pkgconf/main.c

389 lines
9.1 KiB
C

/*
* main.c
* main() routine, printer functions
*
* Copyright (c) 2011 William Pitcock <nenolod@dereferenced.org>.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <libgen.h>
#include "pkg.h"
#ifdef HAVE_GETOPT_LONG
# include <getopt.h>
#else
# include "bsdstubs.h"
#endif
/* we are compatible with 0.26 of pkg-config */
#define PKGCONFIG_VERSION_EQUIV "0.26"
static int want_help = 0;
static int want_version = 0;
static int want_cflags = 0;
static int want_libs = 0;
static int want_modversion = 0;
static int want_static = 0;
static int want_requires = 0;
static int want_variables = 0;
static int want_digraph = 0;
static int maximum_traverse_depth = 2;
static char *required_pkgconfig_version = NULL;
static char *required_module_version = NULL;
static char *want_variable = NULL;
static void
print_cflags(pkg_t *pkg, void *unused)
{
if (pkg->cflags != NULL)
printf("%s ", pkg->cflags);
}
static void
print_libs(pkg_t *pkg, void *unused)
{
if (pkg->libs != NULL)
printf("%s ", pkg->libs);
}
static void
print_modversion(pkg_t *pkg, void *unused)
{
if (pkg->version != NULL)
printf("%s\n", pkg->version);
}
static void
print_variable(pkg_t *pkg, void *unused)
{
char *variable;
variable = tuple_find(pkg->vars, want_variable);
if (variable != NULL)
printf("%s ", variable);
}
static void
print_variables(pkg_t *pkg, void *unused)
{
pkg_tuple_t *node;
foreach_list_entry(pkg->vars, node)
printf("%s\n", node->key);
}
static void
print_requires(pkg_t *pkg, void *unused)
{
pkg_dependency_t *node;
foreach_list_entry(pkg->requires, node)
{
printf("%s", node->package);
if (node->version != NULL)
printf(" %s %s", pkg_get_comparator(node), node->version);
printf("\n");
}
}
static void
print_digraph_node(pkg_t *pkg, void *unused)
{
pkg_dependency_t *node;
printf("\"%s\" [fontname=Sans fontsize=8]\n", pkg->id);
foreach_list_entry(pkg->requires, node)
{
printf("\"%s\" -- \"%s\" [fontname=Sans fontsize=8]\n", node->package, pkg->id);
}
}
typedef struct pkg_queue_ {
struct pkg_queue_ *prev, *next;
const char *package;
} pkg_queue_t;
static pkg_queue_t *
pkg_queue_push(pkg_queue_t *parent, const char *package)
{
pkg_queue_t *pkgq = calloc(sizeof(pkg_queue_t), 1);
pkgq->package = package;
pkgq->prev = parent;
if (pkgq->prev != NULL)
pkgq->prev->next = pkgq;
return pkgq;
}
int
pkg_queue_walk(pkg_queue_t *head)
{
int wanted_something = 0;
pkg_queue_t *pkgq;
pkg_t world = (pkg_t){
.id = "world",
.realname = "virtual"
};
/* if maximum_traverse_depth is one, then we will not traverse deeper
* than our virtual package.
*/
if (!maximum_traverse_depth)
maximum_traverse_depth = -1;
else if (maximum_traverse_depth > 0)
maximum_traverse_depth++;
foreach_list_entry(head, pkgq)
{
pkg_dependency_t *pkgdep;
pkgdep = parse_deplist(&world, pkgq->package);
world.requires = pkg_dependency_append(world.requires, pkgdep);
}
/* we should verify that the graph is complete before attempting to compute cflags etc. */
pkg_verify_graph(&world, maximum_traverse_depth);
if (want_digraph)
{
printf("graph deptree {\n");
printf("edge [color=blue len=7.5 fontname=Sans fontsize=8]\n");
printf("node [fontname=Sans fontsize=8]\n");
pkg_traverse(&world, print_digraph_node, NULL, maximum_traverse_depth);
printf("}\n");
return EXIT_SUCCESS;
}
if (want_modversion)
{
wanted_something = 0;
want_cflags = 0;
want_libs = 0;
pkg_traverse(&world, print_modversion, NULL, 2);
}
if (want_variables)
{
wanted_something = 0;
want_cflags = 0;
want_libs = 0;
pkg_traverse(&world, print_variables, NULL, 2);
}
if (want_requires)
{
pkg_dependency_t *iter;
wanted_something = 0;
want_cflags = 0;
want_libs = 0;
foreach_list_entry(world.requires, iter)
{
pkg_t *pkg;
pkg = pkg_verify_dependency(iter);
print_requires(pkg, NULL);
}
}
if (want_cflags)
{
wanted_something++;
pkg_traverse(&world, print_cflags, NULL, maximum_traverse_depth);
}
if (want_libs)
{
wanted_something++;
pkg_traverse(&world, print_libs, NULL, maximum_traverse_depth);
}
if (want_variable)
{
wanted_something++;
pkg_traverse(&world, print_variable, NULL, 2);
}
if (wanted_something)
printf("\n");
return EXIT_SUCCESS;
}
static void
version(void)
{
printf("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
}
static void
usage(void)
{
printf("usage: %s [OPTIONS] [LIBRARIES]\n", PACKAGE_NAME);
printf("\nbasic options:\n\n");
printf(" --help this message\n");
printf(" --version print pkgconf version to stdout\n");
printf(" --atleast-pkgconfig-version check whether or not pkgconf is compatible\n");
printf(" with a specified pkg-config version\n");
printf("\nchecking specific pkg-config database entries:\n\n");
printf(" --atleast-version require a specific version of a module\n");
printf(" --exists check whether or not a module exists\n");
printf(" --maximum-traverse-depth maximum allowed depth for dependency graph\n");
printf(" --static be more aggressive when computing dependency graph\n");
printf(" (for static linking)\n");
printf("\nquerying specific pkg-config database fields:\n\n");
printf(" --variable=varname print specified variable entry to stdout\n");
printf(" --cflags print required CFLAGS to stdout\n");
printf(" --libs print required linker flags to stdout\n");
printf(" --print-requires print required dependency frameworks to stdout\n");
printf(" --print-variables print all known variables in module to stdout\n");
printf(" --digraph print entire dependency graph in graphviz 'dot' format\n");
printf("\nreport bugs to <%s>.\n", PACKAGE_BUGREPORT);
}
int
main(int argc, char *argv[])
{
int ret;
pkg_queue_t *pkgq = NULL;
pkg_queue_t *pkgq_head = NULL;
struct option options[] = {
{ "version", no_argument, &want_version, 1, },
{ "atleast-version", required_argument, NULL, 2, },
{ "atleast-pkgconfig-version", required_argument, NULL, 3, },
{ "libs", no_argument, &want_libs, 4, },
{ "cflags", no_argument, &want_cflags, 5, },
{ "modversion", no_argument, &want_modversion, 6, },
{ "variable", required_argument, NULL, 7, },
{ "exists", no_argument, NULL, 8, },
{ "print-errors", no_argument, NULL, 9, },
{ "short-errors", no_argument, NULL, 10, },
{ "maximum-traverse-depth", required_argument, NULL, 11, },
{ "static", no_argument, &want_static, 12, },
{ "print-requires", no_argument, &want_requires, 13, },
{ "print-variables", no_argument, &want_variables, 14, },
{ "digraph", no_argument, &want_digraph, 15, },
{ "help", no_argument, &want_help, 16, },
{ NULL, 0, NULL, 0 }
};
while ((ret = getopt_long(argc, argv, "", options, NULL)) != -1)
{
switch (ret)
{
case 2:
required_module_version = optarg;
break;
case 3:
required_pkgconfig_version = optarg;
break;
case 7:
want_variable = optarg;
break;
case 11:
maximum_traverse_depth = atoi(optarg);
break;
default:
break;
}
}
if (want_version)
{
version();
return EXIT_SUCCESS;
}
if (want_help)
{
usage();
return EXIT_SUCCESS;
}
if (want_static)
maximum_traverse_depth++;
if (required_pkgconfig_version != NULL)
{
if (pkg_compare_version(PKGCONFIG_VERSION_EQUIV, required_pkgconfig_version) >= 0)
return EXIT_SUCCESS;
return EXIT_FAILURE;
}
if (required_module_version != NULL)
{
pkg_t *pkg;
const char *package;
package = argv[optind];
if (package == NULL)
return EXIT_SUCCESS;
pkg = pkg_find(package);
if (pkg == NULL)
return EXIT_FAILURE;
if (pkg_compare_version(pkg->version, required_module_version) >= 0)
return EXIT_SUCCESS;
return EXIT_FAILURE;
}
while (1)
{
const char *package = argv[optind++];
if (package == NULL)
break;
pkgq = pkg_queue_push(pkgq, package);
if (pkgq_head == NULL)
pkgq_head = pkgq;
}
if (pkgq_head == NULL)
{
fprintf(stderr, "Please specify at least one package name on the command line.\n");
return EXIT_FAILURE;
}
return pkg_queue_walk(pkgq_head);
}