Lev Walkin | acd9f8b | 2004-08-19 13:29:03 +0000 | [diff] [blame] | 1 | #include "asn1c_internal.h" |
| 2 | #include "asn1c_fdeps.h" |
| 3 | |
| 4 | static asn1c_fdeps_t *asn1c_new_dep(const char *filename); |
| 5 | static int asn1c_dep_add(asn1c_fdeps_t *deps, asn1c_fdeps_t *d); |
| 6 | |
| 7 | int |
| 8 | asn1c_activate_dependency(asn1c_fdeps_t *deps, asn1c_fdeps_t *cur, const char *data) { |
| 9 | char *fname; |
| 10 | int i; |
| 11 | |
| 12 | if(!deps || !data || !*data) |
| 13 | return 0; |
| 14 | if(!cur) cur = deps; |
| 15 | |
| 16 | if(cur->used_somewhere) |
| 17 | return 1; /* Already activated */ |
| 18 | |
| 19 | (const char *)fname = data; |
| 20 | if(*data == '#') { |
| 21 | const char *start = data; |
| 22 | const char *end = 0; |
| 23 | |
| 24 | start = strchr(data, '<'); |
| 25 | if(start) { |
| 26 | start++; |
| 27 | end = strchr(start, '>'); |
| 28 | } |
| 29 | if(end) { |
| 30 | fname = alloca((end - start) + 1); |
| 31 | memcpy(fname, start, end - start); |
| 32 | fname[end-start] = '\0'; |
| 33 | } else { |
| 34 | return 0; |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | if(cur->filename && strcmp(cur->filename, fname) == 0) { |
| 39 | cur->used_somewhere = 1; |
| 40 | |
| 41 | /* Activate subdependencies */ |
| 42 | for(i = 0; i < cur->el_count; i++) { |
| 43 | asn1c_activate_dependency(deps, |
| 44 | cur->elements[i], |
| 45 | cur->elements[i]->filename); |
| 46 | } |
| 47 | |
| 48 | /* |
| 49 | * This might be a link to someplace else. |
| 50 | */ |
| 51 | return asn1c_activate_dependency(deps, NULL, fname); |
| 52 | } else { |
| 53 | for(i = 0; i < cur->el_count; i++) { |
| 54 | asn1c_activate_dependency(deps, |
| 55 | cur->elements[i], fname); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | asn1c_fdeps_t * |
| 63 | asn1c_read_file_dependencies(arg_t *arg, const char *datadir) { |
| 64 | asn1c_fdeps_t *deps; |
| 65 | asn1c_fdeps_t *cur; |
| 66 | char buf[4096]; |
| 67 | FILE *f; |
| 68 | int hit_COMMON_FILES = 0; |
| 69 | |
| 70 | (void)arg; |
| 71 | |
| 72 | if(!datadir || strlen(datadir) > sizeof(buf) / 2) { |
| 73 | errno = EINVAL; |
| 74 | return NULL; |
| 75 | } else { |
| 76 | sprintf(buf, "%s/file-dependencies", datadir); |
| 77 | } |
| 78 | |
| 79 | f = fopen(buf, "r"); |
| 80 | if(!f) return NULL; |
| 81 | |
| 82 | deps = asn1c_new_dep(0); |
| 83 | assert(deps); |
| 84 | |
| 85 | while(fgets(buf, sizeof(buf), f)) { |
| 86 | char *p = strchr(buf, '#'); |
| 87 | if(p) *p = '\0'; /* Remove comments */ |
| 88 | |
| 89 | cur = deps; |
| 90 | for(p = strtok(buf, " \t\r\n"); p; |
| 91 | p = strtok(NULL, " \t\r\n")) { |
| 92 | asn1c_fdeps_t *d; |
| 93 | /* |
| 94 | * If hit "COMMON-FILES:", treat everything else |
| 95 | * as a huge dependency. |
| 96 | */ |
| 97 | if(strcmp(p, "COMMON-FILES:") == 0) { |
| 98 | hit_COMMON_FILES = 1; |
| 99 | break; |
| 100 | } |
| 101 | d = asn1c_new_dep(p); |
| 102 | assert(d); |
| 103 | d->used_somewhere = hit_COMMON_FILES; |
| 104 | |
| 105 | if(asn1c_dep_add(cur, d) == 1) |
| 106 | cur = d; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | fclose(f); |
| 111 | |
| 112 | return deps; |
| 113 | } |
| 114 | |
| 115 | static asn1c_fdeps_t * |
| 116 | asn1c_new_dep(const char *filename) { |
| 117 | asn1c_fdeps_t *d; |
| 118 | |
| 119 | d = calloc(1, sizeof(*d)); |
| 120 | if(filename) { |
| 121 | d->filename = strdup(filename); |
| 122 | if(!d->filename) return NULL; |
| 123 | } |
| 124 | |
| 125 | return d; |
| 126 | } |
| 127 | |
| 128 | static int |
| 129 | asn1c_dep_add(asn1c_fdeps_t *deps, asn1c_fdeps_t *d) { |
| 130 | int n; |
| 131 | |
| 132 | /* Check for duplicates */ |
| 133 | for(n = 0; n < deps->el_count; n++) { |
| 134 | if(strcmp(deps->elements[n]->filename, d->filename) == 0) |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | if(deps->el_count == deps->el_size) { |
Lev Walkin | 3441a8b | 2004-08-19 13:45:27 +0000 | [diff] [blame] | 139 | void *p; |
Lev Walkin | acd9f8b | 2004-08-19 13:29:03 +0000 | [diff] [blame] | 140 | n = deps->el_size?deps->el_size << 2:16; |
Lev Walkin | 3441a8b | 2004-08-19 13:45:27 +0000 | [diff] [blame] | 141 | p = realloc(deps->elements, |
Lev Walkin | acd9f8b | 2004-08-19 13:29:03 +0000 | [diff] [blame] | 142 | n * sizeof(deps->elements[0])); |
| 143 | assert(p); |
| 144 | deps->elements = p; |
| 145 | deps->el_size = n; |
| 146 | } |
| 147 | |
| 148 | deps->elements[deps->el_count++] = d; |
| 149 | return 1; |
| 150 | } |
| 151 | |
| 152 | asn1c_fdeps_t * |
| 153 | asn1c_deps_makelist(asn1c_fdeps_t *deps) { |
| 154 | asn1c_fdeps_t *dlist; |
| 155 | asn1c_fdeps_t *d; |
| 156 | int i; |
| 157 | |
| 158 | if(!deps) { |
| 159 | errno = EINVAL; |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | dlist = asn1c_new_dep(0); |
| 164 | |
| 165 | if(deps->filename && deps->used_somewhere) { |
| 166 | d = asn1c_new_dep(deps->filename); |
| 167 | asn1c_dep_add(dlist, d); |
| 168 | } |
| 169 | |
| 170 | for(i = 0; i < deps->el_count; i++) { |
| 171 | int j; |
| 172 | d = asn1c_deps_makelist(deps->elements[i]); |
| 173 | assert(!d->filename); |
| 174 | for(j = 0; j < d->el_count; j++) { |
| 175 | asn1c_dep_add(dlist, d->elements[j]); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | return dlist; |
| 180 | } |
| 181 | |