Remove opkg_internal_use_only and fix associated assumptions RE pkg->provides.

It appears that the opkg_internal_use_only provides string was introduced to
bandaid over problems with assuming that the pkg->provides, pkg->provides_str
and pkg->provides_count are all the same length. As each pkg provides itself,
the pkg->provides array was one longer than the str and count fields. Most of
the uses of pkg->provides did not take this into account.

This behaviour has been changed. pkg->provides is now pkg->provides_count long
and it is pkg->provides_str which is shorter by one.

Associated dead code has also been removed.

git-svn-id: http://opkg.googlecode.com/svn/trunk@277 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

5 files changed, 19 insertions, 139 deletions

diff --git a/libopkg/opkg_remove.c b/libopkg/opkg_remove.c
index ec7540b..12d5d0c 100644
--- a/libopkg/opkg_remove.c
+++ b/libopkg/opkg_remove.c
@@ -39,7 +39,7 @@ int pkg_has_installed_dependents(opkg_conf_t *conf, abstract_pkg_t *parent_apkg,
      abstract_pkg_t **provides = pkg->provides;
      int n_installed_dependents = 0;
      int i;
-     for (i = 0; i <= nprovides; i++) {
+     for (i = 0; i < nprovides; i++) {
 	  abstract_pkg_t *providee = provides[i];
 	  abstract_pkg_t **dependers = providee->depended_upon_by;
 	  abstract_pkg_t *dep_ab_pkg;
@@ -58,7 +58,7 @@ int pkg_has_installed_dependents(opkg_conf_t *conf, abstract_pkg_t *parent_apkg,
 	  abstract_pkg_t **dependents = xcalloc((n_installed_dependents+1), sizeof(abstract_pkg_t *));
 
 	  *pdependents = dependents;
-	  for (i = 0; i <= nprovides; i++) {
+	  for (i = 0; i < nprovides; i++) {
 	       abstract_pkg_t *providee = provides[i];
 	       abstract_pkg_t **dependers = providee->depended_upon_by;
 	       abstract_pkg_t *dep_ab_pkg;
diff --git a/libopkg/pkg.c b/libopkg/pkg.c
index 3b1f21b..13415c7 100644
--- a/libopkg/pkg.c
+++ b/libopkg/pkg.c
@@ -417,8 +417,10 @@ int pkg_merge(pkg_t *oldpkg, pkg_t *newpkg, int set_status)
 	  oldpkg->provides_count = newpkg->provides_count;
 	  newpkg->provides_count = 0;
 
-	  oldpkg->provides = newpkg->provides;
-	  newpkg->provides = NULL;
+	  if (!oldpkg->provides) {
+		oldpkg->provides = newpkg->provides;
+		newpkg->provides = NULL;
+	  }
      }
 
      if (!oldpkg->conflicts_str) {
@@ -546,7 +548,6 @@ void set_flags_from_control(opkg_conf_t *conf, pkg_t *pkg){
 void pkg_formatted_field(FILE *fp, pkg_t *pkg, const char *field)
 {
      int i;
-     int flag_provide_false = 0;
 
      if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
 	  goto UNKNOWN_FMT_FIELD;
@@ -655,23 +656,11 @@ void pkg_formatted_field(FILE *fp, pkg_t *pkg, const char *field)
                fprintf(fp, "Priority: %s\n", pkg->priority);
 	  } else if (strcasecmp(field, "Provides") == 0) {
 	       if (pkg->provides_count) {
-               /* Here we check if the opkg_internal_use_only is used, and we discard it.*/
-                  for ( i=0; i < pkg->provides_count; i++ ){
-	              if (strstr(pkg->provides_str[i],"opkg_internal_use_only")!=NULL) {
-                         memset (pkg->provides_str[i],'\x0',strlen(pkg->provides_str[i])); /* Pigi clear my trick flag, just in case */
-                         flag_provide_false = 1;
-                      }
-                  }
-                  if ( !flag_provide_false ||                                             /* Pigi there is not my trick flag */
-                     ((flag_provide_false) &&  (pkg->provides_count > 1))){             /* Pigi There is, but we also have others Provides */
-                     fprintf(fp, "Provides:");
-		     for(i = 0; i < pkg->provides_count; i++) {
-                         if (strlen(pkg->provides_str[i])>0) {
-                            fprintf(fp, "%s %s", i == 1 ? "" : ",", pkg->provides_str[i]);
-                         }
-                     }
-                     fprintf(fp, "\n");
+                  fprintf(fp, "Provides:");
+		  for(i = 0; i < pkg->provides_count-1; i++) {
+                      fprintf(fp, "%s %s", i == 0 ? "" : ",", pkg->provides_str[i]);
                   }
+                  fprintf(fp, "\n");
                }
 	  } else {
 	       goto UNKNOWN_FMT_FIELD;
diff --git a/libopkg/pkg_depends.c b/libopkg/pkg_depends.c
index b894d9b..e059a25 100644
--- a/libopkg/pkg_depends.c
+++ b/libopkg/pkg_depends.c
@@ -448,47 +448,6 @@ static int is_pkg_in_pkg_vec(pkg_vec_t * vec, pkg_t * pkg)
     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.
@@ -497,14 +456,11 @@ 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 replacee_provides_count = replacee->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); */
+	  for (j = 0; j < replacee_provides_count; j++) {
 	       if (replacee->provides[j] == abstract_replacee)
 		    return 1;
 	  }
@@ -612,18 +568,16 @@ void buildProvides(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg)
     int i;
 
     /* every pkg provides itself */
+    pkg->provides_count++;
     abstract_pkg_vec_insert(ab_pkg->provided_by, ab_pkg);
-
-    if (!pkg->provides_count)
-      return;
-
-    pkg->provides = xcalloc((pkg->provides_count + 1), sizeof(abstract_pkg_t *));
+    pkg->provides = xcalloc(pkg->provides_count, sizeof(abstract_pkg_t *));
     pkg->provides[0] = ab_pkg;
 
-    for(i = 0; i < pkg->provides_count; i++){
-	abstract_pkg_t *provided_abpkg = ensure_abstract_pkg_by_name(hash, pkg->provides_str[i]);
+    for (i=1; i<pkg->provides_count; i++) {
+	abstract_pkg_t *provided_abpkg = ensure_abstract_pkg_by_name(hash,
+			pkg->provides_str[i-1]);
 
-	pkg->provides[i+1] = provided_abpkg;
+	pkg->provides[i] = provided_abpkg;
 
 	abstract_pkg_vec_insert(provided_abpkg->provided_by, ab_pkg);
     }
diff --git a/libopkg/pkg_depends.h b/libopkg/pkg_depends.h
index 18570cb..32461f6 100644
--- a/libopkg/pkg_depends.h
+++ b/libopkg/pkg_depends.h
@@ -64,18 +64,6 @@ void buildReplaces(hash_table_t * hash, abstract_pkg_t * ab_pkg, pkg_t * pkg);
 void buildDepends(hash_table_t * hash, pkg_t * pkg);
 
 /**
- * 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);
-
-/**
- * pkg_provides returns 1 if pkg->provides contains providee and 0
- * otherwise.
- */
-int pkg_provides_abstract(pkg_t *pkg, abstract_pkg_t *providee);
-
-/**
  * pkg_replaces returns 1 if pkg->replaces contains one of replacee's provides and 0
  * otherwise.
  */
diff --git a/libopkg/pkg_parse.c b/libopkg/pkg_parse.c
index 98d7a9b..12aabbe 100644
--- a/libopkg/pkg_parse.c
+++ b/libopkg/pkg_parse.c
@@ -156,38 +156,6 @@ int parseVersion(pkg_t *pkg, char *raw)
   return 0;
 }
 
-
-/* This code is needed to insert in first position the keyword for the aligning bug */
-
-int alterProvidesLine(char *raw, char *temp)
-{
-
-
-  if (!*raw) {
-      fprintf(stderr, "%s: ERROR: Provides string is empty", __FUNCTION__);
-      return -EINVAL;
-  }
-
-  if ( temp == NULL ) {
-     fprintf(stderr, "%s: out of memory \n", __FUNCTION__);
-     return -ENOMEM;
-  }
-
-  if (strncmp(raw, "Provides:", 9) == 0) {
-      raw += 9;
-  }
-  while (*raw && isspace(*raw)) {
-      raw++;
-  }      
-  
-  snprintf ( temp, 35, "Provides: opkg_internal_use_only, ");           /* First part of the line */
-  while (*raw) {
-     strncat( temp, raw++, 1);
-  }
-  return 0;
- 
-}
-
 /* Some random thoughts from Carl:
 
    This function could be considerably simplified if we just kept
@@ -208,9 +176,7 @@ int alterProvidesLine(char *raw, char *temp)
 int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
 {
     int reading_conffiles, reading_description;
-    int pkg_false_provides=1;
     char ** lines;
-    char * provide=NULL;
 
     pkg->src = src;
     pkg->dest = dest;
@@ -226,17 +192,7 @@ int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
 	    else if(isGenericFieldType("Priority:", *lines))
 		pkg->priority = parseGenericFieldType("Priority", *lines);
 	    else if(isGenericFieldType("Provides", *lines)){
-/* Here we add the internal_use to align the off by one problem between provides_str and provides */
-        	provide = xcalloc(1, strlen(*lines)+ 35 ); /* Preparing the space for the new opkg_internal_use_only */
-        	if ( alterProvidesLine(*lines,provide) ){
-        	    return EINVAL;
-        	}
-		pkg->provides_str = parseDependsString( provide, &pkg->provides_count);
-/* Let's try to hack a bit here.
-   The idea is that if a package has no Provides, we would add one generic, to permit the check of dependencies
-   in alot of other places. We will remove it before writing down the status database */
-        	pkg_false_provides=0;
-        	free(provide);
+		pkg->provides_str = parseDependsString(*lines, &pkg->provides_count);
     	    } 
 	    else if(isGenericFieldType("Pre-Depends", *lines))
 		pkg->pre_depends_str = parseDependsString(*lines, &pkg->pre_depends_count);
@@ -370,13 +326,6 @@ int pkg_parse_raw(pkg_t *pkg, char ***raw, pkg_src_t *src, pkg_dest_t *dest)
 out:;
     
     *raw = lines;
-/* If the opk has not a Provides line, we insert our false line */ 
-    if ( pkg_false_provides==1)
-    {
-       pkg->provides_count = 1;
-       pkg->provides_str = xcalloc(1, sizeof (char*));
-       pkg->provides_str[0] = xstrdup("opkg_internal_use_only");
-    }
 
     if (pkg->name) {
 	return 0;