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#include "templateparser.h"
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include "configuration.h"
#include "debug.h"
#include "exception.h"
void TemplateParser::error(const char* fmt, ...)
{
va_list argp;
char *p;
va_start(argp, fmt);
vasprintf(&p, fmt, argp);
va_end(argp);
ERR_LOG(template, "Error in TemplateParser: %s\n", p);
throw Exception(std::string("Error in TemplateParser: ") + p);
free(p);
}
TemplateParser::TemplateParser(std::string templatefile)
{
state = UNDEFINED;
t = new Template();
current_macro = NULL;
file = templatefile;
DEBUG(template, "Using template file: %s\n", file.c_str());
fd = open(file.c_str(), O_RDONLY);
if(fd == -1) error("Could not open file %s", file.c_str());
}
TemplateParser::~TemplateParser()
{
if(fd != -1) close(fd);
delete t;
}
void TemplateParser::characterData(std::string &data)
{
}
void TemplateParser::startTag(std::string name, std::map< std::string, std::string> attributes)
{
if(name == "template") {
if(state != UNDEFINED) error("Template found not a root node.");
state = TEMPLATE;
assert(t);
t->attributes = attributes;
return;
}
if(name == "macro" || name == "header") {
if(state != TEMPLATE) error("macro found outside template.");
state = MACRO;
assert(t);
Macro m;
m.attributes = attributes;
m.isHeader = name == "header";
t->macros.push_back(m);
current_macro = &(t->macros.back());
return;
}
error("Unknown/illegal tag: %s", name.c_str());
}
void TemplateParser::endTag(std::string name)
{
if(name == "template") state = UNDEFINED;
if(name == "macro" || name == "header") {
current_macro = NULL;
state = TEMPLATE;
}
}
int TemplateParser::readData(char *data, size_t size)
{
if(fd == -1) {
ERR_LOG(template, "Invalid file descriptor.\n");
return 0;
}
ssize_t r = read(fd, data, size);
if(r == -1) {
ERR_LOG(template, "Could not read...%s\n", strerror(errno));
return 0;
}
return r;
}
void TemplateParser::parseError(const char *buf, size_t len, std::string error, int lineno)
{
fprintf(stderr, "TemplateParser[%s] error at line %d: %s\n",
file.c_str(), lineno, error.c_str());
fprintf(stderr, "\tBuffer %u bytes: [", len);
if(fwrite(buf, len, 1, stderr) != len) {}
fprintf(stderr, "]\n");
fflush(stderr);
char *slineno;
if(asprintf(&slineno, " at line %d\n", lineno) != -1) {
throw Exception(error + slineno);
free(slineno);
}
}
Template *TemplateParser::getTemplate()
{
return t;
}
#ifdef TEST_TEMPLATEPARSER
#define XMLFILE "/tmp/test_templateparser.xml"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
#include <memory.h>
static char xml[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<template name=\"testtemplate\" version=\"1.0\">\n"
" <macro name=\"mymacro\"/>\n"
" <header caption=\"mycaption\"/>\n"
"</template>"
;
static char xml_nontemplate[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<dims name=\"testtemplate\" version=\"1.0\">\n"
" <sometag/>\n"
" <someothertag/>\n"
"</dims>"
;
static char xml_fail[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<template name\"testtemplate\" version=\"1.0\">\n"
" <sometag/>\n"
" <someothertag/>\n"
"</template>"
;
int main()
{
FILE *fp = fopen(XMLFILE, "w");
if(!fp) {
printf("Could not write to %s\n", XMLFILE);
return 1;
}
fprintf(fp, xml);
fclose(fp);
{
TemplateParser parser(XMLFILE);
try {
parser.parse();
} catch(Exception &e) {
printf("Failed to parse: %s\n", e.what());
return 1;
}
}
fp = fopen(XMLFILE, "w");
if(!fp) {
printf("Could not write to %s\n", XMLFILE);
return 1;
}
fprintf(fp, xml_nontemplate);
fclose(fp);
{
TemplateParser parser(XMLFILE);
try {
parser.parse();
} catch(Exception &e) {
printf("Failed to parse: %s\n", e.what());
goto onandon;
}
return 1;
}
onandon:
fp = fopen(XMLFILE, "w");
if(!fp) {
printf("Could not write to %s\n", XMLFILE);
return 1;
}
fprintf(fp, xml_fail);
fclose(fp);
{
TemplateParser parser(XMLFILE);
try {
parser.parse();
} catch(Exception &e) {
printf("Failed to parse: %s\n", e.what());
goto yetonandon;
}
return 1;
}
yetonandon:
unlink(XMLFILE);
return 0;
}
#endif
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