/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
+ 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
#include <config.h>
#include "data/file-name.h"
+#include "data/file-handle-def.h"
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
+
#include <unistd.h>
#include "data/settings.h"
#include "libpspp/hash-functions.h"
#include "libpspp/message.h"
+#include "libpspp/i18n.h"
#include "libpspp/str.h"
#include "libpspp/version.h"
#include "gl/dirname.h"
+#include "gl/dosname.h"
#include "gl/intprops.h"
#include "gl/minmax.h"
#include "gl/relocatable.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
-#if defined _WIN32 || defined __WIN32__
-#define WIN32_LEAN_AND_MEAN /* avoid including junk */
-#include <windows.h>
-#endif
\f
/* Functions for performing operations on file names. */
-/* Searches for a configuration file with name NAME in the directories given in
+
+/* 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 struct file_handle *fh)
+{
+ const char *file_name = fh_get_file_name (fh);
+
+ const char *extension = strrchr (file_name, '.');
+ if (extension == NULL)
+ extension = "";
+ return xstrdup (extension);
+}
+\f
+/* Find out information about files. */
+
+/* Returns true iff NAME specifies an absolute file name. */
+static bool
+fn_is_absolute (const char *name)
+{
+ return IS_ABSOLUTE_FILE_NAME (name);
+}
+
+
+/* Searches for a 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. */
else
file = xasprintf ("%s/%s", dir, base_name);
- if (fn_exists (file))
- return file;
+ struct stat temp;
+ if (( (stat (file, &temp) == 0 ) && ( ! S_ISDIR (temp.st_mode) )))
+ return file;
+
free (file);
}
return NULL;
}
-/* Returns the directory part of FILE_NAME, as a malloc()'d
- string. */
-char *
-fn_dir_name (const char *file_name)
-{
- 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)
-{
- const char *extension = strrchr (file_name, '.');
- if (extension == NULL)
- extension = "";
- return xstrdup (extension);
-}
-\f
-/* Find out information about files. */
-
-/* Returns true iff NAME specifies an absolute file name. */
-bool
-fn_is_absolute (const char *name)
-{
- 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. */
+/* Returns true if file with name NAME exists, and that file is not a
+ directory */
bool
-fn_is_special (const char *file_name)
-{
- if (!strcmp (file_name, "-") || !strcmp (file_name, "stdin")
- || !strcmp (file_name, "stdout") || !strcmp (file_name, "stderr")
-#ifdef HAVE_POPEN
- || file_name[0] == '|'
- || (*file_name && file_name[strlen (file_name) - 1] == '|')
-#endif
- )
- return true;
-
- return false;
-}
-
-/* Returns true if file with name NAME exists. */
-bool
-fn_exists (const char *name)
+fn_exists (const struct file_handle *fh)
{
+ const char *name = fh_get_file_name (fh);
struct stat temp;
- return stat (name, &temp) == 0;
-}
-\f
-/* Environment variables. */
+ if ( stat (name, &temp) != 0 )
+ return false;
-/* Simulates $VER and $ARCH environment variables. */
-const char *
-fn_getenv (const char *s)
-{
- if (!strcmp (s, "VER"))
- return fn_getenv_default ("STAT_VER", bare_version);
- else if (!strcmp (s, "ARCH"))
- return fn_getenv_default ("STAT_ARCH", host_system);
- else
- return getenv (s);
+ return ! S_ISDIR (temp.st_mode);
}
-/* Returns getenv(KEY) if that's non-NULL; else returns DEF. */
-const char *
-fn_getenv_default (const char *key, const char *def)
-{
- const char *value = getenv (key);
- return value ? value : def;
-}
\f
/* Basic file handling. */
static FILE *
safety_violation (const char *fn)
{
- msg (SE, _("Not opening pipe file `%s' because SAFER option set."), fn);
+ msg (SE, _("Not opening pipe file `%s' because %s option set."), fn, "SAFER");
errno = EPERM;
return NULL;
}
NULL on failure. If NULL is returned then errno is set to a
sensible value. */
FILE *
-fn_open (const char *fn, const char *mode)
+fn_fopen (const struct file_handle *fh, const char *mode)
{
+ const char *fn = fh_get_file_name (fh);
+
assert (mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a');
if (mode[0] == 'r')
}
else
#endif
+
+#if WIN32
{
- FILE *f = fopen (fn, mode);
+ wchar_t *ss = convert_to_filename_encoding (fn, strlen (fn), fh_get_file_name_encoding (fh));
+ wchar_t *m = (wchar_t *) recode_string ("UTF-16LE", "ASCII", mode, strlen (mode));
+ FILE *fp = _wfopen (ss, m);
+ free (m);
+ free (ss);
+ return fp;
+ }
+#else
+ return fopen (fn, mode);
+#endif
+}
- if (f && mode[0] != 'r')
- setvbuf (f, NULL, _IOLBF, 0);
+/* File open routine that understands `-' as stdin/stdout. Returns file
+ descriptor on success, otherwise a negative errno value. */
+int
+fn_open (const struct file_handle *fh, int flags, mode_t mode)
+{
+ const char *fn = fh_get_file_name (fh);
- return f;
+ int orig_fd = -1;
+ if ((flags & O_ACCMODE) == O_RDONLY)
+ {
+ if (!strcmp (fn, "stdin") || !strcmp (fn, "-"))
+ orig_fd = STDIN_FILENO;
+ }
+ else
+ {
+ if (!strcmp (fn, "stdout") || !strcmp (fn, "-"))
+ orig_fd = STDOUT_FILENO;
+ else if (!strcmp (fn, "stderr"))
+ orig_fd = STDERR_FILENO;
+ }
+ if (orig_fd >= 0)
+ {
+ int fd = dup (orig_fd);
+ return fd >= 0 ? fd : -errno;
}
+
+#if WIN32
+ wchar_t *ss = convert_to_filename_encoding (fn, strlen (fn), fh_get_file_name_encoding (fh));
+ wchar_t *m = (wchar_t *) recode_string ("UTF-16LE", "ASCII", mode, strlen (mode));
+ int fd = _wopen (fn, flags, mode);
+ free (m);
+ free (ss);
+#else
+ int fd = open (fn, flags, mode);
+#endif
+
+ return fd >= 0 ? fd : -errno;
}
-/* Counterpart to fn_open that closes file F with name FN; returns 0
+/* Counterpart to fn_fopen that closes file F with name FN; returns 0
on success, EOF on failure. If EOF is returned, errno is set to a
sensible value. */
int
-fn_close (const char *fn, FILE *f)
+fn_close (const struct file_handle *fh, FILE *f)
{
+ const char *fn = fh_get_file_name (fh);
if (fileno (f) == STDIN_FILENO
|| fileno (f) == STDOUT_FILENO
|| fileno (f) == STDERR_FILENO)
return fclose (f);
}
-/* 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
- 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)
-{
- struct file_identity *identity = xmalloc (sizeof *identity);
-
-#if !(defined _WIN32 || defined __WIN32__)
- struct stat s;
- if (lstat (file_name, &s) == 0)
- {
- identity->device = s.st_dev;
- identity->inode = s.st_ino;
- identity->name = NULL;
- }
- else
- {
- 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)
-{
- 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)
-{
- 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 b->name != NULL ? -1 : 0;
-}
-
-/* Returns a hash value for IDENTITY. */
-unsigned int
-fn_hash_identity (const struct file_identity *identity)
-{
- unsigned int hash = hash_int (identity->device, identity->inode);
- if (identity->name != NULL)
- hash = hash_string (identity->name, hash);
- return hash;
-}
#ifdef WIN32
{
/* 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;
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