Class: XPather

Inherits:
Object
  • Object
show all
Defined in:
lib/xpather.rb,
ext/xpather/xpather.c

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(xmlStr) ⇒ Object 



99
100
101
102
103
 
# File 'ext/xpather/xpather.c', line 99

static VALUE initialize(VALUE self, VALUE xmlStr)
{
  rb_iv_set(self, "@xml_str", xmlStr);
  return self;
}

Class Method Details

.new(xmlStr) ⇒ Object 



110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
 
# File 'ext/xpather/xpather.c', line 110

VALUE constructor(VALUE self, VALUE xmlStr)
{
  xmlDocPtr doc;
  const char *xmlCStr = StringValueCStr(xmlStr);
  VALUE argv[1];
  VALUE t_data;

  doc = xmlParseMemory(xmlCStr, (int)strlen(xmlCStr));
  if (doc == NULL) {
    fprintf(stderr, "Error: unable to parse xml\n");
    return Qnil;
  }

  t_data = Data_Wrap_Struct(self, 0, xml_free, doc);
  argv[0] = xmlStr;
  rb_obj_call_init(t_data, 1, argv);
  return t_data;
}

Instance Method Details

#get(xpathExpr) ⇒ Object 



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
 
# File 'ext/xpather/xpather.c', line 34

VALUE get(VALUE self, VALUE xpathExpr)
{
  VALUE results = rb_ary_new();
  xmlDocPtr doc;
  xmlXPathObjectPtr xpathObj;
  xmlNodeSetPtr nodes;
  xmlNodePtr current;
  int size, i;

  Data_Get_Struct(self, xmlDoc, doc);

  xpathObj = eval_and_search(doc, StringValueCStr(xpathExpr));

  if (xpathObj == NULL) { return Qnil; }

  nodes = xpathObj->nodesetval;
  size = (nodes) ? nodes->nodeNr : 0;

  if (size == 0) { return Qnil; }

  if (size == 1) {
    results = rb_str_new2(xmlNodeGetContent(nodes->nodeTab[0]));
  } else {
    for (i = 0; i < size; i++) {
      current = nodes->nodeTab[i];
      rb_ary_push(results, rb_str_new2(xmlNodeGetContent(current)));
    }
  }

  xmlXPathFreeObject(xpathObj);

  return results;
}

#search(xpathExpr) ⇒ Object 



68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
 
# File 'ext/xpather/xpather.c', line 68

VALUE search(VALUE self, VALUE xpathExpr)
{
  VALUE results = rb_ary_new();
  xmlDocPtr doc;
  xmlXPathObjectPtr xpathObj;
  xmlNodeSetPtr nodes;
  xmlNodePtr cur;
  xmlBufferPtr nodeBuffer;
  int size, i;

  Data_Get_Struct(self, xmlDoc, doc);

  xpathObj = eval_and_search(doc, StringValueCStr(xpathExpr));

  if (xpathObj == NULL) { return Qnil; }

  nodes = xpathObj->nodesetval;
  size = (nodes) ? nodes->nodeNr : 0;

  for (i = 0; i < size; ++i) {
    nodeBuffer = xmlBufferCreate();
    xmlNodeDump(nodeBuffer, doc, nodes->nodeTab[i], 0, 1);
    rb_ary_push(results, rb_str_new2(nodeBuffer->content));
    xmlBufferFree(nodeBuffer);
  }

  xmlXPathFreeObject(xpathObj);

  return results;
}

#xml_str ⇒ Object 



105
106
107
108
 
# File 'ext/xpather/xpather.c', line 105

static VALUE xml_str(VALUE self)
{
  return rb_iv_get(self, "@xml_str");
}