#include "frame.h"
#include "insdel.h"
#include "window.h"
+#include "chartab.h"
#include "line-number.h"
#include "systime.h"
return make_string_from_buffer (b, begv, zv - begv);
}
+/* It might make more sense to name this
+ `buffer-substring-no-extents', but this name is FSFmacs-compatible,
+ and what the function does is probably good enough for what the
+ user-code will typically want to use it for. */
+DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /*
+Return the text from BEG to END, as a string, without copying the extents.
+*/
+ (start, end, buffer))
+{
+ /* This function can GC */
+ Bufpos begv, zv;
+ struct buffer *b = decode_buffer (buffer, 1);
+
+ get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL);
+ return make_string_from_buffer_no_extents (b, begv, zv - begv);
+}
+
DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /*
Insert before point a substring of the contents of buffer BUFFER.
BUFFER may be a buffer or a buffer name.
return Qnil;
}
+/* #### Shouldn't this also accept a BUFFER argument, in the good old
+ XEmacs tradition? */
DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /*
-From START to END, translate characters according to TABLE.
-TABLE is a string; the Nth character in it is the mapping
-for the character with code N. Returns the number of characters changed.
+Translate characters from START to END according to TABLE.
+
+If TABLE is a string, the Nth character in it is the mapping for the
+character with code N.
+
+If TABLE is a vector, its Nth element is the mapping for character
+with code N. The values of elements may be characters, strings, or
+nil (nil meaning don't replace.)
+
+If TABLE is a char-table, its elements describe the mapping between
+characters and their replacements. The char-table should be of type
+`char' or `generic'.
+
+Returns the number of substitutions performed.
*/
(start, end, table))
{
/* This function can GC */
Bufpos pos, stop; /* Limits of the region. */
- REGISTER Emchar oc; /* Old character. */
- REGISTER Emchar nc; /* New character. */
- int cnt; /* Number of changes made. */
- Charcount size; /* Size of translate table. */
+ int cnt = 0; /* Number of changes made. */
int mc_count;
struct buffer *buf = current_buffer;
+ Emchar oc;
get_buffer_range_char (buf, start, end, &pos, &stop, 0);
- CHECK_STRING (table);
-
- size = XSTRING_CHAR_LENGTH (table);
-
- cnt = 0;
mc_count = begin_multiple_change (buf, pos, stop);
- for (; pos < stop; pos++)
+ if (STRINGP (table))
+ {
+ struct Lisp_String *stable = XSTRING (table);
+ Charcount size = string_char_length (stable);
+#ifdef MULE
+ /* Under Mule, string_char(n) is O(n), so for large tables or
+ large regions it makes sense to create an array of Emchars. */
+ if (size * (stop - pos) > 65536)
+ {
+ Emchar *etable = alloca_array (Emchar, size);
+ convert_bufbyte_string_into_emchar_string
+ (string_data (stable), string_length (stable), etable);
+ for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ {
+ if (oc < size)
+ {
+ Emchar nc = etable[oc];
+ if (nc != oc)
+ {
+ buffer_replace_char (buf, pos, nc, 0, 0);
+ ++cnt;
+ }
+ }
+ }
+ }
+ else
+#endif /* MULE */
+ {
+ for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ {
+ if (oc < size)
+ {
+ Emchar nc = string_char (stable, oc);
+ if (nc != oc)
+ {
+ buffer_replace_char (buf, pos, nc, 0, 0);
+ ++cnt;
+ }
+ }
+ }
+ }
+ }
+ else if (VECTORP (table))
+ {
+ Charcount size = XVECTOR_LENGTH (table);
+ Lisp_Object *vtable = XVECTOR_DATA (table);
+
+ for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
+ {
+ if (oc < size)
+ {
+ Lisp_Object replacement = vtable[oc];
+ retry:
+ if (CHAR_OR_CHAR_INTP (replacement))
+ {
+ Emchar nc = XCHAR_OR_CHAR_INT (replacement);
+ if (nc != oc)
+ {
+ buffer_replace_char (buf, pos, nc, 0, 0);
+ ++cnt;
+ }
+ }
+ else if (STRINGP (replacement))
+ {
+ Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
+ buffer_delete_range (buf, pos, pos + 1, 0);
+ buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
+ pos += incr, stop += incr;
+ ++cnt;
+ }
+ else if (!NILP (replacement))
+ {
+ replacement = wrong_type_argument (Qchar_or_string_p, replacement);
+ goto retry;
+ }
+ }
+ }
+ }
+ else if (CHAR_TABLEP (table)
+ && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC
+ || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR))
{
- oc = BUF_FETCH_CHAR (buf, pos);
- if (oc >= 0 && oc < size)
+ struct Lisp_Char_Table *ctable = XCHAR_TABLE (table);
+
+ for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++)
{
- nc = string_char (XSTRING (table), oc);
- if (nc != oc)
+ Lisp_Object replacement = get_char_table (oc, ctable);
+ retry2:
+ if (CHAR_OR_CHAR_INTP (replacement))
{
- buffer_replace_char (buf, pos, nc, 0, 0);
+ Emchar nc = XCHAR_OR_CHAR_INT (replacement);
+ if (nc != oc)
+ {
+ buffer_replace_char (buf, pos, nc, 0, 0);
+ ++cnt;
+ }
+ }
+ else if (STRINGP (replacement))
+ {
+ Charcount incr = XSTRING_CHAR_LENGTH (replacement) - 1;
+ buffer_delete_range (buf, pos, pos + 1, 0);
+ buffer_insert_lisp_string_1 (buf, pos, replacement, 0);
+ pos += incr, stop += incr;
++cnt;
}
+ else if (!NILP (replacement))
+ {
+ replacement = wrong_type_argument (Qchar_or_string_p, replacement);
+ goto retry2;
+ }
}
}
+ else
+ dead_wrong_type_argument (Qstringp, table);
end_multiple_change (buf, mc_count);
return make_int (cnt);
DEFSUBR (Fstring_to_char);
DEFSUBR (Fchar_to_string);
DEFSUBR (Fbuffer_substring);
+ DEFSUBR (Fbuffer_substring_no_properties);
DEFSUBR (Fpoint_marker);
DEFSUBR (Fmark_marker);
projects / chise / xemacs-chise.git.1 / blobdiff