/* Copyright (C) 2003-2013 Runtime Revolution Ltd.

This file is part of LiveCode.

LiveCode is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License v3 as published by the Free

Software Foundation.

LiveCode 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 LiveCode. If not see <http://www.gnu.org/licenses/>. */

#include "prefix.h"

#include "globdefs.h"

#include "filedefs.h"

#include "objdefs.h"

#include "parsedef.h"

#include "mcio.h"

//#include "execpt.h"

#include "dispatch.h"

#include "stack.h"

#include "tooltip.h"

#include "card.h"

#include "field.h"

#include "button.h"

#include "image.h"

#include "aclip.h"

#include "vclip.h"

#include "stacklst.h"

#include "mcerror.h"

#include "hc.h"

#include "util.h"

#include "param.h"

#include "debug.h"

#include "statemnt.h"

#include "funcs.h"

#include "magnify.h"

#include "sellst.h"

#include "undolst.h"

#include "styledtext.h"

#include "external.h"

#include "osspec.h"

#include "flst.h"

#include "globals.h"

#include "license.h"

#include "mode.h"

#include "redraw.h"

#include "printer.h"

#include "font.h"

#include "stacksecurity.h"

#include "scriptpt.h"

#include "exec.h"

#include "exec-interface.h"

#include "graphics_util.h"

#define UNLICENSED_TIME 6.0

#ifdef _DEBUG_MALLOC_INC

#define LICENSED_TIME 1.0

#else

#define LICENSED_TIME 3.0

#endif

MCImage *MCDispatch::imagecache;

#define VERSION_OFFSET 11

#define HEADERSIZE 255

static char header[HEADERSIZE] = "#!/bin/sh\n# MetaCard 2.4 stack\n# The following is not ASCII text,\n# so now would be a good time to q out of more\f\nexec mc $0 \"$@\"\n";

#define NEWHEADERSIZE 8

#define HEADERPREFIXSIZE 4

static const char *newheader = "REVO2700";

static const char *newheader5500 = "REVO5500";

static const char *newheader7000 = "REVO7000";

#define MAX_STACKFILE_VERSION 7000

////////////////////////////////////////////////////////////////////////////////

MCPropertyInfo MCDispatch::kProperties[] =

{

DEFINE_RO_OBJ_PROPERTY(P_TEXT_FONT, String, MCDispatch, DefaultTextFont)

DEFINE_RO_OBJ_PROPERTY(P_TEXT_SIZE, UInt32, MCDispatch, DefaultTextSize)

DEFINE_RO_OBJ_ENUM_PROPERTY(P_TEXT_ALIGN, InterfaceTextAlign, MCDispatch, DefaultTextAlign)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_TEXT_STYLE, InterfaceTextStyle, MCDispatch, DefaultTextStyle)

DEFINE_RO_OBJ_PROPERTY(P_TEXT_HEIGHT, UInt32, MCDispatch, DefaultTextHeight)

DEFINE_RO_OBJ_PROPERTY(P_FORE_PIXEL, UInt32, MCDispatch, DefaultForePixel)

DEFINE_RO_OBJ_PROPERTY(P_HILITE_PIXEL, UInt32, MCDispatch, DefaultForePixel)

DEFINE_RO_OBJ_PROPERTY(P_BORDER_PIXEL, UInt32, MCDispatch, DefaultForePixel)

DEFINE_RO_OBJ_PROPERTY(P_BOTTOM_PIXEL, UInt32, MCDispatch, DefaultForePixel)

DEFINE_RO_OBJ_PROPERTY(P_SHADOW_PIXEL, UInt32, MCDispatch, DefaultForePixel)

DEFINE_RO_OBJ_PROPERTY(P_FOCUS_PIXEL, UInt32, MCDispatch, DefaultForePixel)

DEFINE_RO_OBJ_PROPERTY(P_BACK_PIXEL, UInt32, MCDispatch, DefaultBackPixel)

DEFINE_RO_OBJ_PROPERTY(P_TOP_PIXEL, UInt32, MCDispatch, DefaultTopPixel)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_FORE_COLOR, InterfaceNamedColor, MCDispatch, DefaultForeColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_BORDER_COLOR, InterfaceNamedColor, MCDispatch, DefaultForeColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_TOP_COLOR, InterfaceNamedColor, MCDispatch, DefaultForeColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_BOTTOM_COLOR, InterfaceNamedColor, MCDispatch, DefaultForeColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_SHADOW_COLOR, InterfaceNamedColor, MCDispatch, DefaultForeColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_FOCUS_COLOR, InterfaceNamedColor, MCDispatch, DefaultForeColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_BACK_COLOR, InterfaceNamedColor, MCDispatch, DefaultBackColor)

DEFINE_RO_OBJ_CUSTOM_PROPERTY(P_HILITE_COLOR, InterfaceNamedColor, MCDispatch, DefaultBackColor)

DEFINE_RO_OBJ_PROPERTY(P_FORE_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_BACK_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_HILITE_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_BORDER_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_TOP_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_BOTTOM_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_SHADOW_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

DEFINE_RO_OBJ_PROPERTY(P_FOCUS_PATTERN, OptionalUInt32, MCDispatch, DefaultPattern)

};

MCObjectPropertyTable MCDispatch::kPropertyTable =

{

&MCObject::kPropertyTable,

sizeof(kProperties) / sizeof(kProperties[0]),

&kProperties[0],

};

////////////////////////////////////////////////////////////////////////////////

MCDispatch::MCDispatch()

{

license = NULL;

stacks = NULL;

fonts = NULL;

setname_cstring("dispatch");

handling = False;

menu = NULL;

panels = NULL;

startdir = NULL;

enginedir = NULL;

flags = 0;

m_drag_source = false;

m_drag_target = false;

m_drag_end_sent = false;

m_externals = nil;

m_transient_stacks = nil;

}

MCDispatch::~MCDispatch()

{

delete license;

while (stacks != NULL)

{

MCStack *sptr = stacks->prev()->remove(stacks);

delete sptr;

}

while (imagecache != NULL)

{

MCImage *iptr = imagecache->remove(imagecache);

delete iptr;

}

delete fonts;

delete startdir;

delete enginedir;

delete m_externals;

}

bool MCDispatch::isdragsource(void)

{

return m_drag_source;

}

bool MCDispatch::isdragtarget(void)

{

return m_drag_target;

}

#ifdef LEGACY_EXEC

Exec_stat MCDispatch::getprop_legacy(uint4 parid, Properties which, MCExecPoint &ep, Boolean effective)

{

switch (which)

{

#ifdef /* MCDispatch::getprop */ LEGACY_EXEC

case P_BACK_PIXEL:

ep.setint(MCscreen->background_pixel.pixel & 0xFFFFFF);

return ES_NORMAL;

case P_TOP_PIXEL:

ep.setint(MCscreen->white_pixel.pixel & 0xFFFFFF);

return ES_NORMAL;

case P_HILITE_PIXEL:

case P_FORE_PIXEL:

case P_BORDER_PIXEL:

case P_BOTTOM_PIXEL:

case P_SHADOW_PIXEL:

case P_FOCUS_PIXEL:

ep.setint(MCscreen->black_pixel.pixel & 0xFFFFFF);

return ES_NORMAL;

case P_BACK_COLOR:

case P_HILITE_COLOR:

ep.setstaticcstring("white");

return ES_NORMAL;

case P_FORE_COLOR:

case P_BORDER_COLOR:

case P_TOP_COLOR:

case P_BOTTOM_COLOR:

case P_SHADOW_COLOR:

case P_FOCUS_COLOR:

ep.setstaticcstring("black");

return ES_NORMAL;

case P_FORE_PATTERN:

case P_BACK_PATTERN:

case P_HILITE_PATTERN:

case P_BORDER_PATTERN:

case P_TOP_PATTERN:

case P_BOTTOM_PATTERN:

case P_SHADOW_PATTERN:

case P_FOCUS_PATTERN:

ep.clear();

return ES_NORMAL;

case P_TEXT_ALIGN:

ep.setstaticcstring(MCleftstring);

return ES_NORMAL;

case P_TEXT_FONT:

ep.setstaticcstring(DEFAULT_TEXT_FONT);

return ES_NORMAL;

case P_TEXT_HEIGHT:

ep.setint(heightfromsize(DEFAULT_TEXT_SIZE));

return ES_NORMAL;

case P_TEXT_SIZE:

ep.setint(DEFAULT_TEXT_SIZE);

return ES_NORMAL;

case P_TEXT_STYLE:

ep.setstaticcstring(MCplainstring);

return ES_NORMAL;

#endif /* MCDispatch::getprop */

default:

MCeerror->add(EE_OBJECT_GETNOPROP, 0, 0);

return ES_ERROR;

}

}

#endif

#ifdef LEGACY_EXEC

Exec_stat MCDispatch::setprop_legacy(uint4 parid, Properties which, MCExecPoint &ep, Boolean effective)

{

#ifdef /* MCDispatch::setprop */ LEGACY_EXEC

return ES_NORMAL;

#endif /* MCDispatch::setprop */

return ES_NORMAL;

}

#endif

// bogus "cut" call actually checks license

Boolean MCDispatch::cut(Boolean home)

{

if (home)

return True;

return MCnoui || (flags & F_WAS_LICENSED) != 0;

}

//extern Exec_stat MCHandlePlatformMessage(Handler_type htype, const MCString& mess, MCParameter *params);

Exec_stat MCDispatch::handle(Handler_type htype, MCNameRef mess, MCParameter *params, MCObject *pass_from)

{

Exec_stat stat = ES_NOT_HANDLED;

bool t_has_passed;

t_has_passed = false;

if (MCcheckstack && MCU_abs(MCstackbottom - (char *)&stat) > MCrecursionlimit)

{

MCeerror->add(EE_RECURSION_LIMIT, 0, 0);

MCerrorptr = stacks;

return ES_ERROR;

}

// MW-2011-06-30: Move handling of library stacks from MCStack::handle.

if (MCnusing > 0)

{

for (uint32_t i = MCnusing; i > 0 && (stat == ES_PASS || stat == ES_NOT_HANDLED); i -= 1)

{

stat = MCusing[i - 1]->handle(htype, mess, params, nil);

// MW-2011-08-22: [[ Bug 9686 ]] Make sure we exit as soon as the

// message is handled.

if (stat != ES_NOT_HANDLED && stat != ES_PASS)

return stat;

if (stat == ES_PASS)

t_has_passed = true;

}

if (t_has_passed && stat == ES_NOT_HANDLED)

stat = ES_PASS;

}

if ((stat == ES_NOT_HANDLED || stat == ES_PASS) && MCbackscripts != NULL)

{

MCObjectList *optr = MCbackscripts;

do

{

if (!optr->getremoved())

{

stat = optr->getobject()->handle(htype, mess, params, nil);

if (stat != ES_NOT_HANDLED && stat != ES_PASS)

return stat;

if (stat == ES_PASS)

t_has_passed = true;

}

optr = optr->next();

}

while (optr != MCbackscripts);

}

if ((stat == ES_NOT_HANDLED || stat == ES_PASS) && m_externals != nil)

{

Exec_stat oldstat = stat;

stat = m_externals -> Handle(this, htype, mess, params);

// MW-2011-08-22: [[ Bug 9686 ]] Make sure we exit as soon as the

// message is handled.

if (stat != ES_NOT_HANDLED && stat != ES_PASS)

return stat;

if (oldstat == ES_PASS && stat == ES_NOT_HANDLED)

stat = ES_PASS;

}

//#ifdef TARGET_SUBPLATFORM_IPHONE

// extern Exec_stat MCIPhoneHandleMessage(MCNameRef message, MCParameter *params);

// if (stat == ES_NOT_HANDLED || stat == ES_PASS)

// {

// stat = MCIPhoneHandleMessage(mess, params);

//

// if (stat != ES_NOT_HANDLED && stat != ES_PASS)

// return stat;

// }

//#endif

//

//#ifdef _MOBILE

// if (stat == ES_NOT_HANDLED || stat == ES_PASS)

// {

// stat = MCHandlePlatformMessage(htype, MCNameGetOldString(mess), params);

//

// // MW-2011-08-22: [[ Bug 9686 ]] Make sure we exit as soon as the

// // message is handled.

// if (stat != ES_NOT_HANDLED && stat != ES_PASS)

// return stat;

// }

//#endif

if (MCmessagemessages && stat != ES_PASS)

MCtargetptr->sendmessage(htype, mess, False);

if (t_has_passed)

return ES_PASS;

return stat;

}

bool MCDispatch::getmainstacknames(MCListRef& r_list)

{

MCAutoListRef t_list;

if (!MCListCreateMutable('\n', &t_list))

return false;

MCStack *tstk = stacks;

do

{

MCAutoValueRef t_string;

if (!tstk->names(P_SHORT_NAME, &t_string))

return false;

if (!MCListAppend(*t_list, (MCStringRef)*t_string))

return false;

tstk = (MCStack *)tstk->next();

}

while (tstk != stacks);

return MCListCopy(*t_list, r_list);

}

void MCDispatch::appendstack(MCStack *sptr)

{

sptr->appendto(stacks);

// MW-2013-03-20: [[ MainStacksChanged ]]

MCmainstackschanged = True;

}

void MCDispatch::removestack(MCStack *sptr)

{

sptr->remove(stacks);

// MW-2013-03-20: [[ MainStacksChanged ]]

MCmainstackschanged = True;

}

void MCDispatch::destroystack(MCStack *sptr, Boolean needremove)

{

if (needremove)

removestack(sptr);

if (sptr == MCstaticdefaultstackptr)

MCstaticdefaultstackptr = stacks;

if (sptr == MCdefaultstackptr)

MCdefaultstackptr = MCstaticdefaultstackptr;

if (MCacptr != NULL && MCacptr->getmessagestack() == sptr)

MCacptr->setmessagestack(NULL);

Boolean oldstate = MClockmessages;

MClockmessages = True;

delete sptr;

MClockmessages = oldstate;

}

static bool attempt_to_loadfile(IO_handle& r_stream, MCStringRef& r_path, const char *p_path_format, ...)

{

MCAutoStringRef t_trial_path;

va_list t_args;

va_start(t_args, p_path_format);

/* UNCHECKED */ MCStringFormatV(&t_trial_path, p_path_format, t_args);

va_end(t_args);

IO_handle t_trial_stream;

t_trial_stream = MCS_open(*t_trial_path, kMCOpenFileModeRead, True, False, 0);

if (t_trial_stream != nil)

{

r_path = (MCStringRef)MCValueRetain(*t_trial_path);

r_stream = t_trial_stream;

return true;

}

return false;

}

Boolean MCDispatch::openstartup(MCStringRef sname, MCStringRef& outpath, IO_handle &stream)

{

if (enginedir == nil)

return False;

if (attempt_to_loadfile(stream, outpath, "%s/%@", startdir, sname))

return True;

if (attempt_to_loadfile(stream, outpath, "%s/%@", enginedir, sname))

return True;

return False;

}

Boolean MCDispatch::openenv(MCStringRef sname, MCStringRef env,

MCStringRef& outpath, IO_handle &stream, uint4 offset)

{

MCAutoStringRef t_env;

if (!MCS_getenv(env, &t_env))

return False;

bool t_found;

t_found = false;

MCStringRef t_rest_of_env;

t_rest_of_env = MCValueRetain(env);

while(!t_found && !MCStringIsEmpty(t_rest_of_env))

{

MCAutoStringRef t_env_path;

MCStringRef t_next_rest_of_env;

/* UNCHECKED */ MCStringDivideAtChar(t_rest_of_env, ENV_SEPARATOR, kMCStringOptionCompareExact, &t_env_path, t_next_rest_of_env);

if (attempt_to_loadfile(stream, outpath, "%@/%@", *t_env_path, sname))

t_found = true;

MCValueRelease(t_rest_of_env);

t_rest_of_env = t_next_rest_of_env;

}

MCValueRelease(t_rest_of_env);

return t_found;

}

IO_stat readheader(IO_handle& stream, uint32_t& r_version)

{

char tnewheader[NEWHEADERSIZE];

if (IO_read(tnewheader, NEWHEADERSIZE, stream) == IO_NORMAL)

{

// AL-2014-10-27: [[ Bug 12558 ]] Check for valid header prefix

if (strncmp(tnewheader, "REVO", HEADERPREFIXSIZE) == 0)

{

// The header version can now consist of any alphanumeric characters

// They map to numbers as follows:

// 0-9 -> 0-9

// A-Z -> 10-35

// a-z -> 36-61

uint1 versionnum[4];

for (uint1 i = 0; i < 4; i++)

{

char t_char = tnewheader[i + 4];

if ('0' <= t_char && t_char <= '9')

versionnum[i] = (uint1)(t_char - '0');

else if ('A' <= t_char && t_char <= 'Z')

versionnum[i] = (uint1)(t_char - 'A' + 10);

else if ('a' <= t_char && t_char <= 'z')

versionnum[i] = (uint1)(t_char - 'a' + 36);

else

return IO_ERROR;

}

// Future file format versions will always still compare greater than MAX_STACKFILE_VERSION,

// so it is ok that r_version does not accurately reflect future version values.

// TODO: change this, and comparisons for version >= 7000 / 5500, etc

r_version = versionnum[0] * 1000;

r_version += versionnum[1] * 100;

r_version += versionnum[2] * 10;

r_version += versionnum[3];

}

else

{

char theader[HEADERSIZE + 1];

theader[HEADERSIZE] = '\0';

uint4 offset;

strncpy(theader, tnewheader, NEWHEADERSIZE);

if (IO_read(theader + NEWHEADERSIZE, HEADERSIZE - NEWHEADERSIZE, stream) == IO_NORMAL

&& MCU_offset(SIGNATURE, theader, offset))

{

if (theader[offset - 1] != '\n' || theader[offset - 2] == '\r')

{

MCresult->sets("stack was corrupted by a non-binary file transfer");

return IO_ERROR;

}

r_version = (theader[offset + VERSION_OFFSET] - '0') * 1000;

r_version += (theader[offset + VERSION_OFFSET + 2] - '0') * 100;

}

else

return IO_ERROR;

}

}

else

{

// Could not read header

return IO_ERROR;

}

return IO_NORMAL;

}

// This method reads a stack from the given stream. The stack is set to

// have parent MCDispatch, and filename MCcmd. It is designed to be used

// for embedded stacks/deployed stacks/revlet stacks.

IO_stat MCDispatch::readstartupstack(IO_handle stream, MCStack*& r_stack)

{

uint32_t version;

uint1 charset, type;

char *newsf;

// MW-2013-11-19: [[ UnicodeFileFormat ]] newsf is no longer used.

if (readheader(stream, version) != IO_NORMAL

|| IO_read_uint1(&charset, stream) != IO_NORMAL

|| IO_read_uint1(&type, stream) != IO_NORMAL

|| IO_read_cstring_legacy(newsf, stream, 2) != IO_NORMAL)

return IO_ERROR;

// MW-2008-10-20: [[ ParentScripts ]] Set the boolean flag that tells us whether

// parentscript resolution is required to false.

s_loaded_parent_script_reference = false;

MCtranslatechars = charset != CHARSET;

delete newsf; // stackfiles is obsolete

MCStack *t_stack = nil;

/* UNCHECKED */ MCStackSecurityCreateStack(t_stack);

t_stack -> setparent(this);

// MM-2013-10-30: [[ Bug 11333 ]] Set the filename of android mainstack to apk/mainstack (previously was just apk).

// This solves relative file path referencing issues.

#ifdef TARGET_SUBPLATFORM_ANDROID

MCAutoStringRef t_filename;

/* UNCHECKED */ MCStringFormat(&t_filename, "%@/mainstack", MCcmd);

t_stack -> setfilename(*t_filename);

#else

t_stack -> setfilename(MCcmd);

#endif

if (IO_read_uint1(&type, stream) != IO_NORMAL

|| type != OT_STACK && type != OT_ENCRYPT_STACK

|| t_stack->load(stream, version, type) != IO_NORMAL)

{

delete t_stack;

return IO_ERROR;

}

if (t_stack->load_substacks(stream, version) != IO_NORMAL

|| IO_read_uint1(&type, stream) != IO_NORMAL

|| type != OT_END)

{

delete t_stack;

return IO_ERROR;

}

// We are reading the startup stack, so this becomes the root of the

// stack list.

stacks = t_stack;

r_stack = t_stack;

#ifndef _MOBILE

// Make sure parent script references are up to date.

if (s_loaded_parent_script_reference)

t_stack -> resolveparentscripts();

#else

// Mark the stack as needed parentscript resolution. This is done after

// aux stacks have been loaded.

if (s_loaded_parent_script_reference)

t_stack -> setextendedstate(True, ECS_USES_PARENTSCRIPTS);

#endif

return IO_NORMAL;

}

// MW-2012-02-17: [[ LogFonts ]] Load a stack file, ensuring we clear up any

// font table afterwards - regardless of errors.

IO_stat MCDispatch::readfile(MCStringRef p_openpath, MCStringRef p_name, IO_handle &stream, MCStack *&sptr)

{

// Various places like to call this function with the first two parameters as NULL

if (p_openpath == nil)

p_openpath = kMCEmptyString;

if (p_name == nil)

p_name = kMCEmptyString;

IO_stat stat;

stat = doreadfile(p_openpath, p_name, stream, sptr);

MCLogicalFontTableFinish();

return stat;

}

// MW-2012-02-17: [[ LogFonts ]] Actually load the stack file (wrapped by readfile

// to handle font table cleanup).

IO_stat MCDispatch::doreadfile(MCStringRef p_openpath, MCStringRef p_name, IO_handle &stream, MCStack *&sptr)

{

Boolean loadhome = False;

uint32_t version;

sptr = NULL;

// MW-2014-09-30: [[ ScriptOnlyStack ]] First see if it is a binary stack.

if (readheader(stream, version) == IO_NORMAL)

{

if (version > MAX_STACKFILE_VERSION)

{

MCresult->sets("stack was produced by a newer version");

return IO_ERROR;

}

// MW-2008-10-20: [[ ParentScripts ]] Set the boolean flag that tells us whether

// parentscript resolution is required to false.

s_loaded_parent_script_reference = false;

// MW-2013-11-19: [[ UnicodeFileFormat ]] newsf is no longer used.

uint1 charset, type;

char *newsf;

if (IO_read_uint1(&charset, stream) != IO_NORMAL

|| IO_read_uint1(&type, stream) != IO_NORMAL

|| IO_read_cstring_legacy(newsf, stream, 2) != IO_NORMAL)

{

MCresult->sets("stack is corrupted, check for ~ backup file");

return IO_ERROR;

}

delete newsf; // stackfiles is obsolete

MCtranslatechars = charset != CHARSET;

sptr = nil;

/* UNCHECKED */ MCStackSecurityCreateStack(sptr);

if (stacks == NULL)

sptr->setparent(this);

else

sptr->setparent(stacks);

sptr->setfilename(p_openpath);

if (MCModeCanLoadHome() && type == OT_HOME)

{

// MW-2013-11-19: [[ UnicodeFileFormat ]] These strings are never written out, so

// legacy.

char *lstring = NULL;

char *cstring = NULL;

IO_read_cstring_legacy(lstring, stream, 2);

IO_read_cstring_legacy(cstring, stream, 2);

delete lstring;

delete cstring;

}

MCresult -> clear();

if (IO_read_uint1(&type, stream) != IO_NORMAL

|| type != OT_STACK && type != OT_ENCRYPT_STACK

|| sptr->load(stream, version, type) != IO_NORMAL)

{

if (MCresult -> isclear())

MCresult->sets("stack is corrupted, check for ~ backup file");

destroystack(sptr, False);

sptr = NULL;

return IO_ERROR;

}

// MW-2011-08-09: [[ Groups ]] Make sure F_GROUP_SHARED is set

// appropriately.

sptr -> checksharedgroups();

if (sptr->load_substacks(stream, version) != IO_NORMAL

|| IO_read_uint1(&type, stream) != IO_NORMAL

|| type != OT_END)

{

if (MCresult -> isclear())

MCresult->sets("stack is corrupted, check for ~ backup file");

destroystack(sptr, False);

sptr = NULL;

return IO_ERROR;

}

}

// MW-2014-09-30: [[ ScriptOnlyStack ]] If we failed to load a stack from that step

// then check to see if it is a script file stack.

if (sptr == NULL)

{

// Clear the error return.

MCresult -> clear();

// Reset to position 0.

MCS_seek_set(stream, 0);

// Load the file into memory - we need to process a byteorder mark and any

// line endings.

int64_t t_size;

t_size = MCS_fsize(stream);

uint8_t *t_script;

/* UNCHECKED */ MCMemoryAllocate(t_size, t_script);

if (IO_read(t_script, t_size, stream) == IO_ERROR)

{

MCresult -> sets("unable to read file");

return IO_ERROR;

}

// SN-2014-10-16: [[ Merge-6.7.0-rc-3 ]] Update to StringRef

MCFileEncodingType t_file_encoding = MCS_resolve_BOM(stream);

MCStringEncoding t_string_encoding;

MCAutoStringRef t_raw_script_string, t_LC_script_string;

uint32_t t_BOM_offset;

switch (t_file_encoding)

{

case kMCFileEncodingUTF8:

t_BOM_offset = 3;

t_string_encoding = kMCStringEncodingUTF8;

break;

case kMCFileEncodingUTF16:

t_string_encoding = kMCStringEncodingUTF16;

t_BOM_offset = 2;

break;

case kMCFileEncodingUTF16BE:

t_string_encoding = kMCStringEncodingUTF16BE;

t_BOM_offset = 2;

break;

case kMCFileEncodingUTF16LE:

t_string_encoding = kMCStringEncodingUTF16LE;

t_BOM_offset = 2;

break;

default:

// Assume native

t_string_encoding = kMCStringEncodingNative;

t_BOM_offset = 0;

break;

}

/* UNCHECKED */ MCStringCreateWithBytes(t_script + t_BOM_offset, t_size - t_BOM_offset, t_string_encoding, false, &t_raw_script_string);

/* UNCHECKED */ MCStringConvertLineEndingsToLiveCode(*t_raw_script_string, &t_LC_script_string);

MCMemoryDeallocate(t_script);

// Now attempt to parse the header line:

// 'script' <string>

MCScriptPoint sp(*t_LC_script_string);

// Parse 'script' token.

if (sp . skip_token(SP_FACTOR, TT_PROPERTY, P_SCRIPT) == PS_NORMAL)

{

// Parse <string> token.

Symbol_type t_type;

if (sp . next(t_type) == PS_NORMAL &&

t_type == ST_LIT)

{

MCNewAutoNameRef t_script_name;

MCNameClone(sp . gettoken_nameref(), &t_script_name);

// Parse end of line.

Parse_stat t_stat;

t_stat = sp . next(t_type);

if (t_stat == PS_EOL || t_stat == PS_EOF)

{

// MW-2014-10-23: [[ Bug ]] Make sure we trim the correct number of lines.

// SN-2014-10-16: [[ Merge-6.7.0-rc-3 ]] Update to StringRef

// Now trim the ep down to the remainder of the script.

// Trim the header.

uint32_t t_lines = sp.getline();

uint32_t t_index = 0;

// Jump over the possible lines before the string token

while (MCStringFirstIndexOfChar(*t_LC_script_string, '\n', t_index, kMCStringOptionCompareExact, t_index) &&

t_lines > 0)

t_lines -= 1;

// Add one to the index so we include the LF

t_index += 1;

// t_line now has the last LineFeed of the token

MCAutoStringRef t_LC_script_body;

// We copy the body of the stack script

MCStringCopySubstring(*t_LC_script_string, MCRangeMake(t_index, MCStringGetLength(*t_LC_script_string) - t_index), &t_LC_script_body);

// Create a stack.

/* UNCHECKED */ MCStackSecurityCreateStack(sptr);

// Set its parent.

if (stacks == NULL)

sptr->setparent(this);

else

sptr->setparent(stacks);

// Set its filename.

sptr->setfilename(p_openpath);

// Set its name.

sptr -> setname(*t_script_name);

// Make it invisible

sptr -> setflag(False, F_VISIBLE);

// Set it up as script only.

sptr -> setasscriptonly(*t_LC_script_body);

}

}

}

}

// MW-2014-09-30: [[ ScriptOnlyStack ]] If we managed to load a stack as either binary

// or script, then do the normal processing.

if (sptr != NULL)

{

if (stacks != NULL)

{

MCStack *tstk = stacks;

do

{

if (sptr->hasname(tstk->getname()))

{

MCAutoNameRef t_stack_name;

/* UNCHECKED */ t_stack_name . Clone(sptr -> getname());

delete sptr;

sptr = NULL;

if (MCStringIsEqualTo(tstk -> getfilename(), p_openpath, kMCStringOptionCompareCaseless))

sptr = tstk;

else

{

MCdefaultstackptr->getcard()->message_with_valueref_args(MCM_reload_stack, tstk->getname(), p_openpath);

tstk = stacks;

do

{

if (MCNameIsEqualTo(t_stack_name, tstk->getname(), kMCCompareCaseless))

{

sptr = tstk;

break;

}

tstk = (MCStack *)tstk->next();

}

while (tstk != stacks);

}

return IO_NORMAL;

}

tstk = (MCStack *)tstk->next();

}

while (tstk != stacks);

}

appendstack(sptr);

sptr->extraopen(false);

// MW-2008-10-28: [[ ParentScript ]]

// We just loaded a stackfile, so check to see if parentScript resolution

// is required and if so do it.

// MW-2009-01-28: [[ Inherited parentScripts ]]

// Resolving parentScripts may allocate memory, so 'resolveparentscripts'

// will return false if it fails to allocate what it needs. At some point

// this needs to be dealt with by deleting the stack and returning an error,

// *However* at the time of writing, 'readfile' isn't designed to handle

// this - so we just ignore the result for now (note that all the 'load'

// methods *fail* to check for no-memory errors!).

if (s_loaded_parent_script_reference)

sptr -> resolveparentscripts();

return IO_NORMAL;

}

// MW-2014-09-30: [[ ScriptOnlyStack ]] Finally attempt to load the script in legacy

// modes - either as a single script, or as a HyperCard conversion.

MCS_seek_set(stream, 0);

if (stacks == NULL)

{

MCnoui = True;

MCscreen = new MCUIDC;

/* UNCHECKED */ MCStackSecurityCreateStack(stacks);

MCdefaultstackptr = MCstaticdefaultstackptr = stacks;

stacks->setparent(this);

stacks->setname_cstring("revScript");

uint4 size = (uint4)MCS_fsize(stream);

MCAutoPointer<char> script;

script = new char[size + 2];

(*script)[size] = '\n';

(*script)[size + 1] = '\0';

if (IO_read(*script, size, stream) != IO_NORMAL)

return IO_ERROR;

MCAutoStringRef t_script_str;

/* UNCHECKED */ MCStringCreateWithCString(*script, &t_script_str);

if (!stacks -> setscript_from_commandline(*t_script_str))

return IO_ERROR;

}

else

{

// MW-2008-06-12: [[ Bug 6476 ]] Media won't open HC stacks

if (!MCdispatcher->cut(True) || hc_import(p_name, stream, sptr) != IO_NORMAL)

{

MCresult->sets("file is not a stack");

return IO_ERROR;

}

}

return IO_NORMAL;

}

IO_stat MCDispatch::loadfile(MCStringRef p_name, MCStack *&sptr)

{

IO_handle stream;

MCAutoStringRef t_open_path;

bool t_found;

t_found = false;

if (!t_found)

{

if ((stream = MCS_open(p_name, kMCOpenFileModeRead, True, False, 0)) != NULL)

{

// This should probably use resolvepath().

if (MCStringGetCharAtIndex(p_name, 0) != PATH_SEPARATOR

&& MCStringGetCharAtIndex(p_name, 1) != ':')

{

MCAutoStringRef t_curpath;

/* UNCHECKED */ MCS_getcurdir(&t_curpath);

/* UNCHECKED */ MCStringFormat(&t_open_path, "%@/%@", *t_curpath, p_name);

}

else

t_open_path = p_name;

t_found = true;

}

}

if (!t_found)

{

MCAutoStringRef t_leaf_name;

uindex_t t_leaf_index;

if (MCStringLastIndexOfChar(p_name, PATH_SEPARATOR, UINDEX_MAX, kMCStringOptionCompareExact, t_leaf_index))

/* UNCHECKED */ MCStringCopySubstring(p_name, MCRangeMake(t_leaf_index + 1, MCStringGetLength(p_name) - (t_leaf_index + 1)), &t_leaf_name);

else

t_leaf_name = p_name;

if ((stream = MCS_open(*t_leaf_name, kMCOpenFileModeRead, True, False, 0)) != NULL)

{

MCAutoStringRef t_curpath;

/* UNCHECKED */ MCS_getcurdir(&t_curpath);

/* UNCHECKED */ MCStringFormat(&t_open_path, "%@/%@", *t_curpath, p_name);

t_found = true;

}

}

if (!t_found)