mirror of
https://github.com/DrBeef/Raze.git
synced 2024-12-15 07:01:21 +00:00
1034 lines
21 KiB
C++
1034 lines
21 KiB
C++
/*
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** cmdlib.cpp
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** Misc utilities (mostly file handling stuff)
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**
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**---------------------------------------------------------------------------
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** Copyright 1999-2016 Randy Heit
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** Copyright 2019 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "cmdlib.h"
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#include "i_system.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <time.h>
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/*
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progdir will hold the path up to the game directory, including the slash
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f:\quake\
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/raid/quake/
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gamedir will hold progdir + the game directory (id1, id2, etc)
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*/
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FString progdir;
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//==========================================================================
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//
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// IsSeperator
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//
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// Returns true if the character is a path seperator.
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//
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//==========================================================================
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static inline bool IsSeperator (int c)
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{
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if (c == '/')
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return true;
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#ifdef _WIN32
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if (c == '\\' || c == ':')
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return true;
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#endif
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return false;
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}
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//==========================================================================
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//
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// FixPathSeperator
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//
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// Convert backslashes to forward slashes.
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//
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//==========================================================================
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void FixPathSeperator (char *path)
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{
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while (*path)
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{
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if (*path == '\\')
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*path = '/';
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path++;
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}
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}
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//==========================================================================
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//
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// copystring
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//
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// Replacement for strdup that uses new instead of malloc.
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//
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//==========================================================================
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char *copystring (const char *s)
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{
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char *b;
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if (s)
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{
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size_t len = strlen (s) + 1;
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b = new char[len];
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memcpy (b, s, len);
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}
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else
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{
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b = new char[1];
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b[0] = '\0';
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}
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return b;
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}
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//==========================================================================
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//
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// ReplaceString
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//
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// Do not use in new code.
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//
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//==========================================================================
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void ReplaceString (char **ptr, const char *str)
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{
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if (*ptr)
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{
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if (*ptr == str)
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return;
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delete[] *ptr;
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}
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*ptr = copystring (str);
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}
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/*
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=============================================================================
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MISC FUNCTIONS
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=============================================================================
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*/
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//==========================================================================
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//
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// FileExists
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//
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// Returns true if the given path exists and is a readable file.
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//
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//==========================================================================
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bool FileExists (const char *filename)
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{
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bool isdir;
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bool res = DirEntryExists(filename, &isdir);
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return res && !isdir;
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}
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//==========================================================================
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//
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// DirExists
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//
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// Returns true if the given path exists and is a directory.
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//
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//==========================================================================
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bool DirExists(const char *filename)
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{
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bool isdir;
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bool res = DirEntryExists(filename, &isdir);
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return res && isdir;
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}
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//==========================================================================
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//
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// DirEntryExists
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//
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// Returns true if the given path exists, be it a directory or a file.
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//
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//==========================================================================
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bool DirEntryExists(const char *pathname, bool *isdir)
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{
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if (isdir) *isdir = false;
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if (pathname == NULL || *pathname == 0)
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return false;
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#ifndef _WIN32
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struct stat info;
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bool res = stat(pathname, &info) == 0;
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#else
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// Windows must use the wide version of stat to preserve non-standard paths.
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auto wstr = WideString(pathname);
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struct _stat64 info;
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bool res = _wstat64(wstr.c_str(), &info) == 0;
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#endif
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if (isdir) *isdir = !!(info.st_mode & S_IFDIR);
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return res;
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}
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//==========================================================================
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//
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// DirEntryExists
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//
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// Returns true if the given path exists, be it a directory or a file.
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//
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//==========================================================================
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bool GetFileInfo(const char* pathname, size_t *size, time_t *time)
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{
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if (pathname == NULL || *pathname == 0)
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return false;
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#ifndef _WIN32
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struct stat info;
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bool res = stat(pathname, &info) == 0;
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#else
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// Windows must use the wide version of stat to preserve non-standard paths.
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auto wstr = WideString(pathname);
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struct _stat64 info;
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bool res = _wstat64(wstr.c_str(), &info) == 0;
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#endif
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if (!res || (info.st_mode & S_IFDIR)) return false;
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if (size) *size = info.st_size;
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if (time) *time = info.st_mtime;
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return res;
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}
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//==========================================================================
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//
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// DefaultExtension -- FString version
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//
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// Appends the extension to a pathname if it does not already have one.
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//
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//==========================================================================
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void DefaultExtension (FString &path, const char *extension)
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{
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const char *src = &path[int(path.Len())-1];
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while (src != &path[0] && !IsSeperator(*src))
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{
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if (*src == '.')
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return; // it has an extension
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src--;
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}
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path += extension;
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}
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//==========================================================================
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//
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// ExtractFilePath
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//
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// Returns the directory part of a pathname.
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//
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// FIXME: should include the slash, otherwise
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// backing to an empty path will be wrong when appending a slash
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//
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//==========================================================================
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FString ExtractFilePath (const char *path)
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{
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const char *src;
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src = path + strlen(path) - 1;
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//
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// back up until a \ or the start
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//
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while (src != path && !IsSeperator(*(src-1)))
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src--;
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return FString(path, src - path);
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}
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//==========================================================================
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//
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// ExtractFileBase
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//
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// Returns the file part of a pathname, optionally including the extension.
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//
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//==========================================================================
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FString ExtractFileBase (const char *path, bool include_extension)
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{
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const char *src, *dot;
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src = path + strlen(path) - 1;
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if (src >= path)
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{
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// back up until a / or the start
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while (src != path && !IsSeperator(*(src-1)))
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src--;
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// Check for files with drive specification but no path
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#if defined(_WIN32)
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if (src == path && src[0] != 0)
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{
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if (src[1] == ':')
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src += 2;
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}
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#endif
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if (!include_extension)
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{
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dot = src;
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while (*dot && *dot != '.')
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{
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dot++;
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}
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return FString(src, dot - src);
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}
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else
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{
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return FString(src);
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}
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}
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return FString();
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}
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//==========================================================================
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//
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// StripExtension
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//
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// Returns the path with the extension removed
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//
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//==========================================================================
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FString StripExtension(const char* path)
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{
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const char* src;
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if (*path == 0) return "";
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src = path + strlen(path) - 1;
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//
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// back up until a . and abort on a \
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//
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while (src != path && !IsSeperator(*(src - 1)))
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{
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if (*src == '.') return FString(path, src - path);
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src--;
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}
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return path;
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}
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//==========================================================================
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//
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// IsNum
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//
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// [RH] Returns true if the specified string is a valid decimal number
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//
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//==========================================================================
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bool IsNum (const char *str)
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{
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while (*str)
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{
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if (((*str < '0') || (*str > '9')) && (*str != '-'))
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{
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return false;
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}
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str++;
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}
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return true;
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}
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//==========================================================================
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//
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// CheckWildcards
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//
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// [RH] Checks if text matches the wildcard pattern using ? or *
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//
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//==========================================================================
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bool CheckWildcards (const char *pattern, const char *text)
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{
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if (pattern == NULL || text == NULL)
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return true;
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while (*pattern)
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{
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if (*pattern == '*')
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{
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char stop = tolower (*++pattern);
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while (*text && tolower(*text) != stop)
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{
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text++;
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}
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if (*text && tolower(*text) == stop)
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{
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if (CheckWildcards (pattern, text++))
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{
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return true;
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}
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pattern--;
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}
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}
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else if (*pattern == '?' || tolower(*pattern) == tolower(*text))
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{
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pattern++;
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text++;
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}
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else
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{
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return false;
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}
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}
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return (*pattern | *text) == 0;
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}
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//==========================================================================
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//
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// FormatGUID
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//
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// [RH] Print a GUID to a text buffer using the standard format.
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//
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//==========================================================================
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void FormatGUID (char *buffer, size_t buffsize, const GUID &guid)
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{
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snprintf (buffer, buffsize, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
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(uint32_t)guid.Data1, guid.Data2, guid.Data3,
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guid.Data4[0], guid.Data4[1],
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guid.Data4[2], guid.Data4[3],
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guid.Data4[4], guid.Data4[5],
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guid.Data4[6], guid.Data4[7]);
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}
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//==========================================================================
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//
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// myasctime
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//
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// [RH] Returns the current local time as ASCII, even if it's too early
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//
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//==========================================================================
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const char *myasctime ()
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{
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static char readabletime[50];
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time_t clock;
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struct tm *lt;
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time (&clock);
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lt = localtime (&clock);
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if (lt != NULL)
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{
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strftime(readabletime, 50, "%F %T", lt);
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return readabletime;
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}
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else
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{
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return "Unknown\n";
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}
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}
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//==========================================================================
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//
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// CreatePath
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//
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// Creates a directory including all levels necessary
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//
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//==========================================================================
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#ifdef _WIN32
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void DoCreatePath(const char *fn)
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{
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char drive[_MAX_DRIVE];
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char dir[_MAX_DIR];
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_splitpath_s(fn, drive, sizeof drive, dir, sizeof dir, nullptr, 0, nullptr, 0);
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if ('\0' == *dir)
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{
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// Root/current/parent directory always exists
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return;
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}
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char path[_MAX_PATH];
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_makepath_s(path, sizeof path, drive, dir, nullptr, nullptr);
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if ('\0' == *path)
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{
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// No need to process empty relative path
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return;
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}
|
|
|
|
// Remove trailing path separator(s)
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for (size_t i = strlen(path); 0 != i; --i)
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{
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char& lastchar = path[i - 1];
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|
|
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if ('/' == lastchar || '\\' == lastchar)
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{
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lastchar = '\0';
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}
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else
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{
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break;
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}
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}
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|
|
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// Create all directories for given path
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if ('\0' != *path)
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{
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DoCreatePath(path);
|
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#ifdef _WIN32
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auto wpath = WideString(path);
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_wmkdir(wpath.c_str());
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#else
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_mkdir(path);
|
|
#endif
|
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}
|
|
}
|
|
|
|
void CreatePath(const char *fn)
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{
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char c = fn[strlen(fn)-1];
|
|
|
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if (c != '\\' && c != '/')
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{
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FString name(fn);
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name += '/';
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DoCreatePath(name);
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|
}
|
|
else
|
|
{
|
|
DoCreatePath(fn);
|
|
}
|
|
}
|
|
#else
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|
void CreatePath(const char *fn)
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{
|
|
char *copy, *p;
|
|
|
|
if (fn[0] == '/' && fn[1] == '\0')
|
|
{
|
|
return;
|
|
}
|
|
p = copy = strdup(fn);
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do
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|
{
|
|
p = strchr(p + 1, '/');
|
|
if (p != NULL)
|
|
{
|
|
*p = '\0';
|
|
}
|
|
if (!DirEntryExists(copy) && mkdir(copy, 0755) == -1)
|
|
{
|
|
// failed
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|
free(copy);
|
|
return;
|
|
}
|
|
if (p != NULL)
|
|
{
|
|
*p = '/';
|
|
}
|
|
} while (p);
|
|
free(copy);
|
|
}
|
|
#endif
|
|
|
|
//==========================================================================
|
|
//
|
|
// strbin -- In-place version
|
|
//
|
|
// [RH] Replaces the escape sequences in a string with actual escaped characters.
|
|
// This operation is done in-place. The result is the new length of the string.
|
|
//
|
|
//==========================================================================
|
|
|
|
int strbin (char *str)
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|
{
|
|
char *start = str;
|
|
char *p = str, c;
|
|
int i;
|
|
|
|
while ( (c = *p++) ) {
|
|
if (c != '\\') {
|
|
*str++ = c;
|
|
} else {
|
|
switch (*p) {
|
|
case 'a':
|
|
*str++ = '\a';
|
|
break;
|
|
case 'b':
|
|
*str++ = '\b';
|
|
break;
|
|
case 'c':
|
|
*str++ = '\034'; // TEXTCOLOR_ESCAPE
|
|
break;
|
|
case 'f':
|
|
*str++ = '\f';
|
|
break;
|
|
case 'n':
|
|
*str++ = '\n';
|
|
break;
|
|
case 't':
|
|
*str++ = '\t';
|
|
break;
|
|
case 'r':
|
|
*str++ = '\r';
|
|
break;
|
|
case 'v':
|
|
*str++ = '\v';
|
|
break;
|
|
case '?':
|
|
*str++ = '\?';
|
|
break;
|
|
case '\n':
|
|
break;
|
|
case 'x':
|
|
case 'X':
|
|
c = 0;
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
p++;
|
|
if (*p >= '0' && *p <= '9')
|
|
c = (c << 4) + *p-'0';
|
|
else if (*p >= 'a' && *p <= 'f')
|
|
c = (c << 4) + 10 + *p-'a';
|
|
else if (*p >= 'A' && *p <= 'F')
|
|
c = (c << 4) + 10 + *p-'A';
|
|
else
|
|
{
|
|
p--;
|
|
break;
|
|
}
|
|
}
|
|
*str++ = c;
|
|
break;
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
c = *p - '0';
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
p++;
|
|
if (*p >= '0' && *p <= '7')
|
|
c = (c << 3) + *p - '0';
|
|
else
|
|
{
|
|
p--;
|
|
break;
|
|
}
|
|
}
|
|
*str++ = c;
|
|
break;
|
|
default:
|
|
*str++ = *p;
|
|
break;
|
|
}
|
|
p++;
|
|
}
|
|
}
|
|
*str = 0;
|
|
return int(str - start);
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// strbin1 -- String-creating version
|
|
//
|
|
// [RH] Replaces the escape sequences in a string with actual escaped characters.
|
|
// The result is a new string.
|
|
//
|
|
//==========================================================================
|
|
|
|
FString strbin1 (const char *start)
|
|
{
|
|
FString result;
|
|
const char *p = start;
|
|
char c;
|
|
int i;
|
|
|
|
while ( (c = *p++) ) {
|
|
if (c != '\\') {
|
|
result << c;
|
|
} else {
|
|
switch (*p) {
|
|
case 'a':
|
|
result << '\a';
|
|
break;
|
|
case 'b':
|
|
result << '\b';
|
|
break;
|
|
case 'c':
|
|
result << '\034'; // TEXTCOLOR_ESCAPE
|
|
break;
|
|
case 'f':
|
|
result << '\f';
|
|
break;
|
|
case 'n':
|
|
result << '\n';
|
|
break;
|
|
case 't':
|
|
result << '\t';
|
|
break;
|
|
case 'r':
|
|
result << '\r';
|
|
break;
|
|
case 'v':
|
|
result << '\v';
|
|
break;
|
|
case '?':
|
|
result << '\?';
|
|
break;
|
|
case '\n':
|
|
break;
|
|
case 'x':
|
|
case 'X':
|
|
c = 0;
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
p++;
|
|
if (*p >= '0' && *p <= '9')
|
|
c = (c << 4) + *p-'0';
|
|
else if (*p >= 'a' && *p <= 'f')
|
|
c = (c << 4) + 10 + *p-'a';
|
|
else if (*p >= 'A' && *p <= 'F')
|
|
c = (c << 4) + 10 + *p-'A';
|
|
else
|
|
{
|
|
p--;
|
|
break;
|
|
}
|
|
}
|
|
result << c;
|
|
break;
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
c = *p - '0';
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
p++;
|
|
if (*p >= '0' && *p <= '7')
|
|
c = (c << 3) + *p - '0';
|
|
else
|
|
{
|
|
p--;
|
|
break;
|
|
}
|
|
}
|
|
result << c;
|
|
break;
|
|
default:
|
|
result << *p;
|
|
break;
|
|
}
|
|
p++;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// ExpandEnvVars
|
|
//
|
|
// Expands environment variable references in a string. Intended primarily
|
|
// for use with IWAD search paths in config files.
|
|
//
|
|
//==========================================================================
|
|
|
|
FString ExpandEnvVars(const char *searchpathstring)
|
|
{
|
|
static const char envvarnamechars[] =
|
|
"01234567890"
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
"_"
|
|
"abcdefghijklmnopqrstuvwxyz";
|
|
|
|
if (searchpathstring == NULL)
|
|
return FString("");
|
|
|
|
const char *dollar = strchr(searchpathstring, '$');
|
|
if (dollar == NULL)
|
|
{
|
|
return FString(searchpathstring);
|
|
}
|
|
|
|
const char *nextchars = searchpathstring;
|
|
FString out = FString(searchpathstring, dollar - searchpathstring);
|
|
while ( (dollar != NULL) && (*nextchars != 0) )
|
|
{
|
|
size_t length = strspn(dollar + 1, envvarnamechars);
|
|
if (length != 0)
|
|
{
|
|
FString varname = FString(dollar + 1, length);
|
|
if (stricmp(varname, "progdir") == 0)
|
|
{
|
|
out += progdir;
|
|
}
|
|
else
|
|
{
|
|
char *varvalue = getenv(varname);
|
|
if ( (varvalue != NULL) && (strlen(varvalue) != 0) )
|
|
{
|
|
out += varvalue;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
out += '$';
|
|
}
|
|
nextchars = dollar + length + 1;
|
|
dollar = strchr(nextchars, '$');
|
|
if (dollar != NULL)
|
|
{
|
|
out += FString(nextchars, dollar - nextchars);
|
|
}
|
|
}
|
|
if (*nextchars != 0)
|
|
{
|
|
out += nextchars;
|
|
}
|
|
return out;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// NicePath
|
|
//
|
|
// Handles paths with leading ~ characters on Unix as well as environment
|
|
// variable substitution. On Windows, this is identical to ExpandEnvVars.
|
|
//
|
|
//==========================================================================
|
|
|
|
FString NicePath(const char *path)
|
|
{
|
|
#ifdef _WIN32
|
|
return ExpandEnvVars(path);
|
|
#else
|
|
if (path == NULL || *path == '\0')
|
|
{
|
|
return FString("");
|
|
}
|
|
if (*path != '~')
|
|
{
|
|
return ExpandEnvVars(path);
|
|
}
|
|
|
|
passwd *pwstruct;
|
|
const char *slash;
|
|
|
|
if (path[1] == '/' || path[1] == '\0')
|
|
{ // Get my home directory
|
|
pwstruct = getpwuid(getuid());
|
|
slash = path + 1;
|
|
}
|
|
else
|
|
{ // Get somebody else's home directory
|
|
slash = strchr(path, '/');
|
|
if (slash == NULL)
|
|
{
|
|
slash = path + strlen(path);
|
|
}
|
|
FString who(path, slash - path);
|
|
pwstruct = getpwnam(who);
|
|
}
|
|
if (pwstruct == NULL)
|
|
{
|
|
return ExpandEnvVars(path);
|
|
}
|
|
FString where(pwstruct->pw_dir);
|
|
if (*slash != '\0')
|
|
{
|
|
where += ExpandEnvVars(slash);
|
|
}
|
|
return where;
|
|
#endif
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
//
|
|
// ScanDirectory
|
|
//
|
|
//==========================================================================
|
|
|
|
bool ScanDirectory(TArray<FFileList> &list, const char *dirpath)
|
|
{
|
|
findstate_t find;
|
|
FString dirmatch;
|
|
|
|
dirmatch << dirpath << "*";
|
|
|
|
auto handle = I_FindFirst(dirmatch.GetChars(), &find);
|
|
if (handle == ((void*)(-1)))
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
auto attr = I_FindAttr(&find);
|
|
if (attr & FA_HIDDEN)
|
|
{
|
|
// Skip hidden files and directories. (Prevents SVN bookkeeping
|
|
// info from being included.)
|
|
continue;
|
|
}
|
|
auto fn = I_FindName(&find);
|
|
|
|
if (attr & FA_DIREC)
|
|
{
|
|
if (fn[0] == '.' &&
|
|
(fn[1] == '\0' ||
|
|
(fn[1] == '.' && fn[2] == '\0')))
|
|
{
|
|
// Do not record . and .. directories.
|
|
continue;
|
|
}
|
|
|
|
FFileList* fl = &list[list.Reserve(1)];
|
|
fl->Filename << dirpath << fn;
|
|
fl->isDirectory = true;
|
|
FString newdir = fl->Filename;
|
|
newdir << "/";
|
|
ScanDirectory(list, newdir);
|
|
}
|
|
else
|
|
{
|
|
FFileList* fl = &list[list.Reserve(1)];
|
|
fl->Filename << dirpath << fn;
|
|
fl->isDirectory = false;
|
|
}
|
|
}
|
|
while (I_FindNext(handle, &find) == 0);
|
|
I_FindClose(handle);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
bool IsAbsPath(const char *name)
|
|
{
|
|
if (IsSeperator(name[0])) return true;
|
|
#ifdef _WIN32
|
|
/* [A-Za-z]: (for Windows) */
|
|
if (isalpha(name[0]) && name[1] == ':') return true;
|
|
#endif /* _WIN32 */
|
|
return 0;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
void NormalizeFileName(FString& str)
|
|
{
|
|
FixPathSeperator(str);
|
|
auto splits = str.Split("/");
|
|
for (unsigned i = 1; i < splits.Size(); i++)
|
|
{
|
|
if (splits[i].Compare(".") == 0)
|
|
{
|
|
splits.Delete(i);
|
|
i--;
|
|
}
|
|
|
|
if (splits[i].Compare("..") == 0 && splits[i - 1].Compare("..") != 0)
|
|
{
|
|
splits.Delete(i);
|
|
splits.Delete(i - 1);
|
|
i -= 2;
|
|
if (i < 1) i = 1;
|
|
}
|
|
}
|
|
str = splits[0];
|
|
for (unsigned i = 1; i < splits.Size(); i++)
|
|
{
|
|
str << "/" << splits[i];
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
//
|
|
//
|
|
//==========================================================================
|
|
|
|
FString M_ZLibError(int zerr)
|
|
{
|
|
if (zerr >= 0)
|
|
{
|
|
return "OK";
|
|
}
|
|
else if (zerr < -6)
|
|
{
|
|
FString out;
|
|
out.Format("%d", zerr);
|
|
return out;
|
|
}
|
|
else
|
|
{
|
|
static const char* errs[6] =
|
|
{
|
|
"Errno",
|
|
"Stream Error",
|
|
"Data Error",
|
|
"Memory Error",
|
|
"Buffer Error",
|
|
"Version Error"
|
|
};
|
|
return errs[-zerr - 1];
|
|
}
|
|
}
|