/*
* Try loading a resource from the executable file
*/
osfildef *CResLoader::open_exe_res(const char *respath,
const char *restype)
{
osfildef *exe_fp;
/*
* if we don't have an executable filename stored, or we don't have an
* executable resource type ID, we can't load the resource
*/
if (exe_filename_ == 0 || restype == 0)
return 0;
/* find the executable file's resources */
exe_fp = os_exeseek(exe_filename_, restype);
/* if we found something, try loading from that file */
if (exe_fp != 0)
{
CVmImageLoaderMres_resload res_ifc(respath);
/* try loading the resources */
CVmImageLoader::
load_resources_from_fp(exe_fp, exe_filename_, &res_ifc);
/* check to see if we found it */
if (res_ifc.found_resource())
{
/* check the type */
if (res_ifc.get_link_fname() != 0)
{
/*
* it's a linked local file - close the exe file and open
* the local file instead
*/
osfcls(exe_fp);
exe_fp = osfoprb(res_ifc.get_link_fname(), OSFOPRB);
}
else
{
/* we got an exe resource - seek to the starting byte */
osfseek(exe_fp, res_ifc.get_resource_seek(), OSFSK_SET);
}
}
else
{
/* didn't find it - close and forget the executable file */
osfcls(exe_fp);
exe_fp = 0;
}
}
/* return the executable file pointer, if we found the resource */
return exe_fp;
}
/*
* Try loading a resource from a resource library
*/
osfildef *CResLoader::open_lib_res(const char *libfile,
const char *respath)
{
osfildef *fp;
/* try opening the file */
fp = osfoprb(libfile, OSFTT3IMG);
/* if we couldn't open the file, we can't load the resource */
if (fp == 0)
return 0;
/* set up a resource finder for our resource */
CVmImageLoaderMres_resload res_ifc(respath);
/* load the file, so that we can try finding the resource */
CVmImageLoader::load_resources_from_fp(fp, libfile, &res_ifc);
/* check to see if we found it */
if (res_ifc.found_resource())
{
/* we got it - check the type */
if (res_ifc.get_link_fname() != 0)
{
/*
* linked local file - close the library file and open the
* local file instead
*/
osfcls(fp);
fp = osfoprb(res_ifc.get_link_fname(), OSFOPRB);
}
else
{
/* embedded resource - seek to the first byte */
osfseek(fp, res_ifc.get_resource_seek(), OSFSK_SET);
}
/* return the library file handle */
return fp;
}
else
{
/* didn't find the resource - close the library */
osfcls(fp);
/* tell the caller we didn't find the resource */
return 0;
}
}
int CVmNetFile::can_write(VMG_ const char *fname, int sfid)
{
/* note whether the file already exists */
int existed = !osfacc(fname);
/* try opening it (keeping existing contents) or creating it */
osfildef *fp = osfoprwb(fname, OSFTBIN);
if (fp != 0)
{
/* successfully opened it - close it */
osfcls(fp);
/* if it didn't already exist, delete it */
if (!existed)
osfdel(fname);
/* success */
return TRUE;
}
else
{
/* couldn't open the file */
return FALSE;
}
}
/*
* Deletion
*/
CTcSrcFile::~CTcSrcFile()
{
/* close my source file */
if (fp_ != 0)
osfcls(fp_);
/* release my character mapper */
if (mapper_ != 0)
mapper_->release_ref();
}
/*
* Load a Unicode mapping file
*/
static void load_unicode_file(char *filename, unicode_map_t map[256],
char *infile, int linenum)
{
osfildef *fp;
int linenum_u;
/* open the unicode file */
fp = osfoprs(filename, OSFTTEXT);
if (fp == 0)
{
printf("%s: line %d: unable to open unicode mapping file \"%s\"\n",
infile, linenum, filename);
return;
}
/* read it */
for (linenum_u = 1 ;; ++linenum_u)
{
char buf[256];
char *p;
unsigned int n1;
unsigned int n2;
/* read the next line */
if (osfgets(buf, sizeof(buf), fp) == 0)
break;
/* skip leading spaces */
for (p = buf ; isspace(*p) ; ++p) ;
/* if it's blank or starts with a comment, ignore it */
if (*p == 0x1a || *p == '#' || *p == '\n' || *p == '\r' || *p == '\0')
continue;
/* read the first number - this is the native character value */
if (read_number(&n1, &p, filename, linenum_u, TRUE))
break;
/* read the second number */
if (read_number(&n2, &p, filename, linenum_u, FALSE))
break;
/* set the association */
map[n1].unicode_val = n2;
}
/* done with the file */
osfcls(fp);
}
static void copybytes(osfildef *fpin, osfildef *fpout, ulong siz)
{
uint cursiz;
/* copy bytes until we run out */
while (siz != 0)
{
/* we can copy up to one full buffer at a time */
cursiz = (siz > sizeof(copybuf) ? sizeof(copybuf) : siz);
/* deduct the amount we're copying from the total */
siz -= cursiz;
/* read from input, copy to output */
if (osfrb(fpin, copybuf, cursiz)
|| osfwb(fpout, copybuf, cursiz))
{
/* error - close files and display an error */
osfcls(fpin);
osfcls(fpout);
errexit("error copying resource", 1);
}
}
}
/*
* Given the name of a file, determine the engine (TADS 2 or TADS 3) for
* which the file was compiled, based on the file's signature. Returns
* one of the VM_GGT_xxx codes.
*/
static int vm_get_game_type_for_file(const char *filename)
{
osfildef *fp;
char buf[16];
int ret;
/* try opening the filename exactly as given */
fp = osfoprb(filename, OSFTBIN);
/* if the file doesn't exist, tell the caller */
if (fp == 0)
return VM_GGT_NOT_FOUND;
/* read the first few bytes of the file, where the signature resides */
if (osfrb(fp, buf, 16))
{
/*
* error reading the file - any valid game file is going to be at
* least long enough to hold the number of bytes we asked for, so
* it must not be a valid file
*/
ret = VM_GGT_INVALID;
}
else
{
/* check the signature we read against the known signatures */
if (memcmp(buf, "TADS2 bin\012\015\032", 12) == 0)
ret = VM_GGT_TADS2;
else if (memcmp(buf, "T3-image\015\012\032", 11) == 0)
ret = VM_GGT_TADS3;
else
ret = VM_GGT_INVALID;
}
/* close the file */
osfcls(fp);
/* return the version identifier */
return ret;
}
/* write game to binary file */
void fiowrt(mcmcxdef *mctx, voccxdef *vctx, tokcxdef *tokctx, tokthdef *tab,
uchar *fmts, uint fmtl, char *fname, uint flags, objnum preinit,
int extc, uint prpcnt, char *filever)
{
osfildef *fp;
/* open the file */
if (!(fp = osfoprwtb(fname, OSFTGAME)))
errsig(vctx->voccxerr, ERR_OPWGAM);
ERRBEGIN(vctx->voccxerr)
/* write the file */
fiowrt1(mctx, vctx, tokctx, tab, fmts, fmtl, fp, flags, preinit,
extc, prpcnt, filever);
os_settype(fname, OSFTGAME);
ERRCLEAN(vctx->voccxerr)
/* clean up by closing the file */
osfcls(fp);
ERRENDCLN(vctx->voccxerr)
}
/*
* Initialize the error subsystem for the compiler
*/
void CTcMain::tc_err_init(size_t param_stack_size,
CResLoader *res_loader)
{
/* initialize the error stack */
err_init(1024);
/* if this is the first initializer, set things up */
if (err_refs_ == 0)
{
/* if we haven't loaded external compiler messages, load them */
if (!err_no_extern_messages_
&& tc_messages == &tc_messages_english[0])
{
osfildef *fp;
/* try finding a message file */
fp = res_loader->open_res_file("t3make.msg", 0, "XMSG");
if (fp != 0)
{
/* try loading it */
err_load_message_file(fp, &tc_messages, &tc_message_count,
&tc_messages_english[0],
tc_message_count_english);
/* done with the file */
osfcls(fp);
}
else
{
/* note the failure, so we don't try again */
err_no_extern_messages_ = FALSE;
}
}
}
/* count the reference depth */
++err_refs_;
}
/*
* Find a resource in a file, given the filename.
*
* Fills in the resource information structure with the seek offset and
* size of the resource in the file and returns true if the resource is
* found; returns false if a resource with the given name doesn't exist in
* the file.
*/
int tads_find_resource(const char *fname, const char *resname,
tads_resinfo *info)
{
osfildef *fp;
int found;
/* open the file */
if ((fp = osfoprb(fname, OSFTGAME)) == 0
&& (fp = osfoprb(fname, OSFTT3IMG)) == 0)
{
/* we couldn't open the file, so there's no resource to be found */
return FALSE;
}
/* find the resource in the file */
found = tads_find_resource_fp(fp, resname, info);
/* we're done with the file - close it */
osfcls(fp);
/* return our found or not-found indication */
return found;
}
/*
* Parse a game file and retrieve game information
*/
int CTadsGameInfo::read_from_file(const char *fname)
{
/* open the file */
osfildef *fp;
if ((fp = osfoprb(fname, OSFTGAME)) == 0
&& (fp = osfoprb(fname, OSFTT3IMG)) == 0)
{
/*
* we can't open the file, so we obviously can't parse it to find
* game information
*/
return 0;
}
/* parse the file and find the game information */
int ret = read_from_fp(fp);
/* we're done with the file - close it */
osfcls(fp);
/* return the results from the parser */
return ret;
}
/*
* Main Entrypoint for command-line invocations. For simplicity, a
* normal C main() or equivalent entrypoint can invoke this routine
* directly, using the usual argc/argv conventions.
*
* Returns a status code suitable for use with exit(): OSEXSUCC if we
* successfully loaded and ran an executable, OSEXFAIL on failure. If
* an error occurs, we'll fill in 'errbuf' with a message describing the
* problem.
*/
int vm_run_image_main(CVmMainClientIfc *clientifc,
const char *executable_name,
int argc, char **argv, int defext, int test_mode,
CVmHostIfc *hostifc)
{
int curarg;
char image_file_name[OSFNMAX];
int stat;
const char *script_file;
int script_quiet = TRUE;
const char *log_file;
const char *cmd_log_file;
const char *res_dir;
int load_from_exe;
int show_banner;
int found_image;
int hide_usage;
int usage_err;
const char *charset;
const char *log_charset;
char *saved_state;
/* we haven't found an image file yet */
found_image = FALSE;
/* presume we'll show usage on error */
hide_usage = FALSE;
/* presume there will be no usage error */
usage_err = FALSE;
/* presume we won't have any console input/output files */
script_file = 0;
log_file = 0;
cmd_log_file = 0;
/* presume we'll use the default OS character sets */
charset = 0;
log_charset = 0;
/* presume we won't show the banner */
show_banner = FALSE;
/* presume we won't load from the .exe file */
load_from_exe = FALSE;
/* check to see if we can load from the .exe file */
{
osfildef *fp;
/* look for an image file attached to the executable */
fp = os_exeseek(argv[0], "TGAM");
if (fp != 0)
{
/* close the file */
osfcls(fp);
/* note that we want to load from the executable */
load_from_exe = TRUE;
}
}
/* presume we won't restore a saved state file */
saved_state = 0;
/* presume we won't have a resource directory specified */
res_dir = 0;
/* scan options */
for (curarg = 1 ; curarg < argc && argv[curarg][0] == '-' ; ++curarg)
{
/*
* if the argument is just '-', it means we're explicitly leaving
* the image filename blank and skipping to the arguments to the VM
* program itself
*/
if (argv[curarg][1] == '\0')
break;
/* check the argument */
switch(argv[curarg][1])
{
case 'b':
if (strcmp(argv[curarg], "-banner") == 0)
{
/* make a note to show the banner */
show_banner = TRUE;
}
else
goto opt_error;
break;
case 'c':
if (strcmp(argv[curarg], "-cs") == 0)
{
++curarg;
if (curarg < argc)
charset = argv[curarg];
else
goto opt_error;
}
else if (strcmp(argv[curarg], "-csl") == 0)
{
++curarg;
if (curarg < argc)
log_charset = argv[curarg];
else
goto opt_error;
}
else
goto opt_error;
break;
case 'n':
if (strcmp(argv[curarg], "-nobanner") == 0)
{
/* make a note not to show the banner */
show_banner = FALSE;
}
else
goto opt_error;
break;
case 's':
/* file safety level - check the range */
if (argv[curarg][2] < '0' || argv[curarg][2] > '4'
|| argv[curarg][3] != '\0')
{
/* invalid level */
goto opt_error;
}
else
{
/* set the level in the host application */
hostifc->set_io_safety(argv[curarg][2] - '0');
}
break;
case 'i':
case 'I':
/*
* read from a script file (little 'i' reads silently, big 'I'
* echoes the log as it goes) - the next argument, or the
* remainder of this argument, is the filename
*/
script_quiet = (argv[curarg][1] == 'i');
script_file = get_opt_arg(argc, argv, &curarg, 2);
if (script_file == 0)
goto opt_error;
break;
case 'l':
/* log output to file */
log_file = get_opt_arg(argc, argv, &curarg, 2);
if (log_file == 0)
goto opt_error;
break;
case 'o':
/* log commands to file */
cmd_log_file = get_opt_arg(argc, argv, &curarg, 2);
if (cmd_log_file == 0)
goto opt_error;
break;
case 'p':
/* check what follows */
if (strcmp(argv[curarg], "-plain") == 0)
{
/* tell the client to set plain ASCII mode */
clientifc->set_plain_mode();
break;
}
else
goto opt_error;
break;
case 'r':
/* get the name of the saved state file to restore */
saved_state = get_opt_arg(argc, argv, &curarg, 2);
if (saved_state == 0)
goto opt_error;
break;
case 'R':
/* note the resource root directory */
res_dir = get_opt_arg(argc, argv, &curarg, 2);
if (res_dir == 0)
goto opt_error;
break;
default:
opt_error:
/* discard remaining arguments */
curarg = argc;
/* note the error */
usage_err = TRUE;
break;
}
}
/*
* If there was no usage error so far, but we don't have an image
* filename argument, try to find the image file some other way. If we
* found an image file embedded in the executable, don't even bother
* looking for an image-file argument - we can only run the embedded
* image in this case.
*/
if (usage_err)
{
/* there was a usage error - don't bother looking for an image file */
}
else if (!load_from_exe
&& curarg + 1 <= argc
&& strcmp(argv[curarg], "-") != 0)
{
/* the last argument is the image file name */
strcpy(image_file_name, argv[curarg]);
found_image = TRUE;
/*
* If the given filename exists, use it as-is; otherwise, if
* we're allowed to add an extension, try applying a default
* extension of "t3" (formerly "t3x") to the given name.
*/
if (defext && osfacc(image_file_name))
{
/* the given name doesn't exist - try a default extension */
os_defext(image_file_name, "t3"); /* formerly "t3x" */
}
}
else
{
/*
* if we're loading from the executable, try using the executable
* filename as the image file
*/
if (load_from_exe
&& os_get_exe_filename(image_file_name, sizeof(image_file_name),
argv[0]))
found_image = TRUE;
/*
* If we still haven't found an image file, try to get the image
* file from the saved state file, if one was specified. Don't
* attempt this if we're loading the image from the executable, as
* we don't want to allow running a different image file in that
* case.
*/
if (!load_from_exe && !found_image && saved_state != 0)
{
osfildef *save_fp;
/* open the saved state file */
save_fp = osfoprb(saved_state, OSFTT3SAV);
if (save_fp != 0)
{
/* get the name of the image file */
if (CVmSaveFile::restore_get_image(
save_fp, image_file_name, sizeof(image_file_name)) == 0)
{
/* we successfully obtained the filename */
found_image = TRUE;
}
/* close the file */
osfcls(save_fp);
}
}
/*
* if we haven't found the image, and the host system provides a
* way of asking the user for a filename, try that
*/
if (!load_from_exe && !found_image)
{
/* ask the host system for a game name */
switch (hostifc->get_image_name(image_file_name,
sizeof(image_file_name)))
{
case VMHOST_GIN_IGNORED:
/* no effect - we have no new information */
break;
case VMHOST_GIN_CANCEL:
/*
* the user cancelled the dialog - we don't have a
* filename, but we also don't want to show usage, since
* the user chose not to proceed
*/
hide_usage = TRUE;
break;
case VMHOST_GIN_ERROR:
/*
* an error occurred showing the dialog - there's not
* much we can do except show the usage message
*/
break;
case VMHOST_GIN_SUCCESS:
/* that was successful - we have an image file now */
found_image = TRUE;
break;
}
}
}
/*
* if we don't have an image file name by this point, we can't
* proceed - show the usage message and terminate
*/
if (usage_err || !found_image)
{
char buf[OSFNMAX + 1024];
/* show the usage message if allowed */
if (load_from_exe && !usage_err)
{
sprintf(buf, "An error occurred loading the T3 VM program from "
"the embedded data file. This application executable "
"file might be corrupted.\n");
/* display the message */
clientifc->display_error(0, buf, FALSE);
}
else if (!hide_usage)
{
/* build the usage message */
sprintf(buf,
"%s\n"
"usage: %s [options] %sarguments]\n"
"options:\n"
" -banner - show the version/copyright banner\n"
" -cs xxx - use character set 'xxx' for keyboard "
"and display\n"
" -csl xxx - use character set 'xxx' for log files\n"
" -i file - read command input from file (quiet mode)\n"
" -I file - read command input from file (echo mode)\n"
" -l file - log all console input/output to file\n"
" -o file - log console input to file\n"
" -plain - run in plain mode (no cursor positioning, "
"colors, etc.)\n"
" -r file - restore saved state from file\n"
" -R dir - set directory for external resources\n"
" -s# - set I/O safety level (# in range 0 to 4 - 0 "
"is the least\n"
" restrictive, 4 allows no file I/O at all)\n"
"\n"
"If provided, the optional extra arguments are passed "
"to the program's\n"
"main entrypoint.\n",
T3VM_BANNER_STRING, executable_name,
load_from_exe ? "[- " : "<image-file-name> [");
/* display the message */
clientifc->display_error(0, buf, FALSE);
}
/* return failure */
return OSEXFAIL;
}
/*
* if we're in test mode, replace the first argument to the program
* with its root name, so that we don't include any path information
* in the argument list
*/
if (test_mode && curarg <= argc && argv[curarg] != 0)
argv[curarg] = os_get_root_name(argv[curarg]);
/* run the program */
stat = vm_run_image(clientifc, image_file_name, hostifc,
argv + curarg, argc - curarg,
script_file, script_quiet, log_file, cmd_log_file,
load_from_exe, show_banner,
charset, log_charset,
saved_state, res_dir);
/* return the status code */
return stat;
}
/* process an operation */
static void procop(osfildef *fpout, opdef *op, ulong *first_xfcn)
{
osfildef *fpin;
char buf[128];
uint fsiz;
ulong sizpos;
ulong endpos;
/* remember location of first resource if necessary */
if (fpout && *first_xfcn == 0)
*first_xfcn = osfpos(fpout);
fpin = osfoprb(op->opfile, OSFTGAME);
if (fpin == 0)
{
rscptf("%s: ", op->opfile);
errexit("unable to open file", 1);
}
/* get file size */
osfseek(fpin, 0L, OSFSK_END);
fsiz = (uint)osfpos(fpin);
osfseek(fpin, 0L, OSFSK_SET);
/* set up the resource type part of the header */
switch(op->oprestype)
{
case RESTYPE_XFCN:
buf[0] = 4;
memcpy(buf + 1, "XFCN", 4);
break;
case RESTYPE_HTML:
buf[0] = 4;
memcpy(buf + 1, "HTML", 3);
break;
}
/* set up the rest of the header */
if (osfwb(fpout, buf, buf[0] + 1)) errexit("error writing resource", 1);
sizpos = osfpos(fpout); /* remember where size field goes */
oswp4(buf, 0);
if (osfwb(fpout, buf, 4)) errexit("error writing resource", 1);
/* set up the header */
oswp2(buf, fsiz);
buf[2] = strlen(op->opres);
strcpy(buf + 3, op->opres);
if (osfwb(fpout, buf, (uint)(buf[2] + 3)))
errexit("error writing resource", 1);
/* copy the resource to the output */
copybytes(fpin, fpout, fsiz);
/* write end position in the resource header */
endpos = osfpos(fpout);
oswp4(buf, endpos);
osfseek(fpout, sizpos, OSFSK_SET);
if (osfwb(fpout, buf, 4)) errexit("error writing resource", 1);
/* seek back to the end of the resource in the output file */
osfseek(fpout, endpos, OSFSK_SET);
/* done with the input file */
osfcls(fpin);
}
/*
* Main entrypoint
*/
int main(int argc, char **argv)
{
int curarg;
unsigned char input_map[256];
unsigned char output_map[256];
unsigned char input_map_set[256];
unsigned char output_map_set[256];
unsigned char *p;
int i;
osfildef *fp;
char *infile;
char *outfile;
int linenum;
static char sig[] = CMAP_SIG_S100;
int strict_mode = FALSE;
char id[5];
char ldesc[CMAP_LDESC_MAX_LEN + 1];
size_t len;
unsigned char lenbuf[2];
char *sys_info;
entity_map_t *entity_first;
entity_map_t *entity_last;
/* no parameters have been specified yet */
memset(id, 0, sizeof(id));
ldesc[0] = '\0';
sys_info = 0;
/* we have no entities in our entity mapping list yet */
entity_first = entity_last = 0;
/* scan options */
for (curarg = 1 ; curarg < argc && argv[curarg][0] == '-' ; ++curarg)
{
if (!stricmp(argv[curarg], "-strict"))
{
/* they want extra warnings */
strict_mode = TRUE;
}
else
{
/* consume all remaining options so we get a usage message */
curarg = argc;
break;
}
}
/* check for required arguments */
if (curarg + 1 >= argc)
{
printf("usage: mkchrtab [options] <source> <dest>\n"
" <source> is the input file\n"
" <dest> is the output file\n"
"Options:\n"
" -strict warn if any codes 128-255 are unassigned\n");
#if 0
/*
* The information about what goes in the file made the message way too
* long, so this has been removed. Users will want to the documentation
* instead of the usage message for information this detailed, so it
* didn't seem useful to keep it in here.
*/
printf("\n"
"The source file contains one entry per line, as follows:\n"
"\n"
"Set the internal character set identifier, which can be up "
"to four letters long\n"
"(note that the mapping file MUST contain an ID entry):\n"
" ID = id\n"
"\n");
printf("Set the internal character set's full display name:\n"
" LDESC = full name of character set\n"
"\n"
"Set system-dependent extra information (the meaning varies "
"by system):\n"
" EXTRA_SYSTEM_INFO = info-string\n"
"\n"
"Set the native default character:\n"
" NATIVE_DEFAULT = charval\n"
"Set the internal default character:\n"
" INTERNAL_DEFAULT = charval\n");
printf("Load Unicode mapping files:\n"
" UNICODE NATIVE=native-mapping INTERNAL=internal-mapping\n"
"\n"
"Reversibly map a native character code to an internal code:\n"
" native <-> internal\n"
"\n"
"Map a native code to an internal code, and map the internal "
"code back\nto a different native code:\n"
" native -> internal -> native\n"
"\n"
"Map a native code to an internal code, where the internal "
"code is already\nmapped to a native code by a previous line:\n"
" native -> internal\n"
"\n");
printf("Map an internal code to a native code, where the native "
"code is already\nmapped to an internal code by a previous "
"line:\n"
" native <- internal\n"
"\n"
"Map an HTML entity name to a native code or string:\n"
" &entity = internal-code [internal-code ...]\n"
"\n"
"Numbers can be specified in decimal (default), octal (by "
"prefixing the number\nwith a zero, as in '037'), or hex (by "
"prefixing the number with '0x', as in\n'0xb2'). A number "
"can also be entered as a character by enclosing the\n"
"character in single quotes.\n"
"\n"
"Blank lines and lines starting with a pound sign ('#') are "
"ignored.\n");
#endif /* 0 */
os_term(OSEXFAIL);
}
/* get the input and output filenames */
infile = argv[curarg];
outfile = argv[curarg + 1];
/*
* initialize the tables - by default, a character code in one
* character set maps to the same code in the other character set
*/
for (p = input_map, i = 0 ; i < sizeof(input_map)/sizeof(input_map[0]) ;
++i, ++p)
*p = (unsigned char)i;
for (p = output_map, i = 0 ;
i < sizeof(output_map)/sizeof(output_map[0]) ; ++i, ++p)
*p = (unsigned char)i;
/*
* initialize the "set" flags all to false, since we haven't set any
* of the values yet -- we'll use these flags to detect when the
* user attempts to set the same value more than once, so that we
* can issue a warning (multiple mappings are almost certainly in
* error)
*/
for (i = 0 ; i < sizeof(input_map_set)/sizeof(input_map_set[0]) ; ++i)
input_map_set[i] = output_map_set[i] = FALSE;
/* open the input file */
fp = osfoprs(infile, OSFTTEXT);
if (fp == 0)
{
printf("error: unable to open input file \"%s\"\n", infile);
os_term(OSEXFAIL);
}
/* parse the input file */
for (linenum = 1 ; ; ++linenum)
{
char buf[256];
char *p;
unsigned int n1, n2, n3;
int set_input;
int set_output;
/* presume we're going to set both values */
set_input = set_output = TRUE;
/* read the next line */
if (osfgets(buf, sizeof(buf), fp) == 0)
break;
/* scan off leading spaces */
for (p = buf ; isspace(*p) ; ++p) ;
/* if this line is blank, or starts with a '#', ignore it */
if (*p == '\0' || *p == '\n' || *p == '\r' || *p == '#')
continue;
/* check for special directives */
if (isalpha(*p) || *p == '_')
{
char *sp;
char *val;
size_t vallen;
size_t idlen;
/* find the end of the directive name */
for (sp = p ; isalpha(*sp) || *sp == '_' ; ++sp) ;
idlen = sp - p;
/* find the equals sign, if present */
for (val = sp ; isspace(*val) ; ++val) ;
if (*val == '=')
{
/* skip the '=' and any spaces that follow */
for (++val ; isspace(*val) ; ++val) ;
/* find the end of the value */
for (sp = val ; *sp != '\n' && *sp != '\r' && *sp != '\0' ;
++sp) ;
/* note its length */
vallen = sp - val;
}
else
{
/* there's no value */
val = 0;
}
/* see what we have */
if (id_matches(p, idlen, "id"))
{
/* this directive requires a value */
if (val == 0)
goto val_required;
/* ID's can never be more than four characters long */
if (vallen > 4)
{
printf("%s: line %d: ID too long - no more than four "
"characters are allowed\n", infile, linenum);
}
else
{
/* remember the ID */
memcpy(id, val, vallen);
id[vallen] = '\0';
}
}
else if (id_matches(p, idlen, "ldesc"))
{
/* this directive requires a value */
if (val == 0)
goto val_required;
/* make sure it fits */
if (vallen > sizeof(ldesc) - 1)
{
printf("%s: line %d: LDESC too long - no more than %u "
"characters are allowed\n", infile, linenum,
sizeof(ldesc) - 1);
}
else
{
/* remember the ldesc */
memcpy(ldesc, val, vallen);
ldesc[vallen] = '\0';
}
}
else if (id_matches(p, idlen, "extra_system_info"))
{
/* this directive requires a value */
if (val == 0)
goto val_required;
/* allocate space for it */
sys_info = (char *)malloc(vallen + 1);
memcpy(sys_info, val, vallen);
sys_info[vallen] = '\0';
}
else if (id_matches(p, idlen, "native_default"))
{
unsigned int nval;
int i;
/* this directive requires a value */
if (val == 0)
goto val_required;
/* parse the character value */
if (read_number(&nval, &val, infile, linenum, TRUE))
continue;
/* apply the default */
for (i = 128 ; i < 256 ; ++i)
{
/* set the default only if we haven't mapped this one */
if (!output_map_set[i])
output_map[i] = nval;
}
}
else if (id_matches(p, idlen, "internal_default"))
{
unsigned int nval;
int i;
/* this directive requires a value */
if (val == 0)
goto val_required;
/* parse the character value */
if (read_number(&nval, &val, infile, linenum, TRUE))
continue;
/* apply the default */
for (i = 128 ; i < 256 ; ++i)
{
/* apply the default only if we haven't set this one */
if (!input_map_set[i])
input_map[i] = nval;
}
}
else if (id_matches(p, idlen, "unicode"))
{
/* skip the 'unicode' string and any intervening spaces */
for (p += idlen ; isspace(*p) ; ++p) ;
/* parse the unicode files */
parse_unicode_files(p, strlen(p), infile, linenum,
input_map, input_map_set,
output_map, output_map_set,
&entity_first, &entity_last);
}
else
{
/* unknown directive */
printf("%s: line %d: invalid directive '%.*s'\n",
infile, linenum, idlen, p);
}
/* done processing this line */
continue;
/* come here if the directive needs a value and there isn't one */
val_required:
printf("%s: line %d: '=' required with directive '%.*s'\n",
infile, linenum, idlen, p);
continue;
}
/* check for an entity name */
if (*p == '&')
{
entity_map_t *mapp;
/* skip the '&' */
++p;
/*
* parse the entity - if it succeeds, link the resulting
* mapping entry into our list
*/
mapp = parse_entity(p, infile, linenum);
if (mapp != 0)
{
if (entity_last == 0)
entity_first = mapp;
else
entity_last->nxt = mapp;
entity_last = mapp;
}
/* done */
continue;
}
/* read the first number */
if (read_number(&n1, &p, infile, linenum, TRUE))
continue;
/* determine which operator we have */
if (*p == '<')
{
/* make sure it's "<->" or "<-" */
if (*(p+1) == '-' && *(p+2) != '>')
{
/* skip the operator */
p += 2;
/*
* This is a "from" translation - it only affects the
* output mapping from the internal character set to the
* native character set. Read the second number. There
* is no third number, since we don't want to change the
* input mapping.
*/
if (read_number(&n2, &p, infile, linenum, TRUE))
continue;
/*
* The forward translation is not affected; set only the
* output translation. Note that the first number was
* the output (native) value for the internal index in
* the second number, so move the first value to n3.
*/
n3 = n1;
set_input = FALSE;
}
else if (*(p+1) == '-' && *(p+2) == '>')
{
/* skip it */
p += 3;
/*
* this is a reversible translation, so we only need one
* more number - the third number is implicitly the same
* as the first
*/
n3 = n1;
if (read_number(&n2, &p, infile, linenum, TRUE))
continue;
}
else
{
printf("%s: line %d: invalid operator - expected <->\n",
infile, linenum);
continue;
}
}
else if (*p == '-')
{
/* make sure it's "->" */
if (*(p+1) != '>')
{
printf("%s: line %d: invalid operator - expected ->\n",
infile, linenum);
continue;
}
/* skip it */
p += 2;
/* get the next number */
if (read_number(&n2, &p, infile, linenum, TRUE))
continue;
/*
* we may or may not have a third number - if we have
* another -> operator, read the third number; if we don't,
* the reverse translation is not affected by this entry
*/
if (*p == '-')
{
/* make sure it's "->" */
if (*(p+1) != '>')
{
printf("%s: line %d: invalid operator - expected ->\n",
infile, linenum);
continue;
}
/* skip it */
p += 2;
/* read the third number */
if (read_number(&n3, &p, infile, linenum, TRUE))
continue;
}
else
{
/*
* There's no third number - the reverse translation is
* not affected by this line.
*/
set_output = FALSE;
}
}
else
{
printf("%s: line %d: invalid operator - expected "
"-> or <-> or <-\n",
infile, linenum);
continue;
}
/* make sure we're at the end of the line, and warn if not */
if (*p != '\0' && *p != '\n' && *p != '\r' && *p != '#')
printf("%s: line %d: extra characters at end of line ignored\n",
infile, linenum);
/* set the input mapping, if necessary */
if (set_input)
{
/* warn the user if this value has already been set before */
if (input_map_set[n1])
printf("%s: line %d: warning - native character %u has "
"already been\n mapped to internal value %u\n",
infile, linenum, n1, input_map[n1]);
/* set it */
input_map[n1] = n2;
/* note that it's been set */
input_map_set[n1] = TRUE;
}
/* set the output mapping, if necessary */
if (set_output)
{
/* warn the user if this value has already been set before */
if (output_map_set[n2])
printf("%s: line %d: warning - internal character %u has "
"already been\n mapped to native value %u\n",
infile, linenum, n2, input_map[n2]);
/* set it */
output_map[n2] = n3;
/* note that it's been set */
output_map_set[n2] = TRUE;
}
}
/* we're done with the input file */
osfcls(fp);
/*
* It's an error if we didn't get an ID or LDESC
*/
if (id[0] == '\0')
{
printf("Error: No ID was specified. An ID is required.\n");
os_term(OSEXFAIL);
}
else if (ldesc[0] == '\0')
{
printf("Error: No LDESC was specified. An LDESC is required.\n");
os_term(OSEXFAIL);
}
/* open the output file */
fp = osfopwb(outfile, OSFTCMAP);
if (fp == 0)
{
printf("error: unable to open output file \"%s\"\n", outfile);
os_term(OSEXFAIL);
}
/* write our signature */
if (osfwb(fp, sig, sizeof(sig)))
printf("error writing signature to output file\n");
/* write the ID and LDESC */
len = strlen(ldesc) + 1;
oswp2(lenbuf, len);
if (osfwb(fp, id, 4)
|| osfwb(fp, lenbuf, 2)
|| osfwb(fp, ldesc, len))
printf("error writing ID information to output file\n");
/* write the mapping tables */
if (osfwb(fp, input_map, sizeof(input_map))
|| osfwb(fp, output_map, sizeof(output_map)))
printf("error writing character maps to output file\n");
/* write the extra system information if present */
if (sys_info != 0)
{
/* write it out, with the "SYSI" flag so we know it's there */
len = strlen(sys_info) + 1;
oswp2(lenbuf, len);
if (osfwb(fp, "SYSI", 4)
|| osfwb(fp, lenbuf, 2)
|| osfwb(fp, sys_info, len))
printf("error writing EXTRA_SYSTEM_INFO to output file\n");
/* we're done with the allocated buffer now */
free(sys_info);
}
/*
* Write the entity mapping list, if we have any entities
*/
if (entity_first != 0)
{
entity_map_t *entp;
entity_map_t *next_entity;
char lenbuf[2];
char cvalbuf[2];
/* write out the entity list header */
if (osfwb(fp, "ENTY", 4))
printf("error writing entity marker to output file\n");
/* run through the list, writing out each entry */
for (entp = entity_first ; entp != 0 ; entp = next_entity)
{
/* write out this entity */
oswp2(lenbuf, entp->exp_len);
oswp2(cvalbuf, entp->html_char);
if (osfwb(fp, lenbuf, 2)
|| osfwb(fp, cvalbuf, 2)
|| osfwb(fp, entp->expansion, entp->exp_len))
{
printf("error writing entity mapping to output file\n");
break;
}
/* remember the next entity before we delete this one */
next_entity = entp->nxt;
/* we're done with this entity, so we can delete it now */
free(entp);
}
/*
* write out the end marker, which is just a length marker and
* character marker of zero
*/
oswp2(lenbuf, 0);
oswp2(cvalbuf, 0);
if (osfwb(fp, lenbuf, 2)
|| osfwb(fp, cvalbuf, 2))
printf("error writing entity list end marker to output file\n");
}
/* write the end-of-file marker */
if (osfwb(fp, "$EOF", 4))
printf("error writing end-of-file marker to output file\n");
/* done with the output file */
osfcls(fp);
/* if we're in strict mode, check for unassigned mappings */
if (strict_mode)
{
int in_cnt, out_cnt;
int cnt;
/* count unassigned characters */
for (i = 128, in_cnt = out_cnt = 0 ; i < 256 ; ++i)
{
if (!input_map_set[i])
++in_cnt;
if (!output_map_set[i])
++out_cnt;
}
/* if we have any unassigned native characters, list them */
if (in_cnt != 0)
{
printf("\nUnassigned native -> internal mappings:\n ");
for (i = 128, cnt = 0 ; i < 256 ; ++i)
{
if (!input_map_set[i])
{
/* go to a new line if necessary */
if (cnt >= 16)
{
printf("\n ");
cnt = 0;
}
/* display this item */
printf("%3d ", i);
++cnt;
}
}
printf("\n");
}
/* list unassigned internal characters */
if (out_cnt != 0)
{
printf("\nUnassigned internal -> native mappings:\n ");
for (i = 128, cnt = 0 ; i < 256 ; ++i)
{
if (!output_map_set[i])
{
/* go to a new line if necessary */
if (cnt >= 16)
{
printf("\n ");
cnt = 0;
}
/* display this item */
printf("%3d ", i);
++cnt;
}
}
printf("\n");
}
}
/* success */
os_term(OSEXSUCC);
return OSEXSUCC;
}
/*
* Process an HTML resource list. If 'old_htmlres' is true, it
* indicates that the input file is pointing to an old resource map;
* otherwise, we need to construct a brand new one.
*/
static opdef *prochtmlres(osfildef *fp, osfildef *fpout, opdef *oplist,
int *copyrsc, int *showed_heading, int old_htmlres)
{
opdef *op;
opdef *add_list = 0;
opdef *prev_op;
opdef *next_op;
int found;
char buf[512];
ulong in_entry_cnt;
ulong in_table_siz;
ulong out_hdr_siz;
ulong out_hdr_pos;
ulong i;
ulong out_res_cnt;
ulong out_total_name_len;
ulong rem;
struct idx_t **in_list = 0, *out_list = 0, **p, *cur;
ulong in_res_base, out_res_base;
ulong out_endpos;
/*
* Scan the oplist for an HTML resource. If there aren't any, we
* don't need to modify the HTMLRES list, so tell the caller to copy
* this resource unchanged.
*/
for (op = oplist, found = FALSE ; op != 0 ; op = op->opnxt)
{
/* if this is an HTML resource, note it and stop looking */
if (op->oprestype == RESTYPE_HTML)
{
found = TRUE;
break;
}
}
/*
* If we didn't find any operations on this resource, and we're not
* simply listing resources or we don't have an old resource to
* list, tell the caller to copy it unchanged.
*/
if (!found && (fpout != 0 || !old_htmlres))
{
*copyrsc = TRUE;
return oplist;
}
/* we'll be handling the resource - tell the caller not to copy it */
*copyrsc = FALSE;
/* if there's an old HTMLRES resource, read it */
if (old_htmlres)
{
/* read the index entry count and size */
if (osfrb(fp, buf, 8))
listexit(fp, "unable to read HTMLRES header");
in_entry_cnt = osrp4(buf);
in_table_siz = osrp4(buf + 4);
/* allocate space for pointers to all of the entries */
if (in_entry_cnt != 0)
{
in_list = (struct idx_t **)
malloc(in_entry_cnt * sizeof(struct idx_t *));
if (in_list == 0)
listexit(fp, "unable to allocate space for HTMLRES entries");
}
/* read the index table entries */
for (i = 0, p = in_list ; i < in_entry_cnt ; ++i, ++p)
{
ushort name_siz;
ulong res_siz;
ulong res_ofs;
/* read the entry information */
if (osfrb(fp, buf, 10))
listexit(fp,
"unable to read HTMLRES index table entry (prefix)");
/* get the resource size */
res_ofs = osrp4(buf);
res_siz = osrp4(buf + 4);
/* read the name */
name_siz = osrp2(buf + 8);
if (name_siz > sizeof(buf))
listexit(fp, "name too large in HTMLRES index table entry");
if (osfrb(fp, buf, name_siz))
listexit(fp,
"unable to read HTMLRES index table entry (name)");
/* build this entry */
*p = alloc_idx_entry(res_ofs, res_siz, buf, name_siz, 0, 0);
}
/* if we don't have an output file, list the HTMLRES contents */
if (fpout == 0)
{
/* display all of the entries */
for (i = 0, p = in_list ; i < in_entry_cnt ; ++i, ++p)
show_list_item(showed_heading, "HTML",
(*p)->siz, (*p)->nam, (*p)->namlen);
/* there's no more processing to do */
goto done;
}
/*
* The resources start at the end of the index table - note the
* location of the end of the input table, since it's the base
* address relative to which the resource offsets are stated.
*/
in_res_base = osfpos(fp);
/*
* Go through the resource table in the input file. Find each
* one in the op list. If it's not in the op list, we'll copy
* it to the output file.
*/
for (i = 0, p = in_list ; i < in_entry_cnt ; ++i, ++p)
{
int remove_res = FALSE;
int add_res = FALSE;
/* see if we can find this entry in the op list */
for (prev_op = 0, op = oplist ; op != 0 ;
prev_op = op, op = op->opnxt)
{
/* if this one matches, note it */
if (op->oprestype == RESTYPE_HTML
&& strlen(op->opres) == (*p)->namlen
&& !memicmp(op->opres, (*p)->nam, (*p)->namlen))
{
/*
* if we're adding this resource (not replacing it),
* warn that it's already in the file, and ignore
* this op; if we're removing it or replacing it,
* simply delete this entry from the input list so
* it doesn't get copied to the output.
*/
if (!(op->opflag & OPFDEL))
{
/* warn that the old one will stay */
rscptf("warning: HTML resource \"%s\" already "
"present\n"
" -- old version will be kept (use -replace "
"to replace it)\n", op->opres);
/* remove it from the processing list */
remove_res = TRUE;
}
else
{
/* we are deleting it; see if we're also adding it */
if (op->opflag & OPFADD)
{
/*
* we're replacing this resource - take this
* op out of the main list and put it into
* the add list
*/
remove_res = TRUE;
add_res = TRUE;
/* note the addition */
show_op("replacing", op->opres, strlen(op->opres),
op->oprestype);
}
else
{
/* note the deletion */
show_op("deleting", op->opres, strlen(op->opres),
op->oprestype);
/* just remove it */
remove_res = TRUE;
}
/* get rid of this item from the input list */
free(*p);
*p = 0;
}
/* no need to look further in the operations list */
break;
}
}
/*
* If desired, remove this resource from the main list, and
* add it into the list of resources to add.
*/
if (remove_res)
{
/* unlink it from the main list */
if (prev_op == 0)
oplist = op->opnxt;
else
prev_op->opnxt = op->opnxt;
/* if desired, add it to the additions list */
if (add_res)
{
/* we're adding it - put it in the additions list */
op->opnxt = add_list;
add_list = op;
}
else
{
/* this item has been processed - delete it */
free(op);
}
}
}
}
else
{
/* there are no entries in the input file */
in_entry_cnt = 0;
in_table_siz = 0;
}
/*
* Move all of the HTML resources marked as additions in the main
* operations list into the additions list.
*/
for (prev_op = 0, op = oplist ; op != 0 ; op = next_op)
{
/* note the next op, in case we move this one to the other list */
next_op = op->opnxt;
/*
* if it's an HTML resource to be added, move it to the
* additions list
*/
if (op->oprestype == RESTYPE_HTML && (op->opflag & OPFADD) != 0)
{
/* show what we're doing */
show_op("adding", op->opres, strlen(op->opres), op->oprestype);
/* unlink it from the main list */
if (prev_op == 0)
oplist = op->opnxt;
else
prev_op->opnxt = op->opnxt;
/* add it to the additions list */
op->opnxt = add_list;
add_list = op;
/*
* note that we don't want to advance the 'prev_op' pointer,
* since we just removed this item - the previous item is
* still the same as it was on the last iteration
*/
}
else
{
/*
* we're leaving this op in the original list - it's now the
* previous op in the main list
*/
prev_op = op;
}
}
/*
* Figure out what we'll be putting in the HTMLRES list: we'll add
* each surviving entry from the input file, plus all of the items
* in the add list, plus all of the HTML items in the main list that
* are marked for addition.
*/
out_res_cnt = 0;
out_total_name_len = 0;
/* count input file entries that we're going to copy */
for (i = 0, p = in_list ; i < in_entry_cnt ; ++i, ++p)
{
if (*p != 0)
add_idx_entry(&out_list, &out_res_cnt, &out_total_name_len,
0, 0, (*p)->nam, (*p)->namlen, 0, *p);
}
/*
* Count items in the additions list. Note that every HTML resource
* marked for addition is in the additions list, since we moved all
* such resources out of the main list and into the additions list
* earlier.
*/
for (op = add_list ; op != 0 ; op = op->opnxt)
add_idx_entry(&out_list, &out_res_cnt, &out_total_name_len,
0, 0, op->opres, (ushort)strlen(op->opres), op, 0);
/* write the resource header */
if (osfwb(fpout, "\007HTMLRES\0\0\0\0", 12))
listexit(fp, "unable to write HTMLRES type header");
out_hdr_pos = osfpos(fpout);
/*
* Reserve space in the output file for the index table. We need
* eight bytes for the index table prefix, then ten bytes per entry
* plus the name sizes.
*/
out_hdr_siz = 8 + (10 * out_res_cnt) + out_total_name_len;
/* write the index table prefix */
oswp4(buf, out_res_cnt);
oswp4(buf + 4, out_hdr_siz);
if (osfwb(fpout, buf, 8))
listexit(fp, "unable to write HTMLRES prefix");
/*
* Reserve space for the headers. Don't actually write them yet,
* since we don't know the actual locations and sizes of the
* entries; for now, simply reserve the space, so that we can come
* back here later and write the actual headers. Note that we
* deduct the eight bytes we've already written from the amount of
* filler to put in.
*/
for (rem = out_hdr_siz - 8 ; rem != 0 ; )
{
ulong amt;
/* write out a buffer full */
amt = (rem > sizeof(buf) ? sizeof(buf) : rem);
if (osfwb(fpout, buf, amt))
listexit(fp, "unable to write HTMLRES header");
/* deduct the amount we wrote from the remainder */
rem -= amt;
}
/*
* note the current position in the output file - this is the base
* address of the resources
*/
out_res_base = osfpos(fpout);
/*
* Write the resources.
*/
for (cur = out_list ; cur != 0 ; cur = cur->nxt)
{
/*
* note the current file position as an offset from the resource
* base in the output file - this is the offset that we need to
* store in the index entry for this object
*/
cur->ofs = osfpos(fpout) - out_res_base;
/*
* Copy the resource to the output. If it comes from the input
* file, copy from there, otherwise go out and find the external
* file and copy its contents.
*/
if (cur->src_op != 0)
{
osfildef *fpext;
ulong fsiz;
/* it comes from an external file - open the file */
fpext = osfoprb(cur->src_op->opfile, OSFTGAME);
if (fpext == 0)
{
rscptf("%s: ", cur->src_op->opfile);
errexit("unable to open file", 1);
}
/* figure the size of the file */
osfseek(fpext, 0L, OSFSK_END);
fsiz = osfpos(fpext);
osfseek(fpext, 0L, OSFSK_SET);
/* copy the contents of the external file to the output */
copybytes(fpext, fpout, fsiz);
/* the size is the same as the external file's size */
cur->siz = fsiz;
/* done with the file */
osfcls(fpext);
}
else
{
/*
* it comes from the input resource file - seek to the start
* of the resource in the input file, and copy the data to
* the output file
*/
osfseek(fp, in_res_base + cur->src_idx->ofs, OSFSK_SET);
copybytes(fp, fpout, cur->src_idx->siz);
/* the size is the same as in the input file */
cur->siz = cur->src_idx->siz;
}
}
/* note the current output position - this is the end of the resource */
out_endpos = osfpos(fpout);
/*
* Now that we've written all of the resources and know their actual
* layout in the file, we can go back and write the index table.
*/
osfseek(fpout, out_hdr_pos + 8, OSFSK_SET);
for (cur = out_list ; cur != 0 ; cur = cur->nxt)
{
/* build this object's index table entry */
oswp4(buf, cur->ofs);
oswp4(buf + 4, cur->siz);
oswp2(buf + 8, cur->namlen);
/* write the entry */
if (osfwb(fpout, buf, 10)
|| osfwb(fpout, cur->nam, cur->namlen))
listexit(fp, "unable to write HTML index table entry");
}
/*
* We're done building the resource; now all we need to do is go
* back and write the ending position of the resource in the
* resource header.
*/
osfseek(fpout, out_hdr_pos - 4, OSFSK_SET);
oswp4(buf, out_endpos);
if (osfwb(fpout, buf, 4))
errexit("error writing resource", 1);
/* seek back to the end of the resource in the output file */
osfseek(fpout, out_endpos, OSFSK_SET);
done:
/* if we have an input list, free it */
if (in_list != 0)
{
/* delete all of the entries in the input table */
for (i = 0, p = in_list ; i < in_entry_cnt ; ++i, ++p)
{
/* delete this entry if we haven't already done so */
if (*p != 0)
free(*p);
}
/* delete the input pointer list itself */
free(in_list);
}
/*
* delete everything in the additions list, since we're done with
* them now
*/
for (op = add_list ; op != 0 ; op = next_op)
{
/* note the next entry in the list */
next_op = op->opnxt;
/* delete this entry */
free(op);
}
/* return the op list in its current form */
return oplist;
}
/*
* Open a source file
*/
CTcSrcFile *CTcSrcFile::open_source(const char *filename,
class CResLoader *res_loader,
const char *default_charset,
int *charset_error,
int *default_charset_error)
{
char buf[275];
size_t siz;
osfildef *fp;
long startofs;
CCharmapToUni *mapper;
/* presume we won't find an invalid #charset directive */
*charset_error = FALSE;
/* presume we'll have no problem with the default character set */
*default_charset_error = FALSE;
/*
* open the file in binary mode, so that we can scan the first few
* bytes to see if we can detect the character set from information
* at the beginning of the file
*/
fp = osfoprb(filename, OSFTTEXT);
/* if we couldn't open the file, return failure */
if (fp == 0)
return 0;
/* note the starting offset in the file */
startofs = osfpos(fp);
/* read the first few bytes of the file */
siz = osfrbc(fp, buf, sizeof(buf));
/* check for a 3-byte UTF-8 byte-order marker */
if (siz >= 3 && (uchar)buf[0] == 0xEF && (uchar)buf[1] == 0xBB
&& (uchar)buf[2] == 0xBF)
{
char *p;
size_t rem;
uint skip;
/* skip at least the three-byte marker sequence */
skip = 3;
/*
* check for a #charset marker for utf-8 - this would be redundant,
* but we'll allow it
*/
p = buf + 3;
rem = siz - 3;
if (rem > 9 && memcmp(p, "#charset ", 9) == 0)
{
/* skip spaces */
for (p += 9, rem -= 9 ; rem != 0 && (*p == ' ' || *p == '\t') ;
++p, --rem);
/* check for valid character set markers */
if (rem >= 7 && memicmp(p, "\"utf-8\"", 7) == 0)
{
/* skip the whole sequence */
skip = (p + 7) - buf;
}
else if (rem >= 6 && memicmp(p, "\"utf8\"", 6) == 0)
{
/* skip the whole sequence */
skip = (p + 6) - buf;
}
}
/* seek past the character set markers */
osfseek(fp, startofs + skip, OSFSK_SET);
/* return a new utf-8 decoder */
return new CTcSrcFile(fp, new CCharmapToUniUTF8());
}
/* if we read at least two bytes, try auto-detecting unicode */
if (siz >= 2)
{
CTcSrcFile *srcf;
const char *const *cs_names;
int bige;
/* presume we won't find a byte-order marker */
srcf = 0;
/* if the first bytes are 0xFF 0xFE, it's UCS-2 low-byte first */
if ((unsigned char)buf[0] == 0xFF && (unsigned char)buf[1] == 0xFE)
{
static const char *names[] = { "unicodel", "utf-16le", 0 };
/* create a UCS-2 little-endian reader */
srcf = new CTcSrcFile(fp, new CCharmapToUniUcs2Little());
bige = FALSE;
cs_names = names;
}
/* if the first bytes are 0xFE 0xFF, it's UCS-2 high-byte first */
if ((unsigned char)buf[0] == 0xFE && (unsigned char)buf[1] == 0xFF)
{
static const char *names[] = { "unicodeb", "utf-16be", 0 };
/* create a UCS-2 little-endian reader */
srcf = new CTcSrcFile(fp, new CCharmapToUniUcs2Big());
bige = TRUE;
cs_names = names;
}
/* if we found the byte-order marker, we know the character set */
if (srcf != 0)
{
uint skip;
/* we at least want to skip the byte-order marker */
skip = 2;
/* check to see if we have a '#charset' directive */
if (ucs_str_starts_with(buf + 2, siz - 2, "#charset ",
bige, FALSE))
{
char *p;
size_t rem;
/* scan past following spaces */
for (p = buf + 2 + 18, rem = siz - 2 - 18 ;
rem >= 2 && (ucs_char_eq(p, ' ', bige, FALSE)
|| ucs_char_eq(p, '\t', bige, FALSE)) ;
p += 2, rem -= 2) ;
/* check for a '"' */
if (rem >= 2 && ucs_char_eq(p, '"', bige, FALSE))
{
const char *const *n;
/* skip the '"' */
p += 2;
rem -= 2;
/*
* check for a match to any of the valid names for this
* character set
*/
for (n = cs_names ; *n != 0 ; ++n)
{
/* if it's a match, stop scanning */
if (ucs_str_starts_with(p, rem, *n, bige, TRUE))
{
size_t l;
/* get the length of the name */
l = strlen(*n) * 2;
/* check for a close quote */
if (rem >= l + 2
&& ucs_char_eq(p + l, '"', bige, FALSE))
{
/* skip the name and the quote */
p += l + 2;
rem -= l + 2;
/* skip the source text to this point */
skip = p - buf;
/* stop scanning */
break;
}
}
}
}
}
/* seek just past the character set indicators */
osfseek(fp, startofs + skip, OSFSK_SET);
/* return the file */
return srcf;
}
}
/*
* It doesn't appear to use UCS-2 encoding (at least, the file
* doesn't start with a byte-order sensing sequence). Check to see
* if the file starts with "#charset " in ASCII single-byte
* characters.
*/
if (siz >= 9 && memcmp(buf, "#charset ", 9) == 0)
{
char *p;
size_t rem;
/* skip the #charset string and any following spaces */
for (p = buf + 9, rem = siz - 9 ;
rem > 0 && (*p == ' ' || *p == '\t') ; ++p, --rem) ;
/* make sure we're looking at a '"' */
if (rem != 0 && *p == '"')
{
char *charset_name;
/* skip the open quote */
++p;
--rem;
/* remember where the character set name starts */
charset_name = p;
/*
* find the closing quote, which must occur before a CR or
* LF character
*/
for ( ; rem > 0 && *p != '"' && *p != 10 && *p != 13 ;
++p, --rem) ;
/* make sure we found a matching quote */
if (rem != 0 && *p == '"')
{
/* seek just past the #charset string */
osfseek(fp, startofs + (p - buf) + 1, OSFSK_SET);
/*
* put a null terminator at the end of the character set
* name
*/
*p = '\0';
/* create a mapper */
mapper = CCharmapToUni::load(res_loader, charset_name);
/*
* if that succeeded, return a reader for the mapper;
* otherwise, simply proceed as though no #charset had
* been present, so that we create a default mapper
*/
if (mapper != 0)
{
/* success - return a reader */
return new CTcSrcFile(fp, mapper);
}
else
{
/* tell the caller the #charset was invalid */
*charset_error = TRUE;
}
}
}
}
/*
* we didn't find any sensing codes, so seek back to the start of
* the file
*/
osfseek(fp, startofs, OSFSK_SET);
/*
* We couldn't identify the file's character set based on anything
* in the file, so create a mapper for the given default character
* set. If there's not even a default character set defined, create
* a plain ASCII mapper.
*/
if (default_charset != 0)
mapper = CCharmapToUni::load(res_loader, default_charset);
else
mapper = new CCharmapToUniASCII();
/* check to see if we created a mapper */
if (mapper != 0)
{
/* return a source file reader based on the mapper */
return new CTcSrcFile(fp, mapper);
}
else
{
/*
* we failed to create a mapper for the default character set -
* flag the problem
*/
*default_charset_error = TRUE;
/* close the input file */
osfcls(fp);
/* return failure */
return 0;
}
}
static void listexit(osfildef *fp, char *msg)
{
if (fp != 0)
osfcls(fp);
errexit(msg, 1);
}
/*
* delete the file object
*/
CVmFile::~CVmFile()
{
/* if we still have an underlying OS file, close it */
if (fp_ != 0)
osfcls(fp_);
}
int main(int argc, char **argv)
{
int curarg;
osfildef *fpin;
osfildef *fpout;
char tmpfile[OSFNMAX + 1];
char inbuf[OSFNMAX + 1];
char *p;
char *infile;
char buf[128];
opdef *oplist = (opdef *)0;
opctxdef opctx;
int do_create = FALSE;
/* print main banner */
rscptf("TADS Resource Manager version 2.2.4\n");
rscptf("Copyright (c) 1992, 1999 by Michael J. Roberts. ");
rscptf("All Rights Reserved.\n");
if (argc < 2) usage();
/* set default parsing options */
opctx.restype = RESTYPE_DFLT;
opctx.flag = OPFADD | OPFDEL;
opctx.doing_type = FALSE;
/* scan file options (these come before the filename) */
for (curarg = 1 ; curarg < argc ; ++curarg)
{
/* check if it's an option - if not, stop looking */
if (argv[curarg][0] != '-')
break;
/* check the option */
if (!stricmp(argv[curarg], "-create"))
{
/* note that we want to create the file */
do_create = TRUE;
}
else
{
rscptf("unrecognized file option \"%s\"", argv[curarg]);
errexit("", 1);
}
}
/* get the file name */
infile = argv[curarg++];
strcpy(inbuf, infile);
os_defext(inbuf, "gam");
/* open the file for reading, unless we're creating a new file */
if (do_create)
{
/* creating - we have no input file */
fpin = 0;
}
else if ((fpin = osfoprb(inbuf, OSFTGAME)) == 0)
{
/*
* not creating, so the file must already exist - it doesn't, so
* issue an error and quit
*/
errexit("unable to open resource file", 1);
}
/*
* if no operations are desired, and we're not creating a new file,
* just list the existing file's contents and quit
*/
if (curarg == argc && fpin != 0)
{
rscproc(fpin, (osfildef *)0, 0);
osfcls(fpin);
os_term(OSEXSUCC);
}
/*
* Create an output file. If we're creating a new file, create the
* file named on the command line; otherwise, create a temporary
* file that we'll write to while working and then rename to the
* original input filename after we've finished with the original
* input file.
*/
if (do_create)
{
/* create the new file */
if ((fpout = osfopwb(inbuf, OSFTGAME)) == 0)
errexit("unable to create file", 1);
/* report the creation */
rscptf("\nFile created.\n");
}
else
{
/* generate a temporary filename */
strcpy(tmpfile, inbuf);
for (p = tmpfile + strlen(tmpfile) ; p > tmpfile &&
*(p-1) != ':' && *(p-1) != '\\' && *(p-1) != '/' ; --p);
strcpy(p, "$TADSRSC.TMP");
/* open the temporary file */
if ((fpout = osfopwb(tmpfile, OSFTGAME)) == 0)
errexit("unable to create temporary file", 1);
}
/* see if we need to read a response file */
if (curarg < argc && argv[curarg][0] == '@')
{
osfildef *argfp;
int l;
char *p;
if (!(argfp = osfoprt(argv[curarg]+1, OSFTTEXT)))
errexit("unable to open response file", 1);
for (;;)
{
if (!osfgets(buf, sizeof(buf), argfp)) break;
l = strlen(buf);
if (l && buf[l-1] == '\n') buf[--l] = '\0';
for (p = buf ; t_isspace(*p) ; ++p);
if (!*p) continue;
oplist = addop(oplist, p, &opctx);
}
osfcls(argfp);
}
else
{
for ( ; curarg < argc ; ++curarg)
oplist = addop(oplist, argv[curarg], &opctx);
}
/* process the resources */
oplist = rscproc(fpin, fpout, oplist);
/* make sure they all got processed */
for ( ; oplist != 0 ; oplist = oplist->opnxt)
{
if (!(oplist->opflag & OPFDONE))
rscptf("warning: resource \"%s\" not found\n", oplist->opres);
}
/* close files */
if (fpin != 0)
osfcls(fpin);
if (fpout != 0)
osfcls(fpout);
/*
* if we didn't create a new file, remove the original input file
* and rename the temp file to the original file name
*/
if (!do_create)
{
/* remove the original input file */
if (remove(inbuf))
errexit("error deleting input file", 1);
/* rename the temp file to the output file */
if (rename(tmpfile, inbuf))
errexit("error renaming temporary file", 1);
}
/* success */
os_term(OSEXSUCC);
return OSEXSUCC;
}
int main(int argc, char **argv)
{
osfildef *fp;
const char *fname;
const char *resname;
tads_resinfo res_info;
unsigned long rem;
/* check usage */
if (argc != 3)
{
fprintf(stderr, "usage: resfind <filename> <resname>\n");
exit(2);
}
/* get the arguments */
fname = argv[1];
resname = argv[2];
/* open the file */
if ((fp = osfoprb(fname, OSFTGAME)) == 0
&& (fp = osfoprb(fname, OSFTT3IMG)) == 0)
{
fprintf(stderr, "unable to open file \"%s\"\n", fname);
exit(2);
}
/* find the resource */
if (!tads_find_resource_fp(fp, resname, &res_info))
{
fprintf(stderr, "unable to find resource \"%s\"\n", resname);
osfcls(fp);
exit(1);
}
/* seek to the resource */
osfseek(fp, res_info.seek_pos, OSFSK_SET);
/* copy the resource to standard output */
for (rem = res_info.siz ; rem != 0 ; )
{
char buf[1024];
size_t cur;
/*
* read up to the buffer size or up to the resource size
* remaining, whichever is smaller
*/
cur = sizeof(buf);
if (cur > rem)
cur = (size_t)rem;
/* read the chunk */
if (osfrb(fp, buf, cur))
{
fprintf(stderr, "error reading %u bytes from file\n",
(unsigned)cur);
osfcls(fp);
exit(2);
}
/* copy the chunk to standard output */
fwrite(buf, cur, 1, stdout);
/* deduct the amount we just read from the size remaining */
rem -= cur;
}
/* done with the file - close it */
osfcls(fp);
/* success */
exit(0);
return 0;
}
/*
* Perform base initialization. This is an internal routine called only
* by higher-level initialization routines; we perform all of the
* generic, configuration-independent initialization.
*/
void vm_init_base(vm_globals **vmg, const vm_init_options *opts)
{
vm_globals *vmg__;
char disp_mapname[32];
char filename_mapname[32];
char filecont_mapname[32];
CResLoader *map_loader;
int disp_map_err;
const char *charset = opts->charset;
/*
* Allocate globals according to build-time configuration, then
* assign the global pointer to a local named vmg__. This will
* ensure that the globals are accessible for all of the different
* build-time configurations.
*/
vmg__ = *vmg = vmglob_alloc();
/* initialize the error stack */
err_init(VM_ERR_STACK_BYTES);
/* get the character map loader from the host interface */
map_loader = opts->hostifc->get_cmap_res_loader();
/* if an external message set hasn't been loaded, try loading one */
if (!err_is_message_file_loaded() && map_loader != 0)
{
osfildef *fp;
/* try finding a message file */
fp = map_loader->open_res_file(VM_ERR_MSG_FNAME, 0,
VM_ERR_MSG_RESTYPE);
if (fp != 0)
{
/*
* try loading it - if that fails, we'll just be left with
* the built-in messages, so we won't have lost anything for
* trying
*/
err_load_vm_message_file(fp);
/* we're done with the file */
osfcls(fp);
}
}
/* remember the host interface */
G_host_ifc = opts->hostifc;
/* initialize the system debug log file name */
char path[OSFNMAX];
opts->hostifc->get_special_file_path(path, sizeof(path), OS_GSP_LOGFILE);
os_build_full_path(G_syslogfile, sizeof(G_syslogfile),
path, "tadslog.txt");
/* we don't have a resource loader for program resources yet */
G_res_loader = 0;
/* create the object table */
VM_IF_ALLOC_PRE_GLOBAL(G_obj_table = new CVmObjTable());
G_obj_table->init(vmg0_);
/*
* Create the memory manager. Empirically, our hybrid heap allocator
* is faster than the standard C++ run-time library's allocator on many
* platforms, so use it instead of hte basic 'malloc' allocator.
*/
G_varheap = new CVmVarHeapHybrid(G_obj_table);
// G_varheap = new CVmVarHeapMalloc(); to use the system 'malloc' instead
G_mem = new CVmMemory(vmg_ G_varheap);
/* create the undo manager */
G_undo = new CVmUndo(VM_UNDO_MAX_RECORDS, VM_UNDO_MAX_SAVEPTS);
/* create the metafile and function set tables */
G_meta_table = new CVmMetaTable(5);
G_bif_table = new CVmBifTable(5);
/* initialize the metaclass registration tables */
vm_register_metaclasses();
/* initialize the TadsObject class */
CVmObjTads::class_init(vmg0_);
/* create the byte-code interpreter */
VM_IFELSE_ALLOC_PRE_GLOBAL(
G_interpreter = new CVmRun(VM_STACK_SIZE, vm_init_stack_reserve()),
G_interpreter->init());
/* presume we won't create debugger information */
G_debugger = 0;
G_srcf_table = 0;
/* presume we don't have a network configuration */
G_net_config = 0;
/* initialize the debugger if present */
vm_init_debugger(vmg0_);
/* create the source file table */
G_srcf_table = new CVmSrcfTable();
/* create the pre-defined object mapper */
VM_IFELSE_ALLOC_PRE_GLOBAL(G_predef = new CVmPredef, G_predef->reset());
/* presume we're in normal execution mode (not preinit) */
G_preinit_mode = FALSE;
/* allocate the TADS intrinsic function set's globals */
G_bif_tads_globals = new CVmBifTADSGlobals(vmg0_);
/* allocate the BigNumber register cache */
G_bignum_cache = new CVmBigNumCache(32);
/* no image loader yet */
G_image_loader = 0;
/*
* If the caller explicitly specified a character set, use it.
* Otherwise, ask the OS layer for the default character set we
* should use.
*/
if (charset == 0)
{
/* the user did not specify a mapping - ask the OS for the default */
os_get_charmap(disp_mapname, OS_CHARMAP_DISPLAY);
/* use the name we got from the OS */
charset = disp_mapname;
/* there's no explicit global character set name setting to store */
G_disp_cset_name = 0;
}
else
{
/* save the global character set name */
G_disp_cset_name = lib_copy_str(charset);
}
/* create the display character maps */
G_cmap_from_ui = CCharmapToUni::load(map_loader, charset);
G_cmap_to_ui = CCharmapToLocal::load(map_loader, charset);
/* create the filename character maps */
os_get_charmap(filename_mapname, OS_CHARMAP_FILENAME);
G_cmap_from_fname = CCharmapToUni::load(map_loader, filename_mapname);
G_cmap_to_fname = CCharmapToLocal::load(map_loader, filename_mapname);
/* create the file-contents character maps */
os_get_charmap(filecont_mapname, OS_CHARMAP_FILECONTENTS);
G_cmap_from_file = CCharmapToUni::load(map_loader, filecont_mapname);
G_cmap_to_file = CCharmapToLocal::load(map_loader, filecont_mapname);
/*
* If the caller specified a separate log-file character set, create
* the mapping. Otherwise, just use the to-file mapper for log files.
*/
if (opts->log_charset != 0)
{
/* load the specified log file output mapping */
G_cmap_to_log = CCharmapToLocal::load(map_loader, opts->log_charset);
}
else
{
/* no log file mapping is specified, so use the generic file map */
if ((G_cmap_to_log = G_cmap_to_file) != 0)
G_cmap_to_log->add_ref();
}
/* make a note of whether we had any problems loading the maps */
disp_map_err = (G_cmap_from_ui == 0 || G_cmap_to_ui == 0);
/* if we failed to create any of the maps, load defaults */
if (G_cmap_from_ui == 0)
G_cmap_from_ui = CCharmapToUni::load(map_loader, "us-ascii");
if (G_cmap_to_ui == 0)
G_cmap_to_ui = CCharmapToLocal::load(map_loader, "us-ascii");
if (G_cmap_from_fname == 0)
G_cmap_from_fname = CCharmapToUni::load(map_loader, "us-ascii");
if (G_cmap_to_fname == 0)
G_cmap_to_fname = CCharmapToLocal::load(map_loader, "us-ascii");
if (G_cmap_from_file == 0)
G_cmap_from_file = CCharmapToUni::load(map_loader, "us-ascii");
if (G_cmap_to_file == 0)
G_cmap_to_file = CCharmapToLocal::load(map_loader, "us-ascii");
if (G_cmap_to_log == 0)
G_cmap_to_log = CCharmapToLocal::load(map_loader, "us-ascii");
/* create the primary console */
G_console = opts->clientifc->create_console(VMGLOB_ADDR);
/*
* if we had any trouble opening the display character mapping file,
* make a note that we are using a default mapping
*/
if (disp_map_err)
{
const char *msg;
char buf[256];
/* get the message */
msg = err_get_msg(vm_messages, vm_message_count,
VMERR_NO_CHARMAP_FILE, TRUE);
/* format it */
sprintf(buf, msg, charset);
/* display it */
opts->clientifc->display_error(VMGLOB_ADDR, 0, buf, TRUE);
}
}
/*
* Given a saved game file, try to identify the game file that created the
* saved game.
*/
static int vm_get_game_file_from_savefile(const char *savefile,
char *fname, size_t fnamelen)
{
osfildef *fp;
char buf[128];
int ret;
size_t len;
/* open the saved game file */
fp = osfoprb(savefile, OSFTBIN);
/* if that failed, there's no way to read the game file name */
if (fp == 0)
return FALSE;
/* read the first few bytes */
if (osfrb(fp, buf, 16))
{
/*
* we couldn't even read that much, so it must not really be a
* saved game file
*/
ret = FALSE;
}
else
{
/* check for a saved game signature we recognize */
if (memcmp(buf, "TADS2 save/g\012\015\032\000", 16) == 0)
{
/*
* It's a TADS 2 saved game with embedded .GAM file
* information. The filename immediately follows the signature
* (the 15 bytes we just matched), with a two-byte length
* prefix. Seek to the length prefix and read it.
*/
osfseek(fp, 16, OSFSK_SET);
osfrb(fp, buf, 2);
len = osrp2(buf);
/* limit the read length to our caller's available buffer */
if (len > fnamelen - 1)
len = fnamelen - 1;
/* read the filename and null-terminate it */
osfrb(fp, fname, len);
fname[len] = '\0';
/* success */
ret = TRUE;
}
else if (memcmp(buf, "T3-state-v", 10) == 0)
{
/*
* It's a T3 saved state file. The image filename is always
* embedded in this type of file, so seek back to the start of
* the file and read the filename.
*
* Note that restore_get_image() returns zero on success, so we
* want to return true if and only if that routine returns
* zero.
*/
osfseek(fp, 0, OSFSK_SET);
ret = (CVmSaveFile::restore_get_image(fp, fname, fnamelen) == 0);
}
else
{
/*
* it's not a signature we know, so it must not be a saved
* state file (at least not one we can deal with)
*/
ret = FALSE;
}
}
/* we're done with the file now, so close it */
osfcls(fp);
/* return the result */
return ret;
}
int TADS2::cmap_load_internal(const char *filename) {
osfildef *fp;
static char sig1[] = CMAP_SIG_S100;
char buf[256];
uchar lenbuf[2];
size_t len;
int sysblk;
// if there's no mapping file, use the default mapping
if (filename == 0) {
// initialize with the default mapping
cmap_init_default();
// return success
return 0;
}
// open the file
fp = osfoprb(filename, OSFTCMAP);
if (fp == 0)
return 1;
// check the signature
if (osfrb(fp, buf, sizeof(sig1))
|| memcmp(buf, sig1, sizeof(sig1)) != 0) {
osfcls(fp);
return 2;
}
// load the ID
G_cmap_id[4] = '\0';
if (osfrb(fp, G_cmap_id, 4)) {
osfcls(fp);
return 3;
}
// load the long description
if (osfrb(fp, lenbuf, 2)
|| (len = osrp2(lenbuf)) > sizeof(G_cmap_ldesc)
|| osfrb(fp, G_cmap_ldesc, len)) {
osfcls(fp);
return 4;
}
// load the two tables - input, then output
if (osfrb(fp, G_cmap_input, sizeof(G_cmap_input))
|| osfrb(fp, G_cmap_output, sizeof(G_cmap_output))) {
osfcls(fp);
return 5;
}
// read the next section header
if (osfrb(fp, buf, 4)) {
osfcls(fp);
return 6;
}
// if it's "SYSI", read the system information string
if (!memcmp(buf, "SYSI", 4)) {
// read the length prefix, then the string
if (osfrb(fp, lenbuf, 2)
|| (len = osrp2(lenbuf)) > sizeof(buf)
|| osfrb(fp, buf, len)) {
osfcls(fp);
return 7;
}
// we have a system information block
sysblk = true;
} else {
// there's no system information block
sysblk = false;
}
/*
* call the OS code, so that it can do any system-dependent
* initialization for the new character mapping
*/
os_advise_load_charmap(G_cmap_id, G_cmap_ldesc, sysblk ? buf : "");
// read the next section header
if (sysblk && osfrb(fp, buf, 4)) {
osfcls(fp);
return 8;
}
// see if we have an entity list
if (!memcmp(buf, "ENTY", 4)) {
// read the entities
for (;;) {
unsigned int cval;
char expansion[CMAP_MAX_ENTITY_EXPANSION];
// read the next item's length and character value
if (osfrb(fp, buf, 4)) {
osfcls(fp);
return 9;
}
// decode the values
len = osrp2(buf);
cval = osrp2(buf+2);
// if we've reached the zero marker, we're done
if (len == 0 && cval == 0)
break;
// read the string
if (len > CMAP_MAX_ENTITY_EXPANSION
|| osfrb(fp, expansion, len)) {
osfcls(fp);
return 10;
}
// tell the output code about the expansion
tio_set_html_expansion(cval, expansion, len);
}
}
/*
* ignore anything else we find - if the file format is updated to
* include extra information in the future, and this old code tries
* to load an updated file, we'll just ignore the new information,
* which should always be placed after the "SYSI" block (if present)
* to ensure compatibility with past versions (such as this code)
*/
// no problems - close the file and return success
osfcls(fp);
return 0;
}
/* write game to binary file */
static void fiowrt1(mcmcxdef *mctx, voccxdef *vctx, tokcxdef *tokctx,
tokthdef *tab, uchar *fmts, uint fmtl, osfildef *fp,
uint flags, objnum preinit, int extc, uint prpcnt,
char *filever)
{
int i;
int j;
int k;
uchar buf[TOKNAMMAX + 50];
errcxdef *ec = vctx->voccxerr;
ulong fpos;
int obj;
vocidef ***vpg;
vocidef **v;
objnum *sc;
vocdef *voc;
vocwdef *vw;
vocdef **vhsh;
struct tm *tblock;
time_t timer;
fiowcxdef cbctx; /* callback context for toktheach */
uint xor_seed = 63;
uint xor_inc = 64;
char *vsnhdr;
uint vsnlen;
char fastnamebuf[OSFNMAX]; /* fast-load record temp file name */
long flag_seek;
/* generate appropriate file version */
switch(filever[0])
{
case 'a': /* generate .GAM compatible with pre-2.0.15 runtimes */
vsnhdr = FIOVSNHDR2;
vsnlen = sizeof(FIOVSNHDR2);
xor_seed = 17; /* use old xor values */
xor_inc = 29;
break;
case 'b': /* generate 2.0.15+ format */
vsnhdr = FIOVSNHDR3;
vsnlen = sizeof(FIOVSNHDR3);
break;
case 'c':
case '*': /* current version */
vsnhdr = FIOVSNHDR;
vsnlen = sizeof(FIOVSNHDR);
break;
default:
errsig(ec, ERR_WRTVSN);
}
/* write file header and version header */
if (osfwb(fp, FIOFILHDR, sizeof(FIOFILHDR))
|| osfwb(fp, vsnhdr, vsnlen))
errsig(ec, ERR_WRTGAM);
/*
* write the flags - remember where we wrote it in case we need to
* change the flags later
*/
flag_seek = osfpos(fp);
oswp2(buf, flags);
if (osfwb(fp, buf, 2))
errsig(ec, ERR_WRTGAM);
/* write the timestamp */
timer = time(NULL);
tblock = localtime(&timer);
strcpy(vctx->voccxtim, asctime(tblock));
if (osfwb(fp, vctx->voccxtim, (size_t)26))
errsig(ec, ERR_WRTGAM);
/* write xor parameters if generating post 2.0.15 .GAM file */
if (filever[0] != 'a')
{
fpos = fiowhd(fp, ec, "\003XSI");
buf[0] = xor_seed;
buf[1] = xor_inc;
if (osfwb(fp, buf, 2)) errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
}
/* write count of external functions */
if (extc)
{
fpos = fiowhd(fp, ec, "\006EXTCNT");
oswp2(buf, extc); /* write the external function count */
if (osfwb(fp, buf, 2)) errsig(ec, ERR_WRTGAM);
/* write XFCN-seek-location header if post 2.0.15 file version */
if (filever[0] != 'a')
{
oswp4(buf, 0); /* placeholder - TADSRSC sets this up later */
if (osfwb(fp, buf, 4)) errsig(ec, ERR_WRTGAM);
}
/* close the resource */
fiowcls(fp, ec, fpos);
}
/*
* write the character set information, if a character set was
* specified
*/
if (G_cmap_id[0] != '\0')
{
size_t len;
/* this is not allowed with explicit file versions a, b, or c */
if (filever[0] == 'a' || filever[0] == 'b' || filever[0] == 'c')
errsig(ec, ERR_VNOCTAB);
/* write out the CHRSET resource header */
fpos = fiowhd(fp, ec, "\006CHRSET");
/* write out the ID and LDESC of the internal character set */
len = strlen(G_cmap_ldesc) + 1;
oswp2(buf, len);
if (osfwb(fp, G_cmap_id, 4)
|| osfwb(fp, buf, 2)
|| osfwb(fp, G_cmap_ldesc, len))
errsig(ec, ERR_WRTGAM);
/* close the resource */
fiowcls(fp, ec, fpos);
}
/* write OBJ resource header */
fpos = fiowhd(fp, ec, "\003OBJ");
/* set up the symbol table callback context for writing the objects */
cbctx.fiowcxmem = mctx;
cbctx.fiowcxerr = ec;
cbctx.fiowcxfp = fp;
cbctx.fiowcxund = 0;
cbctx.fiowcxseed = xor_seed;
cbctx.fiowcxinc = xor_inc;
cbctx.fiowcxdebug = (flags & FIOFSYM);
if (flags & FIOFFAST)
{
/* try creating the temp file */
cbctx.fiowcxffp = os_create_tempfile(0, fastnamebuf);
/* if that failed, we don't have a fast-load table after all */
if (cbctx.fiowcxffp == 0)
{
long curpos;
char flag_buf[2];
/* clear the fast-load flag */
flags &= ~FIOFFAST;
/*
* go back to the flags we wrote to the .gam file header, and
* re-write the new flags without the fast-load bit - since
* we're not going to write a fast-load table, we don't want
* readers thinking they're going to find one
*/
/* first, remember where we are right now */
curpos = osfpos(fp);
/* seek back to the flags and re-write the new flags */
osfseek(fp, flag_seek, OSFSK_SET);
oswp2(flag_buf, flags);
if (osfwb(fp, flag_buf, 2))
errsig(ec, ERR_WRTGAM);
/* seek back to where we started */
osfseek(fp, curpos, OSFSK_SET);
}
}
else
cbctx.fiowcxffp = (osfildef *)0;
cbctx.fiowcxflg = flags;
/* go through symbol table, and write each object */
toktheach((toktdef *)tab, fiowrtobj, &cbctx);
/* also write all objects created with 'new' */
for (vpg = vctx->voccxinh, i = 0 ; i < VOCINHMAX ; ++vpg, ++i)
{
objnum obj;
if (!*vpg) continue;
for (v = *vpg, obj = (i << 8), j = 0 ; j < 256 ; ++v, ++obj, ++j)
{
/* if the object was dynamically allocated, write it out */
if (*v && (*v)->vociflg & VOCIFNEW)
{
toksdef t;
/* clear the 'new' flag, as this is a static object now */
(*v)->vociflg &= ~VOCIFNEW;
/* set up a toksdef, and write it out */
t.tokstyp = TOKSTOBJ;
t.toksval = obj;
fiowrtobj(&cbctx, &t);
}
}
}
/* close the resource */
fiowcls(fp, ec, fpos);
/* copy fast-load records to output file if applicable */
if (cbctx.fiowcxffp)
{
osfildef *fp2 = cbctx.fiowcxffp;
char copybuf[1024];
ulong len;
ulong curlen;
/* start with resource header for fast-load records */
fpos = fiowhd(fp, ec, "\003FST");
/* get length of temp file, then rewind it */
len = osfpos(fp2);
osfseek(fp2, 0L, OSFSK_SET);
/* copy the whole thing to the output file */
while (len)
{
curlen = (len > sizeof(copybuf) ? sizeof(copybuf) : len);
if (osfrb(fp2, copybuf, (size_t)curlen)
|| osfwb(fp, copybuf, (size_t)curlen))
errsig(ec, ERR_WRTGAM);
len -= curlen;
}
/* close the fast-load resource */
fiowcls(fp, ec, fpos);
/* close and delete temp file */
osfcls(fp2);
osfdel_temp(fastnamebuf);
}
/* write vocabulary inheritance records - start with header */
fpos = fiowhd(fp, ec, "\003INH");
/* go through inheritance records and write to file */
for (vpg = vctx->voccxinh, i = 0 ; i < VOCINHMAX ; ++vpg, ++i)
{
if (!*vpg) continue;
for (v = *vpg, obj = (i << 8), j = 0 ; j < 256 ; ++v, ++obj, ++j)
{
if (*v)
{
buf[0] = (*v)->vociflg;
oswp2(buf + 1, obj);
oswp2(buf + 3, (*v)->vociloc);
oswp2(buf + 5, (*v)->vociilc);
oswp2(buf + 7, (*v)->vocinsc);
for (k = 0, sc = (*v)->vocisc ; k < (*v)->vocinsc ; ++sc, ++k)
{
if (k + 9 >= sizeof(buf)) errsig(ec, ERR_FIOMSC);
oswp2(buf + 9 + (k << 1), (*sc));
}
if (osfwb(fp, buf, 9 + (2 * (*v)->vocinsc)))
errsig(ec, ERR_WRTGAM);
}
}
}
/* close resource */
fiowcls(fp, ec, fpos);
/* write format strings */
if (fmtl)
{
fpos = fiowhd(fp, ec, "\006FMTSTR");
oswp2(buf, fmtl);
if (flags & FIOFCRYPT) fioxor(fmts, fmtl, xor_seed, xor_inc);
if (osfwb(fp, buf, 2) || osfwb(fp, fmts, fmtl))
errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
}
/* write preinit if preinit object was specified */
if (flags & FIOFPRE)
{
fpos = fiowhd(fp, ec, "\007PREINIT");
oswp2(buf, preinit);
if (osfwb(fp, buf, 2)) errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
}
/* write required objects out of voccxdef */
fpos = fiowhd(fp, ec, "\003REQ");
fiowrq(ec, fp, vctx->voccxme);
fiowrq(ec, fp, vctx->voccxvtk);
fiowrq(ec, fp, vctx->voccxstr);
fiowrq(ec, fp, vctx->voccxnum);
fiowrq(ec, fp, vctx->voccxprd);
fiowrq(ec, fp, vctx->voccxvag);
fiowrq(ec, fp, vctx->voccxini);
fiowrq(ec, fp, vctx->voccxpre);
fiowrq(ec, fp, vctx->voccxper);
fiowrq(ec, fp, vctx->voccxprom);
fiowrq(ec, fp, vctx->voccxpdis);
fiowrq(ec, fp, vctx->voccxper2);
fiowrq(ec, fp, vctx->voccxpdef);
fiowrq(ec, fp, vctx->voccxpask);
fiowrq(ec, fp, vctx->voccxppc);
fiowrq(ec, fp, vctx->voccxpask2);
fiowrq(ec, fp, vctx->voccxperp);
fiowrq(ec, fp, vctx->voccxpostprom);
fiowrq(ec, fp, vctx->voccxinitrestore);
fiowrq(ec, fp, vctx->voccxpuv);
fiowrq(ec, fp, vctx->voccxpnp);
fiowrq(ec, fp, vctx->voccxpostact);
fiowrq(ec, fp, vctx->voccxendcmd);
fiowrq(ec, fp, vctx->voccxprecmd);
fiowrq(ec, fp, vctx->voccxpask3);
fiowrq(ec, fp, vctx->voccxpre2);
fiowrq(ec, fp, vctx->voccxpdef2);
fiowcls(fp, ec, fpos);
/* write compound words */
if (vctx->voccxcpl)
{
fpos = fiowhd(fp, ec, "\004CMPD");
oswp2(buf, vctx->voccxcpl);
if (flags & FIOFCRYPT)
fioxor((uchar *)vctx->voccxcpp, (uint)vctx->voccxcpl,
xor_seed, xor_inc);
if (osfwb(fp, buf, 2)
|| osfwb(fp, vctx->voccxcpp, (uint)vctx->voccxcpl))
errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
}
/* write special words */
if (vctx->voccxspl)
{
fpos = fiowhd(fp, ec, "\010SPECWORD");
oswp2(buf, vctx->voccxspl);
if (flags & FIOFCRYPT)
fioxor((uchar *)vctx->voccxspp, (uint)vctx->voccxspl,
xor_seed, xor_inc);
if (osfwb(fp, buf, 2)
|| osfwb(fp, vctx->voccxspp, (uint)vctx->voccxspl))
errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
}
/* write vocabulary */
fpos = fiowhd(fp, ec, "\003VOC");
/* go through each hash chain */
for (i = 0, vhsh = vctx->voccxhsh ; i < VOCHASHSIZ ; ++i, ++vhsh)
{
/* go through each word in this hash chain */
for (voc = *vhsh ; voc ; voc = voc->vocnxt)
{
/* encrypt the word if desired */
if (flags & FIOFCRYPT)
fioxor(voc->voctxt, (uint)(voc->voclen + voc->vocln2),
xor_seed, xor_inc);
/* go through each object relation attached to the word */
for (vw = vocwget(vctx, voc->vocwlst) ; vw ;
vw = vocwget(vctx, vw->vocwnxt))
{
/* clear the 'new' flag, as this is a static object now */
vw->vocwflg &= ~VOCFNEW;
/* write out this object relation */
oswp2(buf, voc->voclen);
oswp2(buf+2, voc->vocln2);
oswp2(buf+4, vw->vocwtyp);
oswp2(buf+6, vw->vocwobj);
oswp2(buf+8, vw->vocwflg);
if (osfwb(fp, buf, 10)
|| osfwb(fp, voc->voctxt, voc->voclen + voc->vocln2))
errsig(ec, ERR_WRTGAM);
}
}
}
fiowcls(fp, ec, fpos);
/* write the symbol table, if desired */
if (flags & FIOFSYM)
{
fpos = fiowhd(fp, ec, "\006SYMTAB");
toktheach((toktdef *)tab, fiowrtsym, &cbctx);
/* indicate last symbol with a length of zero */
buf[0] = 0;
if (osfwb(fp, buf, 4)) errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
}
/* write line source chain, if desired */
if ((flags & (FIOFLIN | FIOFLIN2)) != 0 && vctx->voccxrun->runcxdbg != 0)
{
lindef *lin;
/* write the SRC header */
fpos = fiowhd(fp, ec, "\003SRC");
/* write the line records */
for (lin = vctx->voccxrun->runcxdbg->dbgcxlin ; lin ;
lin = lin->linnxt)
{
/* write this record */
if (linwrt(lin, fp))
errsig(ec, ERR_WRTGAM);
}
/* done with this section */
fiowcls(fp, ec, fpos);
/*
* if we have new-style line records, put a SRC2 header (with no
* block contents) in the file, so that the debugger realizes
* that it has new-style line records (with line numbers rather
* than seek offsets)
*/
if ((flags & FIOFLIN2) != 0)
{
fpos = fiowhd(fp, ec, "\004SRC2");
fiowcls(fp, ec, fpos);
}
}
/* if writing a precompiled header, write some more information */
if (flags & FIOFBIN)
{
/* write property count */
fpos = fiowhd(fp, ec, "\006PRPCNT");
oswp2(buf, prpcnt);
if (osfwb(fp, buf, 2)) errsig(ec, ERR_WRTGAM);
fiowcls(fp, ec, fpos);
/* write preprocessor symbol table */
fpos = fiowhd(fp, ec, "\006TADSPP");
tok_write_defines(tokctx, fp, ec);
fiowcls(fp, ec, fpos);
}
/* write end-of-file resource header */
(void)fiowhd(fp, ec, "\004$EOF");
osfcls(fp);
/* if there are undefined functions/objects, signal an error */
if (cbctx.fiowcxund) errsig(ec, ERR_UNDEF);
}