libopkg/pkg_vec.c

   1 /* pkg_vec.c - the opkg package management system
   2
   3    Steven M. Ayer
   4
   5    Copyright (C) 2002 Compaq Computer Corporation
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include "includes.h"
  19 #include <fnmatch.h>
  20 #include "xregex.h"
  21 #include "pkg.h"
  22 #include "opkg_message.h"
  23 #include "libbb/libbb.h"
  24
  25 pkg_vec_t * pkg_vec_alloc(void)
  26 {
  27     pkg_vec_t * vec = xcalloc(1, sizeof(pkg_vec_t));
  28     vec->pkgs = NULL;
  29     vec->len = 0;
  30
  31     return vec;
  32 }
  33
  34 void pkg_vec_free(pkg_vec_t *vec)
  35 {
  36     if (!vec)
  37       return;
  38
  39     if (vec->pkgs)
  40       free(vec->pkgs);
  41
  42     free(vec);
  43 }
  44
  45 /*
  46  * assumption: all names in a vector are identical
  47  * assumption: all version strings are trimmed,
  48  *             so identical versions have identical version strings,
  49  *             implying identical packages; let's marry these
  50  */
  51 void pkg_vec_insert_merge(pkg_vec_t *vec, pkg_t *pkg, int set_status)
  52 {
  53      int i;
  54      int found = 0;
  55
  56      /* look for a duplicate pkg by name, version, and architecture */
  57      for (i = 0; i < vec->len; i++){
  58          opkg_msg(DEBUG2, "%s %s arch=%s vs. %s %s arch=%s.\n",
  59                         pkg->name, pkg->version, pkg->architecture,
  60                         vec->pkgs[i]->name, vec->pkgs[i]->version,
  61                         vec->pkgs[i]->architecture);
  62           if ((strcmp(pkg->name, vec->pkgs[i]->name) == 0)
  63               && (pkg_compare_versions(pkg, vec->pkgs[i]) == 0)
  64               && (strcmp(pkg->architecture, vec->pkgs[i]->architecture) == 0)) {
  65                found  = 1;
  66                opkg_msg(DEBUG2, "Duplicate for pkg=%s version=%s arch=%s.\n",
  67                         pkg->name, pkg->version, pkg->architecture);
  68                break;
  69           }
  70      }
  71
  72      /* we didn't find one, add it */
  73      if (!found){
  74           opkg_msg(DEBUG2, "Adding new pkg=%s version=%s arch=%s.\n",
  75                         pkg->name, pkg->version, pkg->architecture);
  76           pkg_vec_insert(vec, pkg);
  77           return;
  78      }
  79
  80      /* update the one that we have */
  81      opkg_msg(DEBUG2, "Merging %s %s arch=%s, set_status=%d.\n",
  82                         pkg->name, pkg->version, pkg->architecture, set_status);
  83      if (set_status) {
  84           /* This is from the status file,
  85            * so need to merge with existing database */
  86           pkg_merge(pkg, vec->pkgs[i]);
  87      }
  88
  89      /* overwrite the old one */
  90      pkg_deinit(vec->pkgs[i]);
  91      free(vec->pkgs[i]);
  92      vec->pkgs[i] = pkg;
  93 }
  94
  95 void pkg_vec_insert(pkg_vec_t *vec, const pkg_t *pkg)
  96 {
  97     vec->pkgs = xrealloc(vec->pkgs, (vec->len + 1) * sizeof(pkg_t *));
  98     vec->pkgs[vec->len] = (pkg_t *)pkg;
  99     vec->len++;
 100 }
 101
 102 int pkg_vec_contains(pkg_vec_t *vec, pkg_t *apkg)
 103 {
 104      int i;
 105      for (i = 0; i < vec->len; i++)
 106           if (vec->pkgs[i] == apkg)
 107                return 1;
 108      return 0;
 109 }
 110
 111 void pkg_vec_sort(pkg_vec_t *vec, compare_fcn_t compar)
 112 {
 113      qsort(vec->pkgs, vec->len, sizeof(pkg_t *), compar);
 114 }
 115
 116 int pkg_vec_clear_marks(pkg_vec_t *vec)
 117 {
 118      int npkgs = vec->len;
 119      int i;
 120      for (i = 0; i < npkgs; i++) {
 121           pkg_t *pkg = vec->pkgs[i];
 122           pkg->state_flag &= ~SF_MARKED;
 123      }
 124      return 0;
 125 }
 126
 127 int pkg_vec_mark_if_matches(pkg_vec_t *vec, const char *pattern)
 128 {
 129      int matching_count = 0;
 130      pkg_t **pkgs = vec->pkgs;
 131      int npkgs = vec->len;
 132      int i;
 133      for (i = 0; i < npkgs; i++) {
 134           pkg_t *pkg = pkgs[i];
 135           if (fnmatch(pattern, pkg->name, 0)==0) {
 136                pkg->state_flag |= SF_MARKED;
 137                matching_count++;
 138           }
 139      }
 140      return matching_count;
 141 }
 142
 143
 144 abstract_pkg_vec_t * abstract_pkg_vec_alloc(void)
 145 {
 146     abstract_pkg_vec_t * vec ;
 147     vec = xcalloc(1, sizeof(abstract_pkg_vec_t));
 148     vec->pkgs = NULL;
 149     vec->len = 0;
 150
 151     return vec;
 152 }
 153
 154 void abstract_pkg_vec_free(abstract_pkg_vec_t *vec)
 155 {
 156     if (!vec)
 157       return;
 158     free(vec->pkgs);
 159     free(vec);
 160 }
 161
 162 /*
 163  * assumption: all names in a vector are unique
 164  */
 165 void abstract_pkg_vec_insert(abstract_pkg_vec_t *vec, abstract_pkg_t *pkg)
 166 {
 167     vec->pkgs = xrealloc(vec->pkgs, (vec->len + 1) * sizeof(abstract_pkg_t *));
 168     vec->pkgs[vec->len] = pkg;
 169     vec->len++;
 170 }
 171
 172 abstract_pkg_t * abstract_pkg_vec_get(abstract_pkg_vec_t *vec, int i)
 173 {
 174     if (vec->len > i)
 175         return vec->pkgs[i];
 176     else
 177         return NULL;
 178 }
 179
 180 int abstract_pkg_vec_contains(abstract_pkg_vec_t *vec, abstract_pkg_t *apkg)
 181 {
 182      int i;
 183      for (i = 0; i < vec->len; i++)
 184           if (vec->pkgs[i] == apkg)
 185                return 1;
 186      return 0;
 187 }
 188
 189 void abstract_pkg_vec_sort(pkg_vec_t *vec, compare_fcn_t compar)
 190 {
 191      qsort(vec->pkgs, vec->len, sizeof(pkg_t *), compar);
 192 }
 193
 194 int pkg_compare_names(const void *p1, const void *p2)
 195 {
 196   const pkg_t *pkg1 = *(const pkg_t **)p1;
 197   const pkg_t *pkg2 = *(const pkg_t **)p2;
 198   if (pkg1->name == NULL)
 199     return 1;
 200   if (pkg2->name == NULL)
 201     return -1;
 202   return(strcmp(pkg1->name, pkg2->name));
 203 }
 204