X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=srcjar%2Fnet%2Fmiginfocom%2Flayout%2FConstraintParser.java;fp=srcjar%2Fnet%2Fmiginfocom%2Flayout%2FConstraintParser.java;h=f819fde2f1f2df1e2d8aebb48460b9bb60fc5bb2;hb=ec8f3cedf60fb1feed6d34de6b49f6bfa78b9dd8;hp=0000000000000000000000000000000000000000;hpb=056dad85a910551cc95e44d451a61f6b8c4dd35d;p=jalview.git diff --git a/srcjar/net/miginfocom/layout/ConstraintParser.java b/srcjar/net/miginfocom/layout/ConstraintParser.java new file mode 100644 index 0000000..f819fde --- /dev/null +++ b/srcjar/net/miginfocom/layout/ConstraintParser.java @@ -0,0 +1,1481 @@ +package net.miginfocom.layout; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map; +/* + * License (BSD): + * ============== + * + * Copyright (c) 2004, Mikael Grev, MiG InfoCom AB. (miglayout (at) miginfocom (dot) com) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright notice, this list + * of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright notice, this + * list of conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * Neither the name of the MiG InfoCom AB nor the names of its contributors may be + * used to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, + * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * @version 1.0 + * @author Mikael Grev, MiG InfoCom AB + * Date: 2006-sep-08 + */ + +/** Parses string constraints. + */ +public final class ConstraintParser +{ + private ConstraintParser() + { + } + + /** Parses the layout constraints and stores the parsed values in the transient (cache) member variables. + * @param s The String to parse. Should not be null and must be lower case and trimmed. + * @throws RuntimeException if the constraint was not valid. + * @return The parsed constraint. Never null. + */ + public static LC parseLayoutConstraint(String s) + { + LC lc = new LC(); + if (s.isEmpty()) + return lc; + + String[] parts = toTrimmedTokens(s, ','); + + // First check for "ltr" or "rtl" since that will affect the interpretation of the other constraints. + for (int i = 0; i < parts.length; i++) { + String part = parts[i]; + if (part == null) + continue; + + int len = part.length(); + if (len == 3 || len == 11) { // Optimization + if (part.equals("ltr") || part.equals("rtl") || part.equals("lefttoright") || part.equals("righttoleft")) { + lc.setLeftToRight(part.charAt(0) == 'l' ? Boolean.TRUE : Boolean.FALSE); + parts[i] = null; // So we will not try to interpret it again + } + + if (part.equals("ttb") || part.equals("btt") || part.equals("toptobottom") || part.equals("bottomtotop")) { + lc.setTopToBottom(part.charAt(0) == 't'); + parts[i] = null; // So we will not try to interpret it again + } + } + } + + for (String part : parts) { + if (part == null || part.length() == 0) + continue; + + try { + int ix = -1; + char c = part.charAt(0); + + if (c == 'w' || c == 'h') { + + ix = startsWithLenient(part, "wrap", -1, true); + if (ix > -1) { + String num = part.substring(ix).trim(); + lc.setWrapAfter(num.length() != 0 ? Integer.parseInt(num) : 0); + continue; + } + + boolean isHor = c == 'w'; + if (isHor && (part.startsWith("w ") || part.startsWith("width "))) { + String sz = part.substring(part.charAt(1) == ' ' ? 2 : 6).trim(); + lc.setWidth(parseBoundSize(sz, false, true)); + continue; + } + + if (!isHor && (part.startsWith("h ") || part.startsWith("height "))) { + String uvStr = part.substring(part.charAt(1) == ' ' ? 2 : 7).trim(); + lc.setHeight(parseBoundSize(uvStr, false, false)); + continue; + } + + if (part.length() > 5) { + String sz = part.substring(5).trim(); + if (part.startsWith("wmin ")) { + lc.minWidth(sz); + continue; + } else if (part.startsWith("wmax ")) { + lc.maxWidth(sz); + continue; + } else if (part.startsWith("hmin ")) { + lc.minHeight(sz); + continue; + } else if (part.startsWith("hmax ")) { + lc.maxHeight(sz); + continue; + } + } + + if (part.startsWith("hidemode ")) { + lc.setHideMode(Integer.parseInt(part.substring(9))); + continue; + } + } + + if (c == 'g') { + if (part.startsWith("gapx ")) { + lc.setGridGapX(parseBoundSize(part.substring(5).trim(), true, true)); + continue; + } + + if (part.startsWith("gapy ")) { + lc.setGridGapY(parseBoundSize(part.substring(5).trim(), true, false)); + continue; + } + + if (part.startsWith("gap ")) { + String[] gaps = toTrimmedTokens(part.substring(4).trim(), ' '); + lc.setGridGapX(parseBoundSize(gaps[0], true, true)); + lc.setGridGapY(gaps.length > 1 ? parseBoundSize(gaps[1], true, false) : lc.getGridGapX()); + continue; + } + } + + if (c == 'd') { + ix = startsWithLenient(part, "debug", 5, true); + if (ix > -1) { + String millis = part.substring(ix).trim(); + lc.setDebugMillis(millis.length() > 0 ? Integer.parseInt(millis) : 1000); + continue; + } + } + + if (c == 'n') { + if (part.equals("nogrid")) { + lc.setNoGrid(true); + continue; + } + + if (part.equals("nocache")) { + lc.setNoCache(true); + continue; + } + + if (part.equals("novisualpadding")) { + lc.setVisualPadding(false); + continue; + } + } + + if (c == 'f') { + if (part.equals("fill") || part.equals("fillx") || part.equals("filly")) { + lc.setFillX(part.length() == 4 || part.charAt(4) == 'x'); + lc.setFillY(part.length() == 4 || part.charAt(4) == 'y'); + continue; + } + + if (part.equals("flowy")) { + lc.setFlowX(false); + continue; + } + + if (part.equals("flowx")) { + lc.setFlowX(true); // This is the default but added for consistency + continue; + } + } + + if (c == 'i') { + ix = startsWithLenient(part, "insets", 3, true); + if (ix > -1) { + String insStr = part.substring(ix).trim(); + UnitValue[] ins = parseInsets(insStr, true); + LayoutUtil.putCCString(ins, insStr); + lc.setInsets(ins); + continue; + } + } + + if (c == 'a') { + ix = startsWithLenient(part, new String[]{"aligny", "ay"}, new int[]{6, 2}, true); + if (ix > -1) { + UnitValue align = parseUnitValueOrAlign(part.substring(ix).trim(), false, null); + if (align == UnitValue.BASELINE_IDENTITY) + throw new IllegalArgumentException("'baseline' can not be used to align the whole component group."); + lc.setAlignY(align); + continue; + } + + ix = startsWithLenient(part, new String[]{"alignx", "ax"}, new int[]{6, 2}, true); + if (ix > -1) { + lc.setAlignX(parseUnitValueOrAlign(part.substring(ix).trim(), true, null)); + continue; + } + + ix = startsWithLenient(part, "align", 2, true); + if (ix > -1) { + String[] gaps = toTrimmedTokens(part.substring(ix).trim(), ' '); + lc.setAlignX(parseUnitValueOrAlign(gaps[0], true, null)); + if (gaps.length > 1) { + UnitValue align = parseUnitValueOrAlign(gaps[1], false, null); + if (align == UnitValue.BASELINE_IDENTITY) + throw new IllegalArgumentException("'baseline' can not be used to align the whole component group."); + lc.setAlignY(align); + } + continue; + } + } + + if (c == 'p') { + if (part.startsWith("packalign ")) { + String[] packs = toTrimmedTokens(part.substring(10).trim(), ' '); + lc.setPackWidthAlign(packs[0].length() > 0 ? Float.parseFloat(packs[0]) : 0.5f); + if (packs.length > 1) + lc.setPackHeightAlign(Float.parseFloat(packs[1])); + continue; + } + + if (part.startsWith("pack ") || part.equals("pack")) { + String ps = part.substring(4).trim(); + String[] packs = toTrimmedTokens(ps.length() > 0 ? ps : "pref pref", ' '); + lc.setPackWidth(parseBoundSize(packs[0], false, true)); + if (packs.length > 1) + lc.setPackHeight(parseBoundSize(packs[1], false, false)); + + continue; + } + } + + if (lc.getAlignX() == null) { + UnitValue alignX = parseAlignKeywords(part, true); + if (alignX != null) { + lc.setAlignX(alignX); + continue; + } + } + + UnitValue alignY = parseAlignKeywords(part, false); + if (alignY != null) { + lc.setAlignY(alignY); + continue; + } + + throw new IllegalArgumentException("Unknown Constraint: '" + part + "'\n"); + + } catch (Exception ex) { + throw new IllegalArgumentException("Illegal Constraint: '" + part + "'\n" + ex.getMessage()); + } + } + +// lc = (LC) serializeTest(lc); + + return lc; + } + + /** Parses the column or rows constraints. They normally looks something like "[min:pref]rel[10px][]". + * @param s The string to parse. Not null. + * @return An array of {@link DimConstraint}s that is as many are there exist "[...]" sections in the string that is parsed. + * @throws RuntimeException if the constraint was not valid. + */ + public static AC parseRowConstraints(String s) + { + return parseAxisConstraint(s, false); + } + + /** Parses the column or rows constraints. They normally looks something like "[min:pref]rel[10px][]". + * @param s The string to parse. Not null. + * @return An array of {@link DimConstraint}s that is as many are there exist "[...]" sections in the string that is parsed. + * @throws RuntimeException if the constraint was not valid. + */ + public static AC parseColumnConstraints(String s) + { + return parseAxisConstraint(s, true); + } + + /** Parses the column or rows constraints. They normally looks something like "[min:pref]rel[10px][]". + * @param s The string to parse. Not null. + * @param isCols If this for columns rather than rows. + * @return An array of {@link DimConstraint}s that is as many are there exist "[...]" sections in the string that is parsed. + * @throws RuntimeException if the constraint was not valid. + */ + private static AC parseAxisConstraint(String s, boolean isCols) + { + s = s.trim(); + + if (s.length() == 0) + return new AC(); // Short circuit for performance. + + s = s.toLowerCase(); + + ArrayList parts = getRowColAndGapsTrimmed(s); + + BoundSize[] gaps = new BoundSize[(parts.size() >> 1) + 1]; + for (int i = 0, iSz = parts.size(), gIx = 0; i < iSz; i += 2, gIx++) + gaps[gIx] = parseBoundSize(parts.get(i), true, isCols); + + DimConstraint[] colSpecs = new DimConstraint[parts.size() >> 1]; + for (int i = 0, gIx = 0; i < colSpecs.length; i++, gIx++) { + if (gIx >= gaps.length - 1) + gIx = gaps.length - 2; + + colSpecs[i] = parseDimConstraint(parts.get((i << 1) + 1), gaps[gIx], gaps[gIx + 1], isCols); + } + + AC ac = new AC(); + ac.setConstaints(colSpecs); + +// ac = (AC) serializeTest(ac); + + return ac; + } + + /** Parses a single column or row constraint. + * @param s The single constraint to parse. May look something like "min:pref,fill,grow". Should not be null and must + * be lower case and trimmed. + * @param gapBefore The default gap "before" the column/row constraint. Can be overridden with a "gap" section within s. + * @param gapAfter The default gap "after" the column/row constraint. Can be overridden with a "gap" section within s. + * @param isCols If the constraints are column constraints rather than row constraints. + * @return A single constraint. Never null. + * @throws RuntimeException if the constraint was not valid. + */ + private static DimConstraint parseDimConstraint(String s, BoundSize gapBefore, BoundSize gapAfter, boolean isCols) + { + DimConstraint dimConstraint = new DimConstraint(); + + // Default values. + dimConstraint.setGapBefore(gapBefore); + dimConstraint.setGapAfter(gapAfter); + + String[] parts = toTrimmedTokens(s, ','); + for (int i = 0; i < parts.length; i++) { + String part = parts[i]; + try { + if (part.length() == 0) + continue; + + if (part.equals("fill")) { + dimConstraint.setFill(true); +// dimConstraint.setAlign(null); // Can not have both fill and alignment (changed for 3.5 since it can have "growy 0") + continue; + } + + if (part.equals("nogrid")) { + dimConstraint.setNoGrid(true); + continue; + } + + int ix = -1; + char c = part.charAt(0); + + if (c == 's') { + ix = startsWithLenient(part, new String[] {"sizegroup", "sg"}, new int[] {5, 2}, true); + if (ix > -1) { + dimConstraint.setSizeGroup(part.substring(ix).trim()); + continue; + } + + + ix = startsWithLenient(part, new String[] {"shrinkprio", "shp"}, new int[] {10, 3}, true); + if (ix > -1) { + dimConstraint.setShrinkPriority(Integer.parseInt(part.substring(ix).trim())); + continue; + } + + ix = startsWithLenient(part, "shrink", 6, true); + if (ix > -1) { + dimConstraint.setShrink(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + } + + if (c == 'g') { + ix = startsWithLenient(part, new String[] {"growpriority", "gp"}, new int[] {5, 2}, true); + if (ix > -1) { + dimConstraint.setGrowPriority(Integer.parseInt(part.substring(ix).trim())); + continue; + } + + ix = startsWithLenient(part, "grow", 4, true); + if (ix > -1) { + dimConstraint.setGrow(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + } + + if (c == 'a') { + ix = startsWithLenient(part, "align", 2, true); + if (ix > -1) { +// if (dimConstraint.isFill() == false) // Swallow, but ignore if fill is set. (changed for 3.5 since it can have "growy 0") + dimConstraint.setAlign(parseUnitValueOrAlign(part.substring(ix).trim(), isCols, null)); + continue; + } + } + + UnitValue align = parseAlignKeywords(part, isCols); + if (align != null) { +// if (dimConstraint.isFill() == false) // Swallow, but ignore if fill is set. (changed for 3.5 since it can have "growy 0") + dimConstraint.setAlign(align); + continue; + } + + // Only min:pref:max still left that is ok + dimConstraint.setSize(parseBoundSize(part, false, isCols)); + + } catch (Exception ex) { + throw new IllegalArgumentException("Illegal constraint: '" + part + "'\n" + ex.getMessage()); + } + } + return dimConstraint; + } + + /** Parses all component constraints and stores the parsed values in the transient (cache) member variables. + * @param constrMap The constraints as Strings. Strings must be lower case and trimmed + * @return The parsed constraints. Never null. + */ + public static Map parseComponentConstraints(Map constrMap) + { + HashMap flowConstrMap = new HashMap(); + + for (Iterator> it = constrMap.entrySet().iterator(); it.hasNext();) { + Map.Entry entry = it.next(); + flowConstrMap.put(entry.getKey(), parseComponentConstraint(entry.getValue())); + } + + return flowConstrMap; + } + + /** Parses one component constraint and returns the parsed value. + * @param s The string to parse. Must be lower case and trimmed. + * @throws RuntimeException if the constraint was not valid. + * @return The parsed constraint. Never null. + */ + public static CC parseComponentConstraint(String s) + { + CC cc = new CC(); + + if (s == null || s.isEmpty()) + return cc; + + String[] parts = toTrimmedTokens(s, ','); + + for (String part : parts) { + try { + if (part.length() == 0) + continue; + + int ix = -1; + char c = part.charAt(0); + + if (c == 'n') { + if (part.equals("north")) { + cc.setDockSide(0); + continue; + } + + if (part.equals("newline")) { + cc.setNewline(true); + continue; + } + + if (part.startsWith("newline ")) { + String gapSz = part.substring(7).trim(); + cc.setNewlineGapSize(parseBoundSize(gapSz, true, true)); + continue; + } + } + + if (c == 'f' && (part.equals("flowy") || part.equals("flowx"))) { + cc.setFlowX(part.charAt(4) == 'x' ? Boolean.TRUE : Boolean.FALSE); + continue; + } + + if (c == 's') { + ix = startsWithLenient(part, "skip", 4, true); + if (ix > -1) { + String num = part.substring(ix).trim(); + cc.setSkip(num.length() != 0 ? Integer.parseInt(num) : 1); + continue; + } + + ix = startsWithLenient(part, "split", 5, true); + if (ix > -1) { + String split = part.substring(ix).trim(); + cc.setSplit(split.length() > 0 ? Integer.parseInt(split) : LayoutUtil.INF); + continue; + } + + if (part.equals("south")) { + cc.setDockSide(2); + continue; + } + + ix = startsWithLenient(part, new String[]{"spany", "sy"}, new int[]{5, 2}, true); + if (ix > -1) { + cc.setSpanY(parseSpan(part.substring(ix).trim())); + continue; + } + + ix = startsWithLenient(part, new String[]{"spanx", "sx"}, new int[]{5, 2}, true); + if (ix > -1) { + cc.setSpanX(parseSpan(part.substring(ix).trim())); + continue; + } + + ix = startsWithLenient(part, "span", 4, true); + if (ix > -1) { + String[] spans = toTrimmedTokens(part.substring(ix).trim(), ' '); + cc.setSpanX(spans[0].length() > 0 ? Integer.parseInt(spans[0]) : LayoutUtil.INF); + cc.setSpanY(spans.length > 1 ? Integer.parseInt(spans[1]) : 1); + continue; + } + + ix = startsWithLenient(part, "shrinkx", 7, true); + if (ix > -1) { + cc.getHorizontal().setShrink(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, "shrinky", 7, true); + if (ix > -1) { + cc.getVertical().setShrink(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, "shrink", 6, false); + if (ix > -1) { + String[] shrinks = toTrimmedTokens(part.substring(ix).trim(), ' '); + cc.getHorizontal().setShrink(parseFloat(shrinks[0], ResizeConstraint.WEIGHT_100)); + if (shrinks.length > 1) + cc.getVertical().setShrink(parseFloat(shrinks[1], ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, new String[]{"shrinkprio", "shp"}, new int[]{10, 3}, true); + if (ix > -1) { + String sp = part.substring(ix).trim(); + if (sp.startsWith("x") || sp.startsWith("y")) { // To handle "gpx", "gpy", "shrinkpriorityx", shrinkpriorityy" + (sp.startsWith("x") ? cc.getHorizontal() : cc.getVertical()).setShrinkPriority(Integer.parseInt(sp.substring(2))); + } else { + String[] shrinks = toTrimmedTokens(sp, ' '); + cc.getHorizontal().setShrinkPriority(Integer.parseInt(shrinks[0])); + if (shrinks.length > 1) + cc.getVertical().setShrinkPriority(Integer.parseInt(shrinks[1])); + } + continue; + } + + ix = startsWithLenient(part, new String[]{"sizegroupx", "sizegroupy", "sgx", "sgy"}, new int[]{9, 9, 2, 2}, true); + if (ix > -1) { + String sg = part.substring(ix).trim(); + char lc = part.charAt(ix - 1); + if (lc != 'y') + cc.getHorizontal().setSizeGroup(sg); + if (lc != 'x') + cc.getVertical().setSizeGroup(sg); + continue; + } + } + + if (c == 'g') { + ix = startsWithLenient(part, "growx", 5, true); + if (ix > -1) { + cc.getHorizontal().setGrow(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, "growy", 5, true); + if (ix > -1) { + cc.getVertical().setGrow(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, "grow", 4, false); + if (ix > -1) { + String[] grows = toTrimmedTokens(part.substring(ix).trim(), ' '); + cc.getHorizontal().setGrow(parseFloat(grows[0], ResizeConstraint.WEIGHT_100)); + cc.getVertical().setGrow(parseFloat(grows.length > 1 ? grows[1] : "", ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, new String[]{"growprio", "gp"}, new int[]{8, 2}, true); + if (ix > -1) { + String gp = part.substring(ix).trim(); + char c0 = gp.length() > 0 ? gp.charAt(0) : ' '; + if (c0 == 'x' || c0 == 'y') { // To handle "gpx", "gpy", "growpriorityx", growpriorityy" + (c0 == 'x' ? cc.getHorizontal() : cc.getVertical()).setGrowPriority(Integer.parseInt(gp.substring(2))); + } else { + String[] grows = toTrimmedTokens(gp, ' '); + cc.getHorizontal().setGrowPriority(Integer.parseInt(grows[0])); + if (grows.length > 1) + cc.getVertical().setGrowPriority(Integer.parseInt(grows[1])); + } + continue; + } + + if (part.startsWith("gap")) { + BoundSize[] gaps = parseGaps(part); // Changes order!! + if (gaps[0] != null) + cc.getVertical().setGapBefore(gaps[0]); + if (gaps[1] != null) + cc.getHorizontal().setGapBefore(gaps[1]); + if (gaps[2] != null) + cc.getVertical().setGapAfter(gaps[2]); + if (gaps[3] != null) + cc.getHorizontal().setGapAfter(gaps[3]); + continue; + } + } + + if (c == 'a') { + ix = startsWithLenient(part, new String[]{"aligny", "ay"}, new int[]{6, 2}, true); + if (ix > -1) { + cc.getVertical().setAlign(parseUnitValueOrAlign(part.substring(ix).trim(), false, null)); + continue; + } + + ix = startsWithLenient(part, new String[]{"alignx", "ax"}, new int[]{6, 2}, true); + if (ix > -1) { + cc.getHorizontal().setAlign(parseUnitValueOrAlign(part.substring(ix).trim(), true, null)); + continue; + } + + ix = startsWithLenient(part, "align", 2, true); + if (ix > -1) { + String[] gaps = toTrimmedTokens(part.substring(ix).trim(), ' '); + cc.getHorizontal().setAlign(parseUnitValueOrAlign(gaps[0], true, null)); + if (gaps.length > 1) + cc.getVertical().setAlign(parseUnitValueOrAlign(gaps[1], false, null)); + continue; + } + } + + if ((c == 'x' || c == 'y') && part.length() > 2) { + char c2 = part.charAt(1); + if (c2 == ' ' || (c2 == '2' && part.charAt(2) == ' ')) { + if (cc.getPos() == null) { + cc.setPos(new UnitValue[4]); + } else if (cc.isBoundsInGrid() == false) { + throw new IllegalArgumentException("Cannot combine 'position' with 'x/y/x2/y2' keywords."); + } + + int edge = (c == 'x' ? 0 : 1) + (c2 == '2' ? 2 : 0); + UnitValue[] pos = cc.getPos(); + pos[edge] = parseUnitValue(part.substring(2).trim(), null, c == 'x'); + cc.setPos(pos); + cc.setBoundsInGrid(true); + continue; + } + } + + if (c == 'c') { + ix = startsWithLenient(part, "cell", 4, true); + if (ix > -1) { + String[] grs = toTrimmedTokens(part.substring(ix).trim(), ' '); + if (grs.length < 2) + throw new IllegalArgumentException("At least two integers must follow " + part); + cc.setCellX(Integer.parseInt(grs[0])); + cc.setCellY(Integer.parseInt(grs[1])); + if (grs.length > 2) + cc.setSpanX(Integer.parseInt(grs[2])); + if (grs.length > 3) + cc.setSpanY(Integer.parseInt(grs[3])); + continue; + } + } + + if (c == 'p') { + ix = startsWithLenient(part, "pos", 3, true); + if (ix > -1) { + if (cc.getPos() != null && cc.isBoundsInGrid()) + throw new IllegalArgumentException("Can not combine 'pos' with 'x/y/x2/y2' keywords."); + + String[] pos = toTrimmedTokens(part.substring(ix).trim(), ' '); + UnitValue[] bounds = new UnitValue[4]; + for (int j = 0; j < pos.length; j++) + bounds[j] = parseUnitValue(pos[j], null, j % 2 == 0); + + if (bounds[0] == null && bounds[2] == null || bounds[1] == null && bounds[3] == null) + throw new IllegalArgumentException("Both x and x2 or y and y2 can not be null!"); + + cc.setPos(bounds); + cc.setBoundsInGrid(false); + continue; + } + + ix = startsWithLenient(part, "pad", 3, true); + if (ix > -1) { + UnitValue[] p = parseInsets(part.substring(ix).trim(), false); + cc.setPadding(new UnitValue[]{ + p[0], + p.length > 1 ? p[1] : null, + p.length > 2 ? p[2] : null, + p.length > 3 ? p[3] : null}); + continue; + } + + ix = startsWithLenient(part, "pushx", 5, true); + if (ix > -1) { + cc.setPushX(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, "pushy", 5, true); + if (ix > -1) { + cc.setPushY(parseFloat(part.substring(ix).trim(), ResizeConstraint.WEIGHT_100)); + continue; + } + + ix = startsWithLenient(part, "push", 4, false); + if (ix > -1) { + String[] pushs = toTrimmedTokens(part.substring(ix).trim(), ' '); + cc.setPushX(parseFloat(pushs[0], ResizeConstraint.WEIGHT_100)); + cc.setPushY(parseFloat(pushs.length > 1 ? pushs[1] : "", ResizeConstraint.WEIGHT_100)); + continue; + } + } + + if (c == 't') { + ix = startsWithLenient(part, "tag", 3, true); + if (ix > -1) { + cc.setTag(part.substring(ix).trim()); + continue; + } + } + + if (c == 'w' || c == 'h') { + if (part.equals("wrap")) { + cc.setWrap(true); + continue; + } + + if (part.startsWith("wrap ")) { + String gapSz = part.substring(5).trim(); + cc.setWrapGapSize(parseBoundSize(gapSz, true, true)); + continue; + } + + boolean isHor = c == 'w'; + if (isHor && (part.startsWith("w ") || part.startsWith("width "))) { + String uvStr = part.substring(part.charAt(1) == ' ' ? 2 : 6).trim(); + cc.getHorizontal().setSize(parseBoundSize(uvStr, false, true)); + continue; + } + + if (!isHor && (part.startsWith("h ") || part.startsWith("height "))) { + String uvStr = part.substring(part.charAt(1) == ' ' ? 2 : 7).trim(); + cc.getVertical().setSize(parseBoundSize(uvStr, false, false)); + continue; + } + + if (part.startsWith("wmin ") || part.startsWith("wmax ") || part.startsWith("hmin ") || part.startsWith("hmax ")) { + String uvStr = part.substring(5).trim(); + if (uvStr.length() > 0) { + UnitValue uv = parseUnitValue(uvStr, null, isHor); + boolean isMin = part.charAt(3) == 'n'; + DimConstraint dc = isHor ? cc.getHorizontal() : cc.getVertical(); + dc.setSize(new BoundSize( + isMin ? uv : dc.getSize().getMin(), + dc.getSize().getPreferred(), + isMin ? (dc.getSize().getMax()) : uv, + uvStr + )); + continue; + } + } + + if (part.equals("west")) { + cc.setDockSide(1); + continue; + } + + if (part.startsWith("hidemode ")) { + cc.setHideMode(Integer.parseInt(part.substring(9))); + continue; + } + } + + if (c == 'i' && part.startsWith("id ")) { + cc.setId(part.substring(3).trim()); + int dIx = cc.getId().indexOf('.'); + if (dIx == 0 || dIx == cc.getId().length() - 1) + throw new IllegalArgumentException("Dot must not be first or last!"); + + continue; + } + + if (c == 'e') { + if (part.equals("east")) { + cc.setDockSide(3); + continue; + } + + if (part.equals("external")) { + cc.setExternal(true); + continue; + } + + ix = startsWithLenient(part, new String[]{"endgroupx", "endgroupy", "egx", "egy"}, new int[]{-1, -1, -1, -1}, true); + if (ix > -1) { + String sg = part.substring(ix).trim(); + char lc = part.charAt(ix - 1); + DimConstraint dc = (lc == 'x' ? cc.getHorizontal() : cc.getVertical()); + dc.setEndGroup(sg); + continue; + } + } + + if (c == 'd') { + if (part.equals("dock north")) { + cc.setDockSide(0); + continue; + } + if (part.equals("dock west")) { + cc.setDockSide(1); + continue; + } + if (part.equals("dock south")) { + cc.setDockSide(2); + continue; + } + if (part.equals("dock east")) { + cc.setDockSide(3); + continue; + } + + if (part.equals("dock center")) { + cc.getHorizontal().setGrow(100f); + cc.getVertical().setGrow(100f); + cc.setPushX(100f); + cc.setPushY(100f); + continue; + } + } + + if (c == 'v') { + ix = startsWithLenient(part, new String[] {"visualpadding", "vp"}, new int[] {3, 2}, true); + if (ix > -1) { + UnitValue[] p = parseInsets(part.substring(ix).trim(), false); + cc.setVisualPadding(new UnitValue[] { + p[0], + p.length > 1 ? p[1] : null, + p.length > 2 ? p[2] : null, + p.length > 3 ? p[3] : null}); + continue; + } + } + + UnitValue horAlign = parseAlignKeywords(part, true); + if (horAlign != null) { + cc.getHorizontal().setAlign(horAlign); + continue; + } + + UnitValue verAlign = parseAlignKeywords(part, false); + if (verAlign != null) { + cc.getVertical().setAlign(verAlign); + continue; + } + + throw new IllegalArgumentException("Unknown keyword."); + + } catch (Exception ex) { + throw new IllegalArgumentException("Error parsing Constraint: '" + part + "'", ex); + } + } + +// cc = (CC) serializeTest(cc); + + return cc; + } + + /** Parses insets which consists of 1-4 UnitValues. + * @param s The string to parse. E.g. "10 10 10 10" or "20". If less than 4 groups the last will be used for the missing. + * @param acceptPanel If "panel" and "dialog" should be accepted. They are used to access platform defaults. + * @return An array of length 4 with the parsed insets. + * @throws IllegalArgumentException if the parsing could not be done. + */ + public static UnitValue[] parseInsets(String s, boolean acceptPanel) + { + if (s.length() == 0 || s.equals("dialog") || s.equals("panel")) { + if (acceptPanel == false) + throw new IllegalArgumentException("Insets now allowed: " + s + "\n"); + + boolean isPanel = s.startsWith("p"); + UnitValue[] ins = new UnitValue[4]; + for (int j = 0; j < 4; j++) + ins[j] = isPanel ? PlatformDefaults.getPanelInsets(j) : PlatformDefaults.getDialogInsets(j); + + return ins; + } else { + String[] insS = toTrimmedTokens(s, ' '); + UnitValue[] ins = new UnitValue[4]; + for (int j = 0; j < 4; j++) { + UnitValue insSz = parseUnitValue(insS[j < insS.length ? j : insS.length - 1], UnitValue.ZERO, j % 2 == 1); + ins[j] = insSz != null ? insSz : PlatformDefaults.getPanelInsets(j); + } + return ins; + } + } + + /** Parses gaps. + * @param s The string that contains gap information. Should start with "gap". + * @return The gaps as specified in s. Indexed: [top,left,bottom,right][min,pref,max] or + * [before,after][min,pref,max] if oneDim is true. + */ + private static BoundSize[] parseGaps(String s) + { + BoundSize[] ret = new BoundSize[4]; + + int ix = startsWithLenient(s, "gaptop", -1, true); + if (ix > -1) { + s = s.substring(ix).trim(); + ret[0] = parseBoundSize(s, true, false); + return ret; + } + + ix = startsWithLenient(s, "gapleft", -1, true); + if (ix > -1) { + s = s.substring(ix).trim(); + ret[1] = parseBoundSize(s, true, true); + return ret; + } + + ix = startsWithLenient(s, "gapbottom", -1, true); + if (ix > -1) { + s = s.substring(ix).trim(); + ret[2] = parseBoundSize(s, true, false); + return ret; + } + + ix = startsWithLenient(s, "gapright", -1, true); + if (ix > -1) { + s = s.substring(ix).trim(); + ret[3] = parseBoundSize(s, true, true); + return ret; + } + + ix = startsWithLenient(s, "gapbefore", -1, true); + if (ix > -1) { + s = s.substring(ix).trim(); + ret[1] = parseBoundSize(s, true, true); + return ret; + } + + ix = startsWithLenient(s, "gapafter", -1, true); + if (ix > -1) { + s = s.substring(ix).trim(); + ret[3] = parseBoundSize(s, true, true); + return ret; + } + + ix = startsWithLenient(s, new String[] {"gapx", "gapy"}, null, true); + if (ix > -1) { + boolean x = s.charAt(3) == 'x'; + String[] gaps = toTrimmedTokens(s.substring(ix).trim(), ' '); + ret[x ? 1 : 0] = parseBoundSize(gaps[0], true, x); + if (gaps.length > 1) + ret[x ? 3 : 2] = parseBoundSize(gaps[1], true, !x); + return ret; + } + + ix = startsWithLenient(s, "gap ", 1, true); + if (ix > -1) { + String[] gaps = toTrimmedTokens(s.substring(ix).trim(), ' '); + + ret[1] = parseBoundSize(gaps[0], true, true); // left + if (gaps.length > 1) { + ret[3] = parseBoundSize(gaps[1], true, false); // right + if (gaps.length > 2) { + ret[0] = parseBoundSize(gaps[2], true, true); // top + if (gaps.length > 3) + ret[2] = parseBoundSize(gaps[3], true, false); // bottom + } + } + return ret; + } + + throw new IllegalArgumentException("Unknown Gap part: '" + s + "'"); + } + + private static int parseSpan(String s) + { + return s.length() > 0 ? Integer.parseInt(s) : LayoutUtil.INF; + } + + private static Float parseFloat(String s, Float nullVal) + { + return s.length() > 0 ? new Float(Float.parseFloat(s)) : nullVal; + } + + /** Parses a single "min:pref:max" value. May look something like "10px:20lp:30%" or "pref!". + * @param s The string to parse. Not null. + * @param isGap If this bound size is a gap (different empty string handling). + * @param isHor If the size is for the horizontal dimension. + * @return A bound size that may be null if the string was "null", "n" or null. + */ + public static BoundSize parseBoundSize(String s, boolean isGap, boolean isHor) + { + if (s.length() == 0 || s.equals("null") || s.equals("n")) + return null; + + String cs = s; + boolean push = false; + if (s.endsWith("push")) { + push = true; + int l = s.length(); + s = s.substring(0, l - (s.endsWith(":push") ? 5 : 4)); + if (s.length() == 0) + return new BoundSize(null, null, null, true, cs); + } + + String[] sizes = toTrimmedTokens(s, ':'); + String s0 = sizes[0]; + + if (sizes.length == 1) { + boolean hasEM = s0.endsWith("!"); + if (hasEM) + s0 = s0.substring(0, s0.length() - 1); + UnitValue uv = parseUnitValue(s0, null, isHor); + return new BoundSize(((isGap || hasEM) ? uv : null), uv, (hasEM ? uv : null), push, cs); + + } else if (sizes.length == 2) { + return new BoundSize(parseUnitValue(s0, null, isHor), parseUnitValue(sizes[1], null, isHor), null, push, cs); + } else if (sizes.length == 3) { + return new BoundSize(parseUnitValue(s0, null, isHor), parseUnitValue(sizes[1], null, isHor), parseUnitValue(sizes[2], null, isHor), push, cs); + } else { + throw new IllegalArgumentException("Min:Preferred:Max size section must contain 0, 1 or 2 colons. '" + cs + "'"); + } + } + + /** Parses a single unit value that may also be an alignment as parsed by {@link #parseAlignKeywords(String, boolean)}. + * @param s The string to parse. Not null. May look something like "10px" or "5dlu". + * @param isHor If the value is for the horizontal dimension. + * @param emptyReplacement A replacement if s is empty. May be null. + * @return The parsed unit value. May be null. + */ + public static UnitValue parseUnitValueOrAlign(String s, boolean isHor, UnitValue emptyReplacement) + { + if (s.length() == 0) + return emptyReplacement; + + UnitValue align = parseAlignKeywords(s, isHor); + if (align != null) + return align; + + return parseUnitValue(s, emptyReplacement, isHor); + } + + /** Parses a single unit value. E.g. "10px" or "5in" + * @param s The string to parse. Not null. May look something like "10px" or "5dlu". + * @param isHor If the value is for the horizontal dimension. + * @return The parsed unit value. null is empty string, + */ + public static UnitValue parseUnitValue(String s, boolean isHor) + { + return parseUnitValue(s, null, isHor); + } + + /** Parses a single unit value. + * @param s The string to parse. May be null. May look something like "10px" or "5dlu". + * @param emptyReplacement A replacement s is empty or null. May be null. + * @param isHor If the value is for the horizontal dimension. + * @return The parsed unit value. May be null. + */ + private static UnitValue parseUnitValue(String s, UnitValue emptyReplacement, boolean isHor) + { + if (s == null || s.length() == 0) + return emptyReplacement; + + String cs = s; // Save creation string. + char c0 = s.charAt(0); + + // Remove start and end parentheses, if there. + if (c0 == '(' && s.charAt(s.length() - 1) == ')') + s = s.substring(1, s.length() - 1); + + if (c0 == 'n' && (s.equals("null") || s.equals("n"))) + return null; + + if (c0 == 'i' && s.equals("inf")) + return UnitValue.INF; + + int oper = getOper(s); + boolean inline = oper == UnitValue.ADD || oper == UnitValue.SUB || oper == UnitValue.MUL || oper == UnitValue.DIV; + + if (oper != UnitValue.STATIC) { // It is a multi-value + + String[] uvs; + if (inline == false) { // If the format is of type "opr(xxx,yyy)" (compared to in-line "10%+15px") + String sub = s.substring(4, s.length() - 1).trim(); + uvs = toTrimmedTokens(sub, ','); + if (uvs.length == 1) + return parseUnitValue(sub, null, isHor); + } else { + char delim; + if (oper == UnitValue.ADD) { + delim = '+'; + } else if (oper == UnitValue.SUB) { + delim = '-'; + } else if (oper == UnitValue.MUL) { + delim = '*'; + } else { // div left + delim = '/'; + } + uvs = toTrimmedTokens(s, delim); + if (uvs.length > 2) { // More than one +-*/. + String last = uvs[uvs.length - 1]; + String first = s.substring(0, s.length() - last.length() - 1); + uvs = new String[] {first, last}; + } + } + + if (uvs.length != 2) + throw new IllegalArgumentException("Malformed UnitValue: '" + s + "'"); + + UnitValue sub1 = parseUnitValue(uvs[0], null, isHor); + UnitValue sub2 = parseUnitValue(uvs[1], null, isHor); + + if (sub1 == null || sub2 == null) + throw new IllegalArgumentException("Malformed UnitValue. Must be two sub-values: '" + s + "'"); + + return new UnitValue(isHor, oper, sub1, sub2, cs); + } else { + try { + String[] numParts = getNumTextParts(s); + float value = numParts[0].length() > 0 ? Float.parseFloat(numParts[0]) : 1; // e.g. "related" has no number part.. + + return new UnitValue(value, numParts[1], isHor, oper, cs); + + } catch(Exception e) { + throw new IllegalArgumentException("Malformed UnitValue: '" + s + "'", e); + } + } + } + + /** Parses alignment keywords and returns the appropriate UnitValue. + * @param s The string to parse. Not null. + * @param isHor If alignments for horizontal is checked. false means vertical. + * @return The unit value or null if not recognized (no exception). + */ + static UnitValue parseAlignKeywords(String s, boolean isHor) + { + if (startsWithLenient(s, "center", 1, false) != -1) + return UnitValue.CENTER; + + if (isHor) { + if (startsWithLenient(s, "left", 1, false) != -1) + return UnitValue.LEFT; + + if (startsWithLenient(s, "right", 1, false) != -1) + return UnitValue.RIGHT; + + if (startsWithLenient(s, "leading", 4, false) != -1) + return UnitValue.LEADING; + + if (startsWithLenient(s, "trailing", 5, false) != -1) + return UnitValue.TRAILING; + + if (startsWithLenient(s, "label", 5, false) != -1) + return UnitValue.LABEL; + + } else { + + if (startsWithLenient(s, "baseline", 4, false) != -1) + return UnitValue.BASELINE_IDENTITY; + + if (startsWithLenient(s, "top", 1, false) != -1) + return UnitValue.TOP; + + if (startsWithLenient(s, "bottom", 1, false) != -1) + return UnitValue.BOTTOM; + } + + return null; + } + + /** Splits a text-number combination such as "hello 10.0" into {"hello", "10.0"}. + * @param s The string to split. Not null. Needs be be reasonably formatted since the method + * only finds the first 0-9 or . and cuts the string in half there. + * @return Always length 2 and no null elements. Elements are "" if no part found. + */ + private static String[] getNumTextParts(String s) + { + for (int i = 0, iSz = s.length(); i < iSz; i++) { + char c = s.charAt(i); + if (c == ' ') + throw new IllegalArgumentException("Space in UnitValue: '" + s + "'"); + + if ((c < '0' || c > '9') && c != '.' && c != '-') + return new String[] {s.substring(0, i).trim(), s.substring(i).trim()}; + } + return new String[] {s, ""}; + } + + /** Returns the operation depending on the start character. + * @param s The string to check. Not null. + * @return E.g. UnitValue.ADD, UnitValue.SUB or UnitValue.STATIC. Returns negative value for in-line operations. + */ + private static int getOper(String s) + { + int len = s.length(); + if (len < 3) + return UnitValue.STATIC; + + if (len > 5 && s.charAt(3) == '(' && s.charAt(len - 1) == ')') { + if (s.startsWith("min(")) + return UnitValue.MIN; + + if (s.startsWith("max(")) + return UnitValue.MAX; + + if (s.startsWith("mid(")) + return UnitValue.MID; + } + + // Try in-line add/sub. E.g. "pref+10px". + for (int j = 0; j < 2; j++) { // First +- then */ (precedence) + for (int i = len - 1, p = 0; i > 0; i--) { + char c = s.charAt(i); + if (c == ')') { + p++; + } else if (c == '(') { + p--; + } else if (p == 0) { + if (j == 0) { + if (c == '+') + return UnitValue.ADD; + if (c == '-') + return UnitValue.SUB; + } else { + if (c == '*') + return UnitValue.MUL; + if (c == '/') + return UnitValue.DIV; + } + } + } + } + return UnitValue.STATIC; + } + + /** Returns if a string shares at least a specified numbers starting characters with a number of matches. + *

+ * This method just exercise {@link #startsWithLenient(String, String, int, boolean)} with every one of + * matches and minChars. + * @param s The string to check. Not null. + * @param matches A number of possible starts for s. + * @param minChars The minimum number of characters to match for every element in matches. Needs + * to be of same length as matches. Can be null. + * @param acceptTrailing If after the required number of characters are matched on recognized characters that are not + * in one of the the matches string should be accepted. For instance if "abczz" should be matched with + * "abcdef" and min chars 3. + * @return The index of the first unmatched character if minChars was reached or -1 if a match was not + * found. + */ + private static int startsWithLenient(String s, String[] matches, int[] minChars, boolean acceptTrailing) + { + for (int i = 0; i < matches.length; i++) { + int minChar = minChars != null ? minChars[i] : -1; + int ix = startsWithLenient(s, matches[i], minChar, acceptTrailing); + if (ix > -1) + return ix; + } + return -1; + } + + /** Returns if a string shares at least a specified numbers starting characters with a match. + * @param s The string to check. Not null and must be trimmed. + * @param match The possible start for s. Not null and must be trimmed. + * @param minChars The mimimum number of characters to match to s for it this to be considered a match. -1 means + * the full length of match. + * @param acceptTrailing If after the required number of charecters are matched unrecognized characters that are not + * in one of the the matches string should be accepted. For instance if "abczz" should be matched with + * "abcdef" and min chars 3. + * @return The index of the first unmatched character if minChars was reached or -1 if a match was not + * found. + */ + private static int startsWithLenient(String s, String match, int minChars, boolean acceptTrailing) + { + if (s.charAt(0) != match.charAt(0)) // Fast sanity check. + return -1; + + if (minChars == -1) + minChars = match.length(); + + int sSz = s.length(); + if (sSz < minChars) + return -1; + + int mSz = match.length(); + int sIx = 0; + for (int mIx = 0; mIx < mSz; sIx++, mIx++) { + while (sIx < sSz && (s.charAt(sIx) == ' ' || s.charAt(sIx) == '_')) // Disregard spaces and _ + sIx++; + + if (sIx >= sSz || s.charAt(sIx) != match.charAt(mIx)) + return mIx >= minChars && (acceptTrailing || sIx >= sSz) && (sIx >= sSz || s.charAt(sIx - 1) == ' ') ? sIx : -1; + } + return sIx >= sSz || acceptTrailing ||s.charAt(sIx) == ' ' ? sIx : -1; + } + + /** Parses a string and returns it in those parts of the string that are separated with a sep character. + *

+ * separator characters within parentheses will not be counted or handled in any way, whatever the depth. + *

+ * A space separator will be a hit to one or more spaces and thus not return empty strings. + * @param s The string to parse. If it starts and/or ends with a sep the first and/or last element returned will be "". If + * two sep are next to each other and empty element will be "between" the periods. The sep themselves will never be returned. + * @param sep The separator char. + * @return Those parts of the string that are separated with sep. Never null and at least of size 1 + * @since 6.7.2 Changed so more than one space in a row works as one space. + */ + private static String[] toTrimmedTokens(String s, char sep) + { + int toks = 0, sSize = s.length(); + boolean disregardDoubles = sep == ' '; + + // Count the sep:s + int p = 0; + for(int i = 0; i < sSize; i++) { + char c = s.charAt(i); + if (c == '(') { + p++; + } else if (c == ')') { + p--; + } else if (p == 0 && c == sep) { + toks++; + while (disregardDoubles && i < sSize - 1 && s.charAt(i + 1) == ' ') + i++; + } + if (p < 0) + throw new IllegalArgumentException("Unbalanced parentheses: '" + s + "'"); + } + if (p != 0) + throw new IllegalArgumentException("Unbalanced parentheses: '" + s + "'"); + + if (toks == 0) + return new String [] {s.trim()}; + + String[] retArr = new String[toks + 1]; + + int st = 0, pNr = 0; + p = 0; + for (int i = 0; i < sSize; i++) { + + char c = s.charAt(i); + if (c == '(') { + p++; + } else if (c == ')') { + p--; + } else if (p == 0 && c == sep) { + retArr[pNr++] = s.substring(st, i).trim(); + st = i + 1; + while (disregardDoubles && i < sSize - 1 && s.charAt(i + 1) == ' ') + i++; + } + } + + retArr[pNr++] = s.substring(st, sSize).trim(); + return retArr; + } + + /** Parses "AAA[BBB]CCC[DDD]EEE" into {"AAA", "BBB", "CCC", "DDD", "EEE", "FFF"}. Handles empty parts. Will always start and end outside + * a [] block so that the number of returned elemets will always be uneven and at least of length 3. + *

+ * "|" is interpreted as "][". + * @param s The string. Might be "" but not null. Should be trimmed. + * @return The string divided into elements. Never null and at least of length 3. + * @throws IllegalArgumentException If a [] mismatch of some kind. (If not same [ as ] count or if the interleave.) + */ + private static ArrayList getRowColAndGapsTrimmed(String s) + { + if (s.indexOf('|') != -1) + s = s.replaceAll("\\|", "]["); + + ArrayList retList = new ArrayList(Math.max(s.length() >> 2 + 1, 3)); // Approx return length. + int s0 = 0, s1 = 0; // '[' and ']' count. + int st = 0; // Start of "next token to add". + for (int i = 0, iSz = s.length(); i < iSz; i++) { + char c = s.charAt(i); + if (c == '[') { + s0++; + } else if (c == ']') { + s1++; + } else { + continue; + } + + if (s0 != s1 && (s0 - 1) != s1) + break; // Wrong [ or ] found. Break for throw. + + retList.add(s.substring(st, i).trim()); + st = i + 1; + } + if (s0 != s1) + throw new IllegalArgumentException("'[' and ']' mismatch in row/column format string: " + s); + + if (s0 == 0) { + retList.add(""); + retList.add(s); + retList.add(""); + } else if (retList.size() % 2 == 0) { + retList.add(s.substring(st, s.length())); + } + + return retList; + } + + /** Makes null "", trims and converts to lower case. + * @param s The string + * @return Not null. + */ + public static String prepare(String s) + { + return s != null ? s.trim().toLowerCase() : ""; + } + +// /** Tests to serialize and deserialize the object with both XMLEncoder/Decoder and through Serializable +// * @param o The object to serialize +// * @return The same object after a tri through the process. +// */ +// public static final Object serializeTest(Object o) +// { +// try { +// ByteArrayOutputStream barr = new ByteArrayOutputStream(); +// XMLEncoder enc = new XMLEncoder(barr); +// enc.writeObject(o); +// enc.close(); +// +// XMLDecoder dec = new XMLDecoder(new ByteArrayInputStream(barr.toByteArray())); +// o = dec.readObject(); +// dec.close(); +// } catch (Exception e) { +// e.printStackTrace(); +// } +// +// try { +// ByteArrayOutputStream barr = new ByteArrayOutputStream(); +// ObjectOutputStream oos = new ObjectOutputStream(barr); +// oos.writeObject(o); +// oos.close(); +// +// ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(barr.toByteArray())); +// o = ois.readObject(); +// ois.close(); +// } catch (Exception e) { +// e.printStackTrace(); +// } +// +// return o; +// } +}