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Diffstat (limited to 'Build/source/texk/kpathsea/readable.c')
-rw-r--r--Build/source/texk/kpathsea/readable.c194
1 files changed, 0 insertions, 194 deletions
diff --git a/Build/source/texk/kpathsea/readable.c b/Build/source/texk/kpathsea/readable.c
deleted file mode 100644
index 919bfaa0208..00000000000
--- a/Build/source/texk/kpathsea/readable.c
+++ /dev/null
@@ -1,194 +0,0 @@
-/* readable.c: check if a filename is a readable non-directory file.
-
- Copyright 1993, 1995, 1996, 2008, 2011, 2012, 2016, 2018 Karl Berry.
- Copyright 1998, 1999, 2000, 2001, 2005 Olaf Weber.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this library; if not, see <http://www.gnu.org/licenses/>. */
-
-#include <kpathsea/config.h>
-#include <kpathsea/c-namemx.h>
-#include <kpathsea/c-pathch.h>
-#include <kpathsea/c-pathmx.h>
-#include <kpathsea/c-stat.h>
-#include <kpathsea/pathsearch.h>
-#include <kpathsea/readable.h>
-#include <kpathsea/tex-hush.h>
-
-
-/* If access can read FN, run stat (assigning to stat buffer ST) and
- check that fn is not a directory. Don't check for just being a
- regular file, as it is potentially useful to read fifo's or some
- kinds of devices. */
-
-#ifdef __DJGPP__
-/* `stat' is way too expensive for such a simple job. */
-#define READABLE(kpse, fn, st) \
- (access ((fn), R_OK) == 0 && access ((fn), D_OK) == -1)
-#elif defined (WIN32)
-/* st must be an unsigned int under Windows */
-static boolean
-READABLE(kpathsea kpse, const_string fn, unsigned int st)
-{
- wchar_t *fnw;
- unsigned char *fnn;
- unsigned char *p;
- size_t len = strlen(fn);
-
- fnn = xmalloc(len + 10);
-/*
- Support very long input path name, longer than _MAX_PATH for
- Windows, if it really exists and input name is given in
- full-absolute path in a command line.
- /../, /./, \..\, \.\ should be excluded (2020/06/06)
- More than one adjacent directory separators should be
- excluded. (2020/10/24)
-*/
- p = strstr(fn, ".\\");
- if (!p) {
- p = strstr(fn, "./");
- }
- if (!p && len > 2) {
- p = strstr(fn + 2, "//");
- }
- if (!p && len > 2) {
- p = strstr(fn + 2, "\\\\");
- }
- if (!p && len > 2) {
- p = strstr(fn + 2, "\\/");
- }
- if (!p && len > 2) {
- p = strstr(fn + 2, "/\\");
- }
- if (!p && len > 2 && ((fn[0] == '/' && fn[1] == '/') ||
- (fn[0] == '\\' && fn[1] == '\\' && fn[2] != '?'))) {
- fn += 2;
- strcpy (fnn, "\\\\?\\UNC\\");
- strcat (fnn, fn);
- } else if (!p && len > 2 && fn[1] == ':') {
- strcpy (fnn, "\\\\?\\");
- strcat (fnn, fn);
- } else {
- strcpy (fnn, fn);
- }
-
- for (p = fnn; *p; p++) {
- if (*p == '/')
- *p = '\\';
- }
-
- fnw = get_wstring_from_mbstring(kpse->File_system_codepage, fnn, fnw=NULL);
- if ((st = GetFileAttributesW(fnw)) != 0xFFFFFFFF) {
- /* succeeded */
- errno = 0;
- } else {
- switch(GetLastError()) {
- case ERROR_BUFFER_OVERFLOW:
- errno = ENAMETOOLONG;
- break;
- case ERROR_ACCESS_DENIED:
- errno = EACCES;
- break;
- default :
- errno = EIO; /* meaningless, will make ret=NULL later */
- break;
- }
- }
- free (fnn);
- if (fnw)
- free (fnw);
- return ((st != 0xFFFFFFFF) && !(st & FILE_ATTRIBUTE_DIRECTORY));
-}
-#else /* not __DJGPP__ and not WIN32 */
-#define READABLE(kpse, fn, st) \
- (access((fn), R_OK) == 0 && stat((fn), &(st)) == 0 && !S_ISDIR ((st).st_mode))
-#endif
-
-
-/* POSIX invented the brain-damage of not necessarily truncating
- filename components; the system's behavior is defined by the value of
- the symbol _POSIX_NO_TRUNC, but it can't be changed. */
-
-string
-kpathsea_readable_file (kpathsea kpse, string name)
-{
-#ifdef WIN32
- unsigned int st = 0;
-#else /* ! WIN32 */
- struct stat st;
-#endif
-
- kpathsea_normalize_path (kpse, name);
- if (READABLE (kpse, name, st)) {
- return name;
-
-#ifdef ENAMETOOLONG
- } else if (errno == ENAMETOOLONG) {
- /* Truncate any too-long components in NAME. */
- unsigned c_len = 0; /* Length of current component. */
- char *s = name; /* Position in current component. */
- char *t = name; /* End of allowed length. */
-
- for (; *s; s++) {
- if (c_len <= NAME_MAX) {
- t = s;
- }
-#if defined(WIN32)
- if (kpathsea_IS_KANJI (kpse, s)) {
- s++;
- c_len += 2;
- continue;
- }
-#endif /* WIN32 */
- if (IS_DIR_SEP (*s) || IS_DEVICE_SEP (*s)) {
- if (c_len > NAME_MAX) {
- /* Truncate if past the max for a component. */
- memmove (t, s, strlen (s) + 1);
- s = t;
- }
- /* At a directory delimiter, reset component length. */
- c_len = 0;
- } else {
- c_len++;
- }
- }
- if (c_len > NAME_MAX) {
- /* Truncate if past the max for last component. */
- *t = 0;
- }
-
- /* Perhaps some other error will occur with the truncated name, so
- let's call access again. */
- if (READABLE (kpse, name, st)) /* Success. */
- return name;
-#endif /* ENAMETOOLONG */
-
- } else { /* Some other error. */
- if (errno == EACCES) { /* Maybe warn them if permissions are bad. */
- if (!kpathsea_tex_hush (kpse, "readable")) {
- perror (name);
- }
- }
- }
-
- return NULL;
-}
-
-
-#if defined (KPSE_COMPAT_API)
-string
-kpse_readable_file (string name)
-{
- return kpathsea_readable_file (kpse_def, name);
-}
-#endif