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alpm/depcmp: new NODEPVERSION flag 

This flag allows to disable version checking in dependency resolving
code.

depcmp_tolerant respects the NODEPVERSION flag but we still keep the
original strict depcmp. The idea is to reduce the impact of the
NODEPVERSION flag by using it in fewer places.

I replaced almost all depcmp calls by depcmp_tolerant in deps.c (except
in the public find_satisfier used by deptest / pacman -T), but I kept
depcmp in sync.c and conflict.c

Signed-off-by: Xavier Chantry <chantry.xavier@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Xavier Chantry 2010-10-14 11:28:25 +02:00 committed by Dan McGee
parent b8d01dace8
commit b6ec9019d7
3 changed files with 37 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/libalpm/alpm.h
View File

@ -273,7 +273,7 @@ typedef enum _pmtransflag_t {
PM_TRANS_FLAG_NODEPS = 1,
PM_TRANS_FLAG_FORCE = (1 << 1),
PM_TRANS_FLAG_NOSAVE = (1 << 2),
/* (1 << 3) flag can go here */
PM_TRANS_FLAG_NODEPVERSION = (1 << 3),
PM_TRANS_FLAG_CASCADE = (1 << 4),
PM_TRANS_FLAG_RECURSE = (1 << 5),
PM_TRANS_FLAG_DBONLY = (1 << 6),

43
lib/libalpm/deps.c
View File

@ -195,7 +195,7 @@ pmpkg_t *_alpm_find_dep_satisfier(alpm_list_t *pkgs, pmdepend_t *dep)
for(i = pkgs; i; i = alpm_list_next(i)) {
pmpkg_t *pkg = i->data;
if(_alpm_depcmp(pkg, dep)) {
if(_alpm_depcmp_tolerant(pkg, dep)) {
return(pkg);
}
}
@ -319,10 +319,18 @@ static int dep_vercmp(const char *version1, pmdepmod_t mod,
return(equal);
}
int _alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
/* nodepversion: skip version checking */
static int _depcmp(pmpkg_t *pkg, pmdepend_t *dep, int nodepversion)
{
alpm_list_t *i;
int satisfy = 0;
int depmod;
if(nodepversion) {
depmod = PM_DEP_MOD_ANY;
} else {
depmod = dep->mod;
}
/* check (pkg->name, pkg->version) */
if(pkg->name_hash && dep->name_hash
@ -330,7 +338,7 @@ int _alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
/* skip more expensive checks */
} else {
satisfy = (strcmp(pkg->name, dep->name) == 0
&& dep_vercmp(pkg->version, dep->mod, dep->version));
&& dep_vercmp(pkg->version, depmod, dep->version));
if(satisfy) {
return(satisfy);
}
@ -342,7 +350,7 @@ int _alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
const char *provver = strchr(provision, '=');
if(provver == NULL) { /* no provision version */
satisfy = (dep->mod == PM_DEP_MOD_ANY
satisfy = (depmod == PM_DEP_MOD_ANY
&& strcmp(provision, dep->name) == 0);
} else {
/* This is a bit tricker than the old code for performance reasons. To
@ -354,13 +362,32 @@ int _alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
provver += 1;
satisfy = (strlen(dep->name) == namelen
&& strncmp(provision, dep->name, namelen) == 0
&& dep_vercmp(provver, dep->mod, dep->version));
&& dep_vercmp(provver, depmod, dep->version));
}
}
return(satisfy);
}
/* tolerant : respects NODEPVERSION flag */
int _alpm_depcmp_tolerant(pmpkg_t *pkg, pmdepend_t *dep)
{
int nodepversion = 0;
int flags = alpm_trans_get_flags();
if (flags != -1) {
nodepversion = flags & PM_TRANS_FLAG_NODEPVERSION;
}
return(_depcmp(pkg, dep, nodepversion));
}
/* strict : ignores NODEPVERSION flag */
int _alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
{
return(_depcmp(pkg, dep, 0));
}
pmdepend_t *_alpm_splitdep(const char *depstring)
{
pmdepend_t *depend;
@ -540,7 +567,7 @@ pmpkg_t *_alpm_resolvedep(pmdepend_t *dep, alpm_list_t *dbs,
/* 1. literals */
for(i = dbs; i; i = i->next) {
pmpkg_t *pkg = _alpm_db_get_pkgfromcache(i->data, dep->name);
if(pkg && _alpm_depcmp(pkg, dep) && !_alpm_pkg_find(excluding, pkg->name)) {
if(pkg && _alpm_depcmp_tolerant(pkg, dep) && !_alpm_pkg_find(excluding, pkg->name)) {
if(_alpm_pkg_should_ignore(pkg)) {
int install = 0;
if (prompt) {
@ -561,7 +588,7 @@ pmpkg_t *_alpm_resolvedep(pmdepend_t *dep, alpm_list_t *dbs,
for(i = dbs; i; i = i->next) {
for(j = _alpm_db_get_pkgcache(i->data); j; j = j->next) {
pmpkg_t *pkg = j->data;
if(_alpm_depcmp(pkg, dep) && strcmp(pkg->name, dep->name) != 0 &&
if(_alpm_depcmp_tolerant(pkg, dep) && strcmp(pkg->name, dep->name) != 0 &&
!_alpm_pkg_find(excluding, pkg->name)) {
if(_alpm_pkg_should_ignore(pkg)) {
int install = 0;
@ -715,7 +742,7 @@ int _alpm_dep_edge(pmpkg_t *pkg1, pmpkg_t *pkg2)
{
alpm_list_t *i;
for(i = alpm_pkg_get_depends(pkg1); i; i = i->next) {
if(_alpm_depcmp(pkg2, i->data)) {
if(_alpm_depcmp_tolerant(pkg2, i->data)) {
return(1);
}
}

1
lib/libalpm/deps.h
View File

@ -57,6 +57,7 @@ int _alpm_dep_edge(pmpkg_t *pkg1, pmpkg_t *pkg2);
pmdepend_t *_alpm_splitdep(const char *depstring);
pmpkg_t *_alpm_find_dep_satisfier(alpm_list_t *pkgs, pmdepend_t *dep);
int _alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep);
int _alpm_depcmp_tolerant(pmpkg_t *pkg, pmdepend_t *dep);
#endif /* _ALPM_DEPS_H */