/* Utility to update paths from internal to external forms.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+ 2007, 2011 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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
+the Free Software Foundation; either version 3 of the License, or (at
your option) any later version.
GCC is distributed in the hope that it will be useful,
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
-License along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+License along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file contains routines to update a path, both to canonicalize
the directory format and to handle any prefix translation.
#include "config.h"
#include "system.h"
+#include "coretypes.h"
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
#include <windows.h>
#endif
#include "prefix.h"
+#include "common/common-target.h"
static const char *std_prefix = PREFIX;
-static const char *get_key_value PARAMS ((char *));
-static char *translate_name PARAMS ((char *));
-static char *save_string PARAMS ((const char *, int));
-static void tr PARAMS ((char *, int, int));
+static const char *get_key_value (char *);
+static char *translate_name (char *);
+static char *save_string (const char *, int);
+static void tr (char *, int, int);
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
-static char *lookup_key PARAMS ((char *));
+static char *lookup_key (char *);
static HKEY reg_key = (HKEY) INVALID_HANDLE_VALUE;
#endif
/* Given KEY, as above, return its value. */
static const char *
-get_key_value (key)
- char *key;
+get_key_value (char *key)
{
const char *prefix = 0;
char *temp = 0;
if (prefix == 0)
prefix = std_prefix;
- if (temp)
- free (temp);
+ free (temp);
return prefix;
}
/* Return a copy of a string that has been placed in the heap. */
static char *
-save_string (s, len)
- const char *s;
- int len;
+save_string (const char *s, int len)
{
- char *result = xmalloc (len + 1);
+ char *result = XNEWVEC (char, len + 1);
memcpy (result, s, len);
result[len] = 0;
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
+#ifndef WIN32_REGISTRY_KEY
+# define WIN32_REGISTRY_KEY BASEVER
+#endif
+
/* Look up "key" in the registry, as above. */
static char *
-lookup_key (key)
- char *key;
+lookup_key (char *key)
{
char *dst;
DWORD size;
}
size = 32;
- dst = (char *) xmalloc (size);
+ dst = xmalloc (size);
- res = RegQueryValueExA (reg_key, key, 0, &type, dst, &size);
+ res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
if (res == ERROR_MORE_DATA && type == REG_SZ)
{
- dst = (char *) xrealloc (dst, size);
- res = RegQueryValueExA (reg_key, key, 0, &type, dst, &size);
+ dst = xrealloc (dst, size);
+ res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
}
if (type != REG_SZ || res != ERROR_SUCCESS)
Otherwise, return the given name. */
static char *
-translate_name (name)
- char *name;
+translate_name (char *name)
{
char code;
char *key, *old_name;
/* In a NUL-terminated STRING, replace character C1 with C2 in-place. */
static void
-tr (string, c1, c2)
- char *string;
- int c1, c2;
+tr (char *string, int c1, int c2)
{
do
{
while (*string++);
}
-/* Update PATH using KEY if PATH starts with PREFIX. The returned
- string is always malloc-ed, and the caller is responsible for
- freeing it. */
+/* Update PATH using KEY if PATH starts with PREFIX as a directory.
+ The returned string is always malloc-ed, and the caller is
+ responsible for freeing it. */
char *
-update_path (path, key)
- const char *path;
- const char *key;
+update_path (const char *path, const char *key)
{
char *result, *p;
+ const int len = strlen (std_prefix);
- if (! strncmp (path, std_prefix, strlen (std_prefix)) && key != 0)
+ if (! filename_ncmp (path, std_prefix, len)
+ && (IS_DIR_SEPARATOR(path[len])
+ || path[len] == '\0')
+ && key != 0)
{
bool free_key = false;
free_key = true;
}
- result = concat (key, &path[strlen (std_prefix)], NULL);
+ result = concat (key, &path[len], NULL);
if (free_key)
- free ((char *) key);
+ free (CONST_CAST (char *, key));
result = translate_name (result);
}
else
result = xstrdup (path);
-#ifndef ALWAYS_STRIP_DOTDOT
-#define ALWAYS_STRIP_DOTDOT 0
-#endif
-
p = result;
while (1)
{
p = strchr (p, '.');
if (p == NULL)
break;
- /* Get rid of a leading `./' and replace `/./' with `/'. */
- if (IS_DIR_SEPARATOR (p[1])
- && (p == result || IS_DIR_SEPARATOR (p[-1])))
- {
- src = p + 2;
- /* Be careful about .//foo */
- while (IS_DIR_SEPARATOR (*src))
- ++src;
- dest = p;
- while ((*dest++ = *src++) != 0)
- ;
- }
/* Look for `/../' */
- else if (p[1] == '.'
- && IS_DIR_SEPARATOR (p[2])
- && (p != result && IS_DIR_SEPARATOR (p[-1])))
+ if (p[1] == '.'
+ && IS_DIR_SEPARATOR (p[2])
+ && (p != result && IS_DIR_SEPARATOR (p[-1])))
{
*p = 0;
- if (!ALWAYS_STRIP_DOTDOT && access (result, X_OK) == 0)
+ if (!targetm_common.always_strip_dotdot
+ && access (result, X_OK) == 0)
{
*p = '.';
- p += 3;
+ break;
}
else
{
/* We can't access the dir, so we won't be able to
- access dir/.. either. Strip out dir/.. We know dir
- isn't `.' because we've rid ourselves of `.' path
- components above. */
- dest = p - 1;
- while (dest != result && IS_DIR_SEPARATOR (*dest))
- --dest;
- while (dest != result && IS_DIR_SEPARATOR (dest[-1]))
- --dest;
- /* Don't strip leading `/'. */
- while (IS_DIR_SEPARATOR (*dest))
- ++dest;
+ access dir/.. either. Strip out `dir/../'. If `dir'
+ turns out to be `.', strip one more path component. */
+ dest = p;
+ do
+ {
+ --dest;
+ while (dest != result && IS_DIR_SEPARATOR (*dest))
+ --dest;
+ while (dest != result && !IS_DIR_SEPARATOR (dest[-1]))
+ --dest;
+ }
+ while (dest != result && *dest == '.');
+ /* If we have something like `./..' or `/..', don't
+ strip anything more. */
+ if (*dest == '.' || IS_DIR_SEPARATOR (*dest))
+ {
+ *p = '.';
+ break;
+ }
src = p + 3;
while (IS_DIR_SEPARATOR (*src))
++src;
return result;
}
-/* Reset the standard prefix */
+/* Reset the standard prefix. */
void
-set_std_prefix (prefix, len)
- const char *prefix;
- int len;
+set_std_prefix (const char *prefix, int len)
{
std_prefix = save_string (prefix, len);
}
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