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Funções da corda de XSL

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corda ()

A corda da função () transforma o argumento em uma corda. Esta função não é usada usualy diretamente nos stylesheets como em a maioria de casos chamados por um defeito. O stylesheet 1 de XSL mostra os exemplos do número na conversão de corda. Observar os resultados das divisões zero.



XML Source

<source>
<number>9</number>
<number>0</number>
<number>-9</number>
<number/>
</source>


Output

<P>9</P>
<P>NaN</P>
<P>9/0 = Infinity</P>
<P>-9/0 = -Infinity</P>
<P>0/0 = NaN</P>


XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:variable name="A" select="number(//number[1])"/>
<xsl:variable name="B" select="number(//number[2])"/>
<xsl:variable name="C" select="number(//number[3])"/>
<xsl:variable name="D" select="number(//number[4])"/>
<xsl:template match="/">
<P>
<xsl:value-of select="string(number($A))"/>
</P>
<P>
<xsl:value-of select="string(number($D))"/>
</P>
<P>
<xsl:value-of select="$A"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$B"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="string($A div $B)"/>
</P>
<P>
<xsl:value-of select="$C"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$B"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="string($C div $B)"/>
</P>
<P>
<xsl:value-of select="$B"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$B"/>
<xsl:text> = </xsl:text>
<xsl:value-of select="$B div $B"/>
</P>
</xsl:template>
</xsl:stylesheet>



Concatination

A função do concat da corda retorna a concatenação dos argumentos passados a ela.



XML Source

<source>
<text>Start</text>
<text>Body</text>
<text>Finish</text>
</source>
Output

<P>Start - Body - Finish</P>


XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:variable name="T" select="concat(//text[1],' - ',//text[2],' - ',//text[3])"/>
<xsl:template match="/">
<P>
<xsl:value-of select="$T"/>
</P>
</xsl:template>
</xsl:stylesheet>



Sarts-Com a função

A inicí-com a função os retornos verdadeiros se a primeira corda do argumento começar com uma segunda corda do argumento, se não retornará falso. Contem a função os retornos verdadeiros se a primeira corda do argumento contiver a segunda corda do argumento, se não retornará falso.



XML Source

<source>
<text>Welcome to XSL world.</text>
<string>Welcome</string>
<string>XSL</string>
<string>XML</string>
</source>


Output

<TABLE border="1">
<TR>
<TH colspan="3">Welcome to XSL world.</TH>
</TR>
<TR>
<TH>string</TH>
<TH>starts-with</TH>
<TH>contains</TH>
</TR>
<TR>
<TD>Welcome</TD>
<TD>true</TD>
<TD>true</TD>
</TR>
<TR>
<TD>XSL</TD>
<TD>false</TD>
<TD>true</TD>
</TR>
<TR>
<TD>XML</TD>
<TD>false</TD>
<TD>false</TD>
</TR>
</TABLE>


XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<TABLE border="1">
<TR>
<TH colspan="3">
<xsl:value-of select="//text"/>
</TH>
</TR>
<TR>
<TH>string</TH>
<TH>starts-with</TH>
<TH>contains</TH>
</TR>
<xsl:for-each select="//string">
<TR>
<TD>
<xsl:value-of select="."/>
</TD>
<TD>
<xsl:value-of select="starts-with(//text,.)"/>
</TD>
<TD>
<xsl:value-of select="contains(//text,.)"/>
</TD>
</TR>
</xsl:for-each>
</TABLE>
</xsl:template>
</xsl:stylesheet>



Substring-Antes da função

Substring-antes da função retornar um substring da primeira corda do argumento que precede substring-após a função que segue a primeira ocorrência de uma segunda corda do argumento na primeira corda do argumento. A função do Substring retorna um substring do primeiro argumento que começa por uma posição especificada no segundo argumento com o comprimento especificado no terceiro argumento. Se o terceiro argumento não for especificado, retornos que o substring que começa por uma posição especificou em um segundo argumento e em continuar até a extremidade de uma corda. A contagem começos com 1.



XML Source

<source>
<text>Welcome to XSL world.</text>
<string>XSL</string>
<start>4</start>
<end>10</end>
</source>


Output

<DIV>
<B>Text: </B>Welcome to XSL world.</DIV>
<B>Text before XSL: </B>Welcome to <DIV>
<B>Text after XSL: </B> world.</DIV>
<DIV>
<B>Text from position 4: </B>come to XSL world.</DIV>
<DIV> <B>Text from position 4 of length 10: </B>come to XS</DIV>


XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<DIV>
<B>
<xsl:text>Text: </xsl:text>
</B>
<xsl:value-of select="//text"/>
</DIV>
<B>
<xsl:text>Text before </xsl:text>
<xsl:value-of select="//string"/>
<xsl:text>: </xsl:text>
</B>
<xsl:value-of select="substring-before(//text,//string)"/>
<DIV>
<B>
<xsl:text>Text after </xsl:text>
<xsl:value-of select="//string"/>
<xsl:text>: </xsl:text>
</B>
<xsl:value-of select="substring-after(//text,//string)"/>
</DIV>
<DIV>
<B>
<xsl:text>Text from position </xsl:text>
<xsl:value-of select="//start"/>
<xsl:text>: </xsl:text>
</B>
<xsl:value-of select="substring(//text,//start)"/>
</DIV>
<DIV>
<B>
<xsl:text>Text from position </xsl:text>
<xsl:value-of select="//start"/>
<xsl:text> of length </xsl:text>
<xsl:value-of select="//end"/>
<xsl:text>: </xsl:text>
</B>
<xsl:value-of select="substring(//text,//start,//end)"/>
</DIV>
</xsl:template>
</xsl:stylesheet>



Função do Corda-Comprimento

a função do “corda-comprimento” retorna o número dos caráteres em uma corda. a função do “normaliz-espaço” retorna a corda do argumento com um espaço branco normalizado conduzir descascando e arrastar a um whitespace e substituindo as seqüências de caráteres do whitespace pelo único espaço branco.



XML Source

<source>
<P>
<text>Normalized text</text>
<text>Sequences of whitespace characters</text>
<text> Leading and trailing whitespace. </text>
</P>
</source>


Output

<TABLE>
<TR>
<TH colspan="4">Normalized text</TH>
</TR>
<TR>
<TD>Starting length:</TD>
<TD>15</TD>
<TD>Normalized length:</TD>
<TD>15</TD>
</TR>
<TR>
<TH colspan="4">Sequences of whitespace characters</TH>
</TR>
<TR>
<TD>Starting length:</TD>
<TD>41</TD>
<TD>Normalized length:</TD>
<TD>34</TD>
</TR>
<TR>
<TH colspan="4"> Leading and trailing whitespace. </TH>
</TR>
<TR>
<TD>Starting length:</TD>
<TD>40</TD>
<TD>Normalized length:</TD>
<TD>32</TD>
</TR>
</TABLE>


XSL stylesheet

<xsl:stylesheet version = '1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:template match="/">
<TABLE>
<xsl:for-each select="//text">
<TR>
<TH colspan="4">
<xsl:value-of select="."/>
</TH>
</TR>
<TR>
<TD>Starting length:</TD>
<TD>
<xsl:value-of select="string-length(.)"/>
</TD>
<TD>Normalized length:</TD>
<TD>
<xsl:value-of select="string-length(normalize-space(.))"/> </TD>
</TR>
</xsl:for-each>
</TABLE>
</xsl:template>
</xsl:stylesheet>





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