3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef UTIL_STRING_HEADER
21 #define UTIL_STRING_HEADER
23 #include "irrlichttypes_bloated.h"
31 #define STRINGIFY(x) #x
32 #define TOSTRING(x) STRINGIFY(x)
40 // You must free the returned string!
41 // The returned string is allocated using new
42 wchar_t *narrow_to_wide_c(const char *str);
44 std::wstring narrow_to_wide(const std::string &mbs);
45 std::string wide_to_narrow(const std::wstring &wcs);
46 std::string translatePassword(const std::string &playername,
47 const std::string &password);
48 std::string urlencode(std::string str);
49 std::string urldecode(std::string str);
50 u32 readFlagString(std::string str, const FlagDesc *flagdesc, u32 *flagmask);
51 std::string writeFlagString(u32 flags, const FlagDesc *flagdesc, u32 flagmask);
52 size_t mystrlcpy(char *dst, const char *src, size_t size);
53 char *mystrtok_r(char *s, const char *sep, char **lasts);
54 u64 read_seed(const char *str);
55 bool parseColorString(const std::string &value, video::SColor &color, bool quiet);
59 * Returns a copy of \p str with spaces inserted at the right hand side to ensure
60 * that the string is \p len characters in length. If \p str is <= \p len then the
61 * returned string will be identical to str.
63 inline std::string padStringRight(std::string str, size_t len)
66 str.insert(str.end(), len - str.size(), ' ');
72 * Returns a version of \p str with the first occurrence of a string
73 * contained within ends[] removed from the end of the string.
76 * @param ends A NULL- or ""- terminated array of strings to remove from s in
77 * the copy produced. Note that once one of these strings is removed
78 * that no further postfixes contained within this array are removed.
80 * @return If no end could be removed then "" is returned.
82 inline std::string removeStringEnd(const std::string &str,
85 const char **p = ends;
87 for (; *p && (*p)[0] != '\0'; p++) {
89 if (str.size() < end.size())
91 if (str.compare(str.size() - end.size(), end.size(), end) == 0)
92 return str.substr(0, str.size() - end.size());
100 * Check two strings for equivalence. If \p case_insensitive is true
101 * then the case of the strings is ignored (default is false).
105 * @param case_insensitive
106 * @return true if the strings match
108 template <typename T>
109 inline bool str_equal(const std::basic_string<T> &s1,
110 const std::basic_string<T> &s2,
111 bool case_insensitive = false)
113 if (!case_insensitive)
116 if (s1.size() != s2.size())
119 for (size_t i = 0; i < s1.size(); ++i)
120 if(tolower(s1[i]) != tolower(s2[i]))
128 * Check whether \p str begins with the string prefix. If \p case_insensitive
129 * is true then the check is case insensitve (default is false; i.e. case is
134 * @param case_insensitive
135 * @return true if the str begins with prefix
137 template <typename T>
138 inline bool str_starts_with(const std::basic_string<T> &str,
139 const std::basic_string<T> &prefix,
140 bool case_insensitive = false)
142 if (str.size() < prefix.size())
145 if (!case_insensitive)
146 return str.compare(0, prefix.size(), prefix) == 0;
148 for (size_t i = 0; i < prefix.size(); ++i)
149 if (tolower(str[i]) != tolower(prefix[i]))
155 * Check whether \p str begins with the string prefix. If \p case_insensitive
156 * is true then the check is case insensitve (default is false; i.e. case is
161 * @param case_insensitive
162 * @return true if the str begins with prefix
164 template <typename T>
165 inline bool str_starts_with(const std::basic_string<T> &str,
167 bool case_insensitive = false)
169 return str_starts_with(str, std::basic_string<T>(prefix),
174 * Splits a string into its component parts separated by the character
177 * @return An std::vector<std::basic_string<T> > of the component parts
179 template <typename T>
180 inline std::vector<std::basic_string<T> > str_split(
181 const std::basic_string<T> &str,
184 std::vector<std::basic_string<T> > parts;
185 std::basic_stringstream<T> sstr(str);
186 std::basic_string<T> part;
188 while (std::getline(sstr, part, delimiter))
189 parts.push_back(part);
197 * @return A copy of \p str converted to all lowercase characters.
199 inline std::string lowercase(const std::string &str)
203 s2.reserve(str.size());
205 for (size_t i = 0; i < str.size(); i++)
206 s2 += tolower(str[i]);
214 * @return A copy of \p str with leading and trailing whitespace removed.
216 inline std::string trim(const std::string &str)
220 while (std::isspace(str[front]))
223 size_t back = str.size();
224 while (back > front && std::isspace(str[back - 1]))
227 return str.substr(front, back - front);
232 * Returns whether \p str should be regarded as (bool) true. Case and leading
233 * and trailing whitespace are ignored. Values that will return
234 * true are "y", "yes", "true" and any number that is not 0.
237 inline bool is_yes(const std::string &str)
239 std::string s2 = lowercase(trim(str));
241 return s2 == "y" || s2 == "yes" || s2 == "true" || atoi(s2.c_str()) != 0;
246 * Converts the string \p str to a signed 32-bit integer. The converted value
247 * is constrained so that min <= value <= max.
249 * @see atoi(3) for limitations
252 * @param min Range minimum
253 * @param max Range maximum
254 * @return The value converted to a signed 32-bit integer and constrained
255 * within the range defined by min and max (inclusive)
257 inline s32 mystoi(const std::string &str, s32 min, s32 max)
259 s32 i = atoi(str.c_str());
270 /// Returns a 64-bit value represented by the string \p str (decimal).
271 inline s64 stoi64(const std::string &str)
273 std::stringstream tmp(str);
279 // MSVC2010 includes it's own versions of these
280 //#if !defined(_MSC_VER) || _MSC_VER < 1600
284 * Returns a 32-bit value reprensented by the string \p str (decimal).
285 * @see atoi(3) for further limitations
287 inline s32 mystoi(const std::string &str)
289 return atoi(str.c_str());
294 * Returns s 32-bit value represented by the wide string \p str (decimal).
295 * @see atoi(3) for further limitations
297 inline s32 mystoi(const std::wstring &str)
299 return mystoi(wide_to_narrow(str));
304 * Returns a float reprensented by the string \p str (decimal).
307 inline float mystof(const std::string &str)
309 return atof(str.c_str());
317 // TODO: Replace with C++11 std::to_string.
319 /// Returns A string representing the value \p val.
320 template <typename T>
321 inline std::string to_string(T val)
323 std::ostringstream oss;
328 /// Returns a string representing the decimal value of the 32-bit value \p i.
329 inline std::string itos(s32 i) { return to_string(i); }
330 /// Returns a string representing the decimal value of the 64-bit value \p i.
331 inline std::string i64tos(s64 i) { return to_string(i); }
332 /// Returns a string representing the decimal value of the float value \p f.
333 inline std::string ftos(float f) { return to_string(f); }
337 * Replace all occurrences of \p pattern in \p str with \p replacement.
339 * @param str String to replace pattern with replacement within.
340 * @param pattern The pattern to replace.
341 * @param replacement What to replace the pattern with.
343 inline void str_replace(std::string &str, const std::string &pattern,
344 const std::string &replacement)
346 std::string::size_type start = str.find(pattern, 0);
347 while (start != str.npos) {
348 str.replace(start, pattern.size(), replacement);
349 start = str.find(pattern, start + replacement.size());
355 * Replace all occurrences of the character \p from in \p str with \p to.
357 * @param str The string to (potentially) modify.
358 * @param from The character in str to replace.
359 * @param to The replacement character.
361 void str_replace(std::string &str, char from, char to);
365 * Check that a string only contains whitelisted characters. This is the
366 * opposite of string_allowed_blacklist().
368 * @param str The string to be checked.
369 * @param allowed_chars A string containing permitted characters.
370 * @return true if the string is allowed, otherwise false.
372 * @see string_allowed_blacklist()
374 inline bool string_allowed(const std::string &str, const std::string &allowed_chars)
376 return str.find_first_not_of(allowed_chars) == str.npos;
381 * Check that a string contains no blacklisted characters. This is the
382 * opposite of string_allowed().
384 * @param str The string to be checked.
385 * @param blacklisted_chars A string containing prohibited characters.
386 * @return true if the string is allowed, otherwise false.
388 * @see string_allowed()
390 inline bool string_allowed_blacklist(const std::string &str,
391 const std::string &blacklisted_chars)
393 return str.find_first_of(blacklisted_chars) == str.npos;
398 * Create a string based on \p from where a newline is forcefully inserted
399 * every \p row_len characters.
401 * @note This function does not honour word wraps and blindy inserts a newline
402 * every \p row_len characters whether it breaks a word or not. It is
403 * intended to be used for, for example, showing paths in the GUI.
405 * @param from The string to be wrapped into rows.
406 * @param row_len The row length (in characters).
407 * @return A new string with the wrapping applied.
409 inline std::string wrap_rows(const std::string &from,
414 for (size_t i = 0; i < from.size(); i++) {
415 if (i != 0 && i % row_len == 0)
425 * Removes backslashes from an escaped string (FormSpec strings)
427 template <typename T>
428 inline std::basic_string<T> unescape_string(std::basic_string<T> &s)
430 std::basic_string<T> res;
432 for (size_t i = 0; i < s.length(); i++) {
446 * Checks that all characters in \p to_check are a decimal digits.
449 * @return true if to_check is not empty and all characters in to_check are
450 * decimal digits, otherwise false
452 inline bool is_number(const std::string &to_check)
454 for (size_t i = 0; i < to_check.size(); i++)
455 if (!std::isdigit(to_check[i]))
458 return !to_check.empty();
463 * Returns a C-string, either "true" or "false", corresponding to \p val.
465 * @return If \p val is true, then "true" is returned, otherwise "false".
467 inline const char *bool_to_cstr(bool val)
469 return val ? "true" : "false";