4 This is a collection of string helper functions that works
5 together with string (and later also with STL String. Some of these
6 would certainly benefit from a rewrite/optimization.
25 int compare_no_case(string const & s, string const & s2);
28 int compare_no_case(string const & s, string const & s2, unsigned int len);
32 int compare(char const * a, char const * b)
39 int compare(char const * a, char const * b, unsigned int len)
41 return strncmp(a, b, len);
45 bool isStrInt(string const & str);
48 int strToInt(string const & str);
51 bool isStrDbl(string const & str);
54 double strToDbl(string const & str);
57 char lowercase(char c);
60 char uppercase(char c);
63 string const lowercase(string const &);
66 string const uppercase(string const &);
68 /// convert T to string
71 string const tostr(T const & t)
75 return ostr.str().c_str();
76 // We need to use the .c_str since we sometimes are using
77 // our own string class and that is not compatible with
78 // basic_string<char>. (of course we don't want this later)
85 string const tostr(bool const & b)
87 return (b ? "true" : "false");
90 /// Does the string start with this prefix?
91 bool prefixIs(string const &, char const *);
93 /// Does the string start with this prefix?
94 bool prefixIs(string const &, string const &);
96 /// Does the string end with this char?
97 bool suffixIs(string const &, char);
99 /// Does the string end with this suffix?
100 bool suffixIs(string const &, char const *);
102 /// Does the string end with this suffix?
103 bool suffixIs(string const &, string const &);
106 bool contains(char const * a, string const & b);
109 bool contains(string const & a, char const * b);
112 bool contains(string const & a, string const & b);
115 bool contains(char const * a, char const * b);
118 bool containsOnly(string const &, char const *);
121 bool containsOnly(string const &, string const &);
124 bool containsOnly(char const *, char const *);
127 bool containsOnly(char const *, string const &);
129 /// Counts how many of character c there is in a
130 string::size_type countChar(string const & a, char c);
132 /** Extracts a token from this string at the nth delim.
133 Doesn't modify the original string. Similar to strtok.
135 #"a;bc;d".token(';', 1) == "bc";#
136 #"a;bc;d".token(';', 2) == "d";#
138 string const token(string const & a, char delim, int n);
141 /** Search a token in this string using the delim.
142 Doesn't modify the original string. Returns -1 in case of
145 #"a;bc;d".tokenPos(';', "bc") == 1;#
146 #"a;bc;d".token(';', "d") == 2;#
148 int tokenPos(string const & a, char delim, string const & tok);
151 /** Compares a string and a (simple) regular expression
152 The only element allowed is "*" for any string of characters
154 bool regexMatch(string const & a, string const & pattern);
156 /// Substitute all "oldchar"s with "newchar"
157 string const subst(string const & a, char oldchar, char newchar);
159 /// Substitutes all instances of oldstr with newstr
160 string const subst(string const & a,
161 char const * oldstr, string const & newstr);
163 /// substitutes all instances ofr oldstr with newstr
164 string const subst(string const & a,
165 string const & oldstr, string const & newstr);
167 /** Strips characters off the end of a string.
168 #"abccc".strip('c') = "ab".#
170 string const strip(string const & a, char c = ' ');
172 /** Strips characters of the beginning of a string.
173 #"cccba".frontstrip('c') = "ba"#. */
174 string const frontStrip(string const & a, char c = ' ');
176 /** Strips characters off the beginning of a string.
177 #"ababcdef".frontstrip("ab") = "cdef"# .*/
178 string const frontStrip(string const & a, char const * p);
180 /** Splits the string by the first delim.
181 Splits the string by the first appearance of delim.
182 The leading string up to delim is returned in piece (not including
183 delim), while the original string is cut from after the delimiter.
185 #s1= ""; s2= "a;bc".split(s1, ';') -> s1 == "a"; s2 == "bc";#
187 string const split(string const & a, string & piece, char delim);
189 /// Same as split but does not return a piece
190 string const split(string const & a, char delim);
192 /// Same as split but uses the last delim.
193 string const rsplit(string const & a, string & piece, char delim);