77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
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#include <pcre.h>
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#include <iostream>
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#include <string>
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#include <vector>
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#include "TokenDefinition.h"
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#include "refptr.h"
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using namespace std;
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#define WHITESPACE " \n\r\t\v"
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static string trim(string s)
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{
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size_t lastpos = s.find_last_not_of(WHITESPACE);
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if (lastpos == string::npos)
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return "";
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s.erase(lastpos + 1);
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s.erase(0, s.find_first_not_of(WHITESPACE));
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return s;
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}
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static refptr< vector<string> > split(const string & delim, const string & str)
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{
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refptr< vector<string> > ret = new vector<string>();
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string s = str;
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size_t pos;
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while ( (pos = s.find(delim)) != string::npos )
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{
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string t = s.substr(0, pos);
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ret->push_back(t);
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s.erase(0, pos + 1);
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}
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if (s != "")
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ret->push_back(s);
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return ret;
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}
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static string c_escape(const string & orig)
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{
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string result;
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for (string::const_iterator it = orig.begin(); it != orig.end(); it++)
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{
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if (*it == '\\' || *it == '"')
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result += '\\';
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result += *it;
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}
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return result;
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}
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bool TokenDefinition::create(const string & name,
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const string & definition, const string & flags)
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{
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const char * errptr;
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int erroffset;
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pcre * re = pcre_compile(definition.c_str(), 0, &errptr, &erroffset, NULL);
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if (re == NULL)
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{
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cerr << "Error compiling regular expression '" << definition
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<< "' at position " << erroffset << ": " << errptr << endl;
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return false;
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}
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m_name = name;
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m_definition = definition;
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pcre_free(re);
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refptr< vector< string > > parts = split(",", flags);
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return true;
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}
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string TokenDefinition::getCString() const
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{
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return c_escape(m_definition);
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}
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