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60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
// Matt Wells, copyright Jul 2005
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#ifndef _POS_H_
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#define _POS_H_
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#include "Words.h"
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// this class is used to measure the number of characters between two "words"
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// (as defined in the Words.cpp class) in units of "characters". A utf8
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// character can be 1, 2, 3 or 4 bytes, so be careful.
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#define POS_LOCALBUFSIZE 20
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class Pos {
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public:
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Pos();
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~Pos();
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void reset();
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bool set ( class Words *words ,
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class Sections *sections ,
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char *f = NULL ,
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char *fend = NULL ,
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int32_t *flen = NULL ,
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int32_t a = 0 ,
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int32_t b = -1 ,
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// you can provide it with a buffer to prevent a malloc
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char *buf = NULL ,
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int32_t bufSize= 0 );
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// . filter out xml words [a,b] into plain text, stores into "p"
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// . will not exceed "pend"
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// . returns number of BYTES stored into "p"
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int32_t filter ( char *p ,
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char *pend ,
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class Words *words ,
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int32_t a = 0 ,
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int32_t b = -1 ,
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class Sections *sections = NULL );
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int32_t getMemUsed () { return m_bufSize; };
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// . the position in CHARACTERS of word i is given by m_pos[i]
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// . this is NOT the byte position. you can have 2, 3 or even 4
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// byte characters in utf8. the purpose here is for counting
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// "letters" or "characters" for formatting purposes.
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int32_t *m_pos;
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int32_t m_numWords;
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char m_localBuf [ POS_LOCALBUFSIZE ];
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char *m_buf;
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int32_t m_bufSize;
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bool m_needsFree;
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};
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#endif
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