From 888d4c640760477cb80924fe9f244dd4ab231ad8 Mon Sep 17 00:00:00 2001
From: "Michael D. Lowis" <mike@mdlowis.com>
Date: Sun, 29 Sep 2019 21:58:42 -0400
Subject: [PATCH] check-in partial refactor to new style

---
 src/lib/buf.c | 78 ++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 62 insertions(+), 16 deletions(-)

diff --git a/src/lib/buf.c b/src/lib/buf.c
index ce45ae8..98a84bb 100644
--- a/src/lib/buf.c
+++ b/src/lib/buf.c
@@ -9,7 +9,8 @@
 #include "config.h"
 
 #ifndef NDEBUG
-static bool buf_valid(Buf* buf) {
+static bool buf_valid(Buf* buf)
+{
     return (
            (buf->bufsize > 0)
         && (buf->bufstart != NULL)
@@ -26,31 +27,40 @@ static bool buf_valid(Buf* buf) {
 }
 #endif
 
-static Sel selswap(Sel sel) {
+static Sel selswap(Sel sel)
+{
     size_t off = sel.beg;
-    sel.beg = sel.end, sel.end = off;
+    sel.beg = sel.end;
+    sel.end = off;
     return sel;
 }
 
-static Sel selget(Buf* buf) {
+static Sel selget(Buf* buf)
+{
     Sel sel = buf->selection;
     return (sel.end < sel.beg ? selswap(sel) : sel);
 }
 
-//static void selset(Buf* buf, Sel sel) {
+//static void selset(Buf* buf, Sel sel)
+//{
 //    buf->selection = (sel.end < sel.beg ? selswap(sel) : sel);
 //}
 
 /* Creation, Resizing, Loading, and Saving
  ******************************************************************************/
-static size_t pagealign(size_t sz) {
-    size_t pgsize = sysconf(_SC_PAGE_SIZE), alignmask = pgsize - 1;
+static size_t pagealign(size_t sz)
+{
+    size_t pgsize = sysconf(_SC_PAGE_SIZE);
+    size_t alignmask = (pgsize - 1);
     if (sz & alignmask)
+    {
         sz += pgsize - (sz & alignmask);
+    }
     return sz;
 }
 
-static void buf_resize(Buf* buf, size_t sz) {
+static void buf_resize(Buf* buf, size_t sz)
+{
     /* allocate the new buffer and gap */
     Buf copy = *buf;
     copy.bufsize  = sz;
@@ -58,41 +68,68 @@ static void buf_resize(Buf* buf, size_t sz) {
     copy.bufend   = copy.bufstart + copy.bufsize;
     copy.gapstart = copy.bufstart;
     copy.gapend   = copy.bufend;
+
     /* copy the data from the old buffer to the new one */
     for (char* curr = buf->bufstart; curr < buf->gapstart; curr++)
+    {
         *(copy.gapstart++) = *(curr);
+    }
     for (char* curr = buf->gapend; curr < buf->bufend; curr++)
+    {
         *(copy.gapstart++) = *(curr);
+    }
+
     /* free the buffer and commit the changes */
     free(buf->bufstart);
     memcpy(buf, &copy, sizeof(Buf));
 }
 
-static void buf_syncgap(Buf* buf, size_t off) {
+static void buf_syncgap(Buf* buf, size_t off)
+{
     assert(off <= buf_end(buf));
     /* If the buffer is full, resize it before syncing */
     if (0 == (buf->gapend - buf->gapstart))
+    {
         buf_resize(buf, buf->bufsize << 1);
+    }
+
     /* Move the gap to the desired offset */
     char* newpos = (buf->bufstart + off);
     if (newpos < buf->gapstart)
+    {
         while (newpos < buf->gapstart)
+        {
             *(--buf->gapend) = *(--buf->gapstart);
+        }
+    }
     else
+    {
         while (newpos > buf->gapstart)
+        {
             *(buf->gapstart++) = *(buf->gapend++);
+        }
+    }
 }
 
-static char getb(Buf* buf, size_t off) {
-    if (off >= buf_end(buf)) return '\n'; // TODO: get rid of this hack
+static char getb(Buf* buf, size_t off)
+{
+    if (off >= buf_end(buf))
+    {
+        return '\n'; // TODO: get rid of this hack
+    }
     size_t bsz = (buf->gapstart - buf->bufstart);
     if (off < bsz)
+    {
         return *(buf->bufstart + off);
+    }
     else
+    {
         return *(buf->gapend + (off - bsz));
+    }
 }
 
-static void putb(Buf* buf, char b, Sel* p_sel) {
+static void putb(Buf* buf, char b, Sel* p_sel)
+{
     buf_syncgap(buf, p_sel->end);
     *(buf->gapstart++) = b;
     p_sel->end = p_sel->end + 1u;
@@ -100,12 +137,19 @@ static void putb(Buf* buf, char b, Sel* p_sel) {
     buf->status = MODIFIED;
 }
 
-static void putch(Buf* buf, char b, Sel* p_sel) {
-    if (b == '\r') return;
-    if (b == '\n' && DosLineFeed) {
+static void putch(Buf* buf, char b, Sel* p_sel)
+{
+    if (b == '\r')
+    {
+        return;
+    }
+    if (b == '\n' && DosLineFeed)
+    {
         putb(buf, '\r', p_sel);
         putb(buf, '\n', p_sel);
-    } else {
+    }
+    else
+    {
         putb(buf, b, p_sel);
     }
 }
@@ -751,6 +795,7 @@ void buf_selln(Buf* buf) {
 }
 
 void buf_selclr(Buf* buf, int dir) {
+    require(buf != NULL);
     Sel sel = selget(buf);
     if (dir > 0)
         sel.beg = sel.end;
@@ -760,6 +805,7 @@ void buf_selclr(Buf* buf, int dir) {
 }
 
 bool buf_insel(Buf* buf, size_t off) {
+    require(buf != NULL);
     return (off >= buf_selbeg(buf) && off < buf_selend(buf));
 }
 
-- 
2.52.0