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/* iksemel (XML parser for Jabber)
** Copyright (C) 2000-2003 Gurer Ozen
** This code is free software; you can redistribute it and/or
** modify it under the terms of GNU Lesser General Public License.
*/
#include "common.h"
#include "iksemel.h"
struct dom_data {
iks **iksptr;
iks *current;
size_t chunk_size;
};
static int
tagHook (struct dom_data *data, char *name, char **atts, int type)
{
iks *x;
if (IKS_OPEN == type || IKS_SINGLE == type) {
if (data->current) {
x = iks_insert (data->current, name);
} else {
ikstack *s;
s = iks_stack_new (data->chunk_size, data->chunk_size);
x = iks_new_within (name, s);
}
if (atts) {
int i=0;
while (atts[i]) {
iks_insert_attrib (x, atts[i], atts[i+1]);
i += 2;
}
}
data->current = x;
}
if (IKS_CLOSE == type || IKS_SINGLE == type) {
x = iks_parent (data->current);
if (iks_strcmp(iks_name(data->current), name) != 0)
return IKS_BADXML;
if (x)
data->current = x;
else {
*(data->iksptr) = data->current;
data->current = NULL;
}
}
return IKS_OK;
}
static int
cdataHook (struct dom_data *data, char *cdata, size_t len)
{
if (data->current) iks_insert_cdata (data->current, cdata, len);
return IKS_OK;
}
static void
deleteHook (struct dom_data *data)
{
if (data->current) iks_delete (data->current);
data->current = NULL;
}
iksparser *
iks_dom_new (iks **iksptr)
{
ikstack *s;
struct dom_data *data;
*iksptr = NULL;
s = iks_stack_new (DEFAULT_DOM_CHUNK_SIZE, 0);
if (!s) return NULL;
data = iks_stack_alloc (s, sizeof (struct dom_data));
data->iksptr = iksptr;
data->current = NULL;
data->chunk_size = DEFAULT_DOM_IKS_CHUNK_SIZE;
return iks_sax_extend (s, data, (iksTagHook *) tagHook, (iksCDataHook *) cdataHook, (iksDeleteHook *) deleteHook);
}
void
iks_set_size_hint (iksparser *prs, size_t approx_size)
{
size_t cs;
struct dom_data *data = iks_user_data (prs);
cs = approx_size / 10;
if (cs < DEFAULT_DOM_IKS_CHUNK_SIZE) cs = DEFAULT_DOM_IKS_CHUNK_SIZE;
data->chunk_size = cs;
}
iks *
iks_tree (const char *xml_str, size_t len, int *err)
{
iksparser *prs;
iks *x;
int e;
if (0 == len) len = strlen (xml_str);
prs = iks_dom_new (&x);
if (!prs) {
if (err) *err = IKS_NOMEM;
return NULL;
}
e = iks_parse (prs, xml_str, len, 1);
if (err) *err = e;
iks_parser_delete (prs);
return x;
}
int
iks_load (const char *fname, iks **xptr)
{
iksparser *prs;
char *buf;
FILE *f;
int len, done = 0;
int ret;
*xptr = NULL;
buf = iks_malloc (FILE_IO_BUF_SIZE);
if (!buf) return IKS_NOMEM;
ret = IKS_NOMEM;
prs = iks_dom_new (xptr);
if (prs) {
f = fopen (fname, "r");
if (f) {
while (0 == done) {
len = fread (buf, 1, FILE_IO_BUF_SIZE, f);
if (len < FILE_IO_BUF_SIZE) {
if (0 == feof (f)) {
ret = IKS_FILE_RWERR;
break;
}
if (0 == len) ret = IKS_OK;
done = 1;
}
if (len > 0) {
int e;
e = iks_parse (prs, buf, len, done);
if (IKS_OK != e) {
ret = e;
break;
}
if (done) ret = IKS_OK;
}
}
fclose (f);
} else {
if (ENOENT == errno) ret = IKS_FILE_NOFILE;
else ret = IKS_FILE_NOACCESS;
}
iks_parser_delete (prs);
}
iks_free (buf);
return ret;
}
int
iks_save (const char *fname, iks *x)
{
FILE *f;
char *data;
int ret;
ret = IKS_NOMEM;
data = iks_string (NULL, x);
if (data) {
ret = IKS_FILE_NOACCESS;
f = fopen (fname, "w");
if (f) {
ret = IKS_FILE_RWERR;
if (fputs (data, f) >= 0) ret = IKS_OK;
fclose (f);
}
iks_free (data);
}
return ret;
}
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