90 lines
4.1 KiB
C
90 lines
4.1 KiB
C
/* Grafx2 - The Ultimate 256-color bitmap paint program
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Copyright 2008 Yves Rizoud
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Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
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Grafx2 is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2
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of the License.
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Grafx2 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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*/
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//////////////////////////////////////////////////////////////////////////////
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///@file io.h
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/// Low-level endian-neutral file operations, and also some filesystem operations.
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/// Many of these may seem trivial, but the wrappers eliminate the need for a
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/// forest of preprocessor defines in each file.
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/// You MUST use the functions in this file instead of:
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/// - fread() and fwrite()
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/// - stat()
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/// - fstat()
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/// - opendir()
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/// - readdir()
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/// - Also, don't assume "/" or "\\", use PATH_SEPARATOR
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/// If you don't, you break another platform.
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//////////////////////////////////////////////////////////////////////////////
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/// Reads a single byte from an open file. Returns true if OK, false if a file i/o error occurred.
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int Read_byte(FILE *file, byte *dest);
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/// Writes a single byte to an open file. Returns true if OK, false if a file i/o error occurred.
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int Write_byte(FILE *file, byte b);
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/// Reads several bytes from an open file. Returns true if OK, false if a file i/o error occurred.
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int Read_bytes(FILE *file, void *dest, size_t size);
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/// Writes several bytes to an open file. Returns true if OK, false if a file i/o error occurred.
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int Write_bytes(FILE *file, void *dest, size_t size);
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/// Reads a 16-bit Low-Endian word from an open file. Returns true if OK, false if a file i/o error occurred.
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int Read_word_le(FILE *file, word *dest);
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/// Writes a 16-bit Low-Endian word to an open file. Returns true if OK, false if a file i/o error occurred.
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int Write_word_le(FILE *file, word w);
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/// Reads a 32-bit Low-Endian dword from an open file. Returns true if OK, false if a file i/o error occurred.
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int Read_dword_le(FILE *file, dword *dest);
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/// Writes a 32-bit Low-Endian dword to an open file. Returns true if OK, false if a file i/o error occurred.
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int Write_dword_le(FILE *file, dword dw);
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/// Reads a 16-bit Big-Endian word from an open file. Returns true if OK, false if a file i/o error occurred.
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int Read_word_be(FILE *file, word *dest);
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/// Writes a 16-bit Big-Endian word to an open file. Returns true if OK, false if a file i/o error occurred.
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int Write_word_be(FILE *file, word w);
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/// Reads a 32-bit Big-Endian dword from an open file. Returns true if OK, false if a file i/o error occurred.
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int Read_dword_be(FILE *file, dword *dest);
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/// Writes a 32-bit Big-Endian dword to an open file. Returns true if OK, false if a file i/o error occurred.
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int Write_dword_be(FILE *file, dword dw);
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/// Extracts the filename part from a full file name.
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void Extract_filename(char *dest, const char *source);
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/// Extracts the directory from a full file name.
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void Extract_path(char *dest, const char *source);
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/// Finds the rightmost path separator in a full filename. Used to separate directory from file.
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char * Find_last_slash(const char * str);
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#if defined(__WIN32__)
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#define PATH_SEPARATOR "\\"
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#else
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#define PATH_SEPARATOR "/"
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#endif
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/// Size of a file, in bytes. Returns 0 in case of error.
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int File_length(const char *fname);
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/// Size of a file, in bytes. Takes an open file as argument, returns 0 in case of error.
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int File_length_file(FILE * file);
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/// Returns true if a file passed as a parameter exists in the current directory.
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int File_exists(char * fname);
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/// Returns true if a directory passed as a parameter exists in the current directory.
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int Directory_exists(char * directory);
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/// Scans a directory, calls Callback for each file in it,
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void For_each_file(const char * directory_name, void Callback(const char *));
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