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author | David Adam <zanchey@ucc.gu.uwa.edu.au> | 2015-07-26 10:20:13 +0800 |
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committer | David Adam <zanchey@ucc.gu.uwa.edu.au> | 2015-07-26 10:20:13 +0800 |
commit | 3929e9de0e69666b37df87347d5ce15663e81347 (patch) | |
tree | b2701c439c0260840ce1c68beaebf7de1178cc53 /src/wcstringutil.cpp | |
parent | 793e1afa084982dac92c4fe19e50c25e326a79c2 (diff) | |
parent | f4d1657c22c81a7720a91026f915b80d2d6aa6e8 (diff) |
Merge branch 'master' into iwyu
Diffstat (limited to 'src/wcstringutil.cpp')
-rw-r--r-- | src/wcstringutil.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/wcstringutil.cpp b/src/wcstringutil.cpp new file mode 100644 index 00000000..e61e331b --- /dev/null +++ b/src/wcstringutil.cpp @@ -0,0 +1,40 @@ +/** \file wcstringutil.cpp + +Helper functions for working with wcstring +*/ + +#include "config.h" // IWYU pragma: keep + +#include "wcstringutil.h" + +typedef wcstring::size_type size_type; + +wcstring_range wcstring_tok(wcstring& str, const wcstring &needle, wcstring_range last) +{ + size_type pos = last.second == wcstring::npos ? wcstring::npos : last.first; + if (pos != wcstring::npos && last.second != wcstring::npos) pos += last.second; + if (pos != wcstring::npos && pos != 0) ++pos; + if (pos == wcstring::npos || pos >= str.size()) + { + return std::make_pair(wcstring::npos, wcstring::npos); + } + + if (needle.empty()) + { + return std::make_pair(pos, wcstring::npos); + } + + pos = str.find_first_not_of(needle, pos); + if (pos == wcstring::npos) return std::make_pair(wcstring::npos, wcstring::npos); + + size_type next_pos = str.find_first_of(needle, pos); + if (next_pos == wcstring::npos) + { + return std::make_pair(pos, wcstring::npos); + } + else + { + str[next_pos] = L'\0'; + return std::make_pair(pos, next_pos - pos); + } +} |