/* Utility to update paths from internal to external forms.
|
/* Utility to update paths from internal to external forms.
|
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
|
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
|
2007 Free Software Foundation, Inc.
|
2007 Free Software Foundation, Inc.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
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 terms of the GNU Library General Public License as published by
|
the Free Software Foundation; either version 3 of the License, or (at
|
the Free Software Foundation; either version 3 of the License, or (at
|
your option) any later version.
|
your option) any later version.
|
|
|
GCC is distributed in the hope that it will be useful,
|
GCC is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
Library General Public License for more details.
|
Library General Public License for more details.
|
|
|
You should have received a copy of the GNU Library General Public
|
You should have received a copy of the GNU Library General Public
|
License along with GCC; see the file COPYING3. If not see
|
License along with GCC; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
/* This file contains routines to update a path, both to canonicalize
|
/* This file contains routines to update a path, both to canonicalize
|
the directory format and to handle any prefix translation.
|
the directory format and to handle any prefix translation.
|
|
|
This file must be compiled with -DPREFIX= to specify the "prefix"
|
This file must be compiled with -DPREFIX= to specify the "prefix"
|
value used by configure. If a filename does not begin with this
|
value used by configure. If a filename does not begin with this
|
prefix, it will not be affected other than by directory canonicalization.
|
prefix, it will not be affected other than by directory canonicalization.
|
|
|
Each caller of 'update_path' may specify both a filename and
|
Each caller of 'update_path' may specify both a filename and
|
a translation prefix and consist of the name of the package that contains
|
a translation prefix and consist of the name of the package that contains
|
the file ("@GCC", "@BINUTIL", "@GNU", etc).
|
the file ("@GCC", "@BINUTIL", "@GNU", etc).
|
|
|
If the prefix is not specified, the filename will only undergo
|
If the prefix is not specified, the filename will only undergo
|
directory canonicalization.
|
directory canonicalization.
|
|
|
If it is specified, the string given by PREFIX will be replaced
|
If it is specified, the string given by PREFIX will be replaced
|
by the specified prefix (with a '@' in front unless the prefix begins
|
by the specified prefix (with a '@' in front unless the prefix begins
|
with a '$') and further translation will be done as follows
|
with a '$') and further translation will be done as follows
|
until none of the two conditions below are met:
|
until none of the two conditions below are met:
|
|
|
1) If the filename begins with '@', the string between the '@' and
|
1) If the filename begins with '@', the string between the '@' and
|
the end of the name or the first '/' or directory separator will
|
the end of the name or the first '/' or directory separator will
|
be considered a "key" and looked up as follows:
|
be considered a "key" and looked up as follows:
|
|
|
-- If this is a Win32 OS, then the Registry will be examined for
|
-- If this is a Win32 OS, then the Registry will be examined for
|
an entry of "key" in
|
an entry of "key" in
|
|
|
HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\<KEY>
|
HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\<KEY>
|
|
|
if found, that value will be used. <KEY> defaults to GCC version
|
if found, that value will be used. <KEY> defaults to GCC version
|
string, but can be overridden at configuration time.
|
string, but can be overridden at configuration time.
|
|
|
-- If not found (or not a Win32 OS), the environment variable
|
-- If not found (or not a Win32 OS), the environment variable
|
key_ROOT (the value of "key" concatenated with the constant "_ROOT")
|
key_ROOT (the value of "key" concatenated with the constant "_ROOT")
|
is tried. If that fails, then PREFIX (see above) is used.
|
is tried. If that fails, then PREFIX (see above) is used.
|
|
|
2) If the filename begins with a '$', the rest of the string up
|
2) If the filename begins with a '$', the rest of the string up
|
to the end or the first '/' or directory separator will be used
|
to the end or the first '/' or directory separator will be used
|
as an environment variable, whose value will be returned.
|
as an environment variable, whose value will be returned.
|
|
|
Once all this is done, any '/' will be converted to DIR_SEPARATOR,
|
Once all this is done, any '/' will be converted to DIR_SEPARATOR,
|
if they are different.
|
if they are different.
|
|
|
NOTE: using resolve_keyed_path under Win32 requires linking with
|
NOTE: using resolve_keyed_path under Win32 requires linking with
|
advapi32.dll. */
|
advapi32.dll. */
|
|
|
|
|
#include "config.h"
|
#include "config.h"
|
#include "system.h"
|
#include "system.h"
|
#include "coretypes.h"
|
#include "coretypes.h"
|
#include "tm.h"
|
#include "tm.h"
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
#include <windows.h>
|
#include <windows.h>
|
#endif
|
#endif
|
#include "prefix.h"
|
#include "prefix.h"
|
|
|
static const char *std_prefix = PREFIX;
|
static const char *std_prefix = PREFIX;
|
|
|
static const char *get_key_value (char *);
|
static const char *get_key_value (char *);
|
static char *translate_name (char *);
|
static char *translate_name (char *);
|
static char *save_string (const char *, int);
|
static char *save_string (const char *, int);
|
static void tr (char *, int, int);
|
static void tr (char *, int, int);
|
|
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
static char *lookup_key (char *);
|
static char *lookup_key (char *);
|
static HKEY reg_key = (HKEY) INVALID_HANDLE_VALUE;
|
static HKEY reg_key = (HKEY) INVALID_HANDLE_VALUE;
|
#endif
|
#endif
|
|
|
/* Given KEY, as above, return its value. */
|
/* Given KEY, as above, return its value. */
|
|
|
static const char *
|
static const char *
|
get_key_value (char *key)
|
get_key_value (char *key)
|
{
|
{
|
const char *prefix = 0;
|
const char *prefix = 0;
|
char *temp = 0;
|
char *temp = 0;
|
|
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
prefix = lookup_key (key);
|
prefix = lookup_key (key);
|
#endif
|
#endif
|
|
|
if (prefix == 0)
|
if (prefix == 0)
|
prefix = getenv (temp = concat (key, "_ROOT", NULL));
|
prefix = getenv (temp = concat (key, "_ROOT", NULL));
|
|
|
if (prefix == 0)
|
if (prefix == 0)
|
prefix = std_prefix;
|
prefix = std_prefix;
|
|
|
if (temp)
|
if (temp)
|
free (temp);
|
free (temp);
|
|
|
return prefix;
|
return prefix;
|
}
|
}
|
|
|
/* Return a copy of a string that has been placed in the heap. */
|
/* Return a copy of a string that has been placed in the heap. */
|
|
|
static char *
|
static char *
|
save_string (const char *s, int len)
|
save_string (const char *s, int len)
|
{
|
{
|
char *result = XNEWVEC (char, len + 1);
|
char *result = XNEWVEC (char, len + 1);
|
|
|
memcpy (result, s, len);
|
memcpy (result, s, len);
|
result[len] = 0;
|
result[len] = 0;
|
return result;
|
return result;
|
}
|
}
|
|
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
#if defined(_WIN32) && defined(ENABLE_WIN32_REGISTRY)
|
|
|
#ifndef WIN32_REGISTRY_KEY
|
#ifndef WIN32_REGISTRY_KEY
|
# define WIN32_REGISTRY_KEY BASEVER
|
# define WIN32_REGISTRY_KEY BASEVER
|
#endif
|
#endif
|
|
|
/* Look up "key" in the registry, as above. */
|
/* Look up "key" in the registry, as above. */
|
|
|
static char *
|
static char *
|
lookup_key (char *key)
|
lookup_key (char *key)
|
{
|
{
|
char *dst;
|
char *dst;
|
DWORD size;
|
DWORD size;
|
DWORD type;
|
DWORD type;
|
LONG res;
|
LONG res;
|
|
|
if (reg_key == (HKEY) INVALID_HANDLE_VALUE)
|
if (reg_key == (HKEY) INVALID_HANDLE_VALUE)
|
{
|
{
|
res = RegOpenKeyExA (HKEY_LOCAL_MACHINE, "SOFTWARE", 0,
|
res = RegOpenKeyExA (HKEY_LOCAL_MACHINE, "SOFTWARE", 0,
|
KEY_READ, ®_key);
|
KEY_READ, ®_key);
|
|
|
if (res == ERROR_SUCCESS)
|
if (res == ERROR_SUCCESS)
|
res = RegOpenKeyExA (reg_key, "Free Software Foundation", 0,
|
res = RegOpenKeyExA (reg_key, "Free Software Foundation", 0,
|
KEY_READ, ®_key);
|
KEY_READ, ®_key);
|
|
|
if (res == ERROR_SUCCESS)
|
if (res == ERROR_SUCCESS)
|
res = RegOpenKeyExA (reg_key, WIN32_REGISTRY_KEY, 0,
|
res = RegOpenKeyExA (reg_key, WIN32_REGISTRY_KEY, 0,
|
KEY_READ, ®_key);
|
KEY_READ, ®_key);
|
|
|
if (res != ERROR_SUCCESS)
|
if (res != ERROR_SUCCESS)
|
{
|
{
|
reg_key = (HKEY) INVALID_HANDLE_VALUE;
|
reg_key = (HKEY) INVALID_HANDLE_VALUE;
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
size = 32;
|
size = 32;
|
dst = xmalloc (size);
|
dst = xmalloc (size);
|
|
|
res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
|
res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
|
if (res == ERROR_MORE_DATA && type == REG_SZ)
|
if (res == ERROR_MORE_DATA && type == REG_SZ)
|
{
|
{
|
dst = xrealloc (dst, size);
|
dst = xrealloc (dst, size);
|
res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
|
res = RegQueryValueExA (reg_key, key, 0, &type, (LPBYTE) dst, &size);
|
}
|
}
|
|
|
if (type != REG_SZ || res != ERROR_SUCCESS)
|
if (type != REG_SZ || res != ERROR_SUCCESS)
|
{
|
{
|
free (dst);
|
free (dst);
|
dst = 0;
|
dst = 0;
|
}
|
}
|
|
|
return dst;
|
return dst;
|
}
|
}
|
#endif
|
#endif
|
|
|
/* If NAME, a malloc-ed string, starts with a '@' or '$', apply the
|
/* If NAME, a malloc-ed string, starts with a '@' or '$', apply the
|
translation rules above and return a newly malloc-ed name.
|
translation rules above and return a newly malloc-ed name.
|
Otherwise, return the given name. */
|
Otherwise, return the given name. */
|
|
|
static char *
|
static char *
|
translate_name (char *name)
|
translate_name (char *name)
|
{
|
{
|
char code;
|
char code;
|
char *key, *old_name;
|
char *key, *old_name;
|
const char *prefix;
|
const char *prefix;
|
int keylen;
|
int keylen;
|
|
|
for (;;)
|
for (;;)
|
{
|
{
|
code = name[0];
|
code = name[0];
|
if (code != '@' && code != '$')
|
if (code != '@' && code != '$')
|
break;
|
break;
|
|
|
for (keylen = 0;
|
for (keylen = 0;
|
(name[keylen + 1] != 0 && !IS_DIR_SEPARATOR (name[keylen + 1]));
|
(name[keylen + 1] != 0 && !IS_DIR_SEPARATOR (name[keylen + 1]));
|
keylen++)
|
keylen++)
|
;
|
;
|
|
|
key = (char *) alloca (keylen + 1);
|
key = (char *) alloca (keylen + 1);
|
strncpy (key, &name[1], keylen);
|
strncpy (key, &name[1], keylen);
|
key[keylen] = 0;
|
key[keylen] = 0;
|
|
|
if (code == '@')
|
if (code == '@')
|
{
|
{
|
prefix = get_key_value (key);
|
prefix = get_key_value (key);
|
if (prefix == 0)
|
if (prefix == 0)
|
prefix = std_prefix;
|
prefix = std_prefix;
|
}
|
}
|
else
|
else
|
prefix = getenv (key);
|
prefix = getenv (key);
|
|
|
if (prefix == 0)
|
if (prefix == 0)
|
prefix = PREFIX;
|
prefix = PREFIX;
|
|
|
/* We used to strip trailing DIR_SEPARATORs here, but that can
|
/* We used to strip trailing DIR_SEPARATORs here, but that can
|
sometimes yield a result with no separator when one was coded
|
sometimes yield a result with no separator when one was coded
|
and intended by the user, causing two path components to run
|
and intended by the user, causing two path components to run
|
together. */
|
together. */
|
|
|
old_name = name;
|
old_name = name;
|
name = concat (prefix, &name[keylen + 1], NULL);
|
name = concat (prefix, &name[keylen + 1], NULL);
|
free (old_name);
|
free (old_name);
|
}
|
}
|
|
|
return name;
|
return name;
|
}
|
}
|
|
|
/* In a NUL-terminated STRING, replace character C1 with C2 in-place. */
|
/* In a NUL-terminated STRING, replace character C1 with C2 in-place. */
|
static void
|
static void
|
tr (char *string, int c1, int c2)
|
tr (char *string, int c1, int c2)
|
{
|
{
|
do
|
do
|
{
|
{
|
if (*string == c1)
|
if (*string == c1)
|
*string = c2;
|
*string = c2;
|
}
|
}
|
while (*string++);
|
while (*string++);
|
}
|
}
|
|
|
/* Update PATH using KEY if PATH starts with PREFIX as a directory.
|
/* Update PATH using KEY if PATH starts with PREFIX as a directory.
|
The returned string is always malloc-ed, and the caller is
|
The returned string is always malloc-ed, and the caller is
|
responsible for freeing it. */
|
responsible for freeing it. */
|
|
|
char *
|
char *
|
update_path (const char *path, const char *key)
|
update_path (const char *path, const char *key)
|
{
|
{
|
char *result, *p;
|
char *result, *p;
|
const int len = strlen (std_prefix);
|
const int len = strlen (std_prefix);
|
|
|
if (! strncmp (path, std_prefix, len)
|
if (! strncmp (path, std_prefix, len)
|
&& (IS_DIR_SEPARATOR(path[len])
|
&& (IS_DIR_SEPARATOR(path[len])
|
|| path[len] == '\0')
|
|| path[len] == '\0')
|
&& key != 0)
|
&& key != 0)
|
{
|
{
|
bool free_key = false;
|
bool free_key = false;
|
|
|
if (key[0] != '$')
|
if (key[0] != '$')
|
{
|
{
|
key = concat ("@", key, NULL);
|
key = concat ("@", key, NULL);
|
free_key = true;
|
free_key = true;
|
}
|
}
|
|
|
result = concat (key, &path[len], NULL);
|
result = concat (key, &path[len], NULL);
|
if (free_key)
|
if (free_key)
|
free ((char *) key);
|
free ((char *) key);
|
result = translate_name (result);
|
result = translate_name (result);
|
}
|
}
|
else
|
else
|
result = xstrdup (path);
|
result = xstrdup (path);
|
|
|
#ifndef ALWAYS_STRIP_DOTDOT
|
#ifndef ALWAYS_STRIP_DOTDOT
|
#define ALWAYS_STRIP_DOTDOT 0
|
#define ALWAYS_STRIP_DOTDOT 0
|
#endif
|
#endif
|
|
|
p = result;
|
p = result;
|
while (1)
|
while (1)
|
{
|
{
|
char *src, *dest;
|
char *src, *dest;
|
|
|
p = strchr (p, '.');
|
p = strchr (p, '.');
|
if (p == NULL)
|
if (p == NULL)
|
break;
|
break;
|
/* Look for `/../' */
|
/* Look for `/../' */
|
if (p[1] == '.'
|
if (p[1] == '.'
|
&& IS_DIR_SEPARATOR (p[2])
|
&& IS_DIR_SEPARATOR (p[2])
|
&& (p != result && IS_DIR_SEPARATOR (p[-1])))
|
&& (p != result && IS_DIR_SEPARATOR (p[-1])))
|
{
|
{
|
*p = 0;
|
*p = 0;
|
if (!ALWAYS_STRIP_DOTDOT && access (result, X_OK) == 0)
|
if (!ALWAYS_STRIP_DOTDOT && access (result, X_OK) == 0)
|
{
|
{
|
*p = '.';
|
*p = '.';
|
break;
|
break;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* We can't access the dir, so we won't be able to
|
/* We can't access the dir, so we won't be able to
|
access dir/.. either. Strip out `dir/../'. If `dir'
|
access dir/.. either. Strip out `dir/../'. If `dir'
|
turns out to be `.', strip one more path component. */
|
turns out to be `.', strip one more path component. */
|
dest = p;
|
dest = p;
|
do
|
do
|
{
|
{
|
--dest;
|
--dest;
|
while (dest != result && IS_DIR_SEPARATOR (*dest))
|
while (dest != result && IS_DIR_SEPARATOR (*dest))
|
--dest;
|
--dest;
|
while (dest != result && !IS_DIR_SEPARATOR (dest[-1]))
|
while (dest != result && !IS_DIR_SEPARATOR (dest[-1]))
|
--dest;
|
--dest;
|
}
|
}
|
while (dest != result && *dest == '.');
|
while (dest != result && *dest == '.');
|
/* If we have something like `./..' or `/..', don't
|
/* If we have something like `./..' or `/..', don't
|
strip anything more. */
|
strip anything more. */
|
if (*dest == '.' || IS_DIR_SEPARATOR (*dest))
|
if (*dest == '.' || IS_DIR_SEPARATOR (*dest))
|
{
|
{
|
*p = '.';
|
*p = '.';
|
break;
|
break;
|
}
|
}
|
src = p + 3;
|
src = p + 3;
|
while (IS_DIR_SEPARATOR (*src))
|
while (IS_DIR_SEPARATOR (*src))
|
++src;
|
++src;
|
p = dest;
|
p = dest;
|
while ((*dest++ = *src++) != 0)
|
while ((*dest++ = *src++) != 0)
|
;
|
;
|
}
|
}
|
}
|
}
|
else
|
else
|
++p;
|
++p;
|
}
|
}
|
|
|
#ifdef UPDATE_PATH_HOST_CANONICALIZE
|
#ifdef UPDATE_PATH_HOST_CANONICALIZE
|
/* Perform host dependent canonicalization when needed. */
|
/* Perform host dependent canonicalization when needed. */
|
UPDATE_PATH_HOST_CANONICALIZE (result);
|
UPDATE_PATH_HOST_CANONICALIZE (result);
|
#endif
|
#endif
|
|
|
#ifdef DIR_SEPARATOR_2
|
#ifdef DIR_SEPARATOR_2
|
/* Convert DIR_SEPARATOR_2 to DIR_SEPARATOR. */
|
/* Convert DIR_SEPARATOR_2 to DIR_SEPARATOR. */
|
if (DIR_SEPARATOR_2 != DIR_SEPARATOR)
|
if (DIR_SEPARATOR_2 != DIR_SEPARATOR)
|
tr (result, DIR_SEPARATOR_2, DIR_SEPARATOR);
|
tr (result, DIR_SEPARATOR_2, DIR_SEPARATOR);
|
#endif
|
#endif
|
|
|
#if defined (DIR_SEPARATOR) && !defined (DIR_SEPARATOR_2)
|
#if defined (DIR_SEPARATOR) && !defined (DIR_SEPARATOR_2)
|
if (DIR_SEPARATOR != '/')
|
if (DIR_SEPARATOR != '/')
|
tr (result, '/', DIR_SEPARATOR);
|
tr (result, '/', DIR_SEPARATOR);
|
#endif
|
#endif
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Reset the standard prefix. */
|
/* Reset the standard prefix. */
|
void
|
void
|
set_std_prefix (const char *prefix, int len)
|
set_std_prefix (const char *prefix, int len)
|
{
|
{
|
std_prefix = save_string (prefix, len);
|
std_prefix = save_string (prefix, len);
|
}
|
}
|
|
|
