move string32.c into util.c

1 files changed, 0 insertions, 193 deletions

diff --git a/string32.c b/string32.c
deleted file mode 100644
index 1b4f1ac..0000000
--- a/string32.c
+++ /dev/null
@@ -1,193 +0,0 @@
-// UTF-32 string
-typedef struct {
-	char32_t *str;
-	size_t len;
-} String32;
-
-String32 str32(char32_t *str, size_t len) {
-	String32 s = {str, len};
-	return s;
-}
-
-String32 str32_substr(String32 s, size_t from, size_t len) {
-	return str32(s.str + from, len);
-}
-
-// frees string and sets it to ""
-void str32_free(String32 *s) {
-	free(s->str);
-	s->str = NULL;
-	s->len = 0;
-}
-
-// the string returned should be str32_free'd.
-// this will return an empty string if the allocation failed or the string is invalid UTF-8
-String32 str32_from_utf8(char const *utf8) {
-	String32 string = {NULL, 0};
-	size_t len = strlen(utf8);
-	if (len) {
-		// the wide string uses at most as many "characters" (elements?) as the UTF-8 string
-		char32_t *widestr = calloc(len, sizeof *widestr);
-		if (widestr) {
-			char32_t *wide_p = widestr;
-			char const *utf8_p = utf8;
-			char const *utf8_end = utf8_p + len;
-			while (utf8_p < utf8_end) {
-				char32_t c = 0;
-				size_t n = unicode_utf8_to_utf32(&c, utf8_p, (size_t)(utf8_end - utf8_p));
-				if (n == 0 // null character. this shouldn't happen.
-					|| n >= (size_t)(-2) // invalid UTF-8
-					) {
-					free(widestr);
-					widestr = wide_p = NULL;
-					break;
-				} else {
-					// n bytes consumed
-					*wide_p++ = c;
-					utf8_p += n;
-				}
-			}
-			string.str = widestr;
-			string.len = (size_t)(wide_p - widestr);
-		}
-	}
-	return string;
-}
-
-// returns a null-terminated UTF-8 string
-// the string returned should be free'd
-// this will return NULL on failure
-static char *str32_to_utf8_cstr(String32 s) {
-	char *utf8 = calloc(4 * s.len + 1, 1); // each codepoint takes up at most 4 bytes in UTF-8, + we need a terminating null byte
-	if (utf8) {
-		char *p = utf8;
-		for (size_t i = 0; i < s.len; ++i) {
-			size_t bytes = unicode_utf32_to_utf8(p, s.str[i]);
-			if (bytes == (size_t)-1) {
-				// invalid UTF-32 code point
-				free(utf8);
-				return NULL;
-			} else {
-				p += bytes;
-			}
-		}
-		*p = '\0';
-	}
-	return utf8;
-}
-
-// compare s to the ASCII string `ascii`
-static int str32_cmp_ascii(String32 s, char const *ascii) {
-	for (size_t i = 0; i < s.len; ++i) {
-		assert((char32_t)ascii[i] < 128);
-		if ((char32_t)ascii[i] == '\0')
-			return -1; // ascii is a prefix of s
-		if (s.str[i] > (char32_t)ascii[i])
-			return +1;
-		if (s.str[i] < (char32_t)ascii[i])
-			return -1;
-	}
-	if (ascii[s.len]) {
-		// s is a prefix of ascii
-		return +1;
-	}
-	return 0;
-}
-
-// check if s starts with the ASCII string `ascii`
-static int str32_has_ascii_prefix(String32 s, char const *ascii) {
-	for (size_t i = 0; i < s.len; ++i) {
-		assert((char32_t)ascii[i] < 128);
-		if ((char32_t)ascii[i] == '\0')
-			return true; // ascii is a prefix of s
-		if (s.str[i] > (char32_t)ascii[i])
-			return false;
-		if (s.str[i] < (char32_t)ascii[i])
-			return false;
-	}
-	if (ascii[s.len]) {
-		// s is a prefix of ascii
-		return false;
-	}
-	// s is the same as ascii
-	return true;
-}
-
-// returns the index of the given character in the string, or the length of the string if it's not found.
-size_t str32chr(String32 s, char32_t c) {
-	for (size_t i = 0; i < s.len; ++i) {
-		if (s.str[i] == c)
-			return i;
-	}
-	return s.len;
-}
-
-// returns number of instances of c in s
-size_t str32_count_char(String32 s, char32_t c) {
-	size_t total = 0;
-	for (size_t i = 0; i < s.len; ++i) {
-		total += s.str[i] == c;
-	}
-	return total;
-}
-
-// returns number of characters deleted from s
-size_t str32_remove_all_instances_of_char(String32 *s, char32_t c) {
-	char32_t *str = s->str;
-	size_t ndeleted = 0;
-	size_t len = s->len;
-	size_t out = 0;
-	for (size_t in = 0; in < len; ++in) {
-		if (str[in] == c) {
-			++ndeleted;
-		} else {
-			str[out++] = str[in];
-		}
-	}
-	s->len = out;
-	return ndeleted;
-}
-
-// returns the length of the longest prefix of `s` containing only
-// ASCII characters in the C-string `charset`.
-size_t str32_ascii_spn(String32 s, char const *charset) {
-	for (u32 i = 0; i < s.len; ++i) {
-		if (s.str[i] >= 128)
-			return i; // non-ASCII character in s, so that can't be in charset.
-		bool found = false;
-		for (char const *p = charset; *p; ++p) {
-			assert((char32_t)*p < 128);
-			if ((char32_t)*p == s.str[i]) {
-				found = true;
-				break;
-			}
-		}
-		if (!found) return i;
-	}
-	return s.len;
-}
-
-bool is32_space(char32_t c) {
-	return c <= WINT_MAX && iswspace((wint_t)c);
-}
-
-bool is32_alpha(char32_t c) {
-	return c <= WINT_MAX && iswalpha((wint_t)c);
-}
-
-bool is32_alnum(char32_t c) {
-	return c <= WINT_MAX && iswalnum((wint_t)c);
-}
-
-bool is32_digit(char32_t c) {
-	return c <= WINT_MAX && iswdigit((wint_t)c);
-}
-
-bool is32_graph(char32_t c) {
-	return c <= WINT_MAX && iswgraph((wint_t)c);
-}
-
-// could this character appear in a C-style identifier?
-bool is32_ident(char32_t c) {
-	return c <= WINT_MAX && (iswalnum((wint_t)c) || c == '_');
-}