X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fprefix.c;h=c72203c22219082a5ee993143f73ac42e66cf1aa;hb=621b002b1fbe2e8e52eeb5981a6f372a80129541;hp=b7b162aac498e543f594848a797f6a8958ecc46f;hpb=195731ad171662442bca2721616e291e4fce1488;p=pf3gnuchains%2Fgcc-fork.git
diff --git a/gcc/prefix.c b/gcc/prefix.c
index b7b162aac49..c72203c2221 100644
--- a/gcc/prefix.c
+++ b/gcc/prefix.c
@@ -1,11 +1,12 @@
/* Utility to update paths from internal to external forms.
- Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+ 2007 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,
@@ -14,9 +15,8 @@ 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 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
+. */
/* This file contains routines to update a path, both to canonicalize
the directory format and to handle any prefix translation.
@@ -66,6 +66,8 @@ Boston, MA 02111-1307, USA. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
#include
#endif
@@ -73,21 +75,20 @@ Boston, MA 02111-1307, USA. */
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;
@@ -111,11 +112,9 @@ get_key_value (key)
/* 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;
@@ -124,11 +123,14 @@ save_string (s, len)
#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;
@@ -156,13 +158,13 @@ lookup_key (key)
}
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)
@@ -180,8 +182,7 @@ lookup_key (key)
Otherwise, return the given name. */
static char *
-translate_name (name)
- char *name;
+translate_name (char *name)
{
char code;
char *key, *old_name;
@@ -230,9 +231,7 @@ translate_name (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
{
@@ -242,18 +241,20 @@ tr (string, c1, c2)
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;
+ char *result, *p;
+ const int len = strlen (std_prefix);
- if (! strncmp (path, std_prefix, strlen (std_prefix)) && key != 0)
+ if (! strncmp (path, std_prefix, len)
+ && (IS_DIR_SEPARATOR(path[len])
+ || path[len] == '\0')
+ && key != 0)
{
bool free_key = false;
@@ -263,17 +264,74 @@ update_path (path, key)
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)
+ {
+ char *src, *dest;
+
+ p = strchr (p, '.');
+ if (p == NULL)
+ break;
+ /* Look for `/../' */
+ 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)
+ {
+ *p = '.';
+ break;
+ }
+ else
+ {
+ /* We can't access the dir, so we won't be able to
+ 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;
+ p = dest;
+ while ((*dest++ = *src++) != 0)
+ ;
+ }
+ }
+ else
+ ++p;
+ }
+
#ifdef UPDATE_PATH_HOST_CANONICALIZE
/* Perform host dependent canonicalization when needed. */
- UPDATE_PATH_HOST_CANONICALIZE (path);
+ UPDATE_PATH_HOST_CANONICALIZE (result);
#endif
#ifdef DIR_SEPARATOR_2
@@ -290,11 +348,9 @@ update_path (path, key)
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);
}