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#include "ModuleCache.h"
#include "module.h"
#include "printutils.h"
#include "boosty.h"
#include "openscad.h"
#include <stdio.h>
#include <sstream>
#include <sys/stat.h>
ModuleCache *ModuleCache::inst = NULL;
Module *ModuleCache::evaluate(const std::string &filename)
{
Module *cached = NULL;
struct stat st;
memset(&st, 0, sizeof(struct stat));
stat(filename.c_str(), &st);
std::stringstream idstream;
idstream << std::hex << st.st_mtime << "." << st.st_size;
std::string cache_id = idstream.str();
if (this->entries.find(filename) != this->entries.end() &&
this->entries[filename].cache_id == cache_id) {
#ifdef DEBUG
PRINTB("Using cached library: %s (%s)", filename % cache_id);
#endif
PRINTB("%s", this->entries[filename].msg);
cached = &(*this->entries[filename].module);
}
if (cached) {
cached->handleDependencies();
return cached;
}
else {
if (this->entries.find(filename) != this->entries.end()) {
PRINTB("Recompiling cached library: %s (%s)", filename % cache_id);
}
else {
PRINTB("Compiling library '%s'.", filename);
}
}
FILE *fp = fopen(filename.c_str(), "rt");
if (!fp) {
fprintf(stderr, "WARNING: Can't open library file '%s'\n", filename.c_str());
return NULL;
}
std::stringstream text;
char buffer[513];
int ret;
while ((ret = fread(buffer, 1, 512, fp)) > 0) {
buffer[ret] = 0;
text << buffer;
}
fclose(fp);
print_messages_push();
cache_entry e = { NULL, cache_id, std::string("WARNING: Library `") + filename + "' tries to recursively use itself!" };
if (this->entries.find(filename) != this->entries.end())
delete this->entries[filename].module;
this->entries[filename] = e;
std::string pathname = boosty::stringy(fs::path(filename).parent_path());
Module *lib_mod = dynamic_cast<Module*>(parse(text.str().c_str(), pathname.c_str(), 0));
if (lib_mod) {
this->entries[filename].module = lib_mod;
this->entries[filename].msg = print_messages_stack.back();
} else {
this->entries.erase(filename);
}
print_messages_pop();
return lib_mod;
}
void ModuleCache::clear()
{
this->entries.clear();
}
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