comparison: src/format.cpp
src/format.cpp
- changeset 119
- bdf8d46c145f
- child 124
- a7b769a0e537
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| 118:e3361cf7cbf4 | 119:bdf8d46c145f |
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| 1 /* | |
| 2 Copyright 2012-2014 Santeri 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. The name of the author may not be used to endorse or promote products | |
| 15 derived from this software without specific prior written permission. | |
| 16 | |
| 17 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 18 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 19 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 20 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 21 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 22 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 26 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <cstdio> | |
| 30 #include "main.h" | |
| 31 #include "format.h" | |
| 32 #include "lexer.h" | |
| 33 | |
| 34 // ============================================================================= | |
| 35 // | |
| 36 static void formatError (String fmtstr, const String errdescribe, int pos) | |
| 37 { | |
| 38 fmtstr.replace ("\n", " "); | |
| 39 fmtstr.replace ("\t", " "); | |
| 40 String errmsg ("With format string:\n" + fmtstr + "\n"); | |
| 41 | |
| 42 for (int x = 0; x < pos; ++x) | |
| 43 errmsg += "-"; | |
| 44 | |
| 45 errmsg += "^\n" + errdescribe; | |
| 46 throw std::logic_error (errmsg.stdString()); | |
| 47 } | |
| 48 | |
| 49 // ============================================================================= | |
| 50 // | |
| 51 String formatArgs (const String& fmtstr, const std::vector<String>& args) | |
| 52 { | |
| 53 String fmt = fmtstr; | |
| 54 String out; | |
| 55 int pos = 0; | |
| 56 | |
| 57 while ((pos = fmt.firstIndexOf ("%", pos)) != -1) | |
| 58 { | |
| 59 if (fmt[pos + 1] == '%') | |
| 60 { | |
| 61 fmt.replace (pos, 2, "%"); | |
| 62 pos++; | |
| 63 continue; | |
| 64 } | |
| 65 | |
| 66 int ofs = 1; | |
| 67 char mod = '\0'; | |
| 68 | |
| 69 // handle modifiers | |
| 70 if (fmt[pos + ofs] == 's' || fmt[pos + ofs] == 'x' || fmt[pos + ofs] == 'd') | |
| 71 { | |
| 72 mod = fmt[pos + ofs]; | |
| 73 ofs++; | |
| 74 } | |
| 75 | |
| 76 if (!isdigit (fmt[pos + ofs])) | |
| 77 formatError (fmtstr, "bad format string, expected digit with optional " | |
| 78 "modifier after '%%'", pos); | |
| 79 | |
| 80 int i = fmt[pos + ofs] - '0'; | |
| 81 | |
| 82 if (i > static_cast<signed> (args.size())) | |
| 83 formatError (fmtstr, String ("Format argument #") + i + " used but not defined.", pos); | |
| 84 | |
| 85 String replacement = args[i - 1]; | |
| 86 | |
| 87 switch (mod) | |
| 88 { | |
| 89 case 's': replacement = (replacement == "1") ? "" : "s"; break; | |
| 90 case 'd': replacement.sprintf ("%d", replacement[0]); break; | |
| 91 case 'x': replacement.sprintf ("0x%X", replacement.toLong()); break; | |
| 92 default: break; | |
| 93 } | |
| 94 | |
| 95 fmt.replace (pos, 1 + ofs, replacement); | |
| 96 pos += replacement.length(); | |
| 97 } | |
| 98 | |
| 99 return fmt; | |
| 100 } | |
| 101 | |
| 102 // ============================================================================= | |
| 103 // | |
| 104 void error (String msg) | |
| 105 { | |
| 106 Lexer* lx = Lexer::getCurrentLexer(); | |
| 107 String fileinfo; | |
| 108 | |
| 109 if (lx != null && lx->hasValidToken()) | |
| 110 { | |
| 111 Lexer::TokenInfo* tk = lx->token(); | |
| 112 fileinfo = format ("%1:%2:%3: ", tk->file, tk->line, tk->column); | |
| 113 } | |
| 114 | |
| 115 throw std::runtime_error (fileinfo + msg); | |
| 116 } |
