#include <stdio.h>
#include <stdlib.h>
+#include "canonicalize.h"
#include "intprops.h"
#include "minmax.h"
#include "settings.h"
-#include "xreadlink.h"
#include <libpspp/alloc.h>
#include <libpspp/message.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>
-#endif
\f
/* Initialization. */
ds_destroy (&dst);
}
-#ifdef unix
-/* Expands csh tilde notation from the path INPUT into a malloc()'d
- returned string. */
-char *
-fn_tilde_expand (const char *input)
-{
- 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.
+ 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. */
fn_search_path (const char *base_name, const char *path_)
{
struct string path;
- struct substring dir_;
+ struct substring dir;
struct string file = DS_EMPTY_INITIALIZER;
size_t save_idx = 0;
if (fn_is_absolute (base_name))
- return fn_tilde_expand (base_name);
+ return xstrdup (base_name);
/* Interpolate environment variables. */
ds_init_cstr (&path, path_);
verbose_msg (2, _("searching for \"%s\" in path \"%s\""),
base_name, ds_cstr (&path));
- while (ds_separate (&path, ss_cstr (":"), &save_idx, &dir_))
+ 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);
- ds_put_cstr (&file, ds_cstr (&dir));
+ ds_put_substring (&file, 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)))
return NULL;
}
-/* 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 (;;)
- {
- fn2 = fn1;
- fn1 = fn_readlink (fn1);
- if (!fn1)
- {
- fn1 = fn2;
- break;
- }
- free (fn2);
- }
-
- 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);
- }
- }
- else
- f = 1;
-
- if (f)
- {
- if (dest - fn2 >= maxlen)
- {
- int ofs = dest - fn2;
- maxlen *= 2;
- fn2 = xrealloc (fn2, maxlen + 1);
- dest = fn2 + ofs;
- }
- *dest++ = c;
- }
- }
-}
-#elif defined (__WIN32__)
-char *
-fn_normalize (const char *fn1)
-{
- DWORD len;
- DWORD success;
- char *fn2;
-
- /* Don't change special file names. */
- if (fn_is_special (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);
-}
-#endif /* not Lose32, Unix, or DJGPP */
-
/* Returns the directory part of FILE_NAME, as a malloc()'d
string. */
char *
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 name[0] == '/';
}
-
+
/* 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;
}
+#endif
/* As a general comment on the following routines, a `sensible value'
for errno includes 0 if there is no associated system error. The
else if (mode[0] == 'w' && !strcmp (fn, "stderr"))
return stderr;
-#ifdef unix
+#if HAVE_POPEN
if (fn[0] == '|')
{
if (get_safer_mode ())
{
if (!strcmp (fn, "-"))
return 0;
-#ifdef unix
+#if HAVE_POPEN
else if (fn[0] == '|' || (*fn && fn[strlen (fn) - 1] == '|'))
{
pclose (f);
fn_get_identity (const char *file_name)
{
struct file_identity *identity = xmalloc (sizeof *identity);
- identity->normalized_file_name = fn_normalize (file_name);
+ char *cname = canonicalize_filename_mode (file_name, CAN_MISSING);
+ if (cname == NULL)
+ cname = xstrdup (file_name);
+ identity->normalized_file_name = cname;
return identity;
}
projects / pspp-builds.git / blobdiff