From: Michael D. Lowis <mike@mdlowis.com>
Date: Tue, 3 Apr 2018 01:26:36 +0000 (-0400)
Subject: reworked buf_setcol interface
X-Git-Url: https://git.mdlowis.com/?a=commitdiff_plain;h=2bd04f57e5e8e5f89c12698227735ed7cdf01eb2;p=projs%2Ftide.git

reworked buf_setcol interface
---

diff --git a/inc/edit.h b/inc/edit.h
index 4d947d2..313e25b 100644
--- a/inc/edit.h
+++ b/inc/edit.h
@@ -85,7 +85,7 @@ void buf_findstr(Buf* buf, int dir, char* str, size_t* beg, size_t* end);
 size_t buf_setln(Buf* buf, size_t line);
 size_t buf_getln(Buf* buf, size_t off);
 void buf_getcol(Buf* buf, Sel* p_sel);
-size_t buf_setcol(Buf* buf, size_t pos, size_t col);
+void buf_setcol(Buf* buf, Sel* p_sel);
 
 /* Screen management functions
  *****************************************************************************/
diff --git a/lib/buf.c b/lib/buf.c
index d00e391..37206a0 100644
--- a/lib/buf.c
+++ b/lib/buf.c
@@ -436,22 +436,20 @@ void buf_getcol(Buf* buf, Sel* sel) {
         sel->col += runewidth(sel->col, buf_getrat(buf, curr));
 }
 
-size_t buf_setcol(Buf* buf, size_t pos, size_t col) {
-    size_t bol = buf_bol(buf, pos);
+void buf_setcol(Buf* buf, Sel* sel) {
+    size_t bol = buf_bol(buf, sel->end);
     size_t curr = bol, len = 0, i = 0;
     /* determine the length of the line in columns */
     for (; !buf_iseol(buf, curr); curr++)
         len += runewidth(len, buf_getrat(buf, curr));
     /* iterate over the runes until we reach the target column */
-    curr = bol, i = 0;
-    while (i < col && i < len) {
-        int width = runewidth(i, buf_getrat(buf, curr));
-        curr = buf_byrune(buf, curr, 1);
-        if (col >= i && col < (i+width))
+    for (sel->end = bol, i = 0; i < sel->col && i < len;) {
+        int width = runewidth(i, buf_getrat(buf, sel->end));
+        sel->end = buf_byrune(buf, sel->end, 1);
+        if (sel->col >= i && sel->col < (i + width))
             break;
         i += width;
     }
-    return curr;
 }
 
 static int rune_match(Buf* buf, size_t mbeg, size_t mend, Rune* runes) {
diff --git a/lib/view.c b/lib/view.c
index 40a8ba3..53c367a 100644
--- a/lib/view.c
+++ b/lib/view.c
@@ -330,7 +330,7 @@ static void move_selection(View* view, bool extsel, Sel* sel, int move, movefn_t
     } else {
         sel->end = bything(&(view->buffer), sel->end, move);
         if (bything == buf_byline)
-            sel->end = buf_setcol(&(view->buffer), sel->end, sel->col);
+            buf_setcol(&(view->buffer), &(view->selection));
         if (!extsel) sel->beg = sel->end;
     }
     /* only update column if not moving vertically */