mirror of
https://github.com/janet-lang/janet
synced 2024-06-21 12:43:15 +00:00
Update os/stat
os/stat can now take a keyword as the second argument to avoid creating a table if one only wants on value from stat.
This commit is contained in:
Calvin Rose
parent
429dc70374
commit
b15cf193a0
117
src/core/os.c
117
src/core/os.c
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@ -450,43 +450,94 @@ static const uint8_t *janet_decode_mode(mode_t m) {
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}
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#endif
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/* Can we do this? */
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#ifdef JANET_WINDOWS
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#define stat _stat
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#endif
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/* Getters */
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static Janet os_stat_dev(struct stat *st) { return janet_wrap_number(st->st_dev); }
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static Janet os_stat_inode(struct stat *st) { return janet_wrap_number(st->st_ino); }
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static Janet os_stat_mode(struct stat *st) { return janet_wrap_keyword(janet_decode_mode(st->st_mode)); }
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static Janet os_stat_permissions(struct stat *st) { return janet_wrap_string(janet_decode_permissions(st->st_mode)); }
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static Janet os_stat_uid(struct stat *st) { return janet_wrap_number(st->st_uid); }
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static Janet os_stat_gid(struct stat *st) { return janet_wrap_number(st->st_gid); }
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static Janet os_stat_nlink(struct stat *st) { return janet_wrap_number(st->st_nlink); }
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static Janet os_stat_rdev(struct stat *st) { return janet_wrap_number(st->st_rdev); }
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static Janet os_stat_size(struct stat *st) { return janet_wrap_number(st->st_size); }
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static Janet os_stat_accessed(struct stat *st) { return janet_wrap_number((double) st->st_atime); }
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static Janet os_stat_modified(struct stat *st) { return janet_wrap_number((double) st->st_mtime); }
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static Janet os_stat_changed(struct stat *st) { return janet_wrap_number((double) st->st_ctime); }
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#ifdef JANET_WINDOWS
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static Janet os_stat_blocks(struct stat *st) { return janet_wrap_number(0); }
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static Janet os_stat_blocksize(struct stat *st) { return janet_wrap_number(0); }
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#else
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static Janet os_stat_blocks(struct stat *st) { return janet_wrap_number(st->st_blocks); }
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static Janet os_stat_blocksize(struct stat *st) { return janet_wrap_number(st->st_blksize); }
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#endif
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struct OsStatGetter {
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const char *name;
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Janet (*fn)(struct stat *st);
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};
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static const struct OsStatGetter os_stat_getters[] = {
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{"dev", os_stat_dev},
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{"inode", os_stat_inode},
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{"mode", os_stat_mode},
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{"permissions", os_stat_permissions},
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{"uid", os_stat_uid},
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{"gid", os_stat_gid},
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{"nlink", os_stat_nlink},
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{"rdev", os_stat_rdev},
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{"size", os_stat_size},
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{"blocks", os_stat_blocks},
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{"blocksize", os_stat_blocksize},
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{"accessed", os_stat_accessed},
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{"modified", os_stat_modified},
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{"changed", os_stat_changed},
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{NULL, NULL}
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};
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static Janet os_stat(int32_t argc, Janet *argv) {
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janet_arity(argc, 1, 2);
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const char *path = janet_getcstring(argv, 0);
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JanetTable *tab;
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JanetTable *tab = NULL;
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int getall = 1;
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const uint8_t *key;
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if (argc == 2) {
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tab = janet_gettable(argv, 1);
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if (janet_checktype(argv[1], JANET_KEYWORD)) {
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getall = 0;
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key = janet_getkeyword(argv, 1);
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} else {
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tab = janet_gettable(argv, 1);
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}
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} else {
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tab = janet_table(0);
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}
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/* Build result */
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#ifdef JANET_WINDOWS
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struct _stat st;
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int res = _stat(path, &st);
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#else
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struct stat st;
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int res = stat(path, &st);
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#endif
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if (-1 == res) {
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janet_panicv(janet_cstringv(strerror(errno)));
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}
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janet_table_put(tab, janet_ckeywordv("dev"), janet_wrap_number(st.st_dev));
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janet_table_put(tab, janet_ckeywordv("inode"), janet_wrap_number(st.st_ino));
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janet_table_put(tab, janet_ckeywordv("mode"), janet_wrap_keyword(janet_decode_mode(st.st_mode)));
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janet_table_put(tab, janet_ckeywordv("permissions"), janet_wrap_string(janet_decode_permissions(st.st_mode)));
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janet_table_put(tab, janet_ckeywordv("uid"), janet_wrap_number(st.st_uid));
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janet_table_put(tab, janet_ckeywordv("gid"), janet_wrap_number(st.st_gid));
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janet_table_put(tab, janet_ckeywordv("size"), janet_wrap_number(st.st_size));
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janet_table_put(tab, janet_ckeywordv("nlink"), janet_wrap_number(st.st_nlink));
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janet_table_put(tab, janet_ckeywordv("rdev"), janet_wrap_number(st.st_rdev));
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#ifndef JANET_WINDOWS
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janet_table_put(tab, janet_ckeywordv("blocksize"), janet_wrap_number(st.st_blksize));
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janet_table_put(tab, janet_ckeywordv("blocks"), janet_wrap_number(st.st_blocks));
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#endif
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janet_table_put(tab, janet_ckeywordv("accessed"), janet_wrap_number((double) st.st_atime));
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janet_table_put(tab, janet_ckeywordv("modified"), janet_wrap_number((double) st.st_mtime));
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janet_table_put(tab, janet_ckeywordv("changed"), janet_wrap_number((double) st.st_ctime));
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return janet_wrap_table(tab);
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if (getall) {
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/* Put results in table */
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for (const struct OsStatGetter *sg = os_stat_getters; sg->name != NULL; sg++) {
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janet_table_put(tab, janet_ckeywordv(sg->name), sg->fn(&st));
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}
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return janet_wrap_table(tab);
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} else {
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/* Get one result */
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for (const struct OsStatGetter *sg = os_stat_getters; sg->name != NULL; sg++) {
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if (janet_cstrcmp(key, sg->name)) continue;
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return sg->fn(&st);
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}
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janet_panicf("unexpected keyword %v", janet_wrap_keyword(key));
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return janet_wrap_nil();
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}
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}
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static Janet os_dir(int32_t argc, Janet *argv) {
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@ -555,8 +606,22 @@ static const JanetReg os_cfuns[] = {
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},
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{
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"os/stat", os_stat,
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JDOC("(os/stat path [, tab])\n\n"
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"Gets information about a file or directory. Returns a table.")
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JDOC("(os/stat path [, tab|key])\n\n"
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"Gets information about a file or directory. Returns a table If the third argument is a keyword, returns "
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" only that information from stat. The keys are\n\n"
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"\t:dev - the device that the file is on\n"
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"\t:mode - the type of file, one of :file, :directory, :block, :character, :fifo, :socket, :link, or :other\n"
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"\t:permissions - A unix permission string like \"rwx--x--x\"\n"
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"\t:uid - File uid\n"
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"\t:gid - File gid\n"
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"\t:nlink - number of links to file\n"
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"\t:rdev - Real device of file. 0 on windows.\n"
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"\t:size - size of file in bytes\n"
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"\t:blocks - number of blocks in file. 0 on windows\n"
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"\t:blocksize - size of blocks in file. 0 on windows\n"
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"\t:accessed - timestamp when file last accessed\n"
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"\t:changed - timestamp when file last chnaged (permissions changed)\n"
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"\t:modified - timestamp when file last modified (content changed)\n")
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},
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{
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"os/touch", os_touch,
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@ -18,11 +18,13 @@
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(os/exit res)))
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(defn- rm
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"Remove a directory. Not safe for user code."
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"Remove a directory and all sub directories."
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[path]
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(if is-win
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(shell "rmdir " path " /s")
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(shell "rm -rf " path)))
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(if (= ((os/stat path) :mode) :directory)
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(do
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(each subpath (os/dir path) (rm subpath))
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(os/rmdir path))
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(os/rm path)))
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(defn- needs-build
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[dest src]
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@ -74,7 +74,7 @@
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"Generate title"
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[]
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(string "<h1>Janet Core API</h1>"
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"<p>Version " janet/version "-" janet/build "</p>"
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"<p>Version " janet/version "-" janet/build "</p>"
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"<p>Generated "
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(nice-date)
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"</p>"
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