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<?xml version="1.0" encoding="utf-8"?>
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<!-- Downloaded on 12/6/2012 from http://www.gerixsoft.com/blog/xslt/json2xml -->
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<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
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<xsl:template match="json">
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<xsl:copy>
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<xsl:copy-of select="@*"/>
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<xsl:call-template name="json2xml">
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<xsl:with-param name="text" select="."/>
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</xsl:call-template>
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</xsl:copy>
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</xsl:template>
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<xsl:template name="json2xml">
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<xsl:param name="text"/>
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<xsl:variable name="mode0">
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<xsl:variable name="regexps" select="'//(.*?)\n', '/\*(.*?)\*/', '(''|")(([^\\]|\\[\\"''/btnvfr])*?)\3', '(-?\d+(\.\d+([eE][+-]?\d+)?|[eE][+-]?\d+))', '(-?[1-9]\d*)', '(-?0[0-7]+)', '(-?0x[0-9a-fA-F]+)', '([:,\{\}\[\]])', '(true|false)', '(null)'"/>
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<xsl:analyze-string select="$text" regex="{string-join($regexps,'|')}" flags="s">
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<xsl:matching-substring>
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<xsl:choose>
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<!-- single line comment -->
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<xsl:when test="regex-group(1)">
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<xsl:comment>
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<xsl:value-of select="regex-group(1)"/>
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</xsl:comment>
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<xsl:text> </xsl:text>
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</xsl:when>
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<!-- multi line comment -->
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<xsl:when test="regex-group(2)">
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<xsl:comment>
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<xsl:value-of select="regex-group(2)"/>
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</xsl:comment>
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</xsl:when>
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<!-- string -->
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<xsl:when test="regex-group(3)">
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<string>
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<xsl:analyze-string select="regex-group(4)" regex="\\([\\"'/btnvfr])" flags="s">
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<xsl:matching-substring>
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<xsl:variable name="s" select="regex-group(1)"/>
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<xsl:choose>
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<xsl:when test="$s=('\', '"', '''', '/')">
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<xsl:value-of select="regex-group(1)"/>
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</xsl:when>
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<xsl:when test="$s='b'">
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<!--xsl:text></xsl:text-->
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<xsl:message select="'escape sequense \b is not supported by XML'"/>
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<xsl:text>\b</xsl:text>
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</xsl:when>
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<xsl:when test="$s='t'">
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<xsl:text>	</xsl:text>
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</xsl:when>
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<xsl:when test="$s='n'">
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<xsl:text> </xsl:text>
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</xsl:when>
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<xsl:when test="$s='v'">
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<!--xsl:text></xsl:text-->
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<xsl:message select="'escape sequence \v is not supported by XML'"/>
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<xsl:text>\v</xsl:text>
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</xsl:when>
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<xsl:when test="$s='f'">
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<!--xsl:text></xsl:text-->
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<xsl:message select="'escape sequence \f is not supported by XML'"/>
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<xsl:text>\f</xsl:text>
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</xsl:when>
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<xsl:when test="$s='r'">
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<xsl:text> </xsl:text>
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</xsl:when>
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<xsl:otherwise>
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<xsl:message terminate="yes" select="'internal error'"/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:matching-substring>
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<xsl:non-matching-substring>
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<xsl:value-of select="."/>
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</xsl:non-matching-substring>
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</xsl:analyze-string>
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</string>
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</xsl:when>
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<!-- double -->
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<xsl:when test="regex-group(6)">
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<double>
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<xsl:value-of select="regex-group(6)"/>
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</double>
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</xsl:when>
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<!-- integer -->
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<xsl:when test="regex-group(9)">
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<integer>
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<xsl:value-of select="regex-group(9)"/>
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</integer>
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</xsl:when>
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<!-- octal -->
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<xsl:when test="regex-group(10)">
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<integer>
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<xsl:value-of xmlns:Integer="java:java.lang.Integer" select="Integer:parseInt(regex-group(10), 8)"/>
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</integer>
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</xsl:when>
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<!-- hex -->
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<xsl:when test="regex-group(11)">
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<integer>
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<xsl:value-of xmlns:Integer="java:java.lang.Integer" select="Integer:parseInt(replace(regex-group(11), '0x', ''), 16)"/>
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</integer>
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</xsl:when>
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<!-- symbol -->
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<xsl:when test="regex-group(12)">
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<symbol>
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<xsl:value-of select="regex-group(12)"/>
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</symbol>
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</xsl:when>
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<!-- boolean -->
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<xsl:when test="regex-group(13)">
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<boolean>
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<xsl:value-of select="regex-group(13)"/>
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</boolean>
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</xsl:when>
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<!-- null -->
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<xsl:when test="regex-group(14)">
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<null />
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</xsl:when>
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<xsl:otherwise>
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<xsl:message terminate="yes" select="'internal error'"/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:matching-substring>
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<xsl:non-matching-substring>
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<xsl:if test="normalize-space()!=''">
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<xsl:message select="concat('unknown token: ', .)"/>
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<xsl:value-of select="."/>
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</xsl:if>
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</xsl:non-matching-substring>
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</xsl:analyze-string>
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</xsl:variable>
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<xsl:variable name="mode1">
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<xsl:apply-templates mode="json2xml1" select="$mode0/node()[1]"/>
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</xsl:variable>
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<xsl:variable name="mode2">
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<xsl:apply-templates mode="json2xml2" select="$mode1"/>
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</xsl:variable>
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<xsl:variable name="mode3">
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<xsl:apply-templates mode="json2xml3" select="$mode2"/>
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</xsl:variable>
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<xsl:copy-of select="$mode3"/> <!-- change $mode3 to $mode[0-2] for easy debug -->
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</xsl:template>
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<!-- json2xml1 mode: group content between {} and [] into object and array elements -->
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<xsl:template mode="json2xml1" match="node()" priority="-9">
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<xsl:copy-of select="."/>
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<xsl:apply-templates mode="json2xml1" select="following-sibling::node()[1]"/>
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</xsl:template>
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<xsl:template mode="json2xml1" match="symbol[.=('}',']')]"/>
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<xsl:template mode="json2xml1" match="symbol[.=('{','[')]">
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<xsl:element name="{if (.='{') then 'object' else 'array'}">
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<xsl:apply-templates mode="json2xml1" select="following-sibling::node()[1]"/>
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</xsl:element>
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<xsl:variable name="level" select="count(preceding-sibling::symbol[.=('{','[')])-count(preceding-sibling::symbol[.=('}',']')])+1"/>
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<xsl:variable name="ender"
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select="following-sibling::symbol[.=('}',']') and count(preceding-sibling::symbol[.=('{','[')])-count(preceding-sibling::symbol[.=('}',']')])=$level][1]"/>
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<xsl:apply-templates mode="json2xml1" select="$ender/following-sibling::node()[1]"/>
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</xsl:template>
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<!-- json2xml2 mode: group <string>:<string|integer|double|object|array> into field element -->
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<xsl:template priority="-9" mode="json2xml2" match="@*|node()">
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<xsl:copy>
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<xsl:apply-templates mode="json2xml2" select="@*|node()"/>
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</xsl:copy>
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</xsl:template>
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<xsl:template mode="json2xml2"
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match="string[following-sibling::*[1]/self::symbol[.=':'] and following-sibling::*[2]/(self::string|self::integer|self::double|self::boolean|self::object|self::array|self::null)]"/>
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<xsl:template mode="json2xml2"
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match="symbol[.=':'][preceding-sibling::*[1]/self::string and following-sibling::*[1]/(self::string|self::integer|self::double|self::boolean|self::object|self::array|self::null)]">
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<field name="{preceding-sibling::*[1]}">
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<xsl:for-each select="following-sibling::*[1]">
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<xsl:copy>
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<xsl:apply-templates mode="json2xml2" select="@*|node()"/>
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</xsl:copy>
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</xsl:for-each>
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</field>
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</xsl:template>
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<xsl:template mode="json2xml2"
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match="*[self::string|self::integer|self::double|self::boolean|self::object|self::array|self::null][preceding-sibling::*[2]/self::string and preceding-sibling::*[1]/self::symbol[.=':']]"/>
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<!-- json2xml3 mode: drop comma between consecutive field and object elements -->
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<xsl:template priority="-9" mode="json2xml3" match="@*|node()">
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<xsl:copy>
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<xsl:apply-templates mode="json2xml3" select="@*|node()"/>
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</xsl:copy>
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</xsl:template>
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<xsl:template mode="json2xml3" match="object/symbol[.=','][preceding-sibling::*[1]/self::field and following-sibling::*[1]/self::field]"/>
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<xsl:template mode="json2xml3" match="array/symbol[.=','][preceding-sibling::*[1]/(self::string|self::integer|self::double|self::boolean|self::object|self::array|self::null) and following-sibling::*[1]/(self::string|self::integer|self::double|self::boolean|self::object|self::array|self::null)]"/>
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</xsl:stylesheet>
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