-/* PSPP - computes sample statistics.
- Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 1997-9, 2000, 2006, 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
-#include "file-name.h"
+#include "data/file-name.h"
#include <ctype.h>
#include <errno.h>
+#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
+#include <sys/stat.h>
+#include <unistd.h>
-#include "intprops.h"
-#include "minmax.h"
-#include "settings.h"
-#include "xreadlink.h"
+#include "data/settings.h"
+#include "libpspp/hash-functions.h"
+#include "libpspp/message.h"
+#include "libpspp/str.h"
+#include "libpspp/version.h"
-#include <libpspp/alloc.h>
-#include <libpspp/message.h>
-#include <libpspp/message.h>
-#include <libpspp/str.h>
-#include <libpspp/verbose-msg.h>
-#include <libpspp/version.h>
+#include "gl/dirname.h"
+#include "gl/intprops.h"
+#include "gl/minmax.h"
+#include "gl/relocatable.h"
+#include "gl/xalloc.h"
+#include "gl/xmalloca.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
-/* PORTME: Everything in this file is system dependent. */
-
-#ifdef unix
-#include <pwd.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include "stat-macros.h"
-#endif
-
-#ifdef __WIN32__
-#define NOGDI
-#define NOUSER
-#define NONLS
-#include <win32/windows.h>
-#endif
-
-#if __DJGPP__
-#include <sys/stat.h>
+#if defined _WIN32 || defined __WIN32__
+#define WIN32_LEAN_AND_MEAN /* avoid including junk */
+#include <windows.h>
#endif
\f
-/* Initialization. */
-
-const char *config_path;
-
-void
-fn_init (void)
-{
- config_path = fn_getenv_default ("STAT_CONFIG_PATH", default_config_path);
-}
-\f
/* Functions for performing operations on file names. */
-
-/* Substitutes $variables in SRC, putting the result in DST,
- properly handling the case where SRC is a substring of DST.
- Variables are as defined by GETENV. Supports $var and ${var}
- syntaxes; $$ substitutes as $. */
-void
-fn_interp_vars (struct substring src, const char *(*getenv) (const char *),
- struct string *dst_)
-{
- struct string dst = DS_EMPTY_INITIALIZER;
- int c;
-
- while ((c = ss_get_char (&src)) != EOF)
- if (c != '$')
- ds_put_char (&dst, c);
- else
- {
- if (ss_match_char (&src, '$') || ss_is_empty (src))
- ds_put_char (&dst, '$');
- else
- {
- struct substring var_name;
- size_t start;
- const char *value;
-
- if (ss_match_char (&src, '('))
- ss_get_until (&src, ')', &var_name);
- else if (ss_match_char (&src, '{'))
- ss_get_until (&src, '}', &var_name);
- else
- ss_get_chars (&src, MIN (1, ss_span (src, ss_cstr (CC_ALNUM))),
- &var_name);
-
- start = ds_length (&dst);
- ds_put_substring (&dst, var_name);
- value = getenv (ds_cstr (&dst) + start);
- ds_truncate (&dst, start);
-
- ds_put_cstr (&dst, value);
- }
- }
-
- ds_swap (&dst, dst_);
- ds_destroy (&dst);
-}
-
-#ifdef unix
-/* Expands csh tilde notation from the path INPUT into a malloc()'d
- returned string. */
+/* Searches for a configuration file with name NAME in the directories given in
+ PATH, which is terminated by a null pointer. Returns the full name of the
+ first file found, which the caller is responsible for freeing with free(),
+ or NULL if none is found. */
char *
-fn_tilde_expand (const char *input)
+fn_search_path (const char *base_name, char **path)
{
- struct string output = DS_EMPTY_INITIALIZER;
- if (input[0] == '~')
- {
- const char *home = NULL;
- const char *remainder = NULL;
- if (input[1] == '/' || input[1] == '\0')
- {
- home = fn_getenv ("HOME");
- remainder = input + 1;
- }
- else
- {
- struct string user_name = DS_EMPTY_INITIALIZER;
- struct passwd *pwd;
-
- ds_assign_substring (&user_name,
- ss_buffer (input + 1,
- strcspn (input + 1, "/")));
- pwd = getpwnam (ds_cstr (&user_name));
- if (pwd != NULL && pwd->pw_dir[0] != '\0')
- {
- home = xstrdup (pwd->pw_dir);
- remainder = input + 1 + ds_length (&user_name);
- }
- ds_destroy (&user_name);
- }
-
- if (home != NULL)
- {
- ds_put_cstr (&output, home);
- if (*remainder != '\0')
- ds_put_cstr (&output, remainder);
- }
- }
- if (ds_is_empty (&output))
- ds_put_cstr (&output, input);
- return ds_cstr (&output);
-}
-#else /* !unix */
-char *
-fn_tilde_expand (const char *input)
-{
- return xstrdup (input);
-}
-#endif /* !unix */
-
-/* Searches for a configuration file with name NAME in the path
- given by PATH, which is tilde- and environment-interpolated.
- Directories in PATH are delimited by ':'. Returns the
- malloc'd full name of the first file found, or NULL if none is
- found.
-
- If PREFIX is non-NULL, then it is prefixed to each file name;
- i.e., it looks like PREFIX/PATH_COMPONENT/NAME. This is not
- done with absolute directories in the path. */
-char *
-fn_search_path (const char *base_name, const char *path_, const char *prefix)
-{
- struct string path;
- struct substring dir_;
- struct string file = DS_EMPTY_INITIALIZER;
- size_t save_idx = 0;
+ size_t i;
if (fn_is_absolute (base_name))
- return fn_tilde_expand (base_name);
-
- /* Interpolate environment variables. */
- ds_init_cstr (&path, path_);
- fn_interp_vars (ds_ss (&path), fn_getenv, &path);
-
- verbose_msg (2, _("searching for \"%s\" in path \"%s\""),
- base_name, ds_cstr (&path));
- while (ds_separate (&path, ss_cstr (":"), &save_idx, &dir_))
- {
- struct string dir;
-
- /* Do tilde expansion. */
- ds_init_substring (&dir, dir_);
- if (ds_first (&dir) == '~')
- {
- char *tmp_str = fn_tilde_expand (ds_cstr (&dir));
- ds_assign_cstr (&dir, tmp_str);
- free (tmp_str);
- }
-
- /* Construct file name. */
- ds_clear (&file);
- if (prefix != NULL && !fn_is_absolute (ds_cstr (&dir)))
- {
- ds_put_cstr (&file, prefix);
- ds_put_char (&file, '/');
- }
- ds_put_cstr (&file, ds_cstr (&dir));
- if (!ds_is_empty (&file) && ds_last (&file) != '/')
- ds_put_char (&file, '/');
- ds_put_cstr (&file, base_name);
- ds_destroy (&dir);
-
- /* Check whether file exists. */
- if (fn_exists (ds_cstr (&file)))
- {
- verbose_msg (2, _("...found \"%s\""), ds_cstr (&file));
- ds_destroy (&path);
- return ds_cstr (&file);
- }
- }
-
- /* Failure. */
- verbose_msg (2, _("...not found"));
- ds_destroy (&path);
- ds_destroy (&file);
- return NULL;
-}
+ return xstrdup (base_name);
-/* fn_normalize(): This very OS-dependent routine canonicalizes
- file name FN1. The file name should not need to be the name of an
- existing file. Returns a malloc()'d copy of the canonical name.
- This function must always succeed; if it needs to bail out then it
- should return xstrdup(FN1). */
-#ifdef unix
-char *
-fn_normalize (const char *file_name)
-{
- const char *src;
- char *fn1, *fn2, *dest;
- int maxlen;
-
- if (fn_is_special (file_name))
- return xstrdup (file_name);
-
- fn1 = fn_tilde_expand (file_name);
-
- /* Follow symbolic links. */
- for (;;)
+ for (i = 0; path[i] != NULL; i++)
{
- fn2 = fn1;
- fn1 = fn_readlink (fn1);
- if (!fn1)
- {
- fn1 = fn2;
- break;
- }
- free (fn2);
- }
+ const char *dir = path[i];
+ char *file;
- maxlen = strlen (fn1) * 2;
- if (maxlen < 31)
- maxlen = 31;
- dest = fn2 = xmalloc (maxlen + 1);
- src = fn1;
-
- if (*src == '/')
- *dest++ = *src++;
- else
- {
- errno = 0;
- while (getcwd (dest, maxlen - (dest - fn2)) == NULL && errno == ERANGE)
- {
- maxlen *= 2;
- dest = fn2 = xrealloc (fn2, maxlen + 1);
- errno = 0;
- }
- if (errno)
- {
- free (fn1);
- free (fn2);
- return NULL;
- }
- dest = strchr (fn2, '\0');
- if (dest - fn2 >= maxlen)
- {
- int ofs = dest - fn2;
- maxlen *= 2;
- fn2 = xrealloc (fn2, maxlen + 1);
- dest = fn2 + ofs;
- }
- if (dest[-1] != '/')
- *dest++ = '/';
- }
-
- for (;;)
- {
- int c, f;
-
- c = *src++;
-
- f = 0;
- if (c == '/' || c == 0)
- {
- /* remove `./', `../' from directory */
- if (dest[-1] == '.' && dest[-2] == '/')
- dest--;
- else if (dest[-1] == '.' && dest[-2] == '.' && dest[-3] == '/')
- {
- dest -= 3;
- if (dest == fn2)
- dest++;
- while (dest[-1] != '/')
- dest--;
- }
- else if (dest[-1] != '/') /* remove extra slashes */
- f = 1;
-
- if (c == 0)
- {
- if (dest[-1] == '/' && dest > fn2 + 1)
- dest--;
- *dest = 0;
- free (fn1);
-
- return xrealloc (fn2, strlen (fn2) + 1);
- }
- }
+ if (!strcmp (dir, "") || !strcmp (dir, "."))
+ file = xstrdup (base_name);
+ else if (ISSLASH (dir[strlen (dir) - 1]))
+ file = xasprintf ("%s%s", dir, base_name);
else
- f = 1;
+ file = xasprintf ("%s/%s", dir, base_name);
- if (f)
- {
- if (dest - fn2 >= maxlen)
- {
- int ofs = dest - fn2;
- maxlen *= 2;
- fn2 = xrealloc (fn2, maxlen + 1);
- dest = fn2 + ofs;
- }
- *dest++ = c;
- }
+ if (fn_exists (file))
+ return file;
+ free (file);
}
-}
-#elif defined (__WIN32__)
-char *
-fn_normalize (const char *fn1)
-{
- DWORD len;
- DWORD success;
- char *fn2;
-
- /* Don't change special file names. */
- if (is_special_file_name (file_name))
- return xstrdup (file_name);
- /* First find the required buffer length. */
- len = GetFullPathName (fn1, 0, NULL, NULL);
- if (!len)
- {
- fn2 = xstrdup (fn1);
- return fn2;
- }
-
- /* Then make a buffer that big. */
- fn2 = xmalloc (len);
- success = GetFullPathName (fn1, len, fn2, NULL);
- if (success >= len || success == 0)
- {
- free (fn2);
- fn2 = xstrdup (fn1);
- return fn2;
- }
- return fn2;
-}
-#elif __BORLANDC__
-char *
-fn_normalize (const char *fn1)
-{
- char *fn2 = _fullpath (NULL, fn1, 0);
- if (fn2)
- {
- char *cp;
- for (cp = fn2; *cp; cp++)
- *cp = toupper ((unsigned char) (*cp));
- return fn2;
- }
- return xstrdup (fn1);
-}
-#elif __DJGPP__
-char *
-fn_normalize (const char *fn1)
-{
- char *fn2 = xmalloc (1024);
- _fixpath (fn1, fn2);
- fn2 = xrealloc (fn2, strlen (fn2) + 1);
- return fn2;
-}
-#else /* not Lose32, Unix, or DJGPP */
-char *
-fn_normalize (const char *fn)
-{
- return xstrdup (fn);
+ return NULL;
}
-#endif /* not Lose32, Unix, or DJGPP */
/* Returns the directory part of FILE_NAME, as a malloc()'d
string. */
char *
fn_dir_name (const char *file_name)
{
- const char *p;
- char *s;
- size_t len;
-
- len = strlen (file_name);
- if (len == 1 && file_name[0] == '/')
- p = file_name + 1;
- else if (len && file_name[len - 1] == '/')
- p = buf_find_reverse (file_name, len - 1, file_name + len - 1, 1);
- else
- p = strrchr (file_name, '/');
- if (p == NULL)
- p = file_name;
-
- s = xmalloc (p - file_name + 1);
- memcpy (s, file_name, p - file_name);
- s[p - file_name] = 0;
-
- return s;
+ return dir_name (file_name);
}
/* Returns the extension part of FILE_NAME as a malloc()'d string.
If FILE_NAME does not have an extension, returns an empty
string. */
char *
-fn_extension (const char *file_name)
+fn_extension (const char *file_name)
{
const char *extension = strrchr (file_name, '.');
if (extension == NULL)
return xstrdup (extension);
}
\f
-#if unix
-/* Returns the current working directory, as a malloc()'d string.
- From libc.info. */
-char *
-fn_get_cwd (void)
-{
- int size = 100;
- char *buffer = xmalloc (size);
-
- for (;;)
- {
- char *value = getcwd (buffer, size);
- if (value != 0)
- return buffer;
-
- size *= 2;
- free (buffer);
- buffer = xmalloc (size);
- }
-}
-#else
-char *
-fn_get_cwd (void)
-{
- int size = 2;
- char *buffer = xmalloc (size);
- if ( buffer)
- {
- buffer[0]='.';
- buffer[1]='\0';
- }
-
- return buffer;
-
-}
-#endif
-\f
/* Find out information about files. */
/* Returns true iff NAME specifies an absolute file name. */
bool
fn_is_absolute (const char *name)
{
-#ifdef unix
- if (name[0] == '/'
- || !strncmp (name, "./", 2)
- || !strncmp (name, "../", 3)
- || name[0] == '~')
- return true;
-#elif defined (__MSDOS__)
- if (name[0] == '\\'
- || !strncmp (name, ".\\", 2)
- || !strncmp (name, "..\\", 3)
- || (name[0] && name[1] == ':'))
- return true;
-#endif
-
- return false;
+ return IS_ABSOLUTE_FILE_NAME (name);
}
-
+
/* Returns true if FILE_NAME is a virtual file that doesn't
really exist on disk, false if it's a real file name. */
bool
{
if (!strcmp (file_name, "-") || !strcmp (file_name, "stdin")
|| !strcmp (file_name, "stdout") || !strcmp (file_name, "stderr")
-#ifdef unix
+#ifdef HAVE_POPEN
|| file_name[0] == '|'
|| (*file_name && file_name[strlen (file_name) - 1] == '|')
#endif
bool
fn_exists (const char *name)
{
-#ifdef unix
struct stat temp;
-
return stat (name, &temp) == 0;
-#else
- FILE *f = fopen (name, "r");
- if (!f)
- return false;
- fclose (f);
- return true;
-#endif
-}
-
-/* Returns the symbolic link value for FILE_NAME as a dynamically
- allocated buffer, or a null pointer on failure. */
-char *
-fn_readlink (const char *file_name)
-{
- return xreadlink (file_name, 32);
}
\f
/* Environment variables. */
\f
/* Basic file handling. */
+#if HAVE_POPEN
/* Used for giving an error message on a set_safer security
violation. */
static FILE *
errno = EPERM;
return NULL;
}
-
-/* As a general comment on the following routines, a `sensible value'
- for errno includes 0 if there is no associated system error. The
- routines will only set errno to 0 if there is an error in a
- callback that sets errno to 0; they themselves won't. */
+#endif
/* File open routine that understands `-' as stdin/stdout and `|cmd'
as a pipe to command `cmd'. Returns resultant FILE on success,
FILE *
fn_open (const char *fn, const char *mode)
{
- assert (mode[0] == 'r' || mode[0] == 'w');
-
- if (mode[0] == 'r' && (!strcmp (fn, "stdin") || !strcmp (fn, "-")))
- return stdin;
- else if (mode[0] == 'w' && (!strcmp (fn, "stdout") || !strcmp (fn, "-")))
- return stdout;
- else if (mode[0] == 'w' && !strcmp (fn, "stderr"))
- return stderr;
-
-#ifdef unix
+ assert (mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a');
+
+ if (mode[0] == 'r')
+ {
+ if (!strcmp (fn, "stdin") || !strcmp (fn, "-"))
+ return stdin;
+ }
+ else
+ {
+ if (!strcmp (fn, "stdout") || !strcmp (fn, "-"))
+ return stdout;
+ if (!strcmp (fn, "stderr"))
+ return stderr;
+ }
+
+#if HAVE_POPEN
if (fn[0] == '|')
{
- if (get_safer_mode ())
+ if (settings_get_safer_mode ())
return safety_violation (fn);
- return popen (&fn[1], mode);
+ return popen (&fn[1], mode[0] == 'r' ? "r" : "w");
}
else if (*fn && fn[strlen (fn) - 1] == '|')
{
char *s;
FILE *f;
- if (get_safer_mode ())
+ if (settings_get_safer_mode ())
return safety_violation (fn);
-
- s = local_alloc (strlen (fn));
+
+ s = xmalloca (strlen (fn));
memcpy (s, fn, strlen (fn) - 1);
s[strlen (fn) - 1] = 0;
-
- f = popen (s, mode);
- local_free (s);
+ f = popen (s, mode[0] == 'r' ? "r" : "w");
+
+ freea (s);
return f;
}
else
#endif
- {
- FILE *f = fopen (fn, mode);
-
- if (f && mode[0] == 'w')
- setvbuf (f, NULL, _IOLBF, 0);
-
- return f;
- }
+ return fopen (fn, mode);
}
/* Counterpart to fn_open that closes file F with name FN; returns 0
int
fn_close (const char *fn, FILE *f)
{
- if (!strcmp (fn, "-"))
+ if (fileno (f) == STDIN_FILENO
+ || fileno (f) == STDOUT_FILENO
+ || fileno (f) == STDERR_FILENO)
return 0;
-#ifdef unix
+#if HAVE_POPEN
else if (fn[0] == '|' || (*fn && fn[strlen (fn) - 1] == '|'))
{
pclose (f);
return fclose (f);
}
-#ifdef unix
-/* A file's identity. */
-struct file_identity
+/* Creates a new file named FN with the given PERMISSIONS bits,
+ and returns a stream for it or a null pointer on failure.
+ MODE should be "w" or "wb". */
+FILE *
+create_stream (const char *fn, const char *mode, mode_t permissions)
+{
+ int fd;
+ FILE *stream;
+
+ fd = open (fn, O_WRONLY | O_CREAT | O_TRUNC, permissions);
+ if (fd < 0)
+ return NULL;
+
+ stream = fdopen (fd, mode);
+ if (stream == NULL)
+ {
+ int save_errno = errno;
+ close (fd);
+ errno = save_errno;
+ }
+
+ return stream;
+}
+
+/* A file's identity:
+
+ - For a file that exists, this is its device and inode.
+
+ - For a file that does not exist, but which has a directory
+ name that exists, this is the device and inode of the
+ directory, plus the file's base name.
+
+ - For a file that does not exist and has a nonexistent
+ directory, this is the file name.
+
+ Windows doesn't have inode numbers, so we just use the name
+ there. */
+struct file_identity
{
dev_t device; /* Device number. */
ino_t inode; /* Inode number. */
+ char *name; /* File name, where needed, otherwise NULL. */
};
/* Returns a pointer to a dynamically allocated structure whose
same file. Returns a null pointer if no information about the
file is available, perhaps because it does not exist. The
caller is responsible for freeing the structure with
- fn_free_identity() when finished. */
+ fn_free_identity() when finished. */
struct file_identity *
-fn_get_identity (const char *file_name)
+fn_get_identity (const char *file_name)
{
- struct stat s;
+ struct file_identity *identity = xmalloc (sizeof *identity);
- if (stat (file_name, &s) == 0)
+#if !(defined _WIN32 || defined __WIN32__)
+ struct stat s;
+ if (lstat (file_name, &s) == 0)
{
- struct file_identity *identity = xmalloc (sizeof *identity);
identity->device = s.st_dev;
identity->inode = s.st_ino;
- return identity;
+ identity->name = NULL;
}
else
- return NULL;
+ {
+ char *dir = dir_name (file_name);
+ if (last_component (file_name) != NULL && stat (dir, &s) == 0)
+ {
+ identity->device = s.st_dev;
+ identity->inode = s.st_ino;
+ identity->name = base_name (file_name);
+ }
+ else
+ {
+ identity->device = 0;
+ identity->inode = 0;
+ identity->name = xstrdup (file_name);
+ }
+ free (dir);
+ }
+#else /* Windows */
+ char cname[PATH_MAX];
+ int ok = GetFullPathName (file_name, sizeof cname, cname, NULL);
+ identity->device = 0;
+ identity->inode = 0;
+ identity->name = xstrdup (ok ? cname : file_name);
+ str_lowercase (identity->name);
+#endif /* Windows */
+
+ return identity;
}
/* Frees IDENTITY obtained from fn_get_identity(). */
void
-fn_free_identity (struct file_identity *identity)
+fn_free_identity (struct file_identity *identity)
{
- free (identity);
+ if (identity != NULL)
+ {
+ free (identity->name);
+ free (identity);
+ }
}
/* Compares A and B, returning a strcmp()-type result. */
int
fn_compare_file_identities (const struct file_identity *a,
- const struct file_identity *b)
+ const struct file_identity *b)
{
- assert (a != NULL);
- assert (b != NULL);
if (a->device != b->device)
return a->device < b->device ? -1 : 1;
+ else if (a->inode != b->inode)
+ return a->inode < b->inode ? -1 : 1;
+ else if (a->name != NULL)
+ return b->name != NULL ? strcmp (a->name, b->name) : 1;
else
- return a->inode < b->inode ? -1 : a->inode > b->inode;
+ return b->name != NULL ? -1 : 0;
}
-#else /* not unix */
-/* A file's identity. */
-struct file_identity
-{
- char *normalized_file_name; /* File's normalized name. */
-};
-/* Returns a pointer to a dynamically allocated structure whose
- value can be used to tell whether two files are actually the
- same file. Returns a null pointer if no information about the
- file is available, perhaps because it does not exist. The
- caller is responsible for freeing the structure with
- fn_free_identity() when finished. */
-struct file_identity *
-fn_get_identity (const char *file_name)
+/* Returns a hash value for IDENTITY. */
+unsigned int
+fn_hash_identity (const struct file_identity *identity)
{
- struct file_identity *identity = xmalloc (sizeof *identity);
- identity->normalized_file_name = fn_normalize (file_name);
- return identity;
+ unsigned int hash = hash_int (identity->device, identity->inode);
+ if (identity->name != NULL)
+ hash = hash_string (identity->name, hash);
+ return hash;
}
-/* Frees IDENTITY obtained from fn_get_identity(). */
-void
-fn_free_identity (struct file_identity *identity)
+#ifdef WIN32
+
+/* Apparently windoze users like to see output dumped into their home directory,
+ not the current directory (!) */
+const char *
+default_output_path (void)
{
- if (identity != NULL)
+ static char *path = NULL;
+
+ if ( path == NULL)
{
- free (identity->normalized_file_name);
- free (identity);
+ /* Windows NT defines HOMEDRIVE and HOMEPATH. But give preference
+ to HOME, because the user can change HOME. */
+
+ const char *home_dir = getenv ("HOME");
+ int i;
+
+ if (home_dir == NULL)
+ {
+ const char *home_drive = getenv ("HOMEDRIVE");
+ const char *home_path = getenv ("HOMEPATH");
+
+ if (home_drive != NULL && home_path != NULL)
+ home_dir = xasprintf ("%s%s",
+ home_drive, home_path);
+ }
+
+ if (home_dir == NULL)
+ home_dir = "c:/users/default"; /* poor default */
+
+ /* Copy home_dir into path. Add a slash at the end but
+ only if there isn't already one there, because Windows
+ treats // specially. */
+ if (home_dir[0] == '\0'
+ || strchr ("/\\", home_dir[strlen (home_dir) - 1]) == NULL)
+ path = xasprintf ("%s%c", home_dir, '/');
+ else
+ path = xstrdup (home_dir);
+
+ for(i = 0; i < strlen (path); i++)
+ if (path[i] == '\\') path[i] = '/';
}
+
+ return path;
}
-/* Compares A and B, returning a strcmp()-type result. */
-int
-fn_compare_file_identities (const struct file_identity *a,
- const struct file_identity *b)
+#else
+
+/* ... whereas the rest of the world just likes it to be
+ put "here" for easy access. */
+const char *
+default_output_path (void)
{
- return strcmp (a->normalized_file_name, b->normalized_file_name);
+ static char current_dir[] = "";
+
+ return current_dir;
}
-#endif /* not unix */
+
+#endif
+
projects / pspp-builds.git / blobdiff