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pactree: consolidate both walk_deps functions

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Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
[Allan: fix shadow warning]
Signed-off-by: Allan McRae <allan@archlinux.org>

Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Andrew Gregory 2012-07-02 22:51:07 -04:00 • committed by Dan McGee
parent ddbd36103d
commit a6bd14285d
1 changed files with 28 additions and 61 deletions
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89
src/util/pactree.c
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@ -359,85 +359,56 @@ static void print_end(void)
} }
} }
static alpm_pkg_t *get_pkg_from_dbs(alpm_list_t *dbs, const char *needle) { static alpm_list_t *get_pkg_dep_names(alpm_pkg_t *pkg)
alpm_list_t *i; {
alpm_pkg_t *ret; alpm_list_t *i, *names = NULL;
for(i = alpm_pkg_get_depends(pkg); i; i = alpm_list_next(i)) {
for(i = dbs; i; i = alpm_list_next(i)) { alpm_depend_t *d = i->data;
ret = alpm_db_get_pkg(i->data, needle); names = alpm_list_add(names, d->name);
if(ret) {
return ret;
}
} }
return NULL; return names;
} }
/** /**
* walk dependencies in reverse, showing packages which require the target * walk dependencies, showing dependencies of the target
*/ */
static void walk_reverse_deps(alpm_list_t *dblist, alpm_pkg_t *pkg, int depth) static void walk_deps(alpm_list_t *dblist, alpm_pkg_t *pkg, int depth, int rev)
{ {
alpm_list_t *required_by, *i; alpm_list_t *deps, *i;
if(!pkg || ((max_depth >= 0) && (depth == max_depth + 1))) { if(!pkg || ((max_depth >= 0) && (depth == max_depth + 1))) {
return; return;
} }
walked = alpm_list_add(walked, (void *)alpm_pkg_get_name(pkg)); walked = alpm_list_add(walked, (void *)alpm_pkg_get_name(pkg));
required_by = alpm_pkg_compute_requiredby(pkg);
for(i = required_by; i; i = alpm_list_next(i)) { if(rev) {
deps = alpm_pkg_compute_requiredby(pkg);
} else {
deps = get_pkg_dep_names(pkg);
}
for(i = deps; i; i = alpm_list_next(i)) {
const char *pkgname = i->data; const char *pkgname = i->data;
if(alpm_list_find_str(walked, pkgname)) { alpm_pkg_t *dep_pkg = alpm_find_dbs_satisfier(handle, dblist, pkgname);
if(alpm_list_find_str(walked, dep_pkg ? alpm_pkg_get_name(dep_pkg) : pkgname)) {
/* if we've already seen this package, don't print in "unique" output /* if we've already seen this package, don't print in "unique" output
* and don't recurse */ * and don't recurse */
if(!unique) { if(!unique) {
print(alpm_pkg_get_name(pkg), pkgname, NULL, depth); print(alpm_pkg_get_name(pkg), alpm_pkg_get_name(dep_pkg), pkgname, depth);
} }
} else { } else {
print(alpm_pkg_get_name(pkg), pkgname, NULL, depth); print(alpm_pkg_get_name(pkg), alpm_pkg_get_name(dep_pkg), pkgname, depth);
walk_reverse_deps(dblist, get_pkg_from_dbs(dblist, pkgname), depth + 1); if(dep_pkg) {
walk_deps(dblist, dep_pkg, depth + 1, rev);
}
} }
} }
FREELIST(required_by); if(rev) {
} FREELIST(deps);
/**
* walk dependencies, showing dependencies of the target
*/
static void walk_deps(alpm_list_t *dblist, alpm_pkg_t *pkg, int depth)
{
alpm_list_t *i;
if((max_depth >= 0) && (depth == max_depth + 1)) {
return;
}
walked = alpm_list_add(walked, (void *)alpm_pkg_get_name(pkg));
for(i = alpm_pkg_get_depends(pkg); i; i = alpm_list_next(i)) {
alpm_depend_t *depend = i->data;
alpm_pkg_t *provider = alpm_find_dbs_satisfier(handle, dblist, depend->name);
if(provider) {
const char *provname = alpm_pkg_get_name(provider);
if(alpm_list_find_str(walked, provname)) {
/* if we've already seen this package, don't print in "unique" output
* and don't recurse */
if(!unique) {
print(alpm_pkg_get_name(pkg), provname, depend->name, depth);
}
} else {
print(alpm_pkg_get_name(pkg), provname, depend->name, depth);
walk_deps(dblist, provider, depth + 1);
}
} else {
/* unresolvable package */
print(alpm_pkg_get_name(pkg), NULL, depend->name, depth);
}
} }
} }
@ -486,11 +457,7 @@ int main(int argc, char *argv[])
print_start(alpm_pkg_get_name(pkg), target_name); print_start(alpm_pkg_get_name(pkg), target_name);
if(reverse) { walk_deps(dblist, pkg, 1, reverse);
walk_reverse_deps(dblist, pkg, 1);
} else {
walk_deps(dblist, pkg, 1);
}
print_end(); print_end();