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pkg: clean up dependency comparison code

pull/100/head
William Pitcock 2016-08-26 10:54:37 -05:00
parent 4960242acb
commit d5d194f1db
2 changed files with 27 additions and 45 deletions
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14
libpkgconf/libpkgconf.h
View File

@ -24,15 +24,13 @@
#define PKGCONF_BUFSIZE (65535)
typedef enum {
PKGCONF_CMP_ANY = 0,
PKGCONF_CMP_LESS_THAN,
PKGCONF_CMP_GREATER_THAN,
PKGCONF_CMP_LESS_THAN_EQUAL,
PKGCONF_CMP_GREATER_THAN_EQUAL,
PKGCONF_CMP_EQUAL,
PKGCONF_CMP_NOT_EQUAL,
PKGCONF_CMP_ALWAYS_MATCH,
PKGCONF_CMP_SIZE
PKGCONF_CMP_ANY,
PKGCONF_CMP_LESS_THAN,
PKGCONF_CMP_LESS_THAN_EQUAL,
PKGCONF_CMP_EQUAL,
PKGCONF_CMP_GREATER_THAN,
PKGCONF_CMP_GREATER_THAN_EQUAL
} pkgconf_pkg_comparator_t;
typedef struct pkgconf_pkg_ pkgconf_pkg_t;

58
libpkgconf/pkg.c
View File

@ -764,19 +764,24 @@ typedef bool (*pkgconf_vercmp_res_func_t)(pkgconf_pkg_t *pkg, pkgconf_dependency
typedef struct {
const char *name;
pkgconf_pkg_comparator_t compare;
} pkgconf_pkg_comparator_name_t;
} pkgconf_pkg_comparator_pair_t;
static const pkgconf_pkg_comparator_name_t pkgconf_pkg_comparator_names[PKGCONF_CMP_SIZE + 1] = {
{"<", PKGCONF_CMP_LESS_THAN},
{">", PKGCONF_CMP_GREATER_THAN},
{"<=", PKGCONF_CMP_LESS_THAN_EQUAL},
{">=", PKGCONF_CMP_GREATER_THAN_EQUAL},
{"=", PKGCONF_CMP_EQUAL},
static const pkgconf_pkg_comparator_pair_t pkgconf_pkg_comparator_names[] = {
{"!=", PKGCONF_CMP_NOT_EQUAL},
{"(any)", PKGCONF_CMP_ANY},
{"???", PKGCONF_CMP_SIZE},
{"<", PKGCONF_CMP_LESS_THAN},
{"<=", PKGCONF_CMP_LESS_THAN_EQUAL},
{"=", PKGCONF_CMP_EQUAL},
{">", PKGCONF_CMP_GREATER_THAN},
{">=", PKGCONF_CMP_GREATER_THAN_EQUAL},
};
static int pkgconf_pkg_comparator_pair_namecmp(const void *key, const void *ptr)
{
const pkgconf_pkg_comparator_pair_t *pair = ptr;
return strcmp(key, pair->name);
}
static bool pkgconf_pkg_comparator_lt(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) < 0);
@ -815,15 +820,7 @@ static bool pkgconf_pkg_comparator_any(pkgconf_pkg_t *pkg, pkgconf_dependency_t
return true;
}
static bool pkgconf_pkg_comparator_unimplemented(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
(void) pkg;
(void) pkgdep;
return false;
}
static const pkgconf_vercmp_res_func_t pkgconf_pkg_comparator_impls[PKGCONF_CMP_SIZE + 1] = {
static const pkgconf_vercmp_res_func_t pkgconf_pkg_comparator_impls[] = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_any,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
@ -831,7 +828,6 @@ static const pkgconf_vercmp_res_func_t pkgconf_pkg_comparator_impls[PKGCONF_CMP_
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_eq,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_ne,
[PKGCONF_CMP_SIZE] = pkgconf_pkg_comparator_unimplemented,
};
/*
@ -842,15 +838,10 @@ static const pkgconf_vercmp_res_func_t pkgconf_pkg_comparator_impls[PKGCONF_CMP_
const char *
pkgconf_pkg_get_comparator(const pkgconf_dependency_t *pkgdep)
{
const pkgconf_pkg_comparator_name_t *i;
for (i = pkgconf_pkg_comparator_names; i->compare != PKGCONF_CMP_SIZE; i++)
{
if (i->compare == pkgdep->compare)
return i->name;
}
if (pkgdep->compare > PKGCONF_ARRAY_SIZE(pkgconf_pkg_comparator_names))
return "???";
return pkgconf_pkg_comparator_names[pkgdep->compare].name;
}
/*
@ -858,22 +849,15 @@ pkgconf_pkg_get_comparator(const pkgconf_dependency_t *pkgdep)
*
* look up the appropriate comparator bytecode in the comparator set (defined
* above, see pkgconf_pkg_comparator_names and pkgconf_pkg_comparator_impls).
*
* XXX: on error return PKGCONF_CMP_ANY or maybe we should return PKGCONF_CMP_SIZE which
* is poisoned?
*/
pkgconf_pkg_comparator_t
pkgconf_pkg_comparator_lookup_by_name(const char *name)
{
const pkgconf_pkg_comparator_name_t *i;
const pkgconf_pkg_comparator_pair_t *p = bsearch(name, pkgconf_pkg_comparator_names,
PKGCONF_ARRAY_SIZE(pkgconf_pkg_comparator_names), sizeof(pkgconf_pkg_comparator_pair_t),
pkgconf_pkg_comparator_pair_namecmp);
for (i = pkgconf_pkg_comparator_names; i->compare != PKGCONF_CMP_SIZE; i++)
{
if (!strcmp(i->name, name))
return i->compare;
}
return PKGCONF_CMP_ANY;
return (p != NULL) ? p->compare : PKGCONF_CMP_ANY;
}
/*