| 1 | package PIANOS.io; |
| 2 | |
| 3 | import java.io.*; |
| 4 | |
| 5 | import java.util.ArrayList; |
| 6 | import java.util.regex.*; |
| 7 | |
| 8 | /** |
| 9 | * FortranWriter, a class that receives lines of Fortran code, multilines and indents them correctly and writes them to a file. |
| 10 | */ |
| 11 | public class FortranWriter { |
| 12 | |
| 13 | private static final String[] BEGIN_INDENT = {"BLOCK\\p{Space}*DATA", "DO", "FORALL", |
| 14 | "FUNCTION", "IF", "INTERFACE", "MODULE", "TYPE\\p{Space}*[.[^\\(]]+", "PROGRAM", |
| 15 | "SELECT", "SUBROUTINE", "CASE\\p{Space}*\\(", "WHERE", "CONTAINS", "ELSE", "ELSEWHERE"}; |
| 16 | |
| 17 | private static final String[] END_INDENT = {"END", "CASE\\p{Space}*\\(", "CONTAINS", "ELSE", "ELSEWHERE"}; |
| 18 | |
| 19 | private static final int INDENT_CHARS = 4; |
| 20 | private static final int MAX_LINE_LENGTH = 79; |
| 21 | |
| 22 | private File file; |
| 23 | private int indent; |
| 24 | private boolean first_write = true; |
| 25 | |
| 26 | /** |
| 27 | * Creates a new <code>FortranWriter</code>. |
| 28 | * |
| 29 | * @param fileName name of the file the Fortran source code will be |
| 30 | * written to |
| 31 | */ |
| 32 | public FortranWriter(String fileName) { |
| 33 | file = new File(fileName); |
| 34 | indent = 0; |
| 35 | } |
| 36 | |
| 37 | /* |
| 38 | //Considered obsolete and slow |
| 39 | //Call write(ArrayList<String>) or write(String[]) |
| 40 | //so that the file is not closed and opened every time |
| 41 | |
| 42 | public void write(String line) throws IOException { |
| 43 | String[] array = new String[1]; |
| 44 | array[1] = line; |
| 45 | this.write(array); |
| 46 | } |
| 47 | */ |
| 48 | /** |
| 49 | * Writes lines of Fortran source code into the file. |
| 50 | * |
| 51 | * @param lines an ArrayList containing the lines to be written to the |
| 52 | * file |
| 53 | * |
| 54 | * @throws IOException If the file couldn't be written to |
| 55 | */ |
| 56 | |
| 57 | public void write(ArrayList<String> lines) throws IOException{ |
| 58 | write(lines.toArray(new String[lines.size()])); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Writes lines of Fortran source code into the file. |
| 63 | * |
| 64 | * @param lines an array containing the lines to be written to the |
| 65 | * file |
| 66 | * |
| 67 | * @throws IOException If the file couldn't be written to |
| 68 | */ |
| 69 | public void write(String[] lines) throws IOException { |
| 70 | FileWriter out; |
| 71 | if (first_write) { |
| 72 | out = new FileWriter(file, false); |
| 73 | first_write = false; |
| 74 | } else out = new FileWriter(file, true); |
| 75 | |
| 76 | for (int j = 0; j < lines.length; j++){ |
| 77 | String line = lines[j].trim(); |
| 78 | |
| 79 | if (line.length() <= 0){ |
| 80 | out.write(getIndent() + line + "\n"); |
| 81 | continue; |
| 82 | } |
| 83 | if (line.charAt(0) == '!'){ |
| 84 | out.write(getIndent() + line + "\n"); |
| 85 | continue; |
| 86 | } |
| 87 | |
| 88 | for (int i = 0; i < END_INDENT.length; i++) |
| 89 | if (line.matches("^\\p{Space}*" + END_INDENT[i] + ".*$")) |
| 90 | indent = indent - INDENT_CHARS; |
| 91 | |
| 92 | String loopline = line; // we must save the original line. |
| 93 | |
| 94 | if (indent + loopline.length() > MAX_LINE_LENGTH) { |
| 95 | boolean firstLine = true; |
| 96 | boolean characterContinue = false; |
| 97 | String temp = loopline; |
| 98 | while (temp != null){ |
| 99 | if (indent + temp.length() > MAX_LINE_LENGTH) { |
| 100 | if (!firstLine) |
| 101 | indent = indent + INDENT_CHARS; |
| 102 | |
| 103 | int indentedMax = MAX_LINE_LENGTH -indent; |
| 104 | |
| 105 | //int last_space = temp.lastIndexOf(" ", MAX_LINE_LENGTH - 2); |
| 106 | int last_space = temp.lastIndexOf(" ", indentedMax - 2); |
| 107 | if (last_space == -1){ |
| 108 | last_space = temp.lastIndexOf(" "); |
| 109 | if (last_space == -1){ |
| 110 | System.out.println("In "+ file + ": Please cut the line \"" +line + "\" manually " + |
| 111 | "if You have problems compiling the program. " + |
| 112 | "I can't see how to cut it properly"); |
| 113 | break; // if we can't cut it let's leave it and hope |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | out.write(getIndent() + temp.substring(0, last_space) + " &\n"); |
| 118 | // PROBLEM. MESSES UP CHARACTER STRINGS. |
| 119 | // FIX. regex for character strings in Fortran: |
| 120 | // '[.[^']]*' |
| 121 | // This is assuming that '' is not used, and " are not used. |
| 122 | // check if last_space is inside a matching section. |
| 123 | Pattern p = Pattern.compile("'[.[^']]*'"); |
| 124 | Pattern cl = Pattern.compile("^\\&[.[^']]*'"); |
| 125 | Matcher ch = cl.matcher(temp); |
| 126 | Matcher m = p.matcher(temp); |
| 127 | boolean matched = false; |
| 128 | while (m.find()){ |
| 129 | String characters = m.group(); |
| 130 | if (m.start() <= last_space && last_space < m.end()){ |
| 131 | // it's inside. We need a & after last_space. |
| 132 | temp = temp.substring(0, last_space + 1) + "&" + temp.substring(last_space +1); |
| 133 | matched = true; |
| 134 | } |
| 135 | } |
| 136 | if (!matched){ |
| 137 | while (ch.find()){ |
| 138 | String characters = ch.group(); |
| 139 | if (ch.start() <= last_space && last_space < ch.end()){ |
| 140 | // it's inside. We need a & after last_space. |
| 141 | temp = temp.substring(0, last_space + 1) + "&" + temp.substring(last_space +1); |
| 142 | } |
| 143 | |
| 144 | } |
| 145 | } |
| 146 | // we did not skew index numbering, hopefully. |
| 147 | loopline = temp.substring(last_space + 1); |
| 148 | temp = loopline; |
| 149 | |
| 150 | if (!firstLine) |
| 151 | indent = indent - INDENT_CHARS; |
| 152 | else firstLine = false; |
| 153 | } else { |
| 154 | indent = indent + INDENT_CHARS; |
| 155 | out.write(getIndent() + temp + "\n"); |
| 156 | indent = indent - INDENT_CHARS; |
| 157 | // also indent the last continual line |
| 158 | temp = null; |
| 159 | // only after THAT terminate the loop. |
| 160 | /* in Anni's version the last continual line was |
| 161 | * mistakenly lost. |
| 162 | */ |
| 163 | } |
| 164 | |
| 165 | } |
| 166 | } else out.write(getIndent() + line + "\n"); |
| 167 | |
| 168 | |
| 169 | for (int i = 0; i < BEGIN_INDENT.length; i++){ |
| 170 | if (line.matches("^\\p{Space}*" + BEGIN_INDENT[i] + ".*$")){ |
| 171 | if (!line.matches("^\\p{Space}*END.*$") && |
| 172 | !line.matches("^\\p{Space}*MODULE\\p{Space}+PROCEDURE\\p{Space}+.*$") && |
| 173 | !line.matches("^\\p{Space}*MODULE\\p{Space}+procedure\\p{Space}+.*$")) { |
| 174 | indent = indent + INDENT_CHARS; |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | out.close(); |
| 180 | } |
| 181 | |
| 182 | private String getIndent() { |
| 183 | String spaces = ""; |
| 184 | for (int i = 0; i < indent; i++) { |
| 185 | spaces = spaces + " "; |
| 186 | } |
| 187 | return spaces; |
| 188 | } |
| 189 | |
| 190 | } |