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-rw-r--r--3rdparty/plibsys/src/pdir-posix.c378
1 files changed, 378 insertions, 0 deletions
diff --git a/3rdparty/plibsys/src/pdir-posix.c b/3rdparty/plibsys/src/pdir-posix.c
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+++ b/3rdparty/plibsys/src/pdir-posix.c
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+/*
+ * The MIT License
+ *
+ * Copyright (C) 2015-2017 Alexander Saprykin <saprykin.spb@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * 'Software'), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "pdir.h"
+#include "perror.h"
+#include "pfile.h"
+#include "pmem.h"
+#include "pstring.h"
+#include "perror-private.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#if defined (__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 24)
+# define P_DIR_NON_REENTRANT 1
+# elif defined (P_OS_SOLARIS) || defined (P_OS_QNX6) || defined (P_OS_UNIXWARE) || \
+ defined (P_OS_SCO) || defined (P_OS_IRIX) || defined (P_OS_HAIKU)
+# define P_DIR_NEED_BUF_ALLOC 1
+#endif
+
+#ifdef P_DIR_NEED_BUF_ALLOC
+# if defined (P_OS_SCO)
+# define P_DIR_NEED_SIMPLE_R 1
+# endif
+#else
+# if defined (P_OS_BEOS) || defined (P_OS_AMIGA)
+# define P_DIR_NON_REENTRANT 1
+# endif
+#endif
+
+struct PDir_ {
+ DIR * dir;
+ struct dirent *dir_result;
+ pchar *path;
+ pchar *orig_path;
+};
+
+P_LIB_API PDir *
+p_dir_new (const pchar *path,
+ PError **error)
+{
+ PDir *ret;
+ DIR *dir;
+ pchar *pathp;
+
+ if (P_UNLIKELY (path == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_INVALID_ARGUMENT,
+ 0,
+ "Invalid input argument");
+ return NULL;
+ }
+
+ if (P_UNLIKELY ((dir = opendir (path)) == NULL)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call opendir() to open directory stream");
+ return NULL;
+ }
+
+ if (P_UNLIKELY ((ret = p_malloc0 (sizeof (PDir))) == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_NO_RESOURCES,
+ 0,
+ "Failed to allocate memory for directory structure");
+ closedir (dir);
+ return NULL;
+ }
+
+ ret->dir = dir;
+ ret->path = p_strdup (path);
+ ret->orig_path = p_strdup (path);
+
+ pathp = ret->path + strlen (ret->path) - 1;
+
+ if (*pathp == '/' || *pathp == '\\')
+ *pathp = '\0';
+
+ return ret;
+}
+
+P_LIB_API pboolean
+p_dir_create (const pchar *path,
+ pint mode,
+ PError **error)
+{
+ if (P_UNLIKELY (path == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_INVALID_ARGUMENT,
+ 0,
+ "Invalid input argument");
+ return FALSE;
+ }
+
+ if (p_dir_is_exists (path))
+ return TRUE;
+
+ if (P_UNLIKELY (mkdir (path, (mode_t) mode) != 0)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call mkdir() to create directory");
+ return FALSE;
+ } else
+ return TRUE;
+}
+
+P_LIB_API pboolean
+p_dir_remove (const pchar *path,
+ PError **error)
+{
+ if (P_UNLIKELY (path == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_INVALID_ARGUMENT,
+ 0,
+ "Invalid input argument");
+ return FALSE;
+ }
+
+ if (!p_dir_is_exists (path)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_NOT_EXISTS,
+ 0,
+ "Specified directory doesn't exist");
+ return FALSE;
+ }
+
+ if (P_UNLIKELY (rmdir (path) != 0)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call rmdir() to remove directory");
+ return FALSE;
+ } else
+ return TRUE;
+}
+
+P_LIB_API pboolean
+p_dir_is_exists (const pchar *path)
+{
+ struct stat sb;
+
+ if (P_UNLIKELY (path == NULL))
+ return FALSE;
+
+ return (stat (path, &sb) == 0 && S_ISDIR (sb.st_mode)) ? TRUE : FALSE;
+}
+
+P_LIB_API pchar *
+p_dir_get_path (const PDir *dir)
+{
+ if (P_UNLIKELY (dir == NULL))
+ return NULL;
+
+ return p_strdup (dir->orig_path);
+}
+
+P_LIB_API PDirEntry *
+p_dir_get_next_entry (PDir *dir,
+ PError **error)
+{
+ PDirEntry *ret;
+#ifdef P_DIR_NEED_BUF_ALLOC
+ struct dirent *dirent_st;
+#elif !defined (P_DIR_NON_REENTRANT)
+ struct dirent dirent_st;
+#endif
+ struct stat sb;
+ pchar *entry_path;
+ psize path_len;
+#ifdef P_DIR_NEED_BUF_ALLOC
+ pint name_max;
+#endif
+
+ if (P_UNLIKELY (dir == NULL || dir->dir == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_INVALID_ARGUMENT,
+ 0,
+ "Invalid input argument");
+ return NULL;
+ }
+
+#ifdef P_DIR_NEED_BUF_ALLOC
+# if defined (P_OS_SOLARIS)
+ name_max = (pint) (FILENAME_MAX);
+# elif defined (P_OS_SCO) || defined (P_OS_IRIX)
+ name_max = (pint) pathconf (dir->orig_path, _PC_NAME_MAX);
+
+ if (name_max == -1) {
+ if (p_error_get_last_system () == 0)
+ name_max = _POSIX_PATH_MAX;
+ else {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_FAILED,
+ 0,
+ "Failed to get NAME_MAX using pathconf()");
+ return NULL;
+ }
+ }
+# elif defined (P_OS_QNX6) || defined (P_OS_UNIXWARE) || defined (P_OS_HAIKU)
+ name_max = (pint) (NAME_MAX);
+# endif
+
+ if (P_UNLIKELY ((dirent_st = p_malloc0 (sizeof (struct dirent) + name_max + 1)) == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_NO_RESOURCES,
+ 0,
+ "Failed to allocate memory for internal directory entry");
+ return NULL;
+ }
+
+# ifdef P_DIR_NEED_SIMPLE_R
+ p_error_set_last_system (0);
+
+ if ((dir->dir_result = readdir_r (dir->dir, dirent_st)) == NULL) {
+ if (P_UNLIKELY (p_error_get_last_system () != 0)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call readdir_r() to read directory stream");
+ p_free (dirent_st);
+ return NULL;
+ }
+ }
+# else
+ if (P_UNLIKELY (readdir_r (dir->dir, dirent_st, &dir->dir_result) != 0)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call readdir_r() to read directory stream");
+ p_free (dirent_st);
+ return NULL;
+ }
+# endif
+#else
+# ifdef P_DIR_NON_REENTRANT
+ p_error_set_last_system (0);
+
+ if ((dir->dir_result = readdir (dir->dir)) == NULL) {
+ if (P_UNLIKELY (p_error_get_last_system () != 0)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call readdir() to read directory stream");
+ return NULL;
+ }
+ }
+# else
+ if (P_UNLIKELY (readdir_r (dir->dir, &dirent_st, &dir->dir_result) != 0)) {
+ p_error_set_error_p (error,
+ (pint) p_error_get_last_io (),
+ p_error_get_last_system (),
+ "Failed to call readdir_r() to read directory stream");
+ return NULL;
+ }
+# endif
+#endif
+
+ if (dir->dir_result == NULL) {
+#ifdef P_DIR_NEED_BUF_ALLOC
+ p_free (dirent_st);
+#endif
+ return NULL;
+ }
+
+ if (P_UNLIKELY ((ret = p_malloc0 (sizeof (PDirEntry))) == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_NO_RESOURCES,
+ 0,
+ "Failed to allocate memory for directory entry");
+#ifdef P_DIR_NEED_BUF_ALLOC
+ p_free (dirent_st);
+#endif
+ return NULL;
+ }
+
+#ifdef P_DIR_NEED_BUF_ALLOC
+ ret->name = p_strdup (dirent_st->d_name);
+ p_free (dirent_st);
+#else
+# ifdef P_DIR_NON_REENTRANT
+ ret->name = p_strdup (dir->dir_result->d_name);
+# else
+ ret->name = p_strdup (dirent_st.d_name);
+# endif
+#endif
+
+ path_len = strlen (dir->path);
+
+ if (P_UNLIKELY ((entry_path = p_malloc0 (path_len + strlen (ret->name) + 2)) == NULL)) {
+ P_WARNING ("PDir::p_dir_get_next_entry: failed to allocate memory for stat()");
+ ret->type = P_DIR_ENTRY_TYPE_OTHER;
+ return ret;
+ }
+
+ strcat (entry_path, dir->path);
+ *(entry_path + path_len) = '/';
+ strcat (entry_path + path_len + 1, ret->name);
+
+ if (P_UNLIKELY (stat (entry_path, &sb) != 0)) {
+ P_WARNING ("PDir::p_dir_get_next_entry: stat() failed");
+ ret->type = P_DIR_ENTRY_TYPE_OTHER;
+ p_free (entry_path);
+ return ret;
+ }
+
+ p_free (entry_path);
+
+ if (S_ISDIR (sb.st_mode))
+ ret->type = P_DIR_ENTRY_TYPE_DIR;
+ else if (S_ISREG (sb.st_mode))
+ ret->type = P_DIR_ENTRY_TYPE_FILE;
+ else
+ ret->type = P_DIR_ENTRY_TYPE_OTHER;
+
+ return ret;
+}
+
+P_LIB_API pboolean
+p_dir_rewind (PDir *dir,
+ PError **error)
+{
+ if (P_UNLIKELY (dir == NULL || dir->dir == NULL)) {
+ p_error_set_error_p (error,
+ (pint) P_ERROR_IO_INVALID_ARGUMENT,
+ 0,
+ "Invalid input argument");
+ return FALSE;
+ }
+
+ rewinddir (dir->dir);
+
+ return TRUE;
+}
+
+P_LIB_API void
+p_dir_free (PDir *dir)
+{
+ if (P_UNLIKELY (dir == NULL))
+ return;
+
+ if (P_LIKELY (dir->dir != NULL)) {
+ if (P_UNLIKELY (closedir (dir->dir) != 0))
+ P_ERROR ("PDir::p_dir_free: closedir() failed");
+ }
+
+ p_free (dir->path);
+ p_free (dir->orig_path);
+ p_free (dir);
+}
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