dolphin/Source/Core/Common/Src/StringUtil.cpp

245 lines
5.3 KiB
C++

// Copyright (C) 2003 Dolphin Project.
// 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 2.0.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include <stdlib.h>
#include <stdio.h>
#include "Common.h"
#include "CommonPaths.h"
#include "StringUtil.h"
// faster than sscanf
bool AsciiToHex(const char* _szValue, u32& result)
{
char *endptr = NULL;
const u32 value = strtoul(_szValue, &endptr, 16);
if (!endptr || *endptr)
return false;
result = value;
return true;
}
bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list args)
{
int writtenCount = vsnprintf(out, outsize, format, args);
if (writtenCount > 0 && writtenCount < outsize)
{
out[writtenCount] = '\0';
return true;
}
else
{
out[outsize - 1] = '\0';
return false;
}
}
std::string StringFromFormat(const char* format, ...)
{
va_list args;
char *buf = NULL;
#ifdef _WIN32
int required = 0;
va_start(args, format);
required = _vscprintf(format, args);
buf = new char[required + 1];
vsnprintf(buf, required, format, args);
va_end(args);
buf[required] = '\0';
std::string temp = buf;
delete[] buf;
#else
va_start(args, format);
vasprintf(&buf, format, args);
va_end(args);
std::string temp = buf;
free(buf);
#endif
return temp;
}
// For Debugging. Read out an u8 array.
std::string ArrayToString(const u8 *data, u32 size, int line_len, bool spaces)
{
std::ostringstream oss;
oss << std::setfill('0') << std::hex;
for (int line = 0; size; ++data, --size)
{
oss << std::setw(2) << (int)*data;
if (line_len == ++line)
{
oss << '\n';
line = 0;
}
else if (spaces)
oss << ' ';
}
return oss.str();
}
// Turns " hej " into "hej". Also handles tabs.
std::string StripSpaces(const std::string &str)
{
const size_t s = str.find_first_not_of(" \t\r\n");
if (str.npos != s)
return str.substr(s, str.find_last_not_of(" \t\r\n") - s + 1);
else
return "";
}
// "\"hello\"" is turned to "hello"
// This one assumes that the string has already been space stripped in both
// ends, as done by StripSpaces above, for example.
std::string StripQuotes(const std::string& s)
{
if (s.size() && '\"' == s[0] && '\"' == *s.rbegin())
return s.substr(1, s.size() - 2);
else
return s;
}
// "\"hello\"" is turned to "hello"
// This one assumes that the string has already been space stripped in both
// ends, as done by StripSpaces above, for example.
std::string StripNewline(const std::string& s)
{
if (s.size() && '\n' == *s.rbegin())
return s.substr(0, s.size() - 1);
else
return s;
}
bool TryParse(const std::string &str, u32 *const output)
{
char *endptr = NULL;
u32 value = strtoul(str.c_str(), &endptr, 0);
if (!endptr || *endptr)
return false;
*output = value;
return true;
}
bool TryParse(const std::string &str, bool *const output)
{
if ("1" == str || !strcasecmp("true", str.c_str()))
*output = true;
else if ("0" == str || !strcasecmp("false", str.c_str()))
*output = false;
else
return false;
return true;
}
std::string StringFromInt(int value)
{
char temp[16];
sprintf(temp, "%i", value);
return temp;
}
std::string StringFromBool(bool value)
{
return value ? "True" : "False";
}
bool SplitPath(const std::string& full_path, std::string* _pPath, std::string* _pFilename, std::string* _pExtension)
{
if (full_path.empty())
return false;
size_t dir_end = full_path.find_last_of("/"
// windows needs the : included for something like just "C:" to be considered a directory
#ifdef _WIN32
":"
#endif
);
if (std::string::npos == dir_end)
dir_end = 0;
else
dir_end += 1;
size_t fname_end = full_path.rfind('.');
if (fname_end < dir_end || std::string::npos == fname_end)
fname_end = full_path.size();
if (_pPath)
*_pPath = full_path.substr(0, dir_end);
if (_pFilename)
*_pFilename = full_path.substr(dir_end, fname_end - dir_end);
if (_pExtension)
*_pExtension = full_path.substr(fname_end);
return true;
}
std::string PathToFilename(const std::string &Path)
{
std::string Name, Ending;
SplitPath(Path, 0, &Name, &Ending);
return Name + Ending;
}
void BuildCompleteFilename(std::string& _CompleteFilename, const std::string& _Path, const std::string& _Filename)
{
_CompleteFilename = _Path;
// check for seperator
if (DIR_SEP_CHR != *_CompleteFilename.rbegin())
_CompleteFilename += DIR_SEP_CHR;
// add the filename
_CompleteFilename += _Filename;
}
void SplitString(const std::string& str, const char delim, std::vector<std::string>& output)
{
std::istringstream iss(str);
output.resize(1);
while (std::getline(iss, *output.rbegin(), delim))
output.push_back("");
output.pop_back();
}
std::string TabsToSpaces(int tab_size, const std::string &in)
{
const std::string spaces(tab_size, ' ');
std::string out(in);
size_t i = 0;
while (out.npos != (i = out.find('\t')))
out.replace(i, 1, spaces);
return out;
}