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	slstatus-alsa-master-20230420-84a2f11.diff (2439B)
	---
	1 diff --git a/Makefile b/Makefile
	2 index 2f93b87..41d5e9a 100644
	3 --- a/Makefile
	4 +++ b/Makefile
	5 @@ -6,6 +6,7 @@ include config.mk
	6
	7 REQ = util
	8 COM =\
	9 + components/alsa_master_vol\
	10 components/battery\
	11 components/cpu\
	12 components/datetime\
	13 diff --git a/components/alsa_master_vol.c b/components/alsa_master_vol.c
	14 new file mode 100644
	15 index 0000000..acc283b
	16 --- /dev/null
	17 +++ b/components/alsa_master_vol.c
	18 @@ -0,0 +1,64 @@
	19 +/* Created by William Rabbermann */
	20 +#include <stdio.h>
	21 +#include <stdbool.h>
	22 +#include <string.h>
	23 +#include "../util.h"
	24 +
	25 +#define TMP_BUF_SIZE 14
	26 +#define VOL_BUF_SIZE 5
	27 +
	28 +const char *
	29 +alsa_master_vol(void)
	30 +{
	31 + bool MASTER_IS_MUTED = true;
	32 + char tmp_buf[TMP_BUF_SIZE];
	33 + short b;
	34 + unsigned short i = 0;
	35 +
	36 + FILE *fp = popen("amixer get Master \| tail -c13", "r");
	37 + char ch;
	38 + while ((ch = fgetc(fp)) != EOF && i < TMP_BUF_SIZE)
	39 + tmp_buf[i++] = ch;
	40 + tmp_buf[i] = '\0';
	41 + pclose(fp);
	42 +
	43 + b = i - 1;
	44 + while (b >= 0)
	45 + {
	46 + if ('[' == tmp_buf[b])
	47 + {
	48 + if (tmp_buf[b+1] == 'o' && tmp_buf[b+2] == 'n')
	49 + MASTER_IS_MUTED = false;
	50 + b -= 3;
	51 + break;
	52 + }
	53 + b--;
	54 + }
	55 +
	56 + if (MASTER_IS_MUTED) return bprintf("MUTE");
	57 + else
	58 + {
	59 + char vol_buf[VOL_BUF_SIZE];
	60 + while (b >= 0)
	61 + {
	62 + if ('[' == tmp_buf[b])
	63 + break;
	64 + b--;
	65 + }
	66 +
	67 + i = 0;
	68 + while (i < VOL_BUF_SIZE)
	69 + {
	70 + b++;
	71 + if (']' == tmp_buf[b])
	72 + {
	73 + vol_buf[i] = '\0';
	74 + break;
	75 + }
	76 + else
	77 + vol_buf[i++] = tmp_buf[b];
	78 + }
	79 +
	80 + return bprintf("%s", vol_buf);
	81 + }
	82 +}
	83 diff --git a/config.def.h b/config.def.h
	84 index 93a875a..6074441 100644
	85 --- a/config.def.h
	86 +++ b/config.def.h
	87 @@ -58,6 +58,7 @@ static const char unknown_str[] = "n/a";
	88 * uid UID of current user NULL
	89 * uptime system uptime NULL
	90 * username username of current user NULL
	91 + * alsa_master_vol ALSA Master device volume NULL
	92 * vol_perc OSS/ALSA volume in percent mixer file (/dev…
	93 * NULL on OpenBSD
	94 * wifi_perc WiFi signal in percent interface name (…
	95 diff --git a/slstatus.h b/slstatus.h
	96 index b0f2564..415afc1 100644
	97 --- a/slstatus.h
	98 +++ b/slstatus.h
	99 @@ -78,6 +78,7 @@ const char *uid(void);
	100
	101 /* volume */
	102 const char vol_perc(const char card);
	103 +const char *alsa_master_vol(void);
	104
	105 /* wifi */
	106 const char wifi_perc(const char interface);