static VSFileSystem::VSError getProgramSource(const std::string &path, std::vector<std::string> &lines, std::set<std::string> &processed_includes, char *buf, size_t buflen)
{
std::string dirname = path.substr(0,path.find_last_of('/'));
VSFileSystem::VSFile f;
VSFileSystem::VSError err = f.OpenReadOnly( path.c_str(), UnknownFile );
const char *include_directive = "#include \"";
const size_t include_directive_len = 10;
size_t lineno = 0;
if (err <= Ok) {
processed_includes.insert(path);
while (Ok == f.ReadLine(buf, buflen)) {
++lineno;
if (strncmp(buf, include_directive, include_directive_len) == 0) {
// Process include directives
char *eos = strchr(buf+include_directive_len, '\"');
if (eos != NULL) {
*eos = 0;
std::string includepath = dirname + "/" + std::string(buf+include_directive_len);
if (processed_includes.count(includepath) == 0) {
// Set up line numbers for include file
lines.push_back("#line 0\n");
VSFileSystem::VSError ierr = getProgramSource(includepath, lines, processed_includes, buf, buflen);
if (ierr > Ok) {
f.Close();
VSFileSystem::vs_fprintf(stderr, "ERROR: included from %s\n", path.c_str());
return ierr;
} else {
// Append a blank line to avoid issues and restore line numbers
lines.push_back("\n");
snprintf(buf, buflen, "#line %lu\n", lineno);
lines.push_back(buf);
}
} else {
// Insert blank line to keep line numbers consistent
lines.push_back("\n");
}
} else {
VSFileSystem::vs_fprintf(stderr, "WARNING: broken include directive at file %s, line %d - skipping\n",
path.c_str(), lineno);
}
} else {
// Append a line to the list
lines.push_back(buf);
}
}
f.Close();
} else {
VSFileSystem::vs_fprintf(stderr, "ERROR: at %s\n", path.c_str());
}
return err;
}
