Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | /* * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com> * * Licensed under the GPLv2. */ #include "strlist.h" #include "util.h" #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> static struct rb_node *strlist__node_new(struct rblist *rblist, const void *entry) { const char *s = entry; struct rb_node *rc = NULL; struct strlist *strlist = container_of(rblist, struct strlist, rblist); struct str_node *snode = malloc(sizeof(*snode)); if (snode != NULL) { if (strlist->dupstr) { s = strdup(s); if (s == NULL) goto out_delete; } snode->s = s; rc = &snode->rb_node; } return rc; out_delete: free(snode); return NULL; } static void str_node__delete(struct str_node *snode, bool dupstr) { if (dupstr) zfree((char **)&snode->s); free(snode); } static void strlist__node_delete(struct rblist *rblist, struct rb_node *rb_node) { struct strlist *slist = container_of(rblist, struct strlist, rblist); struct str_node *snode = container_of(rb_node, struct str_node, rb_node); str_node__delete(snode, slist->dupstr); } static int strlist__node_cmp(struct rb_node *rb_node, const void *entry) { const char *str = entry; struct str_node *snode = container_of(rb_node, struct str_node, rb_node); return strcmp(snode->s, str); } int strlist__add(struct strlist *slist, const char *new_entry) { return rblist__add_node(&slist->rblist, new_entry); } int strlist__load(struct strlist *slist, const char *filename) { char entry[1024]; int err; FILE *fp = fopen(filename, "r"); if (fp == NULL) return -errno; while (fgets(entry, sizeof(entry), fp) != NULL) { const size_t len = strlen(entry); if (len == 0) continue; entry[len - 1] = '\0'; err = strlist__add(slist, entry); if (err != 0) goto out; } err = 0; out: fclose(fp); return err; } void strlist__remove(struct strlist *slist, struct str_node *snode) { rblist__remove_node(&slist->rblist, &snode->rb_node); } struct str_node *strlist__find(struct strlist *slist, const char *entry) { struct str_node *snode = NULL; struct rb_node *rb_node = rblist__find(&slist->rblist, entry); if (rb_node) snode = container_of(rb_node, struct str_node, rb_node); return snode; } static int strlist__parse_list_entry(struct strlist *slist, const char *s, const char *subst_dir) { int err; char *subst = NULL; if (strncmp(s, "file://", 7) == 0) return strlist__load(slist, s + 7); if (subst_dir) { err = -ENOMEM; if (asprintf(&subst, "%s/%s", subst_dir, s) < 0) goto out; if (access(subst, F_OK) == 0) { err = strlist__load(slist, subst); goto out; } if (slist->file_only) { err = -ENOENT; goto out; } } err = strlist__add(slist, s); out: free(subst); return err; } static int strlist__parse_list(struct strlist *slist, const char *s, const char *subst_dir) { char *sep; int err; while ((sep = strchr(s, ',')) != NULL) { *sep = '\0'; err = strlist__parse_list_entry(slist, s, subst_dir); *sep = ','; if (err != 0) return err; s = sep + 1; } return *s ? strlist__parse_list_entry(slist, s, subst_dir) : 0; } struct strlist *strlist__new(const char *list, const struct strlist_config *config) { struct strlist *slist = malloc(sizeof(*slist)); if (slist != NULL) { bool dupstr = true; bool file_only = false; const char *dirname = NULL; if (config) { dupstr = !config->dont_dupstr; dirname = config->dirname; file_only = config->file_only; } rblist__init(&slist->rblist); slist->rblist.node_cmp = strlist__node_cmp; slist->rblist.node_new = strlist__node_new; slist->rblist.node_delete = strlist__node_delete; slist->dupstr = dupstr; slist->file_only = file_only; if (list && strlist__parse_list(slist, list, dirname) != 0) goto out_error; } return slist; out_error: free(slist); return NULL; } void strlist__delete(struct strlist *slist) { if (slist != NULL) rblist__delete(&slist->rblist); } struct str_node *strlist__entry(const struct strlist *slist, unsigned int idx) { struct str_node *snode = NULL; struct rb_node *rb_node; rb_node = rblist__entry(&slist->rblist, idx); if (rb_node) snode = container_of(rb_node, struct str_node, rb_node); return snode; } |