names.h revision 175297
1/* 2 * Copyright (c) Ian F. Darwin 1986-1995. 3 * Software written by Ian F. Darwin and others; 4 * maintained 1995-present by Christos Zoulas and others. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice immediately at the beginning of the file, without modification, 11 * this list of conditions, and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28/* 29 * Names.h - names and types used by ascmagic in file(1). 30 * These tokens are here because they can appear anywhere in 31 * the first HOWMANY bytes, while tokens in MAGIC must 32 * appear at fixed offsets into the file. Don't make HOWMANY 33 * too high unless you have a very fast CPU. 34 * 35 * $File: names.h,v 1.29 2007/12/27 20:30:35 christos Exp $ 36 */ 37 38/* 39 modified by Chris Lowth - 9 April 2000 40 to add mime type strings to the types table. 41*/ 42 43/* these types are used to index the table 'types': keep em in sync! */ 44#define L_C 0 /* first and foremost on UNIX */ 45#define L_CC 1 /* Bjarne's postincrement */ 46#define L_MAKE 2 /* Makefiles */ 47#define L_PLI 3 /* PL/1 */ 48#define L_MACH 4 /* some kinda assembler */ 49#define L_ENG 5 /* English */ 50#define L_PAS 6 /* Pascal */ 51#define L_MAIL 7 /* Electronic mail */ 52#define L_NEWS 8 /* Usenet Netnews */ 53#define L_JAVA 9 /* Java code */ 54#define L_HTML 10 /* HTML */ 55#define L_BCPL 11 /* BCPL */ 56#define L_M4 12 /* M4 */ 57#define L_PO 13 /* PO */ 58 59static const struct { 60 const char *human; 61 const char *mime; 62} types[] = { 63 { "C program", "text/x-c", }, 64 { "C++ program", "text/x-c++" }, 65 { "make commands", "text/x-makefile" }, 66 { "PL/1 program", "text/x-pl1" }, 67 { "assembler program", "text/x-asm" }, 68 { "English", "text/plain" }, 69 { "Pascal program", "text/x-pascal" }, 70 { "mail", "text/x-mail" }, 71 { "news", "text/x-news" }, 72 { "Java program", "text/x-java" }, 73 { "HTML document", "text/html", }, 74 { "BCPL program", "text/x-bcpl" }, 75 { "M4 macro language pre-processor", "text/x-m4" }, 76 { "PO (gettext message catalogue)", "text/x-po" }, 77 { "cannot happen error on names.h/types", "error/x-error" }, 78 { 0, 0} 79}; 80 81/* 82 * XXX - how should we distinguish Java from C++? 83 * The trick used in a Debian snapshot, of having "extends" or "implements" 84 * as tags for Java, doesn't work very well, given that those keywords 85 * are often preceded by "class", which flags it as C++. 86 * 87 * Perhaps we need to be able to say 88 * 89 * If "class" then 90 * 91 * if "extends" or "implements" then 92 * Java 93 * else 94 * C++ 95 * endif 96 * 97 * Or should we use other keywords, such as "package" or "import"? 98 * Unfortunately, Ada95 uses "package", and Modula-3 uses "import", 99 * although I infer from the language spec at 100 * 101 * http://www.research.digital.com/SRC/m3defn/html/m3.html 102 * 103 * that Modula-3 uses "IMPORT" rather than "import", i.e. it must be 104 * in all caps. 105 * 106 * So, for now, we go with "import". We must put it before the C++ 107 * stuff, so that we don't misidentify Java as C++. Not using "package" 108 * means we won't identify stuff that defines a package but imports 109 * nothing; hopefully, very little Java code imports nothing (one of the 110 * reasons for doing OO programming is to import as much as possible 111 * and write only what you need to, right?). 112 * 113 * Unfortunately, "import" may cause us to misidentify English text 114 * as Java, as it comes after "the" and "The". Perhaps we need a fancier 115 * heuristic to identify Java? 116 */ 117static struct names { 118 const char *name; 119 short type; 120} names[] = { 121 /* These must be sorted by eye for optimal hit rate */ 122 /* Add to this list only after substantial meditation */ 123 {"msgid", L_PO}, 124 {"dnl", L_M4}, 125 {"import", L_JAVA}, 126 {"\"libhdr\"", L_BCPL}, 127 {"\"LIBHDR\"", L_BCPL}, 128 {"//", L_CC}, 129 {"template", L_CC}, 130 {"virtual", L_CC}, 131 {"class", L_CC}, 132 {"public:", L_CC}, 133 {"private:", L_CC}, 134 {"/*", L_C}, /* must precede "The", "the", etc. */ 135 {"#include", L_C}, 136 {"char", L_C}, 137 {"The", L_ENG}, 138 {"the", L_ENG}, 139 {"double", L_C}, 140 {"extern", L_C}, 141 {"float", L_C}, 142 {"struct", L_C}, 143 {"union", L_C}, 144 {"CFLAGS", L_MAKE}, 145 {"LDFLAGS", L_MAKE}, 146 {"all:", L_MAKE}, 147 {".PRECIOUS", L_MAKE}, 148/* Too many files of text have these words in them. Find another way 149 * to recognize Fortrash. 150 */ 151#ifdef NOTDEF 152 {"subroutine", L_FORT}, 153 {"function", L_FORT}, 154 {"block", L_FORT}, 155 {"common", L_FORT}, 156 {"dimension", L_FORT}, 157 {"integer", L_FORT}, 158 {"data", L_FORT}, 159#endif /*NOTDEF*/ 160 {".ascii", L_MACH}, 161 {".asciiz", L_MACH}, 162 {".byte", L_MACH}, 163 {".even", L_MACH}, 164 {".globl", L_MACH}, 165 {".text", L_MACH}, 166 {"clr", L_MACH}, 167 {"(input,", L_PAS}, 168 {"program", L_PAS}, 169 {"record", L_PAS}, 170 {"dcl", L_PLI}, 171 {"Received:", L_MAIL}, 172 {">From", L_MAIL}, 173 {"Return-Path:",L_MAIL}, 174 {"Cc:", L_MAIL}, 175 {"Newsgroups:", L_NEWS}, 176 {"Path:", L_NEWS}, 177 {"Organization:",L_NEWS}, 178 {"href=", L_HTML}, 179 {"HREF=", L_HTML}, 180 {"<body", L_HTML}, 181 {"<BODY", L_HTML}, 182 {"<html", L_HTML}, 183 {"<HTML", L_HTML}, 184 {NULL, 0} 185}; 186#define NNAMES ((sizeof(names)/sizeof(struct names)) - 1) 187