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Diffstat (limited to 'xsd/libxsd/xsd/cxx/ro-string.txx')
-rw-r--r-- | xsd/libxsd/xsd/cxx/ro-string.txx | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/xsd/libxsd/xsd/cxx/ro-string.txx b/xsd/libxsd/xsd/cxx/ro-string.txx new file mode 100644 index 0000000..58efef0 --- /dev/null +++ b/xsd/libxsd/xsd/cxx/ro-string.txx @@ -0,0 +1,133 @@ +// file : xsd/cxx/ro-string.txx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2005-2010 Code Synthesis Tools CC +// license : GNU GPL v2 + exceptions; see accompanying LICENSE file + +namespace xsd +{ + namespace cxx + { + template <typename C> + typename ro_string<C>::size_type ro_string<C>:: + find (C c, size_type pos) const + { + size_type r (npos); + + if (pos < size_) + { + if (const C* p = traits_type::find(data_ + pos, size_ - pos, c)) + r = p - data_; + } + + return r; + } + + template<typename C> + typename ro_string<C>::size_type + trim_left (ro_string<C>& s) + { + typename ro_string<C>::size_type size (s.size ()); + + if (size != 0) + { + const C* f (s.data ()); + const C* l (f + size); + const C* of (f); + + while (f < l && + (*f == C (0x20) || *f == C (0x0A) || + *f == C (0x0D) || *f == C (0x09))) + ++f; + + if (f != of) + { + size = f <= l ? l - f : 0; + s.assign ((f <= l ? f : 0), size); + } + } + + return size; + } + + template<typename C> + typename ro_string<C>::size_type + trim_right (ro_string<C>& s) + { + typename ro_string<C>::size_type size (s.size ()); + + if (size != 0) + { + const C* f (s.data ()); + const C* l (f + size - 1); + const C* ol (l); + + while (l > f && + (*l == C (0x20) || *l == C (0x0A) || + *l == C (0x0D) || *l == C (0x09))) + --l; + + if (l != ol) + { + size = f <= l ? l - f + 1 : 0; + s.assign ((f <= l ? f : 0), size); + } + } + + return size; + } + + template<typename C> + typename ro_string<C>::size_type + trim (ro_string<C>& s) + { + typename ro_string<C>::size_type size (s.size ()); + + if (size != 0) + { + const C* f (s.data ()); + const C* l (f + size); + + const C* of (f); + + while (f < l && + (*f == C (0x20) || *f == C (0x0A) || + *f == C (0x0D) || *f == C (0x09))) + ++f; + + --l; + + const C* ol (l); + + while (l > f && + (*l == C (0x20) || *l == C (0x0A) || + *l == C (0x0D) || *l == C (0x09))) + --l; + + if (f != of || l != ol) + { + size = f <= l ? l - f + 1 : 0; + s.assign ((f <= l ? f : 0), size); + } + } + + return size; + } + + template<typename C> + std::basic_string<C> + trim (const std::basic_string<C>& s) + { + ro_string<C> tmp (s); + typename ro_string<C>::size_type size (tmp.size ()); + trim (tmp); + + // If we didn't change the string then return the original to help + // avoid copying for smart (ref counted) string implementations. + // + if (size == tmp.size ()) + return s; + else + return tmp; + } + } +} |