module utf8
intrude import standard::string
+intrude import standard::file
in "C Header" `{
# UTF-8 char as defined in RFC-3629, e.g. 1-4 Bytes
#
# A UTF-8 char has its bytes stored in a NativeString (char*)
-extern class UnicodeChar `{ UTF8Char* `}
+extern class UTF8Char `{ UTF8Char* `}
new(pos: Int, ns: NativeString) `{
UTF8Char* u = malloc(sizeof(UTF8Char));
#
# As per the specification :
#
+ # ~~~raw
# Length | UTF-8 octet sequence
# | (binary)
# ---------+-------------------------------------------------
# 2 | 110xxxxx 10xxxxxx
# 3 | 1110xxxx 10xxxxxx 10xxxxxx
# 4 | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+ # ~~~
private fun len: Int `{
char* ns = recv->ns;
int pos = recv->pos;
# Returns the Unicode code point representing the character
#
# Note : A unicode character might not be a visible glyph, but it will be used to determine canonical equivalence
- fun code_point: Int import UnicodeChar.len `{
- switch(UnicodeChar_len(recv)){
+ fun code_point: Int import UTF8Char.len `{
+ switch(UTF8Char_len(recv)){
case 1:
return (long)(0x7F & (unsigned char)recv->ns[recv->pos]);
case 2:
}
`}
+ # Returns an upper-case version of self
+ #
+ # NOTE : Works only on ASCII chars
+ # TODO : Support unicode for to_upper
+ fun to_upper: UTF8Char import UTF8Char.code_point `{
+ int cp = UTF8Char_code_point(recv);
+ if(cp < 97 || cp > 122){ return recv; }
+ char* ns = malloc(2);
+ ns[1] = '\0';
+ char c = recv->ns[recv->pos];
+ ns[0] = c - 32;
+ UTF8Char* ret = malloc(sizeof(UTF8Char));
+ ret->ns = ns;
+ ret->pos = 0;
+ return ret;
+ `}
+
+ # Returns an lower-case version of self
+ #
+ # NOTE : Works only on ASCII chars
+ # TODO : Support unicode for to_upper
+ fun to_lower: UTF8Char import UTF8Char.code_point `{
+ int cp = UTF8Char_code_point(recv);
+ if(cp < 65 || cp > 90){ return recv; }
+ char* ns = malloc(2);
+ ns[1] = '\0';
+ char c = recv->ns[recv->pos];
+ ns[0] = c + 32;
+ UTF8Char* ret = malloc(sizeof(UTF8Char));
+ ret->ns = ns;
+ ret->pos = 0;
+ return ret;
+ `}
+
redef fun ==(o)
do
if o isa Char then
if len != 1 then return false
if code_point == o.ascii then return true
- else if o isa UnicodeChar then
+ else if o isa UTF8Char then
if len != o.len then return false
if code_point == o.code_point then return true
end
return false
end
+ redef fun output import UTF8Char.code_point `{
+ switch(UTF8Char_len(recv)){
+ case 1:
+ printf("%c", recv->ns[recv->pos]);
+ break;
+ case 2:
+ printf("%c%c", recv->ns[recv->pos], recv->ns[recv->pos + 1]);
+ break;
+ case 3:
+ printf("%c%c%c", recv->ns[recv->pos], recv->ns[recv->pos + 1], recv->ns[recv->pos + 2]);
+ break;
+ case 4:
+ printf("%c%c%c%c", recv->ns[recv->pos], recv->ns[recv->pos + 1], recv->ns[recv->pos + 2], recv->ns[recv->pos + 3]);
+ break;
+ }
+ `}
+
redef fun to_s import NativeString.to_s_with_length `{
- int len = utf8___UnicodeChar_len___impl(recv);
+ int len = utf8___UTF8Char_len___impl(recv);
char* r = malloc(len + 1);
r[len] = '\0';
char* src = (recv->ns + recv->pos);
new(size: Int) `{ return malloc(size*sizeof(UTF8Char)); `}
# Sets the character at `index` as `item`
- fun []=(index: Int, item: UnicodeChar) `{ recv[index] = *item; `}
+ fun []=(index: Int, item: UTF8Char) `{ recv[index] = *item; `}
# Gets the character at position `id`
- fun [](id: Int): UnicodeChar `{ return &recv[id]; `}
+ fun [](id: Int): UTF8Char `{ return &recv[id]; `}
# Copies a part of self starting at index `my_from` of length `length` into `other`, starting at `its_from`
fun copy_to(other: StringIndex, my_from: Int, its_from: Int, length: Int)`{
self.bytelen = bytelen
end
+ redef fun to_cstring
+ do
+ if real_items != null then return real_items.as(not null)
+ var new_items = new NativeString(bytelen + 1)
+ self.items.copy_to(new_items, bytelen, index[index_from].pos, 0)
+ new_items[bytelen] = '\0'
+ self.real_items = new_items
+ return new_items
+ end
+
redef fun substring(from, count)
do
assert count >= 0
redef fun reversed
do
- var native = calloc_string(self.bytelen + 1)
+ var native = new NativeString(self.bytelen + 1)
var length = self.length
var index = self.index
var pos = 0
var uchar = index[i]
var uchar_len = uchar.len
ipos -= uchar_len
- new_index[pos_index] = new UnicodeChar(ipos, native)
+ new_index[pos_index] = new UTF8Char(ipos, native)
pos_index -= 1
items.copy_to(native, uchar_len, pos, ipos)
pos += uchar_len
var my_real_len = length
var my_real_fin_len = my_real_len * i
- var target_string = calloc_string((finlen) + 1)
+ var target_string = new NativeString((finlen) + 1)
var my_index = index
var new_index = new StringIndex(my_real_fin_len)
end
+ redef fun to_upper
+ do
+ var outstr = new NativeString(self.bytelen + 1)
+
+ var out_index = 0
+ var index = self.index
+ var ipos = 0
+ var max = length
+
+ while ipos < max do
+ var u = index[ipos].to_upper
+ u.ns.copy_to(outstr, u.len, u.pos, out_index)
+ out_index += u.len
+ ipos += 1
+ end
+
+ outstr[self.bytelen] = '\0'
+
+ return outstr.to_s_with_length(self.bytelen)
+ end
+
+ redef fun to_lower
+ do
+ var outstr = new NativeString(self.bytelen + 1)
+
+ var out_index = 0
+ var index = self.index
+ var ipos = 0
+ var max = length
+
+ while ipos < max do
+ var u = index[ipos].to_lower
+ u.ns.copy_to(outstr, u.len, u.pos, out_index)
+ out_index += u.len
+ ipos += 1
+ end
+
+ outstr[self.bytelen] = '\0'
+
+ return outstr.to_s_with_length(self.bytelen)
+ end
+
+ redef fun output
+ do
+ var i = self.index_from
+ var imax = self.index_to
+ while i <= imax do
+ index[i].output
+ i += 1
+ end
+ end
+
+end
+
+redef class FlatBuffer
+
+ # Fix for this particular implementation
+ #
+ # Since the to_s of a FlatBuffer now builds using
+ # the old String contructor, this breaks everything.
+ #
+ # This will disappear when UTF8 is fully-supported
+ redef fun to_s do
+ written = false
+ return to_cstring.to_s_with_length(length)
+ end
end
redef class NativeString
# Creates the index for said NativeString
# `length` is the size of the CString (in bytes, up to the first \0)
# real_len is just a way to store the length (UTF-8 characters)
- private fun make_index(length: Int, real_len: Container[Int]): StringIndex import Container[Int].item=, UnicodeChar.len `{
+ private fun make_index(length: Int, real_len: Container[Int]): StringIndex import Container[Int].item=, UTF8Char.len `{
int pos = 0;
int index_pos = 0;
UTF8Char* index = malloc(length*sizeof(UTF8Char));
UTF8Char* curr = &index[index_pos];
curr->pos = pos;
curr->ns = recv;
- pos += UnicodeChar_len(curr);
+ pos += UTF8Char_len(curr);
index_pos ++;
}
Container_of_Int_item__assign(real_len, index_pos);
var real_len = new Container[Int](0)
var length = cstring_length
var x = make_index(length, real_len)
- var new_self = calloc_string(length + 1)
+ var new_self = new NativeString(length + 1)
copy_to(new_self, length, 0, 0)
return new FlatString.with_infos_index(new_self, real_len.item, 0, real_len.item - 1, x, length)
end
end
+
+redef class FileWriter
+ redef fun write(s)
+ do
+ assert is_writable
+ if s isa FlatText then
+ if s isa FlatString then
+ write_native(s.to_cstring, s.bytelen)
+ else
+ write_native(s.to_cstring, s.length)
+ end
+ else for i in s.substrings do write_native(i.to_cstring, i.length)
+ end
+end
nitlanguage / nit.git / blobdiff