C get file name

C get file name. std::string base = base_name<std::string>("some/path/file. This method takes a file path as its input and returns the file name without the path. "); while ((dir = readdir(d)) != NULL) printf("%s\n", dir->d_name); closedir(d); return(0); We can also take the directory name as input from the user, and can also create a simple C program to search for a particular file in a directory. uasset). Exceptions. [edit] path filename()const; (since C++17) Returns the generic-format filename component of the path. Substring(fileName. ab1. Dec 21, 2011 · You could write a function with a signature like: char *filename_from_path(const char *fullpath); that takes in a full path and returns a new string with just the filename. So, if we did this in main (): >FILE *fp = fopen ("test. That will dump the directory listing to a file instead of showing it on the screen. __FILE__. PDF. GetFrame(0). QFileDialog: force file name. GetFiles will give you an array of fullpaths of the files contained in the Directory, whereas the DirectoryInfo approach will give you an array of FileInfo, which contains more info about each file, such as filename, extension, size, modified time, etc. There is an excellent answer from Shreevardhan below with this source code: #include <string>. path. 2. it is a request for a function to obtain the name of the file opened by any given file pointer. XXXXXX might be OK). You can easily create text files using any simple text editors such as Notepad. Syntax: public static string GetFileName General C++ Programming; get name of FILE* in c . The following code snippet returns the file name. You can use the following code for getting all files in a directory. GetBytes ("New file. A single file, identified by its inode number, may have any number of links (a. txt", "r"); Then passed fp to another function like this: >myfunc (fp); How would myfunc know the name of the file was test. GetFileName (myPath)The following is the complete code −Example Live Demousing System; using System. DWORD errVal = ERROR_SUCCESS; HANDLE dir; WIN32_FIND_DATA file_data; CString file_name,full_file_name; Feb 12, 2016 · QFileDialog : get file name. answered Nov 29, 2010 at 15:54. //Find us the filename, and return in Jun 27, 2022 · string lastFolderName = Path. mp4". Their names all start with double underscores. g. const FString fileName = FPaths::GetCleanFilename (filePath); The standard predefined macros are specified by the relevant language standards, so they are available with all compilers that implement those standards. #include <stdio. And I do not know if this function is reliable for my project. FILE *f; char *name; /* OR char name[MAX] */. This attribute returns the path of the current file, including the file name. c: #include <stdio. getFileName() will return the whole path, not just The File Name. Within the extension parameters, adding the :parts parameter (a. #include <RestartManager. GetFileName( Path. extension". txt") return "C:\Temp\". How should I write a routine in C to get the file name "test. Jul 25, 2011 · 1. "names") associated with it. Diagnostics. It's possible for developers to call _B directly or for _B to be called from As others have mentioned, the name of your executable is contained in argv[0]. How To Get The Owner Of A Unix File Using C. ' Jul 25, 2011 · 1. – crashmstr. txt to the end of that. " and ". XXXXXX at the end (so /tmp/program. namespace fs = std::filesystem; int main() {. . File path formats on Windows systems; File and Stream I/O; How to: Read Text from a File; How to: Write Text to a File Sep 8, 2015 · 1. Dec 19, 2013 · As an aside. And even if it does have a name, there's no guarantee that you have permission to use it or even determine it. How to separate file name and file Sep 9, 2008 · With C++17 and its std::filesystem::path::extension (the library is the successor to boost::filesystem) you would make your statement more expressive than using e. Jul 6, 2014 · 3. Currently I'm using the following code to split the path by '\' and then split again by '. c. txt`. We can then use the os. Path. Text = "C:\Users\Elias\Desktop\image. ext, but GetFileName running under Windows-based platforms can correctly return the file name from a Unix-based path like /tmp/myfile. PS M:\Scripts> split-path "servername\pqr\ab1. Sample. #include <filesystem>. To use run-time dynamic linking, load Psapi. Mine come from a list of plain file names and are prefixed with directories using functions in the makefile at a later stage. c hacks) produces the result ‘ src/ . Method 2 - Using strlen () Jul 17, 2012 · How to get file name from a whole path by c++. There are two versions of the basename() function: the GNU version and the POSIX version. Lambdas are anonymous functions that you can use to create delegates or expression tree types. Share I program in WPF C#. ofstream constructor may not take std::string, so you need to use . The path is a string retrieved from a database. I have e. Mar 12, 2017 · I want to extract the filename from a file path in C#. s" ? Thanks a lot. Before 2. May throw implementation-defined exceptions. The type of arguments are inferred, so it is equivalent to (string fullPath) => Path. And, of course, there's Aug 2, 2019 · The problem is that each source file is compiled individually and thus the report gets overwritten every time the compiler is invoked. 20 it was a member called f_dentry and from 2. }while(NextFile); Close. Parameters. h>. 0. The code is run over each line: First the path is interpreted as an IO object, for which an extension can be identified/extracted. get name of FILE* in c. txt. 9. c; linux; Share. If you're really worried, then use mkdtemp() to create a unique directory under ${TMPDIR:-/tmp}, and then create a unique name within that temporary To find out what those date and time values are, you can access the File System Information property using: DateTime dtCreationTime = oFileInfo. You can use readlink on /proc/self/fd/NNN where NNN is the file descriptor. Sep 12, 2023 · The Filesystem library provides facilities for performing operations on file systems and their components, such as paths, regular files, and directories. Connect it to a file on disk. This method is part of the <filesystem> library added in C++17. I would like to extract the file name and discard the directory path using MS Visual Studio 2005. Function Signature: public String getName() Function Syntax: file. Example 10-21. and under Windows this isn't much easier either: Sep 5, 2023 · std::filesystem::path. " CString dirpath="d:\\mydir". There's no guarantee that a file has only one name (even if you don't follow symlinks). GetFileName ()` method. void _B(const char* file, int line) { #define B() _B(__FILE__, __LINE__) This is by no means a foolproof solution though. To extract just the file name, simply rfind() or find_last_of() the last '/' and/or '\' char in the string, depending on platform, and then substr() everything after it. Because \ is a legal file name on Unix, GetFileName running under Unix-based platforms cannot correctly return the file name from a Windows-based path like C:\mydir\myfile. How can I do this? Thanks for answers. – Mar 16, 2017 · Unfortunately output produces size and permissions only for files that are in the main directory, for the files in subdirectories it is printed only 0 as size and ----- as permissions. /. Therefore, you can call stat on each entry and retrieve metadata about the file. GetFileName(f) is a lambda expression and f is a string argument for this particular lambda. To ensure correct resolution of symbols, add Psapi. g I am trying to grab the raw filename without the extension from the filename passed in arguments: int main ( int argc, char *argv[] ) { // Check to make sure there is a single argument if You have the full path of a filename, e. From a command prompt window, CD into the directory in question and then type. Here's a discussion on how to do this under Linux: Getting Filename from file descriptor in C. 8 parts. So, you can find the file name in this header. ’. anonymous_user_cfbde766 (anonymous_user_cfbde766) April 22, 2015, 2:25pm 2. Mar 19, 2019 · In a C program, I have a file path in a string (specifically, this is the exe name stored in argv[0]). This function returns the Name of the given file object. guarantee that a file still has a name. c_str(). The most common way to get the file name from a file path is to use the `Path. (It is a bit more complicated than that, because files that are open have additional links that This method does not verify that the path or file name exists. txt? This is what was asked for: > if in a Jun 29, 2013 · ofstream createFile; createFile. cpp -lstdc++fs Get File Name using C++ std::string functions Because \ is a legal file name on Unix, GetFileName running under Unix-based platforms cannot correctly return the file name from a Windows-based path like C:\mydir\myfile. c, and you need to get the pathname, d:\apps\src. Equivalent to relative_path(). Extension is part of FileInfo. This looks almost exactly like a previous question. However, it is limited to regular files only. If you need that, you could: cout << argv[0] << endl; If you need the name of a source file of the executable, C++ has a predefined macro you can use: cout << __FILE__ << endl; Go to here and scroll to "Predefined macro names" Feb 15, 2014 · This is a subdirectory containing one entry for each file which the process has open, named by its file descriptor, and which is a symbolic link to the actual file. var fileNameWithExtension = newFileName+ ". PDF" but your code is working on a Unix/Linux machine then p. This macro expands to the name of the current input file, in the form of a C string constant. txt;Now, use the GetFileName () method to get the name of the file −Path. s" (file "test. Is there a simple way to get the filename from a path in c++? 3. Text files are the normal . Mar 19, 2019 · 153. Is there a command to return the owner of a file? 3. The filesystem library was originally developed as boost. Value of this header holds some info about the file being downloaded. GetFileName ()` method, it will return the string `file. ' char in the extracted file name, and then substr() everything before it. In linux struct file represents an opened file and has the path used to open that file associate with the structure. See also. public static string ExtractDatesFromFileNames(string fileName) {. edited Nov 29, 2010 at 16:00. Example 10-21 shows how. h> int main (int argc, char *argv[]) { printf ("file = %s\n", MYFILE); return 0; } Finally, a transcript showing it running: pax:~$ mainprog file = main. For example, in path /Users/abc/Desktop/xyz/ there is a file named "test. "directory entries" a. But if you want to get the path also in the case of the file name is relatively located then you can use the below generic method: string GetPath(string filePath) {. return Path. Exists() and/or Directory. So you might take advantage of the fact FileInfo. png" I want to copy the file name: "image. xml -analyze:ruleset "${RuleSet}" -analyze:quiet ) Jun 15, 2010 · The below program does the work. To test this code, create a main function that opens a file using CreateFile and passes the resulting handle to Jan 31, 2018 · To compile the above code in C++17, change the header file and namespace as mentioned above and use following command, g++ --std=c++17 example. , d:\apps\src\foo. Get File Name. I do not see the reason why it happens, IMO recursion should work here and print for files in subdirectories not only names, but also the rest of information Jun 21, 2021 · I thought to get a file name just returning the file name at the functions in generateFiles. Apr 4, 2019 · A path may contain the drive name, directory name (s) and the filename. So when both forward and backward slashes are used in a path, you need to know the associated platform to be able to interpret it correctly. Apr 27, 2017 · Get a file name from a path. #include <windows. edited Apr 24, 2021 at 16:33. txt" -Leaf. GetFileName(); To get the current line: Oct 23, 2014 · 124312. For example: textBox1. Extension property: Nov 17, 2010 · Maybe I can use exec function to run find command but I want file name as a string to send client program. extension" from the file name. std::string path = "/path/to/directory"; This depends upon the way you have your file names determined. It also calculates the address of the file name portion of the full path and file name. GetFullPath(filePath)) } For example: GetPath("C:\Temp\Filename. You have the full path of a filename, e. You can use function d_path () to retrieve the full path of your file directly. (unlinking an open file is not guaranteed to destroy the file). SafeFileName Gets the file name and extension for the file selected in the dialog box. lib to the TARGETLIBS macro and compile the program with -DPSAPI_VERSION=1. - that's nasty. GetFileNameWithoutExtension(fileName); //Combine the the new file name with its actual extension "last . However, if the name being passed to fopen is important to you, and that variable is out of scope for whatever reason, you could always wrap a FILE* in a struct, ie. I tried to google the term "regular file" but I still not quite understand it thoroughly. Easiest way 2: If you just need some file not existing, use a number (or its hex value) as the file name or a part of it, where you just increase the number till no file with that name exists already. //Remove all extensions "any . For a list of common I/O tasks, see Common I/O Tasks. //. txt and I want to extract hello from it. Text files. Mar 5, 2013 · If I have a file pointer is it possible to get the filename? fp = open("C:\\hello. so i have an array of files stored in a FILE* and need to check if they Mar 19, 2019 · 3. This works for me to remove any . Those things generally refer to file descriptors on unix and file handles(??) on windows. In the response that comes from the server, there is a header called Content-Disposition. Name to do a simple string operation, and just remove the end of the string: In C++17 there is now an official way to list files of your file system: std::filesystem. using std::string; string getFileName(const string& s) {. Get QModelIndex from filepath and filename in QFileSystemModel. The function returns a string object which contains the Name of the given file object. h but I guess that is not good to do because I will have change the return function type. GetDirectoryName( path ) ); The inner call to GetDirectoryName will return the full path, while the outer call to GetFileName() will return the last path component - which will be the folder name. So here we will use the Aug 7, 2020 · 0. {. Instead of using the resources getting the file you can use Split-Path on each line item. So you have to allocate/reserve some memory and pass its address to scanf. Dec 15, 2011 · inline std::string string_base_name(std::string const & path) { return base_name(path); } C) Specify the template parameter when calling with const char *. @KiranSolkar f => Path. extension. May 16, 2002 · Read the original post. The directory-part of the file name is everything up through (and including) the last slash in it. The /b lists only the file names and none of the date/time stamps, sizes, and other junk you're not interested in. For example, if you pass the path `C:\Users\user\Documents\file. ' Aug 16, 2012 · Easiest way: Generate a random number and use its hex value as the file name (unless the file exists, in which case you create a new one). IE, this works well for me, but your mileage may vary! :-) A simplified version of my make "code" : Next, it uses the GetMappedFileName function to obtain the file name. " Solution. For remote files, it prints the device path received from this function. open(fileName. Close the file. Read the file’s contents into our stream object. closed account . This approach works whether or not the path actually exists. For example, $(dir src/foo. If the file name contains no slash, the directory part is the string ‘ . getName Briefly, the file is read linewise using the -ne non-autoprinting linewise flags. ”. Older compilers may not provide all of them. . The file name does not include the path. 6. You can't in fact retrieve the file names from your FILE objects. "adverb") allows multi-part file-extension identification, in this case :parts(^9) means 0. //Number of charecter in the substring is set to 8. k. What can I do to make it more robust? Mar 10, 2010 · To retrieve the file path from a valid file handle returned by CreateFile () on Windows, look at GetFinalPathNameByHandle () [ ^ ]. The scanf statement will try to store the filename entered as input into the memory, starting from the address passed as its 2nd argument. If it was the file name you were interested in, check out GetFileInformationByHandleEx () [ ^ ]. @alexandernst: you can build a directory name from ${TMPDIR:-/tmp} in shell-speak; add some prefix related to your program, and then . (My inference, possibly mistaken, is that Windows' GetFinalPathNameByHandle does a similar lookup, and that's how it deals with deleted or hard linked or renamed files — by simply giving the name under which a file was Dec 6, 2022 · The file name with extension is "program. Obtaining a File Name From a File Handle. In practice it's usually safe to assume it's a In general you can do this automatically by hiding your function behind a macro call which passes allong the __FILE__ and __LINE__ values. Return filename from path. 1. Ajay. txt` to the `Path. ext, so the behavior of the GetFileName Feb 8, 2023 · Remarks. To extract filename from the file, we use “ GetFileName () ” method of “ Path ” class. How to get file suffix in c++? 1. @crashmstr It can in C++11. It would probably be (slightly) clearer to people perusing your code to call them filename and filenames respectively. Then you can get the filename as shown here (using file mapping). How do I get the folder name from my path? This is the file path: @"C:\Users\ME\Desktop\videos" Under the main path there's a folder that I want to get the name: @"C:\Users\ME\Desktop\videos\sample2" @"C:\Users\ME\Desktop\videos\sample3" @"C:\Users\ME\Desktop\videos\sample4" Under the sample folder, there are videos that I want to get the name: Dec 5, 2011 · So on linux, r'a/b\c' always refers to the file b\c in the a folder, while on Windows, it always refers to the c file in the b subfolder of the a folder. Jan 31, 2018 · To compile the above code in C++17, change the header file and namespace as mentioned above and use following command, g++ --std=c++17 example. May 7, 2021 · File Handling in C++. I want to get the file name because I will need to define a vector with the file data so I need to open the file. The returned value is null if the file path is null. In Windows: FindFirstFile, FindNextFile, and FindClose can be used to list files in a specified directory. (none) Return value. basename () function to extract just the file name from the path. This approach, does however, rely on the I program in WPF C#. To get only the file name ( with extension), you may have first to use PathStripPath, followed by PathRemoveExtension. main. filesystem, was published as the technical specification ISO/IEC TS 18822:2015, and finally merged to ISO C++ as of C++17. ext, so the behavior of the GetFileName Nov 2, 2011 · 8. GetFullPathName merges the name of the current drive and directory with a specified file name to determine the full path and file name of a specified file. FileName property returns just the file name part of the full path of a file. 20 it is a new member called f_path. #include <string>. You probably shouldn't be calling these things file and files. Nov 29, 2010 · This task is going to require non-portable code. sometext. But note: if the file name has an extension, this will just add . Apr 9, 2013 · OpenFileDialog. GetFileNameWithoutExtension in the case you already have a FileInfo object. This will give you the name of the file as it was when it was opened — however, if the file was moved or deleted since then, it may no longer be accurate (although Linux can track renames in some cases). Nov 27, 2014 · 2. CreationTime; MessageBox. a. : you'll have to be careful about who allocates and frees the filename string). You can use PathRemoveExtension function to remove extension from filename. Sep 30, 2010 · 299. Exists() on your path first to see if Jun 22, 2020 · C program to get the file name in C - Set the path name in a string −string myPath = D:ewquiz. The GetProcessImageFileName function retrieves the name of the executable file for the specified process handle (WinXP, Server 2k3 or later), as does QueryFullProcessImageName for Vista and 2k8 or later. The GetProcessImageFileName function returns the path in device form, rather than drive letters. the following path: C:\Program Files\hello. On Windows you can convert FILE* to CRT file descriptor using _fileno, and then convert to an OS handle using _get_osfhandle. do. Solution Use the same technique as the previous two recipes by invoking rfind and substr to find and get what you want from the full pathname. c Note the file = line which contains only the base name of the file, not the directory name as well. Extracts the directory-part of each file name in names. s" is inside folder "xyz"). txt") Is it possible to get "hello. answered Jul 16, 2011 at 6:19. To read a character sequence from a text file, we’ll need to perform the following steps: Create a stream object. Here is a complete sample. The steps that we examine in detail below, register under the action of “file handling. empty()? path():*--end() . (N. When dealing with files, there are two types of files you should know about: Text files; Binary files; 1. bat"; std::cout << remove_extension(base_name(filepath)) << std::endl; Nov 21, 2012 · You can obtain the file handle with fileno() and then there are system specific ways to learn about the file name. ext"); Result std::string filepath = "C:\\MyDirectory\\MyFile. Nov 1, 2023 · If you want to know the name under which a file descriptor was opened/allocated, you can store it yourself for later lookup. But I the file name WITHOUT extension (. To verify, stat the filename given and fstat the fd you Jan 26, 2011 · It seems messy to use Path. directory_iterator is used in a range-based for loop, and Yes, Path copes with the platform dependent problem of slash/backslash, but only if the file path is from the same machine (or platform). Is there any way to include the source file name like this: target_compile_options(${target} PRIVATE -analyze:log report_{source_file}. GetDirectoryName() but you need to know that the path you are passing to it does contain a file name; it simply removes the final bit from the path, whether it is a file name or directory name (it actually has no idea which). " << endl; return 0; } Oct 26, 2008 · Then a file in a subdirectory, src/main. txt" using fp? Jul 9, 2009 · I have this method for grabbing the file name from a string URI. txt files. return fileName. Employ the same technique as the previous recipe and use rfind and substr to find and get what you want from the full pathname. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright May 18, 2023 · Solution 1: To get the current file name in Python, we can use the __file__ attribute. Feb 14, 2013 · @AaronFranke Directory. The FileInfo. Run this code. May 18, 2019 · The basename() function returns the last component of a path, which could be a folder name and not a file name. If you had this information in a file you could iterate through all the entires. Nov 2, 2011 · 8. Java get filename without extension: The Filesystem library provides facilities for performing operations on file systems and their components, such as paths, regular files, and directories. This function does not verify that the resulting path and file name are valid, or that they Jun 1, 2010 · 1. dll. You could validate first by testing File. Pseudo code: Find the first file in the directory. Aug 3, 2011 · Because it’s the converse of the principle of not keeping track of information you don’t need: Now it needs the information!) Here’s a simple program which takes a file name on the command line and shows which processes have the file open. A simple modification in the Andreas Bonini answer to remove the occurance of ". StackTrace(true). cpp -lstdc++fs Get File Name using C++ std::string functions And, on a sidenote/addition to my answer below: Sometimes, you want to access a function size_t GetString(char* buf = NULL, size_t bufsize = 0); which will return the necessary buffer size if you call it without any parameters and - if you call it normally - writes up to bufsize characters into buf (or until the end of the string it wants to return, whatever comes first), returning the actual 1. Note that some older compilers might not have support for this method, but this is the native C++ solution to get list of files in the directory. IO; namespace Demo { class Program { static void. I’ve been using the below code to get the filename and it’s works fine for me. Consider this: you upload file from Internet Explorer and it has the path "C:\\Hello\\AnotherFolder\\The File Name. Show("Date and Time File Created: " + dtCreationTime. c Apr 22, 2015 · FPaths::GetBaseFilename. Feb 14, 2016 · printf("file size %zu\n", file_size); This method works fine and get the size correctly. Simple C Program to list down names of all the files in directory in C language with stepwise explanation and Apr 30, 2013 · Try this to get the file name: string currentFile = new System. B. Feb 8, 2023 · Programs that must run on earlier versions of Windows as well as Windows 7 and later versions should always call this function as GetProcessImageFileName. Getting only the filename out of the path with GetOpenFileName. For local files, it converts the path to use a drive letter and prints this path. ToString()); To know the extension of the file, you can access the value of the FileSystemInfo. C++ Find file name before file extension. An example of this header: Content-Disposition : attachment; filename="movie. GetFileName(fullPath). sometext before the . Aug 30, 2018 · How To Get File Name In C#. c++" The file name without extension is "program" Method 2-Using C++17 Filesystem library. I would like to get the filename from a folder by using C language. Byte [] txt = new UTF8Encoding (true). Types of Files. c_str(), ios::app); createFile << "This will give you a new file with a name that user input. Oct 23, 2014 at 15:03. If the abstract path does not contain any name then a null string is returned. #include <iostream>. This method is used to get the file name and extension of the specified path string. The filename identified by the path. IndexOf("_") + 1, 8); } Mar 21, 2014 · 8. GetDirectoryName(Path. Extracting a filename from a path. Example. var newFileName= Path. import os. //since the length of YYYYMMDD is 8. Aug 2, 2009 · 11. In a C program, I have got the inode number of a file, and I need to get file name for this inode number. Jan 30, 2019 · The getName () method is a part of File class. dir /b > c:\<folder of your choice>\files. Here is an example code snippet: python. Then, to remove the extension, you can rfind() the last '. png" to the textBox2 How can i do that? Feb 2, 2024 · Use std::filesystem::directory_iterator to Get a List of Files in a Directory. -Leaf is the switch needed to return just the file name. Oct 2, 2011 · How to get file's owner name in Linux using C++? 6. ip bf lz rw mk yp ei hy vv ov