static void do_extract_file(deark *c, lctx *d, de_int64 dir_pos,
de_byte filetype_c64s, de_byte filetype)
{
de_int64 load_addr;
de_int64 end_addr;
de_int64 offset;
dbuf *f = NULL;
de_int64 payload_size; // = file_size-2
de_ucstring *fname = NULL;
de_int64 fname_len;
de_int64 i;
de_int64 fnpos;
de_finfo *fi = NULL;
load_addr = de_getui16le(dir_pos+2);
end_addr = de_getui16le(dir_pos+4);
offset = de_getui32le(dir_pos+8);
de_dbg(c, "load_addr=%d end_addr=%d offset=%d\n", (int)load_addr,
(int)end_addr, (int)offset);
// File name at pos+16
fnpos = dir_pos+16;
// Find the length of the (space-padded) filename.
fname_len = 0;
for(i=15; i>=0; i--) {
if(de_getbyte(fnpos+i)!=' ') {
fname_len = i+1;
break;
}
}
de_dbg2(c, "filename length: %d\n", (int)fname_len);
fname = ucstring_create(c);
dbuf_read_to_ucstring(c->infile, fnpos, fname_len, fname, 0, DE_ENCODING_PETSCII);
de_dbg(c, "filename: \"%s\"\n", ucstring_get_printable_sz(fname));
ucstring_append_sz(fname, ".prg", DE_ENCODING_ASCII);
fi = de_finfo_create(c);
de_finfo_set_name_from_ucstring(c, fi, fname);
fi->original_filename_flag = 1;
payload_size = end_addr - load_addr;
if(payload_size < 0) {
// TODO: Try to support files that don't have end_addr set properly.
de_err(c, "This type of T64 file is not supported.\n");
goto done;
}
f = dbuf_create_output_file(c, NULL, fi, 0);
dbuf_copy(c->infile, dir_pos+2, 2, f);
dbuf_copy(c->infile, offset, payload_size, f);
done:
dbuf_close(f);
de_finfo_destroy(c, fi);
ucstring_destroy(fname);
}
static void handle_text(deark *c, lctx *d, const struct ds_info *dsi,
de_int64 pos, de_int64 len)
{
int encoding;
de_ucstring *s = NULL;
s = ucstring_create(c);
encoding = get_ds_encoding(c, d, dsi->recnum);
if(encoding==DE_ENCODING_UNKNOWN)
encoding = DE_ENCODING_ASCII;
dbuf_read_to_ucstring(c->infile, pos, len, s, 0, encoding);
de_dbg(c, "%s: \"%s\"\n", dsi->dsname, ucstring_get_printable_sz_n(s, 300));
ucstring_destroy(s);
}
static void do_woz_INFO(deark *c, struct de_iffctx *ictx,
const struct de_iffchunkctx *chunkctx)
{
u8 b;
i64 n;
i64 pos = chunkctx->dpos;
lctx *d = ictx->userdata;
de_ucstring *s = NULL;
if(chunkctx->dlen<37) return;
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "INFO chunk version: %d", (int)b);
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "disk type: %d (%s)", (int)b, get_woz_disk_type_name(b));
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "write protected: %d", (int)b);
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "synchronized: %d", (int)b);
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "cleaned: %d", (int)b);
s = ucstring_create(c);
dbuf_read_to_ucstring(ictx->f, pos, 32, s, 0, DE_ENCODING_UTF8);
ucstring_strip_trailing_spaces(s);
de_dbg(c, "creator: \"%s\"", ucstring_getpsz(s));
pos += 32;
if(d->wozver<'2') goto done;
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "disk sides: %d", (int)b);
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "boot sector format: %d", (int)b);
b = dbuf_getbyte_p(ictx->f, &pos);
de_dbg(c, "optimal bit timing: %d", (int)b);
n = dbuf_getu16le_p(ictx->f, &pos);
de_dbg(c, "compatible hardware: %d", (int)n);
n = dbuf_getu16le_p(ictx->f, &pos);
de_dbg(c, "required RAM: %dK", (int)n);
n = dbuf_getu16le_p(ictx->f, &pos);
de_dbg(c, "largest track: %d blocks", (int)n);
done:
ucstring_destroy(s);
}
// Caption/abstract
static void handle_2_120(deark *c, lctx *d, const struct ds_info *dsi,
de_int64 pos, de_int64 len)
{
de_ucstring *s = NULL;
dbuf *outf = NULL;
int encoding;
const char *fntoken;
if(c->extract_level<2) {
handle_text(c, d, dsi, pos, len);
goto done;
}
// FIXME: There is currently no way to extract IPTC captions to files,
// except when reading a raw IPTC file. If IPTC is embedded in some other
// file (as it usually is), then the -a option will extract the entire
// IPTC data, and we will never get here.
fntoken = "caption.txt";
encoding = get_ds_encoding(c, d, dsi->recnum);
if(encoding==DE_ENCODING_UNKNOWN) {
// If the encoding is unknown, copy the raw bytes.
dbuf_create_file_from_slice(c->infile, pos, len, fntoken,
NULL, DE_CREATEFLAG_IS_AUX);
goto done;
}
// If the encoding is known, convert to UTF-8.
s = ucstring_create(c);
dbuf_read_to_ucstring(c->infile, pos, len, s, 0, encoding);
outf = dbuf_create_output_file(c, fntoken, NULL, DE_CREATEFLAG_IS_AUX);
ucstring_write_as_utf8(c, s, outf, 1);
done:
if(outf) dbuf_close(outf);
if(s) ucstring_destroy(s);
}
static void do_read_extension_area(deark *c, lctx *d, i64 pos)
{
i64 ext_area_size;
i64 k;
int has_date;
de_ucstring *s = NULL;
i64 val[6];
de_dbg(c, "extension area at %d", (int)pos);
if(pos > c->infile->len - 2) {
de_warn(c, "Bad extension area offset: %u", (unsigned int)pos);
return;
}
de_dbg_indent(c, 1);
s = ucstring_create(c);
ext_area_size = de_getu16le(pos);
de_dbg(c, "extension area size: %d", (int)ext_area_size);
if(ext_area_size<495) goto done;
d->has_extension_area = 1;
ucstring_empty(s);
dbuf_read_to_ucstring(c->infile, pos+2, 41, s, DE_CONVFLAG_STOP_AT_NUL, DE_ENCODING_ASCII);
ucstring_strip_trailing_spaces(s);
de_dbg(c, "author: \"%s\"", ucstring_getpsz_d(s));
for(k=0; k<4; k++) {
ucstring_empty(s);
dbuf_read_to_ucstring(c->infile, pos+43+81*k, 81, s, DE_CONVFLAG_STOP_AT_NUL, DE_ENCODING_ASCII);
ucstring_strip_trailing_spaces(s);
de_dbg(c, "comment line %d: \"%s\"", (int)k, ucstring_getpsz_d(s));
}
// date/time: pos=367, size=12
has_date = 0;
for(k=0; k<6; k++) {
val[k] = de_getu16le(pos+367+2*k);
if(val[k]!=0) has_date = 1;
}
if(has_date) {
char timestamp_buf[64];
de_make_timestamp(&d->mod_time, val[2], val[0], val[1], val[3], val[4], val[5]);
d->mod_time.tzcode = DE_TZCODE_LOCAL;
de_timestamp_to_string(&d->mod_time, timestamp_buf, sizeof(timestamp_buf), 0);
de_dbg(c, "timestamp: %s", timestamp_buf);
}
// Job name: pos=379, size=41 (not implemented)
// Job time: pos=420, size=6 (not implemented)
ucstring_empty(s);
dbuf_read_to_ucstring(c->infile, pos+426, 41, s, DE_CONVFLAG_STOP_AT_NUL, DE_ENCODING_ASCII);
ucstring_strip_trailing_spaces(s);
de_dbg(c, "software id: \"%s\"", ucstring_getpsz_d(s));
val[0] = de_getu16le(pos+467);
val[1] = (i64)de_getbyte(pos+469);
if(val[0]!=0 || val[1]!=32) {
de_dbg(c, "software version: %u,%u,%u",
(unsigned int)(val[0]/100), (unsigned int)(val[0]%100),
(unsigned int)val[1]);
}
val[0] = de_getu32le(pos+470);
if(val[0]!=0) {
de_dbg(c, "background color: 0x%08x", (unsigned int)val[0]);
}
// TODO: Retain the aspect ratio. (Need sample files. Nobody seems to use this field.)
d->aspect_ratio_num = de_getu16le(pos+474);
d->aspect_ratio_den = de_getu16le(pos+476);
if(d->aspect_ratio_den!=0) {
de_dbg(c, "aspect ratio: %d/%d", (int)d->aspect_ratio_num, (int)d->aspect_ratio_den);
}
// Gamma: pos=478, size=4 (not implemented)
// Color correction table offset: pos=482, size=4 (not implemented)
d->thumbnail_offset = de_getu32le(pos+486);
de_dbg(c, "thumbnail image offset: %d", (int)d->thumbnail_offset);
val[0] = de_getu32le(pos+490);
de_dbg(c, "scan line table offset: %"I64_FMT, val[0]);
d->attributes_type = de_getbyte(pos+494);
de_dbg(c, "attributes type: %d", (int)d->attributes_type);
if(d->attributes_type==0 && d->num_attribute_bits!=0) {
de_warn(c, "Incompatible \"number of attribute bits\" (%d) and \"attributes type\" "
"(%d) fields. Transparency may not be handled correctly.",
(int)d->num_attribute_bits, (int)d->attributes_type);
}
done:
de_dbg_indent(c, -1);
ucstring_destroy(s);
}
static void do_card_index(deark *c, lctx *d, de_int64 cardnum, de_int64 pos)
{
de_int64 datapos;
de_int64 bitmap_len;
de_int64 w, h;
de_int64 src_rowspan;
de_int64 text_len;
de_int64 text_pos;
struct deark_bitmap *img = NULL;
de_finfo *fi_bitmap = NULL;
de_finfo *fi_text = NULL;
const char *cardtype;
de_ucstring *name = NULL;
int saved_indent_level;
de_dbg_indent_save(c, &saved_indent_level);
datapos = de_getui32le(pos+6);
de_dbg(c, "card #%d at %d, dpos=%d\n", (int)cardnum, (int)pos, (int)datapos);
de_dbg_indent(c, 1);
if(datapos>=c->infile->len) goto done;
bitmap_len = de_getui16le(datapos);
de_dbg(c, "bitmap length: %d\n", (int)bitmap_len);
if(bitmap_len==0) {
text_len = de_getui16le(datapos+2);
text_pos = datapos+4;
}
else {
text_len = de_getui16le(datapos + bitmap_len + 10);
text_pos = datapos + bitmap_len + 10;
}
de_dbg(c, "text length: %d\n", (int)text_len);
if(bitmap_len==0 && text_len==0) {
cardtype = "empty";
}
else if(bitmap_len==0) {
cardtype = "text-only";
}
else if(text_len==0) {
cardtype = "graphics-only";
}
else {
cardtype = "graphics+text";
}
de_dbg(c, "card type: %s\n", cardtype);
if(bitmap_len==0 && text_len==0) {
goto done;
}
name = ucstring_create(c);
dbuf_read_to_ucstring(c->infile, pos+11, 40, name, DE_CONVFLAG_STOP_AT_NUL, DE_ENCODING_ASCII);
de_dbg(c, "name: \"%s\"\n", ucstring_get_printable_sz(name));
// Text
if(text_len!=0 && c->extract_level>=2) {
fi_text = de_finfo_create(c);
if(c->filenames_from_file)
de_finfo_set_name_from_ucstring(c, fi_text, name);
do_text_data(c, d, fi_text, text_pos, text_len);
}
// Bitmap
if(bitmap_len==0) goto done;
fi_bitmap = de_finfo_create(c);
if(c->filenames_from_file)
de_finfo_set_name_from_ucstring(c, fi_bitmap, name);
w = de_getui16le(datapos+2);
h = de_getui16le(datapos+4);
de_dbg(c, "bitmap dimensions: %dx%d\n", (int)w, (int)h);
img = de_bitmap_create(c, w, h, 1);
src_rowspan = ((w+15)/16)*2;
de_convert_and_write_image_bilevel(c->infile, datapos+10,
w, h, src_rowspan, 0, fi_bitmap, 0);
done:
ucstring_destroy(name);
de_bitmap_destroy(img);
de_finfo_destroy(c, fi_bitmap);
de_finfo_destroy(c, fi_text);
de_dbg_indent_restore(c, saved_indent_level);
}
void dbuf_read_to_ucstring_n(dbuf *f, i64 pos, i64 len, i64 max_len,
de_ucstring *s, unsigned int conv_flags, int encoding)
{
if(len>max_len) len=max_len;
dbuf_read_to_ucstring(f, pos, len, s, conv_flags, encoding);
}
