opkg: re-arrange source code into sub-directories

git-svn-id: http://opkg.googlecode.com/svn/trunk@33 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

1 files changed, 0 insertions, 1033 deletions

diff --git a/pkg_depends.c b/pkg_depends.c
deleted file mode 100644
index 7ebd04e..0000000
--- a/pkg_depends.c
+++ /dev/null
@@ -1,1033 +0,0 @@
-/* pkg_depends.c - the itsy package management system
-
-   Steven M. Ayer
-   
-   Copyright (C) 2002 Compaq Computer Corporation
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License as
-   published by the Free Software Foundation; either version 2, or (at
-   your option) any later version.
-
-   This program is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
-*/
-
-#include "opkg.h"
-#include <errno.h>
-#include <ctype.h>
-   
-#include "pkg.h"
-#include "opkg_utils.h"
-#include "pkg_hash.h"
-#include "opkg_message.h"
-#include "pkg_parse.h"
-#include "hash_table.h"
-
-static int parseDepends(compound_depend_t *compound_depend, hash_table_t * hash, char * depend_str);
-static depend_t * depend_init(void);
-static void depend_deinit(depend_t *d);
-static char ** add_unresolved_dep(pkg_t * pkg, char ** the_lost, int ref_ndx);
-static char ** merge_unresolved(char ** oldstuff, char ** newstuff);
-static int is_pkg_in_pkg_vec(pkg_vec_t * vec, pkg_t * pkg);
-
-static int pkg_installed_and_constraint_satisfied(pkg_t *pkg, void *cdata)
-{
-     depend_t *depend = (depend_t *)cdata;
-     if ((pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED) && version_constraints_satisfied(depend, pkg))
-	  return 1;
-     else
-	  return 0;
-}
-
-static int pkg_constraint_satisfied(pkg_t *pkg, void *cdata)
-{
-     depend_t *depend = (depend_t *)cdata;
-#if 0
-     pkg_t * temp = pkg_new();
-     int comparison;
-     parseVersion(temp, depend->version);
-     comparison = pkg_compare_versions(pkg, temp);
-     free(temp);
-
-     fprintf(stderr, "%s: pkg=%s pkg->version=%s constraint=%p type=%d version=%s comparison=%d satisfied=%d\n", 
-	     __FUNCTION__, pkg->name, pkg->version, 
-	     depend, depend->constraint, depend->version,
-	     comparison, version_constraints_satisfied(depend, pkg));
-#endif
-     if (version_constraints_satisfied(depend, pkg))
-	  return 1;
-     else
-	  return 0;
-}
-
-/* returns ndependences or negative error value */ 
-int pkg_hash_fetch_unsatisfied_dependencies(opkg_conf_t *conf, pkg_t * pkg, 
-					    pkg_vec_t *unsatisfied, char *** unresolved)
-{
-     pkg_t * satisfier_entry_pkg;
-     register int i, j, k;
-     int count, found;
-     char ** the_lost;
-     abstract_pkg_t * ab_pkg;
-
-     /* 
-      * this is a setup to check for redundant/cyclic dependency checks, 
-      * which are marked at the abstract_pkg level
-      */
-     if (!(ab_pkg = pkg->parent)) {
-	  fprintf(stderr, "%s:%d: something terribly wrong with pkg %s\n", __FUNCTION__, __LINE__, pkg->name);
-	  *unresolved = NULL;
-	  return 0;
-     }
-     if (ab_pkg->dependencies_checked) {    /* avoid duplicate or cyclic checks */
-	  *unresolved = NULL;
-	  return 0;
-     } else { 
-	  ab_pkg->dependencies_checked = 1;  /* mark it for subsequent visits */
-     }
-     /**/
-
-     count = pkg->pre_depends_count + pkg->depends_count + pkg->recommends_count + pkg->suggests_count;
-     if (!count){
-	  *unresolved = NULL;
-	  return 0;
-     }
-
-     the_lost = NULL;
-	
-     /* foreach dependency */
-     for (i = 0; i < count; i++) {
-	  compound_depend_t * compound_depend = &pkg->depends[i];
-	  depend_t ** possible_satisfiers = compound_depend->possibilities;;
-	  found = 0;
-	  satisfier_entry_pkg = NULL;
-
-	  if (compound_depend->type == GREEDY_DEPEND) {
-	       /* foreach possible satisfier */
-	       for (j = 0; j < compound_depend->possibility_count; j++) {
-		    /* foreach provided_by, which includes the abstract_pkg itself */
-		    abstract_pkg_t *abpkg = possible_satisfiers[j]->pkg;
-		    abstract_pkg_vec_t *ab_provider_vec = abpkg->provided_by;
-		    int nposs = ab_provider_vec->len;
-		    abstract_pkg_t **ab_providers = ab_provider_vec->pkgs; 
-		    int l;
-		    for (l = 0; l < nposs; l++) {
-			 pkg_vec_t *test_vec = ab_providers[l]->pkgs;
-			 /* if no depends on this one, try the first package that Provides this one */
-			 if (!test_vec){   /* no pkg_vec hooked up to the abstract_pkg!  (need another feed?) */
-			      continue;
-			 }
-	      
-			 /* cruise this possiblity's pkg_vec looking for an installed version */
-			 for (k = 0; k < test_vec->len; k++) {
-			      pkg_t *pkg_scout = test_vec->pkgs[k];
-			      /* not installed, and not already known about? */
-			      if ((pkg_scout->state_want != SW_INSTALL)
-				  && !pkg_scout->parent->dependencies_checked
-				  && !is_pkg_in_pkg_vec(unsatisfied, pkg_scout)) {
-				   char ** newstuff = NULL;
-				   int rc;
-				   pkg_vec_t *tmp_vec = pkg_vec_alloc ();
-				   /* check for not-already-installed dependencies */
-				   rc = pkg_hash_fetch_unsatisfied_dependencies(conf, 
-										pkg_scout, 
-										tmp_vec,
-										&newstuff);
-				   if (newstuff == NULL) {
-					int i;
-					int ok = 1;
-					for (i = 0; i < rc; i++) {
-					    pkg_t *p = tmp_vec->pkgs[i];
-					    if (p->state_want == SW_INSTALL)
-						continue;
-					    opkg_message(conf, OPKG_DEBUG, "not installing %s due to requirement for %s\n", pkg_scout->name, p->name);
-					    ok = 0;
-					    break;
-					}
-					pkg_vec_free (tmp_vec);
-					if (ok) {
-					    /* mark this one for installation */
-					    opkg_message(conf, OPKG_NOTICE, "Adding satisfier for greedy dependence: %s\n", pkg_scout->name);
-					    pkg_vec_insert(unsatisfied, pkg_scout);
-					}
-				   } else  {
-					opkg_message(conf, OPKG_DEBUG, "not installing %s due to broken depends \n", pkg_scout->name);
-					free (newstuff);
-				   }
-			      }
-			 }
-		    }
-	       }
-
-	       continue;
-	  }
-
-	  /* foreach possible satisfier, look for installed package  */
-	  for (j = 0; j < compound_depend->possibility_count; j++) {
-	       /* foreach provided_by, which includes the abstract_pkg itself */
-	       depend_t *dependence_to_satisfy = possible_satisfiers[j];
-	       abstract_pkg_t *satisfying_apkg = possible_satisfiers[j]->pkg;
-	       pkg_t *satisfying_pkg = 
-		    pkg_hash_fetch_best_installation_candidate(conf, satisfying_apkg, 
-							       pkg_installed_and_constraint_satisfied, 
-							       dependence_to_satisfy, 1);
-               /* Being that I can't test constraing in pkg_hash, I will test it here */
-	       if (satisfying_pkg != NULL) {
-                  if (!pkg_installed_and_constraint_satisfied ( satisfying_pkg,dependence_to_satisfy)) {
-	              satisfying_pkg = NULL;
-                  }
-               }
-	       opkg_message(conf, OPKG_DEBUG, "%s:%d: satisfying_pkg=%p \n", __FILE__, __LINE__, satisfying_pkg);
-	       if (satisfying_pkg != NULL) {
-		    found = 1;
-		    break;
-	       }
-
-	  }
-	  /* if nothing installed matches, then look for uninstalled satisfier */
-	  if (!found) {
-	       /* foreach possible satisfier, look for installed package  */
-	       for (j = 0; j < compound_depend->possibility_count; j++) {
-		    /* foreach provided_by, which includes the abstract_pkg itself */
-		    depend_t *dependence_to_satisfy = possible_satisfiers[j];
-		    abstract_pkg_t *satisfying_apkg = possible_satisfiers[j]->pkg;
-		    pkg_t *satisfying_pkg = 
-			 pkg_hash_fetch_best_installation_candidate(conf, satisfying_apkg, 
-								    pkg_constraint_satisfied, 
-								    dependence_to_satisfy, 1);
-                    /* Being that I can't test constraing in pkg_hash, I will test it here too */
-	            if (satisfying_pkg != NULL) {
-                         if (!pkg_constraint_satisfied ( satisfying_pkg,dependence_to_satisfy)) {
-                            satisfying_pkg = NULL;
-                         }
-                    }
-
-		    /* user request overrides package recommendation */
-		    if (satisfying_pkg != NULL
-			&& (compound_depend->type == RECOMMEND || compound_depend->type == SUGGEST)
-			&& (satisfying_pkg->state_want == SW_DEINSTALL || satisfying_pkg->state_want == SW_PURGE)) {
-			 opkg_message (conf, OPKG_NOTICE, "%s: ignoring recommendation for %s at user request\n",
-				       pkg->name, satisfying_pkg->name);
-			 continue;
-		    }
-
-		    opkg_message(conf, OPKG_DEBUG, "%s:%d: satisfying_pkg=%p\n", __FILE__, __LINE__, satisfying_pkg);
-		    if (satisfying_pkg != NULL) {
-			 satisfier_entry_pkg = satisfying_pkg;
-			 break;
-		    }
-	       }
-	  }
-
-	  /* we didn't find one, add something to the unsatisfied vector */
-	  if (!found) {
-	       if (!satisfier_entry_pkg) {
-		    /* failure to meet recommendations is not an error */
-		    if (compound_depend->type != RECOMMEND && compound_depend->type != SUGGEST)
-			 the_lost = add_unresolved_dep(pkg, the_lost, i);
-		    else
-			 opkg_message (conf, OPKG_NOTICE, "%s: unsatisfied recommendation for %s\n",
-				       pkg->name, compound_depend->possibilities[0]->pkg->name);
-	       }
-	       else {
-		    if (compound_depend->type == SUGGEST) {
-			 /* just mention it politely */
-			 opkg_message (conf, OPKG_NOTICE, "package %s suggests installing %s\n",
-				       pkg->name, satisfier_entry_pkg->name);
-		    } else {
-			 char ** newstuff = NULL;
-			 
-			 if (satisfier_entry_pkg != pkg &&
-			     !is_pkg_in_pkg_vec(unsatisfied, satisfier_entry_pkg)) {
-			      pkg_vec_insert(unsatisfied, satisfier_entry_pkg);
-			      pkg_hash_fetch_unsatisfied_dependencies(conf, 
-								      satisfier_entry_pkg, 
-								      unsatisfied,
-								      &newstuff);
-			      the_lost = merge_unresolved(the_lost, newstuff);
-			 }
-		    }
-	       }
-	  }
-     }
-     *unresolved = the_lost;
-
-     return unsatisfied->len;
-}
-
-/*checking for conflicts !in replaces 
-  If a packages conflicts with another but is also replacing it, I should not consider it a 
-  really conflicts 
-  returns 0 if conflicts <> replaces or 1 if conflicts == replaces 
-*/
-int is_pkg_a_replaces(pkg_t *pkg_scout,pkg_t *pkg)
-{
-    int i ;
-    int replaces_count = pkg->replaces_count;
-    abstract_pkg_t **replaces;
-
-    if (pkg->replaces_count==0)    // No replaces, it's surely a conflict
-        return 0;
-
-    replaces = pkg->replaces;
-
-    for (i = 0; i < replaces_count; i++) {
-        if (strcmp(pkg_scout->name,pkg->replaces[i]->name)==0) {      // Found
-            opkg_message(NULL, OPKG_DEBUG2, "Seems I've found a replace %s %s \n",pkg_scout->name,pkg->replaces[i]->name);
-            return 1;
-        }
-    }
-    return 0;
-
-}
-
-
-/* Abhaya: added support for conflicts */
-pkg_vec_t * pkg_hash_fetch_conflicts(hash_table_t * hash, pkg_t * pkg)
-{
-    pkg_vec_t * installed_conflicts, * test_vec;
-    compound_depend_t * conflicts;
-    depend_t ** possible_satisfiers;
-    depend_t * possible_satisfier;
-    register int i, j, k;
-    int count;
-    abstract_pkg_t * ab_pkg;
-    pkg_t **pkg_scouts; 
-    pkg_t *pkg_scout; 
-
-    /* 
-     * this is a setup to check for redundant/cyclic dependency checks, 
-     * which are marked at the abstract_pkg level
-     */
-    if(!(ab_pkg = pkg->parent)){
-	fprintf(stderr, "dependency check error.  pkg %s isn't in hash table\n", pkg->name);
-	return (pkg_vec_t *)NULL;
-    }
-
-    conflicts = pkg->conflicts;
-    if(!conflicts){
-	return (pkg_vec_t *)NULL;
-    }
-    installed_conflicts = pkg_vec_alloc();
-
-    count = pkg->conflicts_count;
-
-
-
-    /* foreach conflict */
-    for(i = 0; i < pkg->conflicts_count; i++){
-
-	possible_satisfiers = conflicts->possibilities;
-
-	/* foreach possible satisfier */
-	for(j = 0; j < conflicts->possibility_count; j++){
-            possible_satisfier = possible_satisfiers[j];
-            if (!possible_satisfier)
-                fprintf(stderr, "%s:%d: possible_satisfier is null\n", __FUNCTION__, __LINE__);
-            if (!possible_satisfier->pkg)
-                fprintf(stderr, "%s:%d: possible_satisfier->pkg is null\n", __FUNCTION__, __LINE__);
-	    test_vec = possible_satisfier->pkg->pkgs;
-	    if (test_vec) {
-                /* pkg_vec found, it is an actual package conflict
-		 * cruise this possiblity's pkg_vec looking for an installed version */
-		pkg_scouts = test_vec->pkgs;
-		for(k = 0; k < test_vec->len; k++){
-                    pkg_scout = pkg_scouts[k];
-                    if (!pkg_scout) {
-                        fprintf(stderr,  "%s: null pkg scout\n", __FUNCTION__);
-                        continue; 
-                    }
-		    if ((pkg_scout->state_status == SS_INSTALLED || pkg_scout->state_want == SW_INSTALL) &&
-		       version_constraints_satisfied(possible_satisfier, pkg_scout) && !is_pkg_a_replaces(pkg_scout,pkg)){
- 	 	        if (!is_pkg_in_pkg_vec(installed_conflicts, pkg_scout)){
-			    pkg_vec_insert(installed_conflicts, pkg_scout);
-			}
-		    }
-		}
-	    }
-	}
-	conflicts++;
-    }
-
-    if (installed_conflicts->len)
-	    return installed_conflicts;
-    pkg_vec_free(installed_conflicts);
-	return (pkg_vec_t *)NULL;
-}
-
-int version_constraints_satisfied(depend_t * depends, pkg_t * pkg)
-{
-    pkg_t * temp;
-    int comparison;
-
-    if(depends->constraint == NONE)
-	return 1;
-
-    temp = pkg_new();
-
-    parseVersion(temp, depends->version);
-
-    comparison = pkg_compare_versions(pkg, temp);
-
-    free(temp);
-
-    if((depends->constraint == EARLIER) && 
-       (comparison < 0))
-	return 1;
-    else if((depends->constraint == LATER) && 
-	    (comparison > 0))
-	return 1;
-    else if(comparison == 0)
-	return 1;
-    else if((depends->constraint == LATER_EQUAL) && 
-	    (comparison >= 0))
-	return 1;
-    else if((depends->constraint == EARLIER_EQUAL) && 
-	    (comparison <= 0))
-	return 1;
-    
-    return 0;
-}
-
-int pkg_dependence_satisfiable(opkg_conf_t *conf, depend_t *depend)
-{
-     abstract_pkg_t *apkg = depend->pkg;
-     abstract_pkg_vec_t *provider_apkgs = apkg->provided_by;
-     int n_providers = provider_apkgs->len;
-     abstract_pkg_t **apkgs = provider_apkgs->pkgs;
-     pkg_vec_t *pkg_vec;
-     int n_pkgs ; 
-     int i;
-     int j;
-
-     for (i = 0; i < n_providers; i++) {
-	  abstract_pkg_t *papkg = apkgs[i];
-	  pkg_vec = papkg->pkgs;
-	  if (pkg_vec) {
-	       n_pkgs = pkg_vec->len;
-	       for (j = 0; j < n_pkgs; j++) {
-		    pkg_t *pkg = pkg_vec->pkgs[j];
-		    if (version_constraints_satisfied(depend, pkg)) {
-			 return 1;
-		    }
-	       }
-	  }
-     }
-     return 0;
-}
-
-int pkg_dependence_satisfied(opkg_conf_t *conf, depend_t *depend)
-{
-     abstract_pkg_t *apkg = depend->pkg;
-     abstract_pkg_vec_t *provider_apkgs = apkg->provided_by;
-     int n_providers = provider_apkgs->len;
-     abstract_pkg_t **apkgs = provider_apkgs->pkgs;
-     int i;
-     int n_pkgs;
-     int j;
-
-     for (i = 0; i < n_providers; i++) {
-	  abstract_pkg_t *papkg = apkgs[i];
-	  pkg_vec_t *pkg_vec = papkg->pkgs;
-	  if (pkg_vec) {
-	       n_pkgs = pkg_vec->len;
-	       for (j = 0; j < n_pkgs; j++) {
-		    pkg_t *pkg = pkg_vec->pkgs[j];
-		    if (version_constraints_satisfied(depend, pkg)) {
-			 if (pkg->state_status == SS_INSTALLED || pkg->state_status == SS_UNPACKED)
-			      return 1;
-		    }
-	       }
-	  }
-     }
-     return 0;
-}
-
-static int is_pkg_in_pkg_vec(pkg_vec_t * vec, pkg_t * pkg)
-{
-    register int i;
-    pkg_t ** pkgs = vec->pkgs;
-
-    for(i = 0; i < vec->len; i++)
-	if((strcmp(pkg->name, (*(pkgs + i))->name) == 0)
-	   && (pkg_compare_versions(pkg, *(pkgs + i)) == 0)
-	   && (strcmp(pkg->architecture, (*(pkgs + i))->architecture) == 0))
-	    return 1;
-    return 0;
-}
-
-
-#ifdef DeadCode
-/**
- * pkg_has_common_provides returns 1 if pkg and replacee both provide
- * the same abstract package and 0 otherwise.
- */
-int pkg_has_common_provides(pkg_t *pkg, pkg_t *replacee)
-{
-     abstract_pkg_t **provides = pkg->provides;
-     int provides_count = pkg->provides_count;
-     abstract_pkg_t **replacee_provides = replacee->provides;
-     int replacee_provides_count = replacee->provides_count;
-     int i, j;
-     for (i = 0; i < provides_count; i++) {
-	  abstract_pkg_t *apkg = provides[i];
-	  for (j = 0; j < replacee_provides_count; j++) {
-	       abstract_pkg_t *replacee_apkg = replacee_provides[i];
-	       if (apkg == replacee_apkg)
-		    return 1;
-	  }
-     }
-     return 0;
-}
-#endif
-
-/**
- * pkg_provides_abstract returns 1 if pkg->provides contains providee
- * and 0 otherwise.
- */
-int pkg_provides_abstract(pkg_t *pkg, abstract_pkg_t *providee)
-{
-     abstract_pkg_t **provides = pkg->provides;
-     int provides_count = pkg->provides_count;
-     int i;
-     for (i = 0; i < provides_count; i++) {
-	  if (provides[i] == providee)
-	       return 1;
-     }
-     return 0;
-}
-
-/**
- * pkg_replaces returns 1 if pkg->replaces contains one of replacee's provides and 0
- * otherwise.
- */
-int pkg_replaces(pkg_t *pkg, pkg_t *replacee)
-{
-     abstract_pkg_t **replaces = pkg->replaces;
-     int replaces_count = pkg->replaces_count;
-     /* abstract_pkg_t **replacee_provides = pkg->provides;
-     int replacee_provides_count = pkg->provides_count; */
-     int i, j;
-     for (i = 0; i < replaces_count; i++) {
-	  abstract_pkg_t *abstract_replacee = replaces[i];
-	  for (j = 0; j < replaces_count; j++) {
-   /*            opkg_message(NULL, OPKG_DEBUG2, "Searching pkg-name %s repprovname %s absrepname %s \n",
-                 pkg->name,replacee->provides[j]->name, abstract_replacee->name); */
-	       if (replacee->provides[j] == abstract_replacee)
-		    return 1;
-	  }
-     }
-     return 0;
-}
-
-
-/**
- * pkg_conflicts_abstract returns 1 if pkg->conflicts contains conflictee and 0
- * otherwise.
- */
-int pkg_conflicts_abstract(pkg_t *pkg, abstract_pkg_t *conflictee)
-{
-     compound_depend_t *conflicts = pkg->conflicts;
-     int conflicts_count = pkg->conflicts_count;
-     int i, j;
-     for (i = 0; i < conflicts_count; i++) {
-	  int possibility_count = conflicts[i].possibility_count;
-	  struct depend **possibilities = conflicts[i].possibilities;
-	  for (j = 0; j < possibility_count; j++) {
-	       if (possibilities[j]->pkg == conflictee) {
-		    return 1;
-	       }
-	  }
-     }
-     return 0;
-}
-
-/**
- * pkg_conflicts returns 1 if pkg->conflicts contains one of
- * conflictee's provides and 0 otherwise.
- */
-int pkg_conflicts(pkg_t *pkg, pkg_t *conflictee)
-{
-     compound_depend_t *conflicts = pkg->conflicts;
-     int conflicts_count = pkg->conflicts_count;
-     abstract_pkg_t **conflictee_provides = conflictee->provides;
-     int conflictee_provides_count = conflictee->provides_count;
-     int i, j, k;
-     int possibility_count;
-     struct depend **possibilities;
-     abstract_pkg_t *possibility ;
-
-     for (i = 0; i < conflicts_count; i++) {
-	  possibility_count = conflicts[i].possibility_count;
-	  possibilities = conflicts[i].possibilities;
-	  for (j = 0; j < possibility_count; j++) {
-	       possibility = possibilities[j]->pkg;
-	       for (k = 0; k < conflictee_provides_count; k++) {
-		    if (possibility == conflictee_provides[k]) {
-			 return 1;
-		    }
-	       }
-	  }
-     }
-     return 0;
-}
-
-static char ** merge_unresolved(char ** oldstuff, char ** newstuff)
-{
-    int oldlen = 0, newlen = 0;
-    char ** result;
-    register int i, j;
-
-    if(!newstuff)
-	return oldstuff;
-    
-    while(oldstuff && oldstuff[oldlen]) oldlen++;
-    while(newstuff && newstuff[newlen]) newlen++;
-    
-    result = (char **)realloc(oldstuff, sizeof(char *) * (oldlen + newlen + 1));
-    if (result == NULL) {
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return NULL;
-    }
-    
-    for(i = oldlen, j = 0; i < (oldlen + newlen); i++, j++)
-	*(result + i) = *(newstuff + j);
-    
-    *(result + i) = NULL;
-
-    return result;
-}
-    
-/* 
- * a kinda kludgy way to back out depends str from two different arrays (reg'l'r 'n pre)
- * this is null terminated, no count is carried around 
- */
-char ** add_unresolved_dep(pkg_t * pkg, char ** the_lost, int ref_ndx)
-{
-    int count;
-    char ** resized;
-    char *depend_str = pkg_depend_str(pkg, ref_ndx);
-
-    count = 0;
-    while(the_lost && the_lost[count]) count++;
-
-    count++;  /* need one to hold the null */
-    resized = (char **)realloc(the_lost, sizeof(char *) * (count + 1));
-    if (resized == NULL) {
-       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-       return NULL;
-    }
-    resized[count - 1] = strdup(depend_str);
-    resized[count] = NULL;
-    
-    return resized;
-}
-	
-void printDepends(pkg_t * pkg)
-{
-    register int i, j;
-    compound_depend_t * depend;
-    int count;
-    
-    count = pkg->pre_depends_count + pkg->depends_count;
-    
-    depend = pkg->depends;
-    if(!depend){
-	fprintf(stderr, "Depends pointer is NULL\n");
-	return;
-    }
-    for(i = 0; i < count; i++){
-	fprintf(stderr, "%s has %d possibilities:\n", 
-		(depend->type == GREEDY_DEPEND) ? "Greedy-Depend" : ((depend->type == DEPEND) ? "Depend" : "Pre-Depend"),
-		depend->possibility_count);
-	for(j = 0; j < depend->possibility_count; j++)
-	    fprintf(stderr, "\t%s version %s (%d)\n",
-		    depend->possibilities[j]->pkg->name,
-		    depend->possibilities[j]->version,
-		    depend->possibilities[j]->constraint);
-	depend++;
-    }
-}
-
-int buildProvides(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
-{
-    register int i, j;
-
-    /* every pkg provides itself */
-    abstract_pkg_vec_insert(ab_pkg->provided_by, ab_pkg);
-
-    if (!pkg->provides_count)
-      return 0;
-
-    pkg->provides = (abstract_pkg_t **)malloc(sizeof(abstract_pkg_t *) * (pkg->provides_count + 1));
-    if (pkg->provides == NULL) {
-       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-       return -1 ;
-    }
-    pkg->provides[0] = ab_pkg;
-
-    // if (strcmp(ab_pkg->name, pkg->name))
-    //     fprintf(stderr, __FUNCTION__ ": ab_pkg=%s pkg=%s\n", ab_pkg->name, pkg->name);
-
-    for(i = 0; i < pkg->provides_count; i++){
-	 abstract_pkg_t *provided_abpkg = ensure_abstract_pkg_by_name(hash, pkg->provides_str[i]);
-
-	pkg->provides[i+1] = provided_abpkg;
-
-	j = 0;
-	abstract_pkg_vec_insert(provided_abpkg->provided_by, ab_pkg);
-    }
-    return 0;
-}
-
-/* Abhaya: added conflicts support */
-int buildConflicts(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
-{
-    register int i;
-    compound_depend_t * conflicts;
-
-    if (!pkg->conflicts_count)
-	return 0;
-
-    conflicts = pkg->conflicts = malloc(sizeof(compound_depend_t) *
-					pkg->conflicts_count);
-    if (conflicts == NULL) {
-       fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-       return  -1;
-    }
-    for (i = 0; i < pkg->conflicts_count; i++) {
-	 conflicts->type = CONFLICTS;
-	 parseDepends(conflicts, hash,
-		      pkg->conflicts_str[i]);
-#if 0
-	 for (j = 0; j < conflicts->possibility_count; j++) {
-	      depend_t *possibility = conflicts->possibilities[j];
-	      abstract_pkg_t *conflicting_apkg = possibility->pkg;
-	      pkg_add_conflict_pair(ab_pkg, conflicting_apkg);
-	 }
-#endif
-	 conflicts++;
-    }
-    return 0;
-}
-
-int buildReplaces(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
-{
-     register int i, j;
-
-     if (!pkg->replaces_count)
-	  return 0;
-
-     pkg->replaces = (abstract_pkg_t **)malloc(sizeof(abstract_pkg_t *) * pkg->replaces_count);
-     if (pkg->replaces == NULL) {
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return  -1;
-     }
-
-     // if (strcmp(ab_pkg->name, pkg->name))
-     //     fprintf(stderr, __FUNCTION__ ": ab_pkg=%s pkg=%s\n", ab_pkg->name, pkg->name);
-
-     for(i = 0; i < pkg->replaces_count; i++){
-	  abstract_pkg_t *old_abpkg = ensure_abstract_pkg_by_name(hash, pkg->replaces_str[i]);
-
-	  pkg->replaces[i] = old_abpkg;
-
-	  j = 0;
-	  if (!old_abpkg->replaced_by)
-	       old_abpkg->replaced_by = abstract_pkg_vec_alloc();
-               if ( old_abpkg->replaced_by == NULL ){
-                  return -1;
-               }
-	  /* if a package pkg both replaces and conflicts old_abpkg,
-	   * then add it to the replaced_by vector so that old_abpkg
-	   * will be upgraded to ab_pkg automatically */
-	  if (pkg_conflicts_abstract(pkg, old_abpkg))
-	       abstract_pkg_vec_insert(old_abpkg->replaced_by, ab_pkg);
-     }
-     return 0;
-}
-
-int buildDepends(hash_table_t * hash, pkg_t * pkg)
-{
-     int count;
-     register int i;
-     compound_depend_t * depends;
-
-     if(!(count = pkg->pre_depends_count + pkg->depends_count + pkg->recommends_count + pkg->suggests_count))
-	  return 0;
-
-     if (0 && pkg->pre_depends_count)
-	  fprintf(stderr, "pkg=%s pre_depends_count=%d depends_count=%d\n", 
-		  pkg->name, pkg->pre_depends_count, pkg->depends_count);
-     depends = pkg->depends = malloc(sizeof(compound_depend_t) * count);
-     if (depends == NULL) {
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return  -1;
-     }
-     
-
-     for(i = 0; i < pkg->pre_depends_count; i++){
-	  parseDepends(depends, hash, pkg->pre_depends_str[i]);
-	  if (0 && pkg->pre_depends_count)
-	       fprintf(stderr, " pre_depends_str=%s depends=%p possibility_count=%x\n", 
-		       pkg->pre_depends_str[i], depends, depends->possibility_count);
-	  depends->type = PREDEPEND;
-	  depends++;
-     }
-
-     for(i = 0; i < pkg->recommends_count; i++){
-	  parseDepends(depends, hash, pkg->recommends_str[i]);
-	  if (0 && pkg->recommends_count)
-	       fprintf(stderr, " recommends_str=%s depends=%p possibility_count=%x\n", 
-		       pkg->recommends_str[i], depends, depends->possibility_count);
-	  depends->type = RECOMMEND;
-	  depends++;
-     }
-
-     for(i = 0; i < pkg->suggests_count; i++){
-	  parseDepends(depends, hash, pkg->suggests_str[i]);
-	  if (0 && pkg->suggests_count)
-	       fprintf(stderr, " suggests_str=%s depends=%p possibility_count=%x\n", 
-		       pkg->suggests_str[i], depends, depends->possibility_count);
-	  depends->type = SUGGEST;
-	  depends++;
-     }
-
-     for(i = 0; i < pkg->depends_count; i++){
-	  parseDepends(depends, hash, pkg->depends_str[i]);
-	  if (0 && pkg->depends_count)
-	       fprintf(stderr, " depends_str=%s depends=%p possibility_count=%x\n",
-		       pkg->depends_str[i], depends, depends->possibility_count);
-	  depends++;
-     }
-     return 0;
-}    
-
-/*
- * pkg_depend_string: returns the depends string specified by index.
- *   All 4 kinds of dependences: dependence, pre-dependence, recommend, and suggest are number starting from 0.
- *   [0,npredepends) -> returns pre_depends_str[index]
- *   [npredepends,npredepends+nrecommends) -> returns recommends_str[index]
- *   [npredepends+nrecommends,npredepends+nrecommends+nsuggests) -> returns recommends_str[index]
- *   [npredepends+nrecommends+nsuggests,npredepends+nrecommends+nsuggests+ndepends) -> returns depends_str[index]
- */
-char *pkg_depend_str(pkg_t *pkg, int index)
-{
-     if (index < pkg->pre_depends_count) {
-	  return pkg->pre_depends_str[index];
-     }
-     index -= pkg->pre_depends_count;
-
-     if (index < pkg->recommends_count) {
-	  return pkg->recommends_str[index];
-     }
-     index -= pkg->recommends_count;
-
-     if (index < pkg->suggests_count) {
-	  return pkg->suggests_str[index];
-     }
-     index -= pkg->suggests_count;
-
-     if (index < pkg->depends_count) {
-	  return pkg->depends_str[index];
-     }
-     fprintf(stderr, "pkg_depend_str: index %d out of range for pkg=%s\n", index, pkg->name);
-     return NULL;
-}
-
-void freeDepends(pkg_t *pkg)
-{
-    int i;
-
-    if (pkg == NULL || pkg->depends == NULL) {
-	return;
-    }
-
-    fprintf(stderr, "Freeing depends=%p\n", pkg->depends);
-    for (i=0; i < pkg->depends->possibility_count; i++) {
-	depend_deinit(pkg->depends->possibilities[i]);
-    }
-    free(pkg->depends->possibilities);
-    free(pkg->depends);
-    pkg->depends = NULL;
-}
-
-void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg)
-{
-     compound_depend_t * depends;
-     int count, othercount;
-     register int i, j;
-     abstract_pkg_t * ab_depend;
-     abstract_pkg_t ** temp;
-
-     count = pkg->pre_depends_count + pkg->depends_count;
-     depends = pkg->depends;
-
-	  if (0 && pkg->pre_depends_count)
-	       fprintf(stderr, "pkg=%s pre_depends_count=%d depends_count=%d\n",
-		       pkg->name, pkg->pre_depends_count, pkg->depends_count);
-     for (i = 0; i < count; i++) {
-	  if (0 && pkg->pre_depends_count)
-	       fprintf(stderr, "  i=%d possibility_count=%x depends=%p\n", i, depends->possibility_count, depends);
-	  for (j = 0; j < depends->possibility_count; j++){
-	       ab_depend = depends->possibilities[j]->pkg;
-	       if(!ab_depend->depended_upon_by)
-		    ab_depend->depended_upon_by = (abstract_pkg_t **)calloc(1, sizeof(abstract_pkg_t *));
-
-	       temp = ab_depend->depended_upon_by;
-	       othercount = 1;
-	       while(*temp){
-		    temp++;
-		    othercount++;
-	       }
-	       *temp = ab_pkg;
-
-	       ab_depend->depended_upon_by = (abstract_pkg_t **)realloc(ab_depend->depended_upon_by, 
-									(othercount + 1) * sizeof(abstract_pkg_t *));
-	       /* the array may have moved */
-	       temp = ab_depend->depended_upon_by + othercount;
-	       *temp = NULL;
-	  }
-	  depends++;
-     }
-}
-
-static depend_t * depend_init(void)
-{
-    depend_t * d = (depend_t *)malloc(sizeof(depend_t));    
-    if ( d==NULL ){
-        fprintf(stderr, "%s: out of memory\n", __FUNCTION__);
-        return NULL; 
-     }
-    d->constraint = NONE;
-    d->version = NULL;
-    d->pkg = NULL;
-    
-    return d;
-}
-
-static void depend_deinit(depend_t *d)
-{
-    free(d);
-}
-
-static int parseDepends(compound_depend_t *compound_depend, 
-			hash_table_t * hash, char * depend_str)
-{
-     char * pkg_name, buffer[2048];
-     int num_of_ors = 0;
-     register int i;
-     register char * src, * dest;
-     depend_t ** possibilities;
-
-     /* first count the number of ored possibilities for satisfying dependency */
-     src = depend_str;
-     while(*src)
-	  if(*src++ == '|')
-	       num_of_ors++;
-
-     compound_depend->type = DEPEND;
-
-     compound_depend->possibility_count = num_of_ors + 1;
-     possibilities = (depend_t **)malloc(sizeof(depend_t *) * (num_of_ors + 1));
-     if (!possibilities)
-	  return -ENOMEM;
-     compound_depend->possibilities = possibilities;
-
-     src = depend_str;
-     for(i = 0; i < num_of_ors + 1; i++){
-	  possibilities[i] = depend_init();
-          if (!possibilities[i])
-	       return -ENOMEM;
-	  /* gobble up just the name first */
-	  dest = buffer;
-	  while(*src &&
-		!isspace(*src) &&
-		(*src != '(') &&
-		(*src != '*') &&
-		(*src != '|'))
-	       *dest++ = *src++;
-	  *dest = '\0';
-	  pkg_name = trim_alloc(buffer);
-          if (pkg_name == NULL )
-	       return -ENOMEM;
-	
-	  /* now look at possible version info */
-	
-	  /* skip to next chars */
-	  if(isspace(*src))
-	       while(*src && isspace(*src)) src++;
-
-	  /* extract constraint and version */
-	  if(*src == '('){
-	       src++;
-	       if(!strncmp(src, "<<", 2)){
-		    possibilities[i]->constraint = EARLIER;
-		    src += 2;
-	       }
-	       else if(!strncmp(src, "<=", 2)){
-		    possibilities[i]->constraint = EARLIER_EQUAL;
-		    src += 2;
-	       }
-	       else if(!strncmp(src, ">=", 2)){
-		    possibilities[i]->constraint = LATER_EQUAL;
-		    src += 2;
-	       }
-	       else if(!strncmp(src, ">>", 2)){
-		    possibilities[i]->constraint = LATER;
-		    src += 2;
-	       }
-	       else if(!strncmp(src, "=", 1)){
-		    possibilities[i]->constraint = EQUAL;
-		    src++;
-	       }
-	       /* should these be here to support deprecated designations; dpkg does */
-	       else if(!strncmp(src, "<", 1)){
-		    possibilities[i]->constraint = EARLIER_EQUAL;
-		    src++;
-	       }
-	       else if(!strncmp(src, ">", 1)){
-		    possibilities[i]->constraint = LATER_EQUAL;
-		    src++; 
-	       }
-
-	       /* now we have any constraint, pass space to version string */
-	       while(isspace(*src)) src++;
-
-	       /* this would be the version string */
-	       dest = buffer;
-	       while(*src && *src != ')')
-		    *dest++ = *src++;
-	       *dest = '\0';
-	    
-	       possibilities[i]->version = trim_alloc(buffer);
-	       /*	   	    fprintf(stderr, "let's print the depends version string:");
-				    fprintf(stderr, "version %s\n", possibilities[i]->version);*/
-               if (possibilities[i]->version == NULL )
-	            return -ENOMEM;
-
-	 
-	  }
-	  /* hook up the dependency to its abstract pkg */
-	  possibilities[i]->pkg = ensure_abstract_pkg_by_name(hash, pkg_name);
-
-	  free(pkg_name);
-	
-	  /* now get past the ) and any possible | chars */
-	  while(*src &&
-		(isspace(*src) ||
-		 (*src == ')') ||
-		 (*src == '|')))
-	       src++;
-	  if (*src == '*')
-	  {
-	       compound_depend->type = GREEDY_DEPEND;
-	       src++;
-	  }
-     }
-
-     return 0;
-}