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/**
* VOTEXPATCB.C -- (Private) Expat XML Parser callback methods.
*
* @file votExpatCB.c
* @author Mike Fitzpatrick and Eric Timmermann
* @date 8/03/09
*
* @brief (Private) Expat parser XML callback methods
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <expat.h>
#include <unistd.h>
#include <ctype.h>
#include "votParseP.h"
#include "votParse.h"
extern Stack *element_stack;
static void vot_compileTable (Element *tdata);
/**
* vot_startElement -- CB whenever a start tag is seen (private method)
*
* @brief CB whenever a start tag is seen (private method)
* @fn vot_startElement (void *user, const char *name, const char **atts)
*
* @param user User data (not used)
* @param name The name in the XML tag.
* @param atts An array of attributes.
* @return nothing
*/
void
vot_startElement (void *user, const char *name, const char **atts)
{
Element *me, *cur;
int att, type, cols, rows;
char name_str[SZ_ATTRNAME], value[SZ_ATTRNAME], tempstr[SZ_ATTRNAME];
memset (name_str, 0, SZ_ATTRNAME);
strncpy (name_str, name, (SZ_ATTRNAME - 1));
type = vot_eType (name_str);
/* Check or deprecated elements.
*/
if (type == TY_DEFINITIONS)
votEmsg ("<DEFINITIONS> element was deprecated in v1.1\n");
if (type == TY_COOSYS)
votEmsg ("<COOSYS> element was deprecated in v1.2\n");
if (type != -1) {
if ((me = vot_newElem (type)) == (Element *) NULL)
fprintf (stderr, "Cannot create new element for <%s>\n", name_str);
if (!vot_isEmpty (element_stack)) {
cur = votPeek (element_stack);
if (cur->child)
cur->last_child->next = me;
else
cur->child = me;
cur->last_child = me;
vot_setHandle (me);
/* Gets the attributes.
*/
for (att=0; atts[att]; att+=2)
vot_attrSet (me->attr, (char *)atts[att], (char *)atts[att+1]);
if (me->type == TY_TABLE) {
cols = rows = 0;
strcpy (tempstr, "NCOLS");
sprintf (value, "%i", cols);
vot_attrSet (me->attr, tempstr, value);
strcpy (tempstr, "NROWS");
sprintf (value, "%i", rows);
vot_attrSet (me->attr, tempstr, value);
}
me->parent = cur;
votPush (element_stack, me);
} else
fprintf (stderr, "ERROR: No Root node!\n");
}
}
/**
* vot_endElement -- CB whenever an end tag is seen (private method)
*
* @brief CB whenever an end tag is seen (private method)
* @fn vot_endElement (void *user, const char *name)
*
* @param user User data (not used)
* @param name The name in the XML tag
* @return nothing
*/
void
vot_endElement (void *user, const char *name)
{
static int cols = 0, rows = 0;
Element *cur, *parent;
int type;
char name_str[SZ_ATTRNAME];
char value[SZ_ATTRNAME];
char tempstr[SZ_ATTRNAME];
memset (value, 0, SZ_ATTRNAME);
memset (tempstr, 0, SZ_ATTRNAME);
memset (name_str, 0, SZ_ATTRNAME);
strncpy (name_str, name, (SZ_ATTRNAME - 1));
if ( (type = vot_eType (name_str)) != -1) {
/* BUILD TYPE */
if (element_stack->head) {
cur = votPop (element_stack);
if (!vot_isEmpty (element_stack)) {
parent = element_stack->head->element;
if (parent->type == TY_TABLE) {
if (cur->type == TY_FIELD) {
strcpy (tempstr, "NCOLS");
cols = (atoi (vot_attrGet (parent->attr, tempstr)) + 1);
sprintf (value, "%i", cols);
vot_attrSet (parent->attr, tempstr, value);
}
}
if (parent->type == TY_TABLEDATA) {
if (cur->type == TY_TR) {
strcpy (tempstr, "NROWS");
rows = atoi (vot_attrGet (parent->parent->parent->attr,
tempstr)) + 1;
sprintf (value, "%i", rows);
vot_attrSet (parent->parent->parent->attr,
tempstr, value);
}
}
if (cur->type == TY_TABLEDATA)
vot_compileTable (cur);
}
if (cur->type != type)
fprintf (stderr, "ERROR: Malformed XML!!!!!\n%s not matched.",
vot_elemName (cur));
} else
fprintf (stderr, "ERROR: No Root node!\n");
}
}
/**
* vot_charData -- Handle non-element character strings (private method)
*
* @brief Handle non-element character strings (private method)
* @fn vot_charData (void *user, const XML_Char *s, int len)
*
* @param user User data (not used)
* @param s content string
* @param len length of string
* @return nothing
*/
void
vot_charData (void *user, const XML_Char *s, int len)
{
Element *cur;
char *ip = (char *) s;
char *rstr;
int clen = 0;
cur = votPeek (element_stack);
clen = (cur->content ? strlen (cur->content) : 0);
#ifdef STRIP_NL
while (len && isspace (*ip)) /* Strip newlines from content. */
ip++, len--;
#endif
if (len > 0 && ip && *ip) {
if (cur->content == NULL) {
cur->content = (char *) calloc ((len + 2), sizeof (char));
} else {
if ((rstr = (char *) realloc (cur->content, (clen + len + 2)) ))
cur->content = rstr;
else
fprintf (stderr, "ERROR: Could not realloc charData space.\n");
}
strncat (cur->content, ip, len);
}
}
/**
* vot_startCData -- Handle the start of CDATA strings (private method)
*
* @brief Handle the start of CDATA strings (private method)
* @fn vot_startCData (void *user)
*
* @param user User data (not used)
* @return nothing
*/
void
vot_startCData (void *user)
{
Element *cur = votPeek (element_stack);
cur->isCData = 1;
}
/**
* vot_endCData -- Handle the end of CDATA strings (private method)
*
* @brief Handle the end of CDATA strings (private method)
* @fn vot_endCData (void *user)
*
* @param user User data (not used)
* @return nothing
*/
void
vot_endCData (void *user)
{
;
}
/****************************************************************************
* Private procedures.
****************************************************************************/
/**
* vot_compileTable -- Compile a table of strings for easy access
*
* @brief Compile a table of strings for easy access (private method)
* @fn vot_compileTable (Element *tdata)
*
* @param tdata TABLEDATA Element containing values to compile
* @return nothing
*/
static void
vot_compileTable (Element *tdata)
{
Element *r = NULL, *c = NULL;
handle_t r_h, c_h, tdata_h;
int cols, rows, ncells, i, j;
char **ip;
if (tdata->type != TY_TABLEDATA) {
votEmsg ("Arg must be a TABLEDATA element to compile.\n");
return;
}
tdata_h = vot_lookupHandle (tdata);
cols = vot_getNCols (tdata_h);
rows = vot_getNRows (tdata_h);
ncells = rows * cols;
if (ncells == 0) /* e.g. a metadata votable return */
return;
if (tdata->data)
free (tdata->data);
tdata->data = (char **) calloc (ncells, sizeof (char *));
ip = tdata->data;
r_h = vot_getTR (vot_lookupHandle (tdata));
r = vot_getElement (r_h);
c_h = vot_getTD (vot_lookupHandle (r));
c = vot_getElement (c_h);
for (i = 1 ; r; i++) {
for (j = 1; c; j++) {
*ip++ = c->content;
c = c->next;
}
r = r->next;
if (r)
c = r->child;
}
}
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