mirror of
https://github.com/pygos/pkg-utils.git
synced 2024-05-07 06:56:15 +02:00
125 lines
2.2 KiB
C
125 lines
2.2 KiB
C
/* SPDX-License-Identifier: ISC */
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#include "buildstrategy.h"
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static hash_table_t tbl_sourcepkgs;
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static int src_pkg_destroy(void *usr, const char *name, void *p)
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{
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source_pkg_t *pkg = p;
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(void)name; (void)usr;
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free(pkg->name);
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free(pkg->depends);
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free(pkg);
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return 1;
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}
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int src_pkg_init(void)
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{
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return hash_table_init(&tbl_sourcepkgs, 1024);
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}
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void src_pkg_cleanup(void)
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{
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hash_table_foreach(&tbl_sourcepkgs, NULL, src_pkg_destroy);
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hash_table_cleanup(&tbl_sourcepkgs);
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}
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source_pkg_t *src_pkg_get(const char *name)
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{
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source_pkg_t *src = hash_table_lookup(&tbl_sourcepkgs, name);
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if (src == NULL) {
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src = calloc(1, sizeof(*src));
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if (src == NULL)
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goto fail_oom;
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src->name = strdup(name);
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if (src->name == NULL)
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goto fail_oom;
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if (hash_table_set(&tbl_sourcepkgs, name, src))
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goto fail;
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}
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return src;
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fail_oom:
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fputs("out of memory\n", stderr);
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fail:
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if (src != NULL)
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free(src->name);
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free(src);
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return NULL;
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}
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static int remove_untagged(void *usr, const char *name, void *p)
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{
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int mask = *((int *)usr);
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source_pkg_t *pkg = p;
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(void)name;
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if ((pkg->flags & mask) == 0) {
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free(pkg->name);
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free(pkg->depends);
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free(pkg);
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return 1;
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}
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return 0;
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}
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static int find_no_dep(void *usr, const char *name, void *p)
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{
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source_pkg_t *pkg = p;
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int *found = usr;
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if (pkg->num_depends == 0) {
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printf("%s\n", name);
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pkg->flags &= ~FLAG_BUILD_PKG;
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*found = 1;
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}
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return 0;
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}
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static int remove_unmarked_deps(void *usr, const char *name, void *p)
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{
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source_pkg_t *pkg = p;
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size_t i = 0;
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(void)usr; (void)name;
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while (i < pkg->num_depends) {
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if ((pkg->depends[i]->flags & FLAG_BUILD_PKG) == 0) {
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pkg->depends[i] = pkg->depends[pkg->num_depends - 1];
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pkg->num_depends -= 1;
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} else {
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++i;
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}
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}
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return 0;
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}
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int src_pkg_output_build_order(void)
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{
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int i = FLAG_BUILD_PKG;
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hash_table_foreach(&tbl_sourcepkgs, &i, remove_untagged);
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while (tbl_sourcepkgs.count > 0) {
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i = 0;
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hash_table_foreach(&tbl_sourcepkgs, &i, find_no_dep);
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if (!i) {
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fputs("cycle detected in package dependencies!\n",
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stderr);
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return -1;
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}
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hash_table_foreach(&tbl_sourcepkgs, NULL, remove_unmarked_deps);
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i = FLAG_BUILD_PKG;
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hash_table_foreach(&tbl_sourcepkgs, &i, remove_untagged);
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}
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return 0;
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}
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