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More accuracy work with MinWords option of headline function

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contrib/tsearch2
- wparser_def.c

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+19

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`‎contrib/tsearch2/wparser_def.c‎`

Lines changed: 19 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -189,7 +189,7 @@ prsd_headline(PG_FUNCTION_ARGS)`
`189`	`189`	`intbestb=-1,`
`190`	`190`	`beste=-1;`
`191`	`191`	`intbestlen=-1;`
`192`		`-intpose=0,`
	`192`	`+intpose=0,posb,`
`193`	`193`	`poslen,`
`194`	`194`	`curlen;`
`195`	`195`
`@@ -229,15 +229,15 @@ prsd_headline(PG_FUNCTION_ARGS)`
`229`	`229`	`if (min_words >=max_words)`
`230`	`230`	`ereport(ERROR,`
`231`	`231`	`(errcode(ERRCODE_INVALID_PARAMETER_VALUE),`
`232`		`-errmsg("must beMinWords < MaxWords")));`
	`232`	`+errmsg("MinWordsmust beless than MaxWords")));`
`233`	`233`	`if (min_words <=0)`
`234`	`234`	`ereport(ERROR,`
`235`	`235`	`(errcode(ERRCODE_INVALID_PARAMETER_VALUE),`
`236`		`-errmsg("must beMinWords> 0")));`
	`236`	`+errmsg("MinWordsshould be positive")));`
`237`	`237`	`if (shortword<0)`
`238`	`238`	`ereport(ERROR,`
`239`	`239`	`(errcode(ERRCODE_INVALID_PARAMETER_VALUE),`
`240`		`-errmsg("mustbeShortWord >= 0")));`
	`240`	`+errmsg("ShortWord houldbe = 0")));`
`241`	`241`	`}`
`242`	`242`
`243`	`243`	`while (hlCover(prs,query,&p,&q))`
`@@ -261,6 +261,7 @@ prsd_headline(PG_FUNCTION_ARGS)`
`261`	`261`	`continue;`
`262`	`262`	`}`
`263`	`263`
	`264`	`+posb=p;`
`264`	`265`	`if (curlen<max_words)`
`265`	`266`	`{/* find good end */`
`266`	`267`	`for (i=i-1;i<prs->curwords&&curlen<max_words;i++)`
`@@ -278,6 +279,19 @@ prsd_headline(PG_FUNCTION_ARGS)`
`278`	`279`	`if (curlen >=min_words)`
`279`	`280`	`break;`
`280`	`281`	`}`
	`282`	`+if (curlen<min_words&&i>=prs->curwords ) {/* got end of text and our cover is shoter than min_words */`
	`283`	`+for(i=p;i>=0;i--) {`
	`284`	`+if (!NONWORDTOKEN(prs->words[i].type))`
	`285`	`+curlen++;`
	`286`	`+if (prs->words[i].item&& !prs->words[i].repeated)`
	`287`	`+poslen++;`
	`288`	`+if (NOENDTOKEN(prs->words[i].type)\|\|prs->words[i].len <=shortword)`
	`289`	`+continue;`
	`290`	`+if (curlen >=min_words)`
	`291`	`+break;`
	`292`	`+}`
	`293`	`+posb=(i>=0) ?i :0;`
	`294`	`+}`
`281`	`295`	`}`
`282`	`296`	`else`
`283`	`297`	`{/* shorter cover :((( */`
`@@ -298,7 +312,7 @@ prsd_headline(PG_FUNCTION_ARGS)`
`298`	`312`	`(bestlen >=0&& !(NOENDTOKEN(prs->words[pose].type)\|\|prs->words[pose].len <=shortword)&&`
`299`	`313`	`(NOENDTOKEN(prs->words[beste].type)\|\|prs->words[beste].len <=shortword)))`
`300`	`314`	`{`
`301`		`-bestb=p;`
	`315`	`+bestb=posb;`
`302`	`316`	`beste=pose;`
`303`	`317`	`bestlen=poslen;`
`304`	`318`	`}`

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`‎contrib/tsearch2/wparser_def.c‎`

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