3 /** This is a collection of string helper functions that works
4 together with string (and later also with STL String. Some of these
5 would certainly benefit from a rewrite/optimization.
13 //#warning verify this please. Lgb
16 size_t lstrlen(T const * t)
18 Assert(t); // we don't want null pointers
21 while(*r != 0) ++r, ++count;
26 //#warning verify this please. Lgb
29 T * lstrchr(T const * t, int c)
31 Assert(t); // we don't want null pointers
32 T * r = const_cast<T*>(t);
34 if (*r == c) return r; else ++r;
43 inline int compare_no_case(string const & s, string const & s2)
46 string::const_iterator p = s.begin();
47 string::const_iterator p2 = s2.begin();
49 while (p != s.end() && p2 != s2.end()) {
50 if (tolower(*p) != tolower(*p2))
51 return (tolower(*p) < tolower(*p2)) ? -1 : 1;
56 return s.size() - s2.size();
61 inline int compare_no_case(string const & s, string const & s2,
64 //#warning verify this func please
65 string::const_iterator p = s.begin();
66 string::const_iterator p2 = s2.begin();
68 while (i < len && p != s.end() && p2 != s2.end()) {
69 if (tolower(*p) != tolower(*p2))
70 return (tolower(*p) < tolower(*p2)) ? -1 : 1;
75 return s.size() - s2.size();
80 inline int compare(char const * a, char const * b)
87 inline int compare(char const * a, char const * b, unsigned int len)
89 return strncmp(a, b, len);
94 bool isStrInt(string const & str);
97 int strToInt(string const & str);
100 string lowercase(string const &);
103 string uppercase(string const &);
109 string tostr(unsigned int);
112 string tostr(long l);
115 string tostr(unsigned long l);
118 string tostr(char c);
121 string tostr(void * v);
124 string tostr(bool b);
127 string tostr(double d);
129 /// Does the string start with this prefix?
130 bool prefixIs(string const &, char const *);
132 /// Does the string end with this char?
133 bool suffixIs(string const &, char);
135 /// Does the string end with this suffix?
136 bool suffixIs(string const &, char const *);
139 bool contains(char const * a, string const & b);
142 bool contains(string const & a, char const * b);
145 bool contains(string const & a, string const & b);
148 bool contains(char const * a, char const * b);
150 /// Counts how many of character c there is in a
151 int countChar(string const & a, char const c);
153 /** Extracts a token from this string at the nth delim.
154 Doesn't modify the original string. Similar to strtok.
156 #"a;bc;d".token(';', 1) == "bc";#
157 #"a;bc;d".token(';', 2) == "d";#
159 string token(string const & a, char delim, int n);
162 /** Search a token in this string using the delim.
163 Doesn't modify the original string. Returns -1 in case of
166 #"a;bc;d".tokenPos(';', "bc") == 1;#
167 #"a;bc;d".token(';', "d") == 2;#
169 int tokenPos(string const & a, char delim, string const & tok);
172 /** Compares a string and a (simple) regular expression
173 The only element allowed is "*" for any string of characters
175 bool regexMatch(string const & a, string const & pattern);
177 /// Substitute all "oldchar"s with "newchar"
178 string subst(string const & a, char oldchar, char newchar);
180 /// Substitutes all instances of oldstr with newstr
181 string subst(string const & a,
182 char const * oldstr, string const & newstr);
184 /** Strips characters off the end of a string.
185 #"abccc".strip('c') = "ab".#
187 string strip(string const & a, char const c = ' ');
189 /** Strips characters of the beginning of a string.
190 #"cccba".frontstrip('c') = "ba"#. */
191 string frontStrip(string const & a, char const c = ' ');
193 /** Strips characters off the beginning of a string.
194 #"ababcdef".frontstrip("ab") = "cdef"# .*/
195 string frontStrip(string const & a, char const * p);
197 /** Splits the string by the first delim.
198 Splits the string by the first appearance of delim.
199 The leading string up to delim is returned in piece (not including
200 delim), while the original string is cut from after the delimiter.
202 #s1= ""; s2= "a;bc".split(s1, ';') -> s1 == "a"; s2 == "bc";#
204 string split(string const & a, string & piece, char delim);
206 /// Same as split but does not return a piece
207 string split(string const & a, char delim);
209 /// Same as split but uses the last delim.
210 string rsplit(string const & a, string & piece, char delim);