xhtml2fo.xsl

使用fop进行html到PDF文件的生成

    <xsl:attribute name="font-family">monospace</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="kbd">
    <xsl:attribute name="font-family">monospace</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="samp">
    <xsl:attribute name="font-family">monospace</xsl:attribute>
  </xsl:attribute-set>

  <xsl:attribute-set name="big">
    <xsl:attribute name="font-size">larger</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="small">
    <xsl:attribute name="font-size">smaller</xsl:attribute>
  </xsl:attribute-set>

  <xsl:attribute-set name="sub">
    <xsl:attribute name="baseline-shift">sub</xsl:attribute>
    <xsl:attribute name="font-size">smaller</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="sup">
    <xsl:attribute name="baseline-shift">super</xsl:attribute>
    <xsl:attribute name="font-size">smaller</xsl:attribute>
  </xsl:attribute-set>

  <xsl:attribute-set name="s">
    <xsl:attribute name="text-decoration">line-through</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="strike">
    <xsl:attribute name="text-decoration">line-through</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="del">
    <xsl:attribute name="text-decoration">line-through</xsl:attribute>
  </xsl:attribute-set>

  <xsl:attribute-set name="u">
    <xsl:attribute name="text-decoration">underline</xsl:attribute>
  </xsl:attribute-set>
  <xsl:attribute-set name="ins">
    <xsl:attribute name="text-decoration">underline</xsl:attribute>
  </xsl:attribute-set>

  <xsl:attribute-set name="abbr">
    <!-- e.g.,
    <xsl:attribute name="font-variant">small-caps</xsl:attribute>
    <xsl:attribute name="letter-spacing">0.1em</xsl:attribute>
    -->
  </xsl:attribute-set>

  <xsl:attribute-set name="acronym">
    <!-- e.g.,
    <xsl:attribute name="font-variant">small-caps</xsl:attribute>
    <xsl:attribute name="letter-spacing">0.1em</xsl:attribute>
    -->
  </xsl:attribute-set>

  <xsl:attribute-set name="q"/>
  <xsl:attribute-set name="q-nested"/>

  <!--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
       Image
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-->

  <xsl:attribute-set name="img">
  </xsl:attribute-set>

  <xsl:attribute-set name="img-link">
    <xsl:attribute name="border">2px solid</xsl:attribute>
  </xsl:attribute-set>

  <!--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
       Link
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-->

  <xsl:attribute-set name="a-link">
    <xsl:attribute name="text-decoration">underline</xsl:attribute>
    <xsl:attribute name="color">blue</xsl:attribute>
  </xsl:attribute-set>


  <!--======================================================================
      Templates
  =======================================================================-->

  <!--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
       Root
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-->

  <xsl:template match="html">
    <fo:root xsl:use-attribute-sets="root">
      <xsl:call-template name="process-common-attributes"/>
      <xsl:call-template name="make-layout-master-set"/>
      <xsl:apply-templates/>
    </fo:root>
  </xsl:template>

  <xsl:template name="make-layout-master-set">
    <fo:layout-master-set>
      <fo:simple-page-master master-name="all-pages"
                             xsl:use-attribute-sets="page">
        <fo:region-body margin-top="{$page-margin-top}"
                        margin-right="{$page-margin-right}"
                        margin-bottom="{$page-margin-bottom}"
                        margin-left="{$page-margin-left}"
                        column-count="{$column-count}"
                        column-gap="{$column-gap}"/>
        <xsl:choose>
          <xsl:when test="$writing-mode = 'tb-rl'">
            <fo:region-before extent="{$page-margin-right}"
                              precedence="true"/>
            <fo:region-after  extent="{$page-margin-left}"
                              precedence="true"/>
            <fo:region-start  region-name="page-header"
                              extent="{$page-margin-top}"
                              writing-mode="lr-tb"
                              display-align="before"/>
            <fo:region-end    region-name="page-footer"
                              extent="{$page-margin-bottom}"
                              writing-mode="lr-tb"
                              display-align="after"/>
          </xsl:when>
          <xsl:when test="$writing-mode = 'rl-tb'">
            <fo:region-before region-name="page-header"
                              extent="{$page-margin-top}"
                              display-align="before"/>
            <fo:region-after  region-name="page-footer"
                              extent="{$page-margin-bottom}"
                              display-align="after"/>
            <fo:region-start  extent="{$page-margin-right}"/>
            <fo:region-end    extent="{$page-margin-left}"/>
          </xsl:when>
          <xsl:otherwise><!-- $writing-mode = 'lr-tb' -->
            <fo:region-before region-name="page-header"
                              extent="{$page-margin-top}"
                              display-align="before"/>
            <fo:region-after  region-name="page-footer"
                              extent="{$page-margin-bottom}"
                              display-align="after"/>
            <fo:region-start  extent="{$page-margin-left}"/>
            <fo:region-end    extent="{$page-margin-bottom}"/>
          </xsl:otherwise>
        </xsl:choose>
      </fo:simple-page-master>
    </fo:layout-master-set>
  </xsl:template>

  <xsl:template match="head | script"/>

  <xsl:template match="body">
    <fo:page-sequence master-reference="all-pages">
      <fo:title>
        <xsl:value-of select="/html/head/title"/>
      </fo:title>
      <fo:static-content flow-name="page-header">
        <fo:block space-before.conditionality="retain"
                  space-before="{$page-header-margin}"
                  xsl:use-attribute-sets="page-header">
          <xsl:if test="$title-print-in-header = 'true'">
            <xsl:value-of select="/html/head/title"/>
          </xsl:if>
        </fo:block>
      </fo:static-content>
      <fo:static-content flow-name="page-footer">
        <fo:block space-after.conditionality="retain"
                  space-after="{$page-footer-margin}"
                  xsl:use-attribute-sets="page-footer">
          <xsl:if test="$page-number-print-in-footer = 'true'">
            <xsl:text>- </xsl:text>
            <fo:page-number/>
            <xsl:text> -</xsl:text>
          </xsl:if>
        </fo:block>
      </fo:static-content>
      <fo:flow flow-name="xsl-region-body">
        <fo:block xsl:use-attribute-sets="body">
          <xsl:call-template name="process-common-attributes"/>
          <xsl:apply-templates/>
        </fo:block>
      </fo:flow>
    </fo:page-sequence>
  </xsl:template>

  <!--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
   process common attributes and children
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-->

  <xsl:template name="process-common-attributes-and-children">
    <xsl:call-template name="process-common-attributes"/>
    <xsl:apply-templates/>
  </xsl:template>

  <xsl:template name="process-common-attributes">
    <xsl:attribute name="role">
      <xsl:value-of select="concat('', local-name())"/>
    </xsl:attribute>

    <xsl:choose>
      <xsl:when test="@xml:lang">
        <xsl:attribute name="xml:lang">
          <xsl:value-of select="@xml:lang"/>
        </xsl:attribute>
      </xsl:when>
      <xsl:when test="@lang">
        <xsl:attribute name="xml:lang">
          <xsl:value-of select="@lang"/>
        </xsl:attribute>
      </xsl:when>
    </xsl:choose>

    <xsl:choose>
      <xsl:when test="@id">
        <xsl:attribute name="id">
          <xsl:value-of select="@id"/>
        </xsl:attribute>
      </xsl:when>
      <xsl:when test="self::a/@name">
        <xsl:attribute name="id">
          <xsl:value-of select="@name"/>
        </xsl:attribute>
      </xsl:when>
    </xsl:choose>

    <xsl:if test="@align">
      <xsl:choose>
        <xsl:when test="self::caption">
        </xsl:when>
        <xsl:when test="self::img or self::object">
          <xsl:if test="@align = 'bottom' or @align = 'middle' or @align = 'top'">
            <xsl:attribute name="vertical-align">
              <xsl:value-of select="@align"/>
            </xsl:attribute>
          </xsl:if>
        </xsl:when>
        <xsl:otherwise>
          <xsl:call-template name="process-cell-align">
            <xsl:with-param name="align" select="@align"/>
          </xsl:call-template>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:if>
    <xsl:if test="@valign">
      <xsl:call-template name="process-cell-valign">
        <xsl:with-param name="valign" select="@valign"/>
      </xsl:call-template>
    </xsl:if>

    <xsl:if test="@style">
      <xsl:call-template name="process-style">
        <xsl:with-param name="style" select="@style"/>
      </xsl:call-template>
    </xsl:if>

  </xsl:template>

  <xsl:template name="process-style">
    <xsl:param name="style"/>
    <!-- e.g., style="text-align: center; color: red"
         converted to text-align="center" color="red" -->
    <xsl:variable name="name"
                  select="normalize-space(substring-before($style, ':'))"/>
    <xsl:if test="$name">
      <xsl:variable name="value-and-rest"
                    select="normalize-space(substring-after($style, ':'))"/>
      <xsl:variable name="value">
        <xsl:choose>
          <xsl:when test="contains($value-and-rest, ';')">
            <xsl:value-of select="normalize-space(substring-before(
                                  $value-and-rest, ';'))"/>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="$value-and-rest"/>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:variable>
      <xsl:choose>
        <xsl:when test="$name = 'width' and (self::col or self::colgroup)">
          <xsl:attribute name="column-width">
            <xsl:value-of select="$value"/>
          </xsl:attribute>
        </xsl:when>
        <xsl:when test="$name = 'vertical-align' and (
                                 self::table or self::caption or
                                 self::thead or self::tfoot or
                                 self::tbody or self::colgroup or
                                 self::col or self::tr or
                                 self::th or self::td)">
          <xsl:choose>
            <xsl:when test="$value = 'top'">
              <xsl:attribute name="display-align">before</xsl:attribute>
            </xsl:when>
            <xsl:when test="$value = 'bottom'">
              <xsl:attribute name="display-align">after</xsl:attribute>
            </xsl:when>
            <xsl:when test="$value = 'middle'">
              <xsl:attribute name="display-align">center</xsl:attribute>
            </xsl:when>
            <xsl:otherwise>
              <xsl:attribute name="display-align">auto</xsl:attribute>
              <xsl:attribute name="relative-align">baseline</xsl:attribute>
            </xsl:otherwise>
          </xsl:choose>
        </xsl:when>
        <xsl:otherwise>
          <xsl:attribute name="{$name}">
            <xsl:value-of select="$value"/>
          </xsl:attribute>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:if>
    <xsl:variable name="rest"
                  select="normalize-space(substring-after($style, ';'))"/>
    <xsl:if test="$rest">
      <xsl:call-template name="process-style">
        <xsl:with-param name="style" select="$rest"/>
      </xsl:call-template>
    </xsl:if>
  </xsl:template>


  <!--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
       Block-level
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-->

  <xsl:template match="h1">
    <fo:block xsl:use-attribute-sets="h1">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <xsl:template match="h2">
    <fo:block xsl:use-attribute-sets="h2">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <xsl:template match="h3">
    <fo:block xsl:use-attribute-sets="h3">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <xsl:template match="h4">
    <fo:block xsl:use-attribute-sets="h4">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <xsl:template match="h5">
    <fo:block xsl:use-attribute-sets="h5">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <xsl:template match="h6">
    <fo:block xsl:use-attribute-sets="h6">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <xsl:template match="p">
    <fo:block xsl:use-attribute-sets="p">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <!-- initial paragraph, preceded by h1..6 or div -->
  <xsl:template match="p[preceding-sibling::*[1][
                       self::h1 or self::h2 or self::h3 or
                       self::h4 or self::h5 or self::h6 or
                       self::div]]">
    <fo:block xsl:use-attribute-sets="p-initial">
      <xsl:call-template name="process-common-attributes-and-children"/>
    </fo:block>
  </xsl:template>

  <!-- initial paragraph, first child of div, body or td -->
  <xsl:template match="p[not(preceding-sibling::*) and (
                       parent::div or parent::body or