mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2025-02-23 13:17:14 +01:00
4a6bfc086c
Switched to POCO library for unified platform/library interface. Deprecated the external module API. It was creating more problems than solving. Removed most built-in libraries in favor of system libraries for easier maintenance. Cleaned and secured code with help from static analyzers.
331 lines
7.5 KiB
C
331 lines
7.5 KiB
C
/*
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* << Haru Free PDF Library >> -- hpdf_outline.c
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*
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* URL: http://libharu.org
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*
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* Copyright (c) 1999-2006 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp>
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* Copyright (c) 2007-2009 Antony Dovgal <tony@daylessday.org>
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation.
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* It is provided "as is" without express or implied warranty.
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*
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*/
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#include "hpdf_conf.h"
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#include "hpdf_utils.h"
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#include "hpdf_destination.h"
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#include "hpdf.h"
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#define HPDF_OUTLINE_CLOSED 0
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#define HPDF_OUTLINE_OPENED 1
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static HPDF_STATUS
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AddChild (HPDF_Outline parent,
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HPDF_Outline item);
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static HPDF_STATUS
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BeforeWrite (HPDF_Dict obj);
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static HPDF_UINT
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CountChild (HPDF_Outline outline);
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/*----------------------------------------------------------------------------*/
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/*----- HPDF_Outline ---------------------------------------------------------*/
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HPDF_Outline
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HPDF_OutlineRoot_New (HPDF_MMgr mmgr,
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HPDF_Xref xref)
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{
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HPDF_Outline outline;
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HPDF_STATUS ret = HPDF_OK;
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HPDF_Number open_flg;
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HPDF_PTRACE((" HPDF_OutlineRoot_New\n"));
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outline = HPDF_Dict_New (mmgr);
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if (!outline)
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return NULL;
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outline->before_write_fn = BeforeWrite;
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if (HPDF_Xref_Add (xref, outline) != HPDF_OK)
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return NULL;
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open_flg = HPDF_Number_New (mmgr, HPDF_OUTLINE_OPENED);
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if (!open_flg)
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return NULL;
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open_flg->header.obj_id |= HPDF_OTYPE_HIDDEN;
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ret += HPDF_Dict_Add (outline, "_OPENED", open_flg);
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ret += HPDF_Dict_AddName (outline, "Type", "Outlines");
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if (ret != HPDF_OK)
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return NULL;
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outline->header.obj_class |= HPDF_OSUBCLASS_OUTLINE;
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return outline;
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}
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HPDF_Outline
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HPDF_Outline_New (HPDF_MMgr mmgr,
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HPDF_Outline parent,
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const char *title,
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HPDF_Encoder encoder,
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HPDF_Xref xref)
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{
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HPDF_Outline outline;
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HPDF_String s;
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HPDF_STATUS ret = HPDF_OK;
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HPDF_Number open_flg;
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HPDF_PTRACE((" HPDF_Outline_New\n"));
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if (!mmgr || !parent || !xref)
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return NULL;
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outline = HPDF_Dict_New (mmgr);
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if (!outline)
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return NULL;
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outline->before_write_fn = BeforeWrite;
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if (HPDF_Xref_Add (xref, outline) != HPDF_OK)
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return NULL;
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s = HPDF_String_New (mmgr, title, encoder);
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if (!s)
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return NULL;
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else
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ret += HPDF_Dict_Add (outline, "Title", s);
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open_flg = HPDF_Number_New (mmgr, HPDF_OUTLINE_OPENED);
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if (!open_flg)
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return NULL;
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open_flg->header.obj_id |= HPDF_OTYPE_HIDDEN;
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ret += HPDF_Dict_Add (outline, "_OPENED", open_flg);
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ret += HPDF_Dict_AddName (outline, "Type", "Outlines");
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ret += AddChild (parent, outline);
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if (ret != HPDF_OK)
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return NULL;
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outline->header.obj_class |= HPDF_OSUBCLASS_OUTLINE;
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return outline;
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}
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static HPDF_STATUS
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AddChild (HPDF_Outline parent,
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HPDF_Outline item)
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{
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HPDF_Outline first = (HPDF_Outline)HPDF_Dict_GetItem (parent, "First",
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HPDF_OCLASS_DICT);
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HPDF_Outline last = (HPDF_Outline)HPDF_Dict_GetItem (parent, "Last",
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HPDF_OCLASS_DICT);
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HPDF_STATUS ret = 0;
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HPDF_PTRACE((" AddChild\n"));
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if (!first)
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ret += HPDF_Dict_Add (parent, "First", item);
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if (last) {
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ret += HPDF_Dict_Add (last, "Next", item);
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ret += HPDF_Dict_Add (item, "Prev", last);
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}
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ret += HPDF_Dict_Add (parent, "Last", item);
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ret += HPDF_Dict_Add (item, "Parent", parent);
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if (ret != HPDF_OK)
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return HPDF_Error_GetCode (item->error);
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return HPDF_OK;
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}
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HPDF_BOOL
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HPDF_Outline_GetOpened (HPDF_Outline outline)
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{
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HPDF_Number n = (HPDF_Number)HPDF_Dict_GetItem (outline, "_OPENED",
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HPDF_OCLASS_NUMBER);
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HPDF_PTRACE((" HPDF_Outline_GetOpened\n"));
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if (!n)
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return HPDF_FALSE;
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return (HPDF_BOOL)n->value;
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}
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HPDF_Outline
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HPDF_Outline_GetFirst (HPDF_Outline outline)
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{
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HPDF_PTRACE((" HPDF_Outline_GetFirst\n"));
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return (HPDF_Outline)HPDF_Dict_GetItem (outline, "First",
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HPDF_OCLASS_DICT);
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}
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HPDF_Outline
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HPDF_Outline_GetLast (HPDF_Outline outline)
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{
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HPDF_PTRACE((" HPDF_Outline_GetLast\n"));
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return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Last", HPDF_OCLASS_DICT);
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}
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HPDF_Outline
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HPDF_Outline_GetPrev (HPDF_Outline outline)
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{
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HPDF_PTRACE((" HPDF_Outline_GetPrev\n"));
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return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Prev", HPDF_OCLASS_DICT);
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}
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HPDF_Outline
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HPDF_Outline_GetNext (HPDF_Outline outline)
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{
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HPDF_PTRACE((" HPDF_Outline_GetNext\n"));
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return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Next", HPDF_OCLASS_DICT);
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}
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HPDF_Outline
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HPDF_Outline_GetParent (HPDF_Outline outline)
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{
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HPDF_PTRACE((" HPDF_Outline_GetParent\n"));
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return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Parent",
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HPDF_OCLASS_DICT);
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}
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static HPDF_STATUS
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BeforeWrite (HPDF_Dict obj)
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{
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HPDF_Number n = (HPDF_Number)HPDF_Dict_GetItem (obj, "Count",
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HPDF_OCLASS_NUMBER);
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HPDF_UINT count = CountChild ((HPDF_Outline)obj);
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HPDF_PTRACE((" BeforeWrite\n"));
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if (count == 0 && n)
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return HPDF_Dict_RemoveElement (obj, "Count");
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if (!HPDF_Outline_GetOpened ((HPDF_Outline)obj))
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count = count * -1;
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if (n)
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n->value = count;
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else
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if (count)
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return HPDF_Dict_AddNumber (obj, "Count", count);
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return HPDF_OK;
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}
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static HPDF_UINT
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CountChild (HPDF_Outline outline)
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{
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HPDF_Outline child = HPDF_Outline_GetFirst (outline);
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HPDF_UINT count = 0;
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HPDF_PTRACE((" CountChild\n"));
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while (child) {
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count++;
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if (HPDF_Outline_GetOpened (child))
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count += CountChild (child);
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child = HPDF_Outline_GetNext (child);
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}
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return count;
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}
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HPDF_BOOL
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HPDF_Outline_Validate (HPDF_Outline outline)
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{
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if (!outline)
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return HPDF_FALSE;
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HPDF_PTRACE((" HPDF_Outline_Validate\n"));
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if (outline->header.obj_class !=
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(HPDF_OSUBCLASS_OUTLINE | HPDF_OCLASS_DICT))
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return HPDF_FALSE;
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return HPDF_TRUE;
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}
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HPDF_EXPORT(HPDF_STATUS)
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HPDF_Outline_SetDestination (HPDF_Outline outline,
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HPDF_Destination dst)
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{
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HPDF_PTRACE((" HPDF_Outline_SetDestination\n"));
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if (!HPDF_Outline_Validate (outline))
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return HPDF_INVALID_OUTLINE;
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if (!HPDF_Destination_Validate (dst))
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return HPDF_RaiseError (outline->error, HPDF_INVALID_DESTINATION, 0);
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if (dst == NULL)
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return HPDF_Dict_RemoveElement (outline, "Dest");
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if (HPDF_Dict_Add (outline, "Dest", dst) != HPDF_OK)
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return HPDF_CheckError (outline->error);
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return HPDF_OK;
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}
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HPDF_EXPORT(HPDF_STATUS)
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HPDF_Outline_SetOpened (HPDF_Outline outline,
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HPDF_BOOL opened)
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{
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HPDF_Number n;
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if (!HPDF_Outline_Validate (outline))
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return HPDF_INVALID_OUTLINE;
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n = (HPDF_Number)HPDF_Dict_GetItem (outline, "_OPENED",
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HPDF_OCLASS_NUMBER);
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HPDF_PTRACE((" HPDF_Outline_SetOpened\n"));
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if (!n) {
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n = HPDF_Number_New (outline->mmgr, (HPDF_INT)opened);
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if (!n || HPDF_Dict_Add (outline, "_OPENED", n) != HPDF_OK)
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return HPDF_CheckError (outline->error);
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} else
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n->value = (HPDF_INT)opened;
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return HPDF_OK;
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}
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