mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-28 15:02:39 +00:00
870 lines
17 KiB
C++
870 lines
17 KiB
C++
// cmdlib.c (mostly borrowed from the Q2 source)
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#ifdef _WIN32
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#include <direct.h>
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#else
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#include <unistd.h>
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#include <sys/types.h>
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#include <pwd.h>
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#endif
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#include "doomtype.h"
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#include "cmdlib.h"
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#include "i_system.h"
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#include "v_text.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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// Q_filelength
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//
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//==========================================================================
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int Q_filelength (FILE *f)
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{
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int pos;
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int end;
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pos = ftell (f);
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fseek (f, 0, SEEK_END);
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end = ftell (f);
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fseek (f, pos, SEEK_SET);
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return end;
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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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struct stat buff;
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// [RH] Empty filenames are never there
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if (filename == NULL || *filename == 0)
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return false;
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return stat(filename, &buff) == 0 && !(buff.st_mode & S_IFDIR);
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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)
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{
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if (pathname == NULL || *pathname == 0)
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return false;
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struct stat info;
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return stat(pathname, &info) == 0;
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}
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//==========================================================================
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//
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// DefaultExtension -- char array 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 (char *path, const char *extension)
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{
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char *src;
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//
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// if path doesn't have a .EXT, append extension
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// (extension should include the .)
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//
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src = path + strlen(path) - 1;
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while (src != path && !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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strcat (path, extension);
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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) || defined(DOS)
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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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// ParseHex
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//
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//==========================================================================
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int ParseHex (const char *hex)
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{
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const char *str;
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int num;
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num = 0;
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str = hex;
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while (*str)
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{
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num <<= 4;
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if (*str >= '0' && *str <= '9')
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num += *str-'0';
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else if (*str >= 'a' && *str <= 'f')
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num += 10 + *str-'a';
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else if (*str >= 'A' && *str <= 'F')
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num += 10 + *str-'A';
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else {
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Printf ("Bad hex number: %s\n",hex);
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return 0;
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}
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str++;
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}
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return num;
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}
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//==========================================================================
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//
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// ParseNum
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//
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//==========================================================================
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int ParseNum (const char *str)
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{
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if (str[0] == '$')
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return ParseHex (str+1);
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if (str[0] == '0' && str[1] == 'x')
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return ParseHex (str+2);
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return atol (str);
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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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mysnprintf (buffer, buffsize, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
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(uint32)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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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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return asctime (lt);
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}
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else
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{
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return "Pre Jan 01 00:00:00 1970\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 path[PATH_MAX];
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char p[PATH_MAX];
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int i;
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_splitpath(fn,drive,path,NULL,NULL);
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_makepath(p,drive,path,NULL,NULL);
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i=(int)strlen(p);
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if (p[i-1]=='/' || p[i-1]=='\\') p[i-1]=0;
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if (*path) DoCreatePath(p);
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_mkdir(p);
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}
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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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}
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else
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{
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DoCreatePath(fn);
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}
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}
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#else
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void CreatePath(const char *fn)
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{
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char *copy, *p;
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if (fn[0] == '/' && fn[1] == '\0')
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{
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return;
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}
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p = copy = strdup(fn);
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do
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{
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p = strchr(p + 1, '/');
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if (p != NULL)
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{
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*p = '\0';
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}
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struct stat info;
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if (stat(copy, &info) == 0)
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{
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if (info.st_mode & S_IFDIR)
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goto exists;
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}
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if (mkdir(copy, 0755) == -1)
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{ // failed
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return;
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}
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exists: if (p != NULL)
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{
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*p = '/';
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}
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} while (p);
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free(copy);
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}
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#endif
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//==========================================================================
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//
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// strbin1 -- In-place version
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//
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// [RH] Replaces the escape sequences in a string with actual escaped characters.
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// This operation is done in-place. The result is the new length of the string.
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//
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//==========================================================================
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int strbin (char *str)
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{
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char *start = str;
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char *p = str, c;
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int i;
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while ( (c = *p++) ) {
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if (c != '\\') {
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*str++ = c;
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} else {
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switch (*p) {
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case 'a':
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*str++ = '\a';
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break;
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case 'b':
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*str++ = '\b';
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break;
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case 'c':
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*str++ = '\034'; // TEXTCOLOR_ESCAPE
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break;
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case 'f':
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*str++ = '\f';
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break;
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case 'n':
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*str++ = '\n';
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break;
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case 't':
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*str++ = '\t';
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break;
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case 'r':
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*str++ = '\r';
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break;
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case 'v':
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*str++ = '\v';
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break;
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case '?':
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*str++ = '\?';
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break;
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case '\n':
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break;
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case 'x':
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case 'X':
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c = 0;
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p++;
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for (i = 0; i < 2; i++) {
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c <<= 4;
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if (*p >= '0' && *p <= '9')
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c += *p-'0';
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else if (*p >= 'a' && *p <= 'f')
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c += 10 + *p-'a';
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else if (*p >= 'A' && *p <= 'F')
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c += 10 + *p-'A';
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else
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break;
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p++;
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}
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*str++ = c;
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break;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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c = 0;
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for (i = 0; i < 3; i++) {
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c <<= 3;
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if (*p >= '0' && *p <= '7')
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c += *p-'0';
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else
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break;
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p++;
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}
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*str++ = c;
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break;
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default:
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*str++ = *p;
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break;
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}
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p++;
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}
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}
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*str = 0;
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return int(str - start);
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}
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//==========================================================================
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//
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// strbin1 -- String-creating version
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//
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// [RH] Replaces the escape sequences in a string with actual escaped characters.
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// This operation is done in-place.
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//
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//==========================================================================
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FString strbin1 (const char *start)
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{
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FString result;
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const char *p = start;
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char c;
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int i;
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while ( (c = *p++) ) {
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if (c != '\\') {
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result << c;
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} else {
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switch (*p) {
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case 'a':
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result << '\a';
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break;
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case 'b':
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result << '\b';
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break;
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case 'c':
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result << '\034'; // TEXTCOLOR_ESCAPE
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break;
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case 'f':
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result << '\f';
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break;
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case 'n':
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result << '\n';
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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;
|
|
p++;
|
|
for (i = 0; i < 2; i++) {
|
|
c <<= 4;
|
|
if (*p >= '0' && *p <= '9')
|
|
c += *p-'0';
|
|
else if (*p >= 'a' && *p <= 'f')
|
|
c += 10 + *p-'a';
|
|
else if (*p >= 'A' && *p <= 'F')
|
|
c += 10 + *p-'A';
|
|
else
|
|
break;
|
|
p++;
|
|
}
|
|
result << c;
|
|
break;
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
c = 0;
|
|
for (i = 0; i < 3; i++) {
|
|
c <<= 3;
|
|
if (*p >= '0' && *p <= '7')
|
|
c += *p-'0';
|
|
else
|
|
break;
|
|
p++;
|
|
}
|
|
result << c;
|
|
break;
|
|
default:
|
|
result << *p;
|
|
break;
|
|
}
|
|
p++;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// CleanseString
|
|
//
|
|
// Does some mild sanity checking on a string: If it ends with an incomplete
|
|
// color escape, the escape is removed.
|
|
//
|
|
//==========================================================================
|
|
|
|
void CleanseString(char *str)
|
|
{
|
|
char *escape = strrchr(str, TEXTCOLOR_ESCAPE);
|
|
if (escape != NULL)
|
|
{
|
|
if (escape[1] == '\0')
|
|
{
|
|
*escape = '\0';
|
|
}
|
|
else if (escape[1] == '[')
|
|
{
|
|
char *close = strchr(escape + 2, ']');
|
|
if (close == NULL)
|
|
{
|
|
*escape = '\0';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//==========================================================================
|
|
//
|
|
// 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
|
|
}
|