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| 1 /* | |
| 2 Copyright 2011 Google Inc | |
| 3 | |
| 4 Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 you may not use this file except in compliance with the License. | |
| 6 You may obtain a copy of the License at | |
| 7 | |
| 8 http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | |
| 10 Unless required by applicable law or agreed to in writing, software | |
| 11 distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 See the License for the specific language governing permissions and | |
| 14 limitations under the License. | |
| 15 */ | |
| 16 | |
| 17 using System; | |
| 18 using System.IO; | |
| 19 | |
| 20 namespace Google.Build.Utils.Text | |
| 21 { | |
| 22 /// <summary> | |
| 23 /// Text helper utility. | |
| 24 /// </summary> | |
| 25 public static class TextUtils | |
| 26 { | |
| 27 /// <summary> | |
| 28 /// Inserts the specified content in the place between the start and end
tag, which can be found in the | |
| 29 /// specified source text. | |
| 30 /// </summary> | |
| 31 /// <param name="sourceText">Text which contains the tags.</param> | |
| 32 /// <param name="startTag">The tag marking the start of the replacement
area.</param> | |
| 33 /// <param name="endTag">The tag marking the end of the replacement area
.</param> | |
| 34 /// <param name="content">The content to insert into the replacement are
a.</param> | |
| 35 /// <returns>[..] {startTag} content {endTag} [..]</returns> | |
| 36 public static string InsertIntoText(string sourceText, string startTag,
string endTag, string content) | |
| 37 { | |
| 38 return ReplaceInText(sourceText, startTag, endTag, old => content); | |
| 39 } | |
| 40 | |
| 41 /// <summary> | |
| 42 /// Replaces the text within the given tags using the specified replace
function. | |
| 43 /// </summary> | |
| 44 /// <param name="sourceText">The text containing the tags.</param> | |
| 45 /// <param name="startTag">The tag marking the start of the replacement
area.</param> | |
| 46 /// <param name="endTag">The tag marking the end of the replacement area
.</param> | |
| 47 /// <param name="replace">The function used to replace the tag content.<
/param> | |
| 48 /// <returns>The resulting text.</returns> | |
| 49 public static string ReplaceInText(string sourceText, | |
| 50 string startTag, | |
| 51 string endTag, | |
| 52 Func<string, string> replace) | |
| 53 { | |
| 54 // Find the start tag. | |
| 55 int startIndex = sourceText.IndexOf(startTag); | |
| 56 if (startIndex < 0) | |
| 57 { | |
| 58 throw new ArgumentException("Start Tag not found: " startTag); | |
| 59 } | |
| 60 startIndex = startTag.Length; | |
| 61 | |
| 62 // Find the end tag. | |
| 63 int endIndex = sourceText.IndexOf(endTag, startIndex); | |
| 64 if (endIndex < 0) | |
| 65 { | |
| 66 throw new ArgumentException("End Tag not found: " endTag); | |
| 67 } | |
| 68 | |
| 69 // Replace the text | |
| 70 string oldText = sourceText.Substring(startIndex, endIndex - startIn
dex).Trim('\r', '\n'); | |
| 71 string newText = replace(oldText); | |
| 72 return sourceText.Substring(0, startIndex) Environment.NewLine | |
| 73 newText Environment.NewLine | |
| 74 sourceText.Substring(endIndex); | |
| 75 } | |
| 76 | |
| 77 /// <summary> | |
| 78 /// Replaces the text within the given tags using the specified replace
function. | |
| 79 /// </summary> | |
| 80 /// <param name="file">The file to replace the text in.</param> | |
| 81 /// <param name="startTag">The tag marking the start of the replacement
area.</param> | |
| 82 /// <param name="endTag">The tag marking the end of the replacement area
.</param> | |
| 83 /// <param name="replace">The function used to replace the tag content.<
/param> | |
| 84 public static void ReplaceInFile(string file, string startTag, string en
dTag, Func<string, string> replace) | |
| 85 { | |
| 86 File.WriteAllText(file, ReplaceInText(File.ReadAllText(file), startT
ag, endTag, replace)); | |
| 87 } | |
| 88 | |
| 89 /// <summary> | |
| 90 /// Inserts the specified content in the place between the start and end
tag, which can be found in the | |
| 91 /// specified source text. | |
| 92 /// </summary> | |
| 93 /// <param name="file">The file containing the tags.</param> | |
| 94 /// <param name="startTag">The tag marking the start of the replacement
area.</param> | |
| 95 /// <param name="endTag">The tag marking the end of the replacement area
.</param> | |
| 96 /// <param name="content">The content to insert into the replacement are
a.</param> | |
| 97 /// <returns>[..] {startTag} content {endTag} [..]</returns> | |
| 98 public static void InsertIntoFile(string file, string startTag, string e
ndTag, string content) | |
| 99 { | |
| 100 File.WriteAllText(file, InsertIntoText(File.ReadAllText(file), start
Tag, endTag, content)); | |
| 101 } | |
| 102 | |
| 103 /// <summary> | |
| 104 /// Transforms the first letter of the string into uppercase. | |
| 105 /// </summary> | |
| 106 public static string ToUpperFirstChar(this string str) | |
| 107 { | |
| 108 if (string.IsNullOrEmpty(str)) | |
| 109 { | |
| 110 return str; | |
| 111 } | |
| 112 return Char.ToUpper(str[0]) str.Substring(1); | |
| 113 } | |
| 114 | |
| 115 /// <summary> | |
| 116 /// Finishes the specified string with the specified character. | |
| 117 /// </summary> | |
| 118 /// <param name="str">The sentence to end.</param> | |
| 119 /// <param name="endChar">The character with which this sentence should
end.</param> | |
| 120 public static string MakeSentence(this string str, char endChar) | |
| 121 { | |
| 122 string trimmed = str.TrimEnd(' ', '\r', '\n'); | |
| 123 | |
| 124 if (trimmed.EndsWith(endChar.ToString())) | |
| 125 { | |
| 126 return str; | |
| 127 } | |
| 128 return trimmed endChar str.Substring(trimmed.Length); | |
| 129 } | |
| 130 | |
| 131 /// <summary> | |
| 132 /// Joins the two specified lines into a common string. | |
| 133 /// </summary> | |
| 134 public static string JoinLines(string a, string b) | |
| 135 { | |
| 136 return a Environment.NewLine b; | |
| 137 } | |
| 138 } | |
| 139 } | |
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