能将markdown语法的文档内容，导出为word，pdf，HTML等的文件

package com.youbenzi.md2.markdown; import java.io.BufferedReader; import java.io.IOException; import java.io.StringReader; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Map.Entry; import java.util.regex.Pattern; import com.youbenzi.md2.markdown.builder.CodeBuilder; import com.youbenzi.md2.markdown.builder.CommonTextBuilder; import com.youbenzi.md2.markdown.builder.HeaderBuilder; import com.youbenzi.md2.markdown.builder.OrderedListBuilder; import com.youbenzi.md2.markdown.builder.QuoteBuilder; import com.youbenzi.md2.markdown.builder.UnorderedListBuilder; public class MDAnalyzer { private static List<String> mdTokenInLine = Arrays.asList(MDToken.BOLD_WORD, MDToken.ITALIC_WORD, MDToken.ITALIC_WORD_2, MDToken.STRIKE_WORD, MDToken.CODE_WORD, MDToken.IMG, MDToken.LINK); public static List<Block> analyze(BufferedReader reader){ List<TextOrTable> list = tableFilter(reader); List<Block> blocks = new ArrayList<Block>(); for (TextOrTable textAndTable : list) { if(textAndTable.isTable()){ Block block = new Block(); block.setType(BlockType.TABLE); block.setTableData(textAndTable.getTableData()); blocks.add(block); }else{ List<Block> tmps = analyzeTextNoTable(textAndTable.getReader()); for (Block block : tmps) { blocks.add(block); } } } return blocks; } /** * 不包含table格式的语法解析 * @param reader * @return */ private static List<Block> analyzeTextNoTable(BufferedReader reader){ List<Block> list = new ArrayList<Block>(); try { List<String> lines = new ArrayList<String>(); String tmp = reader.readLine(); while (tmp != null) { //将内容每一行都存入list中 lines.add(tmp); tmp = reader.readLine(); } boolean hasCode = true; //内容是否包含代码格式的标志 for (int idx = 0, si = lines.size(); idx < si; idx++) { Block block = null; String str = lines.get(idx); if(str.trim().equals("")){ //空行直接忽略 continue; } if(str.trim().startsWith(MDToken.CODE) && hasCode){ StringBuilder sb = new StringBuilder(); boolean isCodeEnd = false; for (int idx1 = (idx+1); idx1 < si; idx1++) { str = lines.get(idx1); if(str.trim().equals(MDToken.CODE)){ //检查是否有代码结束符 isCodeEnd = true; idx = idx1; break; }else{ sb.append(str+"\n"); } } if(isCodeEnd){ block = new CodeBuilder(sb.toString()).bulid(); }else{ //没代码结束符，则下次不会再进来检查代码格式，游标置回代码格式检查之前 idx = idx - 1; hasCode = false; continue; } }else if(str.startsWith(MDToken.CODE_BLANK)){ Object[] tmps = analyzerList(idx, lines, new ListBuilderCon() { @Override public Block newBuilder(String str) { return new CodeBuilder(str).bulid(); } @Override public boolean isRightType(String lineStr) { return lineStr.startsWith(MDToken.CODE_BLANK); } @Override public StringBuilder how2AppendIfBlank(StringBuilder sb) { return sb.append("\n"); } public StringBuilder how2AppendIfNotBlank(StringBuilder sb, String value) { return sb.append(value.substring(MDToken.CODE_BLANK.length())+"\n"); } }); idx = (Integer)tmps[0]; block = (Block)tmps[1]; }else if(str.trim().startsWith(MDToken.HEADLINE)){ block = new HeaderBuilder(str).bulid(); }else if(isQuote(str)){ Object[] tmps = analyzerList(idx, lines, new ListBuilderCon() { public Block newBuilder(String str) { return new QuoteBuilder(str).bulid(); } public boolean isRightType(String lineStr) { return isQuote(lineStr); } }); idx = (Integer)tmps[0]; block = (Block)tmps[1]; }else if(isUnOrderedList(str)){ Object[] tmps = analyzerList(idx, lines, new ListBuilderCon() { public Block newBuilder(String str) { return new UnorderedListBuilder(str).bulid(); } public boolean isRightType(String lineStr) { return isUnOrderedList(lineStr); } }); idx = (Integer)tmps[0]; block = (Block)tmps[1]; }else if(isOrderedList(str)){ Object[] tmps = analyzerList(idx, lines, new ListBuilderCon() { public Block newBuilder(String str) { return new OrderedListBuilder(str).bulid(); } public boolean isRightType(String lineStr) { return isOrderedList(lineStr); } }); idx = (Integer)tmps[0]; block = (Block)tmps[1]; }else{ if((idx+1) < si){ String nextStr = lines.get(idx+1); int lvl = HeaderBuilder.isRightType(nextStr); if(lvl>0){ block = new HeaderBuilder(str).bulid(lvl); idx++; } } if(block==null){ block = new CommonTextBuilder(str).bulid(); } } if(block!=null){ list.add(block); } } } catch (IOException e) { e.printStackTrace(); } finally{ if(reader!=null){ try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } return list; } /** * 筛选表格 * @param reader 缓存的数据 * @return 按文本顺序排列的文本或者表格的列表 */ public static List<TextOrTable> tableFilter(BufferedReader reader){ List<TextOrTable> list = new ArrayList<TextOrTable>(); List<String> lines = new ArrayList<String>(); try { String tmp = reader.readLine(); while (tmp != null) { //将内容每一行都存入list中 lines.add(tmp); tmp = reader.readLine(); } // boolean inCode = false; StringBuffer sb = new StringBuffer(); for (int i = 0, l = lines.size(); i < l; i++) { String str = lines.get(i); boolean hasTable = false; if(str.indexOf("|")>-1 ){ //检查是否有table的分隔符 hasTable = true; boolean isStart = false; boolean isEnd = false; if(str.startsWith("\\|")){ //去头 str = str.substring(1); isStart = true; } if(str.endsWith("\\|")){ //去尾 str = str.substring(0, str.length()-1); isEnd = true; } String[] parts = str.split("\\|"); if(parts.length<=1 && !(isStart&&isEnd)){ hasTable = false; } } if(hasTable){ if((i+1)<l){ //检查到符合规范的table头之后，检测下一行是否为 ---|---的类似字符串 String nextLine = lines.get(i+1); String[] nextParts = nextLine.split("\\|"); for (String part : nextParts) { part = part.trim().replaceAll("-", ""); if(part.length()>0){ hasTable = false; } if(!hasTable){ break; } } }else{ hasTable = false; } } if(hasTable){ //检查到真的有table存在 if(!sb.toString().equals("")){ //把已存入stringbuffer的内容先归档 TextOrTable text = new TextOrTable(false); text.setReader(new BufferedReader(new StringReader(sb.toString()))); list.add(text); sb = new StringBuffer(""); //将stringbuffer重新置为空 } List<List<String>> tableDataList = new ArrayList<List<String>>(); int tableLineNum = i+1; //---|---的行数，此行不能放入table的data for (int j = i; j < l; j++){ if(j==tableLineNum){ continue; } String tableLine = lines.get(j); String[] cellDatas = tableLine.split("\\|"); if(cellDatas.length>=2){ //此行是table的数据 tableDataList.add(Arrays.asList(cellDatas)); if(j==(l-1)){ //到内容底部，table数据结束，归档 tableDataList = trimTableData(tableDataList); TextOrTable table = new TextOrTable(true); table.setTableData(tableDataList); list.add(table); i = j; //设置游标，跳出循环 break; } }else{ //table数据结束，归档 tableDataL