Diffstat (limited to 'noncore/apps/opie-reader/CFilter.h') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/apps/opie-reader/CFilter.h | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/noncore/apps/opie-reader/CFilter.h b/noncore/apps/opie-reader/CFilter.h new file mode 100644 index 0000000..4f609dc --- a/dev/null +++ b/noncore/apps/opie-reader/CFilter.h @@ -0,0 +1,354 @@ +#ifndef __CFILTER_H +#define __CFILTER_H + +#include "CExpander.h" +#include "CEncoding.h" + +class CFilter : public CCharacterSource +{ + friend class CFilterChain; + protected: + CCharacterSource* parent; +public: + CFilter() : parent(NULL) {} + void setparent(CCharacterSource* p) { parent = p; } + virtual ~CFilter() {}; +}; + +class vanilla : public CFilter +{ +public: + vanilla() {} + virtual ~vanilla() {} +#ifdef _UNICODE + virtual tchar getch() +#else + virtual int getch() +#endif + { + return parent->getch(); + } +}; + +class CFilterChain +{ + CExpander* expander; + CEncoding* encoder; + CFilter* first; + CCharacterSource* front; + public: + CFilterChain(CEncoding* _e) : encoder(_e), first(NULL), front(_e) {}; + ~CFilterChain() + { + CCharacterSource* p = front; + while (p != encoder) + { + CFilter* pnext = (CFilter*)p; + p = ((CFilter*)p)->parent; + delete pnext; + } + delete encoder; + } + int getch() { return front->getch(); } + void addfilter(CFilter* p) + { + if (first == NULL) + { + front = first = p; + p->setparent(encoder); + } + else + { + p->setparent(front); + front = p; + } + } + void setsource(CExpander* p) + { + expander = p; + encoder->setparent(p); + } + void setencoder(CEncoding* p) + { + delete encoder; + encoder = p; + first->setparent(p); + encoder->setparent(expander); + } +}; + +class stripcr : public CFilter +{ +public: + stripcr() {} + virtual ~stripcr() {} +#ifdef _UNICODE + virtual tchar getch() + { + tchar ch; + do + { + ch = parent->getch(); + } + while (ch == 13); + return ch; + } +#else + virtual int getch() + { + int ch; + do + { + ch = parent->getch(); + } + while (ch == 13); + return ch; + } +#endif +}; + +class dehyphen : public CFilter +{ + bool m_bCharWaiting; + tchar m_nextChar; + public: + dehyphen() : m_bCharWaiting(false) {} + virtual ~dehyphen() {} + virtual tchar getch() + { + if (m_bCharWaiting) + { + m_bCharWaiting = false; + return m_nextChar; + } + tchar ch = parent->getch(); + if (ch != '-') return ch; + m_nextChar = parent->getch(); + if (m_nextChar != 10) + { + m_bCharWaiting = true; + return '-'; + } + return parent->getch(); + } +}; + +class striphtml : public CFilter +{ +public: + striphtml() {} + virtual ~striphtml() {} +#ifdef _UNICODE + virtual tchar getch() + { + tchar ch; + ch = parent->getch(); + while (ch == '<') + { + while (ch != '>') + { + ch = parent->getch(); + } + ch = parent->getch(); + } + if (ch == '&') + { + ch = parent->getch(); + if (ch == '#') + { + int id = 0; + while ((ch = parent->getch()) != ';') id = 10*id+ch-'0'; + ch = id; + } + } + return ch; + } +#else + virtual int getch() + { + int ch; + ch = parent->getch(); + while (ch == '<') + { + while (ch != '>') + { + ch = parent->getch(); + } + ch = parent->getch(); + } + if (ch == '&') + { + ch = parent->getch(); + if (ch == '#') + { + int id = 0; + while ((ch = parent->getch()) != ';') id = 10*id+ch-'0'; + ch = id; + } + } + return ch; + } +#endif +}; + +class unindent : public CFilter +{ + tchar lc; +public: + unindent() : lc(0) {} + virtual ~unindent() {} +#ifdef _UNICODE + virtual tchar getch() + { + tchar ch; + if (lc == 10) + { + while ((ch = parent->getch()) == ' '); + } + else ch = parent->getch(); + lc = ch; + return ch; + } +#else + virtual int getch() + { + int ch; + if (lc == 10) + { + while ((ch = parent->getch()) == ' '); + } + else ch = parent->getch(); + lc = ch; + return ch; + } +#endif +}; + +#ifdef _UNICODE +class repara : public CFilter +{ + tchar tch; +public: + repara() : tch(0) {} + virtual ~repara() {} + virtual tchar getch() + { + tchar ch = parent->getch(); + if (ch == 10) + { + if (tch == 10) + { + return ch; + } + else + { + tch = ch; + return ' '; + } + } + tch = ch; + return ch; + } +}; +#else +class repara : public CFilter +{ + int tch; +public: + repara() : tch(0) {} + virtual ~repara() {} + virtual int getch() + { + int ch = parent->getch(); + if (ch == 10) + { + if (tch == 10) + { + return ch; + } + else + { + tch = ch; + return ' '; + } + } + tch = ch; + return ch; + } +}; +#endif + +class indenter : public CFilter +{ + int amnt; + int indent; +public: + indenter(int _a=5) : amnt(_a), indent(0) {} + virtual ~indenter() {} +#ifdef _UNICODE + virtual tchar getch() + { + if (indent > 0) + { + indent--; + return ' '; + } + tchar ch = parent->getch(); + if (ch == 10) + { + indent = amnt; + } + return ch; + } +#else + virtual int getch() + { + if (indent > 0) + { + indent--; + return ' '; + } + int ch = parent->getch(); + if (ch == 10) + { + indent = amnt; + } + return ch; + } +#endif +}; + +class dblspce : public CFilter +{ + bool lastlf; +public: + dblspce() : lastlf(false) {} + virtual ~dblspce() {} +#ifdef _UNICODE + virtual tchar getch() + { + if (lastlf) + { + lastlf = false; + return 10; + } + tchar ch = parent->getch(); + lastlf = (ch == 10); + return ch; + } +#else + virtual int getch() + { + if (lastlf) + { + lastlf = false; + return 10; + } + int ch = parent->getch(); + lastlf = (ch == 10); + return ch; + } +#endif +}; + +#endif |