Android Open Source - RemindEm Clean Rtf

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License

The source code is released under:

MIT License

Java Source Code

package com.brandtapps.remindem.extras;
/* ww w  . j  ava  2s . co m*/
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class CleanRtf {

  //http://stackoverflow.com/questions/188545/regular-expression-for-extracting-text-from-an-rtf-string
  
  public static String cleanRtf(String text) {

    Pattern pattern = Pattern.compile("\\([a-z]{1,32})(-?[0-9]{1,10})?[ ]?|\\'([0-9a-f]{2})|\\([^a-z])|([{}])|[\r\n]+|(.)", Pattern.CASE_INSENSITIVE);

    List<String> destinations = new ArrayList<>(Arrays.asList("aftncn", "aftnsep", "aftnsepc", "annotation", "atnauthor", "atndate", "atnicn", "atnid",
        "atnparent", "atnref", "atntime", "atrfend", "atrfstart", "author", "background", "bkmkend", "bkmkstart", "blipuid", "buptim", "category",
        "colorschememapping", "colortbl", "comment", "company", "creatim", "datafield", "datastore", "defchp", "defpap", "do", "doccomm", "docvar",
        "dptxbxtext", "ebcend", "ebcstart", "factoidname", "falt", "fchars", "ffdeftext", "ffentrymcr", "ffexitmcr", "ffformat", "ffhelptext", "ffl",
        "ffname", "ffstattext", "field", "file", "filetbl", "fldinst", "fldrslt", "fldtype", "fname", "fontemb", "fontfile", "fonttbl", "footer",
        "footerf", "footerl", "footerr", "footnote", "formfield", "ftncn", "ftnsep", "ftnsepc", "g", "generator", "gridtbl", "header", "headerf",
        "headerl", "headerr", "hl", "hlfr", "hlinkbase", "hlloc", "hlsrc", "hsv", "htmltag", "info", "keycode", "keywords", "latentstyles", "lchars",
        "levelnumbers", "leveltext", "lfolevel", "linkval", "list", "listlevel", "listname", "listoverride", "listoverridetable", "listpicture",
        "liststylename", "listtable", "listtext", "lsdlockedexcept", "macc", "maccPr", "mailmerge", "maln", "malnScr", "manager", "margPr", "mbar",
        "mbarPr", "mbaseJc", "mbegChr", "mborderBox", "mborderBoxPr", "mbox", "mboxPr", "mchr", "mcount", "mctrlPr", "md", "mdeg", "mdegHide", "mden",
        "mdiff", "mdPr", "me", "mendChr", "meqArr", "meqArrPr", "mf", "mfName", "mfPr", "mfunc", "mfuncPr", "mgroupChr", "mgroupChrPr", "mgrow",
        "mhideBot", "mhideLeft", "mhideRight", "mhideTop", "mhtmltag", "mlim", "mlimloc", "mlimlow", "mlimlowPr", "mlimupp", "mlimuppPr", "mm",
        "mmaddfieldname", "mmath", "mmathPict", "mmathPr", "mmaxdist", "mmc", "mmcJc", "mmconnectstr", "mmconnectstrdata", "mmcPr", "mmcs",
        "mmdatasource", "mmheadersource", "mmmailsubject", "mmodso", "mmodsofilter", "mmodsofldmpdata", "mmodsomappedname", "mmodsoname",
        "mmodsorecipdata", "mmodsosort", "mmodsosrc", "mmodsotable", "mmodsoudl", "mmodsoudldata", "mmodsouniquetag", "mmPr", "mmquery", "mmr",
        "mnary", "mnaryPr", "mnoBreak", "mnum", "mobjDist", "moMath", "moMathPara", "moMathParaPr", "mopEmu", "mphant", "mphantPr", "mplcHide", "mpos",
        "mr", "mrad", "mradPr", "mrPr", "msepChr", "mshow", "mshp", "msPre", "msPrePr", "msSub", "msSubPr", "msSubSup", "msSubSupPr", "msSup",
        "msSupPr", "mstrikeBLTR", "mstrikeH", "mstrikeTLBR", "mstrikeV", "msub", "msubHide", "msup", "msupHide", "mtransp", "mtype", "mvertJc",
        "mvfmf", "mvfml", "mvtof", "mvtol", "mzeroAsc", "mzeroDesc", "mzeroWid", "nesttableprops", "nextfile", "nonesttables", "objalias", "objclass",
        "objdata", "object", "objname", "objsect", "objtime", "oldcprops", "oldpprops", "oldsprops", "oldtprops", "oleclsid", "operator", "panose",
        "password", "passwordhash", "pgp", "pgptbl", "picprop", "pict", "pn", "pnseclvl", "pntext", "pntxta", "pntxtb", "printim", "private",
        "propname", "protend", "protstart", "protusertbl", "pxe", "result", "revtbl", "revtim", "rsidtbl", "rxe", "shp", "shpgrp", "shpinst",
        "shppict", "shprslt", "shptxt", "sn", "sp", "staticval", "stylesheet", "subject", "sv", "svb", "tc", "template", "themedata", "title", "txe",
        "d", "pr", "serprops", "wgrffmtfilter", "windowcaption", "writereservation", "writereservhash", "xe", "xform", "xmlattrname", "xmlattrvalue",
        "xmlclose", "xmlname", "xmlnstbl", "xmlopen"));

    // Translation of some special characters.
    HashMap<String, String> specialChars = new HashMap<String, String>();
    specialChars.put("par", "\n");
    specialChars.put("sect", "\n\n");
    specialChars.put("page", "\n\n");
    specialChars.put("line", "\n");
    specialChars.put("tab", "\t");
    specialChars.put("emdash", "\u2014");
    specialChars.put("endash", "\u2013");
    specialChars.put("emspace", "\u2003");
    specialChars.put("enspace", "\u2002");
    specialChars.put("qmspace", "\u2005");
    specialChars.put("bullet", "\u2022");
    specialChars.put("lquote", "\u2018");
    specialChars.put("rquote", "\u2019");
    specialChars.put("ldblquote", "\201C");
    specialChars.put("rdblquote", "\u201D");

    StackSpecial stack = new StackSpecial();
    Boolean ignorable = false; // Whether this group (and all inside it) are
                  // "ignorable".
    int ucskip = 1; // Number of ASCII characters to skip after a unicode
            // character.
    int curskip = 0; // Number of ASCII characters left to skip
    ArrayList<String> out = new ArrayList<String>(); // Output buffer.
    Matcher matcher = pattern.matcher(text);
    while (matcher.find()) {
      String word = matcher.group(1);
      String arg = matcher.group(2);
      String hex = matcher.group(3);
      String chr = matcher.group(4);
      String brace = matcher.group(5);
      String tchar = matcher.group(6);
      if (brace != null) {
        curskip = 0;
        if (brace.equals("{")) {
          // Push state
          stack.push(new Special(ucskip, ignorable));
        } else if (brace.equals("}")) {
          // Pop state
          Special temp = stack.pop();
          ucskip = temp.ucskip;
          ignorable = temp.ignorable;
        }
      } else if (chr != null) { // \x (not a letter)
        curskip = 0;
        if (chr.equals("~")) {
          if (!ignorable)
            out.add("\u00A0"); // u'\xA0' non-breaking space
        } else if (chr.equals("{") || chr.equals("}") || chr.equals("\\")) { // *************
                                            // check
          if (!ignorable)
            out.add(chr);
        } else if (chr.equals("*"))
          ignorable = true;
      } else if (word != null) { // foo
        curskip = 0;
        if (destinations.contains(word))
          ignorable = true;
        else if (ignorable)
          continue;
        else if (specialChars.containsKey(word))
          out.add(specialChars.get(word));
        else if (word.equals("uc"))
          ucskip = Integer.parseInt(arg);
        else if (word.equals("u")) {
          int c = Integer.parseInt(arg);
          if (c < 0)
            c += 0x10000;
          if (c > 127)
            out.add(Character.toString((char) c));
          else
            out.add(Character.toString((char) c));
          curskip = ucskip;
        }
      } else if (hex != null) { // \'xx
        if (curskip > 0)
          curskip -= 1;
        else if (!ignorable) {
          int c = Integer.parseInt(hex, 16);
          if (c > 127)
            out.add(Character.toString((char) c));
          else
            out.add(Character.toString((char) c));
        }
      } else if (tchar != null) {
        if (curskip > 0)
          curskip -= 1;
        else if (!ignorable)
          out.add(tchar);
      }
    }

    StringBuilder sb = new StringBuilder();
    for (String str : out) {
      sb.append(str).append(""); // separating contents using semi colon
    }

    return sb.toString();

  }
}

Java Source Code List

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