1/*
2 * Copyright (C) 2009-2010, Pino Toscano <pino@kde.org>
3 * Copyright (C) 2013 Adrian Johnson <ajohnson@redneon.com>
4 * Copyright (C) 2014, Hans-Peter Deifel <hpdeifel@gmx.de>
5 * Copyright (C) 2016 Jakub Alba <jakubalba@gmail.com>
6 * Copyright (C) 2017-2019 Albert Astals Cid <aacid@kde.org>
7 * Copyright (C) 2018 Suzuki Toshiya <mpsuzuki@hiroshima-u.ac.jp>
8 * Copyright (C) 2020 Adam Reichold <adam.reichold@t-online.de>
9 * Copyright (C) 2024 Oliver Sander <oliver.sander@tu-dresden.de>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
24 */
25
26#include "poppler-private.h"
27
28#include "GooString.h"
29#include "Page.h"
30#include "UTF.h"
31
32#include <ctime>
33#include <iostream>
34#include <sstream>
35
36using namespace poppler;
37
38static void stderr_debug_function(const std::string &msg, void * /*data*/)
39{
40 std::cerr << "poppler/" << msg << std::endl;
41}
42
43debug_func detail::user_debug_function = stderr_debug_function;
44void *detail::debug_closure = nullptr;
45
46void detail::error_function(ErrorCategory /*category*/, Goffset pos, const char *msg)
47{
48 std::ostringstream oss;
49 if (pos >= 0) {
50 oss << "error (" << pos << "): ";
51 } else {
52 oss << "error: ";
53 }
54 oss << msg;
55 detail::user_debug_function(oss.str(), detail::debug_closure);
56}
57
58rectf detail::pdfrectangle_to_rectf(const PDFRectangle &pdfrect)
59{
60 return rectf(pdfrect.x1, pdfrect.y1, pdfrect.x2 - pdfrect.x1, pdfrect.y2 - pdfrect.y1);
61}
62
63ustring detail::unicode_GooString_to_ustring(const GooString *str)
64{
65 const char *data = str->c_str();
66 const int len = str->getLength();
67
68 const bool is_unicodeLE = hasUnicodeByteOrderMarkLE(s: str->toStr());
69 const bool is_unicode = hasUnicodeByteOrderMark(s: str->toStr()) || is_unicodeLE;
70 int i = is_unicode ? 2 : 0;
71 ustring::size_type ret_len = len - i;
72 if (is_unicode) {
73 ret_len >>= 1;
74 }
75 ustring ret(ret_len, 0);
76 size_t ret_index = 0;
77 ustring::value_type u;
78 if (is_unicode) {
79 while (i < len) {
80 u = is_unicodeLE ? ((data[i + 1] & 0xff) << 8) | (data[i] & 0xff) : ((data[i] & 0xff) << 8) | (data[i + 1] & 0xff);
81 i += 2;
82 ret[ret_index++] = u;
83 }
84 } else {
85 while (i < len) {
86 u = data[i] & 0xff;
87 ++i;
88 ret[ret_index++] = u;
89 }
90 }
91
92 return ret;
93}
94
95ustring detail::unicode_to_ustring(const Unicode *u, int length)
96{
97 ustring str(length, 0);
98 ustring::iterator it = str.begin();
99 const Unicode *uu = u;
100 for (int i = 0; i < length; ++i) {
101 *it++ = ustring::value_type(*uu++ & 0xffff);
102 }
103 return str;
104}
105
106GooString *detail::ustring_to_unicode_GooString(const ustring &str)
107{
108 const size_t len = str.size() * 2 + 2;
109 const ustring::value_type *me = str.data();
110 byte_array ba(len);
111 ba[0] = (char)0xfe;
112 ba[1] = (char)0xff;
113 for (size_t i = 0; i < str.size(); ++i, ++me) {
114 ba[i * 2 + 2] = ((*me >> 8) & 0xff);
115 ba[i * 2 + 3] = (*me & 0xff);
116 }
117 GooString *goo = new GooString(&ba[0], len);
118 return goo;
119}
120

source code of poppler/cpp/poppler-private.cpp