The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame^] | 1 | /* $NetBSD: syntax.c,v 1.1 2004/01/17 17:38:12 dsl Exp $ */ |
| 2 | |
| 3 | #include "shell.h" |
| 4 | #include "syntax.h" |
| 5 | #include "parser.h" |
| 6 | #include <limits.h> |
| 7 | |
| 8 | #if CWORD != 0 |
| 9 | #error initialisation assumes 'CWORD' is zero |
| 10 | #endif |
| 11 | |
| 12 | #define ndx(ch) (ch + 1 - CHAR_MIN) |
| 13 | #define set(ch, val) [ndx(ch)] = val, |
| 14 | #define set_range(s, e, val) [ndx(s) ... ndx(e)] = val, |
| 15 | |
| 16 | /* syntax table used when not in quotes */ |
| 17 | const char basesyntax[257] = { CEOF, |
| 18 | set_range(CTL_FIRST, CTL_LAST, CCTL) |
| 19 | set('\n', CNL) |
| 20 | set('\\', CBACK) |
| 21 | set('\'', CSQUOTE) |
| 22 | set('"', CDQUOTE) |
| 23 | set('`', CBQUOTE) |
| 24 | set('$', CVAR) |
| 25 | set('}', CENDVAR) |
| 26 | set('<', CSPCL) |
| 27 | set('>', CSPCL) |
| 28 | set('(', CSPCL) |
| 29 | set(')', CSPCL) |
| 30 | set(';', CSPCL) |
| 31 | set('&', CSPCL) |
| 32 | set('|', CSPCL) |
| 33 | set(' ', CSPCL) |
| 34 | set('\t', CSPCL) |
| 35 | }; |
| 36 | |
| 37 | /* syntax table used when in double quotes */ |
| 38 | const char dqsyntax[257] = { CEOF, |
| 39 | set_range(CTL_FIRST, CTL_LAST, CCTL) |
| 40 | set('\n', CNL) |
| 41 | set('\\', CBACK) |
| 42 | set('"', CDQUOTE) |
| 43 | set('`', CBQUOTE) |
| 44 | set('$', CVAR) |
| 45 | set('}', CENDVAR) |
| 46 | /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ |
| 47 | set('!', CCTL) |
| 48 | set('*', CCTL) |
| 49 | set('?', CCTL) |
| 50 | set('[', CCTL) |
| 51 | set('=', CCTL) |
| 52 | set('~', CCTL) |
| 53 | set(':', CCTL) |
| 54 | set('/', CCTL) |
| 55 | set('-', CCTL) |
| 56 | }; |
| 57 | |
| 58 | /* syntax table used when in single quotes */ |
| 59 | const char sqsyntax[257] = { CEOF, |
| 60 | set_range(CTL_FIRST, CTL_LAST, CCTL) |
| 61 | set('\n', CNL) |
| 62 | set('\'', CSQUOTE) |
| 63 | /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ |
| 64 | set('!', CCTL) |
| 65 | set('*', CCTL) |
| 66 | set('?', CCTL) |
| 67 | set('[', CCTL) |
| 68 | set('=', CCTL) |
| 69 | set('~', CCTL) |
| 70 | set(':', CCTL) |
| 71 | set('/', CCTL) |
| 72 | set('-', CCTL) |
| 73 | }; |
| 74 | |
| 75 | /* syntax table used when in arithmetic */ |
| 76 | const char arisyntax[257] = { CEOF, |
| 77 | set_range(CTL_FIRST, CTL_LAST, CCTL) |
| 78 | set('\n', CNL) |
| 79 | set('\\', CBACK) |
| 80 | set('`', CBQUOTE) |
| 81 | set('\'', CSQUOTE) |
| 82 | set('"', CDQUOTE) |
| 83 | set('$', CVAR) |
| 84 | set('}', CENDVAR) |
| 85 | set('(', CLP) |
| 86 | set(')', CRP) |
| 87 | }; |
| 88 | |
| 89 | /* character classification table */ |
| 90 | const char is_type[257] = { 0, |
| 91 | set_range('0', '9', ISDIGIT) |
| 92 | set_range('a', 'z', ISLOWER) |
| 93 | set_range('A', 'Z', ISUPPER) |
| 94 | set('_', ISUNDER) |
| 95 | set('#', ISSPECL) |
| 96 | set('?', ISSPECL) |
| 97 | set('$', ISSPECL) |
| 98 | set('!', ISSPECL) |
| 99 | set('-', ISSPECL) |
| 100 | set('*', ISSPECL) |
| 101 | set('@', ISSPECL) |
| 102 | }; |