// Copyright 2014 PDFium Authors. All rights reserved.
|
// Use of this source code is governed by a BSD-style license that can be
|
// found in the LICENSE file.
|
|
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
|
|
#include "public/fpdf_text.h"
|
|
#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
|
#include "core/fpdfdoc/include/fpdf_doc.h"
|
#include "core/fpdftext/include/cpdf_linkextract.h"
|
#include "core/fpdftext/include/cpdf_textpage.h"
|
#include "core/fpdftext/include/cpdf_textpagefind.h"
|
#include "fpdfsdk/include/fsdk_define.h"
|
#include "third_party/base/numerics/safe_conversions.h"
|
#include "third_party/base/stl_util.h"
|
|
#ifdef PDF_ENABLE_XFA
|
#include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
|
#include "fpdfsdk/fpdfxfa/include/fpdfxfa_page.h"
|
#endif // PDF_ENABLE_XFA
|
|
#ifdef _WIN32
|
#include <tchar.h>
|
#endif
|
|
namespace {
|
|
CPDF_TextPage* CPDFTextPageFromFPDFTextPage(FPDF_TEXTPAGE text_page) {
|
return static_cast<CPDF_TextPage*>(text_page);
|
}
|
|
CPDF_TextPageFind* CPDFTextPageFindFromFPDFSchHandle(FPDF_SCHHANDLE handle) {
|
return static_cast<CPDF_TextPageFind*>(handle);
|
}
|
|
CPDF_LinkExtract* CPDFLinkExtractFromFPDFPageLink(FPDF_PAGELINK link) {
|
return static_cast<CPDF_LinkExtract*>(link);
|
}
|
|
} // namespace
|
|
DLLEXPORT FPDF_TEXTPAGE STDCALL FPDFText_LoadPage(FPDF_PAGE page) {
|
CPDF_Page* pPDFPage = CPDFPageFromFPDFPage(page);
|
if (!pPDFPage)
|
return nullptr;
|
|
#ifdef PDF_ENABLE_XFA
|
CPDFXFA_Page* pPage = (CPDFXFA_Page*)page;
|
CPDFXFA_Document* pDoc = pPage->GetDocument();
|
CPDF_ViewerPreferences viewRef(pDoc->GetPDFDoc());
|
#else // PDF_ENABLE_XFA
|
CPDF_ViewerPreferences viewRef(pPDFPage->m_pDocument);
|
#endif // PDF_ENABLE_XFA
|
|
CPDF_TextPage* textpage = new CPDF_TextPage(
|
pPDFPage, viewRef.IsDirectionR2L() ? FPDFText_Direction::Right
|
: FPDFText_Direction::Left);
|
textpage->ParseTextPage();
|
return textpage;
|
}
|
|
DLLEXPORT void STDCALL FPDFText_ClosePage(FPDF_TEXTPAGE text_page) {
|
delete CPDFTextPageFromFPDFTextPage(text_page);
|
}
|
|
DLLEXPORT int STDCALL FPDFText_CountChars(FPDF_TEXTPAGE text_page) {
|
if (!text_page)
|
return -1;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
return textpage->CountChars();
|
}
|
|
DLLEXPORT unsigned int STDCALL FPDFText_GetUnicode(FPDF_TEXTPAGE text_page,
|
int index) {
|
if (!text_page)
|
return 0;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
if (index < 0 || index >= textpage->CountChars())
|
return 0;
|
|
FPDF_CHAR_INFO charinfo;
|
textpage->GetCharInfo(index, &charinfo);
|
return charinfo.m_Unicode;
|
}
|
|
DLLEXPORT double STDCALL FPDFText_GetFontSize(FPDF_TEXTPAGE text_page,
|
int index) {
|
if (!text_page)
|
return 0;
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
|
if (index < 0 || index >= textpage->CountChars())
|
return 0;
|
|
FPDF_CHAR_INFO charinfo;
|
textpage->GetCharInfo(index, &charinfo);
|
return charinfo.m_FontSize;
|
}
|
|
DLLEXPORT void STDCALL FPDFText_GetCharBox(FPDF_TEXTPAGE text_page,
|
int index,
|
double* left,
|
double* right,
|
double* bottom,
|
double* top) {
|
if (!text_page)
|
return;
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
|
if (index < 0 || index >= textpage->CountChars())
|
return;
|
FPDF_CHAR_INFO charinfo;
|
textpage->GetCharInfo(index, &charinfo);
|
*left = charinfo.m_CharBox.left;
|
*right = charinfo.m_CharBox.right;
|
*bottom = charinfo.m_CharBox.bottom;
|
*top = charinfo.m_CharBox.top;
|
}
|
|
// select
|
DLLEXPORT int STDCALL FPDFText_GetCharIndexAtPos(FPDF_TEXTPAGE text_page,
|
double x,
|
double y,
|
double xTolerance,
|
double yTolerance) {
|
if (!text_page)
|
return -3;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
return textpage->GetIndexAtPos((FX_FLOAT)x, (FX_FLOAT)y, (FX_FLOAT)xTolerance,
|
(FX_FLOAT)yTolerance);
|
}
|
|
DLLEXPORT int STDCALL FPDFText_GetText(FPDF_TEXTPAGE text_page,
|
int start,
|
int count,
|
unsigned short* result) {
|
if (!text_page)
|
return 0;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
if (start >= textpage->CountChars())
|
return 0;
|
|
CFX_WideString str = textpage->GetPageText(start, count);
|
if (str.GetLength() > count)
|
str = str.Left(count);
|
|
CFX_ByteString cbUTF16str = str.UTF16LE_Encode();
|
FXSYS_memcpy(result, cbUTF16str.GetBuffer(cbUTF16str.GetLength()),
|
cbUTF16str.GetLength());
|
cbUTF16str.ReleaseBuffer(cbUTF16str.GetLength());
|
|
return cbUTF16str.GetLength() / sizeof(unsigned short);
|
}
|
|
DLLEXPORT int STDCALL FPDFText_CountRects(FPDF_TEXTPAGE text_page,
|
int start,
|
int count) {
|
if (!text_page)
|
return 0;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
return textpage->CountRects(start, count);
|
}
|
|
DLLEXPORT void STDCALL FPDFText_GetRect(FPDF_TEXTPAGE text_page,
|
int rect_index,
|
double* left,
|
double* top,
|
double* right,
|
double* bottom) {
|
if (!text_page)
|
return;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
CFX_FloatRect rect;
|
textpage->GetRect(rect_index, rect.left, rect.top, rect.right, rect.bottom);
|
*left = rect.left;
|
*top = rect.top;
|
*right = rect.right;
|
*bottom = rect.bottom;
|
}
|
|
DLLEXPORT int STDCALL FPDFText_GetBoundedText(FPDF_TEXTPAGE text_page,
|
double left,
|
double top,
|
double right,
|
double bottom,
|
unsigned short* buffer,
|
int buflen) {
|
if (!text_page)
|
return 0;
|
|
CPDF_TextPage* textpage = CPDFTextPageFromFPDFTextPage(text_page);
|
CFX_FloatRect rect((FX_FLOAT)left, (FX_FLOAT)bottom, (FX_FLOAT)right,
|
(FX_FLOAT)top);
|
CFX_WideString str = textpage->GetTextByRect(rect);
|
|
if (buflen <= 0 || !buffer)
|
return str.GetLength();
|
|
CFX_ByteString cbUTF16Str = str.UTF16LE_Encode();
|
int len = cbUTF16Str.GetLength() / sizeof(unsigned short);
|
int size = buflen > len ? len : buflen;
|
FXSYS_memcpy(buffer, cbUTF16Str.GetBuffer(size * sizeof(unsigned short)),
|
size * sizeof(unsigned short));
|
cbUTF16Str.ReleaseBuffer(size * sizeof(unsigned short));
|
|
return size;
|
}
|
|
// Search
|
// -1 for end
|
DLLEXPORT FPDF_SCHHANDLE STDCALL FPDFText_FindStart(FPDF_TEXTPAGE text_page,
|
FPDF_WIDESTRING findwhat,
|
unsigned long flags,
|
int start_index) {
|
if (!text_page)
|
return nullptr;
|
|
CPDF_TextPageFind* textpageFind =
|
new CPDF_TextPageFind(CPDFTextPageFromFPDFTextPage(text_page));
|
FX_STRSIZE len = CFX_WideString::WStringLength(findwhat);
|
textpageFind->FindFirst(CFX_WideString::FromUTF16LE(findwhat, len), flags,
|
start_index);
|
return textpageFind;
|
}
|
|
DLLEXPORT FPDF_BOOL STDCALL FPDFText_FindNext(FPDF_SCHHANDLE handle) {
|
if (!handle)
|
return FALSE;
|
|
CPDF_TextPageFind* textpageFind = CPDFTextPageFindFromFPDFSchHandle(handle);
|
return textpageFind->FindNext();
|
}
|
|
DLLEXPORT FPDF_BOOL STDCALL FPDFText_FindPrev(FPDF_SCHHANDLE handle) {
|
if (!handle)
|
return FALSE;
|
|
CPDF_TextPageFind* textpageFind = CPDFTextPageFindFromFPDFSchHandle(handle);
|
return textpageFind->FindPrev();
|
}
|
|
DLLEXPORT int STDCALL FPDFText_GetSchResultIndex(FPDF_SCHHANDLE handle) {
|
if (!handle)
|
return 0;
|
|
CPDF_TextPageFind* textpageFind = CPDFTextPageFindFromFPDFSchHandle(handle);
|
return textpageFind->GetCurOrder();
|
}
|
|
DLLEXPORT int STDCALL FPDFText_GetSchCount(FPDF_SCHHANDLE handle) {
|
if (!handle)
|
return 0;
|
|
CPDF_TextPageFind* textpageFind = CPDFTextPageFindFromFPDFSchHandle(handle);
|
return textpageFind->GetMatchedCount();
|
}
|
|
DLLEXPORT void STDCALL FPDFText_FindClose(FPDF_SCHHANDLE handle) {
|
if (!handle)
|
return;
|
|
CPDF_TextPageFind* textpageFind = CPDFTextPageFindFromFPDFSchHandle(handle);
|
delete textpageFind;
|
handle = nullptr;
|
}
|
|
// web link
|
DLLEXPORT FPDF_PAGELINK STDCALL FPDFLink_LoadWebLinks(FPDF_TEXTPAGE text_page) {
|
if (!text_page)
|
return nullptr;
|
|
CPDF_LinkExtract* pageLink =
|
new CPDF_LinkExtract(CPDFTextPageFromFPDFTextPage(text_page));
|
pageLink->ExtractLinks();
|
return pageLink;
|
}
|
|
DLLEXPORT int STDCALL FPDFLink_CountWebLinks(FPDF_PAGELINK link_page) {
|
if (!link_page)
|
return 0;
|
|
CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
|
return pdfium::base::checked_cast<int>(pageLink->CountLinks());
|
}
|
|
DLLEXPORT int STDCALL FPDFLink_GetURL(FPDF_PAGELINK link_page,
|
int link_index,
|
unsigned short* buffer,
|
int buflen) {
|
CFX_WideString wsUrl(L"");
|
if (link_page && link_index >= 0) {
|
CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
|
wsUrl = pageLink->GetURL(link_index);
|
}
|
CFX_ByteString cbUTF16URL = wsUrl.UTF16LE_Encode();
|
int required = cbUTF16URL.GetLength() / sizeof(unsigned short);
|
if (!buffer || buflen <= 0)
|
return required;
|
|
int size = std::min(required, buflen);
|
if (size > 0) {
|
int buf_size = size * sizeof(unsigned short);
|
FXSYS_memcpy(buffer, cbUTF16URL.GetBuffer(buf_size), buf_size);
|
}
|
return size;
|
}
|
|
DLLEXPORT int STDCALL FPDFLink_CountRects(FPDF_PAGELINK link_page,
|
int link_index) {
|
if (!link_page || link_index < 0)
|
return 0;
|
|
CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
|
return pdfium::CollectionSize<int>(pageLink->GetRects(link_index));
|
}
|
|
DLLEXPORT void STDCALL FPDFLink_GetRect(FPDF_PAGELINK link_page,
|
int link_index,
|
int rect_index,
|
double* left,
|
double* top,
|
double* right,
|
double* bottom) {
|
if (!link_page || link_index < 0 || rect_index < 0)
|
return;
|
|
CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
|
std::vector<CFX_FloatRect> rectArray = pageLink->GetRects(link_index);
|
if (rect_index >= pdfium::CollectionSize<int>(rectArray))
|
return;
|
|
*left = rectArray[rect_index].left;
|
*right = rectArray[rect_index].right;
|
*top = rectArray[rect_index].top;
|
*bottom = rectArray[rect_index].bottom;
|
}
|
|
DLLEXPORT void STDCALL FPDFLink_CloseWebLinks(FPDF_PAGELINK link_page) {
|
delete CPDFLinkExtractFromFPDFPageLink(link_page);
|
}
|
