void
do_cqi_cqp_drop_subcorpus(void)
{
char *subcorpus;
CorpusList *cl;
char *c, *sc;
subcorpus = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CQP_DROP_SUBCORPUS('%s')\n", subcorpus);
/* make sure it is a subcorpus, not a root corpus */
if (!split_subcorpus_spec(subcorpus, &c, &sc))
cqi_command(cqi_errno);
else if (sc == NULL) {
free(c);
cqi_command(CQI_ERROR_SYNTAX_ERROR);
}
else {
free(c); free(sc);
cl = cqi_find_corpus(subcorpus);
if (cl == NULL)
cqi_command(cqi_errno);
else {
dropcorpus(cl);
cqi_command(CQI_STATUS_OK);
}
}
free(subcorpus);
}
void
do_cqi_cqp_query(void)
{
char *child, *mother, *query, *c, *sc;
mother = cqi_read_string();
child = cqi_read_string();
query = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CQP_QUERY('%s', '%s', '%s')\n", mother, child, query);
if (!split_subcorpus_spec(mother, &c, &sc)) {
cqi_command(cqi_errno);
}
else {
char *cqp_query;
int len = strlen(child) + strlen(query) + 10;
cqp_query = (char *) cl_malloc(len);
if (!check_subcorpus_name(child) || !cqi_activate_corpus(mother)) {
cqi_command(cqi_errno);
}
else {
query_lock = floor(1e9 * cl_runif()) + 1; /* activate query lock mode with random key */
Rprintf("CQPSERVER: query_lock = %d\n", query_lock);
if (query_has_semicolon(query))
sprintf(cqp_query, "%s = %s", child, query);
else
sprintf(cqp_query, "%s = %s;", child, query);
if (!cqp_parse_string(cqp_query))
cqi_command(CQI_CQP_ERROR_GENERAL); /* should be changed to detailed error messages */
else {
char *full_child;
CorpusList *childcl;
full_child = combine_subcorpus_spec(c, child); /* c is the 'physical' part of the mother corpus */
childcl = cqi_find_corpus(full_child);
if ((childcl) == NULL)
cqi_command(CQI_CQP_ERROR_GENERAL);
else {
if (server_log) {
Rprintf("'%s' ran the following query on %s\n", user, mother);
Rprintf("\t%s\n", cqp_query);
Rprintf("and got %d matches.\n", childcl->size);
}
cqi_command(CQI_STATUS_OK);
}
free(full_child);
}
query_lock = 0; /* deactivate query lock mode */
}
free(cqp_query);
}
free(c);
free(sc);
}
void
do_cqi_cqp_subcorpus_has_field(void)
{
char *subcorpus;
CorpusList *cl;
cqi_byte field;
char *fieldname;
int field_ok = 1; /* field valid? */
subcorpus = cqi_read_string();
field = cqi_read_byte();
fieldname = cqi_field_name(field);
if (fieldname == NULL) {
fieldname = "<invalid field>";
field_ok = 0;
}
if (server_debug)
Rprintf( "CQi: CQI_CQP_SUBCORPUS_HAS_FIELD('%s', %s)\n",
subcorpus, fieldname);
cl = cqi_find_corpus(subcorpus);
if (cl == NULL)
cqi_command(cqi_errno);
else if (!field_ok)
cqi_command(CQI_CQP_ERROR_INVALID_FIELD);
else {
switch (field) {
case CQI_CONST_FIELD_MATCH:
cqi_data_bool(CQI_CONST_YES);
break;
case CQI_CONST_FIELD_MATCHEND:
cqi_data_bool(CQI_CONST_YES);
break;
case CQI_CONST_FIELD_TARGET:
if (cl->targets == NULL)
cqi_data_bool(CQI_CONST_NO);
else
cqi_data_bool(CQI_CONST_YES);
break;
case CQI_CONST_FIELD_KEYWORD:
if (cl->keywords == NULL)
cqi_data_bool(CQI_CONST_NO);
else
cqi_data_bool(CQI_CONST_YES);
break;
default:
cqiserver_internal_error("do_cqi_cqp_subcorpus_has_field", "Can't identify requested field.");
}
cqi_flush();
}
free(subcorpus);
}
void
do_cqi_cl_cpos2str(void)
{
int *cposlist;
int len, i;
char *a, *str;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&cposlist);
if (server_debug) {
fprintf(stderr, "CQi: CQI_CL_CPOS2STR('%s', [", a);
for (i=0; i<len; i++)
fprintf(stderr, "%d ", cposlist[i]);
fprintf(stderr, "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_STRING_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_STRING_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
str = cl_cpos2str(attribute, cposlist[i]);
cqi_send_string(str); /* sends "" if str == NULL (cpos out of range) */
}
}
cqi_flush();
if (cposlist != NULL)
free(cposlist); /* don't forget to free allocated memory */
free(a);
}
void
do_cqi_cl_regex2id(void)
{
int *idlist;
int len;
char *a, *regex;
Attribute *attribute;
a = cqi_read_string();
regex = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CL_REGEX2ID('%s', '%s')\n", a, regex);
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
idlist = cl_regex2id(attribute, regex, 0, &len);
if (idlist == NULL) {
if (cderrno != CDA_OK)
send_cl_error();
else
cqi_data_int_list(NULL, 0); /* no matches -> zero size list */
}
else {
cqi_data_int_list(idlist, len);
free(idlist);
}
}
free(regex);
free(a); /* don't forget to free allocated space */
}
void
do_cqi_corpus_attributes(int type)
{
char *c, *typename;
CorpusList *cl;
c = cqi_read_string();
if (server_debug) {
switch (type) {
case ATT_POS:
typename = "POSITIONAL";
break;
case ATT_STRUC:
typename = "STRUCTURAL";
break;
case ATT_ALIGN:
typename = "ALIGNMENT";
break;
default:
cqi_general_error("INTERNAL ERROR: do_cqi_corpus_attributes(): unknown attribute type");
return;
}
Rprintf( "CQi: CQI_CORPUS_%s_ATTRIBUTES('%s')\n", typename, c);
}
cl = findcorpus(c, SYSTEM, 0);
if (cl == NULL || !access_corpus(cl)) {
cqi_command(CQI_CQP_ERROR_NO_SUCH_CORPUS);
}
else {
send_cqi_corpus_attributes(cl->corpus, type);
}
free(c);
}
void
do_cqi_cl_lexicon_size(void)
{
char *a;
Attribute *attribute;
int size;
a = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CL_LEXICON_SIZE('%s')\n", a);
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute != NULL) {
size = cl_max_id(attribute);
if (size < 0) {
send_cl_error();
}
else {
cqi_data_int(size);
}
}
else {
cqi_command(cqi_errno); /* cqi_errno set by lookup() */
}
free(a);
}
void
do_cqi_cqp_list_subcorpora(void)
{
char *corpus;
CorpusList *cl, *mother;
int n = 0;
corpus = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CQP_LIST_SUBCORPORA(%s)\n", corpus);
mother = cqi_find_corpus(corpus);
if (!check_corpus_name(corpus) || mother == NULL)
cqi_command(cqi_errno);
else {
/* ugly, but it's easiest ... first count corpora, then return names one by one */
for (cl = FirstCorpusFromList(); cl != NULL; cl = NextCorpusFromList(cl)) {
if (cl->type == SUB && cl->corpus == mother->corpus)
n++;
}
cqi_send_word(CQI_DATA_STRING_LIST);
cqi_send_int(n);
for (cl = FirstCorpusFromList(); cl != NULL; cl = NextCorpusFromList(cl)) {
if (cl->type == SUB && cl->corpus == mother->corpus)
cqi_send_string(cl->name);
}
cqi_flush();
}
free(corpus);
}
void
do_cqi_cl_struc2str(void)
{
int *struclist;
int len, i;
char *a, *str;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&struclist);
if (server_debug) {
Rprintf( "CQi: CQI_CL_STRUC2STR('%s', [", a);
for (i=0; i<len; i++)
Rprintf( "%d ", struclist[i]);
Rprintf( "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_STRUC);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_STRING_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_STRING_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
str = cl_struc2str(attribute, struclist[i]);
cqi_send_string(str); /* sends "" if str == NULL (wrong alignment number) */
}
}
cqi_flush();
if (struclist != NULL)
free(struclist); /* don't forget to free allocated memory */
free(a);
}
void
do_cqi_cl_idlist2cpos(void)
{
int *idlist, *cposlist;
int i, len, cposlen;
char *a;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&idlist);
if (server_debug) {
Rprintf( "CQi: CQI_CL_IDLIST2CPOS('%s', [", a);
for (i=0; i<len; i++)
Rprintf( "%d ", idlist[i]);
Rprintf( "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
cposlist = cl_idlist2cpos(attribute, idlist, len, 1, &cposlen);
if (cposlist == NULL)
send_cl_error();
else {
cqi_data_int_list(cposlist, cposlen);
free(cposlist);
}
}
cqi_flush();
if (idlist != NULL)
free(idlist); /* don't forget to free allocated memory */
free(a);
}
void
do_cqi_cl_id2cpos(void)
{
int *cposlist;
int len, id;
char *a;
Attribute *attribute;
a = cqi_read_string();
id = cqi_read_int();
if (server_debug)
Rprintf( "CQi: CQI_CL_ID2CPOS('%s', %d)\n", a, id);
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
cposlist = cl_id2cpos(attribute, id, &len);
if (cposlist == NULL)
send_cl_error();
else {
cqi_data_int_list(cposlist, len);
free(cposlist);
}
}
free(a); /* don't forget to free allocated space */
}
void
do_cqi_cl_attribute_size(void)
{
char *a;
Attribute *attribute;
int size;
a = cqi_read_string(); /* need to try all possible attribute types */
if (server_debug)
Rprintf( "CQi: CQI_CL_ATTRIBUTE_SIZE('%s')\n", a);
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute != NULL) {
size = cl_max_cpos(attribute);
if (size < 0) {
send_cl_error();
}
else {
cqi_data_int(size);
}
}
else {
attribute = cqi_lookup_attribute(a, ATT_STRUC);
if (attribute != NULL) {
size = cl_max_struc(attribute);
if (size < 0) {
/* send_cl_error(); */
/* current version of CL considers 0 regions a data access error condition, but we want to allow that */
cqi_data_int(0);
}
else {
cqi_data_int(size);
}
}
else {
attribute = cqi_lookup_attribute(a, ATT_ALIGN);
if (attribute != NULL) {
size = cl_max_alg(attribute);
if (size < 0) {
send_cl_error();
}
else {
cqi_data_int(size);
}
}
else {
cqi_command(cqi_errno); /* return errno from the last lookup */
}
}
}
free(a);
}
void
do_cqi_cqp_subcorpus_size(void)
{
char *subcorpus;
CorpusList *cl;
subcorpus = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CQP_SUBCORPUS_SIZE('%s')\n", subcorpus);
cl = cqi_find_corpus(subcorpus);
if (cl == NULL)
cqi_command(cqi_errno);
else
cqi_data_int(cl->size);
free(subcorpus);
}
void
do_cqi_corpus_structural_attribute_has_values(void) {
char *a;
Attribute *attribute;
a = cqi_read_string(); /* need to try all possible attribute types */
if (server_debug)
Rprintf( "CQi: CQI_CORPUS_STRUCTURAL_ATTRIBUTE_HAS_VALUES('%s')\n", a);
attribute = cqi_lookup_attribute(a, ATT_STRUC);
if (attribute != NULL) {
cqi_data_bool(cl_struc_values(attribute));
}
else {
cqi_command(cqi_errno);
}
free(a);
}
void
do_cqi_corpus_full_name(void)
{
char *c;
CorpusList *cl;
c = cqi_read_string();
if (server_debug)
Rprintf( "CQi: CQI_CORPUS_FULL_NAME('%s')\n", c);
cl = findcorpus(c, SYSTEM, 0);
if (cl == NULL || !access_corpus(cl)) {
cqi_command(CQI_CQP_ERROR_NO_SUCH_CORPUS);
}
else {
cqi_data_string(cl->corpus->name);
}
free(c);
}
void
do_cqi_cl_cpos2rbound(void)
{
int *cposlist;
int len, i, struc, lb, rb;
char *a;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&cposlist);
if (server_debug) {
Rprintf( "CQi: CQI_CL_CPOS2RBOUND('%s', [", a);
for (i=0; i<len; i++)
Rprintf( "%d ", cposlist[i]);
Rprintf( "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_STRUC);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_INT_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_INT_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
struc = cl_cpos2struc(attribute, cposlist[i]);
if (struc < 0) {
cqi_send_int(-1); /* return -1 if cpos is not in region */
}
else {
if (cl_struc2cpos(attribute, struc, &lb, &rb))
cqi_send_int(rb);
else
cqi_send_int(-1); /* cannot return error within list, so send -1 */
}
}
}
cqi_flush();
cl_free(cposlist); /* don't forget to free allocated memory */
free(a);
}
/**
* Sends the current CL error value to the client.
*
* This function takes the current contents of of the CL library's global
* cl_errno error value and sends it to the client.
*
* It takes the CL error consant and translates it into the corresponding
* CQI_CL_ERROR_* constant.
*
* NB: This function shuts down the server with an error condition if cl_errno
* does not actually contain an error condition.
*
* @see cl_errno
*/
void
send_cl_error(void)
{
int cmd;
switch (cl_errno) {
case CDA_EATTTYPE:
cmd = CQI_CL_ERROR_WRONG_ATTRIBUTE_TYPE;
break;
case CDA_EIDORNG:
case CDA_EIDXORNG:
case CDA_EPOSORNG:
cmd = CQI_CL_ERROR_OUT_OF_RANGE;
break;
case CDA_EPATTERN:
case CDA_EBADREGEX:
cmd = CQI_CL_ERROR_REGEX;
break;
case CDA_ENODATA:
cmd = CQI_CL_ERROR_CORPUS_ACCESS;
break;
case CDA_ENOMEM:
cmd = CQI_CL_ERROR_OUT_OF_MEMORY;
break;
case CDA_EOTHER:
case CDA_ENYI:
cmd = CQI_CL_ERROR_INTERNAL;
break;
case CDA_OK:
Rprintf( "CQPserver: send_cl_error() called with cderrno == CDA_OK\n");
rcqp_receive_error(1);
default:
Rprintf( "CQPserver: send_cl_error() unknown value in cderrno\n");
rcqp_receive_error(1);
}
if (server_debug)
Rprintf( "CQi: CL error, returning 0x%04X\n", cmd);
cqi_command(cmd);
return;
}
void
do_cqi_cl_alg2cpos(void)
{
int alg, s1, s2, t1, t2;
char *a;
Attribute *attribute;
a = cqi_read_string();
alg = cqi_read_int();
if (server_debug)
Rprintf( "CQi: CQI_CL_ALG2CPOS('%s', %d)\n", a, alg);
attribute = cqi_lookup_attribute(a, ATT_ALIGN);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
if (cl_alg2cpos(attribute, alg, &s1, &s2, &t1, &t2))
cqi_data_int_int_int_int(s1, s2, t1, t2);
else
send_cl_error();
}
free(a); /* don't forget to free allocated space */
}
void
do_cqi_cl_struc2cpos(void)
{
int struc, start, end;
char *a;
Attribute *attribute;
a = cqi_read_string();
struc = cqi_read_int();
if (server_debug)
Rprintf( "CQi: CQI_CL_STRUC2CPOS('%s', %d)\n", a, struc);
attribute = cqi_lookup_attribute(a, ATT_STRUC);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
if (cl_struc2cpos(attribute, struc, &start, &end))
cqi_data_int_int(start, end);
else
send_cl_error();
}
free(a); /* don't forget to free allocated space */
}
void
do_cqi_cl_cpos2alg(void)
{
int *cposlist;
int len, i, alg;
char *a;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&cposlist);
if (server_debug) {
Rprintf( "CQi: CQI_CL_CPOS2ALG('%s', [", a);
for (i=0; i<len; i++)
Rprintf( "%d ", cposlist[i]);
Rprintf( "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_ALIGN);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_INT_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_INT_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
alg = cl_cpos2alg(attribute, cposlist[i]);
if (alg < 0)
alg = -1; /* return -1 if cpos is out of range */
cqi_send_int(alg);
}
}
cqi_flush();
if (cposlist != NULL)
free(cposlist); /* don't forget to free allocated memory */
free(a);
}
void
do_cqi_cl_id2freq(void)
{
int *idlist;
int len, i, f;
char *a;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&idlist);
if (server_debug) {
Rprintf( "CQi: CQI_CL_ID2FREQ('%s', [", a);
for (i=0; i<len; i++)
Rprintf( "%d ", idlist[i]);
Rprintf( "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_INT_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_INT_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
f = cl_id2freq(attribute, idlist[i]);
if (f < 0)
f = 0; /* return 0 if ID is out of range */
cqi_send_int(f);
}
}
cqi_flush();
if (idlist != NULL)
free(idlist); /* don't forget to free allocated memory */
free(a);
}
/* one might wish to add extensive error checking to all the CL functions,
but that will need a LOT of code! */
void
do_cqi_cl_str2id(void)
{
char **strlist;
int len, i, id;
char *a;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_string_list(&strlist);
if (server_debug) {
Rprintf( "CQi: CQI_CL_STR2ID('%s', [", a);
for (i=0; i<len; i++)
Rprintf( "'%s' ", strlist[i]);
Rprintf( "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_POS);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_INT_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_INT_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
id = cl_str2id(attribute, strlist[i]);
if (id < 0)
id = -1; /* -1 => string not found in lexicon */
cqi_send_int(id);
}
}
cqi_flush();
if (strlist != NULL)
free(strlist); /* don't forget to free allocated memory */
free(a);
}
void
do_cqi_cl_cpos2struc(void)
{
int *cposlist;
int len, i, struc;
char *a;
Attribute *attribute;
a = cqi_read_string();
len = cqi_read_int_list(&cposlist);
if (server_debug) {
fprintf(stderr, "CQi: CQI_CL_CPOS2STRUC('%s', [", a);
for (i=0; i<len; i++)
fprintf(stderr, "%d ", cposlist[i]);
fprintf(stderr, "])\n");
}
attribute = cqi_lookup_attribute(a, ATT_STRUC);
if (attribute == NULL) {
cqi_command(cqi_errno);
}
else {
/* we assemble the CQI_DATA_INT_LIST() return command by hand,
so we don't have to allocate a temporary list */
cqi_send_word(CQI_DATA_INT_LIST);
cqi_send_int(len); /* list size */
for (i=0; i<len; i++) {
struc = cl_cpos2struc(attribute, cposlist[i]);
if (struc < 0)
struc = -1; /* return -1 if cpos is out of range */
cqi_send_int(struc);
}
}
cqi_flush();
cl_free(cposlist); /* don't forget to free allocated memory */
free(a);
}
void
do_cqi_cqp_dump_subcorpus(void)
{
char *subcorpus;
CorpusList *cl;
cqi_byte field;
int i, first, last, size;
char *fieldname;
int field_ok = 1; /* field valid? */
subcorpus = cqi_read_string();
field = cqi_read_byte();
first = cqi_read_int();
last = cqi_read_int();
fieldname = cqi_field_name(field);
if (fieldname == NULL) {
fieldname = "<invalid field>";
field_ok = 0;
}
if (server_debug)
Rprintf( "CQi: CQI_CQP_DUMP_SUBCORPUS('%s', %s, %d, %d)\n",
subcorpus, fieldname, first, last);
cl = cqi_find_corpus(subcorpus);
if (cl == NULL)
cqi_command(cqi_errno);
else if (!field_ok)
cqi_command(CQI_CQP_ERROR_INVALID_FIELD);
else if ((last < first) || (first < 0) || (last >= cl->size))
cqi_command(CQI_CQP_ERROR_OUT_OF_RANGE);
else {
cqi_send_word(CQI_DATA_INT_LIST); /* assemble by hand, so we don't have to allocate a temporary list */
size = last - first + 1;
cqi_send_int(size);
switch (field) {
case CQI_CONST_FIELD_MATCH:
for (i=first; i<=last; i++)
cqi_send_int(cl->range[i].start);
break;
case CQI_CONST_FIELD_MATCHEND:
for (i=first; i<=last; i++)
cqi_send_int(cl->range[i].end);
break;
case CQI_CONST_FIELD_TARGET:
if (cl->targets == NULL)
do_cqi_send_minus_one_list(size);
else
for (i=first; i<=last; i++)
cqi_send_int(cl->targets[i]);
break;
case CQI_CONST_FIELD_KEYWORD:
if (cl->keywords == NULL)
do_cqi_send_minus_one_list(size);
else
for (i=first; i<=last; i++)
cqi_send_int(cl->keywords[i]);
break;
default:
cqiserver_internal_error("do_cqi_cqp_dump_subcorpus", "No handler for requested field.");
}
cqi_flush();
}
free(subcorpus);
}
void
do_cqi_cqp_fdist_2(void)
{
char *subcorpus;
CorpusList *cl;
int cutoff;
cqi_byte field1, field2;
char *att1, *att2;
Group *table;
int i, size;
char *fieldname1, *fieldname2;
FieldType fieldtype1 = NoField, fieldtype2 = NoField;
int fields_ok = 1; /* (both) fields valid? */
subcorpus = cqi_read_string();
cutoff = cqi_read_int();
field1 = cqi_read_byte();
att1 = cqi_read_string();
field2 = cqi_read_byte();
att2 = cqi_read_string();
/* not exactly the fastest way to do it ... */
fieldname1 = cqi_field_name(field1);
if (fieldname1 == NULL) {
fieldname1 = "<invalid field>";
fields_ok = 0;
}
else {
fieldtype1 = field_name_to_type(fieldname1);
}
fieldname2 = cqi_field_name(field2);
if (fieldname2 == NULL) {
fieldname2 = "<invalid field>";
fields_ok = 0;
}
else {
fieldtype2 = field_name_to_type(fieldname2);
}
if (server_debug)
Rprintf( "CQi: CQI_CQP_FDIST_2('%s', %d, %s, %s, %s, %s)\n",
subcorpus, cutoff, fieldname1, att1, fieldname2, att2);
cl = cqi_find_corpus(subcorpus);
if (cl == NULL)
cqi_command(cqi_errno);
else if (!fields_ok)
cqi_command(CQI_CQP_ERROR_INVALID_FIELD);
else {
/* compute_grouping() returns tokens with f > cutoff, but CQi specifies f >= cutoff */
cutoff = (cutoff > 0) ? cutoff - 1 : 0;
table = compute_grouping(cl, fieldtype1, 0, att1, fieldtype2, 0, att2, cutoff);
if (table == NULL) {
cqi_command(CQI_CQP_ERROR_GENERAL);
}
else {
size = table->nr_cells;
cqi_send_word(CQI_DATA_INT_TABLE); /* return table with 3 columns & <size> rows */
cqi_send_int(size);
cqi_send_int(3);
for (i=0; i < size; i++) {
cqi_send_int(table->count_cells[i].s);
cqi_send_int(table->count_cells[i].t);
cqi_send_int(table->count_cells[i].freq);
}
cqi_flush();
free_group(&table);
}
}
cl_free(subcorpus);
cl_free(att1);
cl_free(att2);
}
/**
*
* The CQP server's command interpreter loop.
*
* The loops starts running when this function is called, and when the
* exit command is reveived (CQI_CTRL_BYE)
* (returns on exit)
*
*/
void
interpreter(void)
{
int cmd;
int cmd_group;
while (42) {
cmd = cqi_read_command();
cmd_group = cmd >> 8;
switch (cmd_group) {
/* GROUP CQI_CTRL_* */
case CQI_CTRL:
switch (cmd) {
case CQI_CTRL_CONNECT:
cqiserver_wrong_command_error(cmd);
case CQI_CTRL_BYE:
if (server_debug)
Rprintf( "CQi: CQI_CTRL_BYE()\n");
cqi_command(CQI_STATUS_BYE_OK);
return; /* exit CQi command interpreter */
case CQI_CTRL_USER_ABORT:
if (server_debug)
Rprintf( "CQi: CQI_CTRL_ABORT signal ... ignored\n");
break;
case CQI_CTRL_PING:
if (server_debug)
Rprintf( "CQi: CQI_CTRL_PING()\n");
cqi_command(CQI_STATUS_PING_OK);
break;
case CQI_CTRL_LAST_GENERAL_ERROR:
if (server_debug)
Rprintf( "CQi: CQI_CTRL_LAST_GENERAL_ERROR() => '%s'", cqi_error_string);
cqi_data_string(cqi_error_string);
break;
default:
cqiserver_unknown_command_error(cmd);
}
break;
/* GROUP CQI_ASK_FEATURE_* */
case CQI_ASK_FEATURE:
switch (cmd) {
case CQI_ASK_FEATURE_CQI_1_0:
if (server_debug)
Rprintf( "CQi: CQI_ASK_FEATURE_CQI_1_0 ... CQi v1.0 ok\n");
cqi_data_bool(CQI_CONST_YES);
break;
case CQI_ASK_FEATURE_CL_2_3:
if (server_debug)
Rprintf( "CQi: CQI_ASK_FEATURE_CL_2_3 ... CL v2.3 ok\n");
cqi_data_bool(CQI_CONST_YES);
break;
case CQI_ASK_FEATURE_CQP_2_3:
if (server_debug)
Rprintf( "CQi: CQI_ASK_FEATURE_CQP_2_3 ... CQP v2.3 ok\n");
cqi_data_bool(CQI_CONST_YES);
break;
default:
if (server_debug)
Rprintf( "CQi: CQI_ASK_FEATURE_* ... <unknown feature> not supported\n");
cqi_data_bool(CQI_CONST_NO);
}
break;
/* GROUP CQI_CORPUS_* */
case CQI_CORPUS:
switch (cmd) {
case CQI_CORPUS_LIST_CORPORA:
do_cqi_corpus_list_corpora();
break;
case CQI_CORPUS_CHARSET:
do_cqi_corpus_charset();
break;
case CQI_CORPUS_PROPERTIES:
do_cqi_corpus_properties();
break;
case CQI_CORPUS_POSITIONAL_ATTRIBUTES:
do_cqi_corpus_attributes(ATT_POS);
break;
case CQI_CORPUS_STRUCTURAL_ATTRIBUTES:
do_cqi_corpus_attributes(ATT_STRUC);
break;
case CQI_CORPUS_STRUCTURAL_ATTRIBUTE_HAS_VALUES:
do_cqi_corpus_structural_attribute_has_values();
break;
case CQI_CORPUS_ALIGNMENT_ATTRIBUTES:
do_cqi_corpus_attributes(ATT_ALIGN);
break;
case CQI_CORPUS_FULL_NAME:
do_cqi_corpus_full_name();
break;
default:
cqiserver_unknown_command_error(cmd);
}
break;
/* GROUP CQI_CL_* */
case CQI_CL:
switch (cmd) {
case CQI_CL_ATTRIBUTE_SIZE:
do_cqi_cl_attribute_size();
break;
case CQI_CL_LEXICON_SIZE:
do_cqi_cl_lexicon_size();
break;
case CQI_CL_DROP_ATTRIBUTE:
do_cqi_cl_drop_attribute();
break;
case CQI_CL_STR2ID:
do_cqi_cl_str2id();
break;
case CQI_CL_ID2STR:
do_cqi_cl_id2str();
break;
case CQI_CL_ID2FREQ:
do_cqi_cl_id2freq();
break;
case CQI_CL_CPOS2ID:
do_cqi_cl_cpos2id();
break;
case CQI_CL_CPOS2STR:
do_cqi_cl_cpos2str();
break;
case CQI_CL_CPOS2STRUC:
do_cqi_cl_cpos2struc();
break;
case CQI_CL_CPOS2LBOUND:
do_cqi_cl_cpos2lbound();
break;
case CQI_CL_CPOS2RBOUND:
do_cqi_cl_cpos2rbound();
break;
case CQI_CL_CPOS2ALG:
do_cqi_cl_cpos2alg();
break;
case CQI_CL_STRUC2STR:
do_cqi_cl_struc2str();
break;
case CQI_CL_ID2CPOS:
do_cqi_cl_id2cpos();
break;
case CQI_CL_IDLIST2CPOS:
do_cqi_cl_idlist2cpos();
break;
case CQI_CL_REGEX2ID:
do_cqi_cl_regex2id();
break;
case CQI_CL_STRUC2CPOS:
do_cqi_cl_struc2cpos();
break;
case CQI_CL_ALG2CPOS:
do_cqi_cl_alg2cpos();
break;
default:
cqiserver_unknown_command_error(cmd);
}
break;
/* GROUP CQI_CQP_* */
case CQI_CQP:
switch (cmd) {
case CQI_CQP_QUERY:
do_cqi_cqp_query();
break;
case CQI_CQP_LIST_SUBCORPORA:
do_cqi_cqp_list_subcorpora();
break;
case CQI_CQP_SUBCORPUS_SIZE:
do_cqi_cqp_subcorpus_size();
break;
case CQI_CQP_SUBCORPUS_HAS_FIELD:
do_cqi_cqp_subcorpus_has_field();
break;
case CQI_CQP_DUMP_SUBCORPUS:
do_cqi_cqp_dump_subcorpus();
break;
case CQI_CQP_DROP_SUBCORPUS:
do_cqi_cqp_drop_subcorpus();
break;
case CQI_CQP_FDIST_1:
do_cqi_cqp_fdist_1();
break;
case CQI_CQP_FDIST_2:
do_cqi_cqp_fdist_2();
break;
default:
cqiserver_unknown_command_error(cmd);
}
break;
default:
cqiserver_unknown_command_error(cmd);
} /* end outer switch */
} /* end while 42 */
}
/**
* Main function for the cqpserver app.
*/
int
main(int argc, char *argv[])
{
int cmd;
which_app = cqpserver;
/* TODO: shouldn't these come AFTER initialize_cqp(), as that function may overwrite these values with defaults?
* or maybe I've missed some subtlety here....*/
silent = 1;
paging = autoshow = auto_save = 0;
if (!initialize_cqp(argc, argv)) {
Rprintf( "CQPserver: ERROR Couldn't initialise CQP engine.\n");
rcqp_receive_error(1);
}
cqiserver_welcome();
if (localhost) {
add_host_to_list("127.0.0.1"); /* in -L mode, connections from localhost are automatically accepted */
}
if (0 < accept_connection(server_port)) {
if (server_log)
Rprintf("CQPserver: Connected. Waiting for CONNECT request.\n");
}
else {
Rprintf( "CQPserver: ERROR Connection failed.\n");
rcqp_receive_error(1);
}
/* establish CQi connection: wait for CONNECT request */
cmd = cqi_read_command();
if (cmd != CQI_CTRL_CONNECT) {
if (server_log)
Rprintf("CQPserver: Connection refused.\n");
cqiserver_wrong_command_error(cmd);
}
user = cqi_read_string();
passwd = cqi_read_string();
if (server_log)
Rprintf("CQPserver: CONNECT user = '******' passwd = '%s' pid = %d\n", user, passwd, (int)getpid());
/* check password here (always required !!) */
if (!authenticate_user(user, passwd)) {
Rprintf("CQPserver: Wrong username or password. Connection refused.\n"); /* TODO shouldn't this be to stderr as it is not conditional on server_log? */
cqi_command(CQI_ERROR_CONNECT_REFUSED);
}
else {
cqi_command(CQI_STATUS_CONNECT_OK);
/* re-randomize for query lock key generation */
cl_randomize();
/* check which corpora the user is granted access to */
{
CorpusList *cl = FirstCorpusFromList();
while (cl != NULL) {
if (!check_grant(user, cl->name))
dropcorpus(cl);
cl = NextCorpusFromList(cl);
}
}
/* start command interpreter loop */
interpreter();
if (server_log)
Rprintf("CQPserver: User '%s' has logged off.\n", user);
}
/* connection terminated; clean up and exit */
Rprintf("CQPserver: Exit. (pid = %d)\n", (int)getpid());
/* TODO should we check cqp_error_status as in the main cqp app? */
return 0;
}