From 5ee185a4896e43c67b6d299becfa616da78fb9f4 Mon Sep 17 00:00:00 2001 From: Bruce Hill Date: Fri, 21 Mar 2025 21:48:53 -0400 Subject: Move stdlib into src/ --- stdlib/paths.c | 822 --------------------------------------------------------- 1 file changed, 822 deletions(-) delete mode 100644 stdlib/paths.c (limited to 'stdlib/paths.c') diff --git a/stdlib/paths.c b/stdlib/paths.c deleted file mode 100644 index c7743759..00000000 --- a/stdlib/paths.c +++ /dev/null @@ -1,822 +0,0 @@ -// A lang for filesystem paths -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "arrays.h" -#include "enums.h" -#include "files.h" -#include "integers.h" -#include "optionals.h" -#include "paths.h" -#include "patterns.h" -#include "structs.h" -#include "text.h" -#include "types.h" -#include "util.h" - -// Use inline version of the siphash code for performance: -#include "siphash.h" -#include "siphash-internals.h" - -static const Path_t HOME_PATH = {.type.$tag=PATH_HOME}, - ROOT_PATH = {.type.$tag=PATH_ABSOLUTE}, - CURDIR_PATH = {.type.$tag=PATH_RELATIVE}; - -static void clean_components(Array_t *components) -{ - for (int64_t i = 0; i < components->length; ) { - Text_t *component = (Text_t*)(components->data + i*components->stride); - if (component->length == 0 || Text$equal_values(*component, Text("."))) { - Array$remove_at(components, I(i+1), I(1), sizeof(Text_t)); - } else if (i > 0 && Text$equal_values(*component, Text(".."))) { - Text_t *prev = (Text_t*)(components->data + (i-1)*components->stride); - if (!Text$equal_values(*prev, Text(".."))) { - Array$remove_at(components, I(i), I(2), sizeof(Text_t)); - i -= 1; - } else { - i += 1; - } - } else { - i += 1; - } - } -} - -public Path_t Path$from_str(const char *str) -{ - if (!str || str[0] == '\0' || streq(str, "/")) return ROOT_PATH; - else if (streq(str, "~")) return HOME_PATH; - else if (streq(str, ".")) return CURDIR_PATH; - - Path_t result = {.components={}}; - if (str[0] == '/') { - result.type.$tag = PATH_ABSOLUTE; - str += 1; - } else if (str[0] == '~' && str[1] == '/') { - result.type.$tag = PATH_HOME; - str += 2; - } else if (str[0] == '.' && str[1] == '/') { - result.type.$tag = PATH_RELATIVE; - str += 2; - } else { - result.type.$tag = PATH_RELATIVE; - } - - while (str && *str) { - size_t component_len = strcspn(str, "/"); - if (component_len > 0) { - if (component_len == 1 && str[0] == '.') { - // ignore /./ - } else if (component_len == 2 && strncmp(str, "..", 2) == 0 - && result.components.length > 1 - && !Text$equal_values(Text(".."), *(Text_t*)(result.components.data + result.components.stride*(result.components.length-1)))) { - // Pop off /foo/baz/.. -> /foo - Array$remove_at(&result.components, I(result.components.length), I(1), sizeof(Text_t)); - } else { - Text_t component = Text$from_strn(str, component_len); - Array$insert_value(&result.components, component, I(0), sizeof(Text_t)); - } - str += component_len; - } - str += strspn(str, "/"); - } - return result; -} - -public Path_t Path$from_text(Text_t text) -{ - return Path$from_str(Text$as_c_string(text)); -} - -public Path_t Path$expand_home(Path_t path) -{ - if (path.type.$tag == PATH_HOME) { - Path_t pwd = Path$from_str(getenv("HOME")); - Array_t components = Array$concat(pwd.components, path.components, sizeof(Text_t)); - assert(components.length == path.components.length + pwd.components.length); - clean_components(&components); - path = (Path_t){.type.$tag=PATH_ABSOLUTE, .components=components}; - } - return path; -} - -public Path_t Path$_concat(int n, Path_t items[n]) -{ - assert(n > 0); - Path_t result = items[0]; - ARRAY_INCREF(result.components); - for (int i = 1; i < n; i++) { - if (items[i].type.$tag != PATH_RELATIVE) - fail("Cannot concatenate an absolute or home-based path onto another path: (%s)\n", - Path$as_c_string(items[i])); - Array$insert_all(&result.components, items[i].components, I(0), sizeof(Text_t)); - } - clean_components(&result.components); - return result; -} - -public Path_t Path$resolved(Path_t path, Path_t relative_to) -{ - if (path.type.$tag == PATH_RELATIVE && !(relative_to.type.$tag == PATH_RELATIVE && relative_to.components.length == 0)) { - Path_t result = {.type.$tag=relative_to.type.$tag}; - result.components = relative_to.components; - ARRAY_INCREF(result.components); - Array$insert_all(&result.components, path.components, I(0), sizeof(Text_t)); - clean_components(&result.components); - return result; - } - return path; -} - -public Path_t Path$relative_to(Path_t path, Path_t relative_to) -{ - if (path.type.$tag != relative_to.type.$tag) - fail("Cannot create a path relative to a different path with a mismatching type: (%k) relative to (%k)", - (Text_t[1]){Path$as_text(&path, false, &Path$info)}, (Text_t[1]){Path$as_text(&relative_to, false, &Path$info)}); - - Path_t result = {.type.$tag=PATH_RELATIVE}; - int64_t shared = 0; - for (; shared < path.components.length && shared < relative_to.components.length; shared++) { - Text_t *p = (Text_t*)(path.components.data + shared*path.components.stride); - Text_t *r = (Text_t*)(relative_to.components.data + shared*relative_to.components.stride); - if (!Text$equal_values(*p, *r)) - break; - } - - for (int64_t i = shared; i < relative_to.components.length; i++) - Array$insert_value(&result.components, Text(".."), I(1), sizeof(Text_t)); - - for (int64_t i = shared; i < path.components.length; i++) { - Text_t *p = (Text_t*)(path.components.data + i*path.components.stride); - Array$insert(&result.components, p, I(0), sizeof(Text_t)); - } - //clean_components(&result.components); - return result; -} - -public bool Path$exists(Path_t path) -{ - path = Path$expand_home(path); - struct stat sb; - return (stat(Path$as_c_string(path), &sb) == 0); -} - -static INLINE int path_stat(Path_t path, bool follow_symlinks, struct stat *sb) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - return follow_symlinks ? stat(path_str, sb) : lstat(path_str, sb); -} - -public bool Path$is_file(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return false; - return (sb.st_mode & S_IFMT) == S_IFREG; -} - -public bool Path$is_directory(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return false; - return (sb.st_mode & S_IFMT) == S_IFDIR; -} - -public bool Path$is_pipe(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return false; - return (sb.st_mode & S_IFMT) == S_IFIFO; -} - -public bool Path$is_socket(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return false; - return (sb.st_mode & S_IFMT) == S_IFSOCK; -} - -public bool Path$is_symlink(Path_t path) -{ - struct stat sb; - int status = path_stat(path, false, &sb); - if (status != 0) return false; - return (sb.st_mode & S_IFMT) == S_IFLNK; -} - -public bool Path$can_read(Path_t path) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - return (euidaccess(path_str, R_OK) == 0); -} - -public bool Path$can_write(Path_t path) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - return (euidaccess(path_str, W_OK) == 0); -} - -public bool Path$can_execute(Path_t path) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - return (euidaccess(path_str, X_OK) == 0); -} - -public OptionalMoment_t Path$modified(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return NONE_MOMENT; - return (Moment_t){.tv_sec=sb.st_mtime}; -} - -public OptionalMoment_t Path$accessed(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return NONE_MOMENT; - return (Moment_t){.tv_sec=sb.st_atime}; -} - -public OptionalMoment_t Path$changed(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return NONE_MOMENT; - return (Moment_t){.tv_sec=sb.st_ctime}; -} - -static void _write(Path_t path, Array_t bytes, int mode, int permissions) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - int fd = open(path_str, mode, permissions); - if (fd == -1) - fail("Could not write to file: %s\n%s", path_str, strerror(errno)); - - if (bytes.stride != 1) - Array$compact(&bytes, 1); - ssize_t written = write(fd, bytes.data, (size_t)bytes.length); - if (written != (ssize_t)bytes.length) - fail("Could not write to file: %s\n%s", path_str, strerror(errno)); - close(fd); -} - -public void Path$write(Path_t path, Text_t text, int permissions) -{ - Array_t bytes = Text$utf8_bytes(text); - _write(path, bytes, O_WRONLY | O_CREAT, permissions); -} - -public void Path$write_bytes(Path_t path, Array_t bytes, int permissions) -{ - _write(path, bytes, O_WRONLY | O_CREAT, permissions); -} - -public void Path$append(Path_t path, Text_t text, int permissions) -{ - Array_t bytes = Text$utf8_bytes(text); - _write(path, bytes, O_WRONLY | O_APPEND | O_CREAT, permissions); -} - -public void Path$append_bytes(Path_t path, Array_t bytes, int permissions) -{ - _write(path, bytes, O_WRONLY | O_APPEND | O_CREAT, permissions); -} - -public OptionalArray_t Path$read_bytes(Path_t path, OptionalInt_t count) -{ - path = Path$expand_home(path); - int fd = open(Path$as_c_string(path), O_RDONLY); - if (fd == -1) - return NONE_ARRAY; - - struct stat sb; - if (fstat(fd, &sb) != 0) - return NONE_ARRAY; - - int64_t const target_count = count.small ? Int64$from_int(count, false) : INT64_MAX; - if (target_count < 0) - fail("Cannot read a negative number of bytes!"); - - if ((sb.st_mode & S_IFMT) == S_IFREG) { // Use memory mapping if it's a real file: - const char *mem = mmap(NULL, (size_t)sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0); - char *content = GC_MALLOC_ATOMIC((size_t)sb.st_size+1); - memcpy(content, mem, (size_t)sb.st_size); - content[sb.st_size] = '\0'; - close(fd); - if (count.small && (int64_t)sb.st_size < target_count) - fail("Could not read %ld bytes from %k (only got %zu)", target_count, &path, sb.st_size); - int64_t len = count.small ? target_count : (int64_t)sb.st_size; - return (Array_t){.data=content, .atomic=1, .stride=1, .length=len}; - } else { - size_t capacity = 256, len = 0; - char *content = GC_MALLOC_ATOMIC(capacity); - int64_t count_remaining = target_count; - for (;;) { - char chunk[256]; - size_t to_read = count_remaining < (int64_t)sizeof(chunk) ? (size_t)count_remaining : sizeof(chunk); - ssize_t just_read = read(fd, chunk, to_read); - if (just_read < 0) { - close(fd); - return NONE_ARRAY; - } else if (just_read == 0) { - if (errno == EAGAIN || errno == EINTR) - continue; - break; - } - count_remaining -= (int64_t)just_read; - - if (len + (size_t)just_read >= capacity) { - content = GC_REALLOC(content, (capacity *= 2)); - } - - memcpy(&content[len], chunk, (size_t)just_read); - len += (size_t)just_read; - } - close(fd); - if (count.small != 0 && (int64_t)len < target_count) - fail("Could not read %ld bytes from %k (only got %zu)", target_count, &path, len); - return (Array_t){.data=content, .atomic=1, .stride=1, .length=len}; - } -} - -public OptionalText_t Path$read(Path_t path) -{ - Array_t bytes = Path$read_bytes(path, NONE_INT); - if (bytes.length < 0) return NONE_TEXT; - return Text$from_bytes(bytes); -} - -public OptionalText_t Path$owner(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return NONE_TEXT; - struct passwd *pw = getpwuid(sb.st_uid); - return pw ? Text$from_str(pw->pw_name) : NONE_TEXT; -} - -public OptionalText_t Path$group(Path_t path, bool follow_symlinks) -{ - struct stat sb; - int status = path_stat(path, follow_symlinks, &sb); - if (status != 0) return NONE_TEXT; - struct group *gr = getgrgid(sb.st_uid); - return gr ? Text$from_str(gr->gr_name) : NONE_TEXT; -} - -public void Path$set_owner(Path_t path, OptionalText_t owner, OptionalText_t group, bool follow_symlinks) -{ - uid_t owner_id = (uid_t)-1; - if (owner.length >= 0) { - struct passwd *pwd = getpwnam(Text$as_c_string(owner)); - if (pwd == NULL) fail("Not a valid user: %k", &owner); - owner_id = pwd->pw_uid; - } - - gid_t group_id = (gid_t)-1; - if (group.length >= 0) { - struct group *grp = getgrnam(Text$as_c_string(group)); - if (grp == NULL) fail("Not a valid group: %k", &group); - group_id = grp->gr_gid; - } - const char *path_str = Path$as_c_string(path); - int result = follow_symlinks ? chown(path_str, owner_id, group_id) : lchown(path_str, owner_id, group_id); - if (result < 0) - fail("Could not set owner!"); -} - -public void Path$remove(Path_t path, bool ignore_missing) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - struct stat sb; - if (lstat(path_str, &sb) != 0) { - if (!ignore_missing) - fail("Could not remove file: %s (%s)", path_str, strerror(errno)); - } - - if ((sb.st_mode & S_IFMT) == S_IFREG || (sb.st_mode & S_IFMT) == S_IFLNK) { - if (unlink(path_str) != 0 && !ignore_missing) - fail("Could not remove file: %s (%s)", path_str, strerror(errno)); - } else if ((sb.st_mode & S_IFMT) == S_IFDIR) { - if (rmdir(path_str) != 0 && !ignore_missing) - fail("Could not remove directory: %s (%s)", path_str, strerror(errno)); - } else { - fail("Could not remove path: %s (not a file or directory)", path_str, strerror(errno)); - } -} - -public void Path$create_directory(Path_t path, int permissions) -{ - path = Path$expand_home(path); - const char *c_path = Path$as_c_string(path); - int status = mkdir(c_path, (mode_t)permissions); - if (status != 0 && errno != EEXIST) - fail("Could not create directory: %s (%s)", c_path, strerror(errno)); -} - -static Array_t _filtered_children(Path_t path, bool include_hidden, mode_t filter) -{ - path = Path$expand_home(path); - struct dirent *dir; - Array_t children = {}; - const char *path_str = Path$as_c_string(path); - size_t path_len = strlen(path_str); - DIR *d = opendir(path_str); - if (!d) - fail("Could not open directory: %k (%s)", &path, strerror(errno)); - - if (path_str[path_len-1] == '/') - --path_len; - - while ((dir = readdir(d)) != NULL) { - if (!include_hidden && dir->d_name[0] == '.') - continue; - if (streq(dir->d_name, ".") || streq(dir->d_name, "..")) - continue; - - const char *child_str = heap_strf("%.*s/%s", path_len, path_str, dir->d_name); - struct stat sb; - if (stat(child_str, &sb) != 0) - continue; - if (!((sb.st_mode & S_IFMT) & filter)) - continue; - - Path_t child = Path$from_str(child_str); - Array$insert(&children, &child, I(0), sizeof(Path_t)); - } - closedir(d); - return children; -} - -public Array_t Path$children(Path_t path, bool include_hidden) -{ - return _filtered_children(path, include_hidden, (mode_t)-1); -} - -public Array_t Path$files(Path_t path, bool include_hidden) -{ - return _filtered_children(path, include_hidden, S_IFREG); -} - -public Array_t Path$subdirectories(Path_t path, bool include_hidden) -{ - return _filtered_children(path, include_hidden, S_IFDIR); -} - -public Path_t Path$unique_directory(Path_t path) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - size_t len = strlen(path_str); - if (len >= PATH_MAX) fail("Path is too long: %s", path_str); - char buf[PATH_MAX] = {}; - strcpy(buf, path_str); - if (buf[len-1] == '/') - buf[--len] = '\0'; - char *created = mkdtemp(buf); - if (!created) fail("Failed to create temporary directory: %s (%s)", path_str, strerror(errno)); - return Path$from_str(created); -} - -public Path_t Path$write_unique_bytes(Path_t path, Array_t bytes) -{ - path = Path$expand_home(path); - const char *path_str = Path$as_c_string(path); - size_t len = strlen(path_str); - if (len >= PATH_MAX) fail("Path is too long: %s", path_str); - char buf[PATH_MAX] = {}; - strcpy(buf, path_str); - - // Count the number of trailing characters leading up to the last "X" - // (e.g. "foo_XXXXXX.tmp" would yield suffixlen = 4) - size_t suffixlen = 0; - while (suffixlen < len && buf[len - 1 - suffixlen] != 'X') - ++suffixlen; - - int fd = mkstemps(buf, suffixlen); - if (fd == -1) - fail("Could not write to unique file: %s\n%s", buf, strerror(errno)); - - if (bytes.stride != 1) - Array$compact(&bytes, 1); - - ssize_t written = write(fd, bytes.data, (size_t)bytes.length); - if (written != (ssize_t)bytes.length) - fail("Could not write to file: %s\n%s", buf, strerror(errno)); - close(fd); - return Path$from_str(buf); -} - -public Path_t Path$write_unique(Path_t path, Text_t text) -{ - return Path$write_unique_bytes(path, Text$utf8_bytes(text)); -} - -public Path_t Path$parent(Path_t path) -{ - if (path.type.$tag == PATH_ABSOLUTE && path.components.length == 0) { - return path; - } else if (path.components.length > 0 && !Text$equal_values(*(Text_t*)(path.components.data + path.components.stride*(path.components.length-1)), - Text(".."))) { - return (Path_t){.type.$tag=path.type.$tag, .components=Array$slice(path.components, I(1), I(-2))}; - } else { - Path_t result = {.type.$tag=path.type.$tag, .components=path.components}; - ARRAY_INCREF(result.components); - Array$insert_value(&result.components, Text(".."), I(0), sizeof(Text_t)); - return result; - } -} - -public PUREFUNC Text_t Path$base_name(Path_t path) -{ - if (path.components.length >= 1) - return *(Text_t*)(path.components.data + path.components.stride*(path.components.length-1)); - else if (path.type.$tag == PATH_HOME) - return Text("~"); - else if (path.type.$tag == PATH_RELATIVE) - return Text("."); - else - return EMPTY_TEXT; -} - -public Text_t Path$extension(Path_t path, bool full) -{ - Text_t base = Path$base_name(path); - Array_t results = Text$matches(base, full ? Pattern(".{!.}.{..}") : Pattern(".{..}.{!.}{end}")); - if (results.length > 0) - return *((Text_t*)(results.data + results.stride*1)); - results = Text$matches(base, full ? Pattern("{!.}.{..}") : Pattern("{..}.{!.}{end}")); - if (results.length > 0) - return *((Text_t*)(results.data + results.stride*1)); - else - return Text(""); -} - -public Path_t Path$with_component(Path_t path, Text_t component) -{ - Path_t result = { - .type.$tag=path.type.$tag, - .components=path.components, - }; - ARRAY_INCREF(result.components); - Array$insert(&result.components, &component, I(0), sizeof(Text_t)); - clean_components(&result.components); - return result; -} - -public Path_t Path$with_extension(Path_t path, Text_t extension, bool replace) -{ - if (path.components.length == 0) - fail("A path with no components can't have an extension!"); - - Path_t result = { - .type.$tag=path.type.$tag, - .components=path.components, - }; - ARRAY_INCREF(result.components); - Text_t last = *(Text_t*)(path.components.data + path.components.stride*(path.components.length-1)); - Array$remove_at(&result.components, I(-1), I(1), sizeof(Text_t)); - if (replace) { - if (Text$starts_with(last, Text("."))) - last = Text$replace(last, Pattern(".{!.}.{..}"), Text(".@1"), Pattern("@"), false); - else - last = Text$replace(last, Pattern("{!.}.{..}"), Text("@1"), Pattern("@"), false); - } - - last = Text$concat(last, extension); - Array$insert(&result.components, &last, I(0), sizeof(Text_t)); - return result; -} - -static void _line_reader_cleanup(FILE **f) -{ - if (f && *f) { - fclose(*f); - *f = NULL; - } -} - -static Text_t _next_line(FILE **f) -{ - if (!f || !*f) return NONE_TEXT; - - char *line = NULL; - size_t size = 0; - ssize_t len = getline(&line, &size, *f); - if (len <= 0) { - _line_reader_cleanup(f); - return NONE_TEXT; - } - - while (len > 0 && (line[len-1] == '\r' || line[len-1] == '\n')) - --len; - - if (u8_check((uint8_t*)line, (size_t)len) != NULL) - fail("Invalid UTF8!"); - - Text_t line_text = Text$from_strn(line, (size_t)len); - free(line); - return line_text; -} - -public OptionalClosure_t Path$by_line(Path_t path) -{ - path = Path$expand_home(path); - - FILE *f = fopen(Path$as_c_string(path), "r"); - if (f == NULL) - return NONE_CLOSURE; - - FILE **wrapper = GC_MALLOC(sizeof(FILE*)); - *wrapper = f; - GC_register_finalizer(wrapper, (void*)_line_reader_cleanup, NULL, NULL, NULL); - return (Closure_t){.fn=(void*)_next_line, .userdata=wrapper}; -} - -public Array_t Path$glob(Path_t path) -{ - glob_t glob_result; - int status = glob(Path$as_c_string(path), GLOB_BRACE | GLOB_TILDE | GLOB_TILDE_CHECK, NULL, &glob_result); - if (status != 0 && status != GLOB_NOMATCH) - fail("Failed to perform globbing"); - - Array_t glob_files = {}; - for (size_t i = 0; i < glob_result.gl_pathc; i++) { - size_t len = strlen(glob_result.gl_pathv[i]); - if ((len >= 2 && glob_result.gl_pathv[i][len-1] == '.' && glob_result.gl_pathv[i][len-2] == '/') - || (len >= 2 && glob_result.gl_pathv[i][len-1] == '.' && glob_result.gl_pathv[i][len-2] == '.' && glob_result.gl_pathv[i][len-3] == '/')) - continue; - Path_t p = Path$from_str(glob_result.gl_pathv[i]); - Array$insert(&glob_files, &p, I(0), sizeof(Path_t)); - } - return glob_files; -} - -public PUREFUNC uint64_t Path$hash(const void *obj, const TypeInfo_t *type) -{ - (void)type; - Path_t *path = (Path_t*)obj; - siphash sh; - siphashinit(&sh, (uint64_t)path->type.$tag); - for (int64_t i = 0; i < path->components.length; i++) { - uint64_t item_hash = Text$hash(path->components.data + i*path->components.stride, &Text$info); - siphashadd64bits(&sh, item_hash); - } - return siphashfinish_last_part(&sh, (uint64_t)path->components.length); -} - -public PUREFUNC int32_t Path$compare(const void *va, const void *vb, const TypeInfo_t *type) -{ - (void)type; - Path_t *a = (Path_t*)va, *b = (Path_t*)vb; - int diff = ((int)a->type.$tag - (int)b->type.$tag); - if (diff != 0) return diff; - return Array$compare(&a->components, &b->components, Array$info(&Text$info)); -} - -public PUREFUNC bool Path$equal(const void *va, const void *vb, const TypeInfo_t *type) -{ - (void)type; - Path_t *a = (Path_t*)va, *b = (Path_t*)vb; - if (a->type.$tag != b->type.$tag) return false; - return Array$equal(&a->components, &b->components, Array$info(&Text$info)); -} - -public PUREFUNC bool Path$equal_values(Path_t a, Path_t b) -{ - if (a.type.$tag != b.type.$tag) return false; - return Array$equal(&a.components, &b.components, Array$info(&Text$info)); -} - -public const char *Path$as_c_string(Path_t path) -{ - if (path.components.length == 0) { - if (path.type.$tag == PATH_ABSOLUTE) return "/"; - else if (path.type.$tag == PATH_RELATIVE) return "."; - else if (path.type.$tag == PATH_HOME) return "~"; - } - - size_t len = 0, capacity = 16; - char *buf = GC_MALLOC_ATOMIC(capacity); - if (path.type.$tag == PATH_ABSOLUTE) { - buf[len++] = '/'; - } else if (path.type.$tag == PATH_HOME) { - buf[len++] = '~'; - buf[len++] = '/'; - } else if (path.type.$tag == PATH_RELATIVE) { - if (!Text$equal_values(*(Text_t*)path.components.data, Text(".."))) { - buf[len++] = '.'; - buf[len++] = '/'; - } - } - - for (int64_t i = 0; i < path.components.length; i++) { - Text_t *comp = (Text_t*)(path.components.data + i*path.components.stride); - const char *comp_str = Text$as_c_string(*comp); - size_t comp_len = strlen(comp_str); - if (len + comp_len + 1 > capacity) { - buf = GC_REALLOC(buf, (capacity += MIN(comp_len + 2, 16))); - } - memcpy(&buf[len], comp_str, comp_len); - len += comp_len; - if (i + 1 < path.components.length) - buf[len++] = '/'; - } - buf[len++] = '\0'; - return buf; -} - -public Text_t Path$as_text(const void *obj, bool color, const TypeInfo_t *type) -{ - (void)type; - if (!obj) return Text("Path"); - Path_t *path = (Path_t*)obj; - Text_t text = Text$join(Text("/"), path->components); - if (path->type.$tag == PATH_HOME) - text = Text$concat(path->components.length > 0 ? Text("~/") : Text("~"), text); - else if (path->type.$tag == PATH_ABSOLUTE) - text = Text$concat(Text("/"), text); - else if (path->type.$tag == PATH_RELATIVE && (path->components.length == 0 || !Text$equal_values(*(Text_t*)(path->components.data), Text("..")))) - text = Text$concat(path->components.length > 0 ? Text("./") : Text("."), text); - - if (color) - text = Texts(Text("\033[32;1m"), text, Text("\033[m")); - - return text; -} - -public CONSTFUNC bool Path$is_none(const void *obj, const TypeInfo_t *type) -{ - (void)type; - return ((Path_t*)obj)->type.$tag == PATH_NONE; -} - -public void Path$serialize(const void *obj, FILE *out, Table_t *pointers, const TypeInfo_t *type) -{ - (void)type; - Path_t *path = (Path_t*)obj; - fputc((int)path->type.$tag, out); - Array$serialize(&path->components, out, pointers, Array$info(&Text$info)); -} - -public void Path$deserialize(FILE *in, void *obj, Array_t *pointers, const TypeInfo_t *type) -{ - (void)type; - Path_t path = {}; - path.type.$tag = fgetc(in); - Array$deserialize(in, &path.components, pointers, Array$info(&Text$info)); - *(Path_t*)obj = path; -} - -public const TypeInfo_t Path$info = { - .size=sizeof(Path_t), - .align=__alignof__(Path_t), - .tag=OpaqueInfo, - .metamethods={ - .as_text=Path$as_text, - .hash=Path$hash, - .compare=Path$compare, - .equal=Path$equal, - .is_none=Path$is_none, - .serialize=Path$serialize, - .deserialize=Path$deserialize, - } -}; - -public const TypeInfo_t PathType$info = { - .size=sizeof(PathType_t), - .align=__alignof__(PathType_t), - .metamethods=PackedDataEnum$metamethods, - .tag=EnumInfo, - .EnumInfo={ - .name="PathType", - .num_tags=3, - .tags=((NamedType_t[3]){{.name="Relative"}, {.name="Absolute"}, {.name="Home"}}), - }, -}; - -// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0 -- cgit v1.2.3