// StringUtil.cc for fluxbox // Copyright (c) 2001 - 2002 Henrik Kinnunen (fluxgen@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 1.11 2002/08/14 22:43:30 fluxgen Exp $ #include "StringUtil.hh" #include <string> #include <cstdio> #include <cstdlib> #include <cctype> #include <cassert> #include <memory> using namespace std; namespace StringUtil { //------- strdup ------------------------ // 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; } //------- strcasestr -------------- // 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++) { if (!*p2) return str; // check if we reached the end of ptn, if so, return str if (toupper(*s2) != toupper(*p2)) break; // check if the chars match(ignoring case) } } return 0; } //------------- expandFilename ---------------------- // 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; } //------------- getStringBetween ----------- // 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) { 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; while (1) { j = in.find_first_of(last, j+1); if (j==std::string::npos) return -in.size(); //send negative size //we found the last char, check so it doesn't have a '\' before if (j>1 && in[j-1] != '\\') break; else if (j>1) { 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); } }; //end namespace StringUtil