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#include "cache_hash.hpp"
#include "os.hpp"
#include "compiler.hpp"
#include <stdio.h>
static Buf saved_dynamic_linker_path = BUF_INIT;
static bool searched_for_dyn_linker = false;
static void detect_dynamic_linker(Buf *lib_path) {
#if defined(ZIG_OS_LINUX)
for (size_t i = 0; possible_ld_names[i] != NULL; i += 1) {
if (buf_ends_with_str(lib_path, possible_ld_names[i])) {
buf_init_from_buf(&saved_dynamic_linker_path, lib_path);
break;
}
}
#endif
}
Buf *get_self_libc_path(void) {
static Buf saved_libc_path = BUF_INIT;
static bool searched_for_libc = false;
for (;;) {
if (saved_libc_path.list.length != 0) {
return &saved_libc_path;
}
if (searched_for_libc)
return nullptr;
ZigList<Buf *> lib_paths = {};
Error err;
if ((err = os_self_exe_shared_libs(lib_paths)))
return nullptr;
for (size_t i = 0; i < lib_paths.length; i += 1) {
Buf *lib_path = lib_paths.at(i);
if (buf_ends_with_str(lib_path, "libc.so.6")) {
buf_init_from_buf(&saved_libc_path, lib_path);
return &saved_libc_path;
}
}
searched_for_libc = true;
}
}
Buf *get_self_dynamic_linker_path(void) {
for (;;) {
if (saved_dynamic_linker_path.list.length != 0) {
return &saved_dynamic_linker_path;
}
if (searched_for_dyn_linker)
return nullptr;
ZigList<Buf *> lib_paths = {};
Error err;
if ((err = os_self_exe_shared_libs(lib_paths)))
return nullptr;
for (size_t i = 0; i < lib_paths.length; i += 1) {
Buf *lib_path = lib_paths.at(i);
detect_dynamic_linker(lib_path);
}
searched_for_dyn_linker = true;
}
}
Error get_compiler_id(Buf **result) {
static Buf saved_compiler_id = BUF_INIT;
if (saved_compiler_id.list.length != 0) {
*result = &saved_compiler_id;
return ErrorNone;
}
Error err;
Buf *manifest_dir = buf_alloc();
os_path_join(get_global_cache_dir(), buf_create_from_str("exe"), manifest_dir);
CacheHash cache_hash;
CacheHash *ch = &cache_hash;
cache_init(ch, manifest_dir);
Buf self_exe_path = BUF_INIT;
if ((err = os_self_exe_path(&self_exe_path)))
return err;
cache_file(ch, &self_exe_path);
buf_resize(&saved_compiler_id, 0);
if ((err = cache_hit(ch, &saved_compiler_id))) {
if (err != ErrorInvalidFormat)
return err;
}
if (buf_len(&saved_compiler_id) != 0) {
cache_release(ch);
*result = &saved_compiler_id;
return ErrorNone;
}
ZigList<Buf *> lib_paths = {};
if ((err = os_self_exe_shared_libs(lib_paths)))
return err;
for (size_t i = 0; i < lib_paths.length; i += 1) {
Buf *lib_path = lib_paths.at(i);
detect_dynamic_linker(lib_path);
if ((err = cache_add_file(ch, lib_path)))
return err;
}
if ((err = cache_final(ch, &saved_compiler_id)))
return err;
cache_release(ch);
*result = &saved_compiler_id;
return ErrorNone;
}
static bool test_zig_install_prefix(Buf *test_path, Buf *out_zig_lib_dir) {
{
Buf *test_zig_dir = buf_sprintf("%s" OS_SEP "lib" OS_SEP "zig", buf_ptr(test_path));
Buf *test_index_file = buf_sprintf("%s" OS_SEP "std" OS_SEP "std.zig", buf_ptr(test_zig_dir));
int err;
bool exists;
if ((err = os_file_exists(test_index_file, &exists))) {
exists = false;
}
if (exists) {
buf_init_from_buf(out_zig_lib_dir, test_zig_dir);
return true;
}
}
// Also try without "zig"
{
Buf *test_zig_dir = buf_sprintf("%s" OS_SEP "lib", buf_ptr(test_path));
Buf *test_index_file = buf_sprintf("%s" OS_SEP "std" OS_SEP "std.zig", buf_ptr(test_zig_dir));
int err;
bool exists;
if ((err = os_file_exists(test_index_file, &exists))) {
exists = false;
}
if (exists) {
buf_init_from_buf(out_zig_lib_dir, test_zig_dir);
return true;
}
}
return false;
}
static int find_zig_lib_dir(Buf *out_path) {
int err;
Buf self_exe_path = BUF_INIT;
buf_resize(&self_exe_path, 0);
if (!(err = os_self_exe_path(&self_exe_path))) {
Buf *cur_path = &self_exe_path;
for (;;) {
Buf *test_dir = buf_alloc();
os_path_dirname(cur_path, test_dir);
if (buf_eql_buf(test_dir, cur_path)) {
break;
}
if (test_zig_install_prefix(test_dir, out_path)) {
return 0;
}
cur_path = test_dir;
}
}
return ErrorFileNotFound;
}
Buf *get_zig_lib_dir(void) {
static Buf saved_lib_dir = BUF_INIT;
if (saved_lib_dir.list.length != 0)
return &saved_lib_dir;
buf_resize(&saved_lib_dir, 0);
int err;
if ((err = find_zig_lib_dir(&saved_lib_dir))) {
fprintf(stderr, "Unable to find zig lib directory\n");
exit(EXIT_FAILURE);
}
return &saved_lib_dir;
}
Buf *get_zig_std_dir(Buf *zig_lib_dir) {
static Buf saved_std_dir = BUF_INIT;
if (saved_std_dir.list.length != 0)
return &saved_std_dir;
buf_resize(&saved_std_dir, 0);
os_path_join(zig_lib_dir, buf_create_from_str("std"), &saved_std_dir);
return &saved_std_dir;
}
Buf *get_zig_special_dir(Buf *zig_lib_dir) {
static Buf saved_special_dir = BUF_INIT;
if (saved_special_dir.list.length != 0)
return &saved_special_dir;
buf_resize(&saved_special_dir, 0);
os_path_join(get_zig_std_dir(zig_lib_dir), buf_sprintf("special"), &saved_special_dir);
return &saved_special_dir;
}
Buf *get_global_cache_dir(void) {
static Buf saved_global_cache_dir = BUF_INIT;
if (saved_global_cache_dir.list.length != 0)
return &saved_global_cache_dir;
buf_resize(&saved_global_cache_dir, 0);
Buf app_data_dir = BUF_INIT;
Error err;
if ((err = os_get_app_data_dir(&app_data_dir, "zig"))) {
fprintf(stderr, "Unable to get application data dir: %s\n", err_str(err));
exit(1);
}
os_path_join(&app_data_dir, buf_create_from_str("stage1"), &saved_global_cache_dir);
buf_deinit(&app_data_dir);
return &saved_global_cache_dir;
}
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