public int getStartxref() throws IOException { int size = Math.min(1024, file.length()); int pos = file.length() - size; file.seek(pos); String str = readString(1024); int idx = str.lastIndexOf("startxref"); if (idx < 0) throw new IOException("PDF startxref not found."); return pos + idx; }
private void openpfm() throws IOException { in.seek(0); vers = in.readShortLE(); h_len = in.readIntLE(); copyright = readString(60); type = in.readShortLE(); points = in.readShortLE(); verres = in.readShortLE(); horres = in.readShortLE(); ascent = in.readShortLE(); intleading = in.readShortLE(); extleading = in.readShortLE(); italic = (byte) in.read(); uline = (byte) in.read(); overs = (byte) in.read(); weight = in.readShortLE(); charset = (byte) in.read(); pixwidth = in.readShortLE(); pixheight = in.readShortLE(); kind = (byte) in.read(); avgwidth = in.readShortLE(); maxwidth = in.readShortLE(); firstchar = in.read(); lastchar = in.read(); defchar = (byte) in.read(); brkchar = (byte) in.read(); widthby = in.readShortLE(); device = in.readIntLE(); face = in.readIntLE(); bits = in.readIntLE(); bitoff = in.readIntLE(); extlen = in.readShortLE(); psext = in.readIntLE(); chartab = in.readIntLE(); res1 = in.readIntLE(); kernpairs = in.readIntLE(); res2 = in.readIntLE(); fontname = in.readIntLE(); if (h_len != in.length() || extlen != 30 || fontname < 75 || fontname > 512) throw new IOException(MessageLocalization.getComposedMessage("not.a.valid.pfm.file")); in.seek(psext + 14); capheight = in.readShortLE(); xheight = in.readShortLE(); ascender = in.readShortLE(); descender = in.readShortLE(); }
/** * If the embedded flag is <CODE>false</CODE> or if the font is one of the 14 built in types, it * returns <CODE>null</CODE>, otherwise the font is read and output in a PdfStream object. * * @return the PdfStream containing the font or <CODE>null</CODE> * @throws DocumentException if there is an error reading the font */ private PdfStream getFontStream() throws DocumentException { if (builtinFont || !embedded) return null; RandomAccessFileOrArray rf = null; try { String filePfb = fileName.substring(0, fileName.length() - 3) + "pfb"; if (pfb == null) rf = new RandomAccessFileOrArray(filePfb); else rf = new RandomAccessFileOrArray(pfb); int fileLength = rf.length(); byte st[] = new byte[fileLength - 18]; int lengths[] = new int[3]; int bytePtr = 0; for (int k = 0; k < 3; ++k) { if (rf.read() != 0x80) throw new DocumentException("Start marker missing in " + filePfb); if (rf.read() != PFB_TYPES[k]) throw new DocumentException("Incorrect segment type in " + filePfb); int size = rf.read(); size += rf.read() << 8; size += rf.read() << 16; size += rf.read() << 24; lengths[k] = size; while (size != 0) { int got = rf.read(st, bytePtr, size); if (got < 0) throw new DocumentException("Premature end in " + filePfb); bytePtr += got; size -= got; } } return new StreamFont(st, lengths); } catch (Exception e) { throw new DocumentException(e); } finally { if (rf != null) { try { rf.close(); } catch (Exception e) { // empty on purpose } } } }
public int length() throws IOException { return file.length(); }