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/*
* PDFlow -- pdfdoc.c
*
* Copyright (c) 2010 Alberto Cuda
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "fmt/file.h"
#include "pdfdoc.h"
#include "filters.h"
enum s_status pd_add_selection (struct v_selection *sel,
struct v_pref *pref)
{
struct v_selection scsel;
enum s_status res;
memset (&scsel, 0, sizeof (struct v_selection));
scsel.pref = pref;
res = S_CSC_OK;
if (res == S_CSC_OK)
res = flt_add_selection (&scsel);
if (res == S_CSC_OK)
res = xref_add_selection (&scsel);
if (res == S_CSC_OK)
res = cat_add_selection (&scsel);
if (res != S_CSC_OK) {
v_destroy_selection (&scsel);
return res;
}
*sel = scsel;
return S_CSC_OK;
}
enum s_status pd_init (struct pd_document **docp, struct ref_owner *p)
{
struct pd_document *doc;
doc = malloc (sizeof (struct pd_document));
if (doc == NULL)
return S_CSC_OUT_OF_MEMORY;
memset (doc, 0, sizeof (struct pd_document));
ref_init (&doc -> refs, "document", p);
*docp = doc;
return S_CSC_OK;
}
enum s_status pd_read (struct pd_document *doc, const char *fname)
{
struct obj eobj;
enum s_status res;
struct f_file *file;
res = f_open (fname, &file);
if (res != S_CSC_OK)
return res;
res = xref_create_db (&doc -> rdb, ref_rown (&doc -> refs));
if (res != S_CSC_OK) {
f_unref (file);
return res;
}
res = xref_init_db (doc -> rdb, file);
f_unref (file);
if (res != S_CSC_OK)
return res;
res = xref_dict_resolve (doc -> rdb, xref_get_trailer (doc -> rdb),
"Encrypt", OT_DICTIONARY, &eobj);
if (res != S_CSC_OK)
return res;
if (eobj.type != OT_NULL) {
obj_destroy (&eobj);
return s_make_indirect
(S_CSC_NOT_SUPPORTED,
"Encrypted documents not supported yet");
}
res = T_CALL (tri_init, &doc -> trailer, doc -> rdb, NULL,
xref_get_trailer (doc -> rdb),
ref_rown (&doc -> refs));
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
enum s_status pd_creat (struct pd_document *doc, const char *fname,
struct v_selection *sel)
{
struct f_file *file;
enum s_status res;
res = f_creat (fname, &file);
if (res != S_CSC_OK)
return res;
res = xref_create_db (&doc -> rdb, ref_rown (&doc -> refs));
if (res != S_CSC_OK) {
f_unref (file);
return res;
}
res = xref_scratch_db (doc -> rdb, sel, file);
f_unref (file);
if (res != S_CSC_OK)
return res;
res = T_CALL (tri_new, &doc -> trailer, doc -> rdb,
ref_rown (&doc -> refs));
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
enum s_status pd_scratch (struct pd_document *doc, struct v_selection *sel)
{
enum s_status res;
res = xref_scratch_db (doc -> rdb, sel, NULL);
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
enum s_status pd_sync_start (struct pd_document *doc, struct v_selection *sel)
{
enum s_status res;
res = tri_touch (doc -> trailer);
if (res != S_CSC_OK)
return res;
res = xref_sync_start (doc -> rdb, sel);
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
enum s_status pd_sync_end (struct pd_document *doc, struct v_selection *sel)
{
enum s_status res;
struct obj obj;
res = tri_fix_and_sync (doc -> rdb, sel, &obj, doc -> trailer);
if (res != S_CSC_OK)
return res;
res = xref_sync_db (doc -> rdb, sel, &obj);
obj_destroy (&obj);
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
enum s_status pd_sync (struct pd_document *doc, struct v_selection *sel)
{
enum s_status res;
res = pd_sync_start (doc, sel);
if (res != S_CSC_OK)
return res;
res = pd_sync_end (doc, sel);
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
enum s_status pd_derive (struct pd_document *doc, struct pd_document *sdoc,
struct ob_bridge *ob)
{
enum s_status res;
res = tri_derive (doc -> trailer, sdoc -> trailer, ob);
if (res != S_CSC_OK)
return res;
return S_CSC_OK;
}
void pd_unref (struct pd_document *doc, struct ref_owner *p)
{
if (ref_down (&doc -> refs, p))
return;
if (doc -> rdb != NULL)
xref_unref_db (doc -> rdb, ref_rown (&doc -> refs));
if (doc -> trailer != NULL)
tri_unref (doc -> trailer, ref_rown (&doc -> refs));
ref_zero (&doc -> refs);
free (doc);
}
void pd_unlink (struct pd_document *doc, struct ref_owner *p)
{
xref_set_aborted (doc -> rdb);
pd_unref (doc, p);
}
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