + grow_size);
+
+ /* C++11 and later guarantee std::string uses contiguous memory and
+ always includes the terminating '\0'. */
+ vsprintf (&str[curr_size], fmt, args);
+}
+
char *
savestring (const char *ptr, size_t len)
{
/* A const-correct version of the above. */
const char *
-skip_spaces_const (const char *chp)
+skip_spaces (const char *chp)
{
if (chp == NULL)
return NULL;
/* See documentation in common-utils.h. */
const char *
-skip_to_space_const (const char *chp)
+skip_to_space (const char *chp)
{
if (chp == NULL)
return NULL;
return chp;
}
+/* See documentation in common-utils.h. */
+
+char *
+skip_to_space (char *chp)
+{
+ return (char *) skip_to_space ((const char *) chp);
+}
+
/* See common/common-utils.h. */
void
{
std::string ret;
- if (!args.empty ())
+ if (!args.empty () && args[0] != NULL)
{
for (auto s : args)
if (s != NULL)
return ret;
}
+
+/* See common/common-utils.h. */
+
+bool
+is_regular_file (const char *name, int *errno_ptr)
+{
+ struct stat st;
+ const int status = stat (name, &st);
+
+ /* Stat should never fail except when the file does not exist.
+ If stat fails, analyze the source of error and return true
+ unless the file does not exist, to avoid returning false results
+ on obscure systems where stat does not work as expected. */
+
+ if (status != 0)
+ {
+ if (errno != ENOENT)
+ return true;
+ *errno_ptr = ENOENT;
+ return false;
+ }
+
+ if (S_ISREG (st.st_mode))
+ return true;
+
+ if (S_ISDIR (st.st_mode))
+ *errno_ptr = EISDIR;
+ else
+ *errno_ptr = EINVAL;
+ return false;
+}