csdbparser::enResult csdbparser::file_sanity_check(const char *fn)
{
smartFILE fp;
tempbuf buf(20000);
int hdr_len=0;
std::string s;
// Does the file exist?
if (check_fileExists(fn) == false)
{
return resFILE_NOT_FOUND;
}
// Try to open the file for reading
fp = fopen(fn, "r");
if (fp == NULL)
{
return resFILE_ACCESS_ERR;
}
// Read out the first line i.e. the header
if (fgets(buf.get(), 20000, fp.get()) == NULL)
{
return resFILE_ACCESS_ERR;
}
chomp(buf.get());
s = static_cast<const char*>(buf.get());
hdr_len = strlen(buf.get());
// Header should be at least 19 bytes long and starts with "cscope "
if ((hdr_len<19)||(s.compare(0, strlen("cscope "), "cscope ") != 0))
{
return resUNRECOG_FORMAT;
}
// Compare the cscope version used to build the database
if (s.compare(7, strlen(CSDBP_SUPPORTED_VER), CSDBP_SUPPORTED_VER) != 0)
{
return resINCORRECT_VER;
}
// Compare the parameters used to build the database with the supported one
if (s.compare(hdr_len - 28, strlen(CSDBP_SUP_PARAM), CSDBP_SUP_PARAM) != 0)
if (s.compare(hdr_len - 14, strlen(CSDBP_SUP_PARAM2), CSDBP_SUP_PARAM2) != 0)
{
return resUNSUPPORTED_PARAM;
}
// Trailer offset should be a positive number, normally > 20
if (atol(s.substr(hdr_len - 10).c_str()) < 20)
{
return resUNRECOG_FORMAT;
}
// Header looks OK so far!
return resOK;
}
csdbparser::enResult csdbparser::file_sanity_check(const char *fn)
{
smartFILE fp;
tempbuf buf(20000);
unsigned int i;
std::string s;
bool chkok;
// Does the file exist?
if (check_fileExists(fn) == false) {return resFILE_NOT_FOUND;}
// Try to open the file for reading
fp = fopen(fn, "r");
if (fp == NULL) {return resFILE_ACCESS_ERR;}
// Read out the first line i.e. the header
if (fgets(buf.get(), 20000, fp.get()) == NULL) {return resFILE_ACCESS_ERR;}
chomp(buf.get());
s = static_cast<const char*>(buf.get());
csdbheader hdr;
hdr.set_header(s);
if (hdr.parse() == false)
{return resUNRECOG_FORMAT;}
// Compare the cscope version used to build the database
if (hdr.get_version() != CSDBP_SUPPORTED_VER_NUM)
{return resINCORRECT_VER;}
// Compare the parameters used to build the database with the supported one
// We must have "c", we don't mind "q" and we cannot have any other
chkok = false;
tVecStr vs = hdr.get_param_list();
for(i=0; i< vs.size(); i++)
{
if (vs[i].compare("c") == 0) chkok = true;
}
if (chkok == false) {return resUNSUPPORTED_PARAM;}
for(i=0; i< vs.size(); i++)
{
if ((vs[i].compare("c") != 0) &&
(vs[i].compare("q") != 0)) chkok = false;
}
if (chkok == false) {return resUNSUPPORTED_PARAM;}
// Trailer offset should be a positive number, normally > 20
if (hdr.get_trailer_start() < 20) {return resUNRECOG_FORMAT;}
// Header looks OK so far!
return resOK;
}
sqlquery::en_filereadstatus sqlquery::open_dbfile(tStr dbfn)
{
if (dbfn.empty()) return sqlfileOPENERROR;
smartFILE fp;
// Does the file exist?
if (check_fileExists(dbfn.c_str()) == false)
{
return sqlfileOPENERROR;
}
// Try to open the file for reading
fp = fopen(dbfn.c_str(), "r");
if (fp == NULL)
{
return sqlfileOPENERROR;
}
fp.close_file();
int rc = sqlite3_open_v2(dbfn.c_str(),
&m_db, SQLITE_OPEN_READONLY, NULL);
if ((rc != SQLITE_OK)||(m_db == NULL))
{
close_dbfile();
return sqlfileOPENERROR;
}
tempstmt stmt;
sqlite3_exec(m_db, /*"PRAGMA synchronous = OFF;"
"PRAGMA journal_mode = OFF;"
"PRAGMA locking_mode = EXCLUSIVE;"
"PRAGMA automatic_index = FALSE;"*/
"PRAGMA cache_size = 20000;", NULL, 0, NULL);
tStr majorver = read_configtbl("DB_MAJOR_VER", stmt.get());
tStr minorver = read_configtbl("DB_MINOR_VER", stmt.get());
if ((majorver.empty())||(minorver.empty()))
{
return sqlfileNOTCORRECTDB;
}
if (majorver.compare(tStr("0")) != 0) return sqlfileINCORRECTVER;
if (minorver.compare(tStr("1")) != 0) return sqlfileINCORRECTVER;
m_basepath = read_configtbl("DB_BASE_PATH", stmt.get());
if (m_basepath.empty())
{
return sqlfileNOTCORRECTDB;
}
rc = sqlite3_prepare_v2(m_db, SQL_AUTOCOMPLETE, strlen(SQL_AUTOCOMPLETE),
&(m_autocompstmt.m_stmt), NULL);
if (rc != SQLITE_OK)
{
return sqlfileNOTCORRECTDB;
}
return sqlfileOK;
}
