raze-gles/source/blood/src/barf.cpp
2020-04-12 08:30:40 +02:00

920 lines
24 KiB
C++

//-------------------------------------------------------------------------
/*
Copyright (C) 2010-2019 EDuke32 developers and contributors
Copyright (C) 2019 sirlemonhead, Nuke.YKT
This file is part of NBlood.
NBlood is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
//-------------------------------------------------------------------------
#include "ns.h" // Must come before everything else!
#include "compat.h"
#include "common_game.h"
#include "resource.h"
#include "misc.h"
#include "globals.h"
#include "sound.h"
#include "filesystem.h"
BEGIN_BLD_NS
// I don't think we still need these.
#define DICT_LOAD 0
#define DICT_LOCK 0
static Resource gBarfRes;
#define kMaxCmdLineDefines 5
#define kMaxDefines 1000
#define kMaxParseLevels 5
static int nCmdDefines = 0;
static int nDefines = 0;
static int gParseLevel = 0;
int dword_44CE0[kMaxParseLevels] = { 0, 0, 0, 0, 0 };
// FIXME
unsigned int nBytes = 0;
char buffer[1024];
int scriptValue = 0;
char scriptBuffer[256];
struct define_t
{
FString _text;
int _value;
};
define_t gCmdDefines[kMaxCmdLineDefines];
void addMemoryResource(char *fileName, char flags, int ID);
struct tag_t {
const char *_value;
uint8_t _index;
};
enum eTags
{
kTag0,
kTagEnd,
kTagString,
kTagConstant,
kTag4, // string constant?
kTagComma,
kTagSemiColon,
kTagColon,
kTagEquals,
kTagHash,
kTagComment,
kTagInclude,
kTagResource,
kTagAs,
kTagPreload,
kTagPrelock,
kTagData,
kTagLoad,
kTagEmit,
kTagIfDef,
kTagEndif,
kTagElse
};
tag_t tags[] =
{
{ ",", kTagComma },
{ ";", kTagSemiColon },
{ ":", kTagColon },
{ "=", kTagEquals },
{ "#", kTagHash },
{ "//", kTagComment },
{ "INCLUDE", kTagInclude },
{ "RESOURCE", kTagResource },
{ "AS", kTagAs },
{ "PRELOAD", kTagPreload },
{ "PRELOCK", kTagPrelock },
{ "DATA", kTagData },
{ "LOAD", kTagLoad },
{ "EMIT", kTagEmit },
{ "%ifdef", kTagIfDef },
{ "%endif", kTagEndif },
{ "%else", kTagElse }
};
const int kTagCount = sizeof(tags) / sizeof(tag_t);
int qsort_compar(const void *a, const void *b)
{
return Bstrcasecmp((const char*)a, (const char*)b);
}
void SortTags()
{
qsort(tags, kTagCount, sizeof(tag_t), qsort_compar);
}
void AddCmdDefine(char *text, int value)
{
dassert(nCmdDefines < kMaxCmdLineDefines);
gCmdDefines[nCmdDefines]._text = text;
gCmdDefines[nCmdDefines]._value = value;
nCmdDefines++;
}
// 174 bytes
struct RFS
{
private:
TArray<char> buffer;
char *_ptr; // [0]
char _curChar; // [4]
char *_pUnknown2; // [5] - some sort of pointer into _ptr?
char *_pStartLine; // [9]
char *_pEnd; // [13]
char *_pMark; // [17]
char _unknown6; // [21]
int _unknown7; // [22]
int _curLine; // [26]
char _fileName[BMAX_PATH]; // [30]
public:
int Open(int lumpnum);
void Close();
void Increment();
void SkipBeyondValue(char value);
uint8_t GetNextTag();
void ScriptError(const char *message);
void SetMark();
void UnsetMark();
};
int RFS::Open(int lumpnum)
{
auto hFile = fileSystem.OpenFileReader(lumpnum);
if (!hFile.isOpen()) {
Printf("BARF: Error opening file %d", lumpnum);
return 1;
}
int fileSize = hFile.GetLength();
buffer.Resize(fileSize);
_ptr = buffer.Data();
if (_ptr == NULL) {
Printf("BARF: Not enough memory to read %d", lumpnum);
return 1;
}
hFile.Read(_ptr, fileSize);
_curLine = 0;
_pUnknown2 = _ptr;
_curChar = '\n';
_pEnd = &_ptr[fileSize - 1];
return 0;
}
void RFS::Close()
{
}
void RFS::Increment()
{
if (_curChar == '\n') {
_curLine++;
_pStartLine = _pUnknown2;
}
if (_pUnknown2 >= _pEnd) {
_curChar = 0;
}
else {
_curChar = *_pUnknown2; // grabs the next char
_pUnknown2++; // increment pointer into char data
}
}
void RFS::SkipBeyondValue(char nVal)
{
while (_curChar && _curChar != nVal) {
Increment();
}
}
void RFS::SetMark()
{
_pMark = _pUnknown2;
_unknown6 = _curChar;
_unknown7 = _curLine;
}
// inverse of the above function
void RFS::UnsetMark()
{
_pUnknown2 = _pMark;
_curChar = _unknown6;
_curLine = _unknown7;
}
void RFS::ScriptError(const char *message)
{
// TODO
TArray<char> msg;
char *p = _pStartLine;
while (*p != '\n')
{
if (isprint(*p))
msg.Push(*p);
else
msg.Push(' ');
p++;
}
msg.Push('\n');
p = _pStartLine;
while (p < _pMark)
{
msg.Push(' ');
p++;
}
msg.Push('^');
msg.Push(0);
Printf("Error in %s line %d: %s\n\n%s", _fileName, _curLine, message, msg.Data());
}
uint8_t RFS::GetNextTag()
{
// skip any space characters
do {
Increment();
} while (isspace(_curChar));
if (_curChar == '\0') {
return kTagEnd;
}
SetMark();
// Path A
if (_curChar == '"')
{
Increment();
int i = 0;
// section 1
while (1) {
if (_curChar == '\0' || _curChar == '"') {
scriptBuffer[i] = '\0';
return kTagString;
}
if (i == 256) {
ScriptError("String exceeds maximum string length");
break;
}
scriptBuffer[i] = _curChar;
i++;
Increment();
}
// section 2
while (1)
{
if (_curChar == '\0' || _curChar == '"') {
return kTag0;
}
Increment();
}
}
else
{
scriptValue = 0;
bool isNegative = false; // or 'isSigned' ?
// is it a negative number?
if (_curChar == '-')
{
Increment();
isNegative = true;
if (!isdigit(_curChar)) {
UnsetMark();
}
}
if (isdigit(_curChar))
{
// left path
if (_curChar == '0')
{
Increment();
// handle a hex value
if (toupper(_curChar) == 'X')
{
// orange loop
while (1)
{
Increment();
if (!isxdigit(_curChar)) { // isxdigit() checks for a hex value
break;
}
// hex version of atoi?
scriptValue *= 16;
if (!isdigit(_curChar)) {
scriptValue += toupper(_curChar) - 55;
}
else {
scriptValue += _curChar - '0';
}
SetMark();
}
UnsetMark();
if (isNegative) {
scriptValue = -scriptValue;
}
return kTagConstant;
}
UnsetMark();
}
// the loop
while (isdigit(_curChar))
{
// atoi implementation
scriptValue = scriptValue * 10 + _curChar - '0';
SetMark();
Increment();
}
UnsetMark();
if (isNegative) {
scriptValue = -scriptValue;
}
return kTagConstant;
}
else
{
// BLUEISH PATH
int ebp = 0; // v11
int i = 0;
// blue loop #1
while (1)
{
scriptBuffer[ebp] = _curChar;
ebp++;
int eax = -1;
// blue loop #2
for (i = 0; i < kTagCount; i++)
{
//if (eax >= 0) {
if (eax == 0) {
break;
}
// eax = strnicmp(tags[i]._value, scriptBuffer, ebp);
eax = Bstrncasecmp(scriptBuffer, tags[i]._value, ebp);
//if (eax >= 0) {
if (eax == 0) {
break;
}
}
if (eax > 0 || i == kTagCount) {
break;
}
if (eax == 0 && strlen(tags[i]._value) == ebp)
{
scriptBuffer[ebp] = 0;
return tags[i]._index;
}
Increment();
}
UnsetMark();
i = 0;
while (isalnum(_curChar))
{
scriptBuffer[i] = _curChar;
SetMark();
i++;
Increment();
}
UnsetMark();
scriptBuffer[i] = 0;
return kTag4;
}
}
// qAssert(1==0); // TODO - what to return here
}
void ParseScript(int lumpnum)
{
char text[256];
char char256_1[256];
char char256_2[256];
char fileName[BMAX_PATH];
char inp[BMAX_PATH];
//char zScriptDirectory[BMAX_PATH], zTemp1[BMAX_PATH], zTemp2[BMAX_PATH];
//SplitPath(scriptFileName, zScriptDirectory, zTemp1, zTemp2);
RFS rfs;
// AddExtension(name, ".RFS");
if (rfs.Open(lumpnum))
{
return;
}
gParseLevel = 0;
dword_44CE0[0] = 0;
bool parsing = true;
while (parsing)
{
// START LOOP. to be fixed later
START:
uint8_t tag = rfs.GetNextTag();
switch (tag)
{
default:
{
break;
}
case kTagEnd:
{
parsing = false;
break;
}
case kTagComment:
{
// skip to next line
rfs.SkipBeyondValue('\n');
break;
}
case kTagEmit: // minty/light green colour
{
tag = rfs.GetNextTag();
if (tag != kTag4)
{
rfs.ScriptError("Symbol name expected");
rfs.SkipBeyondValue(';');
break;
}
else
{
strcpy(char256_2, scriptBuffer);
tag = rfs.GetNextTag();
if (tag != kTagEquals)
{
rfs.ScriptError("Missing '='");
rfs.SkipBeyondValue(';');
break;
}
tag = rfs.GetNextTag();
if (tag != kTagConstant)
{
rfs.ScriptError("Constant expected");
rfs.SkipBeyondValue(';');
break;
}
else
{
//AddDefine(char256_2, scriptValue);
rfs.SkipBeyondValue('\n');
}
}
}
case kTagResource: // really light blue..
{
if (kTagString != rfs.GetNextTag()) {
rfs.ScriptError("String constant exected");
rfs.SkipBeyondValue('\n');
break;
}
strcpy(inp, scriptBuffer);
char nFlags = 0;
int ID = 0;
bool isDefine = false;
tag = rfs.GetNextTag();
if (tag == kTagAs)
{
tag = rfs.GetNextTag();
if (tag == kTag4)
{
strcpy(text, scriptBuffer);
if (rfs.GetNextTag() != kTagEquals)
{
rfs.ScriptError("Missing '='");
rfs.SkipBeyondValue(';');
break;
}
isDefine = true;
tag = rfs.GetNextTag();
}
if (tag != kTagConstant)
{
rfs.ScriptError("Constant expected");
rfs.SkipBeyondValue(';');
break;
}
if (isDefine) {
//AddDefine(text, scriptValue);
}
ID = scriptValue;
tag = rfs.GetNextTag();
}
//if (!bNoEncrypt) {
// nFlags |= kResFlagIsEncrypted;
//}
while (tag == kTagComma)
{
tag = rfs.GetNextTag();
if (tag == kTagPreload) {
nFlags |= DICT_LOAD;
}
else if (tag == kTagPrelock) {
nFlags |= DICT_LOCK;
}
else {
rfs.ScriptError("Unrecognized flag");
rfs.SkipBeyondValue(';');
goto START; // FIXME
}
tag = rfs.GetNextTag();
}
if (tag != kTagSemiColon)
{
rfs.ScriptError("';' expected");
rfs.SkipBeyondValue(';');
break;
}
if (dword_44CE0[gParseLevel] == 0)
{
// In the RFS files I have seen the outermost directory is not part of what goes into the file system.
auto inp1 = strchr(inp, '\\');
if (!inp1 || !fileSystem.CreatePathlessCopy(inp1 + 1, ID, nFlags))
{
// I'll activate this when I find evidence that it is needed. Otherwise the risk of picking up unwanted data is too high.
//fileSystem.CreatePathlessCopy(inp, ID, nFlags);
}
}
break;
}
case kTagIfDef: // purplish colour
{
tag = rfs.GetNextTag();
if (tag != kTag4)
{
rfs.ScriptError("Parameter error in ifdef");
rfs.SkipBeyondValue('\n');
break;
}
else
{
rfs.SetMark();
strcpy(char256_1, scriptBuffer);
bool bGotDefine = false;
// check if this was defined via command prompt arguments
for (int i = 0; i < nCmdDefines; i++)
{
if (Bstrcasecmp(gCmdDefines[i]._text, char256_1) == 0) { // string is equivalent
bGotDefine = true;
break;
}
}
// loc_11FC3:
gParseLevel++;
dassert(gParseLevel < kMaxParseLevels);
if (bGotDefine) {
dword_44CE0[gParseLevel] = dword_44CE0[gParseLevel - 1];
}
else {
dword_44CE0[gParseLevel] = 1;
}
}
break;
}
case kTagElse: // pinky colour
{
if (gParseLevel)
{
// loc_12066:
if (dword_44CE0[gParseLevel - 1] == 0) {
if (dword_44CE0[gParseLevel] == 0) {
dword_44CE0[gParseLevel] = 1;
}
rfs.SkipBeyondValue('\n');
break;
}
}
else {
rfs.ScriptError("Unexpected else");
rfs.SkipBeyondValue('\n');
break;
}
break;
}
case kTagEndif: // poo coloured
{
if (gParseLevel) {
gParseLevel--;
rfs.SkipBeyondValue('\n');
break;
}
else
{
rfs.ScriptError("Unexpected Endif");
rfs.SkipBeyondValue('\n');
break;
}
}
case kTagHash: // gold colour
{
tag = rfs.GetNextTag();
if (tag == kTagInclude)
{
tag = rfs.GetNextTag();
if (tag != kTagString)
{
rfs.ScriptError("String constant exected");
// why no SkipBeyondValue?
break;
}
else
{
// too dangerous if we want to cumulatively collect all RFS files
//fileSystem.Rehash();
//ParseScript(scriptBuffer);
}
}
break;
}
case kTagData: // eg: data "AMB1.SFX" as 1: 80, 0x10000, 0x0, 1, -1, "amb1";
{
// green coloured section
if (rfs.GetNextTag() != kTagString) {
rfs.ScriptError("String constant expected");
rfs.SkipBeyondValue(';');
break;
}
// eg strcpy(fileName, "AMB1.SFX");
strcpy(fileName, scriptBuffer);
char nFlags = 0;
int ID = 0;
bool isDefine = false;
tag = rfs.GetNextTag();
// process an ID section
if (tag == kTagAs)
{
tag = rfs.GetNextTag();
if (tag == kTag4)
{
strcpy(fileName, scriptBuffer);
tag = rfs.GetNextTag();
if (tag != kTagEquals) {
rfs.ScriptError("Missing '='");
rfs.SkipBeyondValue(';');
break;
}
isDefine = true;
tag = rfs.GetNextTag();
}
if (tag != kTagConstant)
{
rfs.ScriptError("Constant Expected");
rfs.SkipBeyondValue(';');
break;
}
else {
//if (isDefine) {
// AddDefine(fileName, scriptValue);
//}
ID = scriptValue;
tag = rfs.GetNextTag();
}
}
if (tag == kTagComma)
{
// process all sections on this line that are comma separated
while (1)
{
tag = rfs.GetNextTag();
if (tag == kTagPreload)
{
nFlags |= DICT_LOAD;
tag = rfs.GetNextTag();
if (tag == kTagComma) {
continue;
}
}
else if (tag == kTagPrelock)
{
nFlags |= DICT_LOCK;
tag = rfs.GetNextTag();
if (tag == kTagComma) {
continue;
}
}
else
{
rfs.ScriptError("Unrecognized flag");
rfs.SkipBeyondValue(';');
goto START; // FIXME
}
}
}
// loc_12471:
if (tag != kTagColon) // marked orange in IDA
{
while (1)
{
if (tag == kTagPreload)
{
nFlags |= DICT_LOAD;
tag = rfs.GetNextTag();
if (tag == kTagColon) {
break;
}
}
else if (tag == kTagPrelock)
{
nFlags |= DICT_LOCK;
tag = rfs.GetNextTag();
if (tag == kTagColon) {
break;
}
}
else {
rfs.ScriptError("':' expected");
rfs.SkipBeyondValue(';');
goto START; // FIXME
}
}
}
nBytes = 0;
// yellow loop
while (1)
{
tag = rfs.GetNextTag();
switch (tag)
{
case kTagString:
{
memcpy(&buffer[nBytes], scriptBuffer, strlen(scriptBuffer) + 1);
nBytes += strlen(scriptBuffer) + 1;
break;
}
case kTagConstant:
{
memcpy(&buffer[nBytes], &scriptValue, sizeof(scriptValue));
nBytes += sizeof(scriptValue);
break;
}
default:
{
rfs.ScriptError("Constant expected");
rfs.SkipBeyondValue(';');
goto START; // FIXME
}
}
tag = rfs.GetNextTag();
if (tag != kTagComma) {
break;
}
}
if (tag != kTagSemiColon) {
rfs.ScriptError("Semicolon expected");
rfs.SkipBeyondValue(';');
break;
}
else
{
if (dword_44CE0[gParseLevel] == 0) {
addMemoryResource(fileName, nFlags, ID);
}
}
break;
}
}
}
//CreateHeader();
rfs.Close();
}
void addMemoryResource(char* filePath, char flags, int ID)
{
char zDirectory[BMAX_PATH];
char zFilename[BMAX_PATH];
char zType[BMAX_PATH];
SplitPath(filePath, zDirectory, zFilename, zType);
fileSystem.AddFromBuffer(zFilename, zType, buffer, nBytes, ID, flags);
}
void ReadAllRFS()
{
bool found = false;
auto numf = fileSystem.GetNumEntries();
for (int i = 0; i < numf; i++)
{
auto rl = fileSystem.GetResourceType(i);
if (!stricmp(rl, "RFS"))
{
ParseScript(i);
found = true;
}
}
if (found) fileSystem.InitHashChains();
}
END_BLD_NS