YAZ  5.23.1
xml_get.c
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1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) Index Data
3  * See the file LICENSE for details.
4  */
9 #if HAVE_CONFIG_H
10 #include <config.h>
11 #endif
12 
13 #include <string.h>
14 #include <stdarg.h>
15 #include <yaz/xmalloc.h>
16 #include <yaz/xml_get.h>
17 #if YAZ_HAVE_XML2
18 
19 const char *yaz_xml_get_prop(const xmlNode *n, const char *fmt, ...)
20 {
21  int no = 0;
22  va_list ap;
23  const char *cp;
24  struct _xmlAttr *attr;
25 
26  va_start(ap, fmt);
27  for (cp = fmt; *cp; cp++)
28  if (*cp == '%')
29  no++;
30  if (no > 0)
31  {
32  const char ***ar = xmalloc(sizeof(*ar) * no);
33  int i;
34  for (i = 0; i < no; i++)
35  {
36  const char **s = va_arg(ap, const char **);
37  ar[i] = s;
38  }
39  va_end(ap);
40  for (attr = n->properties; attr; attr = attr->next)
41  {
42  const char *cp1 = fmt;
43  for (i = 0; *cp1; i++)
44  {
45  const char *cp2 = cp1;
46  size_t l;
47  while (*cp2 != '\0' && *cp2 != '%')
48  cp2++;
49  if (*cp2 != '\0')
50  { /* no % following, break out (bad fmt really) */
51  cp1 = cp2;
52  break;
53  }
54  l = cp2 - cp1;
55  if (l > 0 && strlen((const char *) attr->name) == l &&
56  !memcmp((const char *) attr->name, cp1, l))
57  break;
58  cp1 = 1 + cp2;
59  if (*cp1)
60  cp1++; /* skip char following % */
61  }
62  if (!*cp1)
63  {
64  /* attribute not listed in fmt: return first unknown one */
65  xfree(ar);
66  return (const char *) attr->name;
67  }
68  *ar[i] = (const char *) attr->children->content;
69  }
70  xfree(ar);
71  }
72  else
73  {
74  va_end(ap);
75  for (attr = n->properties; attr; attr = attr->next)
76  {
77  if (!strcmp((const char *) attr->name, fmt))
78  return (const char *) attr->children->content;
79  }
80  }
81  return 0; /* failure for simple mode; successful for %mode */
82 }
83 
84 #endif
85 
86 /*
87  * Local variables:
88  * c-basic-offset: 4
89  * c-file-style: "Stroustrup"
90  * indent-tabs-mode: nil
91  * End:
92  * vim: shiftwidth=4 tabstop=8 expandtab
93  */
94 
const char * yaz_xml_get_prop(const xmlNode *n, const char *fmt,...)
Definition: xml_get.c:19
XML node getter/creation utilities.
#define xfree(x)
utility macro which calls xfree_f
Definition: xmalloc.h:53
#define xmalloc(x)
utility macro which calls malloc_f
Definition: xmalloc.h:49
Header for memory handling functions.