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quakespasm/Quake/common.cpp
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/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others
Copyright (C) 2010-2014 QuakeSpasm developers
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// common.c -- misc functions used in client and server
#include <cstring>
#include "quakedef.hpp"
#include "q_ctype.hpp"
#include <errno.h>
#include <sstream>
#include "miniz.hpp"
static char *largv[MAX_NUM_ARGVS + 1];
static char argvdummy[] = " ";
int safemode;
convar registered = {"registered", "1", {.rom = true}}; /* set to correct value in COM_CheckRegistered() */
convar cmdline = {"cmdline", "", {.rom = true}/*|CVAR_SERVERINFO*/}; /* sending cmdline upon CCREQ_RULE_INFO is evil */
static bool com_modified; // set true if using non-id files
bool fitzmode;
static void COM_Path_f(void);
// if a packfile directory differs from this, it is assumed to be hacked
#define PAK0_COUNT 339 /* id1/pak0.pak - v1.0x */
#define PAK0_CRC_V100 13900 /* id1/pak0.pak - v1.00 */
#define PAK0_CRC_V101 62751 /* id1/pak0.pak - v1.01 */
#define PAK0_CRC_V106 32981 /* id1/pak0.pak - v1.06 */
#define PAK0_CRC (PAK0_CRC_V106)
#define PAK0_COUNT_V091 308 /* id1/pak0.pak - v0.91/0.92, not supported */
#define PAK0_CRC_V091 28804 /* id1/pak0.pak - v0.91/0.92, not supported */
int com_argc;
char **com_argv;
#define CMDLINE_LENGTH 256 /* johnfitz -- mirrored in cmd.c */
char com_cmdline[CMDLINE_LENGTH];
bool standard_quake = true, rogue, hipnotic;
// this graphic needs to be in the pak file to use registered features
static unsigned short pop[] =
{
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x6600, 0x0000, 0x0000, 0x0000, 0x6600, 0x0000,
0x0000, 0x0066, 0x0000, 0x0000, 0x0000, 0x0000, 0x0067, 0x0000,
0x0000, 0x6665, 0x0000, 0x0000, 0x0000, 0x0000, 0x0065, 0x6600,
0x0063, 0x6561, 0x0000, 0x0000, 0x0000, 0x0000, 0x0061, 0x6563,
0x0064, 0x6561, 0x0000, 0x0000, 0x0000, 0x0000, 0x0061, 0x6564,
0x0064, 0x6564, 0x0000, 0x6469, 0x6969, 0x6400, 0x0064, 0x6564,
0x0063, 0x6568, 0x6200, 0x0064, 0x6864, 0x0000, 0x6268, 0x6563,
0x0000, 0x6567, 0x6963, 0x0064, 0x6764, 0x0063, 0x6967, 0x6500,
0x0000, 0x6266, 0x6769, 0x6a68, 0x6768, 0x6a69, 0x6766, 0x6200,
0x0000, 0x0062, 0x6566, 0x6666, 0x6666, 0x6666, 0x6562, 0x0000,
0x0000, 0x0000, 0x0062, 0x6364, 0x6664, 0x6362, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0062, 0x6662, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0061, 0x6661, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x6500, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x6400, 0x0000, 0x0000, 0x0000
};
/*
All of Quake's data access is through a hierchal file system, but the contents
of the file system can be transparently merged from several sources.
The "base directory" is the path to the directory holding the quake.exe and all
game directories. The sys_* files pass this to host_init in quakeparms_t->basedir.
This can be overridden with the "-basedir" command line parm to allow code
debugging in a different directory. The base directory is only used during
filesystem initialization.
The "game directory" is the first tree on the search path and directory that all
generated files (savegames, screenshots, demos, config files) will be saved to.
This can be overridden with the "-game" command line parameter. The game
directory can never be changed while quake is executing. This is a precacution
against having a malicious server instruct clients to write files over areas they
shouldn't.
The "cache directory" is only used during development to save network bandwidth,
especially over ISDN / T1 lines. If there is a cache directory specified, when
a file is found by the normal search path, it will be mirrored into the cache
directory, then opened there.
FIXME:
The file "parms.txt" will be read out of the game directory and appended to the
current command line arguments to allow different games to initialize startup
parms differently. This could be used to add a "-sspeed 22050" for the high
quality sound edition. Because they are added at the end, they will not
override an explicit setting on the original command line.
*/
//============================================================================
// ClearLink is used for new headnodes
void ClearLink(link_t *l) {
l->prev = l->next = l;
}
void RemoveLink(link_t *l) {
l->next->prev = l->prev;
l->prev->next = l->next;
}
void InsertLinkBefore(link_t *l, link_t *before) {
l->next = before;
l->prev = before->prev;
l->prev->next = l;
l->next->prev = l;
}
void InsertLinkAfter(link_t *l, link_t *after) {
l->next = after->next;
l->prev = after;
l->prev->next = l;
l->next->prev = l;
}
/*
============================================================================
DYNAMIC VECTORS
============================================================================
*/
void Vec_Grow(void **pvec, size_t element_size, size_t count) {
vec_header_t header;
if (*pvec)
header = VEC_HEADER(*pvec);
else
header.size = header.capacity = 0;
if (header.size + count > header.capacity) {
void *new_buffer;
size_t total_size;
header.capacity = header.size + count;
header.capacity += header.capacity >> 1;
if (header.capacity < 16)
header.capacity = 16;
total_size = sizeof(vec_header_t) + header.capacity * element_size;
if (*pvec)
new_buffer = realloc(((vec_header_t *) *pvec) - 1, total_size);
else
new_buffer = malloc(total_size);
if (!new_buffer)
Sys_Error("Vec_Grow: failed to allocate %lu bytes\n", (unsigned long) total_size);
*pvec = 1 + (vec_header_t *) new_buffer;
VEC_HEADER(*pvec) = header;
}
}
void Vec_Append(void **pvec, size_t element_size, const void *data, size_t count) {
if (!count)
return;
Vec_Grow(pvec, element_size, count);
memcpy((byte *) *pvec + VEC_HEADER(*pvec).size, data, count * element_size);
VEC_HEADER(*pvec).size += count;
}
void Vec_Clear(void **pvec) {
if (*pvec)
VEC_HEADER(*pvec).size = 0;
}
void Vec_Free(void **pvec) {
if (*pvec) {
free(&VEC_HEADER(*pvec));
*pvec = NULL;
}
}
/*
============================================================================
LIBRARY REPLACEMENT FUNCTIONS
============================================================================
*/
int q_strcasecmp(const char *s1, const char *s2) {
const char *p1 = s1;
const char *p2 = s2;
char c1, c2;
if (p1 == p2)
return 0;
do {
c1 = q_tolower(*p1++);
c2 = q_tolower(*p2++);
if (c1 == '\0')
break;
} while (c1 == c2);
return (int) (c1 - c2);
}
int q_strncasecmp(const char *s1, const char *s2, size_t n) {
const char *p1 = s1;
const char *p2 = s2;
char c1, c2;
if (p1 == p2 || n == 0)
return 0;
do {
c1 = q_tolower(*p1++);
c2 = q_tolower(*p2++);
if (c1 == '\0' || c1 != c2)
break;
} while (--n > 0);
return (int) (c1 - c2);
}
char *q_strcasestr(const char *haystack, const char *needle) {
const size_t len = strlen(needle);
while (*haystack) {
if (!q_strncasecmp(haystack, needle, len))
return (char *) haystack;
++haystack;
}
return NULL;
}
char *q_strlwr(char *str) {
char *c;
c = str;
while (*c) {
*c = q_tolower(*c);
c++;
}
return str;
}
char *q_strupr(char *str) {
char *c;
c = str;
while (*c) {
*c = q_toupper(*c);
c++;
}
return str;
}
/* platform dependant (v)snprintf function names: */
#if defined(_WIN32)
#define snprintf_func _snprintf
#define vsnprintf_func _vsnprintf
#else
#define snprintf_func snprintf
#define vsnprintf_func vsnprintf
#endif
int q_vsnprintf(char *str, size_t size, const char *format, va_list args) {
int ret;
ret = vsnprintf_func(str, size, format, args);
if (ret < 0)
ret = (int) size;
if (size == 0) /* no buffer */
return ret;
if ((size_t) ret >= size)
str[size - 1] = '\0';
return ret;
}
int q_snprintf(char *str, size_t size, const char *format, ...) {
int ret;
va_list argptr;
va_start(argptr, format);
ret = q_vsnprintf(str, size, format, argptr);
va_end(argptr);
return ret;
}
/*
============================================================================
BYTE ORDER FUNCTIONS
============================================================================
*/
bool host_bigendian;
short (*BigShort)(short l);
short (*LittleShort)(short l);
int (*BigLong)(int l);
int (*LittleLong)(int l);
float (*BigFloat)(float l);
float (*LittleFloat)(float l);
short ShortSwap(short l) {
byte b1, b2;
b1 = l & 255;
b2 = (l >> 8) & 255;
return (b1 << 8) + b2;
}
short ShortNoSwap(short l) {
return l;
}
int LongSwap(int l) {
byte b1, b2, b3, b4;
b1 = l & 255;
b2 = (l >> 8) & 255;
b3 = (l >> 16) & 255;
b4 = (l >> 24) & 255;
return ((int) b1 << 24) + ((int) b2 << 16) + ((int) b3 << 8) + b4;
}
int LongNoSwap(int l) {
return l;
}
float FloatSwap(float f) {
union {
float f;
byte b[4];
} dat1, dat2;
dat1.f = f;
dat2.b[0] = dat1.b[3];
dat2.b[1] = dat1.b[2];
dat2.b[2] = dat1.b[1];
dat2.b[3] = dat1.b[0];
return dat2.f;
}
float FloatNoSwap(float f) {
return f;
}
/*
==============================================================================
MESSAGE IO FUNCTIONS
Handles byte ordering and avoids alignment errors
==============================================================================
*/
//
// writing functions
//
void MSG_WriteChar(sizebuf_t *sb, int c) {
byte *buf;
#ifdef PARANOID
if (c < -128 || c > 127)
Sys_Error("MSG_WriteChar: range error");
#endif
buf = (byte *) SZ_GetSpace(sb, 1);
buf[0] = c;
}
void MSG_WriteByte(sizebuf_t *sb, int c) {
byte *buf;
#ifdef PARANOID
if (c < 0 || c > 255)
Sys_Error("MSG_WriteByte: range error");
#endif
buf = (byte *) SZ_GetSpace(sb, 1);
buf[0] = c;
}
void MSG_WriteShort(sizebuf_t *sb, int c) {
byte *buf;
#ifdef PARANOID
if (c < ((short) 0x8000) || c > (short) 0x7fff)
Sys_Error("MSG_WriteShort: range error");
#endif
buf = (byte *) SZ_GetSpace(sb, 2);
buf[0] = c & 0xff;
buf[1] = c >> 8;
}
void MSG_WriteLong(sizebuf_t *sb, int c) {
byte *buf;
buf = (byte *) SZ_GetSpace(sb, 4);
buf[0] = c & 0xff;
buf[1] = (c >> 8) & 0xff;
buf[2] = (c >> 16) & 0xff;
buf[3] = c >> 24;
}
void MSG_WriteFloat(sizebuf_t *sb, float f) {
union {
float f;
int l;
} dat;
dat.f = f;
dat.l = LittleLong(dat.l);
SZ_Write(sb, &dat.l, 4);
}
void MSG_WriteString(sizebuf_t *sb, const char *s) {
if (!s)
SZ_Write(sb, "", 1);
else
SZ_Write(sb, s, std::strlen(s) + 1);
}
//johnfitz -- original behavior, 13.3 fixed point coords, max range +-4096
void MSG_WriteCoord16(sizebuf_t *sb, float f) {
MSG_WriteShort(sb, Q_rint(f*8));
}
//johnfitz -- 16.8 fixed point coords, max range +-32768
void MSG_WriteCoord24(sizebuf_t *sb, float f) {
MSG_WriteShort(sb, f);
MSG_WriteByte(sb, (int) (f * 255) % 255);
}
//johnfitz -- 32-bit float coords
void MSG_WriteCoord32f(sizebuf_t *sb, float f) {
MSG_WriteFloat(sb, f);
}
void MSG_WriteCoord(sizebuf_t *sb, float f, unsigned int flags) {
if (flags & PRFL_FLOATCOORD)
MSG_WriteFloat(sb, f);
else if (flags & PRFL_INT32COORD)
MSG_WriteLong(sb, Q_rint(f * 16));
else if (flags & PRFL_24BITCOORD)
MSG_WriteCoord24(sb, f);
else MSG_WriteCoord16(sb, f);
}
void MSG_WriteAngle(sizebuf_t *sb, float f, unsigned int flags) {
if (flags & PRFL_FLOATANGLE)
MSG_WriteFloat(sb, f);
else if (flags & PRFL_SHORTANGLE)
MSG_WriteShort(sb, Q_rint(f * 65536.0 / 360.0) & 65535);
else MSG_WriteByte(sb, Q_rint(f * 256.0 / 360.0) & 255); //johnfitz -- use Q_rint instead of (int) }
}
//johnfitz -- for PROTOCOL_FITZQUAKE
void MSG_WriteAngle16(sizebuf_t *sb, float f, unsigned int flags) {
if (flags & PRFL_FLOATANGLE)
MSG_WriteFloat(sb, f);
else MSG_WriteShort(sb, Q_rint(f * 65536.0 / 360.0) & 65535);
}
//johnfitz
//
// reading functions
//
int msg_readcount;
bool msg_badread;
void MSG_BeginReading(void) {
msg_readcount = 0;
msg_badread = false;
}
// returns -1 and sets msg_badread if no more characters are available
int MSG_ReadChar(void) {
int c;
if (msg_readcount + 1 > net_message.cursize) {
msg_badread = true;
return -1;
}
c = (signed char) net_message.data[msg_readcount];
msg_readcount++;
return c;
}
int MSG_ReadByte(void) {
int c;
if (msg_readcount + 1 > net_message.cursize) {
msg_badread = true;
return -1;
}
c = (unsigned char) net_message.data[msg_readcount];
msg_readcount++;
return c;
}
int MSG_ReadShort(void) {
int c;
if (msg_readcount + 2 > net_message.cursize) {
msg_badread = true;
return -1;
}
c = (short) (net_message.data[msg_readcount]
+ (net_message.data[msg_readcount + 1] << 8));
msg_readcount += 2;
return c;
}
int MSG_ReadLong(void) {
int c;
if (msg_readcount + 4 > net_message.cursize) {
msg_badread = true;
return -1;
}
c = net_message.data[msg_readcount]
+ (net_message.data[msg_readcount + 1] << 8)
+ (net_message.data[msg_readcount + 2] << 16)
+ (net_message.data[msg_readcount + 3] << 24);
msg_readcount += 4;
return c;
}
float MSG_ReadFloat(void) {
union {
byte b[4];
float f;
int l;
} dat;
dat.b[0] = net_message.data[msg_readcount];
dat.b[1] = net_message.data[msg_readcount + 1];
dat.b[2] = net_message.data[msg_readcount + 2];
dat.b[3] = net_message.data[msg_readcount + 3];
msg_readcount += 4;
dat.l = LittleLong(dat.l);
return dat.f;
}
const char *MSG_ReadString(void) {
static char string[2048];
int c;
size_t l;
l = 0;
do {
c = MSG_ReadByte();
if (c == -1 || c == 0)
break;
string[l] = c;
l++;
} while (l < sizeof(string) - 1);
string[l] = 0;
return string;
}
//johnfitz -- original behavior, 13.3 fixed point coords, max range +-4096
float MSG_ReadCoord16(void) {
return MSG_ReadShort() * (1.0 / 8);
}
//johnfitz -- 16.8 fixed point coords, max range +-32768
float MSG_ReadCoord24(void) {
return MSG_ReadShort() + MSG_ReadByte() * (1.0 / 255);
}
//johnfitz -- 32-bit float coords
float MSG_ReadCoord32f(void) {
return MSG_ReadFloat();
}
float MSG_ReadCoord(unsigned int flags) {
if (flags & PRFL_FLOATCOORD)
return MSG_ReadFloat();
else if (flags & PRFL_INT32COORD)
return MSG_ReadLong() * (1.0 / 16.0);
else if (flags & PRFL_24BITCOORD)
return MSG_ReadCoord24();
else return MSG_ReadCoord16();
}
float MSG_ReadAngle(unsigned int flags) {
if (flags & PRFL_FLOATANGLE)
return MSG_ReadFloat();
else if (flags & PRFL_SHORTANGLE)
return MSG_ReadShort() * (360.0 / 65536);
else return MSG_ReadChar() * (360.0 / 256);
}
//johnfitz -- for PROTOCOL_FITZQUAKE
float MSG_ReadAngle16(unsigned int flags) {
if (flags & PRFL_FLOATANGLE)
return MSG_ReadFloat(); // make sure
else return MSG_ReadShort() * (360.0 / 65536);
}
//johnfitz
//===========================================================================
void SZ_Alloc(sizebuf_t *buf, int startsize) {
if (startsize < 256)
startsize = 256;
buf->data = (byte *) Hunk_AllocName(startsize, "sizebuf");
buf->maxsize = startsize;
buf->cursize = 0;
}
void SZ_Free(sizebuf_t *buf) {
// Z_Free (buf->data);
// buf->data = NULL;
// buf->maxsize = 0;
buf->cursize = 0;
}
void SZ_Clear(sizebuf_t *buf) {
buf->cursize = 0;
}
void *SZ_GetSpace(sizebuf_t *buf, int length) {
void *data;
if (buf->cursize + length > buf->maxsize) {
if (!buf->allowoverflow)
Host_Error("SZ_GetSpace: overflow without allowoverflow set");
// ericw -- made Host_Error to be less annoying
if (length > buf->maxsize)
Sys_Error("SZ_GetSpace: %i is > full buffer size", length);
buf->overflowed = true;
console::info("SZ_GetSpace: overflow\n");
SZ_Clear(buf);
}
data = buf->data + buf->cursize;
buf->cursize += length;
return data;
}
void SZ_Write(sizebuf_t *buf, const void *data, int length) {
std::memcpy(SZ_GetSpace(buf, length), data, length);
}
void SZ_Print(sizebuf_t *buf, const char *data) {
int len = std::strlen(data) + 1;
if (buf->data[buf->cursize - 1]) {
/* no trailing 0 */
std::memcpy(SZ_GetSpace(buf, len), data, len);
} else {
/* write over trailing 0 */
std::memcpy(static_cast<byte *>(SZ_GetSpace(buf, len - 1)) - 1, data, len);
}
}
//============================================================================
/*
============
COM_SkipPath
============
*/
const char *COM_SkipPath(const char *pathname) {
const char *last;
last = pathname;
while (*pathname) {
if (*pathname == '/')
last = pathname + 1;
pathname++;
}
return last;
}
/*
============
COM_StripExtension
============
*/
void COM_StripExtension(const char *in, char *out, size_t outsize) {
int length;
if (!*in) {
*out = '\0';
return;
}
if (in != out) /* copy when not in-place editing */
q_strlcpy(out, in, outsize);
length = (int) strlen(out) - 1;
while (length > 0 && out[length] != '.') {
--length;
if (out[length] == '/' || out[length] == '\\')
return; /* no extension */
}
if (length > 0)
out[length] = '\0';
}
/*
============
COM_FileGetExtension - doesn't return NULL
============
*/
const char *COM_FileGetExtension(const char *in) {
const char *src;
size_t len;
len = strlen(in);
if (len < 2) /* nothing meaningful */
return "";
src = in + len - 1;
while (src != in && src[-1] != '.')
src--;
if (src == in || strchr(src, '/') != NULL || strchr(src, '\\') != NULL)
return ""; /* no extension, or parent directory has a dot */
return src;
}
/*
============
COM_ExtractExtension
============
*/
void COM_ExtractExtension(const char *in, char *out, size_t outsize) {
const char *ext = COM_FileGetExtension(in);
if (!*ext)
*out = '\0';
else
q_strlcpy(out, ext, outsize);
}
/*
============
COM_FileBase
take 'somedir/otherdir/filename.ext',
write only 'filename' to the output
============
*/
void COM_FileBase(const char *in, char *out, size_t outsize) {
const char *dot, *slash, *s;
s = in;
slash = in;
dot = NULL;
while (*s) {
if (*s == '/')
slash = s + 1;
if (*s == '.')
dot = s;
s++;
}
if (dot == NULL)
dot = s;
if (dot - slash < 2)
q_strlcpy(out, "?model?", outsize);
else {
size_t len = dot - slash;
if (len >= outsize)
len = outsize - 1;
memcpy(out, slash, len);
out[len] = '\0';
}
}
/*
==================
COM_DefaultExtension
if path doesn't have a .EXT, append extension
(extension should include the leading ".")
==================
*/
#if 0 /* can be dangerous */
void COM_DefaultExtension(char *path, const char *extension, size_t len) {
char *src;
if (!*path) return;
src = path + strlen(path) - 1;
while (*src != '/' && *src != '\\' && src != path) {
if (*src == '.')
return; // it has an extension
src--;
}
q_strlcat(path, extension, len);
}
#endif
/*
==================
COM_AddExtension
if path extension doesn't match .EXT, append it
(extension should include the leading ".")
==================
*/
void COM_AddExtension(char *path, const char *extension, size_t len) {
if (strcmp(COM_FileGetExtension(path), extension + 1) != 0)
q_strlcat(path, extension, len);
}
namespace common {
void init() {
int i = 0x12345678;
/* U N I X */
/*
BE_ORDER: 12 34 56 78
U N I X
LE_ORDER: 78 56 34 12
X I N U
PDP_ORDER: 34 12 78 56
N U X I
*/
if (*reinterpret_cast<char *>(&i) == 0x12) {
host_bigendian = true;
}
else if (*reinterpret_cast<char *>(&i) == 0x78) {
host_bigendian = false;
}
else {
Sys_Error("Unsupported endianism.");
}
if (host_bigendian) {
BigShort = ShortNoSwap;
LittleShort = ShortSwap;
BigLong = LongNoSwap;
LittleLong = LongSwap;
BigFloat = FloatNoSwap;
LittleFloat = FloatSwap;
} else /* assumed LITTLE_ENDIAN. */
{
BigShort = ShortSwap;
LittleShort = ShortNoSwap;
BigLong = LongSwap;
LittleLong = LongNoSwap;
BigFloat = FloatSwap;
LittleFloat = FloatNoSwap;
}
if (check_param("-fitz").has_value()) {
fitzmode = true;
}
}
std::optional<size_t> check_param(std::string_view parm) {
for (auto i = 1; i < com_argc; i++) {
if (!com_argv[i]) {
continue; // NEXTSTEP sometimes clears appkit vars.
}
if (parm == com_argv[i]) {
return i;
}
}
return std::nullopt;
}
/**
* Parses a single token from a string-stream.
*
* @param ss String-stream containing the data buffer to parse.
* @return A token, if parseable, otherwise \c std::nullopt .
*/
std::optional<std::string> parse_token(std::istringstream &ss) {
std::string res{};
skipwhite:
while (ss.peek() <= ' ') {
ss.get();
if (ss.peek() == '\0') {
return std::nullopt;
}
if (ss.eof()) {
return std::nullopt;
}
}
if (ss.peek() == '/') {
ss.get();
switch (ss.peek()) {
case '/': {
std::string _ignore;
std::getline(ss, _ignore);
goto skipwhite;
}
case '*': {
ss.get();
commentwait:
while (ss.peek() != '*') {
ss.get();
}
ss.get();
if (ss.peek() != '/') {
goto commentwait;
}
ss.get();
goto skipwhite;
}
default:
ss.unget();
}
}
if (ss.peek() == '"') {
ss.get();
std::getline(ss, res, '"');
return res;
}
if (ss.peek() == '{' || ss.peek() == '}' || ss.peek() == '(' || ss.peek() == ')' || ss.peek() == '\'' || ss.
peek() == ':') {
res += static_cast<char>(ss.get());
return res;
}
do {
res += static_cast<char>(ss.get());
if (ss.peek() == '{' || ss.peek() == '}' || ss.peek() == '(' || ss.peek() == ')' || ss.peek() == '\'') {
break;
}
} while (ss.peek() > ' ');
return res;
}
/**
* Parses a string of non-whitespace, and then attempts to consume a newline.
*
* N.B. This is implementing the function as \a described, not following the original
* implementation. The original implementation is bugged.
* @param ss
* @return
*/
std::string parse_string_newline(std::istringstream &ss) {
std::string res;
while (ss.peek() > ' ') {
res += static_cast<char>(ss.get());
}
if (ss.peek() == '\n') {
ss.get();
}
return res;
}
/**
* Attempts to parse an int, followed by a newline.
*
* @param ss
* @return
*/
int parse_int_newline(std::istringstream &ss) {
int res;
ss >> res;
if (ss.peek() == '\n') {
ss.get();
}
return res;
}
/**
* Attempts to parse a float followed by a newline.
*
* @param ss
* @return
*/
float parse_float_newline(std::istringstream &ss) {
float res;
ss >> res;
if (ss.peek() == '\n') {
ss.get();
}
return res;
}
}
/*
================
COM_CheckRegistered
Looks for the pop.txt file and verifies it.
Sets the "registered" cvar.
Immediately exits out if an alternate game was attempted to be started without
being registered.
================
*/
static void COM_CheckRegistered(void) {
int h;
unsigned short check[128];
int i;
COM_OpenFile("gfx/pop.lmp", &h, NULL);
if (h == -1) {
convar::set_rom("registered", "0");
console::info("Playing shareware version.\n");
if (com_modified)
Sys_Error("You must have the registered version to use modified games.\n\n"
"Basedir is: %s\n\n"
"Check that this has an " GAMENAME " subdirectory containing pak0.pak and pak1.pak, "
"or use the -basedir command-line option to specify another directory.",
com_basedir);
return;
}
i = Sys_FileRead(h, check, sizeof(check));
COM_CloseFile(h);
if (i != (int) sizeof(check))
goto corrupt;
for (i = 0; i < 128; i++) {
if (pop[i] != (unsigned short) BigShort(check[i])) {
corrupt:
Sys_Error("Corrupted data file.");
}
}
for (i = 0; com_cmdline[i]; i++) {
if (com_cmdline[i] != ' ')
break;
}
convar::set_rom("cmdline", &com_cmdline[i]);
convar::set_rom("registered", "1");
console::info("Playing registered version.\n");
}
/*
================
COM_InitArgv
================
*/
void COM_InitArgv(int argc, char **argv) {
int i, j, n;
// reconstitute the command line for the cmdline externally visible cvar
n = 0;
for (j = 0; (j < MAX_NUM_ARGVS) && (j < argc); j++) {
i = 0;
while ((n < (CMDLINE_LENGTH - 1)) && argv[j][i]) {
com_cmdline[n++] = argv[j][i++];
}
if (n < (CMDLINE_LENGTH - 1))
com_cmdline[n++] = ' ';
else
break;
}
if (n > 0 && com_cmdline[n - 1] == ' ')
com_cmdline[n - 1] = 0; //johnfitz -- kill the trailing space
console::info("Command line: %s\n", com_cmdline);
for (com_argc = 0; (com_argc < MAX_NUM_ARGVS) && (com_argc < argc); com_argc++) {
largv[com_argc] = argv[com_argc];
if (!std::strcmp("-safe", argv[com_argc]))
safemode = 1;
}
largv[com_argc] = argvdummy;
com_argv = largv;
if (common::check_param("-rogue").has_value()) {
rogue = true;
standard_quake = false;
}
if (common::check_param("-hipnotic").has_value() || common::check_param("-quoth").has_value()) //johnfitz -- "-quoth" support
{
hipnotic = true;
standard_quake = false;
}
}
/*
============
va
does a varargs printf into a temp buffer. cycles between
4 different static buffers. the number of buffers cycled
is defined in VA_NUM_BUFFS.
FIXME: make this buffer size safe someday
============
*/
#define VA_NUM_BUFFS 4
#define VA_BUFFERLEN 1024
static char *get_va_buffer(void) {
static char va_buffers[VA_NUM_BUFFS][VA_BUFFERLEN];
static int buffer_idx = 0;
buffer_idx = (buffer_idx + 1) & (VA_NUM_BUFFS - 1);
return va_buffers[buffer_idx];
}
char *va(const char *format, ...) {
va_list argptr;
char *va_buf;
va_buf = get_va_buffer();
va_start(argptr, format);
q_vsnprintf(va_buf, VA_BUFFERLEN, format, argptr);
va_end(argptr);
return va_buf;
}
/*
=============================================================================
QUAKE FILESYSTEM
=============================================================================
*/
int com_filesize;
//
// on-disk pakfile
//
typedef struct {
char name[56];
int filepos, filelen;
} dpackfile_t;
typedef struct {
char id[4];
int dirofs;
int dirlen;
} dpackheader_t;
#define MAX_FILES_IN_PACK 2048
char com_gamedir[MAX_OSPATH];
char com_basedir[MAX_OSPATH];
int file_from_pak; // ZOID: global indicating that file came from a pak
searchpath_t *com_searchpaths;
searchpath_t *com_base_searchpaths;
/*
============
COM_Path_f
============
*/
static void COM_Path_f(void) {
searchpath_t *s;
console::info("Current search path:\n");
for (s = com_searchpaths; s; s = s->next) {
if (s->pack) {
console::info("%s (%i files)\n", s->pack->filename, s->pack->numfiles);
} else
console::info("%s\n", s->filename);
}
}
/*
============
COM_WriteFile
The filename will be prefixed by the current game directory
============
*/
void COM_WriteFile(const char *filename, const void *data, int len) {
int handle;
char name[MAX_OSPATH];
Sys_mkdir(com_gamedir); //johnfitz -- if we've switched to a nonexistant gamedir, create it now so we don't crash
q_snprintf(name, sizeof(name), "%s/%s", com_gamedir, filename);
handle = Sys_FileOpenWrite(name);
if (handle == -1) {
Sys_Printf("COM_WriteFile: failed on %s\n", name);
return;
}
Sys_Printf("COM_WriteFile: %s\n", name);
Sys_FileWrite(handle, data, len);
Sys_FileClose(handle);
}
/*
============
COM_CreatePath
============
*/
void COM_CreatePath(char *path) {
char *ofs;
for (ofs = path + 1; *ofs; ofs++) {
if (*ofs == '/') {
// create the directory
*ofs = 0;
Sys_mkdir(path);
*ofs = '/';
}
}
}
/*
================
COM_filelength
================
*/
long COM_filelength(FILE *f) {
long pos, end;
pos = ftell(f);
fseek(f, 0, SEEK_END);
end = ftell(f);
fseek(f, pos, SEEK_SET);
return end;
}
/*
===========
COM_FindFile
Finds the file in the search path.
Sets com_filesize and one of handle or file
If neither of file or handle is set, this
can be used for detecting a file's presence.
===========
*/
static int COM_FindFile(const char *filename, int *handle, FILE **file,
unsigned int *path_id) {
searchpath_t *search;
char netpath[MAX_OSPATH];
pack_t *pak;
int i;
if (file && handle)
Sys_Error("COM_FindFile: both handle and file set");
file_from_pak = 0;
//
// search through the path, one element at a time
//
for (search = com_searchpaths; search; search = search->next) {
if (search->pack) /* look through all the pak file elements */
{
pak = search->pack;
for (i = 0; i < pak->numfiles; i++) {
if (strcmp(pak->files[i].name, filename) != 0)
continue;
// found it!
com_filesize = pak->files[i].filelen;
file_from_pak = 1;
if (path_id)
*path_id = search->path_id;
if (handle) {
*handle = pak->handle;
Sys_FileSeek(pak->handle, pak->files[i].filepos);
return com_filesize;
} else if (file) {
/* open a new file on the pakfile */
*file = fopen(pak->filename, "rb");
if (*file)
fseek(*file, pak->files[i].filepos, SEEK_SET);
return com_filesize;
} else /* for COM_FileExists() */
{
return com_filesize;
}
}
} else /* check a file in the directory tree */
{
if (!registered.value) {
/* if not a registered version, don't ever go beyond base */
if (strchr(filename, '/') || strchr(filename, '\\'))
continue;
}
q_snprintf(netpath, sizeof(netpath), "%s/%s", search->filename, filename);
if (!(Sys_FileType(netpath) & FS_ENT_FILE))
continue;
if (path_id)
*path_id = search->path_id;
if (handle) {
com_filesize = Sys_FileOpenRead(netpath, &i);
*handle = i;
return com_filesize;
} else if (file) {
*file = fopen(netpath, "rb");
com_filesize = (*file == NULL) ? -1 : COM_filelength(*file);
return com_filesize;
} else {
return 0; /* dummy valid value for COM_FileExists() */
}
}
}
if (strcmp(COM_FileGetExtension(filename), "pcx") != 0
&& strcmp(COM_FileGetExtension(filename), "tga") != 0
&& strcmp(COM_FileGetExtension(filename), "lit") != 0
&& strcmp(COM_FileGetExtension(filename), "vis") != 0
&& strcmp(COM_FileGetExtension(filename), "ent") != 0)
console::debug("FindFile: can't find %s\n", filename);
else console::trace("FindFile: can't find %s\n", filename);
if (handle)
*handle = -1;
if (file)
*file = NULL;
com_filesize = -1;
return com_filesize;
}
/*
===========
COM_FileExists
Returns whether the file is found in the quake filesystem.
===========
*/
bool COM_FileExists(const char *filename, unsigned int *path_id) {
int ret = COM_FindFile(filename, NULL, NULL, path_id);
return (ret == -1) ? false : true;
}
/*
===========
COM_OpenFile
filename never has a leading slash, but may contain directory walks
returns a handle and a length
it may actually be inside a pak file
===========
*/
int COM_OpenFile(const char *filename, int *handle, unsigned int *path_id) {
return COM_FindFile(filename, handle, NULL, path_id);
}
/*
===========
COM_FOpenFile
If the requested file is inside a packfile, a new FILE * will be opened
into the file.
===========
*/
int COM_FOpenFile(const char *filename, FILE **file, unsigned int *path_id) {
return COM_FindFile(filename, NULL, file, path_id);
}
/*
============
COM_CloseFile
If it is a pak file handle, don't really close it
============
*/
void COM_CloseFile(int h) {
searchpath_t *s;
for (s = com_searchpaths; s; s = s->next)
if (s->pack && s->pack->handle == h)
return;
Sys_FileClose(h);
}
/*
============
COM_LoadFile
Filename are reletive to the quake directory.
Allways appends a 0 byte.
============
*/
#define LOADFILE_ZONE 0
#define LOADFILE_HUNK 1
#define LOADFILE_TEMPHUNK 2
#define LOADFILE_CACHE 3
#define LOADFILE_STACK 4
#define LOADFILE_MALLOC 5
static byte *loadbuf;
static cache_user_t *loadcache;
static int loadsize;
byte *COM_LoadFile(const char *path, int usehunk, unsigned int *path_id) {
int h;
byte *buf;
char base[32];
int len, nread;
buf = NULL; // quiet compiler warning
// look for it in the filesystem or pack files
len = COM_OpenFile(path, &h, path_id);
if (h == -1)
return NULL;
// extract the filename base name for hunk tag
COM_FileBase(path, base, sizeof(base));
switch (usehunk) {
case LOADFILE_HUNK:
buf = (byte *) Hunk_AllocName(len + 1, base);
break;
case LOADFILE_TEMPHUNK:
buf = (byte *) Hunk_TempAlloc(len + 1);
break;
case LOADFILE_ZONE:
buf = (byte *) Z_Malloc(len + 1);
break;
case LOADFILE_CACHE:
buf = (byte *) Cache_Alloc(loadcache, len + 1, base);
break;
case LOADFILE_STACK:
if (len < loadsize)
buf = loadbuf;
else
buf = (byte *) Hunk_TempAlloc(len + 1);
break;
case LOADFILE_MALLOC:
buf = (byte *) malloc(len + 1);
break;
default:
Sys_Error("COM_LoadFile: bad usehunk");
}
if (!buf)
Sys_Error("COM_LoadFile: not enough space for %s", path);
((byte *) buf)[len] = 0;
nread = Sys_FileRead(h, buf, len);
COM_CloseFile(h);
if (nread != len)
Sys_Error("COM_LoadFile: Error reading %s", path);
return buf;
}
byte *COM_LoadHunkFile(const char *path, unsigned int *path_id) {
return COM_LoadFile(path, LOADFILE_HUNK, path_id);
}
byte *COM_LoadZoneFile(const char *path, unsigned int *path_id) {
return COM_LoadFile(path, LOADFILE_ZONE, path_id);
}
byte *COM_LoadTempFile(const char *path, unsigned int *path_id) {
return COM_LoadFile(path, LOADFILE_TEMPHUNK, path_id);
}
void COM_LoadCacheFile(const char *path, struct cache_user_s *cu, unsigned int *path_id) {
loadcache = cu;
COM_LoadFile(path, LOADFILE_CACHE, path_id);
}
// uses temp hunk if larger than bufsize
byte *COM_LoadStackFile(const char *path, void *buffer, int bufsize, unsigned int *path_id) {
byte *buf;
loadbuf = (byte *) buffer;
loadsize = bufsize;
buf = COM_LoadFile(path, LOADFILE_STACK, path_id);
return buf;
}
// returns malloc'd memory
byte *COM_LoadMallocFile(const char *path, unsigned int *path_id) {
return COM_LoadFile(path, LOADFILE_MALLOC, path_id);
}
byte *COM_LoadMallocFile_TextMode_OSPath(const char *path, long *len_out) {
FILE *f;
byte *data;
long len, actuallen;
// ericw -- this is used by Host_Loadgame_f. Translate CRLF to LF on load games,
// othewise multiline messages have a garbage character at the end of each line.
// TODO: could handle in a way that allows loading CRLF savegames on mac/linux
// without the junk characters appearing.
f = fopen(path, "rt");
if (f == NULL)
return NULL;
len = COM_filelength(f);
if (len < 0) {
fclose(f);
return NULL;
}
data = (byte *) malloc(len + 1);
if (data == NULL) {
fclose(f);
return NULL;
}
// (actuallen < len) if CRLF to LF translation was performed
actuallen = fread(data, 1, len, f);
if (ferror(f)) {
fclose(f);
free(data);
return NULL;
}
data[actuallen] = '\0';
if (len_out != NULL)
*len_out = actuallen;
fclose(f);
return data;
}
const char *COM_ParseIntNewline(const char *buffer, int *value) {
int consumed = 0;
sscanf(buffer, "%i\n%n", value, &consumed);
return buffer + consumed;
}
const char *COM_ParseFloatNewline(const char *buffer, float *value) {
int consumed = 0;
sscanf(buffer, "%f\n%n", value, &consumed);
return buffer + consumed;
}
/*
=================
COM_LoadPackFile -- johnfitz -- modified based on topaz's tutorial
Takes an explicit (not game tree related) path to a pak file.
Loads the header and directory, adding the files at the beginning
of the list so they override previous pack files.
=================
*/
static pack_t *COM_LoadPackFile(const char *packfile) {
dpackheader_t header;
int i;
packfile_t *newfiles;
int numpackfiles;
pack_t *pack;
int packhandle;
dpackfile_t info[MAX_FILES_IN_PACK];
unsigned short crc;
if (Sys_FileOpenRead(packfile, &packhandle) == -1)
return NULL;
if (Sys_FileRead(packhandle, &header, sizeof(header)) != (int) sizeof(header) ||
header.id[0] != 'P' || header.id[1] != 'A' || header.id[2] != 'C' || header.id[3] != 'K')
Sys_Error("%s is not a packfile", packfile);
header.dirofs = LittleLong(header.dirofs);
header.dirlen = LittleLong(header.dirlen);
numpackfiles = header.dirlen / sizeof(dpackfile_t);
if (header.dirlen < 0 || header.dirofs < 0) {
Sys_Error("Invalid packfile %s (dirlen: %i, dirofs: %i)",
packfile, header.dirlen, header.dirofs);
}
if (!numpackfiles) {
Sys_Printf("WARNING: %s has no files, ignored\n", packfile);
Sys_FileClose(packhandle);
return NULL;
}
if (numpackfiles > MAX_FILES_IN_PACK)
Sys_Error("%s has %i files", packfile, numpackfiles);
if (numpackfiles != PAK0_COUNT)
com_modified = true; // not the original file
newfiles = (packfile_t *) Z_Malloc(numpackfiles * sizeof(packfile_t));
Sys_FileSeek(packhandle, header.dirofs);
if (Sys_FileRead(packhandle, info, header.dirlen) != header.dirlen)
Sys_Error("Error reading %s", packfile);
// crc the directory to check for modifications
CRC_Init(&crc);
for (i = 0; i < header.dirlen; i++)
CRC_ProcessByte(&crc, ((byte *) info)[i]);
if (crc != PAK0_CRC_V106 && crc != PAK0_CRC_V101 && crc != PAK0_CRC_V100)
com_modified = true;
// parse the directory
for (i = 0; i < numpackfiles; i++) {
q_strlcpy(newfiles[i].name, info[i].name, sizeof(newfiles[i].name));
newfiles[i].filepos = LittleLong(info[i].filepos);
newfiles[i].filelen = LittleLong(info[i].filelen);
}
pack = (pack_t *) Z_Malloc(sizeof(pack_t));
q_strlcpy(pack->filename, packfile, sizeof(pack->filename));
pack->handle = packhandle;
pack->numfiles = numpackfiles;
pack->files = newfiles;
//Sys_Printf ("Added packfile %s (%i files)\n", packfile, numpackfiles);
return pack;
}
/*
=================
COM_AddGameDirectory -- johnfitz -- modified based on topaz's tutorial
=================
*/
static void COM_AddGameDirectory(const char *base, const char *dir) {
int i;
unsigned int path_id;
searchpath_t *search;
pack_t *pak, *qspak;
char pakfile[MAX_OSPATH];
bool been_here = false;
q_strlcpy(com_gamedir, va("%s/%s", base, dir), sizeof(com_gamedir));
// assign a path_id to this game directory
if (com_searchpaths)
path_id = com_searchpaths->path_id << 1;
else path_id = 1U;
_add_path:
// add the directory to the search path
search = (searchpath_t *) Z_Malloc(sizeof(searchpath_t));
search->path_id = path_id;
q_strlcpy(search->filename, com_gamedir, sizeof(search->filename));
search->next = com_searchpaths;
com_searchpaths = search;
// add any pak files in the format pak0.pak pak1.pak, ...
for (i = 0; ; i++) {
q_snprintf(pakfile, sizeof(pakfile), "%s/pak%i.pak", com_gamedir, i);
pak = COM_LoadPackFile(pakfile);
if (i != 0 || path_id != 1 || fitzmode)
qspak = NULL;
else {
bool old = com_modified;
if (been_here) base = host_parms->userdir;
q_snprintf(pakfile, sizeof(pakfile), "%s/quakespasm.pak", base);
qspak = COM_LoadPackFile(pakfile);
com_modified = old;
}
if (pak) {
search = (searchpath_t *) Z_Malloc(sizeof(searchpath_t));
search->path_id = path_id;
search->pack = pak;
search->next = com_searchpaths;
com_searchpaths = search;
}
if (qspak) {
search = (searchpath_t *) Z_Malloc(sizeof(searchpath_t));
search->path_id = path_id;
search->pack = qspak;
search->next = com_searchpaths;
com_searchpaths = search;
}
if (!pak) break;
}
if (!been_here && host_parms->userdir != host_parms->basedir) {
been_here = true;
q_strlcpy(com_gamedir, va("%s/%s", host_parms->userdir, dir), sizeof(com_gamedir));
Sys_mkdir(com_gamedir);
goto _add_path;
}
}
//==============================================================================
//johnfitz -- dynamic gamedir stuff -- modified by QuakeSpasm team.
//==============================================================================
static void COM_Game_f(void) {
if (command::argc() > 1) {
const char *p = command::argv(1)->c_str();
const char *p2 = command::argv(2)->c_str();
searchpath_t *search;
if (!registered.value) //disable shareware quake
{
console::info("You must have the registered version to use modified games\n");
return;
}
if (!*p || !strcmp(p, ".") || strstr(p, "..") || strstr(p, "/") || strstr(p, "\\") || strstr(p, ":")) {
console::info("gamedir should be a single directory name, not a path\n");
return;
}
if (*p2) {
if (strcmp(p2, "-hipnotic") && strcmp(p2, "-rogue") && strcmp(p2, "-quoth")) {
console::info("invalid mission pack argument to \"game\"\n");
return;
}
if (!q_strcasecmp(p, GAMENAME)) {
console::info("no mission pack arguments to %s game\n", GAMENAME);
return;
}
}
if (Sys_FileType(va("%s/%s", com_basedir, p)) != FS_ENT_DIRECTORY) {
if (host_parms->userdir == host_parms->basedir || (
Sys_FileType(va("%s/%s", host_parms->userdir, p)) != FS_ENT_DIRECTORY)) {
console::info("No such game directory \"%s\"\n", p);
return;
}
}
if (!q_strcasecmp(p, COM_SkipPath(com_gamedir))) //no change
{
if (com_searchpaths->path_id > 1) {
//current game not id1
if (*p2 && com_searchpaths->path_id == 2) {
// rely on QuakeSpasm extension treating '-game missionpack'
// as '-missionpack', otherwise would be a mess
if (!q_strcasecmp(p, &p2[1]))
goto _same;
console::info("reloading game \"%s\" with \"%s\" support\n", p, &p2[1]);
} else if (!*p2 && com_searchpaths->path_id > 2)
console::info("reloading game \"%s\" without mission pack support\n", p);
else goto _same;
} else {
_same:
console::info("\"game\" is already \"%s\"\n", COM_SkipPath(com_gamedir));
return;
}
}
com_modified = true;
//Kill the server
CL_Disconnect();
Host_ShutdownServer(true);
//Write config file
Host_WriteConfiguration();
//Kill the extra game if it is loaded
while (com_searchpaths != com_base_searchpaths) {
if (com_searchpaths->pack) {
Sys_FileClose(com_searchpaths->pack->handle);
Z_Free(com_searchpaths->pack->files);
Z_Free(com_searchpaths->pack);
}
search = com_searchpaths->next;
Z_Free(com_searchpaths);
com_searchpaths = search;
}
hipnotic = false;
rogue = false;
standard_quake = true;
if (q_strcasecmp(p, GAMENAME)) //game is not id1
{
if (*p2) {
COM_AddGameDirectory(com_basedir, &p2[1]);
standard_quake = false;
if (!strcmp(p2, "-hipnotic") || !strcmp(p2, "-quoth"))
hipnotic = true;
else if (!strcmp(p2, "-rogue"))
rogue = true;
if (q_strcasecmp(p, &p2[1])) //don't load twice
COM_AddGameDirectory(com_basedir, p);
} else {
COM_AddGameDirectory(com_basedir, p);
// QuakeSpasm extension: treat '-game missionpack' as '-missionpack'
if (!q_strcasecmp(p, "hipnotic") || !q_strcasecmp(p, "quoth")) {
hipnotic = true;
standard_quake = false;
} else if (!q_strcasecmp(p, "rogue")) {
rogue = true;
standard_quake = false;
}
}
} else // just update com_gamedir
{
q_snprintf(com_gamedir, sizeof(com_gamedir), "%s/%s",
(host_parms->userdir != host_parms->basedir) ? host_parms->userdir : com_basedir,
GAMENAME);
}
//clear out and reload appropriate data
Cache_Flush();
Mod_ResetAll();
Sky_ClearAll();
if (!isDedicated) {
TexMgr_NewGame();
Draw_NewGame();
R_NewGame();
}
ExtraMaps_NewGame();
Host_Resetdemos();
DemoList_Rebuild();
console::info("\"game\" changed to \"%s\"\n", COM_SkipPath(com_gamedir));
VID_Lock();
command::buffer::add_text("exec quake.rc\n");
command::buffer::add_text("vid_unlock\n");
} else //Diplay the current gamedir
console::info("\"game\" is \"%s\"\n", COM_SkipPath(com_gamedir));
}
/*
=================
COM_InitFilesystem
=================
*/
void COM_InitFilesystem(void) //johnfitz -- modified based on topaz's tutorial
{
registered.inscribe();
cmdline.inscribe();
command::add("path", COM_Path_f);
command::add("game", COM_Game_f); //johnfitz
auto i = common::check_param("-basedir");
if (i.has_value() && i.value() < com_argc - 1) {
q_strlcpy(com_basedir, com_argv[i.value() + 1], sizeof(com_basedir));
}
else {
q_strlcpy(com_basedir, host_parms->basedir, sizeof(com_basedir));
}
const auto j = strlen(com_basedir);
if (j < 1) Sys_Error("Bad argument to -basedir");
if ((com_basedir[j - 1] == '\\') || (com_basedir[j - 1] == '/')) {
com_basedir[j - 1] = 0;
}
// start up with GAMENAME by default (id1)
COM_AddGameDirectory(com_basedir, GAMENAME);
/* this is the end of our base searchpath:
* any set gamedirs, such as those from -game command line
* arguments or by the 'game' console command will be freed
* up to here upon a new game command. */
com_base_searchpaths = com_searchpaths;
// add mission pack requests (only one should be specified)
if (common::check_param("-rogue").has_value()) {
COM_AddGameDirectory(com_basedir, "rogue");
}
if (common::check_param("-hipnotic").has_value()) {
COM_AddGameDirectory(com_basedir, "hipnotic");
}
if (common::check_param("-quoth").has_value()) {
COM_AddGameDirectory(com_basedir, "quoth");
}
i = common::check_param("-game");
if (i.has_value() && i.value() < com_argc - 1) {
const char *p = com_argv[i.value() + 1];
if (!*p || !strcmp(p, ".") || strstr(p, "..") || strstr(p, "/") || strstr(p, "\\") || strstr(p, ":")) {
Sys_Error("gamedir should be a single directory name, not a path\n");
}
com_modified = true;
// don't load mission packs twice
if (common::check_param("-rogue").has_value() && !q_strcasecmp(p, "rogue")) {
p = nullptr;
}
if (p && common::check_param("-hipnotic").has_value() && !q_strcasecmp(p, "hipnotic")) {
p = nullptr;
}
if (p && common::check_param("-quoth").has_value() && !q_strcasecmp(p, "quoth")) {
p = nullptr;
}
if (p != nullptr) {
COM_AddGameDirectory(com_basedir, p);
// QuakeSpasm extension: treat '-game missionpack' as '-missionpack'
if (!q_strcasecmp(p, "rogue")) {
rogue = true;
standard_quake = false;
}
if (!q_strcasecmp(p, "hipnotic") || !q_strcasecmp(p, "quoth")) {
hipnotic = true;
standard_quake = false;
}
}
}
COM_CheckRegistered();
}
/* The following FS_*() stdio replacements are necessary if one is
* to perform non-sequential reads on files reopened on pak files
* because we need the bookkeeping about file start/end positions.
* Allocating and filling in the fshandle_t structure is the users'
* responsibility when the file is initially opened. */
size_t FS_fread(void *ptr, size_t size, size_t nmemb, fshandle_t *fh) {
long byte_size;
long bytes_read;
size_t nmemb_read;
if (!fh) {
errno = EBADF;
return 0;
}
if (!ptr) {
errno = EFAULT;
return 0;
}
if (!size || !nmemb) {
/* no error, just zero bytes wanted */
errno = 0;
return 0;
}
byte_size = nmemb * size;
if (byte_size > fh->length - fh->pos) /* just read to end */
byte_size = fh->length - fh->pos;
bytes_read = fread(ptr, 1, byte_size, fh->file);
fh->pos += bytes_read;
/* fread() must return the number of elements read,
* not the total number of bytes. */
nmemb_read = bytes_read / size;
/* even if the last member is only read partially
* it is counted as a whole in the return value. */
if (bytes_read % size)
nmemb_read++;
return nmemb_read;
}
int FS_fseek(fshandle_t *fh, long offset, int whence) {
/* I don't care about 64 bit off_t or fseeko() here.
* the quake/hexen2 file system is 32 bits, anyway. */
int ret;
if (!fh) {
errno = EBADF;
return -1;
}
/* the relative file position shouldn't be smaller
* than zero or bigger than the filesize. */
switch (whence) {
case SEEK_SET:
break;
case SEEK_CUR:
offset += fh->pos;
break;
case SEEK_END:
offset = fh->length + offset;
break;
default:
errno = EINVAL;
return -1;
}
if (offset < 0) {
errno = EINVAL;
return -1;
}
if (offset > fh->length) /* just seek to end */
offset = fh->length;
ret = fseek(fh->file, fh->start + offset, SEEK_SET);
if (ret < 0)
return ret;
fh->pos = offset;
return 0;
}
int FS_fclose(fshandle_t *fh) {
if (!fh) {
errno = EBADF;
return -1;
}
return fclose(fh->file);
}
long FS_ftell(fshandle_t *fh) {
if (!fh) {
errno = EBADF;
return -1;
}
return fh->pos;
}
void FS_rewind(fshandle_t *fh) {
if (!fh) return;
clearerr(fh->file);
fseek(fh->file, fh->start, SEEK_SET);
fh->pos = 0;
}
int FS_feof(fshandle_t *fh) {
if (!fh) {
errno = EBADF;
return -1;
}
if (fh->pos >= fh->length)
return -1;
return 0;
}
int FS_ferror(fshandle_t *fh) {
if (!fh) {
errno = EBADF;
return -1;
}
return ferror(fh->file);
}
int FS_fgetc(fshandle_t *fh) {
if (!fh) {
errno = EBADF;
return EOF;
}
if (fh->pos >= fh->length)
return EOF;
fh->pos += 1;
return fgetc(fh->file);
}
char *FS_fgets(char *s, int size, fshandle_t *fh) {
char *ret;
if (FS_feof(fh))
return NULL;
if (size > (fh->length - fh->pos) + 1)
size = (fh->length - fh->pos) + 1;
ret = fgets(s, size, fh->file);
fh->pos = ftell(fh->file) - fh->start;
return ret;
}
long FS_filelength(fshandle_t *fh) {
if (!fh) {
errno = EBADF;
return -1;
}
return fh->length;
}
/*
============================================================================
LOCALIZATION
============================================================================
*/
typedef struct {
char *key;
char *value;
} locentry_t;
typedef struct {
int numentries;
int maxnumentries;
int numindices;
unsigned *indices;
locentry_t *entries;
char *text;
} localization_t;
static localization_t localization;
/*
================
COM_HashString
Computes the FNV-1a hash of string str
================
*/
unsigned COM_HashString(const char *str) {
unsigned hash = 0x811c9dc5u;
while (*str) {
hash ^= *str++;
hash *= 0x01000193u;
}
return hash;
}
static size_t mz_zip_file_read_func(void *opaque, mz_uint64 ofs, void *buf, size_t n) {
if (SDL_RWseek((SDL_RWops*)opaque, (Sint64)ofs, RW_SEEK_SET) < 0)
return 0;
#ifdef USE_SDL2
return SDL_RWread((SDL_RWops*)opaque, buf, 1, n);
#else
else {
int r = SDL_RWread((SDL_RWops*)opaque, buf, 1, n);
return (r < 0) ? 0 : r;
}
#endif
}
#ifndef USE_SDL2 /* no SDL_RWsize in SDL-1.2 */
static Sint32 SDLCALL SDL_RWsize(SDL_RWops *rw) {
Sint32 pos, size;
if ((pos = SDL_RWtell(rw)) < 0) return -1;
size = SDL_RWseek(rw, 0, RW_SEEK_END);
SDL_RWseek(rw, pos, RW_SEEK_SET);
return size;
}
#endif
/*
================
LOC_LoadFile
================
*/
void LOC_LoadFile(const char *file) {
char path[1024];
int i, lineno;
char *cursor;
SDL_RWops *rw = NULL;
Sint64 sz;
mz_zip_archive archive;
size_t size = 0;
// clear existing data
if (localization.text) {
free(localization.text);
localization.text = NULL;
}
localization.numentries = 0;
localization.numindices = 0;
if (!file || !*file)
return;
console::info("\nLanguage initialization\n");
memset(&archive, 0, sizeof(archive));
q_snprintf(path, sizeof(path), "%s/%s", com_basedir, file);
rw = SDL_RWFromFile(path, "rb");
#if defined(DO_USERDIRS)
if (!rw) {
q_snprintf(path, sizeof(path), "%s/%s", host_parms->userdir, file);
rw = SDL_RWFromFile(path, "rb");
}
#endif
if (!rw) {
q_snprintf(path, sizeof(path), "%s/QuakeEX.kpf", com_basedir);
rw = SDL_RWFromFile(path, "rb");
#if defined(DO_USERDIRS)
if (!rw) {
q_snprintf(path, sizeof(path), "%s/QuakeEX.kpf", host_parms->userdir);
rw = SDL_RWFromFile(path, "rb");
}
#endif
if (!rw) goto fail;
sz = SDL_RWsize(rw);
if (sz <= 0) goto fail;
archive.m_pRead = mz_zip_file_read_func;
archive.m_pIO_opaque = rw;
if (!mz_zip_reader_init(&archive, sz, 0)) goto fail;
localization.text = (char *) mz_zip_reader_extract_file_to_heap(&archive, file, &size, 0);
if (!localization.text) goto fail;
mz_zip_reader_end(&archive);
SDL_RWclose(rw);
localization.text = (char *) realloc(localization.text, size + 1);
localization.text[size] = 0;
} else {
sz = SDL_RWsize(rw);
if (sz <= 0) goto fail;
localization.text = (char *) calloc(1, sz + 1);
if (!localization.text) {
fail:
mz_zip_reader_end(&archive);
if (rw)
SDL_RWclose(rw);
console::info("Couldn't load '%s'\nfrom '%s'\n", file, com_basedir);
return;
}
SDL_RWread(rw, localization.text, 1, sz);
SDL_RWclose(rw);
}
cursor = localization.text;
// skip BOM
if ((unsigned char) (cursor[0]) == 0xEF && (unsigned char) (cursor[1]) == 0xBB && (unsigned char) (cursor[2]) ==
0xBF)
cursor += 3;
lineno = 0;
while (*cursor) {
char *line, *equals;
lineno++;
// skip leading whitespace
while (q_isblank(*cursor))
++cursor;
line = cursor;
equals = NULL;
// find line end and first equals sign, if any
while (*cursor && *cursor != '\n') {
if (*cursor == '=' && !equals)
equals = cursor;
cursor++;
}
if (line[0] == '/') {
if (line[1] != '/')
console::debug("LOC_LoadFile: malformed comment on line %d\n", lineno);
} else if (equals) {
char *key_end = equals;
bool leading_quote;
bool trailing_quote;
locentry_t *entry;
char *value_src;
char *value_dst;
char *value;
// trim whitespace before equals sign
while (key_end != line && q_isspace(key_end[-1]))
key_end--;
*key_end = 0;
value = equals + 1;
// skip whitespace after equals sign
while (value != cursor && q_isspace(*value))
value++;
leading_quote = (*value == '\"');
trailing_quote = false;
value += leading_quote;
// transform escape sequences in-place
value_src = value;
value_dst = value;
while (value_src != cursor) {
if (*value_src == '\\' && value_src + 1 != cursor) {
char c = value_src[1];
value_src += 2;
switch (c) {
case 'n': *value_dst++ = '\n';
break;
case 't': *value_dst++ = '\t';
break;
case 'v': *value_dst++ = '\v';
break;
case 'b': *value_dst++ = '\b';
break;
case 'f': *value_dst++ = '\f';
break;
case '"':
case '\'':
*value_dst++ = c;
break;
default:
console::info("LOC_LoadFile: unrecognized escape sequence \\%c on line %d\n", c, lineno);
*value_dst++ = c;
break;
}
continue;
}
if (*value_src == '\"') {
trailing_quote = true;
*value_dst = 0;
break;
}
*value_dst++ = *value_src++;
}
// if not a quoted string, trim trailing whitespace
if (!trailing_quote) {
while (value_dst != value && q_isblank(value_dst[-1])) {
*value_dst = 0;
value_dst--;
}
}
if (localization.numentries == localization.maxnumentries) {
// grow by 50%
localization.maxnumentries += localization.maxnumentries >> 1;
localization.maxnumentries = std::max(localization.maxnumentries, 32);
localization.entries = (locentry_t *) realloc(localization.entries,
sizeof(*localization.entries) * localization.
maxnumentries);
}
entry = &localization.entries[localization.numentries++];
entry->key = line;
entry->value = value;
}
if (*cursor)
*cursor++ = 0; // terminate line and advance to next
}
// hash all entries
localization.numindices = localization.numentries * 2; // 50% load factor
if (localization.numindices == 0) {
console::info("No localized strings in file '%s'\n", file);
return;
}
localization.indices = (unsigned *) realloc(localization.indices,
localization.numindices * sizeof(*localization.indices));
memset(localization.indices, 0, localization.numindices * sizeof(*localization.indices));
for (i = 0; i < localization.numentries; i++) {
locentry_t *entry = &localization.entries[i];
unsigned pos = COM_HashString(entry->key) % localization.numindices, end = pos;
for (;;) {
if (!localization.indices[pos]) {
localization.indices[pos] = i + 1;
break;
}
++pos;
if (pos == localization.numindices)
pos = 0;
if (pos == end)
Sys_Error("LOC_LoadFile failed");
}
}
console::info("Loaded %d strings from '%s'\n", localization.numentries, file);
}
/*
================
LOC_Init
================
*/
void LOC_Init(void) {
LOC_LoadFile("localization/loc_english.txt");
}
/*
================
LOC_Shutdown
================
*/
void LOC_Shutdown(void) {
free(localization.indices);
free(localization.entries);
free(localization.text);
}
/*
================
LOC_GetRawString
Returns localized string if available, or NULL otherwise
================
*/
const char *LOC_GetRawString(const char *key) {
unsigned pos, end;
if (!localization.numindices || !key || !*key || *key != '$')
return NULL;
key++;
pos = COM_HashString(key) % localization.numindices;
end = pos;
do {
unsigned idx = localization.indices[pos];
locentry_t *entry;
if (!idx)
return NULL;
entry = &localization.entries[idx - 1];
if (!std::strcmp(entry->key, key))
return entry->value;
++pos;
if (pos == localization.numindices)
pos = 0;
} while (pos != end);
return NULL;
}
/*
================
LOC_GetString
Returns localized string if available, or input string otherwise
================
*/
const char *LOC_GetString(const char *key) {
const char *value = LOC_GetRawString(key);
return value ? value : key;
}
/*
================
LOC_ParseArg
Returns argument index (>= 0) and advances the string if it starts with a placeholder ({} or {N}),
otherwise returns a negative value and leaves the pointer unchanged
================
*/
static int LOC_ParseArg(const char **pstr) {
int arg;
const char *str = *pstr;
// opening brace
if (*str != '{')
return -1;
++str;
// optional index, defaulting to 0
arg = 0;
while (q_isdigit(*str))
arg = arg * 10 + *str++ - '0';
// closing brace
if (*str != '}')
return -1;
*pstr = ++str;
return arg;
}
/*
================
LOC_HasPlaceholders
================
*/
bool LOC_HasPlaceholders(const char *str) {
if (!localization.numindices)
return false;
while (*str) {
if (LOC_ParseArg(&str) >= 0)
return true;
str++;
}
return false;
}
/*
================
LOC_Format
Replaces placeholders (of the form {} or {N}) with the corresponding arguments
Returns number of written chars, excluding the NUL terminator
If len > 0, output is always NUL-terminated
================
*/
size_t LOC_Format(const char *format, const char * (*getarg_fn)(int idx, void *userdata), void *userdata, char *out,
size_t len) {
size_t written = 0;
int numargs = 0;
if (!len) {
console::debug("LOC_Format: no output space\n");
return 0;
}
--len; // reserve space for the terminator
while (*format && written < len) {
const char *insert;
size_t space_left;
size_t insert_len;
int argindex = LOC_ParseArg(&format);
if (argindex < 0) {
out[written++] = *format++;
continue;
}
insert = getarg_fn(argindex, userdata);
space_left = len - written;
insert_len = std::strlen(insert);
if (insert_len > space_left) {
console::debug("LOC_Format: overflow at argument #%d\n", numargs);
insert_len = space_left;
}
std::memcpy(out + written, insert, insert_len);
written += insert_len;
}
if (*format)
console::debug("LOC_Format: overflow\n");
out[written] = 0;
return written;
}
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