// 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 1.10 2004/02/28 10:46:02 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_last_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); } } return first_pos; } }; // end namespace StringUtil }; // end namespace FbTk