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;
42 inline int compare_no_case(string const & s, string const & s2)
45 string::const_iterator p = s.begin();
46 string::const_iterator p2 = s2.begin();
48 while (p != s.end() && p2 != s2.end()) {
49 if (tolower(*p) != tolower(*p2))
50 return (tolower(*p) < tolower(*p2)) ? -1 : 1;
55 return s.size() - s2.size();
59 inline int compare_no_case(string const & s, string const & s2,
62 //#warning verify this func please
63 string::const_iterator p = s.begin();
64 string::const_iterator p2 = s2.begin();
66 while (i < len && p != s.end() && p2 != s2.end()) {
67 if (tolower(*p) != tolower(*p2))
68 return (tolower(*p) < tolower(*p2)) ? -1 : 1;
73 return s.size() - s2.size();
77 inline int compare(char const * a, char const * b)
83 inline int compare(char const * a, char const * b, unsigned int len)
85 return strncmp(a, b, len);
89 bool isStrInt(string const & str);
92 int strToInt(string const & str);
95 string lowercase(string const &);
101 string tostr(unsigned int);
104 string tostr(long l);
107 string tostr(unsigned long l);
110 string tostr(char c);
113 string tostr(void* v);
116 string tostr(bool b);
119 string tostr(double d);
121 /// Does the string start with this prefix?
122 bool prefixIs(string const &, char const *);
124 /// Does the string end with this char?
125 bool suffixIs(string const &, char);
127 /// Does the string end with this suffix?
128 bool suffixIs(string const &, char const *);
131 bool contains(char const * a, string const & b);
134 bool contains(string const & a, char const * b);
137 bool contains(string const & a, string const & b);
140 bool contains(char const * a, char const * b);
142 /// Counts how many of character c there is in a
143 int countChar(string const & a, char const c);
145 /** Extracts a token from this string at the nth delim.
146 Doesn't modify the original string. Similar to strtok.
148 #"a;bc;d".token(';', 1) == "bc";#
149 #"a;bc;d".token(';', 2) == "d";#
151 string token(string const & a, char delim, int n);
154 /** Search a token in this string using the delim.
155 Doesn't modify the original string. Returns -1 in case of
158 #"a;bc;d".tokenPos(';', "bc") == 1;#
159 #"a;bc;d".token(';', "d") == 2;#
161 int tokenPos(string const & a, char delim, string const & tok);
164 /** Compares a string and a (simple) regular expression
165 The only element allowed is "*" for any string of characters
167 bool regexMatch(string const & a, string const & pattern);
169 /// Substitute all "oldchar"s with "newchar"
170 string subst(string const & a, char oldchar, char newchar);
172 /// Substitutes all instances of oldstr with newstr
173 string subst(string const & a,
174 char const * oldstr, string const & newstr);
176 /** Strips characters off the end of a string.
177 #"abccc".strip('c') = "ab".#
179 string strip(string const & a, char const c = ' ');
181 /** Strips characters of the beginning of a string.
182 #"cccba".frontstrip('c') = "ba"#. */
183 string frontStrip(string const & a, char const c = ' ');
185 /** Strips characters off the beginning of a string.
186 #"ababcdef".frontstrip("ab") = "cdef"# .*/
187 string frontStrip(string const & a, char const * p);
189 /** Splits the string by the first delim.
190 Splits the string by the first appearance of delim.
191 The leading string up to delim is returned in piece (not including
192 delim), while the original string is cut from after the delimiter.
194 #s1=""; s2="a;bc".split(s1, ';') -> s1=="a"; s2 == "bc";#
196 string split(string const & a, string & piece, char delim);
198 /// Same as split but does not return a piece
199 string split(string const & a, char delim);
201 /// Same as split but uses the last delim.
202 string rsplit(string const & a, string & piece, char delim);