Re: replace string in stream

"Alex Blekhman" <>
Tue, 25 Mar 2008 11:43:47 +0200
"June Lee" wrote:

I have a function that read data byte and drmp to a file

how can I change the string <givenname xsi:nil='true'/> to

bool dump;
std::ofstream dumpfile;

int my_block_reader(void *userdata, const char *buf, size_t len)
if (dump == false) {
    if (strnicmp(buf, "<?xml", 5) == 0) {

If you need to process and transform XML files, then doing it by
hand is a dead end. You should use appropriate technology for
that. In order to reead and parse XML files use an XML parser; in
order to process XML files use and XSLT (Extensible Stylesheet
Language Transformations) engine. For example, for the following
XML file:

------- XMLFile1.xml -------
<?xml version="1.0" encoding="utf-8"?>

    <givenname xsi:nil='true'/>

You could use this transform:

------- XSLTFile1.xslt -----
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"

    <xsl:output method="xml" indent="yes"/>

    <xsl:template match="givenname[@xsi:nil='true']">
    <xsl:template match="@* | node()">
            <xsl:apply-templates select="@* | node()"/>


Then after applying the transformation you have the output:

------- output -------
<?xml version="1.0" encoding="utf-8"?>


Here are some example of using MSXML with C++:

"Program with DOM in C/C++ Using Smart Pointer Class Wrappers"


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