config

commit dbcfb771199229e829e23019e063f6a7688c19e5
parent a5b9807743773ea1c49292557efba7a714924691
Author: Jacob R. Edwards <jacob@jacobedwards.org>
Date:   Thu, 13 Apr 2023 13:29:53 -0700

Add firstline patch to slstatus

This adds a component to slstatus which reads the first line from
a file.

Diffstat:
A
local/src/src/forks/slstatus/patches/a-first_line.diff
 | 
68
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 68 insertions(+), 0 deletions(-)
diff --git a/local/src/src/forks/slstatus/patches/a-first_line.diff b/local/src/src/forks/slstatus/patches/a-first_line.diff
@@ -0,0 +1,68 @@
+Author: Jacob R. Edwards <jacob@jacobedwards.org>
+Date: 2023-04-07
+
+Add "first_line" component to slstatus. This component simply returns
+the first line of a named file, or NULL couldn't be retrieved for
+some reason.
+
+My purpose for this component is to put status messages into a file
+for slstatus to display.
+
+diff -Prup slstatus-orig/components/first_line.c slstatus/components/first_line.c
+--- slstatus-orig/components/first_line.c	Wed Dec 31 16:00:00 1969
++++ slstatus/components/first_line.c	Fri Apr  7 08:27:45 2023
+@@ -0,0 +1,22 @@
++/* See LICENSE file for copyright and license details. */
++
++#include <stdio.h>
++#include <string.h>
++
++#include "../util.h"
++
++const char *
++first_line(const char *path)
++{
++	char buf[1024];
++	FILE *file;
++
++	file = fopen(path, "r");
++	if (!file || !fgets(buf, sizeof(buf), file))
++		return NULL;
++	buf[strcspn(buf, "\n")] = 0;
++	if (fclose(file))
++		warn("unable to close %s:", path);
++
++	return bprintf("%s", buf);
++}
+diff -Prup slstatus-orig/config.def.h slstatus/config.def.h
+--- slstatus-orig/config.def.h	Fri Apr  7 08:26:28 2023
++++ slstatus/config.def.h	Fri Apr  7 08:27:30 2023
+@@ -62,6 +62,7 @@ static const char unknown_str[] = "n/a";
+  *                                                     NULL on OpenBSD
+  * wifi_perc           WiFi signal in percent          interface name (wlan0)
+  * wifi_essid          WiFi ESSID                      interface name (wlan0)
++ * first_line          first line from a file          file name
+  */
+ static const struct arg args[] = {
+ 	/* function format          argument */
+diff -Prup slstatus-orig/slstatus.h slstatus/slstatus.h
+--- slstatus-orig/slstatus.h	Fri Apr  7 08:26:40 2023
++++ slstatus/slstatus.h	Fri Apr  7 08:28:03 2023
+@@ -82,3 +82,6 @@ const char *vol_perc(const char *card);
+ /* wifi */
+ const char *wifi_perc(const char *interface);
+ const char *wifi_essid(const char *interface);
++
++/* file */
++const char *first_line(const char *path);
+diff -Prup slstatus-orig/Makefile slstatus/Makefile
+--- Makefile.orig	Fri Apr  7 08:44:18 2023
++++ Makefile	Fri Apr  7 08:44:26 2023
+@@ -11,6 +11,7 @@ COM =\
+ 	components/datetime\
+ 	components/disk\
+ 	components/entropy\
++	components/first_line\
+ 	components/hostname\
+ 	components/ip\
+ 	components/kernel_release\