amxmodx/plugins/include/file.inc

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// vim: set ts=4 sw=4 tw=99 noet:
//
// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
// Copyright (C) The AMX Mod X Development Team.
//
// This software is licensed under the GNU General Public License, version 3 or higher.
// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
// https://alliedmods.net/amxmodx-license
//
// File Functions
//
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#if defined _file_included
#endinput
#endif
#define _file_included
/**
* @note All paths in AMX Mod X natives are relative to the mod folder
* unless otherwise noted.
*
* Most functions in AMX Mod X (at least, ones that deal with direct
* file manipulation) will support an alternate path specification.
*/
/**
* Maximum path length.
*/
#define PLATFORM_MAX_PATH 256
/**
* File inode types for use with open_dir() and next_file().
*/
enum FileType
{
FileType_Unknown, /* Unknown file type (device/socket) */
FileType_Directory, /* File is a directory */
FileType_File, /* File is a file */
};
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/**
* File time modes for use with GetFileTime().
*/
enum FileTimeType
{
FileTime_LastAccess, /* Last access (not available on FAT) */
FileTime_Created, /* Creation (not available on FAT) */
FileTime_LastChange, /* Last modification */
};
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/**
* File position modes for use with fseek().
*/
#define SEEK_SET 0 /* Seek from start */
#define SEEK_CUR 1 /* Seek from current position */
#define SEEK_END 2 /* Seek from end position */
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/**
* Options for use with file_size() flag parameter.
*/
#define FSOPT_BYTES_COUNT 0 /* Returns the file size in number of bytes */
#define FSOPT_LINES_COUNT 1 /* Returns how many lines there are in this file */
#define FSOPT_END_WITH_LF 2 /* Returns whether the last line is '\n' */
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/**
* Data block modes for use with fread*() and fwrite*().
*/
#define BLOCK_INT 4
#define BLOCK_SHORT 2
#define BLOCK_CHAR 1
#define BLOCK_BYTE 1
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/**
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* File permissions flags for use with mkdir() and SetFilePermissions().
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*/
#define FPERM_U_READ 0x0100 /* User can read. */
#define FPERM_U_WRITE 0x0080 /* User can write. */
#define FPERM_U_EXEC 0x0040 /* User can exec. */
#define FPERM_U_RWX FPERM_U_READ | FPERM_U_WRITE | FPERM_U_EXEC
#define FPERM_G_READ 0x0020 /* Group can read. */
#define FPERM_G_WRITE 0x0010 /* Group can write. */
#define FPERM_G_EXEC 0x0008 /* Group can exec. */
#define FPERM_G_RWX FPERM_G_READ | FPERM_G_WRITE | FPERM_G_EXEC
#define FPERM_O_READ 0x0004 /* Anyone can read. */
#define FPERM_O_WRITE 0x0002 /* Anyone can write. */
#define FPERM_O_EXEC 0x0001 /* Anyone can exec. */
#define FPERM_O_RWX FPERM_O_READ | FPERM_O_WRITE | FPERM_O_EXEC
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#define FPERM_DIR_DEFAULT FPERM_U_RWX | FPERM_G_RWX | FPERM_O_RWX /* rwx r-x r-x (0755) */
/**
* Reads content from directory
*
* @note This native is expensive. Consider the use of open_dir(), next_file() and close_dir() instead.
* @note Both the '.' and '..' automatic directory entries will be retrieved for Windows and Linux.
*
* @param dirname Path to open
* @param pos Index the element
* @param output String buffer to hold content
* @param len Maximum size of string buffer
* @param outlen Number of characters written to the buffer
*
* @return Returns index of next element, otherwiwe 0 when end of dir is reached
*/
native read_dir(const dirname[], pos, output[], len, &outlen = 0);
/**
* Reads line from file.
*
* @note This native is expensive. Consider the use of new file natives (fopen(), fgets(), etc.)
* if purpose is to read several lines of a file.
*
* @param file Path to open
* @param line Index of the line, starting to 0
* @param text String buffer to hold line read
* @param len Maximum size of string buffer
* @param txtlen Number of characters written to the buffer
*
* @return Returns index of next line, otherwise 0 when end of file is reached
* @error Unable to read the file
*/
native read_file(const file[], line, text[], len, &txtlen = 0);
/**
* Writes text to file.
*
* @note This native is expensive. Consider the use of new file natives (fopen(), fputs(), etc.)
* if purpose is to write several lines of a file.
*
* @param file Path to open
* @param text String to write to
* @param line Index of the line, starting to 0
* If < 0, content will be appended
*
* @noreturn
* @error Unable to write [temporary] file
*/
native write_file(const file[], const text[], line = -1);
/**
* Deletes a file.
*
* @param file Path of the file to delete
* @param use_valve_fs If true, the Valve file system will be used instead.
* This can be used to delete files existing in the Valve
* search path, rather than solely files existing directly
* in the gamedir.
* @param valve_path_id If use_valve_fs, a search path from gameinfo or NULL_STRING for all search paths.
*
* @return 1 on success, 0 on failure or if file not immediately removed.
*/
native delete_file(const file[], bool:use_valve_fs = false, const valve_path_id[] = "GAMECONFIG");
/**
* Checks if a file exists.
*
* @param file Path to the file
* @param use_valve_fs If true, the Valve file system will be used instead.
* This can be used to find files existing in any of
* the Valve search paths, rather than solely files
* existing directly in the gamedir.
*
* @return 1 if the file exists, 0 otherwise
*/
native file_exists(const file[], bool:use_valve_fs = false);
/**
* Renames a file.
*
* @param oldname New path to the file
* @param newname Path to the existing file
* @param relative If true, native will act like other natives which
* use the moddir as a base directory. Otherwise, the
* current directory is undefined (but assumed to be hlds).
*
* @return 1 on success, 0 otherwise
*/
native rename_file(const oldname[], const newname[], relative = 0);
/**
* Checks if a directory exists.
*
* @param dir Path to the directory
* @param use_valve_fs If true, the Valve file system will be used instead.
* This can be used to find files existing in any of
* the Valve search paths, rather than solely files
* existing directly in the gamedir.
*
* @return 1 if the directory exists, 0 otherwise
*/
native dir_exists(const dir[], bool:use_valve_fs = false);
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/**
* Get the file size in bytes.
*
* @param file Path to the file
* @param flag Flag options, see FSOPT_* constants
* @param use_valve_fs If true, the Valve file system will be used instead.
* This can be used to find files existing in any of
* the Valve search paths, rather than solely files
* existing directly in the gamedir.
* If used, flag option is ignored.
* @param valve_path_id If use_valve_fs, a search path from gameinfo or NULL_STRING for all search paths
*
* @return If flag is FSOPT_BYTES_COUNT or use_valve_fs to true, the file size in bytes
* If flag is FSOPT_LINES_COUNT, the number of lines in the file
* If flag is FSOPT_END_WITH_LF, 1 is returned if file ends with line feed
* If file doesn't exist, -1
*/
native file_size(const file[], flag = FSOPT_BYTES_COUNT, bool:use_valve_fs = false, const valve_path_id[] = "GAME");
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/**
* Opens or creates a file, returning a file handle on success. File handles
* should be closed with fclose().
*
* @note The open mode may be one of the following strings:
* "r": Open an existing file for reading.
* "w": Create a file for writing, or truncate (delete the contents of) an
* existing file and then open it for writing.
* "a": Create a file for writing, or open an existing file such that writes
* will be appended to the end.
* "r+": Open an existing file for both reading and writing.
* "w+": Create a file for reading and writing, or truncate an existing file
* and then open it for reading and writing.
* "a+": Create a file for both reading and writing, or open an existing file
* such that writes will be appended to the end.
*
* @note The open mode may also contain an additional character after "r", "w", or "a",
* but before any "+" sign. This character may be "b" (indicating binary mode) or
* "t" (indicating text mode). By default, "text" mode is implied. On Linux and
* Mac, this has no distinction from binary mode. On Windows, it causes the '\n'
* character (0xA) to be written as "\r\n" (0xD, 0xA).
*
* Example: "rb" opens a binary file for writing; "at" opens a text file for
* appending.
*
* @note Registered paths ID are (in priority order) :
* GAME All paths related to current mod, including fallback
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* Depending settings, it includes: <gamedir>_lv/_addon/_<language>/_hd
* and <gamedir> itself
* GAMECONFIG The default writable directory (<gamedir>)
* GAMEDOWNLOAD The download directory (<gamedir>_download)
* GAME_FALLBACK All paths related to fallback game, same as GAME
* DEFAULTGAME All paths related to the default game which is "valve", same as GAME
* BASE The base path where server is installed
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*
* Note that some paths are non-writable. It includes all <gamedir>_* (expect _download)
* and DEFAULTGAME. Any file inside a non-writable path will be ignored if you try to open
* it in writing mode.
*
* @param filename File to open
* @param mode Open mode
* @param use_valve_fs If true, the Valve file system will be used instead
* This can be used to finred files existing in valve
* search paths, rather than solely files existing directly
* in the gamedir.
* @param valve_path_id If use_valve_fs, a search path from gameinfo or NULL_STRING for all search paths
*
* @return A file handle, or null if the file could not be opened.
*/
native fopen(const filename[], const mode[], bool:use_valve_fs = false, const valve_path_id[] = "GAME");
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/**
* Closes a file handle.
*
* @param file File handle
*/
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native fclose(file);
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/**
* Reads a single binary data from a file.
*
* @param file Handle to the file
* @param data Variable to store item read
* @param mode Size of each element, in bytes, to be read
* See BLOCK_* constants
*
* @return Number of elements read
*/
native fread(file, &any:data, mode);
/**
* Reads binary data from a file.
*
* @param file Handle to the file
* @param data Array to store each item read
* @param blocks Number of items to read into the array
* @param mode Size of each element, in bytes, to be read
* Valid sizes are 1, 2, or 4. See BLOCK_* constants.
*
* @return Number of elements read
*/
native fread_blocks(file, any:data[], blocks, mode);
/**
* Reads raw binary data from a file.
*
* @param file Handle to the file
* @param stream Array to store each item read
* @param blocksize Number of items to read into the array
* @param blocks Size of each element, in bytes. The data is read directly.
* That is, in 1 or 2-byte mode, the lower byte(s) in
* each cell are used directly, rather than performing
* any casts from a 4-byte number to a smaller number.
*
* @return Number of elements read
*/
native fread_raw(file, any:stream[], blocksize, blocks);
/**
* Writes a single binary data to a file.
*
* @param file Handle to the file
* @param data Item to write
* @param mode Size of each item in the array in bytes
* Valid sizes are 1, 2, or 4. See BLOCK_* constants
*
* @return Number of elements written
*/
native fwrite(file, any:data, mode);
/**
* Writes binary data to a file.
*
* @param file Handle to the file
* @param data Array of items to write
* @param blocks Number of items in the array
* @param mode Size of each item in the array in bytes
* Valid sizes are 1, 2, or 4. See BLOCK_* constants
*
* @return Number of elements written
*/
native fwrite_blocks(file, const any:data[], blocks, mode);
/**
* Writes raw binary data to a file.
*
* @param file Handle to the file.
* @param stream Array of items to write. The data is written directly.
* That is, in 1 or 2-byte mode, the lower byte(s) in
* each cell are used directly, rather than performing
* any casts from a 4-byte number to a smaller number.
* @param blocks Size of each item in the array in bytes.
* @param mode Number of items in the array.
*
* @return Number of elements written
*/
native fwrite_raw(file, const any:stream[], blocks, mode);
/**
* Tests if the end of file has been reached.
*
* @param file Handle to the file
*
* @return 1 if end of file has been reached, 0 otherwise.
*/
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native feof(file);
/**
* Reads a line from a text file.
*
* @param file Handle to the file.
* @param buffer String buffer to hold the line
* @param maxlength Maximum size of string buffer
*
* @return Total number of characters written on success, 0 otherwise
*/
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native fgets(file, buffer[], maxlength);
/**
* Writes a line of text to a text file.
*
* @param file Handle to the file
* @param text String to write
* @param null_term True to append NULL terminator, false otherwise
*
* @return 0 on success, -1 otherwise
*/
native fputs(file, const text[], bool:null_term = false);
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/**
* Writes a line of formatted text to a text file.
*
* @param file Handle to the file
* @param format Formatting rules
* @param ... Variable number of format parameters
*
* @return Total number of characters written on success, 0 otherwise
*/
native fprintf(file, const fmt[], any:...);
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/**
* Sets the file position indicator.
*
* @param file Handle to the file
* @param position Position relative to what is specified in whence
* @param start SEEK_ constant value of where to see from
*
* @return 0 on success, a non-zero value otherwise
*/
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native fseek(file, position, start);
/**
* Gets current position in the file.
*
* @param file Handle to the file
*
* @return Value for the file position indicator
*/
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native ftell(file);
/**
* Gets character from file.
*
* @param file Handle to the file
*
* @return Character read on success, -1 otherwise
*/
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native fgetc(file);
/**
* Writes character to file
*
* @param file Handle to the file
* @param data Character to put
*
* @return Character written on success, -1 otherwise
*/
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native fputc(file, data);
/**
* Ungets character from file.
*
* @param file Handle to the file
* @param data Character to unget
*
* @return On success, the character put back is returned, -1 otherwise
*/
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native fungetc(file, data);
/**
* Flushes a buffered output stream.
*
* @param file File handle, or 0 for all open streams
*
* @return 0 on success, -1 on failure
*/
native fflush(file);
/**
* Gets the formatted file size in bytes.
*
* @param filename Path to the file
* @param ... Variable number of format parameters
*
* @return File size in bytes, otherwise -1 if file not found
*/
native filesize(const filename[], any:...);
/**
* Removes a directory.
*
* @note On most Operating Systems you cannot remove a directory which has files inside it.
*
* @param path Path to the directory
*
* @return 1 on success, 0 otherwise
*/
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native rmdir(const path[]);
/**
* Creates a directory.
*
* @param path Path to create
* @param mode Permissions (default is o=rx,g=rx,u=rwx). Note that folders must have
* the execute bit set on Linux. On Windows, the mode is ignored.
* @param use_valve_fs If true, the Valve file system will be used instead
* This can be used to create folders in the game's
* Valve search paths, rather than directly in the gamedir.
* @param valve_path_id If use_valve_fs, a search path from gameinfo or NULL_STRING for default
* In this case, mode is ignored
*
* @return 0 on success, -1 otherwise
*/
native mkdir(const dirname[], mode = FPERM_DIR_DEFAULT, bool:use_valve_fs = false, const valve_path_id[] = "GAMECONFIG");
/**
* Deletes a file (delete_file macro)
*
* @param filename Path of the file to delete
* @param use_valve_fs If true, the Valve file system will be used instead.
* This can be used to delete files existing in the Valve
* search path, rather than solely files existing directly
* in the gamedir.
* @param valve_path_id If use_valve_fs, a search path from gameinfo or NULL_STRING for all search paths
*
* @return 1 on success, 0 on failure or if file not immediately removed
*/
native unlink(const filename[], bool:use_valve_fs = false, const valve_path_id[] = "GAMECONFIG");
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/**
* Opens a directory/folder for contents enumeration.
*
* @note Directories are closed with close_dir().
*
* @param dir Path to open.
* @param firstfile String buffer to hold first file name
* @param length Maximum size of the string buffer
* @param type Optional variable to store the file type
* @param use_valve_fs If true, the Valve file system will be used instead.
* This can be used to find files existing in any of
* the Valve search paths, rather than solely files
* existing directly in the gamedir.
* @param valve_path_id If use_valve_fs, a search path from gameinfo or NULL_STRING for all search paths.
*
* @return Handle to the directory, 0 otherwise
*/
native open_dir(dir[], firstfile[], length, &FileType:type = FileType_Unknown, bool:use_valve_fs = false, const valve_path_id[] = "GAME");
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/**
* Reads the next directory entry as a local filename.
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*
* @note Contents of buffers are undefined when returning false.
* @note Both the '.' and '..' automatic directory entries will be retrieved for Windows and Linux.
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*
* @param dirh Handle to a directory
* @param buffer String buffer to hold directory name
* @param length Maximum size of string buffer
* @param type Optional variable to store the file type. FileType_* constants
*
* @return 1 on success, 0 if there are no more files to read.
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*/
native next_file(dirh, buffer[], length, &FileType:type = FileType_Unknown);
/**
* Closes the directory.
*
* @param dirh Handle to a directory
*/
native close_dir(dirh);
/**
* Loads a file using the LoadFileForMe engine function.
*
* The data is truncated if there is not enough space. No null-terminator
* is applied; the data is the raw contents of the file.
*
* @param file File to load (may be a file from the GCF)
* @param buffer Buffer to store file contents
* @param maxlength Maximum size of the file buffer
* @param length Variable to store the file length. This may return
* a number larger than the buffer size
* @return -1 if the file could not be loaded. Otherwise,
* the number of cells actually written to the buffer
* are returned.
*/
native LoadFileForMe(const file[], buffer[], maxlength, &length = 0);
/**
* Returns a file timestamp as a unix timestamp.
*
* @param file File name
* @param tmode Time mode, see FileTime_* constants
*
* @return Returns a file timestamp as a unix timestamp
*/
native GetFileTime(const file[], FileTimeType:tmode);
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/**
* Changes a file or directories permissions.
*
* @param path Path to the file
* @param mode Permissions to set, see FPERM_* constants
*
* @return True on success, false otherwise
*/
native bool:SetFilePermissions(const path[], mode);
/**
* Reads a single int8 (byte) from a file. The returned value is sign-
* extended to an int32.
*
* @param file Handle to the file
* @param data Variable to store the data read
*
* @return True on success, false on failure
*/
native bool:FileReadInt8(file, &any:data);
/**
* Reads a single uint8 (unsigned byte) from a file. The returned value is
* zero-extended to an int32.
*
* @param file Handle to the file
* @param data Variable to store the data read
*
* @return True on success, false on failure
*/
native bool:FileReadUint8(file, &any:data);
/**
* Reads a single int16 (short) from a file. The value is sign-extended to
* an int32.
*
* @param file Handle to the file
* @param data Variable to store the data read
*
* @return True on success, false on failure
*/
native bool:FileReadInt16(file, &any:data);
/**
* Reads a single unt16 (unsigned short) from a file. The value is zero-
* extended to an int32.
*
* @param file Handle to the file
* @param data Variable to store the data read
*
* @return True on success, false on failure
*/
native bool:FileReadUint16(file, &any:data);
/**
* Reads a single int32 (int/cell) from a file.
*
* @param file Handle to the file
* @param data Variable to store the data read
*
* @return True on success, false on failure
*/
native bool:FileReadInt32(file, &any:data);
/**
* Writes a single int8 (byte) to a file.
*
* @param file Handle to the file
* @param data Data to write (truncated to an int8)
*
* @return True on success, false on failure
*/
native bool:FileWriteInt8(file, any:data);
/**
* Writes a single int16 (short) to a file.
*
* @param file Handle to the file
* @param data Data to write (truncated to an int16)
*
* @return True on success, false on failure
*/
native bool:FileWriteInt16(file, any:data);
/**
* Writes a single int32 (int/cell) to a file.
*
* @param file Handle to the file
* @param data Data to write
*
* @return True on success, false on failure
*/
native bool:FileWriteInt32(file, any:data);