4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Lars Gullik Bjønnes
8 * \author Jean-Marc Lasgouttes
10 * Full author contact details are available in file CREDITS.
12 * A collection of string helper functions that works with string.
13 * Some of these would certainly benefit from a rewrite/optimization.
19 #include "support/docstring.h"
28 int compare_no_case(std::string const & s, std::string const & s2);
29 int compare_no_case(docstring const & s, docstring const & s2);
32 int compare_ascii_no_case(std::string const & s, std::string const & s2);
35 int compare_ascii_no_case(docstring const & s, docstring const & s2);
38 int compare_no_case(std::string const & s, std::string const & s2, unsigned int len);
42 int compare(char const * a, char const * b)
44 #ifndef CXX_GLOBAL_CSTD
45 return std::strcmp(a, b);
53 int compare(char const * a, char const * b, unsigned int len)
55 #ifndef CXX_GLOBAL_CSTD
56 return std::strncmp(a, b, len);
58 return strncmp(a, b, len);
63 bool isStrInt(std::string const & str);
65 /// does the std::string represent an unsigned integer value ?
66 bool isStrUnsignedInt(std::string const & str);
69 bool isStrDbl(std::string const & str);
72 char lowercase(char c);
75 char uppercase(char c);
77 /// changes the case only if c is a one-byte char
78 char_type lowercase(char_type c);
80 /// changes the case only if c is a one-byte char
81 char_type uppercase(char_type c);
83 /// same as lowercase(), but ignores locale
84 std::string const ascii_lowercase(std::string const &);
87 std::string const lowercase(std::string const &);
90 std::string const uppercase(std::string const &);
92 /// Does the std::string start with this prefix?
93 bool prefixIs(std::string const &, std::string const &);
94 bool prefixIs(lyx::docstring const &, lyx::docstring const &);
96 /// Does the string end with this char?
97 bool suffixIs(std::string const &, char);
99 /// Does the std::string end with this suffix?
100 bool suffixIs(std::string const &, std::string const &);
103 inline bool contains(std::string const & a, std::string const & b)
105 return a.find(b) != std::string::npos;
108 inline bool contains(docstring const & a, docstring const & b)
110 return a.find(b) != docstring::npos;
113 inline bool contains(std::string const & a, char b)
115 return a.find(b) != std::string::npos;
118 inline bool contains(docstring const & a, char_type b)
120 return a.find(b) != docstring::npos;
124 bool containsOnly(std::string const &, std::string const &);
126 /** Extracts a token from this string at the nth delim.
127 Doesn't modify the original string. Similar to strtok.
130 token("a;bc;d", ';', 1) == "bc";
131 token("a;bc;d", ';', 2) == "d";
134 std::string const token(std::string const & a, char delim, int n);
136 docstring const token(docstring const & a, char_type delim, int n);
138 /** Search a token in this string using the delim.
139 Doesn't modify the original string. Returns -1 in case of
143 tokenPos("a;bc;d", ';', "bc") == 1;
144 tokenPos("a;bc;d", ';', "d") == 2;
147 int tokenPos(std::string const & a, char delim, std::string const & tok);
150 /// Substitute all \a oldchar with \a newchar
151 std::string const subst(std::string const & a, char oldchar, char newchar);
153 /// Substitute all \a oldchar with \a newchar
154 docstring const subst(docstring const & a, char_type oldchar, char_type newchar);
156 /// substitutes all instances of \a oldstr with \a newstr
157 std::string const subst(std::string const & a,
158 std::string const & oldstr, std::string const & newstr);
160 /// substitutes all instances of \a oldstr with \a newstr
161 docstring const subst(docstring const & a,
162 docstring const & oldstr, docstring const & newstr);
164 /** Trims characters off the end and beginning of a string.
166 trim("ccabccc", "c") == "ab".
169 docstring const trim(docstring const & a, char const * p = " ");
171 /** Trims characters off the end and beginning of a string.
173 trim("ccabccc", "c") == "ab".
176 std::string const trim(std::string const & a, char const * p = " ");
178 /** Trims characters off the end of a string.
180 rtrim("abccc", "c") == "ab".
183 std::string const rtrim(std::string const & a, char const * p = " ");
184 docstring const rtrim(docstring const & a, char const * p = " ");
186 /** Trims characters off the beginning of a string.
188 ("ababcdef", "ab") = "cdef"
191 std::string const ltrim(std::string const & a, char const * p = " ");
192 docstring const ltrim(docstring const & a, char const * p = " ");
194 /** Splits the string by the first delim.
195 Splits the string by the first appearance of delim.
196 The leading string up to delim is returned in piece (not including
197 delim), while the original string is cut from after the delimiter.
200 s1= ""; s2= "a;bc".split(s1, ';') -> s1 == "a"; s2 == "bc";
203 std::string const split(std::string const & a, std::string & piece, char delim);
204 docstring const split(docstring const & a, docstring & piece, char_type delim);
206 /// Same as split but does not return a piece
207 std::string const split(std::string const & a, char delim);
209 /// Same as split but uses the last delim.
210 std::string const rsplit(std::string const & a, std::string & piece, char delim);
212 /// Escapes non ASCII chars
213 docstring const escape(docstring const & lab);
215 /// gives a vector of stringparts which have the delimiter delim
216 std::vector<std::string> const getVectorFromString(std::string const & str,
217 std::string const & delim = std::string(","));
219 // the same vice versa
220 std::string const getStringFromVector(std::vector<std::string> const & vec,
221 std::string const & delim = std::string(","));
223 /// Search \p search_token in \p str and return the position if it is
224 /// found, else -1. The last item in \p str must be "".
225 int findToken(char const * const str[], std::string const & search_token);
227 /// Convert internal line endings to line endings as expected by the OS
228 docstring const externalLineEnding(docstring const & str);
230 /// Convert line endings in any formnat to internal line endings
231 docstring const internalLineEnding(docstring const & str);
234 #ifdef I_AM_NOT_AFRAID_OF_HEADER_LIBRARIES
236 #include <boost/format.hpp>
239 docstring bformat(docstring const & fmt, Arg1 arg1)
241 return (boost::basic_format<char_type>(fmt) % arg1).str();
245 template<class Arg1, class Arg2>
246 docstring bformat(docstring const & fmt, Arg1 arg1, Arg2 arg2)
248 return (boost::basic_format<char_type>(fmt) % arg1 % arg2).str();
252 template<class Arg1, class Arg2, class Arg3>
253 docstring bformat(docstring const & fmt, Arg1 arg1, Arg2 arg2, Arg3 arg3)
255 return (boost::basic_format<char_type>(fmt) % arg1 % arg2 % arg3).str();
259 template<class Arg1, class Arg2, class Arg3, class Arg4>
260 docstring bformat(docstring const & fmt, Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4)
262 return (boost::basic_format<char_type>(fmt) % arg1 % arg2 % arg3 % arg4).str();
267 template <class Arg1>
268 docstring bformat(docstring const & fmt, Arg1);
270 template <class Arg1, class Arg2>
271 docstring bformat(docstring const & fmt, Arg1, Arg2);
273 template <class Arg1, class Arg2, class Arg3>
274 docstring bformat(docstring const & fmt, Arg1, Arg2, Arg3);
276 template <class Arg1, class Arg2, class Arg3, class Arg4>
277 docstring bformat(docstring const & fmt, Arg1, Arg2, Arg3, Arg4);
281 } // namespace support