Implement window handling

Also implement searching.

fix undo boundaries

when it checked for other save point, it used && instead of == which
caused it to overwrite other types.

Fix bytes vs chars bug in text_get_region

1 files changed, 0 insertions, 67 deletions

diff --git a/src/utf8.c b/src/utf8.c
deleted file mode 100644
index abf5ef7..0000000
--- a/src/utf8.c
+++ /dev/null
@@ -1,67 +0,0 @@
-#include "utf8.h"
-
-#include <stdio.h>
-
-bool utf8_byte_is_unicode_start(uint8_t byte) { return (byte & 0xc0) == 0xc0; }
-bool utf8_byte_is_unicode_continuation(uint8_t byte) {
-  return utf8_byte_is_unicode(byte) && !utf8_byte_is_unicode_start(byte);
-}
-bool utf8_byte_is_unicode(uint8_t byte) { return (byte & 0x80) != 0x0; }
-bool utf8_byte_is_ascii(uint8_t byte) { return !utf8_byte_is_unicode(byte); }
-
-uint32_t utf8_nbytes_in_char(uint8_t byte) {
-  // length of char is the number of leading ones
-  // flip it and count number of leading zeros
-  uint8_t invb = ~byte;
-  return __builtin_clz((uint32_t)invb) - 24;
-}
-
-// TODO: grapheme clusters, this returns the number of unicode code points
-uint32_t utf8_nchars(uint8_t *bytes, uint32_t nbytes) {
-  uint32_t nchars = 0;
-  uint32_t expected = 0;
-  for (uint32_t bi = 0; bi < nbytes; ++bi) {
-    uint8_t byte = bytes[bi];
-    if (utf8_byte_is_unicode(byte)) {
-      if (utf8_byte_is_unicode_start(byte)) {
-        expected = utf8_nbytes_in_char(byte) - 1;
-      } else { // continuation byte
-        --expected;
-        if (expected == 0) {
-          ++nchars;
-        }
-      }
-    } else { // ascii
-      ++nchars;
-    }
-  }
-  return nchars;
-}
-
-// TODO: grapheme clusters, this uses the number of unicode code points
-uint32_t utf8_nbytes(uint8_t *bytes, uint32_t nbytes, uint32_t nchars) {
-
-  uint32_t bi = 0;
-  uint32_t chars = 0;
-  uint32_t expected = 0;
-
-  while (chars < nchars && bi < nbytes) {
-    uint8_t byte = bytes[bi];
-    if (utf8_byte_is_unicode(byte)) {
-      if (utf8_byte_is_unicode_start(byte)) {
-        expected = utf8_nbytes_in_char(byte) - 1;
-      } else { // continuation char
-        --expected;
-        if (expected == 0) {
-          ++chars;
-        }
-      }
-    } else { // ascii
-      ++chars;
-    }
-
-    ++bi;
-  }
-
-  return bi;
-}