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-rw-r--r--libretro-common/file/file_path.c1381
-rw-r--r--libretro-common/file/file_path_io.c151
2 files changed, 1532 insertions, 0 deletions
diff --git a/libretro-common/file/file_path.c b/libretro-common/file/file_path.c
new file mode 100644
index 0000000..fc11270
--- /dev/null
+++ b/libretro-common/file/file_path.c
@@ -0,0 +1,1381 @@
+/* Copyright (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_path.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+#include <sys/stat.h>
+
+#include <boolean.h>
+#include <file/file_path.h>
+#include <retro_assert.h>
+#include <string/stdstring.h>
+#include <time/rtime.h>
+
+/* TODO: There are probably some unnecessary things on this huge include list now but I'm too afraid to touch it */
+#ifdef __APPLE__
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+#ifdef __HAIKU__
+#include <kernel/image.h>
+#endif
+#ifndef __MACH__
+#include <compat/strl.h>
+#include <compat/posix_string.h>
+#endif
+#include <retro_miscellaneous.h>
+#include <encodings/utf.h>
+
+#ifdef _WIN32
+#include <direct.h>
+#else
+#include <unistd.h> /* stat() is defined here */
+#endif
+
+#if !defined(RARCH_CONSOLE) && defined(RARCH_INTERNAL)
+#ifdef __WINRT__
+#include <uwp/uwp_func.h>
+#endif
+#endif
+
+/* Assume W-functions do not work below Win2K and Xbox platforms */
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
+
+#ifndef LEGACY_WIN32
+#define LEGACY_WIN32
+#endif
+
+#endif
+
+/**
+ * path_get_archive_delim:
+ * @path : path
+ *
+ * Find delimiter of an archive file. Only the first '#'
+ * after a compression extension is considered.
+ *
+ * Returns: pointer to the delimiter in the path if it contains
+ * a path inside a compressed file, otherwise NULL.
+ */
+const char *path_get_archive_delim(const char *path)
+{
+ const char *last_slash = find_last_slash(path);
+ const char *delim = NULL;
+ char buf[5];
+
+ buf[0] = '\0';
+
+ /* We search for delimiters after the last slash
+ * in the file path to avoid capturing delimiter
+ * characters in any parent directory names.
+ * If there are no slashes in the file name, then
+ * the path is just the file basename - in this
+ * case we search the path in its entirety */
+ if (!last_slash)
+ last_slash = path;
+
+ /* Find delimiter position
+ * > Since filenames may contain '#' characters,
+ * must loop until we find the first '#' that
+ * is directly *after* a compression extension */
+ delim = strchr(last_slash, '#');
+
+ while (delim)
+ {
+ /* Check whether this is a known archive type
+ * > Note: The code duplication here is
+ * deliberate, to maximise performance */
+ if (delim - last_slash > 4)
+ {
+ strlcpy(buf, delim - 4, sizeof(buf));
+ buf[4] = '\0';
+
+ string_to_lower(buf);
+
+ /* Check if this is a '.zip', '.apk' or '.7z' file */
+ if (string_is_equal(buf, ".zip") ||
+ string_is_equal(buf, ".apk") ||
+ string_is_equal(buf + 1, ".7z"))
+ return delim;
+ }
+ else if (delim - last_slash > 3)
+ {
+ strlcpy(buf, delim - 3, sizeof(buf));
+ buf[3] = '\0';
+
+ string_to_lower(buf);
+
+ /* Check if this is a '.7z' file */
+ if (string_is_equal(buf, ".7z"))
+ return delim;
+ }
+
+ delim++;
+ delim = strchr(delim, '#');
+ }
+
+ return NULL;
+}
+
+/**
+ * path_get_extension:
+ * @path : path
+ *
+ * Gets extension of file. Only '.'s
+ * after the last slash are considered.
+ *
+ * Returns: extension part from the path.
+ */
+const char *path_get_extension(const char *path)
+{
+ const char *ext;
+ if (!string_is_empty(path) && ((ext = strrchr(path_basename(path), '.'))))
+ return ext + 1;
+ return "";
+}
+
+/**
+ * path_remove_extension:
+ * @path : path
+ *
+ * Mutates path by removing its extension. Removes all
+ * text after and including the last '.'.
+ * Only '.'s after the last slash are considered.
+ *
+ * Returns:
+ * 1) If path has an extension, returns path with the
+ * extension removed.
+ * 2) If there is no extension, returns NULL.
+ * 3) If path is empty or NULL, returns NULL
+ */
+char *path_remove_extension(char *path)
+{
+ char *last = !string_is_empty(path)
+ ? (char*)strrchr(path_basename(path), '.') : NULL;
+ if (!last)
+ return NULL;
+ if (*last)
+ *last = '\0';
+ return path;
+}
+
+/**
+ * path_is_compressed_file:
+ * @path : path
+ *
+ * Checks if path is a compressed file.
+ *
+ * Returns: true (1) if path is a compressed file, otherwise false (0).
+ **/
+bool path_is_compressed_file(const char* path)
+{
+ const char *ext = path_get_extension(path);
+ if (!string_is_empty(ext))
+ if ( string_is_equal_noncase(ext, "zip") ||
+ string_is_equal_noncase(ext, "apk") ||
+ string_is_equal_noncase(ext, "7z"))
+ return true;
+ return false;
+}
+
+/**
+ * fill_pathname:
+ * @out_path : output path
+ * @in_path : input path
+ * @replace : what to replace
+ * @size : buffer size of output path
+ *
+ * FIXME: Verify
+ *
+ * Replaces filename extension with 'replace' and outputs result to out_path.
+ * The extension here is considered to be the string from the last '.'
+ * to the end.
+ *
+ * Only '.'s after the last slash are considered as extensions.
+ * If no '.' is present, in_path and replace will simply be concatenated.
+ * 'size' is buffer size of 'out_path'.
+ * E.g.: in_path = "/foo/bar/baz/boo.c", replace = ".asm" =>
+ * out_path = "/foo/bar/baz/boo.asm"
+ * E.g.: in_path = "/foo/bar/baz/boo.c", replace = "" =>
+ * out_path = "/foo/bar/baz/boo"
+ */
+void fill_pathname(char *out_path, const char *in_path,
+ const char *replace, size_t size)
+{
+ char tmp_path[PATH_MAX_LENGTH];
+ char *tok = NULL;
+
+ tmp_path[0] = '\0';
+
+ strlcpy(tmp_path, in_path, sizeof(tmp_path));
+ if ((tok = (char*)strrchr(path_basename(tmp_path), '.')))
+ *tok = '\0';
+
+ fill_pathname_noext(out_path, tmp_path, replace, size);
+}
+
+/**
+ * fill_pathname_noext:
+ * @out_path : output path
+ * @in_path : input path
+ * @replace : what to replace
+ * @size : buffer size of output path
+ *
+ * Appends a filename extension 'replace' to 'in_path', and outputs
+ * result in 'out_path'.
+ *
+ * Assumes in_path has no extension. If an extension is still
+ * present in 'in_path', it will be ignored.
+ *
+ */
+size_t fill_pathname_noext(char *out_path, const char *in_path,
+ const char *replace, size_t size)
+{
+ strlcpy(out_path, in_path, size);
+ return strlcat(out_path, replace, size);
+}
+
+char *find_last_slash(const char *str)
+{
+ const char *slash = strrchr(str, '/');
+#ifdef _WIN32
+ const char *backslash = strrchr(str, '\\');
+
+ if (!slash || (backslash > slash))
+ return (char*)backslash;
+#endif
+ return (char*)slash;
+}
+
+/**
+ * fill_pathname_slash:
+ * @path : path
+ * @size : size of path
+ *
+ * Assumes path is a directory. Appends a slash
+ * if not already there.
+ **/
+void fill_pathname_slash(char *path, size_t size)
+{
+ size_t path_len;
+ const char *last_slash = find_last_slash(path);
+
+ if (!last_slash)
+ {
+ strlcat(path, PATH_DEFAULT_SLASH(), size);
+ return;
+ }
+
+ path_len = strlen(path);
+ /* Try to preserve slash type. */
+ if (last_slash != (path + path_len - 1))
+ {
+ path[path_len] = last_slash[0];
+ path[path_len+1] = '\0';
+ }
+}
+
+/**
+ * fill_pathname_dir:
+ * @in_dir : input directory path
+ * @in_basename : input basename to be appended to @in_dir
+ * @replace : replacement to be appended to @in_basename
+ * @size : size of buffer
+ *
+ * Appends basename of 'in_basename', to 'in_dir', along with 'replace'.
+ * Basename of in_basename is the string after the last '/' or '\\',
+ * i.e the filename without directories.
+ *
+ * If in_basename has no '/' or '\\', the whole 'in_basename' will be used.
+ * 'size' is buffer size of 'in_dir'.
+ *
+ * E.g..: in_dir = "/tmp/some_dir", in_basename = "/some_content/foo.c",
+ * replace = ".asm" => in_dir = "/tmp/some_dir/foo.c.asm"
+ **/
+size_t fill_pathname_dir(char *in_dir, const char *in_basename,
+ const char *replace, size_t size)
+{
+ const char *base = NULL;
+
+ fill_pathname_slash(in_dir, size);
+ base = path_basename(in_basename);
+ strlcat(in_dir, base, size);
+ return strlcat(in_dir, replace, size);
+}
+
+/**
+ * fill_pathname_base:
+ * @out : output path
+ * @in_path : input path
+ * @size : size of output path
+ *
+ * Copies basename of @in_path into @out_path.
+ **/
+size_t fill_pathname_base(char *out, const char *in_path, size_t size)
+{
+ const char *ptr = path_basename(in_path);
+
+ if (!ptr)
+ ptr = in_path;
+
+ return strlcpy(out, ptr, size);
+}
+
+void fill_pathname_base_noext(char *out,
+ const char *in_path, size_t size)
+{
+ fill_pathname_base(out, in_path, size);
+ path_remove_extension(out);
+}
+
+size_t fill_pathname_base_ext(char *out,
+ const char *in_path, const char *ext,
+ size_t size)
+{
+ fill_pathname_base_noext(out, in_path, size);
+ return strlcat(out, ext, size);
+}
+
+/**
+ * fill_pathname_basedir:
+ * @out_dir : output directory
+ * @in_path : input path
+ * @size : size of output directory
+ *
+ * Copies base directory of @in_path into @out_path.
+ * If in_path is a path without any slashes (relative current directory),
+ * @out_path will get path "./".
+ **/
+void fill_pathname_basedir(char *out_dir,
+ const char *in_path, size_t size)
+{
+ if (out_dir != in_path)
+ strlcpy(out_dir, in_path, size);
+ path_basedir(out_dir);
+}
+
+void fill_pathname_basedir_noext(char *out_dir,
+ const char *in_path, size_t size)
+{
+ fill_pathname_basedir(out_dir, in_path, size);
+ path_remove_extension(out_dir);
+}
+
+/**
+ * fill_pathname_parent_dir_name:
+ * @out_dir : output directory
+ * @in_dir : input directory
+ * @size : size of output directory
+ *
+ * Copies only the parent directory name of @in_dir into @out_dir.
+ * The two buffers must not overlap. Removes trailing '/'.
+ * Returns true on success, false if a slash was not found in the path.
+ **/
+bool fill_pathname_parent_dir_name(char *out_dir,
+ const char *in_dir, size_t size)
+{
+ bool success = false;
+ char *temp = strdup(in_dir);
+ char *last = find_last_slash(temp);
+
+ if (last && last[1] == 0)
+ {
+ *last = '\0';
+ last = find_last_slash(temp);
+ }
+
+ if (last)
+ *last = '\0';
+
+ in_dir = find_last_slash(temp);
+
+ success = in_dir && in_dir[1];
+
+ if (success)
+ strlcpy(out_dir, in_dir + 1, size);
+
+ free(temp);
+ return success;
+}
+
+/**
+ * fill_pathname_parent_dir:
+ * @out_dir : output directory
+ * @in_dir : input directory
+ * @size : size of output directory
+ *
+ * Copies parent directory of @in_dir into @out_dir.
+ * Assumes @in_dir is a directory. Keeps trailing '/'.
+ * If the path was already at the root directory, @out_dir will be an empty string.
+ **/
+void fill_pathname_parent_dir(char *out_dir,
+ const char *in_dir, size_t size)
+{
+ if (out_dir != in_dir)
+ strlcpy(out_dir, in_dir, size);
+ path_parent_dir(out_dir);
+}
+
+/**
+ * fill_dated_filename:
+ * @out_filename : output filename
+ * @ext : extension of output filename
+ * @size : buffer size of output filename
+ *
+ * Creates a 'dated' filename prefixed by 'RetroArch', and
+ * concatenates extension (@ext) to it.
+ *
+ * E.g.:
+ * out_filename = "RetroArch-{month}{day}-{Hours}{Minutes}.{@ext}"
+ **/
+size_t fill_dated_filename(char *out_filename,
+ const char *ext, size_t size)
+{
+ time_t cur_time = time(NULL);
+ struct tm tm_;
+
+ rtime_localtime(&cur_time, &tm_);
+
+ strftime(out_filename, size,
+ "RetroArch-%m%d-%H%M%S", &tm_);
+ return strlcat(out_filename, ext, size);
+}
+
+/**
+ * fill_str_dated_filename:
+ * @out_filename : output filename
+ * @in_str : input string
+ * @ext : extension of output filename
+ * @size : buffer size of output filename
+ *
+ * Creates a 'dated' filename prefixed by the string @in_str, and
+ * concatenates extension (@ext) to it.
+ *
+ * E.g.:
+ * out_filename = "RetroArch-{year}{month}{day}-{Hour}{Minute}{Second}.{@ext}"
+ **/
+void fill_str_dated_filename(char *out_filename,
+ const char *in_str, const char *ext, size_t size)
+{
+ char format[256];
+ struct tm tm_;
+ time_t cur_time = time(NULL);
+
+ format[0] = '\0';
+
+ rtime_localtime(&cur_time, &tm_);
+
+ if (string_is_empty(ext))
+ {
+ strftime(format, sizeof(format), "-%y%m%d-%H%M%S", &tm_);
+ fill_pathname_noext(out_filename, in_str, format, size);
+ }
+ else
+ {
+ strftime(format, sizeof(format), "-%y%m%d-%H%M%S.", &tm_);
+
+ fill_pathname_join_concat_noext(out_filename,
+ in_str, format, ext,
+ size);
+ }
+}
+
+/**
+ * path_basedir:
+ * @path : path
+ *
+ * Extracts base directory by mutating path.
+ * Keeps trailing '/'.
+ **/
+void path_basedir(char *path)
+{
+ char *last = NULL;
+
+ if (strlen(path) < 2)
+ return;
+
+ last = find_last_slash(path);
+
+ if (last)
+ last[1] = '\0';
+ else
+ strlcpy(path, "." PATH_DEFAULT_SLASH(), 3);
+}
+
+/**
+ * path_parent_dir:
+ * @path : path
+ *
+ * Extracts parent directory by mutating path.
+ * Assumes that path is a directory. Keeps trailing '/'.
+ * If the path was already at the root directory, returns empty string
+ **/
+void path_parent_dir(char *path)
+{
+ size_t len = 0;
+
+ if (!path)
+ return;
+
+ len = strlen(path);
+
+ if (len && PATH_CHAR_IS_SLASH(path[len - 1]))
+ {
+ bool path_was_absolute = path_is_absolute(path);
+
+ path[len - 1] = '\0';
+
+ if (path_was_absolute && !find_last_slash(path))
+ {
+ /* We removed the only slash from what used to be an absolute path.
+ * On Linux, this goes from "/" to an empty string and everything works fine,
+ * but on Windows, we went from C:\ to C:, which is not a valid path and that later
+ * gets errornously treated as a relative one by path_basedir and returns "./".
+ * What we really wanted is an empty string. */
+ path[0] = '\0';
+ return;
+ }
+ }
+ path_basedir(path);
+}
+
+/**
+ * path_basename:
+ * @path : path
+ *
+ * Get basename from @path.
+ *
+ * Returns: basename from path.
+ **/
+const char *path_basename(const char *path)
+{
+ /* We cut at the first compression-related hash */
+ const char *delim = path_get_archive_delim(path);
+ if (delim)
+ return delim + 1;
+
+ {
+ /* We cut at the last slash */
+ const char *last = find_last_slash(path);
+ if (last)
+ return last + 1;
+ }
+
+ return path;
+}
+
+/* Specialized version */
+const char *path_basename_nocompression(const char *path)
+{
+ /* We cut at the last slash */
+ const char *last = find_last_slash(path);
+ if (last)
+ return last + 1;
+ return path;
+}
+
+/**
+ * path_is_absolute:
+ * @path : path
+ *
+ * Checks if @path is an absolute path or a relative path.
+ *
+ * Returns: true if path is absolute, false if path is relative.
+ **/
+bool path_is_absolute(const char *path)
+{
+ if (string_is_empty(path))
+ return false;
+
+ if (path[0] == '/')
+ return true;
+
+#if defined(_WIN32)
+ /* Many roads lead to Rome...
+ * Note: Drive letter can only be 1 character long */
+ if (string_starts_with_size(path, "\\\\", STRLEN_CONST("\\\\")) ||
+ string_starts_with_size(path + 1, ":/", STRLEN_CONST(":/")) ||
+ string_starts_with_size(path + 1, ":\\", STRLEN_CONST(":\\")))
+ return true;
+#elif defined(__wiiu__) || defined(VITA)
+ {
+ const char *seperator = strchr(path, ':');
+ if (seperator && (seperator[1] == '/'))
+ return true;
+ }
+#endif
+
+ return false;
+}
+
+/**
+ * path_resolve_realpath:
+ * @buf : input and output buffer for path
+ * @size : size of buffer
+ * @resolve_symlinks : whether to resolve symlinks or not
+ *
+ * Resolves use of ".", "..", multiple slashes etc in absolute paths.
+ *
+ * Relative paths are rebased on the current working dir.
+ *
+ * Returns: @buf if successful, NULL otherwise.
+ * Note: Not implemented on consoles
+ * Note: Symlinks are only resolved on Unix-likes
+ * Note: The current working dir might not be what you expect,
+ * e.g. on Android it is "/"
+ * Use of fill_pathname_resolve_relative() should be prefered
+ **/
+char *path_resolve_realpath(char *buf, size_t size, bool resolve_symlinks)
+{
+#if !defined(RARCH_CONSOLE) && defined(RARCH_INTERNAL)
+#ifdef _WIN32
+ char *ret = NULL;
+ wchar_t abs_path[PATH_MAX_LENGTH];
+ wchar_t *rel_path = utf8_to_utf16_string_alloc(buf);
+
+ if (rel_path)
+ {
+ if (_wfullpath(abs_path, rel_path, PATH_MAX_LENGTH))
+ {
+ char *tmp = utf16_to_utf8_string_alloc(abs_path);
+
+ if (tmp)
+ {
+ strlcpy(buf, tmp, size);
+ free(tmp);
+ ret = buf;
+ }
+ }
+
+ free(rel_path);
+ }
+
+ return ret;
+#else
+ char tmp[PATH_MAX_LENGTH];
+ size_t t;
+ char *p;
+ const char *next;
+ const char *buf_end;
+
+ if (resolve_symlinks)
+ {
+ strlcpy(tmp, buf, sizeof(tmp));
+
+ /* NOTE: realpath() expects at least PATH_MAX_LENGTH bytes in buf.
+ * Technically, PATH_MAX_LENGTH needn't be defined, but we rely on it anyways.
+ * POSIX 2008 can automatically allocate for you,
+ * but don't rely on that. */
+ if (!realpath(tmp, buf))
+ {
+ strlcpy(buf, tmp, size);
+ return NULL;
+ }
+
+ return buf;
+ }
+
+ t = 0; /* length of output */
+ buf_end = buf + strlen(buf);
+
+ if (!path_is_absolute(buf))
+ {
+ size_t len;
+ /* rebase on working directory */
+ if (!getcwd(tmp, PATH_MAX_LENGTH-1))
+ return NULL;
+
+ len = strlen(tmp);
+ t += len;
+
+ if (tmp[len-1] != '/')
+ tmp[t++] = '/';
+
+ if (string_is_empty(buf))
+ goto end;
+
+ p = buf;
+ }
+ else
+ {
+ /* UNIX paths can start with multiple '/', copy those */
+ for (p = buf; *p == '/'; p++)
+ tmp[t++] = '/';
+ }
+
+ /* p points to just after a slash while 'next' points to the next slash
+ * if there are no slashes, they point relative to where one would be */
+ do
+ {
+ next = strchr(p, '/');
+ if (!next)
+ next = buf_end;
+
+ if ((next - p == 2 && p[0] == '.' && p[1] == '.'))
+ {
+ p += 3;
+
+ /* fail for illegal /.., //.. etc */
+ if (t == 1 || tmp[t-2] == '/')
+ return NULL;
+
+ /* delete previous segment in tmp by adjusting size t
+ * tmp[t-1] == '/', find '/' before that */
+ t = t-2;
+ while (tmp[t] != '/')
+ t--;
+ t++;
+ }
+ else if (next - p == 1 && p[0] == '.')
+ p += 2;
+ else if (next - p == 0)
+ p += 1;
+ else
+ {
+ /* fail when truncating */
+ if (t + next-p+1 > PATH_MAX_LENGTH-1)
+ return NULL;
+
+ while (p <= next)
+ tmp[t++] = *p++;
+ }
+
+ }
+ while (next < buf_end);
+
+end:
+ tmp[t] = '\0';
+ strlcpy(buf, tmp, size);
+ return buf;
+#endif
+#endif
+ return NULL;
+}
+
+/**
+ * path_relative_to:
+ * @out : buffer to write the relative path to
+ * @path : path to be expressed relatively
+ * @base : base directory to start out on
+ * @size : size of output buffer
+ *
+ * Turns @path into a path relative to @base and writes it to @out.
+ *
+ * @base is assumed to be a base directory, i.e. a path ending with '/' or '\'.
+ * Both @path and @base are assumed to be absolute paths without "." or "..".
+ *
+ * E.g. path /a/b/e/f.cg with base /a/b/c/d/ turns into ../../e/f.cg
+ **/
+size_t path_relative_to(char *out,
+ const char *path, const char *base, size_t size)
+{
+ size_t i, j;
+ const char *trimmed_path, *trimmed_base;
+
+#ifdef _WIN32
+ /* For different drives, return absolute path */
+ if (strlen(path) >= 2 && strlen(base) >= 2
+ && path[1] == ':' && base[1] == ':'
+ && path[0] != base[0])
+ return strlcpy(out, path, size);
+#endif
+
+ /* Trim common beginning */
+ for (i = 0, j = 0; path[i] && base[i] && path[i] == base[i]; i++)
+ if (path[i] == PATH_DEFAULT_SLASH_C())
+ j = i + 1;
+
+ trimmed_path = path+j;
+ trimmed_base = base+i;
+
+ /* Each segment of base turns into ".." */
+ out[0] = '\0';
+ for (i = 0; trimmed_base[i]; i++)
+ if (trimmed_base[i] == PATH_DEFAULT_SLASH_C())
+ strlcat(out, ".." PATH_DEFAULT_SLASH(), size);
+
+ return strlcat(out, trimmed_path, size);
+}
+
+/**
+ * fill_pathname_resolve_relative:
+ * @out_path : output path
+ * @in_refpath : input reference path
+ * @in_path : input path
+ * @size : size of @out_path
+ *
+ * Joins basedir of @in_refpath together with @in_path.
+ * If @in_path is an absolute path, out_path = in_path.
+ * E.g.: in_refpath = "/foo/bar/baz.a", in_path = "foobar.cg",
+ * out_path = "/foo/bar/foobar.cg".
+ **/
+void fill_pathname_resolve_relative(char *out_path,
+ const char *in_refpath, const char *in_path, size_t size)
+{
+ if (path_is_absolute(in_path))
+ {
+ strlcpy(out_path, in_path, size);
+ return;
+ }
+
+ fill_pathname_basedir(out_path, in_refpath, size);
+ strlcat(out_path, in_path, size);
+ path_resolve_realpath(out_path, size, false);
+}
+
+/**
+ * fill_pathname_join:
+ * @out_path : output path
+ * @dir : directory
+ * @path : path
+ * @size : size of output path
+ *
+ * Joins a directory (@dir) and path (@path) together.
+ * Makes sure not to get two consecutive slashes
+ * between directory and path.
+ **/
+size_t fill_pathname_join(char *out_path,
+ const char *dir, const char *path, size_t size)
+{
+ if (out_path != dir)
+ strlcpy(out_path, dir, size);
+
+ if (*out_path)
+ fill_pathname_slash(out_path, size);
+
+ return strlcat(out_path, path, size);
+}
+
+size_t fill_pathname_join_special_ext(char *out_path,
+ const char *dir, const char *path,
+ const char *last, const char *ext,
+ size_t size)
+{
+ fill_pathname_join(out_path, dir, path, size);
+ if (*out_path)
+ fill_pathname_slash(out_path, size);
+
+ strlcat(out_path, last, size);
+ return strlcat(out_path, ext, size);
+}
+
+size_t fill_pathname_join_concat_noext(char *out_path,
+ const char *dir, const char *path,
+ const char *concat,
+ size_t size)
+{
+ fill_pathname_noext(out_path, dir, path, size);
+ return strlcat(out_path, concat, size);
+}
+
+size_t fill_pathname_join_concat(char *out_path,
+ const char *dir, const char *path,
+ const char *concat,
+ size_t size)
+{
+ fill_pathname_join(out_path, dir, path, size);
+ return strlcat(out_path, concat, size);
+}
+
+void fill_pathname_join_noext(char *out_path,
+ const char *dir, const char *path, size_t size)
+{
+ fill_pathname_join(out_path, dir, path, size);
+ path_remove_extension(out_path);
+}
+
+/**
+ * fill_pathname_join_delim:
+ * @out_path : output path
+ * @dir : directory
+ * @path : path
+ * @delim : delimiter
+ * @size : size of output path
+ *
+ * Joins a directory (@dir) and path (@path) together
+ * using the given delimiter (@delim).
+ **/
+size_t fill_pathname_join_delim(char *out_path, const char *dir,
+ const char *path, const char delim, size_t size)
+{
+ size_t copied;
+ /* behavior of strlcpy is undefined if dst and src overlap */
+ if (out_path == dir)
+ copied = strlen(dir);
+ else
+ copied = strlcpy(out_path, dir, size);
+
+ out_path[copied] = delim;
+ out_path[copied+1] = '\0';
+
+ if (path)
+ copied = strlcat(out_path, path, size);
+ return copied;
+}
+
+size_t fill_pathname_join_delim_concat(char *out_path, const char *dir,
+ const char *path, const char delim, const char *concat,
+ size_t size)
+{
+ fill_pathname_join_delim(out_path, dir, path, delim, size);
+ return strlcat(out_path, concat, size);
+}
+
+/**
+ * fill_short_pathname_representation:
+ * @out_rep : output representation
+ * @in_path : input path
+ * @size : size of output representation
+ *
+ * Generates a short representation of path. It should only
+ * be used for displaying the result; the output representation is not
+ * binding in any meaningful way (for a normal path, this is the same as basename)
+ * In case of more complex URLs, this should cut everything except for
+ * the main image file.
+ *
+ * E.g.: "/path/to/game.img" -> game.img
+ * "/path/to/myarchive.7z#folder/to/game.img" -> game.img
+ */
+size_t fill_short_pathname_representation(char* out_rep,
+ const char *in_path, size_t size)
+{
+ char path_short[PATH_MAX_LENGTH];
+
+ path_short[0] = '\0';
+
+ fill_pathname(path_short, path_basename(in_path), "",
+ sizeof(path_short));
+
+ return strlcpy(out_rep, path_short, size);
+}
+
+void fill_short_pathname_representation_noext(char* out_rep,
+ const char *in_path, size_t size)
+{
+ fill_short_pathname_representation(out_rep, in_path, size);
+ path_remove_extension(out_rep);
+}
+
+void fill_pathname_expand_special(char *out_path,
+ const char *in_path, size_t size)
+{
+#if !defined(RARCH_CONSOLE) && defined(RARCH_INTERNAL)
+ if (in_path[0] == '~')
+ {
+ char *home_dir = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
+
+ home_dir[0] = '\0';
+
+ fill_pathname_home_dir(home_dir,
+ PATH_MAX_LENGTH * sizeof(char));
+
+ if (*home_dir)
+ {
+ size_t src_size = strlcpy(out_path, home_dir, size);
+ retro_assert(src_size < size);
+
+ out_path += src_size;
+ size -= src_size;
+
+ if (!PATH_CHAR_IS_SLASH(out_path[-1]))
+ {
+ src_size = strlcpy(out_path, PATH_DEFAULT_SLASH(), size);
+ retro_assert(src_size < size);
+
+ out_path += src_size;
+ size -= src_size;
+ }
+
+ in_path += 2;
+ }
+
+ free(home_dir);
+ }
+ else if (in_path[0] == ':')
+ {
+ char *application_dir = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
+
+ application_dir[0] = '\0';
+
+ fill_pathname_application_dir(application_dir,
+ PATH_MAX_LENGTH * sizeof(char));
+
+ if (*application_dir)
+ {
+ size_t src_size = strlcpy(out_path, application_dir, size);
+ retro_assert(src_size < size);
+
+ out_path += src_size;
+ size -= src_size;
+
+ if (!PATH_CHAR_IS_SLASH(out_path[-1]))
+ {
+ src_size = strlcpy(out_path, PATH_DEFAULT_SLASH(), size);
+ retro_assert(src_size < size);
+
+ out_path += src_size;
+ size -= src_size;
+ }
+
+ in_path += 2;
+ }
+
+ free(application_dir);
+ }
+#endif
+
+ retro_assert(strlcpy(out_path, in_path, size) < size);
+}
+
+void fill_pathname_abbreviate_special(char *out_path,
+ const char *in_path, size_t size)
+{
+#if !defined(RARCH_CONSOLE) && defined(RARCH_INTERNAL)
+ unsigned i;
+ const char *candidates[3];
+ const char *notations[3];
+ char application_dir[PATH_MAX_LENGTH];
+ char home_dir[PATH_MAX_LENGTH];
+
+ application_dir[0] = '\0';
+ home_dir[0] = '\0';
+
+ /* application_dir could be zero-string. Safeguard against this.
+ *
+ * Keep application dir in front of home, moving app dir to a
+ * new location inside home would break otherwise. */
+
+ /* ugly hack - use application_dir pointer
+ * before filling it in. C89 reasons */
+ candidates[0] = application_dir;
+ candidates[1] = home_dir;
+ candidates[2] = NULL;
+
+ notations [0] = ":";
+ notations [1] = "~";
+ notations [2] = NULL;
+
+ fill_pathname_application_dir(application_dir, sizeof(application_dir));
+ fill_pathname_home_dir(home_dir, sizeof(home_dir));
+
+ for (i = 0; candidates[i]; i++)
+ {
+ if (!string_is_empty(candidates[i]) &&
+ string_starts_with(in_path, candidates[i]))
+ {
+ size_t src_size = strlcpy(out_path, notations[i], size);
+
+ retro_assert(src_size < size);
+
+ out_path += src_size;
+ size -= src_size;
+ in_path += strlen(candidates[i]);
+
+ if (!PATH_CHAR_IS_SLASH(*in_path))
+ {
+ strcpy_literal(out_path, PATH_DEFAULT_SLASH());
+ out_path++;
+ size--;
+ }
+
+ break; /* Don't allow more abbrevs to take place. */
+ }
+ }
+
+#endif
+
+ retro_assert(strlcpy(out_path, in_path, size) < size);
+}
+
+/* Changes the slashes to the correct kind for the os
+ * So forward slash on linux and backslash on Windows */
+void pathname_conform_slashes_to_os(char *path)
+{
+ /* Conform slashes to os standard so we get proper matching */
+ char* p;
+ for (p = path; *p; p++)
+ if (*p == '/' || *p == '\\')
+ *p = PATH_DEFAULT_SLASH_C();
+}
+
+/* Change all shashes to forward so they are more portable between windows and linux */
+void pathname_make_slashes_portable(char *path)
+{
+ /* Conform slashes to os standard so we get proper matching */
+ char* p;
+ for (p = path; *p; p++)
+ if (*p == '/' || *p == '\\')
+ *p = '/';
+}
+
+/* Get the number of slashes in a path, returns an integer */
+int get_pathname_num_slashes(const char *in_path)
+{
+ int num_slashes = 0;
+ int i = 0;
+
+ for (i = 0; i < PATH_MAX_LENGTH; i++)
+ {
+ if (PATH_CHAR_IS_SLASH(in_path[i]))
+ num_slashes++;
+ if (in_path[i] == '\0')
+ break;
+ }
+
+ return num_slashes;
+}
+
+/* Fills the supplied path with either the abbreviated path or the relative path, which ever
+ * one is has less depth / number of slashes
+ * If lengths of abbreviated and relative paths are the same the relative path will be used
+ * in_path can be an absolute, relative or abbreviated path */
+void fill_pathname_abbreviated_or_relative(char *out_path, const char *in_refpath, const char *in_path, size_t size)
+{
+ char in_path_conformed[PATH_MAX_LENGTH];
+ char in_refpath_conformed[PATH_MAX_LENGTH];
+ char expanded_path[PATH_MAX_LENGTH];
+ char absolute_path[PATH_MAX_LENGTH];
+ char relative_path[PATH_MAX_LENGTH];
+ char abbreviated_path[PATH_MAX_LENGTH];
+
+ in_path_conformed[0] = '\0';
+ in_refpath_conformed[0] = '\0';
+ expanded_path[0] = '\0';
+ absolute_path[0] = '\0';
+ relative_path[0] = '\0';
+ abbreviated_path[0] = '\0';
+
+ strcpy_literal(in_path_conformed, in_path);
+ strcpy_literal(in_refpath_conformed, in_refpath);
+
+ pathname_conform_slashes_to_os(in_path_conformed);
+ pathname_conform_slashes_to_os(in_refpath_conformed);
+
+ /* Expand paths which start with :\ to an absolute path */
+ fill_pathname_expand_special(expanded_path,
+ in_path_conformed, sizeof(expanded_path));
+
+ /* Get the absolute path if it is not already */
+ if (path_is_absolute(expanded_path))
+ strlcpy(absolute_path, expanded_path, PATH_MAX_LENGTH);
+ else
+ fill_pathname_resolve_relative(absolute_path,
+ in_refpath_conformed, in_path_conformed, PATH_MAX_LENGTH);
+
+ pathname_conform_slashes_to_os(absolute_path);
+
+ /* Get the relative path and see how many directories long it is */
+ path_relative_to(relative_path, absolute_path,
+ in_refpath_conformed, sizeof(relative_path));
+
+ /* Get the abbreviated path and see how many directories long it is */
+ fill_pathname_abbreviate_special(abbreviated_path,
+ absolute_path, sizeof(abbreviated_path));
+
+ /* Use the shortest path, preferring the relative path*/
+ if ( get_pathname_num_slashes(relative_path) <=
+ get_pathname_num_slashes(abbreviated_path))
+ retro_assert(strlcpy(out_path, relative_path, size) < size);
+ else
+ retro_assert(strlcpy(out_path, abbreviated_path, size) < size);
+}
+
+/**
+ * path_basedir:
+ * @path : path
+ *
+ * Extracts base directory by mutating path.
+ * Keeps trailing '/'.
+ **/
+void path_basedir_wrapper(char *path)
+{
+ char *last = NULL;
+ if (strlen(path) < 2)
+ return;
+
+#ifdef HAVE_COMPRESSION
+ /* We want to find the directory with the archive in basedir. */
+ last = (char*)path_get_archive_delim(path);
+ if (last)
+ *last = '\0';
+#endif
+
+ last = find_last_slash(path);
+
+ if (last)
+ last[1] = '\0';
+ else
+ strlcpy(path, "." PATH_DEFAULT_SLASH(), 3);
+}
+
+#if !defined(RARCH_CONSOLE) && defined(RARCH_INTERNAL)
+void fill_pathname_application_path(char *s, size_t len)
+{
+ size_t i;
+#ifdef __APPLE__
+ CFBundleRef bundle = CFBundleGetMainBundle();
+#endif
+#ifdef _WIN32
+ DWORD ret = 0;
+ wchar_t wstr[PATH_MAX_LENGTH] = {0};
+#endif
+#ifdef __HAIKU__
+ image_info info;
+ int32_t cookie = 0;
+#endif
+ (void)i;
+
+ if (!len)
+ return;
+
+#if defined(_WIN32)
+#ifdef LEGACY_WIN32
+ ret = GetModuleFileNameA(NULL, s, len);
+#else
+ ret = GetModuleFileNameW(NULL, wstr, ARRAY_SIZE(wstr));
+
+ if (*wstr)
+ {
+ char *str = utf16_to_utf8_string_alloc(wstr);
+
+ if (str)
+ {
+ strlcpy(s, str, len);
+ free(str);
+ }
+ }
+#endif
+ s[ret] = '\0';
+#elif defined(__APPLE__)
+ if (bundle)
+ {
+ CFURLRef bundle_url = CFBundleCopyBundleURL(bundle);
+ CFStringRef bundle_path = CFURLCopyPath(bundle_url);
+ CFStringGetCString(bundle_path, s, len, kCFStringEncodingUTF8);
+#ifdef HAVE_COCOATOUCH
+ {
+ /* This needs to be done so that the path becomes
+ * /private/var/... and this
+ * is used consistently throughout for the iOS bundle path */
+ char resolved_bundle_dir_buf[PATH_MAX_LENGTH] = {0};
+ if (realpath(s, resolved_bundle_dir_buf))
+ {
+ strlcpy(s, resolved_bundle_dir_buf, len - 1);
+ strlcat(s, "/", len);
+ }
+ }
+#endif
+
+ CFRelease(bundle_path);
+ CFRelease(bundle_url);
+#ifndef HAVE_COCOATOUCH
+ /* Not sure what this does but it breaks
+ * stuff for iOS, so skipping */
+ retro_assert(strlcat(s, "nobin", len) < len);
+#endif
+ return;
+ }
+#elif defined(__HAIKU__)
+ while (get_next_image_info(0, &cookie, &info) == B_OK)
+ {
+ if (info.type == B_APP_IMAGE)
+ {
+ strlcpy(s, info.name, len);
+ return;
+ }
+ }
+#elif defined(__QNX__)
+ char *buff = malloc(len);
+
+ if (_cmdname(buff))
+ strlcpy(s, buff, len);
+
+ free(buff);
+#else
+ {
+ pid_t pid;
+ static const char *exts[] = { "exe", "file", "path/a.out" };
+ char link_path[255];
+
+ link_path[0] = *s = '\0';
+ pid = getpid();
+
+ /* Linux, BSD and Solaris paths. Not standardized. */
+ for (i = 0; i < ARRAY_SIZE(exts); i++)
+ {
+ ssize_t ret;
+
+ snprintf(link_path, sizeof(link_path), "/proc/%u/%s",
+ (unsigned)pid, exts[i]);
+ ret = readlink(link_path, s, len - 1);
+
+ if (ret >= 0)
+ {
+ s[ret] = '\0';
+ return;
+ }
+ }
+ }
+#endif
+}
+
+void fill_pathname_application_dir(char *s, size_t len)
+{
+#ifdef __WINRT__
+ strlcpy(s, uwp_dir_install, len);
+#else
+ fill_pathname_application_path(s, len);
+ path_basedir_wrapper(s);
+#endif
+}
+
+void fill_pathname_home_dir(char *s, size_t len)
+{
+#ifdef __WINRT__
+ const char *home = uwp_dir_data;
+#else
+ const char *home = getenv("HOME");
+#endif
+ if (home)
+ strlcpy(s, home, len);
+ else
+ *s = 0;
+}
+#endif
+
+bool is_path_accessible_using_standard_io(const char *path)
+{
+#ifdef __WINRT__
+ char relative_path_abbrev[PATH_MAX_LENGTH];
+ fill_pathname_abbreviate_special(relative_path_abbrev,
+ path, sizeof(relative_path_abbrev));
+ return (strlen(relative_path_abbrev) >= 2 )
+ && ( relative_path_abbrev[0] == ':'
+ || relative_path_abbrev[0] == '~')
+ && PATH_CHAR_IS_SLASH(relative_path_abbrev[1]);
+#else
+ return true;
+#endif
+}
diff --git a/libretro-common/file/file_path_io.c b/libretro-common/file/file_path_io.c
new file mode 100644
index 0000000..63587e3
--- /dev/null
+++ b/libretro-common/file/file_path_io.c
@@ -0,0 +1,151 @@
+/* Copyright (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_path_io.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+#include <sys/stat.h>
+
+#include <boolean.h>
+#include <file/file_path.h>
+#include <retro_assert.h>
+#include <compat/strl.h>
+#include <compat/posix_string.h>
+#include <retro_miscellaneous.h>
+#include <string/stdstring.h>
+#define VFS_FRONTEND
+#include <vfs/vfs_implementation.h>
+
+#ifdef _WIN32
+#include <direct.h>
+#else
+#include <unistd.h> /* stat() is defined here */
+#endif
+
+/* TODO/FIXME - globals */
+static retro_vfs_stat_t path_stat_cb = retro_vfs_stat_impl;
+static retro_vfs_mkdir_t path_mkdir_cb = retro_vfs_mkdir_impl;
+
+void path_vfs_init(const struct retro_vfs_interface_info* vfs_info)
+{
+ const struct retro_vfs_interface*
+ vfs_iface = vfs_info->iface;
+
+ path_stat_cb = retro_vfs_stat_impl;
+ path_mkdir_cb = retro_vfs_mkdir_impl;
+
+ if (vfs_info->required_interface_version < PATH_REQUIRED_VFS_VERSION || !vfs_iface)
+ return;
+
+ path_stat_cb = vfs_iface->stat;
+ path_mkdir_cb = vfs_iface->mkdir;
+}
+
+int path_stat(const char *path)
+{
+ return path_stat_cb(path, NULL);
+}
+
+/**
+ * path_is_directory:
+ * @path : path
+ *
+ * Checks if path is a directory.
+ *
+ * Returns: true (1) if path is a directory, otherwise false (0).
+ */
+bool path_is_directory(const char *path)
+{
+ return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_DIRECTORY) != 0;
+}
+
+bool path_is_character_special(const char *path)
+{
+ return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_CHARACTER_SPECIAL) != 0;
+}
+
+bool path_is_valid(const char *path)
+{
+ return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_VALID) != 0;
+}
+
+int32_t path_get_size(const char *path)
+{
+ int32_t filesize = 0;
+ if (path_stat_cb(path, &filesize) != 0)
+ return filesize;
+
+ return -1;
+}
+
+/**
+ * path_mkdir:
+ * @dir : directory
+ *
+ * Create directory on filesystem.
+ *
+ * Returns: true (1) if directory could be created, otherwise false (0).
+ **/
+bool path_mkdir(const char *dir)
+{
+ bool norecurse = false;
+ char *basedir = NULL;
+
+ if (!(dir && *dir))
+ return false;
+
+ /* Use heap. Real chance of stack
+ * overflow if we recurse too hard. */
+ basedir = strdup(dir);
+
+ if (!basedir)
+ return false;
+
+ path_parent_dir(basedir);
+
+ if (!*basedir || !strcmp(basedir, dir))
+ {
+ free(basedir);
+ return false;
+ }
+
+ if ( path_is_directory(basedir)
+ || path_mkdir(basedir))
+ norecurse = true;
+
+ free(basedir);
+
+ if (norecurse)
+ {
+ int ret = path_mkdir_cb(dir);
+
+ /* Don't treat this as an error. */
+ if (ret == -2 && path_is_directory(dir))
+ return true;
+ else if (ret == 0)
+ return true;
+ }
+ return false;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 02:35:56 +0000