Cleanup: pass the buffer length into txt_insert_buf

Also remove redundant NULL check.

source/blender/blenkernel/BKE_text.h

@@ -45,8 +45,8 @@ struct Text *BKE_text_load_ex(struct Main *bmain,
  * \note Text data-blocks have no user by default, only the 'real user' flag.
  */
 struct Text *BKE_text_load(struct Main *bmain, const char *file, const char *relpath);
-void BKE_text_clear(struct Text *text);
+void BKE_text_clear(struct Text *text) ATTR_NONNULL(1);
-void BKE_text_write(struct Text *text, const char *str);
+void BKE_text_write(struct Text *text, const char *str, int str_len) ATTR_NONNULL(1, 2);
 /**
  * \return codes:
  * -  0 if file on disk is the same or Text is in memory only.
@@ -93,7 +93,8 @@ void txt_sel_clear(struct Text *text);
 void txt_sel_line(struct Text *text);
 void txt_sel_set(struct Text *text, int startl, int startc, int endl, int endc);
 char *txt_sel_to_buf(struct Text *text, size_t *r_buf_strlen);
-void txt_insert_buf(struct Text *text, const char *in_buffer);
+void txt_insert_buf(struct Text *text, const char *in_buffer, int in_buffer_len)
+    ATTR_NONNULL(1, 2);
 void txt_split_curline(struct Text *text);
 void txt_backspace_char(struct Text *text);
 void txt_backspace_word(struct Text *text);

source/blender/blenkernel/intern/text.c

@@ -518,9 +518,9 @@ void BKE_text_clear(Text *text) /* called directly from rna */
   txt_make_dirty(text);
 }
 
-void BKE_text_write(Text *text, const char *str) /* called directly from rna */
+void BKE_text_write(Text *text, const char *str, int str_len) /* called directly from rna */
 {
-  txt_insert_buf(text, str);
+  txt_insert_buf(text, str, str_len);
   txt_move_eof(text, 0);
   txt_make_dirty(text);
 }
@@ -1536,33 +1536,30 @@ char *txt_sel_to_buf(Text *text, size_t *r_buf_strlen)
   return buf;
 }
 
-void txt_insert_buf(Text *text, const char *in_buffer)
+void txt_insert_buf(Text *text, const char *in_buffer, int in_buffer_len)
 {
-  int l = 0, len;
+  BLI_assert(in_buffer_len == strlen(in_buffer));
+
+  int l = 0;
   size_t i = 0, j;
   TextLine *add;
   char *buffer;
 
-  if (!in_buffer) {
-    return;
-  }
-
   txt_delete_sel(text);
 
-  len = strlen(in_buffer);
+  buffer = BLI_strdupn(in_buffer, in_buffer_len);
-  buffer = BLI_strdupn(in_buffer, len);
+  in_buffer_len += txt_extended_ascii_as_utf8(&buffer);
-  len += txt_extended_ascii_as_utf8(&buffer);
 
   /* Read the first line (or as close as possible */
   while (buffer[i] && buffer[i] != '\n') {
-    txt_add_raw_char(text, BLI_str_utf8_as_unicode_step(buffer, len, &i));
+    txt_add_raw_char(text, BLI_str_utf8_as_unicode_step(buffer, in_buffer_len, &i));
   }
 
   if (buffer[i] == '\n') {
     txt_split_curline(text);
     i++;
 
-    while (i < len) {
+    while (i < in_buffer_len) {
       l = 0;
 
       while (buffer[i] && buffer[i] != '\n') {
@@ -1576,8 +1573,8 @@ void txt_insert_buf(Text *text, const char *in_buffer)
         i++;
       }
       else {
-        for (j = i - l; j < i && j < len;) {
+        for (j = i - l; j < i && j < in_buffer_len;) {
-          txt_add_raw_char(text, BLI_str_utf8_as_unicode_step(buffer, len, &j));
+          txt_add_raw_char(text, BLI_str_utf8_as_unicode_step(buffer, in_buffer_len, &j));
         }
         break;
       }
@@ -1875,7 +1872,7 @@ static void txt_convert_tab_to_spaces(Text *text)
    * to multiples of TXT_TABSIZE)
    */
   const char *sb = &tab_to_spaces[text->curc % TXT_TABSIZE];
-  txt_insert_buf(text, sb);
+  txt_insert_buf(text, sb, strlen(sb));
 }
 
 static bool txt_add_char_intern(Text *text, unsigned int add, bool replace_tabs)

source/blender/editors/space_text/text_autocomplete.c

@@ -267,7 +267,8 @@ static void confirm_suggestion(Text *text)
   //  for (i = 0; i < skipleft; i++)
   //      txt_move_left(text, 0);
   BLI_assert(memcmp(sel->name, &line[i], over) == 0);
-  txt_insert_buf(text, sel->name + over);
+  const char *buf = sel->name + over;
+  txt_insert_buf(text, buf, strlen(buf));
 
   //  for (i = 0; i < skipleft; i++)
   //      txt_move_right(text, 0);

source/blender/editors/space_text/text_ops.c

@@ -921,7 +921,7 @@ static int text_paste_exec(bContext *C, wmOperator *op)
     buf = new_buf;
   }
 
-  txt_insert_buf(text, buf);
+  txt_insert_buf(text, buf, buf_len);
   text_update_edited(text);
 
   MEM_freeN(buf);
@@ -3587,7 +3587,7 @@ static int text_find_and_replace(bContext *C, wmOperator *op, short mode)
     if (found) {
       if (mode == TEXT_REPLACE) {
         ED_text_undo_push_init(C);
-        txt_insert_buf(text, st->replacestr);
+        txt_insert_buf(text, st->replacestr, strlen(st->replacestr));
         if (text->curl && text->curl->format) {
           MEM_freeN(text->curl->format);
           text->curl->format = NULL;
@@ -3671,7 +3671,7 @@ static int text_replace_all(bContext *C)
     ED_text_undo_push_init(C);
 
     do {
-      txt_insert_buf(text, st->replacestr);
+      txt_insert_buf(text, st->replacestr, strlen(st->replacestr));
       if (text->curl && text->curl->format) {
         MEM_freeN(text->curl->format);
         text->curl->format = NULL;

source/blender/makesrna/intern/rna_text_api.c

@@ -28,14 +28,14 @@ static void rna_Text_clear(Text *text)
 
 static void rna_Text_write(Text *text, const char *str)
 {
-  BKE_text_write(text, str);
+  BKE_text_write(text, str, strlen(str));
   WM_main_add_notifier(NC_TEXT | NA_EDITED, text);
 }
 
 static void rna_Text_from_string(Text *text, const char *str)
 {
   BKE_text_clear(text);
-  BKE_text_write(text, str);
+  BKE_text_write(text, str, strlen(str));
 }
 
 static void rna_Text_as_string(Text *text, int *r_result_len, const char **result)

source/blender/python/intern/bpy_rna_text.c

@@ -6,6 +6,8 @@
  * This file extends the text editor with C/Python API methods and attributes.
  */
 
+#define PY_SSIZE_T_CLEAN
+
 #include <Python.h>
 
 #include "DNA_text_types.h"
@@ -103,9 +105,16 @@ static PyObject *bpy_rna_region_from_string(PyObject *self, PyObject *args)
 
   /* Parse the region range. */
   const char *buf;
+  Py_ssize_t buf_len;
   TextRegion region;
-  if (!PyArg_ParseTuple(
+  if (!PyArg_ParseTuple(args,
-          args, "s|((ii)(ii))", &buf, &region.curl, &region.curc, &region.sell, &region.selc)) {
+                        "s#|((ii)(ii))",
+                        &buf,
+                        &buf_len,
+                        &region.curl,
+                        &region.curc,
+                        &region.sell,
+                        &region.selc)) {
     return NULL;
   }
 
@@ -114,7 +123,7 @@ static PyObject *bpy_rna_region_from_string(PyObject *self, PyObject *args)
   }
 
   /* Set the selected text. */
-  txt_insert_buf(text, buf);
+  txt_insert_buf(text, buf, buf_len);
   /* Update the text editor. */
   WM_main_add_notifier(NC_TEXT | NA_EDITED, text);