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/* bzflag
* Copyright (c) 1993-2025 Tim Riker
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the license found in the file
* named COPYING that should have accompanied this file.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
// interface header
#include "SimpleTextUtils.h"
// system headers
#include <sstream>
namespace SimpleTextUtils
{
std::string vformat(const char* fmt, va_list args)
{
const int fixedbs = 8192;
char buffer[fixedbs];
const int bs = vsnprintf(buffer, fixedbs, fmt, args) + 1;
if (bs > fixedbs)
{
char *bufp = new char[bs];
vsnprintf(bufp, bs, fmt, args);
std::string ret = bufp;
delete[] bufp;
return ret;
}
return buffer;
}
std::string format(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
std::string result = vformat(fmt, args);
va_end(args);
return result;
}
std::string replace_all(const std::string& in, const std::string& replaceMe, const std::string& withMe)
{
std::string::size_type beginPos = 0;
std::string::size_type endPos = 0;
std::ostringstream tempStream;
endPos = in.find(replaceMe);
if (endPos == std::string::npos)
return in; // can't find anything to replace
if (replaceMe.empty()) return in; // can't replace nothing with something -- can do reverse
while (endPos != std::string::npos)
{
// push the part up to
tempStream << in.substr(beginPos,endPos-beginPos);
tempStream << withMe;
beginPos = endPos + replaceMe.size();
endPos = in.find(replaceMe,beginPos);
}
tempStream << in.substr(beginPos);
return tempStream.str();
}
std::vector<std::string> tokenize(const std::string& in, const std::string &delims, const int maxTokens,
const bool useQuotes)
{
std::vector<std::string> tokens;
int numTokens = 0;
bool inQuote = false;
std::ostringstream currentToken;
const std::string::size_type len = in.size();
std::string::size_type pos = in.find_first_not_of(delims);
int currentChar = (pos == std::string::npos) ? -1 : in[pos];
bool enoughTokens = (maxTokens && (numTokens >= (maxTokens-1)));
while (pos < len && pos != std::string::npos && !enoughTokens)
{
// get next token
bool tokenDone = false;
bool foundSlash = false;
currentChar = (pos < len) ? in[pos] : -1;
while ((currentChar != -1) && !tokenDone)
{
tokenDone = false;
if (delims.find(currentChar) != std::string::npos && !inQuote) // currentChar is a delim
{
pos ++;
break; // breaks out of inner while loop
}
if (!useQuotes)
currentToken << char(currentChar);
else
{
switch (currentChar)
{
case '\\' : // found a backslash
if (foundSlash)
{
currentToken << char(currentChar);
foundSlash = false;
}
else
foundSlash = true;
break;
case '\"' : // found a quote
if (foundSlash) // found \"
{
currentToken << char(currentChar);
foundSlash = false;
}
else // found unescaped "
{
if (inQuote) // exiting a quote
{
// finish off current token
tokenDone = true;
inQuote = false;
//slurp off one additional delimeter if possible
if (pos+1 < len &&
delims.find(in[pos+1]) != std::string::npos)
pos++;
}
else // entering a quote
{
// finish off current token
tokenDone = true;
inQuote = true;
}
}
break;
default:
if (foundSlash) // don't care about slashes except for above cases
{
currentToken << '\\';
foundSlash = false;
}
currentToken << char(currentChar);
break;
}
}
pos++;
currentChar = (pos < len) ? in[pos] : -1;
} // end of getting a Token
if (currentToken.str().size() > 0) // if the token is something add to list
{
tokens.push_back(currentToken.str());
currentToken.str("");
numTokens ++;
}
enoughTokens = (maxTokens && (numTokens >= (maxTokens-1)));
if ((pos < len) && (pos != std::string::npos))
pos = in.find_first_not_of(delims,pos);
} // end of getting all tokens -- either EOL or max tokens reached
if (enoughTokens && pos != std::string::npos)
{
std::string lastToken = in.substr(pos);
if (lastToken.size() > 0)
tokens.push_back(lastToken);
}
return tokens;
}
}
// Local Variables: ***
// mode: C++ ***
// tab-width: 4 ***
// c-basic-offset: 4 ***
// indent-tabs-mode: nil ***
// End: ***
// ex: shiftwidth=4 tabstop=4
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