src/openbabel/tokenst.cpp

/**********************************************************************
tokenst.cpp - Tokenize a string.
 
Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc.
Some portions Copyright (C) 2001-2005 by Geoffrey R. Hutchison
 
This file is part of the Open Babel project.
For more information, see <http://openbabel.sourceforge.net/>
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation version 2 of the License.
 
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.  See the
GNU General Public License for more details.
***********************************************************************/

#ifdef WIN32
#pragma warning (disable : 4786)
#endif

#include <algorithm>
#include <vector>
#include <string>

#include "config.h"

using namespace std;
/*
OBAPI bool tokenize(vector<string> &, const char *, const char *);
OBAPI char *trim_spaces(char *string);
OBAPI bool tokenize(vector<string> &vcr, string &s, const char *delimstr,int limit=-1);
*/
namespace OpenBabel
{

  //! Break a string (supplied as the second argument) into tokens, returned 
  //! in the first argument. Tokens are determined by the delimiters supplied
  //! (defaults to whitespace (i.e., spaces, tabs, newlines)
OBAPI bool tokenize(vector<string> &vcr, const char *buf, const char *delimstr)
{
    vcr.clear();
    string s = buf;
    s += "\n";
    size_t startpos=0,endpos=0;

    for (;;)
    {
        startpos = s.find_first_not_of(delimstr,startpos);
        endpos = s.find_first_of(delimstr,startpos);

        if (endpos <= s.size() && startpos <= s.size())
            vcr.push_back(s.substr(startpos,endpos-startpos));
        else
            break;

        startpos = endpos+1;
    }

    return(true);
}

  //! Trim any trailing spaces at the end of the supplied string.
OBAPI char *trim_spaces(char *string)
{
    int length;

    length = strlen(string);
    if (length == 0)
        return string;

    while ((length > 0) && (string[0] == ' '))
    {
        string++;
        --length;
    }

    if (length > 0)
    {
        while ((length > 0) && (string[length-1] == ' '))
        {
            string[length-1] = '\0';
            --length;
        }
    }

    return(string);
}

//! Break a string (supplied as the second argument) into tokens, returned 
//! in the first argument. Tokens are determined by the delimiters supplied
//! (defaults to whitespace (i.e., spaces, tabs, newlines)
//! Only breaks at most 'limit' tokens and the last item in the vector may
//! include un-parsed tokens.
OBAPI bool tokenize(vector<string> &vcr, string &s, const char *delimstr, int limit)
{
    vcr.clear();
    size_t startpos=0,endpos=0;

    int matched=0;
    unsigned int s_size = s.size();
    for (;;)
    {
        startpos = s.find_first_not_of(delimstr,startpos);
        endpos = s.find_first_of(delimstr,startpos);
        if (endpos <= s_size && startpos <= s_size)
        {
            vcr.push_back(s.substr(startpos,endpos-startpos));

            matched++;
            if (matched == limit)
            {
                startpos = endpos+1;
                vcr.push_back(s.substr(startpos,s_size));
                break;
            }
        }
        else
        {
            if (startpos < s_size)
                vcr.push_back(s.substr(startpos,s_size-startpos));
            break;
        }

        startpos = endpos+1;
    }
    return(true);
}

OBAPI void Trim(string& txt)
{
        string::size_type pos = txt.find_last_not_of(" \t\n\r");
        if(pos!=string::npos)
                txt.erase(pos+1);
        else
                txt.erase();

        pos = txt.find_first_not_of(" \t\n\r");
        if(pos!=string::npos)
                txt.erase(0, pos);
        else
                txt.erase();
}

} // end namespace OpenBabel

//! \file tokenst.cpp
//! \brief Tokenize a string.
Revision:	751
Committed:	Thu Nov 17 20:38:45 2005 UTC (19 years, 5 months ago) by gezelter
File size:	3967 byte(s)
Log Message:	Unifying config.h stuff and making sure the OpenBabel codes can find our default (and environment variable) Force Field directories.
#	User	Rev	Content
1	tim	741	/**********************************************************************
2			tokenst.cpp - Tokenize a string.
3
4			Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc.
5			Some portions Copyright (C) 2001-2005 by Geoffrey R. Hutchison
6
7			This file is part of the Open Babel project.
8			For more information, see <http://openbabel.sourceforge.net/>
9
10			This program is free software; you can redistribute it and/or modify
11			it under the terms of the GNU General Public License as published by
12			the Free Software Foundation version 2 of the License.
13
14			This program is distributed in the hope that it will be useful,
15			but WITHOUT ANY WARRANTY; without even the implied warranty of
16			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17			GNU General Public License for more details.
18			***********************************************************************/
19
20			#ifdef WIN32
21			#pragma warning (disable : 4786)
22			#endif
23
24			#include <algorithm>
25			#include <vector>
26			#include <string>
27
28	gezelter	751	#include "config.h"
29	tim	741
30			using namespace std;
31			/*
32			OBAPI bool tokenize(vector<string> &, const char , const char );
33			OBAPI char trim_spaces(char string);
34			OBAPI bool tokenize(vector<string> &vcr, string &s, const char *delimstr,int limit=-1);
35			*/
36			namespace OpenBabel
37			{
38
39			//! Break a string (supplied as the second argument) into tokens, returned
40			//! in the first argument. Tokens are determined by the delimiters supplied
41			//! (defaults to whitespace (i.e., spaces, tabs, newlines)
42			OBAPI bool tokenize(vector<string> &vcr, const char buf, const char delimstr)
43			{
44			vcr.clear();
45			string s = buf;
46			s += "\n";
47			size_t startpos=0,endpos=0;
48
49			for (;;)
50			{
51			startpos = s.find_first_not_of(delimstr,startpos);
52			endpos = s.find_first_of(delimstr,startpos);
53
54			if (endpos <= s.size() && startpos <= s.size())
55			vcr.push_back(s.substr(startpos,endpos-startpos));
56			else
57			break;
58
59			startpos = endpos+1;
60			}
61
62			return(true);
63			}
64
65			//! Trim any trailing spaces at the end of the supplied string.
66			OBAPI char trim_spaces(char string)
67			{
68			int length;
69
70			length = strlen(string);
71			if (length == 0)
72			return string;
73
74			while ((length > 0) && (string[0] == ' '))
75			{
76			string++;
77			--length;
78			}
79
80			if (length > 0)
81			{
82			while ((length > 0) && (string[length-1] == ' '))
83			{
84			string[length-1] = '\0';
85			--length;
86			}
87			}
88
89			return(string);
90			}
91
92			//! Break a string (supplied as the second argument) into tokens, returned
93			//! in the first argument. Tokens are determined by the delimiters supplied
94			//! (defaults to whitespace (i.e., spaces, tabs, newlines)
95			//! Only breaks at most 'limit' tokens and the last item in the vector may
96			//! include un-parsed tokens.
97			OBAPI bool tokenize(vector<string> &vcr, string &s, const char *delimstr, int limit)
98			{
99			vcr.clear();
100			size_t startpos=0,endpos=0;
101
102			int matched=0;
103			unsigned int s_size = s.size();
104			for (;;)
105			{
106			startpos = s.find_first_not_of(delimstr,startpos);
107			endpos = s.find_first_of(delimstr,startpos);
108			if (endpos <= s_size && startpos <= s_size)
109			{
110			vcr.push_back(s.substr(startpos,endpos-startpos));
111
112			matched++;
113			if (matched == limit)
114			{
115			startpos = endpos+1;
116			vcr.push_back(s.substr(startpos,s_size));
117			break;
118			}
119			}
120			else
121			{
122			if (startpos < s_size)
123			vcr.push_back(s.substr(startpos,s_size-startpos));
124			break;
125			}
126
127			startpos = endpos+1;
128			}
129			return(true);
130			}
131
132			OBAPI void Trim(string& txt)
133			{
134			string::size_type pos = txt.find_last_not_of(" \t\n\r");
135			if(pos!=string::npos)
136			txt.erase(pos+1);
137			else
138			txt.erase();
139
140			pos = txt.find_first_not_of(" \t\n\r");
141			if(pos!=string::npos)
142			txt.erase(0, pos);
143			else
144			txt.erase();
145			}
146
147			} // end namespace OpenBabel
148
149			//! \file tokenst.cpp
150			//! \brief Tokenize a string.