Commit d774e032 authored by Tomek Mrugalski's avatar Tomek Mrugalski 🛰

[5014] Reading from file implemented

parent 7df89021
......@@ -198,6 +198,25 @@ Parser6Context::scanStringEnd()
yy_delete_buffer(YY_CURRENT_BUFFER);
}
void
Parser6Context::scanFileBegin(FILE * f) {
loc.initialize(&file_);
yy_flex_debug = trace_scanning_;
YY_BUFFER_STATE buffer;
// See dhcp6_lexer.cc header for available definitions
buffer = parser6__create_buffer(f, 65536 /*buffer size*/);
if (!buffer) {
fatal("cannot scan file " + file_);
}
}
void
Parser6Context::scanFileEnd(FILE * f) {
fclose(f);
yy_delete_buffer(YY_CURRENT_BUFFER);
}
namespace {
/// To avoid unused function error
class Dummy {
......
......@@ -42,11 +42,74 @@ Parser6Context::parseString(const std::string& str)
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(BadValue, "Expected exactly one terminal Element, found "
isc_throw(BadValue, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
}
isc::data::ConstElementPtr
Parser6Context::parseFile(const std::string& filename) {
ifstream f;
f.open(filename);
if (!f.is_open()) {
isc_throw(BadValue, "Can't open file " << filename);
}
string_ = "";
std::string line;
while (!f.eof()) {
std::getline(f, line);
string_ = string_ + line;
}
f.close();
file_ = filename;
scanStringBegin();
isc::dhcp::Dhcp6Parser parser(*this);
// Uncomment this to get detailed parser logs.
// trace_parsing_ = true;
parser.set_debug_level(trace_parsing_);
int res = parser.parse();
if (res != 0) {
// @todo: handle exception here
}
scanStringEnd();
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(BadValue, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
#if 0
FILE* f = fopen(filename.c_str(), "r");
if (!f) {
isc_throw(BadValue, "Unable to open file " << filename);
}
file_ = filename;
scanFileBegin(f);
isc::dhcp::Dhcp6Parser parser(*this);
// Uncomment this to get detailed parser logs.
// trace_parsing_ = true;
parser.set_debug_level(trace_parsing_);
int res = parser.parse();
if (res != 0) {
// @todo: handle exception here
}
scanFileEnd(f);
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(BadValue, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
#endif
}
void
Parser6Context::error(const isc::dhcp::location& loc, const std::string& what)
{
......
......@@ -53,12 +53,17 @@ public:
/// @brief Method called after the last tokens are scanned from a string.
void scanStringEnd();
void scanFileBegin(FILE * f);
void scanFileEnd(FILE * f);
/// @brief Run the parser on the string specified.
///
/// @param str string to be written
/// @return true on success.
isc::data::ConstElementPtr parseString(const std::string& str);
isc::data::ConstElementPtr parseFile(const std::string& filename);
/// @brief The name of the file being parsed.
/// Used later to pass the file name to the location tracker.
std::string file_;
......
......@@ -164,4 +164,23 @@ TEST(ParserTest, multilineComments) {
testParser2(txt);
}
TEST(ParserTest, file) {
ElementPtr reference_json;
ConstElementPtr test_json;
std::string fname = "test.json";
EXPECT_NO_THROW(reference_json = Element::fromJSONFile(fname, true));
EXPECT_NO_THROW({
Parser6Context ctx;
test_json = ctx.parseFile(fname);
});
ASSERT_TRUE(reference_json);
ASSERT_TRUE(test_json);
compareJSON(reference_json, test_json);
}
};
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