[6974a34] | 1 | /* readval.c |
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[0395657] | 2 | * Routines to read a prefix or number from the current input file |
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[d333899] | 3 | * Copyright (C) 1991-2003,2005,2006 Olly Betts |
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[846746e] | 4 | * |
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[89231c4] | 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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[846746e] | 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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[89231c4] | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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[846746e] | 14 | * |
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[89231c4] | 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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[d333899] | 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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[d1b1380] | 18 | */ |
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| 19 | |
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[a420b49] | 20 | #ifdef HAVE_CONFIG_H |
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| 21 | # include <config.h> |
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| 22 | #endif |
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[d1b1380] | 23 | |
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[c00c74a9] | 24 | #include <limits.h> |
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[be97baf] | 25 | #include <stddef.h> /* for offsetof */ |
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[c00c74a9] | 26 | |
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[a420b49] | 27 | #include "cavern.h" |
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[dd5b1a8] | 28 | #include "debug.h" |
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[a1706d1] | 29 | #include "filename.h" |
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| 30 | #include "message.h" |
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[d1b1380] | 31 | #include "readval.h" |
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| 32 | #include "datain.h" |
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[fb2e93c] | 33 | #include "netbits.h" |
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[8cf2e04] | 34 | #include "osalloc.h" |
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[76bb277a] | 35 | #include "str.h" |
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[d1b1380] | 36 | |
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[7d5f3c0] | 37 | #ifdef HAVE_SETJMP_H |
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[647407d] | 38 | # define LONGJMP(JB) longjmp((JB), 1) |
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| 39 | #else |
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| 40 | # define LONGJMP(JB) exit(1) |
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| 41 | #endif |
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| 42 | |
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[c86cc71] | 43 | int root_depr_count = 0; |
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| 44 | |
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[21c226e] | 45 | /* if prefix is omitted: if f_optional return NULL, otherwise use longjmp */ |
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[647407d] | 46 | static prefix * |
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[21c226e] | 47 | read_prefix_(bool f_optional, bool fSurvey, bool fSuspectTypo, bool fAllowRoot) |
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[a420b49] | 48 | { |
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[4a6a094] | 49 | prefix *back_ptr, *ptr; |
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[a420b49] | 50 | char *name; |
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| 51 | size_t name_len = 32; |
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[eb18f4d] | 52 | size_t i; |
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[647407d] | 53 | bool fNew; |
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[d6274ba] | 54 | bool fImplicitPrefix = fTrue; |
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[932f7e9] | 55 | int depth = -1; |
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[a420b49] | 56 | |
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| 57 | skipblanks(); |
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[7f1ab95] | 58 | #ifndef NO_DEPRECATED |
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[a420b49] | 59 | if (isRoot(ch)) { |
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[84c60fc] | 60 | if (!fAllowRoot) { |
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[fa42426] | 61 | compile_error_skip(/*ROOT is deprecated*/25); |
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[421b7d2] | 62 | LONGJMP(file.jbSkipLine); |
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[84c60fc] | 63 | } |
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[c86cc71] | 64 | if (root_depr_count < 5) { |
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| 65 | compile_warning(/*ROOT is deprecated*/25); |
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| 66 | if (++root_depr_count == 5) |
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[c40038a] | 67 | compile_warning(/*Further uses of this deprecated feature will not be reported*/95); |
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[c86cc71] | 68 | } |
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[d1b1380] | 69 | nextch(); |
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[a420b49] | 70 | ptr = root; |
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| 71 | if (!isNames(ch)) { |
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| 72 | if (!isSep(ch)) return ptr; |
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[27b8b59] | 73 | /* Allow optional SEPARATOR after ROOT */ |
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[a420b49] | 74 | nextch(); |
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| 75 | } |
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[647407d] | 76 | fImplicitPrefix = fFalse; |
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[a420b49] | 77 | } else { |
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| 78 | ptr = pcs->Prefix; |
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| 79 | } |
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[7f1ab95] | 80 | #else |
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| 81 | ptr = pcs->Prefix; |
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| 82 | #endif |
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[a420b49] | 83 | |
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| 84 | i = 0; |
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[be97baf] | 85 | name = NULL; |
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[a420b49] | 86 | do { |
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[647407d] | 87 | fNew = fFalse; |
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| 88 | if (isSep(ch)) fImplicitPrefix = fFalse; |
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[be97baf] | 89 | if (name == NULL) { |
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| 90 | /* Need a new name buffer */ |
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| 91 | name = osmalloc(name_len); |
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| 92 | } |
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[a420b49] | 93 | /* i==0 iff this is the first pass */ |
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| 94 | if (i) { |
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| 95 | i = 0; |
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| 96 | nextch(); |
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| 97 | } |
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| 98 | while (isNames(ch)) { |
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| 99 | if (i < pcs->Truncate) { |
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| 100 | /* truncate name */ |
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[1157304] | 101 | name[i++] = (pcs->Case == LOWER ? tolower(ch) : |
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| 102 | (pcs->Case == OFF ? ch : toupper(ch))); |
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[a420b49] | 103 | if (i >= name_len) { |
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| 104 | name_len = name_len + name_len; |
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| 105 | name = osrealloc(name, name_len); |
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| 106 | } |
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[8cf2e04] | 107 | } |
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[a420b49] | 108 | nextch(); |
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[8cf2e04] | 109 | } |
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[a420b49] | 110 | if (i == 0) { |
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| 111 | osfree(name); |
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[21c226e] | 112 | if (!f_optional) { |
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[ee1d81f] | 113 | if (isEol(ch)) { |
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[84c60fc] | 114 | if (fSurvey) { |
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[fa42426] | 115 | compile_error_skip(/*Expecting survey name*/89); |
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[84c60fc] | 116 | } else { |
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[fa42426] | 117 | compile_error_skip(/*Expecting station name*/28); |
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[84c60fc] | 118 | } |
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[ee1d81f] | 119 | } else { |
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[fa42426] | 120 | compile_error_skip(/*Character `%c' not allowed in station name (use *SET NAMES to set allowed characters)*/7, ch); |
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[ee1d81f] | 121 | } |
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[647407d] | 122 | LONGJMP(file.jbSkipLine); |
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| 123 | } |
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[a420b49] | 124 | return (prefix *)NULL; |
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[d1b1380] | 125 | } |
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[a420b49] | 126 | |
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[76bb277a] | 127 | name[i++] = '\0'; |
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[cb3d1e2] | 128 | |
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[a420b49] | 129 | back_ptr = ptr; |
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| 130 | ptr = ptr->down; |
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| 131 | if (ptr == NULL) { |
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| 132 | /* Special case first time around at each level */ |
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[be97baf] | 133 | name = osrealloc(name, i); |
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[a420b49] | 134 | ptr = osnew(prefix); |
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| 135 | ptr->ident = name; |
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[be97baf] | 136 | name = NULL; |
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[a420b49] | 137 | ptr->right = ptr->down = NULL; |
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| 138 | ptr->pos = NULL; |
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[6adb88c] | 139 | ptr->shape = 0; |
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[a420b49] | 140 | ptr->stn = NULL; |
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| 141 | ptr->up = back_ptr; |
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[d333899] | 142 | ptr->filename = file.filename; |
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| 143 | ptr->line = file.line; |
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[932f7e9] | 144 | ptr->min_export = ptr->max_export = 0; |
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[95c3272] | 145 | ptr->sflags = BIT(SFLAGS_SURVEY); |
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| 146 | if (fSuspectTypo && !fImplicitPrefix) |
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| 147 | ptr->sflags |= BIT(SFLAGS_SUSPECTTYPO); |
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[a420b49] | 148 | back_ptr->down = ptr; |
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[647407d] | 149 | fNew = fTrue; |
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[a420b49] | 150 | } else { |
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[be97baf] | 151 | /* Use caching to speed up adding an increasing sequence to a |
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| 152 | * large survey */ |
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| 153 | static prefix *cached_survey = NULL, *cached_station = NULL; |
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[a420b49] | 154 | prefix *ptrPrev = NULL; |
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[76bb277a] | 155 | int cmp = 1; /* result of strcmp ( -ve for <, 0 for =, +ve for > ) */ |
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[be97baf] | 156 | if (cached_survey == back_ptr) { |
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| 157 | cmp = strcmp(cached_station->ident, name); |
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| 158 | if (cmp <= 0) ptr = cached_station; |
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| 159 | } |
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| 160 | while (ptr && (cmp = strcmp(ptr->ident, name))<0) { |
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[a420b49] | 161 | ptrPrev = ptr; |
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| 162 | ptr = ptr->right; |
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| 163 | } |
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| 164 | if (cmp) { |
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| 165 | /* ie we got to one that was higher, or the end */ |
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[be97baf] | 166 | prefix *newptr; |
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| 167 | name = osrealloc(name, i); |
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| 168 | newptr = osnew(prefix); |
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[647407d] | 169 | newptr->ident = name; |
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[be97baf] | 170 | name = NULL; |
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[a420b49] | 171 | if (ptrPrev == NULL) |
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[647407d] | 172 | back_ptr->down = newptr; |
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[a420b49] | 173 | else |
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[647407d] | 174 | ptrPrev->right = newptr; |
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| 175 | newptr->right = ptr; |
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| 176 | newptr->down = NULL; |
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| 177 | newptr->pos = NULL; |
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[6adb88c] | 178 | newptr->shape = 0; |
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[647407d] | 179 | newptr->stn = NULL; |
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| 180 | newptr->up = back_ptr; |
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[d333899] | 181 | newptr->filename = file.filename; |
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| 182 | newptr->line = file.line; |
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[421b7d2] | 183 | newptr->min_export = newptr->max_export = 0; |
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[95c3272] | 184 | newptr->sflags = BIT(SFLAGS_SURVEY); |
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| 185 | if (fSuspectTypo && !fImplicitPrefix) |
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| 186 | newptr->sflags |= BIT(SFLAGS_SUSPECTTYPO); |
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[647407d] | 187 | ptr = newptr; |
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| 188 | fNew = fTrue; |
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[a420b49] | 189 | } |
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[be97baf] | 190 | cached_survey = back_ptr; |
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| 191 | cached_station = ptr; |
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[d1b1380] | 192 | } |
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[fb2e93c] | 193 | depth++; |
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[21c226e] | 194 | f_optional = fFalse; /* disallow after first level */ |
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[a420b49] | 195 | } while (isSep(ch)); |
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[be97baf] | 196 | if (name) osfree(name); |
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| 197 | |
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[d40f787] | 198 | /* don't warn about a station that is referred to twice */ |
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[95c3272] | 199 | if (!fNew) ptr->sflags &= ~BIT(SFLAGS_SUSPECTTYPO); |
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[421b7d2] | 200 | |
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[6430f0e] | 201 | if (fNew) { |
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[95c3272] | 202 | /* fNew means SFLAGS_SURVEY is currently set */ |
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[4c07c51] | 203 | SVX_ASSERT(TSTBIT(ptr->sflags, SFLAGS_SURVEY)); |
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[c00c74a9] | 204 | if (!fSurvey) { |
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| 205 | ptr->sflags &= ~BIT(SFLAGS_SURVEY); |
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[27b8b59] | 206 | if (TSTBIT(pcs->infer, INFER_EXPORTS)) ptr->min_export = USHRT_MAX; |
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[c00c74a9] | 207 | } |
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[6430f0e] | 208 | } else { |
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| 209 | /* check that the same name isn't being used for a survey and station */ |
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[95c3272] | 210 | if (fSurvey ^ TSTBIT(ptr->sflags, SFLAGS_SURVEY)) { |
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[6430f0e] | 211 | compile_error(/*`%s' can't be both a station and a survey*/27, |
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| 212 | sprint_prefix(ptr)); |
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| 213 | } |
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[27b8b59] | 214 | if (!fSurvey && TSTBIT(pcs->infer, INFER_EXPORTS)) ptr->min_export = USHRT_MAX; |
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[051a72b] | 215 | } |
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| 216 | |
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[932f7e9] | 217 | /* check the export level */ |
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| 218 | #if 0 |
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| 219 | printf("R min %d max %d depth %d pfx %s\n", |
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| 220 | ptr->min_export, ptr->max_export, depth, sprint_prefix(ptr)); |
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| 221 | #endif |
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[c00c74a9] | 222 | if (ptr->min_export == 0 || ptr->min_export == USHRT_MAX) { |
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[932f7e9] | 223 | if (depth > ptr->max_export) ptr->max_export = depth; |
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| 224 | } else if (ptr->max_export < depth) { |
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[016068a] | 225 | const char *filename_store = file.filename; |
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| 226 | unsigned int line_store = file.line; |
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[dd5b1a8] | 227 | prefix *survey = ptr; |
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| 228 | char *s; |
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| 229 | int level; |
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| 230 | for (level = ptr->max_export + 1; level; level--) { |
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| 231 | survey = survey->up; |
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[4c07c51] | 232 | SVX_ASSERT(survey); |
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[dd5b1a8] | 233 | } |
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| 234 | s = osstrdup(sprint_prefix(survey)); |
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[016068a] | 235 | if (survey->filename) { |
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| 236 | file.filename = survey->filename; |
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| 237 | file.line = survey->line; |
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| 238 | } |
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[dd5b1a8] | 239 | compile_error(/*Station `%s' not exported from survey `%s'*/26, |
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| 240 | sprint_prefix(ptr), s); |
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[016068a] | 241 | if (survey->filename) { |
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| 242 | file.filename = filename_store; |
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| 243 | file.line = line_store; |
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| 244 | } |
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[dd5b1a8] | 245 | osfree(s); |
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[932f7e9] | 246 | #if 0 |
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| 247 | printf(" *** pfx %s warning not exported enough depth %d " |
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[421b7d2] | 248 | "ptr->max_export %d\n", sprint_prefix(ptr), |
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[932f7e9] | 249 | depth, ptr->max_export); |
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| 250 | #endif |
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| 251 | } |
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[a420b49] | 252 | return ptr; |
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[d1b1380] | 253 | } |
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| 254 | |
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[21c226e] | 255 | /* if prefix is omitted: if f_optional return NULL, otherwise use longjmp */ |
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[647407d] | 256 | extern prefix * |
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[21c226e] | 257 | read_prefix_survey(bool f_optional, bool fAllowRoot) |
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[051a72b] | 258 | { |
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[21c226e] | 259 | return read_prefix_(f_optional, fTrue, fFalse, fAllowRoot); |
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[051a72b] | 260 | } |
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| 261 | |
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[21c226e] | 262 | /* if prefix is omitted: if f_optional return NULL, otherwise use longjmp */ |
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[051a72b] | 263 | extern prefix * |
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[21c226e] | 264 | read_prefix_stn(bool f_optional, bool fAllowRoot) |
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[647407d] | 265 | { |
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[21c226e] | 266 | return read_prefix_(f_optional, fFalse, fFalse, fAllowRoot); |
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[647407d] | 267 | } |
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| 268 | |
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[21c226e] | 269 | /* if prefix is omitted: if f_optional return NULL, otherwise use longjmp */ |
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[051a72b] | 270 | /* Same as read_prefix_stn but implicit checks are made */ |
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[647407d] | 271 | extern prefix * |
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[21c226e] | 272 | read_prefix_stn_check_implicit(bool f_optional, bool fAllowRoot) |
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[647407d] | 273 | { |
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[21c226e] | 274 | return read_prefix_(f_optional, fFalse, fTrue, fAllowRoot); |
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[647407d] | 275 | } |
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| 276 | |
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[21c226e] | 277 | /* if numeric expr is omitted: if f_optional return HUGE_REAL, else longjmp */ |
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| 278 | static real |
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| 279 | read_number(bool f_optional) |
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[a420b49] | 280 | { |
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| 281 | bool fPositive, fDigits = fFalse; |
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| 282 | real n = (real)0.0; |
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[c80bd34] | 283 | filepos fp; |
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| 284 | int ch_old; |
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[a420b49] | 285 | |
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[c80bd34] | 286 | get_pos(&fp); |
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| 287 | ch_old = ch; |
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[a420b49] | 288 | fPositive = !isMinus(ch); |
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| 289 | if (isSign(ch)) nextch(); |
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| 290 | |
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| 291 | while (isdigit(ch)) { |
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[6974a34] | 292 | n = n * (real)10.0 + (char)(ch - '0'); |
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[d1b1380] | 293 | nextch(); |
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[a420b49] | 294 | fDigits = fTrue; |
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| 295 | } |
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| 296 | |
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| 297 | if (isDecimal(ch)) { |
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| 298 | real mult = (real)1.0; |
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| 299 | nextch(); |
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| 300 | while (isdigit(ch)) { |
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| 301 | mult *= (real).1; |
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| 302 | n += (char)(ch - '0') * mult; |
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| 303 | fDigits = fTrue; |
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| 304 | nextch(); |
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| 305 | } |
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| 306 | } |
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| 307 | |
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| 308 | /* !'fRead' => !fDigits so fDigits => 'fRead' */ |
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| 309 | if (fDigits) return (fPositive ? n : -n); |
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| 310 | |
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| 311 | /* didn't read a valid number. If it's optional, reset filepos & return */ |
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[21c226e] | 312 | if (f_optional) { |
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[c80bd34] | 313 | set_pos(&fp); |
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[a420b49] | 314 | return HUGE_REAL; |
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| 315 | } |
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| 316 | |
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[c80bd34] | 317 | if (isOmit(ch_old)) { |
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[647407d] | 318 | compile_error(/*Field may not be omitted*/8); |
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| 319 | } else { |
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[39fba51] | 320 | compile_error_token(/*Expecting numeric field, found `%s'*/9); |
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[647407d] | 321 | } |
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| 322 | LONGJMP(file.jbSkipLine); |
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[a420b49] | 323 | return 0.0; /* for brain-fried compilers */ |
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[d1b1380] | 324 | } |
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[647407d] | 325 | |
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[21c226e] | 326 | extern real |
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| 327 | read_numeric(bool f_optional, int *p_n_readings) |
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| 328 | { |
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| 329 | size_t n_readings = 0; |
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| 330 | real tot = (real)0.0; |
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| 331 | |
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| 332 | skipblanks(); |
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| 333 | if (!isOpen(ch)) { |
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| 334 | real r = read_number(f_optional); |
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| 335 | if (p_n_readings) *p_n_readings = (r == HUGE_REAL ? 0 : 1); |
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| 336 | return r; |
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| 337 | } |
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| 338 | nextch(); |
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| 339 | |
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| 340 | skipblanks(); |
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| 341 | do { |
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| 342 | tot += read_number(fFalse); |
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| 343 | ++n_readings; |
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| 344 | skipblanks(); |
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| 345 | } while (!isClose(ch)); |
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| 346 | nextch(); |
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| 347 | |
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| 348 | if (p_n_readings) *p_n_readings = n_readings; |
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| 349 | /* FIXME: special averaging for bearings ... */ |
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| 350 | /* And for percentage gradient */ |
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| 351 | return tot / n_readings; |
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| 352 | } |
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| 353 | |
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[2aa2f3f] | 354 | /* read numeric expr or omit (return HUGE_REAL); else longjmp */ |
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| 355 | extern real |
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[21c226e] | 356 | read_numeric_or_omit(int *p_n_readings) |
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[2aa2f3f] | 357 | { |
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[21c226e] | 358 | real v = read_numeric(fTrue, p_n_readings); |
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[2aa2f3f] | 359 | if (v == HUGE_REAL) { |
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| 360 | if (!isOmit(ch)) { |
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[39fba51] | 361 | compile_error_token(/*Expecting numeric field, found `%s'*/9); |
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[2aa2f3f] | 362 | LONGJMP(file.jbSkipLine); |
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| 363 | return 0.0; /* for brain-fried compilers */ |
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| 364 | } |
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| 365 | nextch(); |
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| 366 | } |
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| 367 | return v; |
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| 368 | } |
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| 369 | |
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[950a829] | 370 | /* Don't skip blanks, variable error code */ |
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| 371 | static unsigned int |
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[029cc3f] | 372 | read_uint_internal(int errmsg, filepos *fp) |
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[647407d] | 373 | { |
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[421b7d2] | 374 | unsigned int n = 0; |
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[647407d] | 375 | if (!isdigit(ch)) { |
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[029cc3f] | 376 | if (fp) set_pos(fp); |
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[39fba51] | 377 | compile_error_token(errmsg); |
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[647407d] | 378 | LONGJMP(file.jbSkipLine); |
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| 379 | } |
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| 380 | while (isdigit(ch)) { |
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| 381 | n = n * 10 + (char)(ch - '0'); |
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| 382 | nextch(); |
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| 383 | } |
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| 384 | return n; |
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| 385 | } |
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[76bb277a] | 386 | |
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[950a829] | 387 | extern unsigned int |
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| 388 | read_uint(void) |
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| 389 | { |
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| 390 | skipblanks(); |
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[029cc3f] | 391 | return read_uint_internal(/*Expecting numeric field, found `%s'*/9, NULL); |
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[950a829] | 392 | } |
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| 393 | |
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[76bb277a] | 394 | extern void |
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| 395 | read_string(char **pstr, int *plen) |
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| 396 | { |
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| 397 | s_zero(pstr); |
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| 398 | |
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| 399 | skipblanks(); |
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| 400 | if (ch == '\"') { |
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[1157304] | 401 | /* String quoted in "" */ |
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[76bb277a] | 402 | nextch(); |
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[457a390] | 403 | while (1) { |
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| 404 | if (isEol(ch)) { |
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[fa42426] | 405 | compile_error_skip(/*Missing "*/69); |
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[457a390] | 406 | return; |
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| 407 | } |
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| 408 | |
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| 409 | if (ch == '\"') break; |
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| 410 | |
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| 411 | s_catchar(pstr, plen, ch); |
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| 412 | nextch(); |
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| 413 | } |
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| 414 | } else { |
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[1157304] | 415 | /* Unquoted string */ |
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[457a390] | 416 | while (1) { |
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| 417 | if (isEol(ch) || isComm(ch)) { |
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[b97d134] | 418 | if (!*pstr || !(*pstr)[0]) { |
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[fa42426] | 419 | compile_error_skip(/*Expecting string field*/121); |
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[b97d134] | 420 | } |
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[457a390] | 421 | return; |
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[76bb277a] | 422 | } |
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| 423 | |
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[457a390] | 424 | if (isBlank(ch)) break; |
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[76bb277a] | 425 | |
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[457a390] | 426 | s_catchar(pstr, plen, ch); |
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| 427 | nextch(); |
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| 428 | } |
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[76bb277a] | 429 | } |
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[421b7d2] | 430 | |
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[76bb277a] | 431 | nextch(); |
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| 432 | } |
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[950a829] | 433 | |
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[e0c7cd1] | 434 | static int lastday[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; |
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| 435 | |
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| 436 | extern int |
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| 437 | last_day(int year, int month) |
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| 438 | { |
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| 439 | SVX_ASSERT(month >= 1 && month <= 12); |
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| 440 | return (month == 2 && is_leap_year(year)) ? 29 : lastday[month - 1]; |
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| 441 | } |
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| 442 | |
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[950a829] | 443 | extern void |
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[b5a3219] | 444 | read_date(int *py, int *pm, int *pd) |
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[950a829] | 445 | { |
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| 446 | int y = 0, m = 0, d = 0; |
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[029cc3f] | 447 | filepos fp; |
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[950a829] | 448 | |
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| 449 | skipblanks(); |
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[029cc3f] | 450 | |
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| 451 | get_pos(&fp); |
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| 452 | y = read_uint_internal(/*Expecting date, found `%s'*/198, &fp); |
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[e0c7cd1] | 453 | /* Two digit year is 19xx. */ |
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| 454 | if (y < 100) y += 1900; |
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| 455 | if (y < 1970 || y > 2037) { |
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| 456 | compile_error_skip(/*Invalid year (< 1970 or > 2037)*/58); |
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| 457 | LONGJMP(file.jbSkipLine); |
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| 458 | return; /* for brain-fried compilers */ |
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| 459 | } |
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[950a829] | 460 | if (ch == '.') { |
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| 461 | nextch(); |
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[029cc3f] | 462 | m = read_uint_internal(/*Expecting date, found `%s'*/198, &fp); |
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[e0c7cd1] | 463 | if (m < 1 || m > 12) { |
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| 464 | compile_error_skip(/*Invalid month*/86); |
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| 465 | LONGJMP(file.jbSkipLine); |
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| 466 | return; /* for brain-fried compilers */ |
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| 467 | } |
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[950a829] | 468 | if (ch == '.') { |
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| 469 | nextch(); |
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[029cc3f] | 470 | d = read_uint_internal(/*Expecting date, found `%s'*/198, &fp); |
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[e0c7cd1] | 471 | if (d < 1 || d > last_day(y, m)) { |
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[7926772] | 472 | compile_error_skip(/*Invalid day of the month*/87); |
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[e0c7cd1] | 473 | LONGJMP(file.jbSkipLine); |
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| 474 | return; /* for brain-fried compilers */ |
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| 475 | } |
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[950a829] | 476 | } |
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| 477 | } |
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[b5a3219] | 478 | if (py) *py = y; |
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| 479 | if (pm) *pm = m; |
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| 480 | if (pd) *pd = d; |
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[950a829] | 481 | } |
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