| 1 | #include <malloc.h> |
| 2 | #include <stdio.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include "alloc.h" |
| 6 | #include "argument.h" |
| 7 | #include "debug.h" |
| 8 | #include "parser.h" |
| 9 | #include "stack.h" |
| 10 | #include "storage.h" |
| 11 | #include "tabular.h" |
| 12 | #include "workspace.h" |
| 13 | |
| 14 | #include "program.h" |
| 15 | |
| 16 | /* global variables */ |
| 17 | |
| 18 | workspace_t **programs = NULL; |
| 19 | int nb_programs = 0; |
| 20 | |
| 21 | /* lookfor program id */ |
| 22 | |
| 23 | int lookfor_program (int id) |
| 24 | { |
| 25 | int i; |
| 26 | for (i = 0; (programs) && (i < nb_programs); i++) { |
| 27 | if (programs[i]->id == id) { |
| 28 | return i; |
| 29 | } |
| 30 | } |
| 31 | return -1; |
| 32 | } |
| 33 | |
| 34 | /* program function */ |
| 35 | |
| 36 | void prog (int id, element_t *root) |
| 37 | { |
| 38 | int n = -1; |
| 39 | |
| 40 | if (programs == NULL) { |
| 41 | |
| 42 | /* initial memory allocation */ |
| 43 | programs = (workspace_t **) callocordie (1, sizeof (workspace_t *)); |
| 44 | n = 0; |
| 45 | nb_programs = 1; |
| 46 | programs[n] = alloc_ws (); |
| 47 | |
| 48 | } else { |
| 49 | |
| 50 | /* look for existing program */ |
| 51 | n = lookfor_program (id); |
| 52 | if (n == -1) { |
| 53 | |
| 54 | /* new program */ |
| 55 | n = nb_programs++; |
| 56 | workspace_t **tmp = (workspace_t **) callocordie (nb_programs, sizeof (workspace_t *)); |
| 57 | memcpy (tmp, programs, (nb_programs - 1) * sizeof (workspace_t *)); |
| 58 | free (programs); |
| 59 | programs = tmp; |
| 60 | programs[n] = alloc_ws (); |
| 61 | |
| 62 | } else { |
| 63 | |
| 64 | /* clean old program */ |
| 65 | clean_ws(programs[n]); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | /* set program */ |
| 70 | programs[n]->id = id; |
| 71 | programs[n]->root = dupelement (root); |
| 72 | } |
| 73 | |
| 74 | double call (int id, int nbargs, element_t **args) |
| 75 | { |
| 76 | double ret = 0; |
| 77 | |
| 78 | /* look for program */ |
| 79 | int n = lookfor_program (id); |
| 80 | if (n == -1) { |
| 81 | VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | /* backup context */ |
| 86 | workspace_t *tmp = backup_ws (alloc_ws ()); |
| 87 | restore_ws (programs[n]); |
| 88 | |
| 89 | /* set arguments */ |
| 90 | free_tab (argument); |
| 91 | argument = NULL; |
| 92 | if (nbargs > 0) { |
| 93 | def (nbargs, args); |
| 94 | } |
| 95 | |
| 96 | /* evaluate program */ |
| 97 | answer = 0; |
| 98 | element_t *elements = dupelement (programs[n]->root); |
| 99 | ret = evaluate_element (elements, 0); |
| 100 | delelement (elements); |
| 101 | |
| 102 | /* clean arguments */ |
| 103 | free_tab (argument); |
| 104 | argument = NULL; |
| 105 | |
| 106 | /* restore context */ |
| 107 | backup_ws (programs[n]); |
| 108 | restore_ws (tmp); |
| 109 | free_ws (tmp); |
| 110 | |
| 111 | return ret; |
| 112 | } |
| 113 | |
| 114 | void list () |
| 115 | { |
| 116 | int i; |
| 117 | fprintf (stdout, "programs:"); |
| 118 | for (i = 0; i < nb_programs; i++) { |
| 119 | fprintf (stdout, " %d", programs[i]->id); |
| 120 | } |
| 121 | fprintf (stdout, "\n"); |
| 122 | } |
| 123 | |
| 124 | void edit (int id) |
| 125 | { |
| 126 | int n = lookfor_program (id); |
| 127 | if (n == -1) { |
| 128 | VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 129 | return; |
| 130 | } |
| 131 | |
| 132 | /* set string program */ |
| 133 | fprintf (stdout, "edit: %s\n", programs[n]->string); |
| 134 | } |
| 135 | |
| 136 | void savestring (int id, char *string) |
| 137 | { |
| 138 | int n = lookfor_program (id); |
| 139 | |
| 140 | /* unnecesary code */ |
| 141 | //if (n == -1) { |
| 142 | // VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 143 | // return; |
| 144 | //} |
| 145 | //if (programs[n]->string) { |
| 146 | // free (programs[n]->string); |
| 147 | //} |
| 148 | |
| 149 | if (string) { |
| 150 | programs[n]->string = strdup (string); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | void del (int id) |
| 155 | { |
| 156 | int n = lookfor_program (id); |
| 157 | if (n == -1) { |
| 158 | VERBOSE (WARNING, fprintf (stdout, "error unknown program (%d)\n", id)); |
| 159 | return; |
| 160 | } |
| 161 | |
| 162 | /* clean program */ |
| 163 | free_ws (programs[n]); |
| 164 | |
| 165 | /* remove entry */ |
| 166 | workspace_t **tmp = (workspace_t **) callocordie (nb_programs - 1, sizeof (workspace_t *)); |
| 167 | memcpy (tmp, programs, n * sizeof (workspace_t *)); |
| 168 | memcpy (tmp + n, programs + n + 1, (nb_programs - n - 1) * sizeof (workspace_t *)); |
| 169 | nb_programs--; |
| 170 | free (programs); |
| 171 | programs = tmp; |
| 172 | } |
| 173 | |
| 174 | /* vim: set ts=4 sw=4 et: */ |