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	tvi: case switching commands - neatvi - [fork] simple vi-type editor with UTF-8…
	git clone git://src.adamsgaard.dk/neatvi
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	---
	commit 34c48c51241cd630685f387cef89b41cb4415d69
	parent 88ed01cab8edeb1c8eb4ea39bba066dac00f161c
	Author: Ali Gholami Rudi <[email protected]>
	Date: Fri, 29 May 2015 13:27:41 +0430

	vi: case switching commands

	Diffstat:
	M vi.c \| 53 +++++++++++++++++++++++++++++…

	1 file changed, 52 insertions(+), 1 deletion(-)
	---
	diff --git a/vi.c b/vi.c
	t@@ -603,6 +603,44 @@ static void vi_change(int r1, int o1, int r2, int o2, int…
	free(post);
	}

	+static void vi_case(int r1, int o1, int r2, int o2, int lnmode, int cmd)
	+{
	+ char pref, post;
	+ char region, s;
	+ region = lbuf_region(xb, r1, lnmode ? 0 : o1, r2, lnmode ? -1 : o2);
	+ s = region;
	+ while (*s) {
	+ int c = (unsigned char) s[0];
	+ if (c <= 0x7f) {
	+ if (cmd == 'u')
	+ s[0] = tolower(c);
	+ if (cmd == 'U')
	+ s[0] = toupper(c);
	+ if (cmd == '~')
	+ s[0] = islower(c) ? toupper(c) : tolower(c);
	+ }
	+ s = uc_next(s);
	+ }
	+ pref = lnmode ? uc_dup("") : uc_sub(lbuf_get(xb, r1), 0, o1);
	+ post = lnmode ? uc_dup("\n") : uc_sub(lbuf_get(xb, r2), o2, -1);
	+ lbuf_rm(xb, r1, r2 + 1);
	+ if (!lnmode) {
	+ struct sbuf *sb = sbuf_make();
	+ sbuf_str(sb, pref);
	+ sbuf_str(sb, region);
	+ sbuf_str(sb, post);
	+ lbuf_put(xb, r1, sbuf_buf(sb));
	+ sbuf_free(sb);
	+ } else {
	+ lbuf_put(xb, r1, region);
	+ }
	+ xrow = r2;
	+ xoff = lnmode ? lbuf_indents(xb, r2) : o2;
	+ free(region);
	+ free(pref);
	+ free(post);
	+}
	+
	static void vi_pipe(int r1, int r2)
	{
	char *text;
	t@@ -684,6 +722,8 @@ static int vc_motion(int cmd)
	vi_delete(r1, o1, r2, o2, lnmode);
	if (cmd == 'c')
	vi_change(r1, o1, r2, o2, lnmode);
	+ if (cmd == '~' \|\| cmd == 'u' \|\| cmd == 'U')
	+ vi_case(r1, o1, r2, o2, lnmode, cmd);
	if (cmd == '!')
	vi_pipe(r1, r2);
	if (cmd == '>' \|\| cmd == '<')
	t@@ -909,7 +949,7 @@ static void vi(void)
	xcol = vi_pcol;
	} else if (mv == 0) {
	int c = vi_read();
	- int z;
	+ int z, g;
	if (c <= 0)
	continue;
	switch (c) {
	t@@ -1016,6 +1056,12 @@ static void vi(void)
	}
	redraw = 1;
	break;
	+ case 'g':
	+ g = vi_read();
	+ if (g == '~' \|\| g == 'u' \|\| g == 'U')
	+ if (!vc_motion(g))
	+ redraw = 1;
	+ break;
	case 'x':
	vi_back(' ');
	if (!vc_motion('d'))
	t@@ -1055,6 +1101,11 @@ static void vi(void)
	if (!vc_motion('y'))
	redraw = 1;
	break;
	+ case '~':
	+ vi_back(' ');
	+ if (!vc_motion('~'))
	+ redraw = 1;
	+ break;
	default:
	continue;
	}