1/* Read an XML document from standard input and print an element
2   outline on standard output.
3   Must be used with Expat compiled for UTF-8 output.
4                            __  __            _
5                         ___\ \/ /_ __   __ _| |_
6                        / _ \\  /| '_ \ / _` | __|
7                       |  __//  \| |_) | (_| | |_
8                        \___/_/\_\ .__/ \__,_|\__|
9                                 |_| XML parser
10
11   Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
12   Copyright (c) 2000-2017 Expat development team
13   Licensed under the MIT license:
14
15   Permission is  hereby granted,  free of charge,  to any  person obtaining
16   a  copy  of  this  software   and  associated  documentation  files  (the
17   "Software"),  to  deal in  the  Software  without restriction,  including
18   without  limitation the  rights  to use,  copy,  modify, merge,  publish,
19   distribute, sublicense, and/or sell copies of the Software, and to permit
20   persons  to whom  the Software  is  furnished to  do so,  subject to  the
21   following conditions:
22
23   The above copyright  notice and this permission notice  shall be included
24   in all copies or substantial portions of the Software.
25
26   THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
27   EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
28   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
29   NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
30   DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
31   OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
32   USE OR OTHER DEALINGS IN THE SOFTWARE.
33*/
34
35#include <stdio.h>
36#include <expat.h>
37
38#ifdef XML_LARGE_SIZE
39#  define XML_FMT_INT_MOD "ll"
40#else
41#  define XML_FMT_INT_MOD "l"
42#endif
43
44#ifdef XML_UNICODE_WCHAR_T
45#  define XML_FMT_STR "ls"
46#else
47#  define XML_FMT_STR "s"
48#endif
49
50#define BUFFSIZE 8192
51
52char Buff[BUFFSIZE];
53
54int Depth;
55
56static void XMLCALL
57start(void *data, const XML_Char *el, const XML_Char **attr) {
58  int i;
59  (void)data;
60
61  for (i = 0; i < Depth; i++)
62    printf("  ");
63
64  printf("%" XML_FMT_STR, el);
65
66  for (i = 0; attr[i]; i += 2) {
67    printf(" %" XML_FMT_STR "='%" XML_FMT_STR "'", attr[i], attr[i + 1]);
68  }
69
70  printf("\n");
71  Depth++;
72}
73
74static void XMLCALL
75end(void *data, const XML_Char *el) {
76  (void)data;
77  (void)el;
78
79  Depth--;
80}
81
82int
83main(int argc, char *argv[]) {
84  XML_Parser p = XML_ParserCreate(NULL);
85  (void)argc;
86  (void)argv;
87
88  if (! p) {
89    fprintf(stderr, "Couldn't allocate memory for parser\n");
90    exit(-1);
91  }
92
93  XML_SetElementHandler(p, start, end);
94
95  for (;;) {
96    int done;
97    int len;
98
99    len = (int)fread(Buff, 1, BUFFSIZE, stdin);
100    if (ferror(stdin)) {
101      fprintf(stderr, "Read error\n");
102      exit(-1);
103    }
104    done = feof(stdin);
105
106    if (XML_Parse(p, Buff, len, done) == XML_STATUS_ERROR) {
107      fprintf(stderr,
108              "Parse error at line %" XML_FMT_INT_MOD "u:\n%" XML_FMT_STR "\n",
109              XML_GetCurrentLineNumber(p),
110              XML_ErrorString(XML_GetErrorCode(p)));
111      exit(-1);
112    }
113
114    if (done)
115      break;
116  }
117  XML_ParserFree(p);
118  return 0;
119}
120