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#include <fstream>
#include <lib/base/eerror.h>
#include "xmlgenerator.h"
XmlGenerator::XmlGenerator(FILE *f) : m_file(f), m_indent(true), m_level(0)
{
::fprintf(m_file, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
}
XmlGenerator::~XmlGenerator()
{
}
void XmlGenerator::vprint(const char *fmt, va_list ap, bool newline)
{
unsigned int i;
if (m_indent)
for (i = 0; i < m_level; i++)
::fprintf(m_file, "\t");
::vfprintf(m_file, fmt, ap);
if (newline)
::fprintf(m_file, "\n");
}
void XmlGenerator::print(const char *fmt, ...)
{
va_list ap;
::va_start(ap, fmt);
vprint(fmt, ap, false);
::va_end(ap);
}
void XmlGenerator::printLn(const char *fmt, ...)
{
va_list ap;
::va_start(ap, fmt);
vprint(fmt, ap, true);
::va_end(ap);
}
void XmlGenerator::open(const std::string &tag, bool newline)
{
if (newline) {
printLn("<%s>", tag.c_str());
} else {
print("<%s>", tag.c_str());
m_indent = false;
}
m_tags.push(tag);
m_level++;
}
void XmlGenerator::open(const std::string &tag)
{
open(tag, true);
}
void XmlGenerator::close()
{
ASSERT(!m_tags.empty());
ASSERT(m_level > 0);
m_level--;
printLn("</%s>", m_tags.top().c_str());
m_indent = true;
m_tags.pop();
}
void XmlGenerator::comment(const std::string &str)
{
printLn("<!-- %s -->", str.c_str());
}
void XmlGenerator::commentFromErrno(const std::string &tag)
{
open(tag);
comment(strerror(errno));
close();
}
std::string XmlGenerator::cDataEscape(const std::string &str)
{
const std::string search = "]]>";
const std::string replace = "]]]]><![CDATA[>";
std::string ret;
size_t pos = 0, opos;
for (;;) {
opos = pos;
pos = str.find(search, opos);
if (pos == std::string::npos)
break;
ret.append(str, opos, pos - opos);
ret.append(replace);
pos += search.size();
}
ret.append(str, opos, std::string::npos);
return ret;
}
void XmlGenerator::cDataFromCmd(const std::string &tag, const std::string &cmd)
{
FILE *pipe = ::popen(cmd.c_str(), "re");
if (pipe == 0) {
commentFromErrno(tag);
return;
}
std::string result;
char *lineptr = NULL;
size_t n = 0;
for (;;) {
ssize_t ret = ::getline(&lineptr, &n, pipe);
if (ret < 0)
break;
result.append(lineptr, ret);
}
if (lineptr)
::free(lineptr);
::pclose(pipe);
cDataFromString(tag, result);
}
void XmlGenerator::cDataFromFile(const std::string &tag, const std::string &filename, const char *filter)
{
std::ifstream in(filename.c_str());
std::string line;
std::string content;
if (!in.good()) {
commentFromErrno(tag);
return;
}
while (std::getline(in, line))
if (!filter || !line.find(filter))
content += line + '\n';
in.close();
cDataFromString(tag, content);
}
void XmlGenerator::cDataFromString(const std::string &tag, const std::string &str)
{
bool indent = false;
open(tag);
printLn("<![CDATA[");
std::swap(m_indent, indent);
print("%s", cDataEscape(str).c_str());
printLn("]]>");
std::swap(m_indent, indent);
close();
}
void XmlGenerator::string(const std::string &tag, const std::string &str)
{
open(tag, false);
print("%s", str.c_str());
close();
}
void XmlGenerator::stringFromFile(const std::string &tag, const std::string &filename)
{
std::ifstream in(filename.c_str());
std::string line;
if (!in.good()) {
commentFromErrno(tag);
return;
}
std::getline(in, line);
in.close();
string(tag, line);
}
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