projects / apple / icu.git / blame
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1 | // © 2016 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html | |
| 374ca955 A |
3 | /* |
| 4 | ********************************************************************** | |
| 4388f060 | 5 | * Copyright (c) 2004-2011, International Business Machines |
| 374ca955 A |
6 | * Corporation and others. All Rights Reserved. |
| 7 | ********************************************************************** | |
| 8 | * Author: Alan Liu | |
| 9 | * Created: March 22 2004 | |
| 10 | * Since: ICU 3.0 | |
| 11 | ********************************************************************** | |
| 12 | */ | |
| 13 | #ifndef __ICU_INTLTEST_TOKITER__ | |
| 14 | #define __ICU_INTLTEST_TOKITER__ | |
| 15 | ||
| 46f4442e A |
16 | #include "intltest.h" |
| 17 | ||
| 374ca955 A |
18 | class TextFile; |
| 19 | ||
| 20 | /** | |
| 21 | * An iterator class that returns successive string tokens from some | |
| 4388f060 A |
22 | * source. String tokens are, in general, separated by Pattern_White_Space |
| 23 | * in the source test. Furthermore, they may be delimited by | |
| 374ca955 A |
24 | * either single or double quotes (opening and closing quotes must |
| 25 | * match). Escapes are processed using standard ICU unescaping. | |
| 26 | */ | |
| 27 | class TokenIterator { | |
| 28 | public: | |
| 29 | ||
| 30 | /** | |
| 31 | * Construct an iterator over the tokens returned by the given | |
| 32 | * TextFile, ignoring blank lines and comment lines (first | |
| 33 | * non-blank character is '#'). Note that trailing comments on a | |
| 34 | * line, beginning with the first unquoted '#', are recognized. | |
| 35 | */ | |
| 36 | TokenIterator(TextFile* r); | |
| 37 | ||
| 38 | virtual ~TokenIterator(); | |
| 39 | ||
| 40 | /** | |
| 41 | * Return the next token from this iterator. | |
| 42 | * @return TRUE if a token was read, or FALSE if no more tokens | |
| 43 | * are available or an error occurred. | |
| 44 | */ | |
| 45 | UBool next(UnicodeString& token, UErrorCode& ec); | |
| 46 | ||
| 47 | /** | |
| 48 | * Return the one-based line number of the line of the last token | |
| 49 | * returned by next(). Should only be called after a call to | |
| 50 | * next(); otherwise the return value is undefined. | |
| 51 | */ | |
| 52 | int32_t getLineNumber() const; | |
| 53 | ||
| 54 | /** | |
| 55 | * Return a string description of the position of the last line | |
| 56 | * returned by readLine() or readLineSkippingComments(). | |
| 57 | */ | |
| 58 | //public String describePosition() { | |
| 59 | // return reader.describePosition() + ':' + (lastpos+1); | |
| 60 | //} | |
| 61 | ||
| 62 | private: | |
| 63 | UBool nextToken(UnicodeString& token, UErrorCode& ec); | |
| 64 | ||
| 65 | TextFile* reader; // alias | |
| 66 | UnicodeString line; | |
| 67 | UBool done; | |
| 68 | UBool haveLine; | |
| 69 | int32_t pos; | |
| 70 | int32_t lastpos; | |
| 71 | }; | |
| 72 | ||
| 73 | #endif |