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1b2817f539
pacman/lib/libalpm/deps.c
Dan McGee 1b2817f539 Enforce const correctness on dep functions and rewrite alpm_dep_get_string 
Add some const specifiers to the dep functions that can have them. In
addition, rewrite alpm_dep_get_string to use snprintf and cover all of
the bases (operators).

Signed-off-by: Dan McGee <dan@archlinux.org>
2007-11-13 00:13:05 -06:00

875 lines
24 KiB
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/*
* deps.c
*
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
*
* 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 of the License, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/* libalpm */
#include "deps.h"
#include "alpm_list.h"
#include "util.h"
#include "log.h"
#include "error.h"
#include "package.h"
#include "db.h"
#include "cache.h"
#include "provide.h"
#include "handle.h"
static pmgraph_t *_alpm_graph_new(void)
{
pmgraph_t *graph = NULL;
graph = (pmgraph_t *)malloc(sizeof(pmgraph_t));
if(graph) {
graph->state = 0;
graph->data = NULL;
graph->parent = NULL;
graph->children = NULL;
graph->childptr = NULL;
}
return(graph);
}
static void _alpm_graph_free(void *data)
{
pmgraph_t *graph = data;
alpm_list_free(graph->children);
free(graph);
}
pmdepmissing_t *_alpm_depmiss_new(const char *target, pmdeptype_t type,
pmdepmod_t depmod, const char *depname,
const char *depversion)
{
pmdepmissing_t *miss;
ALPM_LOG_FUNC;
MALLOC(miss, sizeof(pmdepmissing_t), RET_ERR(PM_ERR_MEMORY, NULL));
strncpy(miss->target, target, PKG_NAME_LEN);
miss->type = type;
miss->depend.mod = depmod;
strncpy(miss->depend.name, depname, PKG_NAME_LEN);
if(depversion) {
strncpy(miss->depend.version, depversion, PKG_VERSION_LEN);
} else {
miss->depend.version[0] = 0;
}
return(miss);
}
int _alpm_depmiss_isin(pmdepmissing_t *needle, alpm_list_t *haystack)
{
alpm_list_t *i;
ALPM_LOG_FUNC;
for(i = haystack; i; i = i->next) {
pmdepmissing_t *miss = i->data;
if(needle->type == miss->type &&
!strcmp(needle->target, miss->target) &&
needle->depend.mod == miss->depend.mod &&
!strcmp(needle->depend.name, miss->depend.name) &&
!strcmp(needle->depend.version, miss->depend.version)) {
return(1);
}
}
return(0);
}
/* Convert a list of pmpkg_t * to a graph structure,
* with a edge for each dependency.
* Returns a list of vertices (one vertex = one package)
* (used by alpm_sortbydeps)
*/
static alpm_list_t *_alpm_graph_init(alpm_list_t *targets)
{
alpm_list_t *i, *j, *k;
alpm_list_t *vertices = NULL;
/* We create the vertices */
for(i = targets; i; i = i->next) {
pmgraph_t *vertex = _alpm_graph_new();
vertex->data = (void *)i->data;
vertices = alpm_list_add(vertices, vertex);
}
/* We compute the edges */
for(i = vertices; i; i = i->next) {
pmgraph_t *vertex_i = i->data;
pmpkg_t *p_i = vertex_i->data;
/* TODO this should be somehow combined with _alpm_checkdeps */
for(j = vertices; j; j = j->next) {
pmgraph_t *vertex_j = j->data;
pmpkg_t *p_j = vertex_j->data;
int child = 0;
for(k = alpm_pkg_get_depends(p_i); k && !child; k = k->next) {
pmdepend_t *depend = alpm_splitdep(k->data);
child = alpm_depcmp(p_j, depend);
free(depend);
}
if(child) {
vertex_i->children =
alpm_list_add(vertex_i->children, vertex_j);
}
}
vertex_i->childptr = vertex_i->children;
}
return(vertices);
}
/* Re-order a list of target packages with respect to their dependencies.
*
* Example (PM_TRANS_TYPE_ADD):
* A depends on C
* B depends on A
* Target order is A,B,C,D
*
* Should be re-ordered to C,A,B,D
*
* mode should be either PM_TRANS_TYPE_ADD or PM_TRANS_TYPE_REMOVE. This
* affects the dependency order sortbydeps() will use.
*
* This function returns the new alpm_list_t* target list.
*
*/
alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
{
alpm_list_t *newtargs = NULL;
alpm_list_t *vertices = NULL;
alpm_list_t *vptr;
pmgraph_t *vertex;
ALPM_LOG_FUNC;
if(targets == NULL) {
return(NULL);
}
_alpm_log(PM_LOG_DEBUG, "started sorting dependencies\n");
vertices = _alpm_graph_init(targets);
vptr = vertices;
vertex = vertices->data;
while(vptr) {
/* mark that we touched the vertex */
vertex->state = -1;
int found = 0;
while(vertex->childptr && !found) {
pmgraph_t *nextchild = (vertex->childptr)->data;
vertex->childptr = (vertex->childptr)->next;
if (nextchild->state == 0) {
found = 1;
nextchild->parent = vertex;
vertex = nextchild;
}
else if(nextchild->state == -1) {
_alpm_log(PM_LOG_WARNING, _("dependency cycle detected\n"));
}
}
if(!found) {
newtargs = alpm_list_add(newtargs, vertex->data);
/* mark that we've left this vertex */
vertex->state = 1;
vertex = vertex->parent;
if(!vertex) {
vptr = vptr->next;
while(vptr) {
vertex = vptr->data;
if (vertex->state == 0) break;
vptr = vptr->next;
}
}
}
}
_alpm_log(PM_LOG_DEBUG, "sorting dependencies finished\n");
if(mode == PM_TRANS_TYPE_REMOVE) {
/* we're removing packages, so reverse the order */
alpm_list_t *tmptargs = alpm_list_reverse(newtargs);
/* free the old one */
alpm_list_free(newtargs);
newtargs = tmptargs;
}
alpm_list_free_inner(vertices, _alpm_graph_free);
alpm_list_free(vertices);
return(newtargs);
}
/** Checks dependencies and returns missing ones in a list.
* Dependencies can include versions with depmod operators.
* @param db pointer to the local package database
* @param op transaction type
* @param packages an alpm_list_t* of packages to be checked
* @return an alpm_list_t* of pmpkg_t* of missing_t pointers.
*/
alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
alpm_list_t *packages)
{
return(_alpm_checkdeps(db, op, packages));
}
alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
alpm_list_t *packages)
{
alpm_list_t *i, *j, *k, *l;
int found = 0;
alpm_list_t *baddeps = NULL;
pmdepmissing_t *miss = NULL;
ALPM_LOG_FUNC;
if(db == NULL) {
return(NULL);
}
if(op == PM_TRANS_TYPE_UPGRADE) {
/* PM_TRANS_TYPE_UPGRADE handles the backwards dependencies, ie, the packages
* listed in the requiredby field.
*/
for(i = packages; i; i = i->next) {
pmpkg_t *newpkg = i->data;
pmpkg_t *oldpkg;
if(newpkg == NULL) {
_alpm_log(PM_LOG_DEBUG, "null package found in package list\n");
continue;
}
_alpm_log(PM_LOG_DEBUG, "checkdeps: package %s-%s\n",
alpm_pkg_get_name(newpkg), alpm_pkg_get_version(newpkg));
if((oldpkg = _alpm_db_get_pkgfromcache(db, alpm_pkg_get_name(newpkg))) == NULL) {
_alpm_log(PM_LOG_DEBUG, "cannot find package installed '%s'\n",
alpm_pkg_get_name(newpkg));
continue;
}
for(j = alpm_pkg_get_requiredby(oldpkg); j; j = j->next) {
pmpkg_t *p;
found = 0;
if(_alpm_pkg_find(j->data, packages)) {
/* this package also in the upgrade list, so don't worry about it */
continue;
}
if((p = _alpm_db_get_pkgfromcache(db, j->data)) == NULL) {
/* hmmm... package isn't installed.. */
continue;
}
for(k = alpm_pkg_get_depends(p); k; k = k->next) {
/* don't break any existing dependencies (possible provides) */
pmdepend_t *depend = alpm_splitdep(k->data);
if(depend == NULL) {
continue;
}
/* if oldpkg satisfied this dep, and newpkg doesn't */
if(alpm_depcmp(oldpkg, depend) && !alpm_depcmp(newpkg, depend)) {
/* we've found a dep that was removed... see if any other package
* still contains/provides the dep */
int satisfied = 0;
for(l = packages; l; l = l->next) {
pmpkg_t *pkg = l->data;
if(alpm_depcmp(pkg, depend)) {
_alpm_log(PM_LOG_DEBUG, "checkdeps: dependency '%s' has moved from '%s' to '%s'\n",
(char*)k->data, alpm_pkg_get_name(oldpkg), alpm_pkg_get_name(pkg));
satisfied = 1;
break;
}
}
if(!satisfied) {
/* worst case... check installed packages to see if anything else
* satisfies this... */
for(l = _alpm_db_get_pkgcache(db); l; l = l->next) {
pmpkg_t *pkg = l->data;
if(alpm_depcmp(pkg, depend) && !_alpm_pkg_find(alpm_pkg_get_name(pkg), packages)) {
/* we ignore packages that will be updated because we know
* that the updated ones don't satisfy depend */
_alpm_log(PM_LOG_DEBUG, "checkdeps: dependency '%s' satisfied by installed package '%s'\n",
(char*)k->data, alpm_pkg_get_name(pkg));
satisfied = 1;
break;
}
}
}
if(!satisfied) {
_alpm_log(PM_LOG_DEBUG, "checkdeps: updated '%s' won't satisfy a dependency of '%s'\n",
alpm_pkg_get_name(oldpkg), alpm_pkg_get_name(p));
miss = _alpm_depmiss_new(p->name, PM_DEP_TYPE_DEPEND, depend->mod,
depend->name, depend->version);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
FREE(miss);
}
}
}
FREE(depend);
}
}
}
}
if(op == PM_TRANS_TYPE_ADD || op == PM_TRANS_TYPE_UPGRADE) {
/* DEPENDENCIES -- look for unsatisfied dependencies */
for(i = packages; i; i = i->next) {
pmpkg_t *tp = i->data;
if(tp == NULL) {
_alpm_log(PM_LOG_DEBUG, "null package found in package list\n");
continue;
}
_alpm_log(PM_LOG_DEBUG, "checkdeps: package %s-%s\n",
alpm_pkg_get_name(tp), alpm_pkg_get_version(tp));
for(j = alpm_pkg_get_depends(tp); j; j = j->next) {
/* split into name/version pairs */
pmdepend_t *depend = alpm_splitdep((char*)j->data);
if(depend == NULL) {
continue;
}
found = 0;
/* check other targets */
for(k = packages; k && !found; k = k->next) {
pmpkg_t *p = k->data;
found = alpm_depcmp(p, depend);
}
/* check database for satisfying packages */
/* we can ignore packages being updated, they were checked above */
for(k = _alpm_db_get_pkgcache(db); k && !found; k = k->next) {
pmpkg_t *p = k->data;
found = alpm_depcmp(p, depend)
&& !_alpm_pkg_find(alpm_pkg_get_name(p), packages);
}
/* else if still not found... */
if(!found) {
_alpm_log(PM_LOG_DEBUG, "missing dependency '%s' for package '%s'\n",
(char*)j->data, alpm_pkg_get_name(tp));
miss = _alpm_depmiss_new(alpm_pkg_get_name(tp), PM_DEP_TYPE_DEPEND, depend->mod,
depend->name, depend->version);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
FREE(miss);
}
}
FREE(depend);
}
}
} else if(op == PM_TRANS_TYPE_REMOVE) {
/* check requiredby fields */
for(i = packages; i; i = i->next) {
pmpkg_t *rmpkg = alpm_list_getdata(i);
if(rmpkg == NULL) {
_alpm_log(PM_LOG_DEBUG, "null package found in package list\n");
continue;
}
for(j = alpm_pkg_get_requiredby(rmpkg); j; j = j->next) {
pmpkg_t *p;
found = 0;
if(_alpm_pkg_find(j->data, packages)) {
/* package also in the remove list, so don't worry about it */
continue;
}
if((p = _alpm_db_get_pkgfromcache(db, j->data)) == NULL) {
/* hmmm... package isn't installed... */
continue;
}
for(k = alpm_pkg_get_depends(p); k; k = k->next) {
pmdepend_t *depend = alpm_splitdep(k->data);
if(depend == NULL) {
continue;
}
/* if rmpkg satisfied this dep, try to find an other satisfier
* (which won't be removed)*/
if(alpm_depcmp(rmpkg, depend)) {
int satisfied = 0;
for(l = _alpm_db_get_pkgcache(db); l; l = l->next) {
pmpkg_t *pkg = l->data;
if(alpm_depcmp(pkg, depend) && !_alpm_pkg_find(alpm_pkg_get_name(pkg), packages)) {
_alpm_log(PM_LOG_DEBUG, "checkdeps: dependency '%s' satisfied by installed package '%s'\n",
(char*)k->data, alpm_pkg_get_name(pkg));
satisfied = 1;
break;
}
}
if(!satisfied) {
_alpm_log(PM_LOG_DEBUG, "checkdeps: found %s which requires %s\n",
alpm_pkg_get_name(p), alpm_pkg_get_name(rmpkg));
miss = _alpm_depmiss_new(alpm_pkg_get_name(p),
PM_DEP_TYPE_DEPEND, depend->mod, depend->name,
depend->version);
if(!_alpm_depmiss_isin(miss, baddeps)) {
baddeps = alpm_list_add(baddeps, miss);
} else {
FREE(miss);
}
}
}
FREE(depend);
}
}
}
}
return(baddeps);
}
static int dep_vercmp(const char *version1, pmdepmod_t mod,
const char *version2)
{
int equal = 0;
if(mod == PM_DEP_MOD_ANY) {
equal = 1;
} else {
int cmp = _alpm_versioncmp(version1, version2);
switch(mod) {
case PM_DEP_MOD_EQ: equal = (cmp == 0); break;
case PM_DEP_MOD_GE: equal = (cmp >= 0); break;
case PM_DEP_MOD_LE: equal = (cmp <= 0); break;
default: equal = 1; break;
}
}
return(equal);
}
int SYMEXPORT alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
{
int equal = 0;
ALPM_LOG_FUNC;
const char *pkgname = alpm_pkg_get_name(pkg);
const char *pkgversion = alpm_pkg_get_version(pkg);
if(strcmp(pkgname, dep->name) == 0
|| alpm_list_find_str(alpm_pkg_get_provides(pkg), dep->name)) {
equal = dep_vercmp(pkgversion, dep->mod, dep->version);
char *mod = "~=";
switch(dep->mod) {
case PM_DEP_MOD_EQ: mod = "=="; break;
case PM_DEP_MOD_GE: mod = ">="; break;
case PM_DEP_MOD_LE: mod = "<="; break;
default: break;
}
if(strlen(dep->version) > 0) {
_alpm_log(PM_LOG_DEBUG, "depcmp: %s-%s %s %s-%s => %s\n",
pkgname, pkgversion,
mod, dep->name, dep->version, (equal ? "match" : "no match"));
} else {
_alpm_log(PM_LOG_DEBUG, "depcmp: %s-%s %s %s => %s\n",
pkgname, pkgversion,
mod, dep->name, (equal ? "match" : "no match"));
}
}
return(equal);
}
pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
{
pmdepend_t *depend;
char *ptr = NULL;
char *newstr = NULL;
if(depstring == NULL) {
return(NULL);
}
newstr = strdup(depstring);
MALLOC(depend, sizeof(pmdepend_t), return(NULL));
/* Find a version comparator if one exists. If it does, set the type and
* increment the ptr accordingly so we can copy the right strings. */
if((ptr = strstr(newstr, ">="))) {
depend->mod = PM_DEP_MOD_GE;
*ptr = '\0';
ptr += 2;
} else if((ptr = strstr(newstr, "<="))) {
depend->mod = PM_DEP_MOD_LE;
*ptr = '\0';
ptr += 2;
} else if((ptr = strstr(newstr, "="))) {
depend->mod = PM_DEP_MOD_EQ;
*ptr = '\0';
ptr += 1;
} else {
/* no version specified - copy in the name and return it */
depend->mod = PM_DEP_MOD_ANY;
strncpy(depend->name, newstr, PKG_NAME_LEN);
depend->version[0] = '\0';
free(newstr);
return(depend);
}
/* if we get here, we have a version comparator, copy the right parts
* to the right places */
strncpy(depend->name, newstr, PKG_NAME_LEN);
strncpy(depend->version, ptr, PKG_VERSION_LEN);
free(newstr);
return(depend);
}
/* These parameters are messy. We check if this package, given a list of
* targets and a db is safe to remove. We do NOT remove it if it is in the
* target list, or if if the package was explictly installed and
* include_explicit == 0 */
static int can_remove_package(pmdb_t *db, pmpkg_t *pkg, alpm_list_t *targets,
int include_explicit)
{
alpm_list_t *i;
if(_alpm_pkg_find(alpm_pkg_get_name(pkg), targets)) {
return(0);
}
if(!include_explicit) {
/* see if it was explicitly installed */
if(alpm_pkg_get_reason(pkg) == PM_PKG_REASON_EXPLICIT) {
_alpm_log(PM_LOG_DEBUG, "excluding %s -- explicitly installed\n",
alpm_pkg_get_name(pkg));
return(0);
}
}
/* TODO: checkdeps could be used here, it handles multiple providers
* better, but that also makes it slower.
* Also this would require to first add the package to the targets list,
* then call checkdeps with it, then remove the package from the targets list
* if checkdeps detected it would break something */
/* see if other packages need it */
for(i = alpm_pkg_get_requiredby(pkg); i; i = i->next) {
pmpkg_t *reqpkg = _alpm_db_get_pkgfromcache(db, i->data);
if(reqpkg && !_alpm_pkg_find(alpm_pkg_get_name(reqpkg), targets)) {
return(0);
}
}
/* it's ok to remove */
return(1);
}
/**
* @brief Adds unneeded dependencies to an existing list of packages.
* By unneeded, we mean dependencies that are only required by packages in the
* target list, so they can be safely removed.
*
* @param db package database to do dependency tracing in
* @param *targs pointer to a list of packages
* @param include_explicit if 0, explicitly installed packages are not included
*/
void _alpm_recursedeps(pmdb_t *db, alpm_list_t **targs, int include_explicit)
{
alpm_list_t *i, *j, *k;
ALPM_LOG_FUNC;
if(db == NULL || targs == NULL) {
return;
}
/* TODO: the while loop should be removed if we can assume
* that alpm_list_add (or another function) adds to the end of the list,
* and that the target list is topo sorted (by _alpm_sortbydeps()).
*/
int ready = 0;
while(!ready) {
ready = 1;
for(i = *targs; i; i = i->next) {
pmpkg_t *pkg = i->data;
for(j = alpm_pkg_get_depends(pkg); j; j = j->next) {
pmdepend_t *depend = alpm_splitdep(j->data);
if(depend == NULL) {
continue;
}
for(k = _alpm_db_get_pkgcache(db); k; k = k->next) {
pmpkg_t *deppkg = k->data;
if(alpm_depcmp(deppkg,depend)
&& can_remove_package(db, deppkg, *targs, include_explicit)) {
_alpm_log(PM_LOG_DEBUG, "adding '%s' to the targets\n",
alpm_pkg_get_name(deppkg));
/* add it to the target list */
*targs = alpm_list_add(*targs, _alpm_pkg_dup(deppkg));
ready = 0;
}
}
FREE(depend);
}
}
}
}
/* populates *list with packages that need to be installed to satisfy all
* dependencies (recursive) for syncpkg
*
* make sure **list is already initialized
*/
int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
alpm_list_t **list, pmtrans_t *trans, alpm_list_t **data)
{
alpm_list_t *i, *j, *k;
alpm_list_t *targ;
alpm_list_t *deps = NULL;
ALPM_LOG_FUNC;
if(local == NULL || dbs_sync == NULL || syncpkg == NULL || list == NULL) {
return(-1);
}
_alpm_log(PM_LOG_DEBUG, "started resolving dependencies\n");
targ = alpm_list_add(NULL, syncpkg);
deps = _alpm_checkdeps(local, PM_TRANS_TYPE_ADD, targ);
alpm_list_free(targ);
if(deps == NULL) {
return(0);
}
for(i = deps; i; i = i->next) {
int found = 0;
pmdepmissing_t *miss = i->data;
pmdepend_t *missdep = &(miss->depend);
pmpkg_t *sync = NULL;
/* check if one of the packages in *list already satisfies this dependency */
for(j = *list; j && !found; j = j->next) {
pmpkg_t *sp = j->data;
if(alpm_depcmp(sp, missdep)) {
char *missdepstring = alpm_dep_get_string(missdep);
_alpm_log(PM_LOG_DEBUG, "%s satisfies dependency %s -- skipping\n",
alpm_pkg_get_name(sp), missdepstring);
free(missdepstring);
found = 1;
}
}
if(found) {
continue;
}
/* find the package in one of the repositories */
/* check literals */
for(j = dbs_sync; j && !found; j = j->next) {
if((sync = _alpm_db_get_pkgfromcache(j->data, missdep->name))) {
found = alpm_depcmp(sync, missdep);
}
}
/*TODO this autoresolves the first 'satisfier' package... we should fix this
* somehow */
/* check provides */
for(j = dbs_sync; j && !found; j = j->next) {
for(k = _alpm_db_get_pkgcache(j->data); k && !found; k = k->next) {
sync = k->data;
found = alpm_depcmp(sync, missdep);
}
}
if(!found) {
char *missdepstring = alpm_dep_get_string(missdep);
_alpm_log(PM_LOG_ERROR, _("cannot resolve \"%s\", a dependency of \"%s\"\n"),
missdepstring, miss->target);
free(missdepstring);
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %zd bytes\n"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
pm_errno = PM_ERR_UNSATISFIED_DEPS;
goto error;
}
/* check pmo_ignorepkg and pmo_s_ignore to make sure we haven't pulled in
* something we're not supposed to.
*/
int usedep = 1;
if(_alpm_pkg_should_ignore(sync)) {
pmpkg_t *dummypkg = _alpm_pkg_new(miss->target, NULL);
QUESTION(trans, PM_TRANS_CONV_INSTALL_IGNOREPKG, dummypkg, sync, NULL, &usedep);
_alpm_pkg_free(dummypkg);
}
if(usedep) {
_alpm_log(PM_LOG_DEBUG, "pulling dependency %s (needed by %s)\n",
alpm_pkg_get_name(sync), alpm_pkg_get_name(syncpkg));
*list = alpm_list_add(*list, sync);
if(_alpm_resolvedeps(local, dbs_sync, sync, list, trans, data)) {
goto error;
}
} else {
_alpm_log(PM_LOG_ERROR, _("cannot resolve dependencies for \"%s\"\n"), miss->target);
if(data) {
if((miss = malloc(sizeof(pmdepmissing_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %zd bytes\n"), sizeof(pmdepmissing_t));
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = alpm_list_add(*data, miss);
}
pm_errno = PM_ERR_UNSATISFIED_DEPS;
goto error;
}
}
_alpm_log(PM_LOG_DEBUG, "finished resolving dependencies\n");
FREELIST(deps);
return(0);
error:
FREELIST(deps);
return(-1);
}
const char SYMEXPORT *alpm_miss_get_target(const pmdepmissing_t *miss)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(miss != NULL, return(NULL));
return miss->target;
}
pmdeptype_t SYMEXPORT alpm_miss_get_type(const pmdepmissing_t *miss)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(miss != NULL, return(-1));
return miss->type;
}
pmdepend_t SYMEXPORT *alpm_miss_get_dep(pmdepmissing_t *miss)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(miss != NULL, return(NULL));
return &miss->depend;
}
pmdepmod_t SYMEXPORT alpm_dep_get_mod(const pmdepend_t *dep)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(dep != NULL, return(-1));
return dep->mod;
}
const char SYMEXPORT *alpm_dep_get_name(const pmdepend_t *dep)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(dep != NULL, return(NULL));
return dep->name;
}
const char SYMEXPORT *alpm_dep_get_version(const pmdepend_t *dep)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(dep != NULL, return(NULL));
return dep->version;
}
/** Reverse of splitdep; make a dep string from a pmdepend_t struct.
* The string must be freed!
* @param dep the depend to turn into a string
* @return a string-formatted dependency with operator if necessary
*/
char SYMEXPORT *alpm_dep_get_string(const pmdepend_t *dep)
{
char *opr, *str = NULL;
size_t len;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(dep != NULL, return(NULL));
switch(dep->mod) {
case PM_DEP_MOD_ANY:
opr = "";
break;
case PM_DEP_MOD_GE:
opr = ">=";
break;
case PM_DEP_MOD_LE:
opr = "<=";
break;
case PM_DEP_MOD_EQ:
opr = "=";
break;
default:
opr = "";
break;
}
/* we can always compute len and print the string like this because opr
* and ver will be empty when PM_DEP_MOD_ANY is the depend type */
len = strlen(dep->name) + strlen(opr) + strlen(dep->version) + 1;
MALLOC(str, len, RET_ERR(PM_ERR_MEMORY, NULL));
snprintf(str, len, "%s%s%s", dep->name, opr, dep->version);
return(str);
}
/* vim: set ts=2 sw=2 noet: */
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