diff options
Diffstat (limited to 'tools/minicargo/helpers.h')
| -rw-r--r-- | tools/minicargo/helpers.h | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/tools/minicargo/helpers.h b/tools/minicargo/helpers.h index f2679ef4..1099778b 100644 --- a/tools/minicargo/helpers.h +++ b/tools/minicargo/helpers.h @@ -29,250 +29,5 @@ public: } }; -/// Path helper class (because I don't want to include boost) -class path -{ -#ifdef _WIN32 - static const char SEP = '\\'; -#else - static const char SEP = '/'; -#endif - - ::std::string m_str; - - path() - { - } -public: - path(const ::std::string& s): - path(s.c_str()) - { - } - path(const char* s): - m_str(s) - { - // 1. Normalise path separators to the system specified separator - for(size_t i = 0; i < m_str.size(); i ++) - { - if( m_str[i] == '/' || m_str[i] == '\\' ) - m_str[i] = SEP; - } - - // 2. Remove any trailing separators - if( !m_str.empty() ) - { - while(!m_str.empty() && m_str.back() == SEP ) - m_str.pop_back(); - if(m_str.empty()) - { - m_str.push_back(SEP); - } - } - else - { - throw ::std::runtime_error("Empty path being constructed"); - } - } - - path operator/(const path& p) const - { - if(p.m_str[0] == '/') - throw ::std::runtime_error("Appending an absolute path to another path"); - return *this / p.m_str.c_str(); - } - /// Append a relative path - path operator/(const char* o) const - { - if (o[0] == '/') - throw ::std::runtime_error("Appending an absolute path to another path"); - auto rv = *this; - rv.m_str.push_back(SEP); - rv.m_str.append(o); - return rv; - } - /// Add an arbitary string to the final component - path operator+(const char* o) const - { - if( ::std::strchr(o, SEP) != nullptr ) - throw ::std::runtime_error("Appending a string containing the path separator (with operator+)"); - auto rv = *this; - rv.m_str.append(o); - return rv; - } - - path parent() const - { - auto pos = m_str.find_last_of(SEP); - if(pos == ::std::string::npos) - { - return *this; - } - else - { - path rv; - rv.m_str = m_str.substr(0, pos); - return rv; - } - } - - operator ::std::string() const - { - return m_str; - } - - class ComponentsIter - { - const path& p; - size_t pos; - size_t end; - - friend class path; - ComponentsIter(const path& p, size_t i): p(p), pos(i) { - end = p.m_str.find(SEP, pos); - if(end == ::std::string::npos) - end = p.m_str.size(); - } - public: - string_view operator*() const { - return string_view(p.m_str.c_str() + pos, end - pos); - } - void operator++() { - if(end == p.m_str.size()) - pos = end; - else - { - pos = end+1; - end = p.m_str.find(SEP, pos); - if(end == ::std::string::npos) - end = p.m_str.size(); - } - } - bool operator!=(const ComponentsIter& x) const { - return pos != x.pos; - } - }; - ComponentsIter begin() const { - return ComponentsIter(*this, 0); - } - ComponentsIter end() const { - return ComponentsIter(*this, m_str.size()); - } - - path normalise() const - { - path rv; - rv.m_str.reserve( m_str.size()+1 ); - - for(auto comp : *this) - { - if( comp == "." ) { - // Ignore. - } - else if( comp == ".." ) - { - // If the path is empty, OR the last element is a "..", push the element - if( rv.m_str.empty() - || (rv.m_str.size() == 3 && rv.m_str[0] == '.' && rv.m_str[1] == '.' && rv.m_str[2] == SEP) - || (rv.m_str.size() > 4 && *(rv.m_str.end()-4) == SEP && *(rv.m_str.end()-3) == '.' && *(rv.m_str.end()-2) == '.' && *(rv.m_str.end()-1) == SEP ) - ) - { - // Push - rv.m_str += comp; - rv.m_str += SEP; - } - else - { - rv.m_str.pop_back(); - auto pos = rv.m_str.find_last_of(SEP); - if(pos == ::std::string::npos) - { - rv.m_str.resize(0); - } - else if( pos == 0 ) - { - // Keep. - } - else - { - rv.m_str.resize(pos+1); - } - } - } - else { - rv.m_str += comp; - rv.m_str += SEP; - } - } - rv.m_str.pop_back(); - return rv; - } -#if 0 - void normalise_in_place() - { - size_t insert_point = 0; - - for(size_t read_pos = 0; read_pos < m_str.size(); read_pos ++) - { - auto pos = m_str.find_first_of(SEP, read_pos); - if(pos == ::std::string::npos) - pos = m_str.size(); - auto comp = string_view(m_str.c_str() + read_pos, pos - read_pos); - - bool append; - if(comp == ".") - { - // Advance read without touching insert - append = false; - } - else if( comp == ".." ) - { - // Consume parent (if not a relative component already) - // Move insertion point back to the previous separator - auto pos = m_str.find_last_of(SEP, insert_point); - if(pos == ::std::string::npos) - { - // Only one component currently (or empty) - append = true; - } - else if(string_view(m_str.c_str() + pos+1, insert_point - pos-1) == "..") - { - // Last component is ".." - keep adding - append = true; - } - else - { - insert_point = pos; - append = false; - } - } - else - { - append = true; - } - - if(append) - { - if( read_pos != insert_point ) - { - //assert(read_pos > insert_point); - while(read_pos < pos) - { - m_str[insert_point++] = m_str[read_pos++]; - } - } - } - else - { - read_pos = pos; - } - } - } -#endif - - friend ::std::ostream& operator<<(::std::ostream& os, const path& p) - { - return os << p.m_str; - } -}; } // namespace helpers |