+/* $Id$
+
+This file is part of libmspstrings
+Copyright © 2006-2008 Mikko Rasa
+Distributed under the LGPL
+*/
+
+#include <algorithm>
+#include <list>
+#include <msp/core/except.h>
+#include "utils.h"
+
+using namespace std;
+
+namespace {
+
+template<bool long_sep, bool allow_empty>
+vector<string> do_split(const string &str, const string &sep, int max_split)
+{
+ vector<string> result;
+
+ unsigned start = 0;
+ while(start<str.size())
+ {
+ unsigned end = long_sep ? str.find(sep, start) : str.find_first_of(sep, start);
+ if(end!=start || allow_empty)
+ {
+ if(max_split>=0 && result.size()==static_cast<unsigned>(max_split))
+ {
+ result.push_back(str.substr(start));
+ break;
+ }
+ else
+ result.push_back(str.substr(start, end-start));
+ }
+
+ if(end>str.size())
+ break;
+
+ start = end+(long_sep ? sep.size() : 1);
+
+ if(allow_empty && start==str.size())
+ result.push_back(string());
+ }
+
+ return result;
+}
+
+bool check_str(const std::string &str, int (*pred)(int))
+{
+ for(string::const_iterator i=str.begin(); i!=str.end(); ++i)
+ if(!pred(*i))
+ return false;
+ return true;
+}
+
+}
+
+
+namespace Msp {
+
+int strcasecmp(const string &s1, const string &s2)
+{
+ string::const_iterator i1 = s1.begin();
+ string::const_iterator i2 = s2.begin();
+ for(; (i1!=s1.end() && i2!=s2.end()); ++i1, ++i2)
+ {
+ const char c1 = ::tolower(*i1);
+ const char c2 = ::tolower(*i2);
+ if(c1!=c2) return c1-c2;
+ }
+ if(i1!=s1.end()) return *i1;
+ if(i2!=s2.end()) return -*i2;
+ return 0;
+}
+
+string tolower(const string &str)
+{
+ string result(str);
+ transform(result.begin(), result.end(), result.begin(), ::tolower);
+ return result;
+}
+
+string toupper(const string &str)
+{
+ string result(str);
+ transform(result.begin(), result.end(), result.begin(), ::toupper);
+ return result;
+}
+
+bool isnumrc(const string &str)
+{
+ return check_str(str, isdigit);
+}
+
+bool isalpha(const string &str)
+{
+ return check_str(str, isalpha);
+}
+
+bool isalnum(const string &str)
+{
+ return check_str(str, isalnum);
+}
+
+vector<string> split(const string &str, const string &sep, int max_split)
+{
+ return do_split<false, false>(str, sep, max_split);
+}
+
+vector<string> split(const string &str, char sep, int max_split)
+{
+ return split(str, string(1, sep), max_split);
+}
+
+vector<string> split_long(const string &str, const string &sep, int max_split)
+{
+ return do_split<true, false>(str, sep, max_split);
+}
+
+vector<string> split_fields(const string &str, const string &sep, int max_split)
+{
+ return do_split<true, true>(str, sep, max_split);
+}
+
+vector<string> split_fields(const string &str, char sep, int max_split)
+{
+ return split_fields(str, string(1, sep), max_split);
+}
+
+string strip(const string &s)
+{
+ string result = s;
+ if(!result.erase(0, result.find_first_not_of(" \t\r\n")).empty())
+ result.erase(result.find_last_not_of(" \t\r\n")+1);
+ return result;
+}
+
+string c_unescape(const std::string &str)
+{
+ bool escape = false;
+ unsigned numeric_type = 0;
+ unsigned numeric_pos = 0;
+ unsigned numeric_value = 0;
+ string result;
+ for(string::const_iterator i=str.begin(); i!=str.end(); ++i)
+ {
+ if(numeric_type==16)
+ {
+ unsigned digit = 0;
+ if(*i>='0' && *i<='9')
+ digit = *i-'0';
+ else if(*i>='a' && *i<='f')
+ digit = *i-'a'+10;
+ else if(*i>='A' && *i<='F')
+ digit = *i-'A'+10;
+ else
+ throw InvalidParameterValue("Invalid hexadecimal digit");
+
+ numeric_value = (numeric_value<<4 | digit);
+ ++numeric_pos;
+ if(numeric_pos==2)
+ {
+ result += numeric_value;
+ numeric_type = 0;
+ }
+ }
+ else if(numeric_type==8)
+ {
+ unsigned digit = 0;
+ if(*i>='0' && *i<='7')
+ digit = *i-'0';
+ else
+ throw InvalidParameterValue("Invalid octal digit");
+
+ numeric_value = (numeric_value<<3 | digit);
+ ++numeric_pos;
+ if(numeric_pos==3)
+ {
+ result += numeric_value;
+ numeric_type = 0;
+ }
+ }
+ else if(escape)
+ {
+ if(*i=='x')
+ {
+ numeric_type = 16;
+ numeric_pos = 0;
+ numeric_value = 0;
+ }
+ else if(*i>='0' && *i<='3')
+ {
+ numeric_type = 8;
+ numeric_pos = 1;
+ numeric_value = *i-'0';
+ }
+ else if(*i=='n')
+ result += '\n';
+ else if(*i=='t')
+ result += '\t';
+ else if(*i=='r')
+ result += '\r';
+ else if(*i=='b')
+ result += '\b';
+ else if(*i=='v')
+ result += '\v';
+ else if(*i=='a')
+ result += '\a';
+ else if(*i=='f')
+ result += '\f';
+ else if(*i=='\"')
+ result += '\"';
+ else if(*i=='\'')
+ result += '\'';
+ else if(*i=='\\')
+ result += '\\';
+ else
+ throw InvalidParameterValue("Invalid escape sequence");
+
+ escape = false;
+ }
+ else if(*i=='\\')
+ escape = true;
+ else
+ result += *i;
+ }
+
+ if(escape)
+ throw InvalidParameterValue("Stray backslash at end of string");
+
+ return result;
+}
+
+string c_escape(const string &str, bool escape_8bit)
+{
+ string result;
+
+ for(string::const_iterator i=str.begin(); i!=str.end(); ++i)
+ {
+ if(*i=='\n')
+ result += "\\n";
+ else if(*i=='\t')
+ result += "\\t";
+ else if(*i=='\r')
+ result += "\\r";
+ else if(*i=='\b')
+ result += "\\b";
+ else if(*i=='\v')
+ result += "\\v";
+ else if(*i=='\a')
+ result += "\\a";
+ else if(*i=='\f')
+ result += "\\f";
+ else if(*i=='\"')
+ result += "\\\"";
+ else if(*i=='\'')
+ result += "\\\'";
+ else if(*i=='\\')
+ result += "\\\\";
+ else if(static_cast<unsigned char>(*i)<' ' || (escape_8bit && (*i&0x80)))
+ {
+ char buf[4] = {'\\', '0'+((*i>>6)&3), '0'+((*i>>3)&7), '0'+(*i&7)};
+ result.append(buf, 4);
+ }
+ else
+ result += *i;
+ }
+
+ return result;
+}
+
+} // namespace Msp
projects / libs / core.git / blobdiff