comparison: sources/format.h
sources/format.h
- changeset 1
- 4dd5bde4e777
- child 5
- 146825d63b9a
equal
deleted
inserted
replaced
| 0:792876306489 | 1:4dd5bde4e777 |
|---|---|
| 1 /* | |
| 2 Copyright 2014 Teemu Piippo | |
| 3 All rights reserved. | |
| 4 | |
| 5 Redistribution and use in source and binary forms, with or without | |
| 6 modification, are permitted provided that the following conditions | |
| 7 are met: | |
| 8 | |
| 9 1. Redistributions of source code must retain the above copyright | |
| 10 notice, this list of conditions and the following disclaimer. | |
| 11 2. Redistributions in binary form must reproduce the above copyright | |
| 12 notice, this list of conditions and the following disclaimer in the | |
| 13 documentation and/or other materials provided with the distribution. | |
| 14 3. Neither the name of the copyright holder nor the names of its | |
| 15 contributors may be used to endorse or promote products derived from | |
| 16 this software without specific prior written permission. | |
| 17 | |
| 18 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 20 TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 21 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER | |
| 22 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 23 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 24 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 25 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 26 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 27 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "mystring.h" | |
| 32 #include "basics.h" | |
| 33 #include "geometry.h" | |
| 34 | |
| 35 #define FORMAT_OVERLOAD(T) \ | |
| 36 inline FUNCTION make_format_argument (T a) -> String | |
| 37 | |
| 38 // | |
| 39 // ------------------------------------------------------------------------------------------------- | |
| 40 // | |
| 41 | |
| 42 FORMAT_OVERLOAD (String) { return a; } | |
| 43 FORMAT_OVERLOAD (char) { return String (a); } | |
| 44 FORMAT_OVERLOAD (int) { return String::from_number (a); } | |
| 45 FORMAT_OVERLOAD (long int) { return String::from_number (a); } | |
| 46 FORMAT_OVERLOAD (double) { return String::from_number (a); } | |
| 47 FORMAT_OVERLOAD (size_t) { return String::from_number (a); } | |
| 48 FORMAT_OVERLOAD (const char*) { return a; } | |
| 49 FORMAT_OVERLOAD (std::nullptr_t) { (void) a; return "<null pointer>"; } | |
| 50 FORMAT_OVERLOAD (bool) { return a ? "true" : "false"; } | |
| 51 | |
| 52 FORMAT_OVERLOAD (const void*) | |
| 53 { | |
| 54 String result; | |
| 55 result.sprintf ("%p", a); | |
| 56 return result; | |
| 57 } | |
| 58 | |
| 59 template<typename T> | |
| 60 FORMAT_OVERLOAD (const List<T>&) | |
| 61 { | |
| 62 String result; | |
| 63 | |
| 64 if (a.is_empty()) | |
| 65 return "{}"; | |
| 66 | |
| 67 result = "{"; | |
| 68 | |
| 69 for (auto it = a.begin(); it != a.end(); ++it) | |
| 70 { | |
| 71 if (it != a.begin()) | |
| 72 result += ", "; | |
| 73 | |
| 74 result += make_format_argument (*it); | |
| 75 } | |
| 76 | |
| 77 result += "}"; | |
| 78 return result; | |
| 79 } | |
| 80 | |
| 81 FORMAT_OVERLOAD (Color) | |
| 82 { | |
| 83 static const char* colorstrings[] = | |
| 84 { | |
| 85 "BLACK", "RED", "GREEN", "YELLOW", | |
| 86 "BLUE", "MAGENTA", "CYAN", "WHITE", "DEFAULT" | |
| 87 }; | |
| 88 | |
| 89 static_assert (sizeof colorstrings / sizeof *colorstrings == NUM_COLORS, | |
| 90 "colostrings[] has an incorrect amount of elements"); | |
| 91 | |
| 92 if (int (a) >= 0 and int (a) < NUM_COLORS) | |
| 93 return colorstrings[int (a)]; | |
| 94 | |
| 95 return "???"; | |
| 96 } | |
| 97 | |
| 98 FORMAT_OVERLOAD (Position) { return String ("(") + a.x + ", " + a.y + ")"; } | |
| 99 FORMAT_OVERLOAD (Size) { return String ("(") + a.width + "x" + a.height + ")"; } | |
| 100 | |
| 101 FORMAT_OVERLOAD (Rectangle) | |
| 102 { | |
| 103 String result; | |
| 104 result.sprintf ("{(%d, %d), (%dx%d)}", a.x, a.y, a.width, a.height); | |
| 105 return result; | |
| 106 } | |
| 107 | |
| 108 // | |
| 109 // ------------------------------------------------------------------------------------------------- | |
| 110 // | |
| 111 // Formats the given string with the given args. | |
| 112 // | |
| 113 auto format_args (const String& fmtstr, const Vector<String>& args) -> String; | |
| 114 | |
| 115 // | |
| 116 // ------------------------------------------------------------------------------------------------- | |
| 117 // | |
| 118 // Expands the given arguments into a vector of strings. | |
| 119 // | |
| 120 template<typename T, typename... RestTypes> | |
| 121 auto expand_format_arguments (Vector<String>& data, const T& arg, const RestTypes& ... rest) -> void | |
| 122 { | |
| 123 data.append (make_format_argument (arg).text()); | |
| 124 expand_format_arguments (data, rest...); | |
| 125 } | |
| 126 | |
| 127 static void expand_format_arguments (Vector<String>&) __attribute__( (unused)); | |
| 128 static void expand_format_arguments (Vector<String>&) {} | |
| 129 | |
| 130 // | |
| 131 // ------------------------------------------------------------------------------------------------- | |
| 132 // | |
| 133 // Formats the given formatter string and args and returns the string. | |
| 134 // This is essentially a modernized sprintf. | |
| 135 // | |
| 136 // Args in the format string take the form %n where n is a digit. The argument | |
| 137 // will be expanded to the nth argument passed. This is essentially Qt's | |
| 138 // QString::arg() syntax. Note: %0 is invalid. | |
| 139 // | |
| 140 // Arguments can be passed a modifier which takes the form of a character | |
| 141 // just before the digit. Currently supported modifiers are s, d and x. | |
| 142 // | |
| 143 // - s: The argument will expand into "s" if it would've not expanded into "1" | |
| 144 // otherwise. If it would have expanded into "1" it will expand into an | |
| 145 // empty string. | |
| 146 // | |
| 147 // - d: The argument expands into the numeric form of the first character of | |
| 148 // its previous expansion. Use this to get numeric forms of @c char | |
| 149 // arguments. | |
| 150 // | |
| 151 // - x: The numeric argument will be represented in hexadecimal notation. This | |
| 152 // will work if the argument is a string representing a number. If the | |
| 153 // argument did not expand into a number in the first place, 0 is used | |
| 154 // and 0x0 is printed. | |
| 155 // | |
| 156 template<typename... argtypes> | |
| 157 String format (const String& fmtstr, const argtypes&... raw_args) | |
| 158 { | |
| 159 Vector<String> args; | |
| 160 expand_format_arguments (args, raw_args...); | |
| 161 return format_args (fmtstr, args); | |
| 162 } | |
| 163 | |
| 164 // | |
| 165 // ------------------------------------------------------------------------------------------------- | |
| 166 // | |
| 167 // This is an overload of format() where no arguments are supplied. | |
| 168 // It returns the formatter string as-is. | |
| 169 // | |
| 170 static String format (const String& fmtstr) __attribute__ ((unused)); | |
| 171 static String format (const String& fmtstr) | |
| 172 { | |
| 173 return fmtstr; | |
| 174 } | |
| 175 | |
| 176 // | |
| 177 // ------------------------------------------------------------------------------------------------- | |
| 178 // | |
| 179 | |
| 180 template<typename... Args> | |
| 181 void print_to (FILE* fp, const String& fmtstr, Args const& ...args) | |
| 182 { | |
| 183 std::fprintf (fp, "%s", format (fmtstr, args...).chars()); | |
| 184 } | |
| 185 | |
| 186 // | |
| 187 // ------------------------------------------------------------------------------------------------- | |
| 188 // | |
| 189 | |
| 190 template<typename... argtypes> | |
| 191 void print_to (const String& filename, const String& fmtstr, const argtypes&... args) | |
| 192 { | |
| 193 FILE* handle; | |
| 194 | |
| 195 if ((handle = fopen (filename, "w+"))) | |
| 196 { | |
| 197 print_to (handle, fmtstr, args...); | |
| 198 fclose (handle); | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 // | |
| 203 // ------------------------------------------------------------------------------------------------- | |
| 204 // | |
| 205 | |
| 206 template<typename... argtypes> | |
| 207 void print (const String& fmtstr, const argtypes&... args) | |
| 208 { | |
| 209 print_to (stdout, fmtstr, args...); | |
| 210 } | |
| 211 | |
| 212 #define PRINT_TO_LOG(...) \ | |
| 213 { \ | |
| 214 print_to (LOGFILE, "%1:%2: ", __PRETTY_FUNCTION__, __LINE__); \ | |
| 215 print_to (LOGFILE, __VA_ARGS__); \ | |
| 216 } |
