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// StringUtil.cc for fluxbox
// Copyright (c) 2001 - 2003 Henrik Kinnunen (fluxgen<at>linuxmail.org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// $Id: StringUtil.cc,v 1.8 2003/10/25 22:06:53 fluxgen Exp $
#include "StringUtil.hh"
#include <string>
#include <cstdio>
#include <cstdlib>
#include <cctype>
#include <cassert>
#include <memory>
#include <algorithm>
using namespace std;
namespace FbTk {
namespace StringUtil {
/**
Takes a pointer to string *s as an argument,
creates a new string n, copies s to n and
returns a pointer to n.
*/
char *strdup(const char *s) {
int l = strlen(s) + 1;
char *n = new char[l];
strncpy(n, s, l);
return n;
}
/**
Tries to find a string in another and
ignoring the case of the characters
Returns 0 on success else pointer to str.
*/
const char *strcasestr(const char *str, const char *ptn) {
const char *s2, *p2;
for( ; *str; str++) {
for(s2=str, p2=ptn; ; s2++,p2++) {
// check if we reached the end of ptn, if so, return str
if (!*p2)
return str;
// check if the chars match(ignoring case)
if (toupper(*s2) != toupper(*p2))
break;
}
}
return 0;
}
/**
if ~ then expand it to home of user
returns expanded filename
*/
string expandFilename(const std::string &filename) {
string retval;
size_t pos = filename.find_first_not_of(" \t");
if (pos != std::string::npos && filename[pos] == '~') {
retval = getenv("HOME");
if (pos != filename.size()) {
// copy from the character after '~'
retval += static_cast<const char *>(filename.c_str() + pos + 1);
}
} else
return filename; //return unmodified value
return retval;
}
/**
@return string from last "." to end of string
*/
string findExtension(const std::string &filename) {
//get start of extension
std::string::size_type start_pos = filename.find_last_of(".");
if (start_pos == std::string::npos && start_pos != filename.size())
return "";
// return from last . to end of string
return filename.substr(start_pos + 1);
}
/**
Parses a string between "first" and "last" characters
and ignoring ok_chars as whitespaces. The value is
returned in "out".
Returns negative value on error and this value is the position
in the in-string where the error occured.
Returns positive value on success and this value is
for the position + 1 in the in-string where the "last"-char value
was found.
*/
int getStringBetween(std::string& out, const char *instr, const char first, const char last,
const char *ok_chars, bool allow_nesting) {
assert(first);
assert(last);
assert(instr);
std::string::size_type i = 0,
total_add=0; //used to add extra if there is a \last to skip
std::string in(instr);
// eat leading whitespace
i = in.find_first_not_of(ok_chars);
if (i == std::string::npos)
return -in.size(); // nothing left but whitespace
if (in[i]!=first)
return -i; //return position to error
// find the end of the token
std::string::size_type j = i, k;
int nesting = 0;
while (1) {
k = in.find_first_of(first, j+1);
j = in.find_first_of(last, j+1);
if (j==std::string::npos)
return -in.size(); //send negative size
if (allow_nesting && k < j && in[k-1] != '\\') {
nesting++;
j = k;
continue;
}
//we found the last char, check so it doesn't have a '\' before
if (j>1 && in[j-1] != '\\') {
if (allow_nesting && nesting > 0) nesting--;
else
break;
} else if (j>1 && !allow_nesting) { // we leave escapes if we're allowing nesting
in.erase(j-1, 1); //remove the '\'
j--;
total_add++; //save numchars removed so we can calculate totalpos
}
}
out = in.substr(i+1, j-i-1); //copy the string between first and last
//return value to last character
return (j+1+total_add);
}
std::string toLower(const std::string &conv) {
std::string ret = conv;
std::transform(ret.begin(), ret.end(), ret.begin(), tolower);
return ret;
}
std::string toUpper(const std::string &conv) {
std::string ret = conv;
std::transform(ret.begin(), ret.end(), ret.begin(), toupper);
return ret;
}
std::string basename(const std::string &filename) {
std::string::size_type first_pos = filename.find_last_of("/");
if (first_pos != std::string::npos)
return filename.substr(first_pos + 1);
return filename;
}
string::size_type removeFirstWhitespace(std::string &str) {
string::size_type first_pos = str.find_first_not_of(" \t");
if (first_pos != string::npos)
str.erase(0, first_pos);
return first_pos;
}
string::size_type removeTrailingWhitespace(std::string &str) {
// strip trailing whitespace
string::size_type first_pos = str.find_first_not_of(" \t");
if (first_pos != string::npos) {
string::size_type last_pos = str.find_first_of(" \t", first_pos);
while (last_pos != string::npos) {
str.erase(last_pos);
last_pos = str.find_first_of(" \t", last_pos);
}
}
}
}; // end namespace StringUtil
}; // end namespace FbTk
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