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)
39 std::wstring narrow_to_wide(const std::string& mbs);
40 std::string wide_to_narrow(const std::wstring& wcs);
41 std::string translatePassword(std::string playername, std::wstring password);
42 std::string urlencode(std::string str);
43 std::string urldecode(std::string str);
44 u32 readFlagString(std::string str, const FlagDesc *flagdesc, u32 *flagmask);
45 std::string writeFlagString(u32 flags, const FlagDesc *flagdesc, u32 flagmask);
46 size_t mystrlcpy(char *dst, const char *src, size_t size);
47 char *mystrtok_r(char *s, const char *sep, char **lasts);
48 u64 read_seed(const char *str);
49 bool parseColorString(const std::string &value, video::SColor &color, bool quiet);
53 * Returns a copy of \p str with spaces inserted at the right hand side to ensure
54 * that the string is \p len characters in length. If \p str is <= \p len then the
55 * returned string will be identical to str.
57 inline std::string padStringRight(std::string str, size_t len)
60 str.insert(str.end(), len - str.size(), ' ');
66 * Returns a version of \p str with the first occurrence of a string
67 * contained within ends[] removed from the end of the string.
70 * @param ends A NULL- or ""- terminated array of strings to remove from s in
71 * the copy produced. Note that once one of these strings is removed
72 * that no further postfixes contained within this array are removed.
74 * @return If no end could be removed then "" is returned.
76 inline std::string removeStringEnd(const std::string &str,
79 const char **p = ends;
81 for (; *p && (*p)[0] != '\0'; p++) {
83 if (str.size() < end.size())
85 if (str.compare(str.size() - end.size(), end.size(), end) == 0)
86 return str.substr(0, str.size() - end.size());
94 * Check two strings for equivalence. If \p case_insensitive is true
95 * then the case of the strings is ignored (default is false).
99 * @param case_insensitive
100 * @return true if the strings match
102 template <typename T>
103 inline bool str_equal(const std::basic_string<T> &s1,
104 const std::basic_string<T> &s2,
105 bool case_insensitive = false)
107 if (!case_insensitive)
110 if (s1.size() != s2.size())
113 for (size_t i = 0; i < s1.size(); ++i)
114 if(tolower(s1[i]) != tolower(s2[i]))
122 * Check whether \p str begins with the string prefix. If \p case_insensitive
123 * is true then the check is case insensitve (default is false; i.e. case is
128 * @param case_insensitive
129 * @return true if the str begins with prefix
131 template <typename T>
132 inline bool str_starts_with(const std::basic_string<T> &str,
133 const std::basic_string<T> &prefix,
134 bool case_insensitive = false)
136 if (str.size() < prefix.size())
139 if (!case_insensitive)
140 return str.compare(0, prefix.size(), prefix) == 0;
142 for (size_t i = 0; i < prefix.size(); ++i)
143 if (tolower(str[i]) != tolower(prefix[i]))
150 * Splits a string into its component parts separated by the character
153 * @return An std::vector<std::basic_string<T> > of the component parts
155 template <typename T>
156 inline std::vector<std::basic_string<T> > str_split(
157 const std::basic_string<T> &str,
160 std::vector<std::basic_string<T> > parts;
161 std::basic_stringstream<T> sstr(str);
162 std::basic_string<T> part;
164 while (std::getline(sstr, part, delimiter))
165 parts.push_back(part);
173 * @return A copy of \p str converted to all lowercase characters.
175 inline std::string lowercase(const std::string &str)
179 s2.reserve(str.size());
181 for (size_t i = 0; i < str.size(); i++)
182 s2 += tolower(str[i]);
190 * @return A copy of \p str with leading and trailing whitespace removed.
192 inline std::string trim(const std::string &str)
196 while (std::isspace(str[front]))
199 size_t back = str.size();
200 while (back > front && std::isspace(str[back - 1]))
203 return str.substr(front, back - front);
208 * Returns whether \p str should be regarded as (bool) true. Case and leading
209 * and trailing whitespace are ignored. Values that will return
210 * true are "y", "yes", "true" and any number that is not 0.
213 inline bool is_yes(const std::string &str)
215 std::string s2 = lowercase(trim(str));
217 return s2 == "y" || s2 == "yes" || s2 == "true" || atoi(s2.c_str()) != 0;
222 * Converts the string \p str to a signed 32-bit integer. The converted value
223 * is constrained so that min <= value <= max.
225 * @see atoi(3) for limitations
228 * @param min Range minimum
229 * @param max Range maximum
230 * @return The value converted to a signed 32-bit integer and constrained
231 * within the range defined by min and max (inclusive)
233 inline s32 mystoi(const std::string &str, s32 min, s32 max)
235 s32 i = atoi(str.c_str());
246 /// Returns a 64-bit value represented by the string \p str (decimal).
247 inline s64 stoi64(const std::string &str)
249 std::stringstream tmp(str);
255 // MSVC2010 includes it's own versions of these
256 //#if !defined(_MSC_VER) || _MSC_VER < 1600
260 * Returns a 32-bit value reprensented by the string \p str (decimal).
261 * @see atoi(3) for further limitations
263 inline s32 mystoi(const std::string &str)
265 return atoi(str.c_str());
270 * Returns s 32-bit value represented by the wide string \p str (decimal).
271 * @see atoi(3) for further limitations
273 inline s32 mystoi(const std::wstring &str)
275 return mystoi(wide_to_narrow(str));
280 * Returns a float reprensented by the string \p str (decimal).
283 inline float mystof(const std::string &str)
285 return atof(str.c_str());
293 // TODO: Replace with C++11 std::to_string.
295 /// Returns A string representing the value \p val.
296 template <typename T>
297 inline std::string to_string(T val)
299 std::ostringstream oss;
304 /// Returns a string representing the decimal value of the 32-bit value \p i.
305 inline std::string itos(s32 i) { return to_string(i); }
306 /// Returns a string representing the decimal value of the 64-bit value \p i.
307 inline std::string i64tos(s64 i) { return to_string(i); }
308 /// Returns a string representing the decimal value of the float value \p f.
309 inline std::string ftos(float f) { return to_string(f); }
313 * Replace all occurrences of \p pattern in \p str with \p replacement.
315 * @param str String to replace pattern with replacement within.
316 * @param pattern The pattern to replace.
317 * @param replacement What to replace the pattern with.
319 inline void str_replace(std::string &str, const std::string &pattern,
320 const std::string &replacement)
322 std::string::size_type start = str.find(pattern, 0);
323 while (start != str.npos) {
324 str.replace(start, pattern.size(), replacement);
325 start = str.find(pattern, start + replacement.size());
331 * Replace all occurrences of the character \p from in \p str with \p to.
333 * @param str The string to (potentially) modify.
334 * @param from The character in str to replace.
335 * @param to The replacement character.
337 void str_replace(std::string &str, char from, char to);
341 * Check that a string only contains whitelisted characters. This is the
342 * opposite of string_allowed_blacklist().
344 * @param str The string to be checked.
345 * @param allowed_chars A string containing permitted characters.
346 * @return true if the string is allowed, otherwise false.
348 * @see string_allowed_blacklist()
350 inline bool string_allowed(const std::string &str, const std::string &allowed_chars)
352 return str.find_first_not_of(allowed_chars) == str.npos;
357 * Check that a string contains no blacklisted characters. This is the
358 * opposite of string_allowed().
360 * @param str The string to be checked.
361 * @param blacklisted_chars A string containing prohibited characters.
362 * @return true if the string is allowed, otherwise false.
364 * @see string_allowed()
366 inline bool string_allowed_blacklist(const std::string &str,
367 const std::string &blacklisted_chars)
369 return str.find_first_of(blacklisted_chars) == str.npos;
374 * Create a string based on \p from where a newline is forcefully inserted
375 * every \p row_len characters.
377 * @note This function does not honour word wraps and blindy inserts a newline
378 * every \p row_len characters whether it breaks a word or not. It is
379 * intended to be used for, for example, showing paths in the GUI.
381 * @param from The string to be wrapped into rows.
382 * @param row_len The row length (in characters).
383 * @return A new string with the wrapping applied.
385 inline std::string wrap_rows(const std::string &from,
390 for (size_t i = 0; i < from.size(); i++) {
391 if (i != 0 && i % row_len == 0)
401 * Removes backslashes from an escaped string (FormSpec strings)
403 template <typename T>
404 inline std::basic_string<T> unescape_string(std::basic_string<T> &s)
406 std::basic_string<T> res;
408 for (size_t i = 0; i < s.length(); i++) {
422 * Checks that all characters in \p to_check are a decimal digits.
425 * @return true if to_check is not empty and all characters in to_check are
426 * decimal digits, otherwise false
428 inline bool is_number(const std::string &to_check)
430 for (size_t i = 0; i < to_check.size(); i++)
431 if (!std::isdigit(to_check[i]))
434 return !to_check.empty();
439 * Returns a C-string, either "true" or "false", corresponding to \p val.
441 * @return If \p val is true, then "true" is returned, otherwise "false".
443 inline const char *bool_to_cstr(bool val)
445 return val ? "true" : "false";