mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-07 21:41:07 +00:00
471 lines
8.1 KiB
C++
471 lines
8.1 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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#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 <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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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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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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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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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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*/
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bool FileExists (const char *filename)
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{
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FILE *f;
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// [RH] Empty filenames are never there
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if (*filename == 0)
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return false;
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f = fopen (filename, "r");
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if (!f)
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return false;
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fclose (f);
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return true;
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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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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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Extract file parts
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====================
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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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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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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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ParseNum / 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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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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// [RH] Returns true if the specified string is a valid decimal number
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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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// [RH] Checks if text matches the wildcard pattern using ? or *
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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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// [RH] Print a GUID to a text buffer using the standard format.
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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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// [RH] Returns the current local time as ASCII, even if it's too early
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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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/* CreatePath: creates a directory including all levels necessary */
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/* */
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/************************************************************************/
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void DoCreatePath(const char * fn)
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{
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#ifdef _WIN32
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char drive[_MAX_DRIVE];
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#endif
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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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#ifdef _WIN32
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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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#else
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// FIXME: write me
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#endif
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}
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void CreatePath(const char * fn)
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{
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char name[PATH_MAX];
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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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mysnprintf(name, countof(name), "%s/", fn);
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DoCreatePath(name);
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}
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else DoCreatePath(fn);
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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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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 str - start;
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}
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