outline.c revision 1.6 
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# if defined(XML_USE_MSC_EXTENSIONS) && _MSC_VER < 1400
40#  define XML_FMT_INT_MOD "I64"
41# else
42#  define XML_FMT_INT_MOD "ll"
43# endif
44#else
45# define XML_FMT_INT_MOD "l"
46#endif
47
48#ifdef XML_UNICODE_WCHAR_T
49# define XML_FMT_STR "ls"
50#else
51# define XML_FMT_STR "s"
52#endif
53
54#define BUFFSIZE        8192
55
56char Buff[BUFFSIZE];
57
58int Depth;
59
60static void XMLCALL
61start(void *data, const XML_Char *el, const XML_Char **attr)
62{
63  int i;
64  (void)data;
65
66  for (i = 0; i < Depth; i++)
67    printf("  ");
68
69  printf("%" XML_FMT_STR, el);
70
71  for (i = 0; attr[i]; i += 2) {
72    printf(" %" XML_FMT_STR "='%" XML_FMT_STR "'", attr[i], attr[i + 1]);
73  }
74
75  printf("\n");
76  Depth++;
77}
78
79static void XMLCALL
80end(void *data, const XML_Char *el)
81{
82  (void)data;
83  (void)el;
84
85  Depth--;
86}
87
88int
89main(int argc, char *argv[])
90{
91  XML_Parser p = XML_ParserCreate(NULL);
92  (void)argc;
93  (void)argv;
94
95  if (! p) {
96    fprintf(stderr, "Couldn't allocate memory for parser\n");
97    exit(-1);
98  }
99
100  XML_SetElementHandler(p, start, end);
101
102  for (;;) {
103    int done;
104    int len;
105
106    len = (int)fread(Buff, 1, BUFFSIZE, stdin);
107    if (ferror(stdin)) {
108      fprintf(stderr, "Read error\n");
109      exit(-1);
110    }
111    done = feof(stdin);
112
113    if (XML_Parse(p, Buff, len, done) == XML_STATUS_ERROR) {
114      fprintf(stderr,
115              "Parse error at line %" XML_FMT_INT_MOD "u:\n%" XML_FMT_STR "\n",
116              XML_GetCurrentLineNumber(p),
117              XML_ErrorString(XML_GetErrorCode(p)));
118      exit(-1);
119    }
120
121    if (done)
122      break;
123  }
124  XML_ParserFree(p);
125  return 0;
126}
127