/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2007 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-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 "dirname.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 <data/settings.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)
-#include <unistd.h>
-#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, MAX (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);
-}
-
-/* Searches for a configuration file with name NAME in the path
- given by PATH, which is 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. */
+/* 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_search_path (const char *base_name, const char *path_)
+fn_search_path (const char *base_name, char **path)
{
- 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 xstrdup (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))
+ for (i = 0; path[i] != NULL; i++)
{
- /* Construct file name. */
- ds_clear (&file);
- ds_put_substring (&file, dir);
- if (!ds_is_empty (&file) && !ISSLASH (ds_last (&file)))
- ds_put_char (&file, '/');
- ds_put_cstr (&file, base_name);
-
- /* 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);
- }
+ const char *dir = path[i];
+ char *file;
+
+ if (!strcmp (dir, "") || !strcmp (dir, "."))
+ file = xstrdup (base_name);
+ else if (ISSLASH (dir[strlen (dir) - 1]))
+ file = xasprintf ("%s%s", dir, base_name);
+ else
+ file = xasprintf ("%s/%s", dir, base_name);
+
+ if (fn_exists (file))
+ return file;
+ free (file);
}
- /* Failure. */
- verbose_msg (2, _("...not found"));
- ds_destroy (&path);
- ds_destroy (&file);
return NULL;
}
}
#endif
-/* 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. */
-
/* File open routine that understands `-' as stdin/stdout and `|cmd'
as a pipe to command `cmd'. Returns resultant FILE on success,
NULL on failure. If NULL is returned then errno is set to a
{
assert (mode[0] == 'r' || mode[0] == 'w' || mode[0] == 'a');
- 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;
+ 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[0] == 'r' ? "r" : "w");
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[0] == 'r' ? "r" : "w");
- local_free (s);
+ 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
return stream;
}
-#if !(defined _WIN32 || defined __WIN32__)
-/* A file's identity. */
+/* 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
struct file_identity *
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)
{
- free (identity);
+ if (identity != NULL)
+ {
+ free (identity->name);
+ free (identity);
+ }
}
/* Compares A and B, returning a strcmp()-type result. */
fn_compare_file_identities (const struct file_identity *a,
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 /* Windows */
-/* 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);
- char cname[PATH_MAX];
-
- if (GetFullPathName (file_name, sizeof cname, cname, NULL))
- identity->normalized_file_name = xstrdup (cname);
- else
- identity->normalized_file_name = xstrdup (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 strcasecmp (a->normalized_file_name, b->normalized_file_name);
+ static char current_dir[] = "";
+
+ return current_dir;
}
-#endif /* Windows */
+
+#endif
+
projects / pspp-builds.git / blobdiff