comparison: src/format.cc
src/format.cc
- changeset 88
- 5def6ff8b466
- parent 87
- 8f65914e7046
- child 89
- 029a330a9bef
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| 87:8f65914e7046 | 88:5def6ff8b466 |
|---|---|
| 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 draw_position (const string& fmt, int pos) | |
| 37 { | |
| 38 string rep (fmt); | |
| 39 rep.replace ("\n", "↵"); | |
| 40 rep.replace ("\t", "⇥"); | |
| 41 | |
| 42 fprintf (stderr, "%s\n", rep.chars()); | |
| 43 | |
| 44 for (int x = 0; x < pos; ++x) | |
| 45 fprintf (stderr, "-"); | |
| 46 | |
| 47 fprintf (stderr, "^\n"); | |
| 48 } | |
| 49 | |
| 50 // ============================================================================= | |
| 51 // | |
| 52 string format_args (const list<format_arg>& args) | |
| 53 { | |
| 54 const string& fmtstr = args[0].as_string(); | |
| 55 assert (args.size() >= 1); | |
| 56 | |
| 57 if (args.size() == 1) | |
| 58 return args[0].as_string(); | |
| 59 | |
| 60 string fmt = fmtstr; | |
| 61 string out; | |
| 62 int pos = 0; | |
| 63 | |
| 64 while ((pos = fmt.first ("%", pos)) != -1) | |
| 65 { | |
| 66 if (fmt[pos + 1] == '%') | |
| 67 { | |
| 68 fmt.replace (pos, 2, "%"); | |
| 69 pos++; | |
| 70 continue; | |
| 71 } | |
| 72 | |
| 73 int ofs = 1; | |
| 74 char mod = '\0'; | |
| 75 | |
| 76 // handle modifiers | |
| 77 if (fmt[pos + ofs] == 's' || fmt[pos + ofs] == 'x') | |
| 78 { | |
| 79 mod = fmt[pos + ofs]; | |
| 80 ofs++; | |
| 81 } | |
| 82 | |
| 83 if (!isdigit (fmt[pos + ofs])) | |
| 84 { | |
| 85 fprintf (stderr, "bad format string, expected digit with optional " | |
| 86 "modifier after '%%':\n"); | |
| 87 draw_position (fmt, pos); | |
| 88 return fmt; | |
| 89 } | |
| 90 | |
| 91 int i = fmt[pos + ofs] - '0'; | |
| 92 | |
| 93 if (i >= args.size()) | |
| 94 { | |
| 95 fprintf (stderr, "format arg #%d used but not defined: %s\n", i, fmtstr.chars()); | |
| 96 return fmt; | |
| 97 } | |
| 98 | |
| 99 string repl = args[i].as_string(); | |
| 100 | |
| 101 switch (mod) | |
| 102 { | |
| 103 case 's': repl = (repl == "1") ? "" : "s"; break; | |
| 104 case 'd': repl.sprintf ("%d", repl[0]); break; | |
| 105 case 'x': repl.sprintf ("0x%X", repl.to_long()); break; | |
| 106 default: break; | |
| 107 } | |
| 108 | |
| 109 fmt.replace (pos, 1 + ofs, repl); | |
| 110 pos += repl.length(); | |
| 111 } | |
| 112 | |
| 113 return fmt; | |
| 114 } | |
| 115 | |
| 116 // ============================================================================= | |
| 117 // | |
| 118 void print_args (FILE* fp, const list<format_arg>& args) | |
| 119 { | |
| 120 string out = format_args (args); | |
| 121 fprintf (fp, "%s", out.chars()); | |
| 122 } | |
| 123 | |
| 124 // ============================================================================= | |
| 125 // | |
| 126 void do_error (string msg) | |
| 127 { | |
| 128 lexer* lx = lexer::get_current_lexer(); | |
| 129 string fileinfo; | |
| 130 | |
| 131 if (lx != null && lx->has_valid_token()) | |
| 132 { | |
| 133 lexer::token* tk = lx->get_token(); | |
| 134 fileinfo = format ("%1:%2:%3: ", tk->file, tk->line, tk->column); | |
| 135 } | |
| 136 | |
| 137 throw script_error (fileinfo + msg); | |
| 138 } |
