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pkg: use bsearch(3) instead of a hardcoded tree of strcmp logic

feature/tap-sh
William Pitcock 2016-08-26 01:11:50 -05:00
parent 9e415ea151
commit be4a002f1c
2 changed files with 70 additions and 20 deletions
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89
libpkgconf/pkg.c
View File

@ -194,6 +194,72 @@ pkgconf_pkg_dir_list_build(unsigned int flags)
}
}
typedef void (*pkgconf_pkg_parser_keyword_func_t)(pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value, unsigned int flags);
typedef struct {
const char *keyword;
const pkgconf_pkg_parser_keyword_func_t func;
const ptrdiff_t offset;
} pkgconf_pkg_parser_keyword_pair_t;
static int pkgconf_pkg_parser_keyword_pair_cmp(const void *key, const void *ptr)
{
const pkgconf_pkg_parser_keyword_pair_t *pair = ptr;
return strcasecmp(key, pair->keyword);
}
static void
pkgconf_pkg_parser_tuple_func(pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value, unsigned int flags)
{
char **dest = ((void *) pkg + offset);
(void) flags;
*dest = pkgconf_tuple_parse(&pkg->vars, value);
}
static void
pkgconf_pkg_parser_fragment_func(pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value, unsigned int flags)
{
pkgconf_list_t *dest = ((void *) pkg + offset);
pkgconf_fragment_parse(dest, &pkg->vars, value, flags);
}
static void
pkgconf_pkg_parser_dependency_func(pkgconf_pkg_t *pkg, const ptrdiff_t offset, char *value, unsigned int flags)
{
pkgconf_list_t *dest = ((void *) pkg + offset);
(void) flags;
pkgconf_dependency_parse(pkg, dest, value);
}
/* keep this in alphabetical order */
static const pkgconf_pkg_parser_keyword_pair_t pkgconf_pkg_parser_keyword_funcs[] = {
{"CFLAGS", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, cflags)},
{"CFLAGS.private", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, cflags_private)},
{"Conflicts", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, conflicts)},
{"Description", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, description)},
{"LIBS", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, libs)},
{"LIBS.private", pkgconf_pkg_parser_fragment_func, offsetof(pkgconf_pkg_t, libs_private)},
{"Name", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, realname)},
{"Requires", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, requires)},
{"Requires.private", pkgconf_pkg_parser_dependency_func, offsetof(pkgconf_pkg_t, requires_private)},
{"Version", pkgconf_pkg_parser_tuple_func, offsetof(pkgconf_pkg_t, version)},
};
static bool
pkgconf_pkg_parser_keyword_set(pkgconf_pkg_t *pkg, const char *keyword, char *value, unsigned int flags)
{
const pkgconf_pkg_parser_keyword_pair_t *pair = bsearch(keyword,
pkgconf_pkg_parser_keyword_funcs, PKGCONF_ARRAY_SIZE(pkgconf_pkg_parser_keyword_funcs),
sizeof(pkgconf_pkg_parser_keyword_pair_t), pkgconf_pkg_parser_keyword_pair_cmp);
if (pair == NULL || pair->func == NULL)
return false;
pair->func(pkg, pair->offset, value, flags);
return true;
}
/*
* pkgconf_pkg_new_from_file(filename, file, flags)
*
@ -251,26 +317,9 @@ pkgconf_pkg_new_from_file(const char *filename, FILE *f, unsigned int flags)
switch (op)
{
case ':':
if (!strcmp(key, "Name"))
pkg->realname = pkgconf_tuple_parse(&pkg->vars, value);
else if (!strcmp(key, "Description"))
pkg->description = pkgconf_tuple_parse(&pkg->vars, value);
else if (!strcmp(key, "Version"))
pkg->version = pkgconf_tuple_parse(&pkg->vars, value);
else if (!strcasecmp(key, "CFLAGS"))
pkgconf_fragment_parse(&pkg->cflags, &pkg->vars, value, flags);
else if (!strcasecmp(key, "CFLAGS.private"))
pkgconf_fragment_parse(&pkg->cflags_private, &pkg->vars, value, flags);
else if (!strcasecmp(key, "LIBS"))
pkgconf_fragment_parse(&pkg->libs, &pkg->vars, value, flags);
else if (!strcasecmp(key, "LIBS.private"))
pkgconf_fragment_parse(&pkg->libs_private, &pkg->vars, value, flags);
else if (!strcmp(key, "Requires"))
pkgconf_dependency_parse(pkg, &pkg->requires, value);
else if (!strcmp(key, "Requires.private"))
pkgconf_dependency_parse(pkg, &pkg->requires_private, value);
else if (!strcmp(key, "Conflicts"))
pkgconf_dependency_parse(pkg, &pkg->conflicts, value);
if (!pkgconf_pkg_parser_keyword_set(pkg, key, value, flags))
/* XXX: warning? */
;
break;
case '=':
pkgconf_tuple_add(&pkg->vars, key, value, true);

1
libpkgconf/stdinc.h
View File

@ -20,6 +20,7 @@
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdarg.h>
#include <string.h>