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); }