1 /*
2 __ __ _
3 ___\ \/ /_ __ __ _| |_
4 / _ \\ /| '_ \ / _` | __|
5 | __// \| |_) | (_| | |_
6 \___/_/\_\ .__/ \__,_|\__|
7 |_| XML parser
8
9 Copyright (c) 2002-2004 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
10 Copyright (c) 2003 Greg Stein <gstein@users.sourceforge.net>
11 Copyright (c) 2016 Gilles Espinasse <g.esp@free.fr>
12 Copyright (c) 2016-2023 Sebastian Pipping <sebastian@pipping.org>
13 Copyright (c) 2017 Joe Orton <jorton@redhat.com>
14 Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk>
15 Copyright (c) 2022 Sean McBride <sean@rogue-research.com>
16 Licensed under the MIT license:
17
18 Permission is hereby granted, free of charge, to any person obtaining
19 a copy of this software and associated documentation files (the
20 "Software"), to deal in the Software without restriction, including
21 without limitation the rights to use, copy, modify, merge, publish,
22 distribute, sublicense, and/or sell copies of the Software, and to permit
23 persons to whom the Software is furnished to do so, subject to the
24 following conditions:
25
26 The above copyright notice and this permission notice shall be included
27 in all copies or substantial portions of the Software.
28
29 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
32 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
33 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
34 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
35 USE OR OTHER DEALINGS IN THE SOFTWARE.
36 */
37
38 #if defined(NDEBUG)
39 # undef NDEBUG /* because test suite relies on assert(...) at the moment */
40 #endif
41
42 #include "expat_config.h"
43 #include "minicheck.h"
44
45 #include <assert.h>
46 #include <stdio.h>
47 #include <string.h>
48
49 #include "chardata.h"
50
51 static int
xmlstrlen(const XML_Char * s)52 xmlstrlen(const XML_Char *s) {
53 int len = 0;
54 assert(s != NULL);
55 while (s[len] != 0)
56 ++len;
57 return len;
58 }
59
60 void
CharData_Init(CharData * storage)61 CharData_Init(CharData *storage) {
62 assert(storage != NULL);
63 storage->count = -1;
64 }
65
66 void
CharData_AppendXMLChars(CharData * storage,const XML_Char * s,int len)67 CharData_AppendXMLChars(CharData *storage, const XML_Char *s, int len) {
68 int maxchars;
69
70 assert(storage != NULL);
71 assert(s != NULL);
72 maxchars = sizeof(storage->data) / sizeof(storage->data[0]);
73 if (storage->count < 0)
74 storage->count = 0;
75 if (len < 0)
76 len = xmlstrlen(s);
77 if ((len + storage->count) > maxchars) {
78 len = (maxchars - storage->count);
79 }
80 if (len + storage->count < (int)sizeof(storage->data)) {
81 memcpy(storage->data + storage->count, s, len * sizeof(storage->data[0]));
82 storage->count += len;
83 }
84 }
85
86 int
CharData_CheckXMLChars(CharData * storage,const XML_Char * expected)87 CharData_CheckXMLChars(CharData *storage, const XML_Char *expected) {
88 int len = xmlstrlen(expected);
89 int count;
90
91 assert(storage != NULL);
92 count = (storage->count < 0) ? 0 : storage->count;
93 if (len != count) {
94 char buffer[1024];
95 snprintf(buffer, sizeof(buffer),
96 "wrong number of data characters: got %d, expected %d", count,
97 len);
98 fail(buffer);
99 return 0;
100 }
101 if (memcmp(expected, storage->data, len * sizeof(storage->data[0])) != 0) {
102 fail("got bad data bytes");
103 return 0;
104 }
105 return 1;
106 }
107