getfile and convo gen
[scannr.git] / js / flotr2 / examples / lib / codemirror / lib / util / formatting.js
Alex Sadleir
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
// ============== Formatting extensions ============================
// A common storage for all mode-specific formatting features
if (!CodeMirror.modeExtensions) CodeMirror.modeExtensions = {};
 
// Returns the extension of the editor's current mode
CodeMirror.defineExtension("getModeExt", function () {
  return CodeMirror.modeExtensions[this.getOption("mode")];
});
 
// If the current mode is 'htmlmixed', returns the extension of a mode located at
// the specified position (can be htmlmixed, css or javascript). Otherwise, simply
// returns the extension of the editor's current mode.
CodeMirror.defineExtension("getModeExtAtPos", function (pos) {
  var token = this.getTokenAt(pos);
  if (token && token.state && token.state.mode)
    return CodeMirror.modeExtensions[token.state.mode == "html" ? "htmlmixed" : token.state.mode];
  else
    return this.getModeExt();
});
 
// Comment/uncomment the specified range
CodeMirror.defineExtension("commentRange", function (isComment, from, to) {
  var curMode = this.getModeExtAtPos(this.getCursor());
  if (isComment) { // Comment range
    var commentedText = this.getRange(from, to);
    this.replaceRange(curMode.commentStart + this.getRange(from, to) + curMode.commentEnd
      , from, to);
    if (from.line == to.line && from.ch == to.ch) { // An empty comment inserted - put cursor inside
      this.setCursor(from.line, from.ch + curMode.commentStart.length);
    }
  }
  else { // Uncomment range
    var selText = this.getRange(from, to);
    var startIndex = selText.indexOf(curMode.commentStart);
    var endIndex = selText.lastIndexOf(curMode.commentEnd);
    if (startIndex > -1 && endIndex > -1 && endIndex > startIndex) {
      // Take string till comment start
      selText = selText.substr(0, startIndex)
      // From comment start till comment end
        + selText.substring(startIndex + curMode.commentStart.length, endIndex)
      // From comment end till string end
        + selText.substr(endIndex + curMode.commentEnd.length);
    }
    this.replaceRange(selText, from, to);
  }
});
 
// Applies automatic mode-aware indentation to the specified range
CodeMirror.defineExtension("autoIndentRange", function (from, to) {
  var cmInstance = this;
  this.operation(function () {
    for (var i = from.line; i <= to.line; i++) {
      cmInstance.indentLine(i);
    }
  });
});
 
// Applies automatic formatting to the specified range
CodeMirror.defineExtension("autoFormatRange", function (from, to) {
  var absStart = this.indexFromPos(from);
  var absEnd = this.indexFromPos(to);
  // Insert additional line breaks where necessary according to the
  // mode's syntax
  var res = this.getModeExt().autoFormatLineBreaks(this.getValue(), absStart, absEnd);
  var cmInstance = this;
 
  // Replace and auto-indent the range
  this.operation(function () {
    cmInstance.replaceRange(res, from, to);
    var startLine = cmInstance.posFromIndex(absStart).line;
    var endLine = cmInstance.posFromIndex(absStart + res.length).line;
    for (var i = startLine; i <= endLine; i++) {
      cmInstance.indentLine(i);
    }
  });
});
 
// Define extensions for a few modes
 
CodeMirror.modeExtensions["css"] = {
  commentStart: "/*",
  commentEnd: "*/",
  wordWrapChars: [";", "\\{", "\\}"],
  autoFormatLineBreaks: function (text) {
    return text.replace(new RegExp("(;|\\{|\\})([^\r\n])", "g"), "$1\n$2");
  }
};
 
CodeMirror.modeExtensions["javascript"] = {
  commentStart: "/*",
  commentEnd: "*/",
  wordWrapChars: [";", "\\{", "\\}"],
 
  getNonBreakableBlocks: function (text) {
    var nonBreakableRegexes = [
        new RegExp("for\\s*?\\(([\\s\\S]*?)\\)"),
        new RegExp("'([\\s\\S]*?)('|$)"),
        new RegExp("\"([\\s\\S]*?)(\"|$)"),
        new RegExp("//.*([\r\n]|$)")
      ];
    var nonBreakableBlocks = new Array();
    for (var i = 0; i < nonBreakableRegexes.length; i++) {
      var curPos = 0;
      while (curPos < text.length) {
        var m = text.substr(curPos).match(nonBreakableRegexes[i]);
        if (m != null) {
          nonBreakableBlocks.push({
            start: curPos + m.index,
            end: curPos + m.index + m[0].length
          });
          curPos += m.index + Math.max(1, m[0].length);
        }
        else { // No more matches
          break;
        }
      }
    }
    nonBreakableBlocks.sort(function (a, b) {
      return a.start - b.start;
    });
 
    return nonBreakableBlocks;
  },
 
  autoFormatLineBreaks: function (text) {
    var curPos = 0;
    var reLinesSplitter = new RegExp("(;|\\{|\\})([^\r\n])", "g");
    var nonBreakableBlocks = this.getNonBreakableBlocks(text);
    if (nonBreakableBlocks != null) {
      var res = "";
      for (var i = 0; i < nonBreakableBlocks.length; i++) {
        if (nonBreakableBlocks[i].start > curPos) { // Break lines till the block
          res += text.substring(curPos, nonBreakableBlocks[i].start).replace(reLinesSplitter, "$1\n$2");
          curPos = nonBreakableBlocks[i].start;
        }
        if (nonBreakableBlocks[i].start <= curPos
          && nonBreakableBlocks[i].end >= curPos) { // Skip non-breakable block
          res += text.substring(curPos, nonBreakableBlocks[i].end);
          curPos = nonBreakableBlocks[i].end;
        }
      }
      if (curPos < text.length - 1) {
        res += text.substr(curPos).replace(reLinesSplitter, "$1\n$2");
      }
      return res;
    }
    else {
      return text.replace(reLinesSplitter, "$1\n$2");
    }
  }
};
 
CodeMirror.modeExtensions["xml"] = {
  commentStart: "<!--",
  commentEnd: "-->",
  wordWrapChars: [">"],
 
  autoFormatLineBreaks: function (text) {
    var lines = text.split("\n");
    var reProcessedPortion = new RegExp("(^\\s*?<|^[^<]*?)(.+)(>\\s*?$|[^>]*?$)");
    var reOpenBrackets = new RegExp("<", "g");
    var reCloseBrackets = new RegExp("(>)([^\r\n])", "g");
    for (var i = 0; i < lines.length; i++) {
      var mToProcess = lines[i].match(reProcessedPortion);
      if (mToProcess != null && mToProcess.length > 3) { // The line starts with whitespaces and ends with whitespaces
        lines[i] = mToProcess[1]
            + mToProcess[2].replace(reOpenBrackets, "\n$&").replace(reCloseBrackets, "$1\n$2")
            + mToProcess[3];
        continue;
      }
    }
 
    return lines.join("\n");
  }
};
 
CodeMirror.modeExtensions["htmlmixed"] = {
  commentStart: "<!--",
  commentEnd: "-->",
  wordWrapChars: [">", ";", "\\{", "\\}"],
 
  getModeInfos: function (text, absPos) {
    var modeInfos = new Array();
    modeInfos[0] =
      {
        pos: 0,
        modeExt: CodeMirror.modeExtensions["xml"],
        modeName: "xml"
      };
 
    var modeMatchers = new Array();
    modeMatchers[0] =
      {
        regex: new RegExp("<style[^>]*>([\\s\\S]*?)(</style[^>]*>|$)", "i"),
        modeExt: CodeMirror.modeExtensions["css"],
        modeName: "css"
      };
    modeMatchers[1] =
      {
        regex: new RegExp("<script[^>]*>([\\s\\S]*?)(</script[^>]*>|$)", "i"),
        modeExt: CodeMirror.modeExtensions["javascript"],
        modeName: "javascript"
      };
 
    var lastCharPos = (typeof (absPos) !== "undefined" ? absPos : text.length - 1);
    // Detect modes for the entire text
    for (var i = 0; i < modeMatchers.length; i++) {
      var curPos = 0;
      while (curPos <= lastCharPos) {
        var m = text.substr(curPos).match(modeMatchers[i].regex);
        if (m != null) {
          if (m.length > 1 && m[1].length > 0) {
            // Push block begin pos
            var blockBegin = curPos + m.index + m[0].indexOf(m[1]);
            modeInfos.push(
              {
                pos: blockBegin,
                modeExt: modeMatchers[i].modeExt,
                modeName: modeMatchers[i].modeName
              });
            // Push block end pos
            modeInfos.push(
              {
                pos: blockBegin + m[1].length,
                modeExt: modeInfos[0].modeExt,
                modeName: modeInfos[0].modeName
              });
            curPos += m.index + m[0].length;
            continue;
          }
          else {
            curPos += m.index + Math.max(m[0].length, 1);
          }
        }
        else { // No more matches
          break;
        }
      }
    }
    // Sort mode infos
    modeInfos.sort(function sortModeInfo(a, b) {
      return a.pos - b.pos;
    });
 
    return modeInfos;
  },
 
  autoFormatLineBreaks: function (text, startPos, endPos) {
    var modeInfos = this.getModeInfos(text);
    var reBlockStartsWithNewline = new RegExp("^\\s*?\n");
    var reBlockEndsWithNewline = new RegExp("\n\\s*?$");
    var res = "";
    // Use modes info to break lines correspondingly
    if (modeInfos.length > 1) { // Deal with multi-mode text
      for (var i = 1; i <= modeInfos.length; i++) {
        var selStart = modeInfos[i - 1].pos;
        var selEnd = (i < modeInfos.length ? modeInfos[i].pos : endPos);
 
        if (selStart >= endPos) { // The block starts later than the needed fragment
          break;
        }
        if (selStart < startPos) {
          if (selEnd <= startPos) { // The block starts earlier than the needed fragment
            continue;
          }
          selStart = startPos;
        }
        if (selEnd > endPos) {
          selEnd = endPos;
        }
        var textPortion = text.substring(selStart, selEnd);
        if (modeInfos[i - 1].modeName != "xml") { // Starting a CSS or JavaScript block
          if (!reBlockStartsWithNewline.test(textPortion)
              && selStart > 0) { // The block does not start with a line break
            textPortion = "\n" + textPortion;
          }
          if (!reBlockEndsWithNewline.test(textPortion)
              && selEnd < text.length - 1) { // The block does not end with a line break
            textPortion += "\n";
          }
        }
        res += modeInfos[i - 1].modeExt.autoFormatLineBreaks(textPortion);
      }
    }
    else { // Single-mode text
      res = modeInfos[0].modeExt.autoFormatLineBreaks(text.substring(startPos, endPos));
    }
 
    return res;
  }
};