Integrate clear screen detection into isaltscreen - scroll - scrollbackbuffer program for st
(HTM) git clone git://git.suckless.org/scroll
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---
(DIR) commit 63f16494898a219a41fe5538a86af21b827bdb11
(DIR) parent 54ac69d9a563d71dc9fba77c1b231e015842908a
(HTM) Author: Jochen Sprickerhof <git@jochen.sprickerhof.de>
Date: Tue, 14 Apr 2020 23:32:48 +0200
Integrate clear screen detection into isaltscreen
Diffstat:
M scroll.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
---
(DIR) diff --git a/scroll.c b/scroll.c
@@ -197,9 +197,9 @@ strelen(const char *buf, size_t size)
return len;
}
-/* detect alternative screen switching */
+/* detect alternative screen switching and clear screen */
bool
-isaltscreen(char c)
+scipesc(char c)
{
static enum {CHAR, BREK, ESC} state = CHAR;
static char buf[BUFSIZ];
@@ -238,6 +238,10 @@ isaltscreen(char c)
strcmp(buf, "?1047l") == 0 ||
strcmp(buf, "?47l" ) == 0)
altscreen = false;
+
+ /* don't save clear screen esc sequences in log */
+ if (strcmp(buf, "H\033[2J") == 0)
+ return true;
}
break;
}
@@ -518,15 +522,11 @@ main(int argc, char *argv[])
if (write(STDOUT_FILENO, input, n) == -1)
die("write:");
- /* don't save clear screen esc sequences in log */
- /* TODO: may need to check if it wasn't read in one string */
- if (strcmp("\033[H\033[2J", input) == 0)
- continue;
-
/* iterate over the input buffer */
for (char *c = input; n-- > 0; c++) {
- /* don't save lines from alternative screen */
- if (isaltscreen(*c))
+ /* don't save alternative screen and */
+ /* clear screen esc sequences to scrollback */
+ if (scipesc(*c))
continue;
if (*c == '\n') {