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Add a dedicated function to convert a line into a string and use it to simplify the search window function.

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This commit is contained in:
Nicholas Marriott
2009-06-25 16:02:37 +00:00
parent e6e1b45fa1
commit 853ad68162
4 changed files with 79 additions and 40 deletions
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48
grid.c
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@ -1,4 +1,4 @@
/* $Id: grid.c,v 1.16 2009-05-04 17:58:26 nicm Exp $ */
/* $OpenBSD: grid.c,v 1.3 2009/06/24 22:04:18 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@ -494,4 +494,50 @@ grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx)
}
}
/* Convert cells into a string. */
char *
grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
{
const struct grid_cell *gc;
const struct grid_utf8 *gu;
char *buf;
size_t len, off;
u_int xx;
GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
len = 128;
buf = xmalloc(len);
off = 0;
for (xx = px; xx < px + nx; xx++) {
gc = grid_peek_cell(gd, xx, py);
if (gc->flags & GRID_FLAG_PADDING)
continue;
if (gc->flags & GRID_FLAG_UTF8) {
while (len < off + UTF8_SIZE + 1) {
buf = xrealloc(buf, 2, len);
len *= 2;
}
gu = grid_peek_utf8(gd, xx, py);
memcpy(buf + off, gu->data, UTF8_SIZE);
off += UTF8_SIZE;
while (off > 0 && ((u_char) buf[off]) == 0xff)
off--;
} else {
while (len < off + 2) {
buf = xrealloc(buf, 2, len);
len *= 2;
}
buf[off++] = gc->data;
}
}
buf[off] = '\0';
return (buf);
}