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* `nix-instantiate --{eval|parse}-only --xml': print an XML

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representation instead of an ATerm.
* Indent XML output.
This commit is contained in:
Eelco Dolstra 2006-08-16 10:32:30 +00:00
parent fe101fa785
commit 18e4ac0fc6
5 changed files with 82 additions and 13 deletions
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17
src/libutil/xml-writer.cc
View file

@ -3,8 +3,8 @@
#include "xml-writer.hh"
XMLWriter::XMLWriter(ostream & output)
: output(output)
XMLWriter::XMLWriter(bool indent, ostream & output)
: output(output), indent(indent)
{
output << "<?xml version='1.0' encoding='utf-8'?>\n";
closed = false;
@ -25,13 +25,22 @@ void XMLWriter::close()
}
void XMLWriter::indent_(unsigned int depth)
{
if (!indent) return;
output << string(depth * 2, ' ');
}
void XMLWriter::openElement(const string & name,
const XMLAttrs & attrs)
{
assert(!closed);
indent_(pendingElems.size());
output << "<" << name;
writeAttrs(attrs);
output << ">";
if (indent) output << "\n";
pendingElems.push_back(name);
}
@ -39,7 +48,9 @@ void XMLWriter::openElement(const string & name,
void XMLWriter::closeElement()
{
assert(!pendingElems.empty());
indent_(pendingElems.size() - 1);
output << "</" << pendingElems.back() << ">";
if (indent) output << "\n";
pendingElems.pop_back();
if (pendingElems.empty()) closed = true;
}
@ -49,9 +60,11 @@ void XMLWriter::writeEmptyElement(const string & name,
const XMLAttrs & attrs)
{
assert(!closed);
indent_(pendingElems.size());
output << "<" << name;
writeAttrs(attrs);
output << " />";
if (indent) output << "\n";
}

5
src/libutil/xml-writer.hh
View file

@ -18,13 +18,14 @@ private:
ostream & output;
bool indent;
bool closed;
list<string> pendingElems;
public:
XMLWriter(ostream & output);
XMLWriter(bool indent, ostream & output);
~XMLWriter();
void close();
@ -40,6 +41,8 @@ public:
private:
void writeAttrs(const XMLAttrs & attrs);
void indent_(unsigned int depth);
};