py -> python

rb -> ruby
objc -> objective-c
cs -> csharp

1 files changed, 515 insertions, 0 deletions

diff --git a/csharp/src/Ice/StringUtil.cs b/csharp/src/Ice/StringUtil.cs
new file mode 100644
index 00000000000..32ce2d4b55e
--- /dev/null
+++ b/csharp/src/Ice/StringUtil.cs
@@ -0,0 +1,515 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2015 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+using System.Text;
+using System.Diagnostics;
+using System.Collections.Generic;
+
+namespace IceUtilInternal
+{
+
+    public sealed class StringUtil
+    {
+        //
+        // Return the index of the first character in str to
+        // appear in match, starting from 0. Returns -1 if none is
+        // found.
+        //
+        public static int findFirstOf(string str, string match)
+        {
+            return findFirstOf(str, match, 0);
+        }
+        
+        //
+        // Return the index of the first character in str to
+        // appear in match, starting from start. Returns -1 if none is
+        // found.
+        //
+        public static int findFirstOf(string str, string match, int start)
+        {
+            int len = str.Length;
+            for(int i = start; i < len; i++)
+            {
+                char ch = str[i];
+                if(match.IndexOf((char) ch) != -1)
+                {
+                    return i;
+                }
+            }
+            
+            return -1;
+        }
+        
+        //
+        // Return the index of the first character in str which does
+        // not appear in match, starting from 0. Returns -1 if none is
+        // found.
+        //
+        public static int findFirstNotOf(string str, string match)
+        {
+            return findFirstNotOf(str, match, 0);
+        }
+        
+        //
+        // Return the index of the first character in str which does
+        // not appear in match, starting from start. Returns -1 if none is
+        // found.
+        //
+        public static int findFirstNotOf(string str, string match, int start)
+        {
+            int len = str.Length;
+            for(int i = start; i < len; i++)
+            {
+                char ch = str[i];
+                if(match.IndexOf((char) ch) == -1)
+                {
+                    return i;
+                }
+            }
+            
+            return -1;
+        }
+        
+        //
+        // Write the byte b as an escape sequence if it isn't a printable ASCII
+        // character and append the escape sequence to sb. Additional characters
+        // that should be escaped can be passed in special. If b is any of these
+        // characters, b is preceded by a backslash in sb.
+        //
+        private static void encodeChar(byte b, StringBuilder sb, string special)
+        {
+            switch((char)b)
+            {
+                case '\\': 
+                {
+                    sb.Append("\\\\");
+                    break;
+                }
+                
+                case '\'': 
+                {
+                    sb.Append("\\'");
+                    break;
+                }
+                
+                case '"': 
+                {
+                    sb.Append("\\\"");
+                    break;
+                }
+                
+                case '\b': 
+                {
+                    sb.Append("\\b");
+                    break;
+                }
+                
+                case '\f': 
+                {
+                    sb.Append("\\f");
+                    break;
+                }
+                
+                case '\n': 
+                {
+                    sb.Append("\\n");
+                    break;
+                }
+                
+                case '\r': 
+                {
+                    sb.Append("\\r");
+                    break;
+                }
+                
+                case '\t': 
+                {
+                    sb.Append("\\t");
+                    break;
+                }
+                
+                default: 
+                {
+                    if(!(b >= 32 && b <= 126))
+                    {
+                        sb.Append('\\');
+                        string octal = System.Convert.ToString(b, 8);
+                        //
+                        // Add leading zeroes so that we avoid problems during
+                        // decoding. For example, consider the encoded string
+                        // \0013 (i.e., a character with value 1 followed by
+                        // the character '3'). If the leading zeroes were omitted,
+                        // the result would be incorrectly interpreted by the
+                        // decoder as a single character with value 11.
+                        //
+                        for(int j = octal.Length; j < 3; j++)
+                        {
+                            sb.Append('0');
+                        }
+                        sb.Append(octal);
+                    }
+                    else if(special != null && special.IndexOf((char)b) != -1)
+                    {
+                        sb.Append('\\');
+                        sb.Append((char)b);
+                    }
+                    else
+                    {
+                        sb.Append((char)b);
+                    }
+                }
+                break;
+            }
+        }
+        
+        //
+        // Add escape sequences (such as "\n", or "\007") to make a string
+        // readable in ASCII. Any characters that appear in special are
+        // prefixed with a backslash in the returned string.
+        //
+        public static string escapeString(string s, string special)
+        {
+            if(special != null)
+            {
+                for(int i = 0; i < special.Length; ++i)
+                {
+                    if((int)special[i] < 32 || (int)special[i] > 126)
+                    {
+                        throw new System.ArgumentException("special characters must be in ASCII range 32-126",
+                                                           "special");
+                    }
+                }
+            }
+
+            UTF8Encoding utf8 = new UTF8Encoding();
+            byte[] bytes = utf8.GetBytes(s);
+
+            StringBuilder result = new StringBuilder(bytes.Length);
+            for(int i = 0; i < bytes.Length; i++)
+            {
+                encodeChar(bytes[i], result, special);
+            }
+            
+            return result.ToString();
+        }
+        
+        private static char checkChar(string s, int pos)
+        {
+            char c = s[pos];
+            if(!(c >= 32 && c <= 126))
+            {
+                string msg;
+                if(pos > 0)
+                {
+                    msg = "character after `" + s.Substring(0, pos) + "'";
+                }
+                else
+                {
+                    msg = "first character";
+                }
+                msg += " is not a printable ASCII character (ordinal " + (int)c + ")";
+                throw new System.ArgumentException(msg);
+            }
+            return c;
+        }
+
+        //
+        // Decode the character or escape sequence starting at start and return it.
+        // end marks the one-past-the-end position of the substring to be scanned.
+        // nextStart is set to the index of the first character following the decoded
+        // character or escape sequence.
+        //
+        private static char decodeChar(string s, int start, int end, out int nextStart)
+        {
+            Debug.Assert(start >= 0);
+            Debug.Assert(start < end);
+            Debug.Assert(end <= s.Length);
+
+            char c;
+
+            if(s[start] != '\\')
+            {
+                c = checkChar(s, start++);
+            }
+            else
+            {
+                if(start + 1 == end)
+                {
+                    throw new System.ArgumentException("trailing backslash");
+                }
+                switch(s[++start])
+                {
+                    case '\\': 
+                    case '\'': 
+                    case '"': 
+                    {
+                        c = s[start++];
+                        break;
+                    }
+                    case 'b': 
+                    {
+                        ++start;
+                        c = '\b';
+                        break;
+                    }
+                    case 'f': 
+                    {
+                        ++start;
+                        c = '\f';
+                        break;
+                    }
+                    case 'n': 
+                    {
+                        ++start;
+                        c = '\n';
+                        break;
+                    }
+                    case 'r': 
+                    {
+                        ++start;
+                        c = '\r';
+                        break;
+                    }
+                    case 't': 
+                    {
+                        ++start;
+                        c = '\t';
+                        break;
+                    }
+                    case '0':
+                    case '1':
+                    case '2':
+                    case '3':
+                    case '4':
+                    case '5':
+                    case '6':
+                    case '7':
+                    {
+                        int val = 0;
+                        for(int j = 0; j < 3 && start < end; ++j)
+                        {
+                            int charVal = s[start++] - '0';
+                            if(charVal < 0 || charVal > 7)
+                            {
+                                --start;
+                                break;
+                            }
+                            val = val * 8 + charVal;
+                        }
+                        if(val > 255)
+                        {
+                            string msg = "octal value \\" + System.Convert.ToString(val, 8) + " (" + val +
+                                ") is out of range";
+                            throw new System.ArgumentException(msg, "s");
+                        }
+                        c = System.Convert.ToChar(val);
+                        break;
+                    }
+                    default:
+                    {
+                        c = checkChar(s, start++);
+                        break;
+                    }
+                }
+            }
+            nextStart = start;
+            return c;
+        }
+
+        //
+        // Remove escape sequences from s and append the result to sb.
+        // Return true if successful, false otherwise.
+        //
+        private static void decodeString(string s, int start, int end, StringBuilder sb)
+        {
+            while(start < end)
+            {
+                sb.Append(decodeChar(s, start, end, out start));
+            }
+        }
+
+        //
+        // Remove escape sequences added by escapeString. Throws System.ArgumentException
+        // for an invalid input string.
+        //
+        public static string unescapeString(string s, int start, int end)
+        {
+            Debug.Assert(start >= 0 && start <= end && end <= s.Length);
+
+            StringBuilder sb = new StringBuilder();
+            decodeString(s, start, end, sb);
+            string decodedString = sb.ToString();
+
+            byte[] arr = new byte[decodedString.Length];
+            for(int i = 0; i < arr.Length; ++i)
+            {
+                arr[i] = (byte)decodedString[i];
+            }
+
+            UTF8Encoding utf8 = new UTF8Encoding(false, true);
+            return utf8.GetString(arr, 0, arr.Length); // May raise ArgumentException.
+        }
+
+        //
+        // Split string helper; returns null for unmatched quotes
+        //
+        static public string[] splitString(string str, string delim)
+        {
+            List<string> l = new List<string>();
+            char[] arr = new char[str.Length];
+            int pos = 0;
+
+            int n = 0;
+            char quoteChar = '\0';
+            while(pos < str.Length)
+            {
+                if(quoteChar == '\0' && (str[pos] == '"' || str[pos] == '\''))
+                {
+                    quoteChar = str[pos++];
+                    continue; // Skip the quote.
+                }
+                else if(quoteChar == '\0' && str[pos] == '\\' && pos + 1 < str.Length &&
+                        (str[pos + 1] == '\'' || str[pos + 1] == '"'))
+                {
+                    ++pos; // Skip the backslash
+                }
+                else if(quoteChar != '\0' && str[pos] == '\\' && pos + 1 < str.Length && str[pos + 1] == quoteChar)
+                {
+                    ++pos; // Skip the backslash
+                }
+                else if(quoteChar != '\0' && str[pos] == quoteChar)
+                {
+                    ++pos;
+                    quoteChar = '\0';
+                    continue; // Skip the quote.
+                }
+                else if(delim.IndexOf(str[pos]) != -1)
+                {
+                    if(quoteChar == '\0')
+                    {
+                        ++pos;
+                        if(n > 0)
+                        {
+                            l.Add(new string(arr, 0, n));
+                            n = 0;
+                        }
+                        continue;
+                    }
+                }
+                
+                if(pos < str.Length)
+                {
+                    arr[n++] = str[pos++];
+                }
+
+            }
+
+            if(n > 0)
+            {
+                l.Add(new string(arr, 0, n));
+            }
+            if(quoteChar != '\0')
+            {
+                return null; // Unmatched quote.
+            }
+            return l.ToArray();
+        }
+
+        public static int checkQuote(string s)
+        {
+            return checkQuote(s, 0);
+        }
+        
+        //
+        // If a single or double quotation mark is found at the start position,
+        // then the position of the matching closing quote is returned. If no
+        // quotation mark is found at the start position, then 0 is returned.
+        // If no matching closing quote is found, then -1 is returned.
+        //
+        public static int checkQuote(string s, int start)
+        {
+            char quoteChar = s[start];
+            if(quoteChar == '"' || quoteChar == '\'')
+            {
+                start++;
+                int len = s.Length;
+                int pos;
+                while(start < len && (pos = s.IndexOf(quoteChar, start)) != -1)
+                {
+                    if(s[pos - 1] != '\\')
+                    {
+                        return pos;
+                    }
+                    start = pos + 1;
+                }
+                return -1; // Unmatched quote
+            }
+            return 0; // Not quoted
+        }
+
+        public static bool match(string s, string pat, bool emptyMatch)
+        {
+            Debug.Assert(s.Length > 0);
+            Debug.Assert(pat.Length > 0);
+
+            //
+            // If pattern does not contain a wildcard just compare strings.
+            //
+            int beginIndex = pat.IndexOf('*');
+            if(beginIndex < 0)
+            {
+                return s.Equals(pat);
+            }
+
+            //
+            // Make sure start of the strings match
+            //
+            if(beginIndex > s.Length || !s.Substring(0, beginIndex).Equals(pat.Substring(0, beginIndex)))
+            {
+                return false;
+            }
+
+            //
+            // Make sure there is something present in the middle to match the
+            // wildcard. If emptyMatch is true, allow a match of "".
+            //
+            int endLength = pat.Length - beginIndex - 1;
+            if(endLength > s.Length)
+            {
+                return false;
+            }
+            int endIndex = s.Length - endLength;
+            if(endIndex < beginIndex || (!emptyMatch && endIndex == beginIndex))
+            {
+                return false;
+            }
+
+            //
+            // Make sure end of the strings match
+            //
+            if(!s.Substring(endIndex, s.Length - endIndex).Equals(
+                   pat.Substring(beginIndex + 1, pat.Length - beginIndex - 1)))
+            {
+                return false;
+            }
+
+            return true;
+        }
+
+        private class OrdinalStringComparerImpl : System.Collections.Generic.IComparer<string>
+        {
+            public int Compare(string l, string r)
+            {
+                return string.CompareOrdinal(l, r);
+            }        
+        }
+        public static System.Collections.Generic.IComparer<string> OrdinalStringComparer =
+            new OrdinalStringComparerImpl();
+    }
+}