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type_parser.py
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type_parser.py
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#
# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
#
class TypeParserGenerator(object):
def __init__(self, cTypeDict):
self._cTypeDict = cTypeDict
pass
def GenerateTypeParser(self, file, ctype):
print "generating parser for %s" %ctype.getName()
start = """
bool %s::XmlParse(const xml_node &parent) {
for (xml_node node = parent.first_child(); node;
node = node.next_sibling()) {
""" % ctype.getName()
file.write(start)
for member in ctype.getDataMembers():
file.write(' if (strcmp(node.name(), "%s") == 0) {\n' %
member.xsd_object.getName())
indent = ' ' * 12
cpptype = member.ctypename
if cpptype == 'int':
fmt = 'if (!ParseInteger(node, &%s)) return false;\n'
file.write(indent + fmt % member.membername)
elif cpptype == 'uint64_t':
fmt = 'if (!ParseUnsignedLong(node, &%s)) return false;\n'
file.write(indent + fmt % member.membername)
elif cpptype == 'bool':
fmt = 'if (!ParseBoolean(node, &%s)) return false;\n'
file.write(indent + fmt % member.membername)
elif cpptype == 'std::string':
fmt = '%s = node.child_value();\n'
file.write(indent + fmt % member.membername)
file.write(indent + 'boost::trim(%s);\n' % member.membername)
elif cpptype == 'time_t':
if member.xsd_object.getType() == 'xsd:dateTime':
fmt = 'if (!ParseDateTime(node, &%s)) return false;\n'
file.write(indent + fmt % member.membername)
elif member.xsd_object.getType() == 'xsd:time':
fmt = 'if (!ParseTime(node, &%s)) return false;\n'
file.write(indent + fmt % member.membername)
elif member.isSequence:
if member.isComplex:
item = """
%s var;
var.Clear();
if (!var.XmlParse(node)) return false;
%s.push_back(var);
""" % (member.sequenceType, member.membername)
file.write(item)
elif member.sequenceType == 'std::string':
item = """
string var(node.child_value());
boost::trim(var);
%s.push_back(var);
""" % member.membername
file.write(item)
elif member.sequenceType == 'int':
item = """
int var;
if (!ParseInteger(node, &var)) return false;
%s.push_back(var);
""" % member.membername
file.write(item)
else:
file.write(' ' * 12 + '// TODO: sequence of '
+ member.sequenceType)
elif member.isComplex:
fmt = 'if (!%s.XmlParse(node)) return false;\n'
file.write(indent + fmt % member.membername)
file.write(' }\n')
file.write(' }\n return true;\n}\n')
static_fn = """
bool %s::XmlParseProperty(const xml_node &parent,
auto_ptr<AutogenProperty> *resultp) {
%s *ptr = new %s();
resultp->reset(ptr);
if (!ptr->XmlParse(parent)) {
return false;
}
return true;
}
""" % (ctype.getName(), ctype.getName(), ctype.getName())
file.write(static_fn)
export = """
void %s::Encode(xml_node *node_p) const {
pugi::xml_node node_c;
""" % (ctype.getName())
file.write(export)
for member in ctype.getDataMembers():
indent = ' ' * 4
cpptype = member.ctypename
if cpptype == 'int':
file.write(indent + "// Add child node \n");
fmt = 'node_c = node_p->append_child("%s");\n'
file.write(indent + fmt % member.elementname)
fmt = 'node_c.text().set(%s::%s);\n\n'
file.write(indent + fmt % (ctype.getName(),member.membername))
if cpptype == 'uint64_t':
cdecl = """
node_c = node_p->append_child("%(elementname)s");
{
ostringstream oss;
oss << %(membername)s;
node_c.text().set(oss.str().c_str());
}
""" % {'elementname': member.xsd_object.getName(), 'membername': member.membername}
file.write(cdecl)
elif cpptype == 'bool':
file.write(indent + "// Add child node \n");
fmt = 'node_c = node_p->append_child("%s");\n'
file.write(indent + fmt % member.elementname)
fmt = 'node_c.text().set(%s::%s);\n\n'
file.write(indent + fmt % (ctype.getName(),member.membername))
elif cpptype == 'std::string':
file.write(indent + "// Add child node \n");
fmt = 'node_c = node_p->append_child("%s");\n'
file.write(indent + fmt % member.elementname)
fmt = 'node_c.text().set(%s::%s.c_str());\n\n'
file.write(indent + fmt % (ctype.getName(),member.membername))
elif cpptype == 'time_t':
file.write(indent + "// Add child node \n");
fmt = 'node_c = node_p->append_child("%s");\n'
file.write(indent + fmt % member.elementname)
if member.xsd_object.getType() == 'xsd:dateTime':
fmt = 'node_c.text().set(FormatDateTime(&%s).c_str());\n\n'
elif member.xsd_object.getType() == 'xsd:time':
fmt = 'node_c.text().set(FormatTime(&%s).c_str());\n\n'
file.write(indent + fmt % (member.membername))
elif member.isSequence and member.isComplex:
item = """
for (%(type)s::const_iterator iter = %(membername)s.begin();
iter != %(membername)s.end(); ++iter) {
node_c = node_p->append_child("%(elementname)s");
iter->Encode(&node_c);
}
""" % {'type': cpptype,
'membername': member.membername,
'elementname': member.elementname }
file.write(item)
elif member.isSequence and member.sequenceType == 'std::string':
item = """
for (%(type)s::const_iterator iter = %(membername)s.begin();
iter != %(membername)s.end(); ++iter) {
node_c = node_p->append_child("%(elementname)s");
std::string str = *iter;
node_c.text().set(str.c_str());
}
""" % {'type': cpptype,
'membername': member.membername,
'elementname': member.elementname }
file.write(item)
elif member.isSequence:
item = """
for (%(type)s::const_iterator iter = %(membername)s.begin();
iter != %(membername)s.end(); ++iter) {
node_c = node_p->append_child("%(elementname)s");
node_c.text().set(*iter);
}
""" % {'type': cpptype,
'membername': member.membername,
'elementname': member.elementname }
file.write(item)
elif member.isSequence:
item = """
for (%(type)s::const_iterator iter = %(membername)s.begin();
iter != %(membername)s.end(); ++iter) {
node_c = node_p->append_child("%(elementname)s");
node_c.text().set(*iter);
}
""" % {'type': cpptype,
'membername': member.membername,
'elementname': member.elementname }
file.write(item)
elif member.isComplex:
file.write(indent + "// Add complex node \n");
fmt = 'node_c = node_p->append_child("%s");\n'
file.write(indent + fmt % member.elementname)
fmt = '%s.Encode(&node_c); \n'
file.write(indent + fmt % (member.membername))
file.write('}\n')
def Generate(self, file, hdrname):
header = """
#include "%s"
#include <stdint.h>
#include <sstream>
#include <boost/algorithm/string/trim.hpp>
#include <pugixml/pugixml.hpp>
#include <time.h>
using namespace pugi;
using namespace std;
#include "base/compiler.h"
#if defined(__GNUC__) && (__GCC_HAS_PRAGMA > 0)
#pragma GCC diagnostic ignored "-Wunused-function"
#endif
namespace autogen {
static bool ParseInteger(const pugi::xml_node &node, int *valuep) {
char *endp;
*valuep = strtoul(node.child_value(), &endp, 10);
while (isspace(*endp)) endp++;
return endp[0] == '\\0';
}
static bool ParseUnsignedLong(const pugi::xml_node &node, uint64_t *valuep) {
char *endp;
*valuep = strtoull(node.child_value(), &endp, 10);
while (isspace(*endp)) endp++;
return endp[0] == '\\0';
}
static bool ParseBoolean(const pugi::xml_node &node, bool *valuep) {
if (strcmp(node.child_value(), "true") ==0)
*valuep = true;
else
*valuep = false;
return true;
}
static bool ParseDateTime(const pugi::xml_node &node, time_t *valuep) {
string value(node.child_value());
boost::trim(value);
struct tm tm;
char *endp;
memset(&tm, 0, sizeof(tm));
if (value.size() == 0) return true;
endp = strptime(value.c_str(), "%%FT%%T", &tm);
if (!endp) return false;
*valuep = timegm(&tm);
return true;
}
static bool ParseTime(const pugi::xml_node &node, time_t *valuep) {
string value(node.child_value());
boost::trim(value);
struct tm tm;
char *endp;
endp = strptime(value.c_str(), "%%T", &tm);
if (!endp) return false;
*valuep = timegm(&tm);
return true;
}
static std::string FormatDateTime(const time_t *valuep) {
struct tm tm;
char result[100];
gmtime_r(valuep, &tm);
strftime(result, sizeof(result), "%%FT%%T", &tm);
return std::string(result);
}
static std::string FormatTime(const time_t *valuep) {
struct tm tm;
char result[100];
gmtime_r(valuep, &tm);
strftime(result, sizeof(result), "%%T", &tm);
return std::string(result);
}
""" % hdrname
file.write(header)
for ctype in self._cTypeDict.values():
self.GenerateTypeParser(file, ctype)
file.write('} // namespace autogen\n')