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author | Kari Salminen | 2008-02-08 04:11:20 +0000 |
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committer | Kari Salminen | 2008-02-08 04:11:20 +0000 |
commit | b6cad0f0ce9b266710383fceb69c9f4e3b0ffba2 (patch) | |
tree | 7959a6bd6614d26ec79a85b4be9316af4d210d94 /common/util.cpp | |
parent | e3852c92a77fef402bb37863a8430f76275c38bf (diff) | |
download | scummvm-rg350-b6cad0f0ce9b266710383fceb69c9f4e3b0ffba2.tar.gz scummvm-rg350-b6cad0f0ce9b266710383fceb69c9f4e3b0ffba2.tar.bz2 scummvm-rg350-b6cad0f0ce9b266710383fceb69c9f4e3b0ffba2.zip |
Added a simple non-optimized StringTokenizer-class for tokenizing strings. Also added a contains(char)-function to the String-class because it was handy in implementing the StringTokenizer.
svn-id: r30828
Diffstat (limited to 'common/util.cpp')
-rw-r--r-- | common/util.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/common/util.cpp b/common/util.cpp index 19f506cf6e..82a910f9a8 100644 --- a/common/util.cpp +++ b/common/util.cpp @@ -96,6 +96,33 @@ bool matchString(const char *str, const char *pat) { } } +StringTokenizer::StringTokenizer(const String &str, const String &delimiters) : _str(str), _delimiters(delimiters) { + reset(); +} + +void StringTokenizer::reset() { + _tokenBegin = _tokenEnd = 0; +} + +bool StringTokenizer::empty() const { + // Search for the next token's start (i.e. the next non-delimiter character) + for (uint i = _tokenEnd; i < _str.size(); i++) { + if (!_delimiters.contains(_str[i])) + return false; // Found a token so the tokenizer is not empty + } + // Didn't find any more tokens so the tokenizer is empty + return true; +} + +String StringTokenizer::nextToken() { + // Seek to next token's start (i.e. jump over the delimiters before next token) + for (_tokenBegin = _tokenEnd; _tokenBegin < _str.size() && _delimiters.contains(_str[_tokenBegin]); _tokenBegin++); + // Seek to the token's end (i.e. jump over the non-delimiters) + for (_tokenEnd = _tokenBegin; _tokenEnd < _str.size() && !_delimiters.contains(_str[_tokenEnd]); _tokenEnd++); + // Return the found token + return String(_str.c_str() + _tokenBegin, _tokenEnd - _tokenBegin); +} + // // Print hexdump of the data passed in // |