dwmblocks

commit 5fb7fcd7e1d89a5fad0d5e5144c1eff43d910a4b
parent a933ce0d6109524b393feb3e7156cbf0de88b42c
Author: Mehmet Ümit Özden <ozdenmehmetumit@gmail.com>
Date:   Sat, 25 Feb 2023 01:04:53 +0300

fixed disappearing block issue when signaling

Diffstat:
M
dwmblocks.c
 | 
29
+++++++++++++++--------------

1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/dwmblocks.c b/dwmblocks.c
@@ -58,25 +58,26 @@ static int returnStatus = 0;
 //opens process *cmd and stores output in *output
 void getcmd(const Block *block, char *output)
 {
-	strcpy(output, block->icon);
+	//make sure status is same until output is ready
+	char tempstatus[CMDLENGTH] = {0};
+	strcpy(tempstatus, block->icon);
 	FILE *cmdf = popen(block->command, "r");
 	if (!cmdf)
 		return;
 	int i = strlen(block->icon);
-	fgets(output+i, CMDLENGTH-i-delimLen, cmdf);
-	i = strlen(output);
-	if (i == 0) {
-		//return if block and command output are both empty
-		pclose(cmdf);
-		return;
-	}
-	//only chop off newline if one is present at the end
-	i = output[i-1] == '\n' ? i-1 : i;
-	if (delim[0] != '\0') {
-		strncpy(output+i, delim, delimLen); 
+	fgets(tempstatus+i, CMDLENGTH-i-delimLen, cmdf);
+	i = strlen(tempstatus);
+	//if block and command output are both not empty
+	if (i != 0) {
+		//only chop off newline if one is present at the end
+		i = tempstatus[i-1] == '\n' ? i-1 : i;
+		if (delim[0] != '\0') {
+			strncpy(tempstatus+i, delim, delimLen);
+		}
+		else
+			tempstatus[i++] = '\0';
 	}
-	else
-		output[i++] = '\0';
+	strcpy(output, tempstatus);
 	pclose(cmdf);
 }