Package java.io

Examples of java.io.RandomAccessFile


                                       * Frame index record length
                                       * (was 37)
                                       */
        int Frame_sec_len; /* Frame section length */

        RandomAccessFile fout = null;
        int groupCount = groups.size();
        int nFrames = frames.size();

        /* cumulative pathname positions */
        int[] pathname_pos = new int[nFrames];

        /* List of pathnames: directories */
        String[] direct = new String[nFrames];

        /* Allocations for uniq directories */
        int[] uniq_dir_ptr = new int[nFrames]; /*
                                                * index from filename
                                                * to uniq direct.
                                                */
        int[] uniq_dir_pos = new int[nFrames]; /*
                                                * position of direct.
                                                * name in file
                                                */

        /* list of direct. names */
        String[] uniq_dir = new String[nFrames];

        String georef = "AAAAAA"; /* GEOREF # */
        Frame frame;
        Group group;

        // Right now, just write the new file locally.
        try {
            fout = new RandomAccessFile(filename, "rw");

            /* WRITE TOC : */
            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: *** writing TOC ***\n  at: " + filename);
            }

            /* HEADER SECTION */
            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: *** writing header section ***");
            }

            String charString;
            char[] nt = new char[1];
            nt[0] = '\0';

            /* DKS. Can't write structure because of pad bytes */
            /* fwrite(&head, sizeof(head), 1, fout); */

            fout.writeBoolean(head.endian); // Big Endian - should
            // match head.endian
            fout.writeShort(RpfHeader.HEADER_SECTION_LENGTH);
            fout.writeBytes("       A.TOC"); // has to be padded.
            fout.writeByte(head.neww);

            fout.writeBytes(head.standardNumber);
            if (head.standardNumber.length() < 15) {
                fout.writeBytes(createPadding(15 - head.standardNumber.length(),
                        false));
            }

            fout.writeBytes(head.standardDate);
            if (head.standardDate.length() < 8) {
                fout.writeBytes(createPadding(8 - head.standardDate.length(),
                        false));
            }

            // All this trouble just for a silly character.
            char[] charArray = new char[1];
            charArray[0] = head.classification;
            charString = new String(charArray);
            fout.writeBytes(charString);

            Debug.message("maketoc", "MakeToc: writing country(" + head.country
                    + ") and release(" + head.release + ")");

            fout.writeBytes(head.country);
            fout.writeBytes(head.release);

            /*
             * New, DKS. no longer head.loc_sec_phys_loc. Always write
             * 48.
             */
            /*
             * DFD - This isn't true, but since we don't care about
             * NITF formatting, it may be. Just write out where we
             * are.
             */
            int location_section_location = (int) fout.getFilePointer() + 4;
            fout.writeInt(location_section_location);

            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: location section location is : "
                        + location_section_location);
            }

            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: *** writing location section ***");
            }

            /* LOCATION SECTION */
            int Loc_hdr_len = 14; /* Location section header length */
            int Loc_sec_comp_len = 10; /*
                                        * Location section component
                                        * length
                                        */

            /* 14 + 4 * 10 = 54 */
            Loc_sec_len = Loc_hdr_len
                    + (RpfFileSections.TOC_LOCATION_KEY * Loc_sec_comp_len);
            fout.writeShort(Loc_sec_len);
            /* compon. loc tbl offset: location section hdr length */
            fout.writeInt(Loc_hdr_len);
            /* # records in location section: 4 */
            fout.writeShort(RpfFileSections.TOC_LOCATION_KEY);
            /* component location record length: 10 */
            fout.writeShort(Loc_sec_comp_len);

            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc:\n  location section length: "
                        + Loc_sec_len + "\n  location header length: "
                        + Loc_hdr_len + "\n  number of location records: "
                        + RpfFileSections.TOC_LOCATION_KEY
                        + "\n  location section comp length: "
                        + Loc_sec_comp_len);
            }

            /*
             * compon. aggregate len: unknown here. Fill in after
             * doing all else.
             */
            /* location component aggregate length file location */
            long agg_loc = fout.getFilePointer(); /* save for later */
            fout.writeInt(0); // place holder.

            /* Begin: location section, component location table */

            int Bound_hdr_len = 8; /* Boundary section header length */
            int Bound_rec_len = 132; /* Boundary record length */

            /* Boundary section length */
            int Bound_sec_len = Bound_hdr_len + (groupCount * Bound_rec_len);

            /* Compute frame section length, for later */
            pathname_pos[0] = 0; /* cum. offset */
            int uniq_dir_cnt = 0; /* # of unique directory paths. */

            // Looking for the directory name for each file.
            for (i = 0; i < nFrames; i++) { /* for each frame file */

                /*
                 * set tail to ptr to last occurrence of '/' in
                 * filename
                 */
                /* frames[i].filename is full pathname */
                frame = (Frame) frames.elementAt(i);

                tail = frame.filename.lastIndexOf(File.separatorChar);
                if (tail == -1) {
                    direct[i] = frame.filename;
                } else {
                    // Java-cise the name, so it meets spec.
                    direct[i] = frame.filename.substring(0, ++tail)
                            .replace('\\', '/');
                }

                if (Debug.debugging("maketocdetail"))
                    Debug.output("MakeToc: Matching directory: " + direct[i]);

                /* Match direct. names with list of uniq direct. names */

                /* flag for found name in list */
                boolean uniq_dir_match = false;
                String tmpDir = null;

                if (relativeFramePaths) {
                    int rpfIndex = direct[i].lastIndexOf("RPF");
                    if (rpfIndex == -1) {
                        rpfIndex = direct[i].lastIndexOf("rpf");
                    }
                    if (rpfIndex != -1) {
                        rpfIndex += 3;
                        if (direct[i].length() > rpfIndex
                                && direct[i].charAt(rpfIndex) == '/') {

                            rpfIndex++;
                        }
                        tmpDir = "./" + direct[i].substring(rpfIndex);
                    } else {
                        if (Debug.debugging("maketoc")) {
                            Debug.output("RPF directory not found in directory path "
                                    + direct[i] + ", using absolute path");
                        }
                        tmpDir = direct[i];
                    }

                } else {
                    tmpDir = direct[i];
                }

                for (j = 0; j < uniq_dir_cnt; j++) {
                    if (tmpDir.equals(uniq_dir[j])) {
                        uniq_dir_ptr[i] = j;
                        uniq_dir_match = true;
                        if (Debug.debugging("maketocdetail"))
                            Debug.output("Found match with: " + uniq_dir[j]);
                        break;
                    }
                }

                if (!uniq_dir_match) {
                    uniq_dir[uniq_dir_cnt] = tmpDir;
                    uniq_dir_ptr[i] = uniq_dir_cnt;
                    if (Debug.debugging("maketoc"))
                        Debug.output("Adding Unique directory: "
                                + uniq_dir[uniq_dir_cnt]);
                    uniq_dir_cnt++;
                } /* if */

            } /* for i */

            if (Debug.debugging("maketoc"))
                Debug.output("Uniq_dir_cnt: " + uniq_dir_cnt);

            /* compute uniq dir pathname table length */
            int path_table_len = 0;
            for (j = 0; j < uniq_dir_cnt; j++) {
                /* 2 for path length var. in hdr */
                path_table_len += 2 + uniq_dir[j].length();
            } /* for j */

            /* compute directory name positions in file */
            uniq_dir_pos[0] = 0;
            for (j = 1; j < uniq_dir_cnt; j++) {
                uniq_dir_pos[j] = uniq_dir_pos[j - 1] + 2
                        + uniq_dir[j - 1].length();
            } /* for j */

            for (j = 0; j < uniq_dir_cnt; j++) {
                if (Debug.debugging("maketocdetail"))
                    Debug.output("j: " + j + ", uniq_dir_pos[j]: "
                            + uniq_dir_pos[j]);
            } /* for j */

            /* compute direct. positions for each input file pathname */
            for (i = 0; i < nFrames; i++) {
                pathname_pos[i] = uniq_dir_pos[uniq_dir_ptr[i]];
                if (Debug.debugging("maketocdetail"))
                    Debug.output("i: " + i + ", pathname_pos[i]:"
                            + pathname_pos[i]);
            } /* for i */

            /*
             * frame file index record length: 9 + nFrames * 33 +
             * path_table_len
             */
            Frame_sec_len = Frame_hdr_len + nFrames * Frame_index_rec_len
                    + path_table_len;

            /* START LOCATION RECORD 1 */
            /* ID #: */
            fout.writeShort((short) RpfFileSections.LOC_BOUNDARY_SECTION_SUBHEADER);

            // The boundary section subheader is the first part of the
            // bounfary rectangle section. The boundary section comes
            // right after the header (in this program - the spec will
            // allow it to be anywhere).

            /* Boundary section subheader length */
            fout.writeInt(Bound_hdr_len);

            /* DKS. Physical location */
            /* 0 + 48 + 54 */
            fout.writeInt(TOC_Nitf_hdr_size + RpfHeader.HEADER_SECTION_LENGTH
                    + Loc_sec_len);

            /* START LOCATION RECORD 2 */
            /* ID #: */
            fout.writeShort((short) RpfFileSections.LOC_BOUNDARY_RECTANGLE_TABLE);

            /* Boundary rectangle table length */
            Bound_tbl_len = groupCount * Bound_rec_len;
            fout.writeInt(Bound_tbl_len);

            /* DKS. Physical location */
            /* 0 + 48 + 54 + 8 */
            fout.writeInt(TOC_Nitf_hdr_size + RpfHeader.HEADER_SECTION_LENGTH
                    + Loc_sec_len + Bound_hdr_len);

            Bound_sec_len = Bound_hdr_len + Bound_tbl_len;

            /* START LOCATION RECORD 3 */
            /* ID #: */
            fout.writeShort((short) RpfFileSections.LOC_FRAME_FILE_INDEX_SUBHEADER);

            /* length */
            fout.writeInt(Frame_hdr_len);

            /* physical index (offset) */
            fout.writeInt(TOC_Nitf_hdr_size + RpfHeader.HEADER_SECTION_LENGTH
                    + Loc_sec_len + Bound_sec_len);

            /* START LOCATION RECORD 4 */
            /* ID #: */
            fout.writeShort((short) RpfFileSections.LOC_FRAME_FILE_INDEX_SUBSECTION);

            /* length */
            /* Frame_sec_len computed above */
            fout.writeInt(Frame_sec_len - Frame_hdr_len);

            /* physical index (offset) */
            fout.writeInt(TOC_Nitf_hdr_size + RpfHeader.HEADER_SECTION_LENGTH
                    + Loc_sec_len + Bound_sec_len + Frame_hdr_len);

            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: boundary section at : "
                        + fout.getFilePointer());
            }

            /* START BOUNDARY RECTANGLE SECTION */
            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: *** writing boundary rectangles ***");
            }

            /* Subheader */
            /* boundary rectangle table offset */
            fout.writeInt(0);

            /* # of boundary rectangle records */
            fout.writeShort((short) groupCount);

            /* boundary rectangle record length */
            fout.writeShort((short) Bound_rec_len);

            /* For each boundary rectangle record */
            for (i = 0; i < groupCount; i++) {

                group = (Group) groups.elementAt(i);

                /*
                 * Key off flag to write proper data to A.TOC for
                 * browse menu later
                 */
                if (group.cib) {
                    fout.writeBytes("CIB  ");
                    fout.writeBytes("8:1  "); /* Compr. ratio */
                } else if (group.cdted) {
                    fout.writeBytes("CDTED");
                    fout.writeBytes("6.5:1"); /*
                                               * Compr. ratio:
                                               * VARIABLE
                                               */
                } else {
                    fout.writeBytes("CADRG");
                    fout.writeBytes("55:1 ");
                } /* else */

                // Should be 12 padded chars, check just in case...
                if (group.scale.length() < 12) {
                    fout.writeBytes(group.scale);
                    fout.writeBytes(createPadding(12 - group.scale.length(),
                            false));
                } else {
                    fout.writeBytes(group.scale.substring(0, 12)); // Already
                    // 12
                    // padded
                    // chars
                }

                // All this trouble just for a silly character.
                charArray[0] = group.zone;
                charString = new String(charArray);
                fout.writeBytes(charString);

                /* DKS changed from AFESC to DMAAC 8/2/94 */
                /* Producer: */
                //  Should be OpenMap BBN, I guess.
                fout.writeBytes(producer);

                /*
                 * PBF - If group is polar, change boundaries from
                 * rect coordinates to lat-lon -- 6-19-94
                 */
                if (group.zone == '9' || group.zone == 'J') { /*
                                                               * polar
                                                               * zone
                                                               */
                    /*
                     * DKS: switched x,y to match spec: x increases
                     * right, y up.
                     */
                    ytop = group.horiz_pos[group.top];
                    ybottom = group.horiz_pos[group.bottom];
                    xleft = group.vert_pos[group.left];
                    xright = group.vert_pos[group.right];

                    if (Debug.debugging("maketoc")) {
                        Debug.output("POLAR ZONE. ytop: " + ytop
                                + ", ybottom: " + ybottom + ", xleft: " + xleft
                                + ", xright:" + xright);
                    }
                    /* see CADRG SPEC 89038, p. 50 */
                    /*
                     * FIND LATITUDES from x,y. x increases right, y
                     * up.
                     */

                    /* DKS new 1/95 to handle South pole separately. */
                    /* h_interval converts from pix to deg. */
                    if (group.zone == '9') { /* "9": NORTH POLE */
                        top = 90 - (Math.sqrt((ytop * ytop) + (xleft * xleft)) * (group.h_interval));
                        bottom = 90 - (Math.sqrt((ybottom * ybottom)
                                + (xright * xright)) * (group.h_interval));
                    } /* North pole */

                    else { /* "J": South Pole */
                        top = -90
                                + (Math.sqrt((ytop * ytop) + (xleft * xleft)) * (group.h_interval));
                        bottom = -90
                                + (Math.sqrt((ybottom * ybottom)
                                        + (xright * xright)) * (group.h_interval));
                    } /* South pole */

                    if (Debug.debugging("maketoc"))
                        Debug.output("LATS. top: " + top + ", bottom: "
                                + bottom);

                    /*
                     * Cvt from x,y to LONGITUDE; from radians to
                     * degrees
                     */

                    /* DKS added South pole case 1/95 */

                    if (group.zone == '9') { /* "9": NORTH POLE */
                        left_t = 180.0
                                / Math.PI
                                * Math.acos(-ytop
                                        / Math.sqrt((ytop * ytop)
                                                + (xleft * xleft)));
                        /* DKS fixed bug 1/95: from ytop to ybottom */
                        left_b = 180.0
                                / Math.PI
                                * Math.acos(-ybottom
                                        / Math.sqrt((ybottom * ybottom)
                                                + (xleft * xleft)));
                        right_t = 180.0
                                / Math.PI
                                * Math.acos(-ytop
                                        / Math.sqrt((ytop * ytop)
                                                + (xright * xright)));
                        /* DKS fixed bug 1/95: from ytop to ybottom */
                        right_b = 180.0
                                / Math.PI
                                * Math.acos(-ybottom
                                        / Math.sqrt((ybottom * ybottom)
                                                + (xright * xright)));
                    } /* if North pole */

                    else { /* South Pole */
                        left_t = 180.0
                                / Math.PI
                                * Math.acos(ytop
                                        / Math.sqrt((ytop * ytop)
                                                + (xleft * xleft)));
                        /* DKS fixed bug 1/95: from ytop to ybottom */
                        left_b = 180.0
                                / Math.PI
                                * Math.acos(ybottom
                                        / Math.sqrt((ybottom * ybottom)
                                                + (xleft * xleft)));
                        right_t = 180.0
                                / Math.PI
                                * Math.acos(ytop
                                        / Math.sqrt((ytop * ytop)
                                                + (xright * xright)));
                        /* DKS fixed bug 1/95: from ytop to ybottom */
                        right_b = 180.0
                                / Math.PI
                                * Math.acos(ybottom
                                        / Math.sqrt((ybottom * ybottom)
                                                + (xright * xright)));
                    } /* if South pole */

                    /* For both poles: */
                    if (xleft < 0) { /*
                                      * left half of earth has
                                      * negative longits
                                      */
                        left_t = -left_t;
                        left_b = -left_b;
                    }
                    /* This will hardly ever happen: */
                    if (xright < 0) { /*
                                       * left half of earth has
                                       * negative longs
                                       */
                        right_t = -right_t;
                        right_b = -right_b;
                    }

                    if (Debug.debugging("maketoc"))
                        Debug.output("LONGS. left_t: " + left_t + ", right_t: "
                                + right_t);
                    if (Debug.debugging("maketoc"))
                        Debug.output("LONGS. left_b: " + left_b + ", right_b: "
                                + right_b);

                    //  #if 0
                    //                  /* !!!!!!!!!!!!!!!!!!! Fix to getlat [80,90],
                    // longit. [-180,180] */
                    //                  bottom = 80.0 ;
                    //                  top = 90.0 ;
                    //                  left = -180.0 ;
                    //                  right = 180.0 ;
                    //  #endif

                } /* if polar zone */

                /* end DKS portion */
                /* end PBF cvt from xy to lat-long */

                else { /* non-polar zone */

                    left_t = group.vert_pos[group.left];
                    left_b = left_t;
                    right_t = group.vert_pos[group.right];
                    right_b = right_t;
                    top = group.horiz_pos[group.top];
                    bottom = group.horiz_pos[group.bottom];

                } /* else */

                //              Debug.output("For RpfTocEntry, writing: \n top = "
                // + top +
                //                           "\n bottom = " + bottom + "\n left = " + left_t +
                //                           "\n right = " + right_t + "\n---------");

                // Writing all doubles

                fout.writeDouble(top);
                fout.writeDouble(left_t);
                fout.writeDouble(bottom);
                fout.writeDouble(left_b);
                fout.writeDouble(top);
                fout.writeDouble(right_t);
                fout.writeDouble(bottom);
                fout.writeDouble(right_b);

                fout.writeDouble(group.v_resolution);
                fout.writeDouble(group.h_resolution);
                fout.writeDouble(group.v_interval);
                fout.writeDouble(group.h_interval);

                /* # frames */
                fout.writeInt((int) (group.bottom - group.top));
                fout.writeInt((int) (group.right - group.left));
            }

            if (Debug.debugging("maketoc")) {
                Debug.output("MakeToc: *** writing frame section ***");
                Debug.output("MakeToc: started with a 'U'");
            }

            /* START FRAME SECTION */
            /* Now write frames */

            /* security classif */
            charArray[0] = 'U';
            charString = new String(charArray);
            fout.writeBytes(charString);

            /* frame file index tbl offset */
            fout.writeInt(0);

            /* # of frame file index records */
            fout.writeInt(nFrames);

            /* # of pathname (directory) records */
            /* DKS NEW: was nFrames: */
            fout.writeShort(uniq_dir_cnt);

            /* frame file index record length : 33 */
            fout.writeShort(Frame_index_rec_len);

            /* Frame file index subsection */
            for (i = 0; i < nFrames; i++) { /* for each frame file */
                frame = (Frame) frames.elementAt(i);
                group = (Group) groups.elementAt(frame.group);

                if (!frame.marked) {
                    Debug.error(frame.filename + ": not in a boundary rect??");
                    //              continue;
                }

                /* NEW, DKS: +1 removed so range is [0,n]: */
                fout.writeShort(frame.group); /* Boundary rect. rec. # */

                /* Frame location ROW number */
                /*
                 * DKS. Changed from top to bottom to fix bug in
                 * Theron's frame numbering
                 */
                /*
                 * Should start numbering at BOTTOM (southern-most
                 * part) of group
                 */
                /* !!! Changed back so row num is never <= 0 */
                /* Alternative is bottom-y, not y-bottom. Try later */
                /*
                 * us = frames[i].y - groups[frames[i].group].bottom +
                 * 1;
                 */
                /* NEW, DKS: START AT 0, NOT 1: REMOVE "+ 1": */
                /* us = frames[i].y - groups[frames[i].group].top; */

                /*
                 * SMN The frames number are from the bottom left not
                 * top left
                 */
                us = (short) (group.bottom - frame.y - 1);

                if (Debug.debugging("maketocframedetail")) {
                    Debug.output("iframe: " + i + ", frame.y: " + frame.y);
                    Debug.output("frame.group: " + frame.group);
                    Debug.output("group.bottom:" + group.bottom);
                    Debug.output("group.top:" + group.top);
                    Debug.output("frame row #:" + us);
                }

                fout.writeShort(us);

                /* Frame location Column number */
                /* NEW, DKS: START AT 0, NOT 1: REMOVE "+ 1": */
                fout.writeShort((short) (frame.x - group.left));

                /* pathname record offset: */
                /*
                 * DKS 11/10: Now w.r.t. frame file index table
                 * subsection
                 */
                /*
                 * ui = head.HEADER_SECTION_LENGTH + Loc_sec_len +
                 * Bound_sec_len + Frame_hdr_len +
                 * nFrames*Frame_index_rec_len + pathname_pos[i] ;
                 */
                fout.writeInt((int) (nFrames * Frame_index_rec_len + pathname_pos[i]));

                String framename;
                tail = frame.filename.lastIndexOf(File.separatorChar);
                if (tail == -1) {
                    framename = frame.filename;
                } else {
                    framename = frame.filename.substring(++tail);
                }
                if (framename.length() > 12) {
                    Debug.error("MakeToc: encountered a frame name that's too long!\n"
                            + framename);
                    framename = framename.substring(0, 12);
                }

                /* frame file name */
                fout.writeBytes(framename);

                String seriesCode = framename.substring(9, 11);

                /* Check for Overview image: affects GEOREF */
                if (!seriesCode.equalsIgnoreCase("OV")
                        && !seriesCode.equalsIgnoreCase("LG")
                        && !seriesCode.equalsIgnoreCase("OI")) {
                    /* Not Overview or Lengend img */
                    /* DKS 8/1/94: handle polar zone separately */
                    if (frame.zone != '9' || frame.zone != 'J') { /*
                                                                   * polar
                                                                   * zone
                                                                   */
                        georef = latlong2GEOREF(frame.swlat, frame.swlon);
                    } else { /* not polar */
                        georef = latlong2GEOREF(frame.bottom, frame.left);
                    } /* else */

                } else { /* Overview image has no GEOREF */
                    if (Debug.debugging("maketoc"))
                        Debug.output("Overview image has no GEOREF");
                    georef = "000000";
                } /* else */

                fout.writeBytes(georef);

                /* classification */
                // HACK - assumes unclassified data.
                fout.writeBytes(charString);

                fout.writeBytes(head.country);
                fout.writeBytes(head.release);
            } /* for i (each frame file) */

            Debug.message("maketoc",
                    "MakeToc: *** writing directory section ***");

            /* Pathname table */
            /*
             * Write UNIQUE pathnames: really Directory name, e.g.
             * "./CENTRAL.USA/"
             */
            for (j = 0; j < uniq_dir_cnt; j++) {
                /* DKS new */
                /*
                 * write pathname length. !!?? may be padded in front
                 * to align on word bndary!!??
                 */
                fout.writeShort((short) (uniq_dir[j].length()));

                /* pathname */
                fout.writeBytes(uniq_dir[j]);
            } /* for j (each uniq directory) */

            /* No color table index section */

            /*
             * Go back and fill in component aggregate length in
             * location section
             */
            fout.seek(agg_loc);
            fout.writeInt((int) (Bound_sec_len + Frame_sec_len));

            fout.close();
            Debug.message("maketoc", "MakeToc: *** Normal end of make-toc ***");

        } catch (IOException ioe) {
            throw new MakeTocException(ioe.getMessage());
        }
View Full Code Here


                    InputStream is = shx.openStream();
                    ShxInputStream pis = new ShxInputStream(is);
                    int[][] index = pis.getIndex();
                    is.close();
                   
                    RandomAccessFile raf = new RandomAccessFile(shape + ".shp", "rw");
                    raf.seek(24);
                    int contentLength = raf.readInt();
                   
                    int indexedContentLength = index[0][index[0].length - 1] + index[1][index[1].length - 1];
                   
                    if (contentLength != indexedContentLength) {
                        System.out.println(shape + " content length - shp: " + contentLength + ", shx: " + indexedContentLength);
                        raf.seek(24);
                        raf.writeInt(indexedContentLength);
                    }
                    raf.close();
                   
                } catch (Exception e) {
                    e.printStackTrace();
                }
               
View Full Code Here

     *
     * @exception IOException if something goes wrong opening or
     *            reading the file.
     */
    public ShapeFile(String name) throws IOException {
        raf = new RandomAccessFile(name, "rw");
        recHdr = new byte[ShapeUtils.SHAPE_FILE_RECORD_HEADER_LENGTH];
        recBuf = new byte[DEFAULT_RECORD_BUFFER_SIZE];
        initHeader();
    }
View Full Code Here

                _pageSize = pgsize;
            }

            void open(File file) throws ChaiDBException {
                try {
                    this._file = new RandomAccessFile(file, "rw");
                } catch (FileNotFoundException fnfe) {
                    try {
                        String dir = file.getAbsolutePath();
                        dir = dir.substring(0, dir.lastIndexOf(File.separator));
                        new File(dir).mkdirs();
                        this._file = new RandomAccessFile(file, "rw");
                        //modified by Stanley
                        virtualFiles.remove(file.getAbsolutePath());
                    } catch (Exception e) {
                        // moved to details -ranjeet
                        String details = "Open for file " + file.getName() + " failed. " + e.toString() + ".";
View Full Code Here

        if ((fileLen == 0) || (offset > fileLen)) {
            throw new ChaiDBException(ErrorCode.LOG_RECORD_NOT_EXIST);
        }

        RandomAccessFile rfile = null;

        try {
            rfile = open(fileId, "r");

            /* get the record header(Hdr) */
            byte[] hdrArr = new byte[hdrLen];
            rfile.seek(offset);
            rfile.read(hdrArr, 0, hdrLen);

            Hdr hdr = new Hdr();

            if (hdr.read(hdrArr, 0)) {
                int logRecLen = hdr.getLength();
                byte[] logObjArr = new byte[logRecLen];
                rfile.seek(offset);
                rfile.read(logObjArr, 0, logRecLen);

                return RecordFactory.createRecord(logObjArr, 0);
            } else {
                throw new ChaiDBException(ErrorCode.LOG_RECORD_HEADER_CANNOT_READ);
            }
        } catch (IOException ie) {
            throw new ChaiDBException(ErrorCode.LOG_FILE_IO_ERROR, ie);
        } finally {
            if (rfile != null) {
                try {
                    rfile.close();
                } catch (IOException e) {
                    throw new ChaiDBException(ErrorCode.LOG_FILE_IO_ERROR, e);
                }
            }
        }
View Full Code Here

     * @throws Exception
     */
  public FilePropertiesMovie(String filename) throws Exception {
    boolean supported = false;
    FileProperties fileProperties = null;
        RandomAccessFile dataStream = null;

    try {
        FileProperties[] FORMATS = { new FilePropertiesMPEG(),
                new FilePropertiesMPEG(), new FilePropertiesRIFF(),
                new FilePropertiesOGM(), new FilePropertiesIFO(),
                new FilePropertiesMKV(), new FilePropertiesASF()};

      dataStream = new RandomAccessFile(filename, "r");

      // gets the header for file type identification
      int[] header = new int[4];
      for (int i = 0; i < header.length; i++)
        header[i] = dataStream.readUnsignedByte();

      // finds the right object
      int format = 0;
      for (format = 0; format < FORMATS.length; format++) {
        if (Arrays.equals(header, MAGIC_BYTES[format]))
          break;
      }

      if (format < FORMATS.length) {
        supported = true;

        fileProperties = FORMATS[format];
        fileProperties.process(dataStream, filename);

        setFilename(filename);
       
        setName(fileProperties.getName());
        setLanguage(fileProperties.getLanguage());
        setSubtitles(fileProperties.getSubtitles());
        setVideoResolution(fileProperties.getVideoResolution());
        setVideoCodec(fileProperties.getVideoCodec());
        setVideoRate(fileProperties.getVideoRate());
        setVideoBitRate(fileProperties.getVideoBitRate());
        setDuration(fileProperties.getDuration());
        setAudioCodec(fileProperties.getAudioCodec());
        setAudioRate(fileProperties.getAudioRate());
        setAudioBitRate(fileProperties.getAudioBitRate());
        setAudioChannels(fileProperties.getAudioChannels());
        setContainer(fileProperties.getContainer());
        setMetaData(fileProperties.getMetaData());
      }
     
    } catch (Exception e) {
      throw new Exception("File is corrupted. Some info may have been saved.");
    } finally {
        if (dataStream != null) dataStream.close();
      if (!supported) throw new Exception("File format not supported.");
    }
  }
View Full Code Here

        file = fileNew != null ? fileNew : file;
        text.setText(getFilename());

        if (fileNew != null) {
            try {
                RandomAccessFile random = new RandomAccessFile(file, "rw");
                random.close();
            } catch (Exception exp) {
                DcSwingUtilities.displayErrorMessage("msgFileCouldNotbeCreated");
                logger.error(DcResources.getText("msgFileCouldNotbeCreated"), exp);
            }
        }
View Full Code Here

            queryFile = new File(DataCrow.dataDir, "data_crow_queries.txt");
        }

        try {
            queryFile.createNewFile();
            RandomAccessFile access  = new RandomAccessFile(queryFile, "rw");

            for (int i = 0; i < comboSQLCommands.getItemCount(); i++) {
                Object o = comboSQLCommands.getItemAt(i);
                if (o != null && o instanceof QueryObject) {
                    String query = ((QueryObject) o).getQryString();
                    query = query.replaceAll("\r", " ");
                    query = query.replaceAll("\n", " ");
                    access.writeBytes(query + '\n');
                }
            }
        } catch (Exception e) {
            logger.error(DcResources.getText("msgFileSaveError", queryFile.toString()), e);
        }
View Full Code Here

              if (!tmpFile.canRead()) {
                  logger.info("Could not read drive information file: " + tmpFile + " The drive for which this file was created will be skipped!");
                  continue;
              }
             
                RandomAccessFile raf = new RandomAccessFile(tmpFile, "r");
              long length = raf.length();
             
              while (raf.getFilePointer() < length) {
                  try {
                      String line = raf.readLine();
                      int idx = line.indexOf("=");
                     
                      Long fodSize = Long.valueOf(line.substring(0, idx));
                      String fodName = line.substring(idx + 1);
                      File fod = new File(fodName);
                       
                        // make sure the file exists; might be dealing with info from an unmounted drive!
                      if (!fod.exists()) {
                          logger.info("The file as found in " + tmpFile + " does not exist and will be skipped.");
                          continue;
                      }
                     
                        boolean match = false;
                        String newHash = null;
                       
                        // low: match file name
                        if (precision == DriveManager._PRECISION_LOWEST && name.equals(fod.getName())) {
                            match = true;
                           
                        // medium: match on file size and file name
                        } else if (precision == DriveManager._PRECISION_MEDIUM &&
                                   name.equals(fod.getName()) && fodSize.equals(fi.getSize())) {
                            match = true;
                    
                        // high: match on file size and file hash
                        } else if (precision == DriveManager._PRECISION_HIGHEST) {
                        
                            if (fodSize.equals(fi.getSize())) {
                           
                                newHash = getHash(fod);
                            
                                // can happen when out of memory, when the file is not readable or when the settings
                                // do not allow for the hash to be calculated based on the file size.
                                if (newHash == null)
                                    continue;
                               
                                hashes.put(fod, newHash);
                               
                              if (newHash.equals(fi.getHash())) {
                                 match = true;
                              }
                            }
                        }
                     
                        if (match) {
                            // calculate the new hash if needed
                            newHash = getHash(fod);
                            Long filesize = Utilities.getSize(fod);
                           
                            logger.info("Match found for " + name + " (hash: " + newHash + ", filesize " + String.valueOf(filesize) + ")");
                            result = getFileInfo(fod, newHash, filesize);
                            break;
                        }
                } catch (IOException ioe) {
                    logger.error(ioe, ioe);
                }
              }
               
                try {
                    raf.close();
                } catch (IOException ioe) {
                    logger.error("Could not close RAF", ioe);
                }
               
                if (result != null)
View Full Code Here

    private synchronized void ensureOpen() throws IOException {
        if(open) {
            return;
        }
        if(raf == null) {
            this.raf = new RandomAccessFile(file, "rw");
        }
        this.open = true;
    }
View Full Code Here

TOP

Related Classes of java.io.RandomAccessFile

Copyright © 2018 www.massapicom. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.