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1 /*
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2 Copyright (c) 2008 Franklin Schmidt <fschmidt@gmail.com>
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3
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4 Permission is hereby granted, free of charge, to any person obtaining a copy
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5 of this software and associated documentation files (the "Software"), to deal
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6 in the Software without restriction, including without limitation the rights
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7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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8 copies of the Software, and to permit persons to whom the Software is
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9 furnished to do so, subject to the following conditions:
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10
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11 The above copyright notice and this permission notice shall be included in
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12 all copies or substantial portions of the Software.
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13
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14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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20 THE SOFTWARE.
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21 */
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22
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23 package fschmidt.tools;
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24
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25 import java.io.PrintWriter;
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26 import java.io.File;
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27 import java.io.FileWriter;
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28 import java.io.CharArrayWriter;
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29 import fschmidt.util.java.IoUtils;
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30
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31
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32 public final class Jtp {
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33 public static class JtpException extends Exception {
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34 JtpException(String msg) {
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35 super(msg);
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36 }
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37 }
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38
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39 public static void main(String args[]) throws Exception {
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40 try {
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41 for( int iFile=0; iFile<args.length; iFile++ ) {
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42 String inFile = args[iFile];
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43 if( !inFile.endsWith(".jtp") )
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44 throw new RuntimeException(inFile+" doesn't end with '.jtp'");
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45 String outFile = inFile.substring(0,inFile.length()-4) + ".java";
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46 String jtp = IoUtils.read( new File(inFile) );
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47 IoUtils.write( new File(outFile), toJava(jtp) );
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48 }
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49 } catch(JtpException e) {
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50 System.err.println(e.getMessage());
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51 System.exit(-1);
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52 }
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53 }
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54
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55 public static String toJava(String jtp)
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56 throws JtpException
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57 {
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58 if( jtp==null )
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59 throw new JtpException("null argument");
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60 CharArrayWriter out0 = new CharArrayWriter();
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61 PrintWriter out = new PrintWriter(out0);
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62 int tabs = 0;
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63 int i = 0;
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64 while(true) {
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65 int i1 = jtp.indexOf("<%",i);
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66 boolean done = i1 == -1;
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67 if( i1 > i || done && jtp.substring(i).trim().length() > 0 ) {
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68 if( done )
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69 i1 = jtp.length();
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70 out.print("\t\tout.print( \"");
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71 for( ; i<i1; i++ ) {
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72 char c = jtp.charAt(i);
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73 switch(c) {
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74 case '\r':
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75 out.print("\\r");
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76 break;
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77 case '\n':
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78 out.print("\\n");
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79 int j;
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80 for( j=0; j<tabs && i+j+1<i1 && jtp.charAt(i+j+1)=='\t'; j++ );
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81 i += j;
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82 break;
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83 case '\\':
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84 case '"':
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85 out.print('\\');
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86 default:
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87 out.print(c);
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88 }
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89 }
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90 out.println("\" );");
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91 }
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92 if( done ) {
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93 out.flush();
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94 return out0.toString();
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95 }
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96 int i2 = jtp.indexOf("%>",i1);
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97 if( i2 == -1 ) {
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98 throw new JtpException("'<%' not matched with '%>'");
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99 }
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100 i += 2;
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101 char c = jtp.charAt(i);
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102 if( c == '=' ) {
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103 out.print("\t\tout.print( (");
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104 out.print( jtp.substring(i+1,i2) );
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105 out.println(") );");
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106 } else if( c == '+' ) {
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107 out.print("\t\tout.print( (lang.");
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108 String methodToCall = jtp.substring(i+1,i2);
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109 out.print(methodToCall);
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110 if (!methodToCall.endsWith(")"))
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111 out.print("()");
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112 out.println(") );");
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113 } else {
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114 out.println( jtp.substring(i,i2) );
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115 int tabs2 = 0;
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116 loop:
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117 for( int j = i2 - 1; true; j-- ) {
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118 switch( jtp.charAt(j) ) {
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119 case '\t':
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120 tabs2++;
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121 break;
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122 case '\n':
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123 tabs = tabs2;
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124 break loop;
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125 default:
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126 break loop;
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127 }
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128 }
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129 }
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130 i = i2 + 2;
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131 }
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132 }
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133
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134 }
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