From: Michael D. Lowis <mike@mdlowis.com>
Date: Fri, 6 Jan 2017 02:26:46 +0000 (-0500)
Subject: Shift key inverts the search direction for literal searches
X-Git-Url: https://git.mdlowis.com/?a=commitdiff_plain;h=6e9be6c9daa79e7a980aba275f0da63f6ab37ee2;p=projs%2Ftide.git

Shift key inverts the search direction for literal searches
---

diff --git a/TODO.md b/TODO.md
index f7769fa..a07c6c4 100644
--- a/TODO.md
+++ b/TODO.md
@@ -7,7 +7,6 @@ Up Next:
 * block selection should handle brace-balancing
 * context sensitive selection of words, commands, line numbers, or filenames.
 * ctrl+alt+f should find next occurence of previous search term
-* shift should change direction of search for ctrl+f and right mouse button
 * check for file changes on save
 * check for file changes when window regains focus
 
diff --git a/inc/edit.h b/inc/edit.h
index 6fd6517..bd0aa6a 100644
--- a/inc/edit.h
+++ b/inc/edit.h
@@ -83,8 +83,8 @@ unsigned buf_byrune(Buf* buf, unsigned pos, int count);
 unsigned buf_byword(Buf* buf, unsigned pos, int count);
 unsigned buf_byline(Buf* buf, unsigned pos, int count);
 
-void buf_find(Buf* buf, size_t* beg, size_t* end);
-void buf_findstr(Buf* buf, char* str, size_t* beg, size_t* end);
+void buf_find(Buf* buf, int dir, size_t* beg, size_t* end);
+void buf_findstr(Buf* buf, int dir, char* str, size_t* beg, size_t* end);
 
 unsigned buf_setln(Buf* buf, unsigned line);
 unsigned buf_getcol(Buf* buf, unsigned pos);
@@ -149,8 +149,8 @@ void view_byword(View* view, int move, bool extsel);
 void view_byline(View* view, int move, bool extsel);
 
 char* view_fetch(View* view, size_t row, size_t col);
-void view_find(View* view, size_t row, size_t col);
-void view_findstr(View* view, char* str);
+void view_find(View* view, int dir, size_t row, size_t col);
+void view_findstr(View* view, int dir, char* str);
 void view_insert(View* view, bool indent, Rune rune);
 void view_delete(View* view, int dir, bool byword);
 void view_bol(View* view, bool extsel);
diff --git a/lib/buf.c b/lib/buf.c
index 92c5440..e0b1bfe 100644
--- a/lib/buf.c
+++ b/lib/buf.c
@@ -426,31 +426,32 @@ unsigned buf_byline(Buf* buf, unsigned pos, int count) {
 
 /*****************************************************************************/
 
-void buf_find(Buf* buf, size_t* beg, size_t* end) {
+int dir = +1;
+
+void buf_find(Buf* buf, int dir, size_t* beg, size_t* end) {
     unsigned dbeg = *beg, dend = *end;
-    unsigned mbeg = dbeg+1, mend = dend+1;
+    unsigned mbeg = dbeg+dir, mend = dend+dir;
+    unsigned mlen = dend - dbeg;
     while (true) {
         if ((buf_get(buf, mbeg)   == buf_get(buf, dbeg)) &&
             (buf_get(buf, mend-1) == buf_get(buf, dend-1)) &&
-            (0 == range_match(buf,dbeg,dend,mbeg,mend)))
+            (0 == range_match(buf, dbeg, dend, mbeg, mend)))
         {
             *beg = mbeg;
             *end = mend;
             break;
         }
-        mbeg++, mend++;
-        if (mend > buf_end(buf)) {
-            unsigned n = mend-mbeg;
-            mbeg = 0, mend = n;
-        }
+        mbeg += dir, mend += dir;
+        if (mend > buf_end(buf))
+            mbeg = (dir < 0 ? buf_end(buf)-mlen : 0), mend = mbeg+mlen;
     }
 }
 
-void buf_findstr(Buf* buf, char* str, size_t* beg, size_t* end) {
+void buf_findstr(Buf* buf, int dir, char* str, size_t* beg, size_t* end) {
     if (!str) return;
     Rune* runes = charstorunes(str);
     size_t rlen = rstrlen(runes);
-    unsigned start = *beg, mbeg = start+1, mend = mbeg + rlen;
+    unsigned start = *beg, mbeg = start+dir, mend = mbeg + rlen;
     while (mbeg != start) {
         if ((buf_get(buf, mbeg) == runes[0]) &&
             (buf_get(buf, mend-1) == runes[rlen-1]) &&
@@ -460,9 +461,9 @@ void buf_findstr(Buf* buf, char* str, size_t* beg, size_t* end) {
             *end = mend;
             break;
         }
-        mbeg++, mend++;
+        mbeg += dir, mend += dir;
         if (mend > buf_end(buf))
-            mbeg = 0, mend = rlen;
+            mbeg = (dir < 0 ? buf_end(buf)-rlen : 0), mend = mbeg+rlen;
     }
     free(runes);
 }
diff --git a/lib/view.c b/lib/view.c
index 3740a41..bd1e029 100644
--- a/lib/view.c
+++ b/lib/view.c
@@ -384,7 +384,7 @@ char* view_fetch(View* view, size_t row, size_t col) {
     return str;
 }
 
-void view_find(View* view, size_t row, size_t col) {
+void view_find(View* view, int dir, size_t row, size_t col) {
     size_t off = getoffset(view, row, col);
     if (off != SIZE_MAX) {
         Sel sel = view->selection;
@@ -392,10 +392,10 @@ void view_find(View* view, size_t row, size_t col) {
             view_setcursor(view, row, col);
             sel = view->selection;
             selcontext(view, &sel);
-            buf_find(&(view->buffer), &sel.beg, &sel.end);
+            buf_find(&(view->buffer), dir, &sel.beg, &sel.end);
             sel.end++;
         } else {
-            buf_find(&(view->buffer), &sel.beg, &sel.end);
+            buf_find(&(view->buffer), dir, &sel.beg, &sel.end);
         }
         view->selection = sel;
         view->sync_needed = true;
@@ -403,9 +403,9 @@ void view_find(View* view, size_t row, size_t col) {
     }
 }
 
-void view_findstr(View* view, char* str) {
+void view_findstr(View* view, int dir, char* str) {
     Sel sel = view->selection;
-    buf_findstr(&(view->buffer), str, &sel.beg, &sel.end);
+    buf_findstr(&(view->buffer), dir, str, &sel.beg, &sel.end);
     view->selection = sel;
     view->sync_needed = true;
     view->sync_center   = true;
diff --git a/xedit.c b/xedit.c
index 3b0425a..0f3d040 100644
--- a/xedit.c
+++ b/xedit.c
@@ -92,6 +92,7 @@ static Sel* currsel(void);
 
 /* Global Data
  *****************************************************************************/
+static int SearchDir = DOWN;
 static enum RegionId Focused = EDIT;
 static Region Regions[NREGIONS] = { 0 };
 static ButtonState MouseBtns[MOUSE_BTN_COUNT] = { 0 };
@@ -163,16 +164,17 @@ static KeyBinding Bindings[] = {
     { ModAny,  KEY_BACKSPACE, backspace },
 
     /* Implementation Specific */
-    { ModNone, KEY_ESCAPE, select_prev  },
-    { ModCtrl, KEY_ESCAPE, debug_dump   },
-    { ModCtrl, 't',        change_focus },
-    { ModCtrl, 'q',        quit         },
-    { ModCtrl, 'f',        search       },
-    { ModCtrl, 'd',        execute      },
-    { ModCtrl, 'o',        open_file    },
-    { ModCtrl, 'p',        pick_ctag    },
-    { ModCtrl, 'g',        goto_ctag    },
-    { ModCtrl, 'n',        new_win      },
+    { ModNone,          KEY_ESCAPE, select_prev  },
+    { ModCtrl,          KEY_ESCAPE, debug_dump   },
+    { ModCtrl,          't',        change_focus },
+    { ModCtrl,          'q',        quit         },
+    { ModCtrl,          'f',        search       },
+    { ModCtrl|ModShift, 'f',        search       },
+    { ModCtrl,          'd',        execute      },
+    { ModCtrl,          'o',        open_file    },
+    { ModCtrl,          'p',        pick_ctag    },
+    { ModCtrl,          'g',        goto_ctag    },
+    { ModCtrl,          'n',        new_win      },
 };
 
 /* External Commands
@@ -540,8 +542,9 @@ static void paste(void) {
 }
 
 static void search(void) {
+    SearchDir *= (x11_keymodsset(ModShift) ? -1 : +1);
     char* str = view_getctx(currview());
-    view_findstr(getview(EDIT), str);
+    view_findstr(getview(EDIT), SearchDir, str);
     free(str);
     Regions[EDIT].warp_ptr = true;
 }
@@ -553,7 +556,8 @@ static void execute(void) {
 }
 
 static void find(char* arg) {
-    view_findstr(getview(EDIT), arg);
+    SearchDir *= (x11_keymodsset(ModShift) ? -1 : +1);
+    view_findstr(getview(EDIT), SearchDir, arg);
 }
 
 static void open_file(void) {
@@ -781,7 +785,8 @@ static void mouse_right(enum RegionId id, size_t count, size_t row, size_t col)
     if (MouseBtns[MOUSE_BTN_LEFT].pressed) {
         paste();
     } else {
-        view_find(getview(id), row, col);
+        SearchDir *= (x11_keymodsset(ModShift) ? -1 : +1);
+        view_find(getview(id), SearchDir, row, col);
         Regions[id].warp_ptr = true;
     }
 }