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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/**
* @file
* @author 2016 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include "String.h"
#include <sstream>
#include <boost/algorithm/string.hpp>
namespace uscxml {
#define ISWHITESPACE(char) (isspace(char))
std::string escapeMacro(std::string const &s) {
// inspired by http://stackoverflow.com/questions/2417588/escaping-a-c-string
std::string returnValue = "";
std::string specialChars = "";
for (std::string::const_iterator iter = s.begin(), end = s.end(); iter != end; ++iter) {
char c = *iter;
if (('0' <= c && c <= '9') || ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z') || c == '_') {
returnValue += c;
} else {
specialChars += c;
}
}
if (!specialChars.empty()) {
// http://www.cplusplus.com/reference/functional/hash/
// returns the same result for a given string within one execution
std::hash<std::string> strHash;
returnValue += "_";
returnValue += strHash(specialChars);
}
return returnValue;
}
std::string toBinStr(size_t val, size_t margin) {
// inspired by http://www.cplusplus.com/forum/general/65862/
// mask has only the leftmost bit set.
size_t mask = 1u << (std::numeric_limits<unsigned>::digits - 1);
// skip leading bits that are not set.
while (0 == (val & mask) && mask != 0)
mask >>= 1; // shift all bits to the right by 1
std::string binStr;
binStr.reserve(std::numeric_limits<unsigned>::digits + 1);
do {
// add a '1' or '0' depending the current bit.
binStr += static_cast<char>(val & mask) + '0';
} while ((mask >>= 1) != 0); // next bit, when mask is 0 we've processed all bits
// fill with leading 0
if (binStr.size() < margin) {
for (size_t i = 0; i < (margin - binStr.size()); i++) {
binStr = "0" + binStr;
}
}
return binStr;
}
std::list<std::string> tokenize(const std::string &line, const char sep, bool trimWhiteSpace) {
std::list<std::string> tokens;
// appr. 3x faster than stringstream
size_t start = 0;
for (size_t i = 0; i < line.size(); i++) {
if (line[i] == sep || (trimWhiteSpace && ISWHITESPACE(line[i]))) {
if (i > 0 && start < i) {
tokens.push_back(line.substr(start, i - start));
}
while (line[i] == sep || (trimWhiteSpace && ISWHITESPACE(line[i]))) {
i++; // skip multiple occurences of seperator and whitespaces
}
start = i;
}
if (i + 1 == line.size()) {
tokens.push_back(line.substr(start, i + 1 - start));
}
}
return tokens;
}
std::string spaceNormalize(const std::string &text) {
std::stringstream content;
#if 1
// 195ms with test-performance-events.scml
std::string seperator;
size_t start = 0;
for (size_t i = 0; i < text.size(); i++) {
if (isspace(text[i])) {
if (i > 0 && start < i) {
content << seperator << text.substr(start, i - start);
seperator = " ";
}
while (isspace(text[++i])); // skip whitespaces
start = i;
} else if (i + 1 == text.size()) {
content << seperator << text.substr(start, i + 1 - start);
}
}
// std::cerr << ">>" << content.str() << "<<" << std::endl;
#else
// 291ms with test-performance-events.scml
std::istringstream iss(text);
std::string seperator;
do {
std::string token;
iss >> token;
if (token.length() > 0) {
content << seperator << token;
seperator = " ";
}
} while (iss);
#endif
return content.str();
}
// see: http://www.w3.org/TR/scxml/#EventDescriptors
bool nameMatch(const std::string &eventDescs, const std::string &eventName) {
#if 1
if (eventDescs.length() == 0 || eventName.length() == 0)
return false;
// naive case of single descriptor and exact match
if (boost::iequals(eventDescs, eventName))
return true;
size_t start = 0;
std::string eventDesc;
for (size_t i = 0; i < eventDescs.size(); i++) {
if (isspace(eventDescs[i])) {
if (i > 0 && start < i - 1) {
eventDesc = eventDescs.substr(start, i - start);
}
while (isspace(eventDescs[++i])); // skip whitespaces
start = i;
} else if (i + 1 == eventDescs.size()) {
eventDesc = eventDescs.substr(start, i + 1 - start);
}
if (eventDesc.size() > 0) {
// remove optional trailing .* for CCXML compatibility
if (eventDesc.find("*", eventDesc.size() - 1) != std::string::npos)
eventDesc = eventDesc.substr(0, eventDesc.size() - 1);
if (eventDesc.find(".", eventDesc.size() - 1) != std::string::npos)
eventDesc = eventDesc.substr(0, eventDesc.size() - 1);
// was eventDesc the * wildcard
if (eventDesc.size() == 0)
return true;
// eventDesc has to be a real prefix of event now and therefore shorter
if (eventDesc.size() > eventName.size())
goto NEXT_DESC;
// are they already equal?
if (boost::iequals(eventDesc, eventName))
return true;
if (eventName.find(eventDesc) == 0) {
if (eventName.find(".", eventDesc.size()) == eventDesc.size())
return true;
}
NEXT_DESC:
eventDesc = "";
}
}
return false;
#else
const char* dPtr = eventDescs.c_str();
const char* ePtr = eventName.c_str();
while(*dPtr != 0) {
if (*dPtr == '*' && *ePtr != 0) // something following
return true;
// descriptor differs from event name
if (*dPtr != *ePtr) {
// move to next descriptor
while(*dPtr != ' ' && *dPtr != 0) {
dPtr++;
}
if (*dPtr == 0)
return false;
dPtr++;
ePtr = eventName.c_str();
} else {
// move both pointers one character
dPtr++;
ePtr++;
}
// descriptor is done, return match
if (((*dPtr == 0 || *dPtr == ' ') && (*ePtr == 0 || *ePtr == ' ')) || // exact match, end of string
(*dPtr == ' ' && *ePtr == '.') || (*dPtr == 0 && *ePtr == '.')) // prefix match
return true;
}
return false;
#endif
}
}
|
