quickfix-ffi 0.2.1

Low level binding to quickfix C++ library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
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
67
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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160

/****************************************************************************
** Copyright (c) 2001-2014
**
** This file is part of the QuickFIX FIX Engine
**
** This file may be distributed under the terms of the quickfixengine.org
** license as defined by quickfixengine.org and appearing in the file
** LICENSE included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.quickfixengine.org/LICENSE for licensing information.
**
** Contact ask@quickfixengine.org if any conditions of this licensing are
** not clear to you.
**
****************************************************************************/

#ifdef _MSC_VER
#include "stdafx.h"
#else
#include "config.h"
#endif

#include "Settings.h"
#include <cstring>

namespace FIX {
bool isComment(const std::string &line) {
  if (line.size() == 0) {
    return false;
  }

  return line[0] == '#';
}

bool isSection(const std::string &line) {
  if (line.size() == 0) {
    return false;
  }

  return line[0] == '[' && line[line.size() - 1] == ']';
}

std::string splitSection(const std::string &line) { return string_strip(std::string(line, 1, line.size() - 2)); }

bool isKeyValue(const std::string &line) { return line.find('=') != std::string::npos; }

std::pair<std::string, std::string> splitKeyValue(const std::string &line) {
  size_t equals = line.find('=');
  std::string key = std::string(line, 0, equals);
  std::string value = std::string(line, equals + 1, std::string::npos);
  return std::pair<std::string, std::string>(key, value);
}

std::string resolveEnvVars(const std::string &str) {
  std::string resultStr;
  size_t actPos = 0;
  size_t sourceLen = str.length();

  while (actPos < sourceLen) {
    char c = str[actPos++];
    if (actPos < sourceLen) {
      // escape character
      if (c == '\\') {
        c = str[actPos++];
        switch (c) {
        case 't':
          resultStr.append(1, '\t');
          break;
        case 'r':
          resultStr.append(1, '\r');
          break;
        case 'n':
          resultStr.append(1, '\n');
          break;
        default:
          resultStr.append(1, c);
          break;
        }
        continue;
      }

      // variable substitution
      if (c == '$') {
        bool inBraces = false;
        c = str[actPos++];
        if ((c == '(') || (c == '{')) {
          c = str[actPos++];
          inBraces = true;
        }

        // actPos now points at start of var name
        if (actPos >= sourceLen) {
          break;
        }
        std::string varName;
        while ((actPos <= sourceLen)) {
          varName.append(1, c); // this must be done before overwriting c
          c = str[actPos++];
          if (std::strchr(" /:;,.=\"'?#+*()[]{}$&%\t\n", c)) {
            break;
          }
        }
        if (inBraces && (actPos <= sourceLen) && ((c == ')') || (c == '}')))
          ;
        else {
          --actPos;
        }
        // varName contains the name of the variable,
        // actPos points to first char _after_ variable
        const char *varValue = 0;
        if (!varName.empty() && (0 != (varValue = getenv(varName.c_str())))) {
          resultStr.append(varValue);
        }
        continue;
      }
    }

    // nothing special, just copy
    resultStr.append(1, c);
  }

  return resultStr;
}

std::istream &operator>>(std::istream &stream, Settings &s) {
  char buffer[1024];
  std::string line;
  Settings::Sections::iterator section = s.m_sections.end();
  ;

  while (stream.getline(buffer, sizeof(buffer))) {
    line = string_strip(buffer);
    if (isComment(line)) {
      continue;
    } else if (isSection(line)) {
      section = s.m_sections.insert(s.m_sections.end(), Dictionary(splitSection(line)));
    } else if (isKeyValue(line)) {
      std::pair<std::string, std::string> keyValue = splitKeyValue(line);
      if (section == s.m_sections.end()) {
        continue;
      }
      (*section).setString(keyValue.first, s.m_resolveEnvVars ? resolveEnvVars(keyValue.second) : keyValue.second);
    }
  }
  return stream;
}

Settings::Sections Settings::get(const std::string &name) const {
  Sections sections;
  for (Sections::size_type i = 0; i < m_sections.size(); ++i) {
    if (m_sections[i].getName() == name) {
      sections.push_back(m_sections[i]);
    }
  }
  return sections;
}
} // namespace FIX