Breaks configfiles! Major refactoring of i3status, see below

We finally switched to libconfuse for a configuration file format
which does not require much work for the programmer nor for the user.
Plus, it avoids the Not-Invented-Here syndrome of yet another config
file format.

Furthermore, as a consequence of providing format strings for every
"module" (ipv6, wireless, …), we directly print the output and thus
we needed to drop support for wmii. This allowed us to get rid of
quite some complexity.

Documentation about the new configuration file and options will
follow. This commit is the beginning of what will be i3status v2.0.

1 files changed, 149 insertions, 0 deletions

diff --git a/src/print_battery_info.c b/src/print_battery_info.c
new file mode 100644
index 0000000..eb1f6bb
--- /dev/null
+++ b/src/print_battery_info.c
@@ -0,0 +1,149 @@
+// vim:ts=8:expandtab
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "i3status.h"
+
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
+/*
+ * Get battery information from /sys. Note that it uses the design capacity to
+ * calculate the percentage, not the last full capacity, so you can see how
+ * worn off your battery is.
+ *
+ */
+void print_battery_info(int number, const char *format) {
+        char buf[1024];
+        char *walk, *last;
+        int full_design = -1,
+            remaining = -1,
+            present_rate = -1;
+        charging_status_t status = CS_DISCHARGING;
+
+#if defined(LINUX)
+        static char batpath[512];
+        sprintf(batpath, "/sys/class/power_supply/BAT%d/uevent", number);
+        if (!slurp(batpath, buf, sizeof(buf))) {
+                printf("No battery");
+                return;
+        }
+
+        for (walk = buf, last = buf; (walk-buf) < 1024; walk++) {
+                if (*walk == '\n') {
+                        last = walk+1;
+                        continue;
+                }
+
+                if (*walk != '=')
+                        continue;
+
+                if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
+                    BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
+                        remaining = atoi(walk+1);
+                else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
+                        present_rate = atoi(walk+1);
+                else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
+                        status = CS_CHARGING;
+                else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
+                        status = CS_FULL;
+                else {
+                        /* The only thing left is the full capacity */
+#if 0
+                        if (bat->use_last_full) {
+                                if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") &&
+                                    !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL"))
+                                        continue;
+                        } else {
+#endif
+                                if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") &&
+                                    !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
+                                        continue;
+                        //}
+
+                        full_design = atoi(walk+1);
+                }
+        }
+
+        if ((full_design == 1) || (remaining == -1))
+                return;
+
+        if (present_rate > 0) {
+                float remaining_time;
+                int seconds, hours, minutes;
+                if (status == CS_CHARGING)
+                        remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
+                else if (status == CS_DISCHARGING)
+                        remaining_time = ((float)remaining / (float)present_rate);
+                else remaining_time = 0;
+
+                seconds = (int)(remaining_time * 3600.0);
+                hours = seconds / 3600;
+                seconds -= (hours * 3600);
+                minutes = seconds / 60;
+                seconds -= (minutes * 60);
+
+                (void)printf("%s %.02f%% %02d:%02d:%02d",
+                        (status == CS_CHARGING ? "CHR" :
+                         (status == CS_DISCHARGING ? "BAT" : "FULL")),
+                        (((float)remaining / (float)full_design) * 100),
+                        max(hours, 0), max(minutes, 0), max(seconds, 0));
+        } else {
+                (void)printf("%s %.02f%%",
+                        (status == CS_CHARGING ? "CHR" :
+                         (status == CS_DISCHARGING ? "BAT" : "FULL")),
+                        (((float)remaining / (float)full_design) * 100));
+        }
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+        int state;
+        int sysctl_rslt;
+        size_t sysctl_size = sizeof(sysctl_rslt);
+
+        if (sysctlbyname(BATT_LIFE, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
+                printf("No battery");
+                return;
+        }
+
+        present_rate = sysctl_rslt;
+        if (sysctlbyname(BATT_TIME, &sysctl_rslt, &sysctl_size, NULL, 0) != 0) {
+                printf("No battery");
+                return;
+        }
+
+        remaining = sysctl_rslt;
+        if (sysctlbyname(BATT_STATE, &sysctl_rslt, &sysctl_size, NULL,0) != 0) {
+                printf("No battery");
+                return;
+        }
+
+        state = sysctl_rslt;
+        if (state == 0 && present_rate == 100)
+                status = CS_FULL;
+        else if (state == 0 && present_rate < 100)
+                status = CS_CHARGING;
+        else
+                status = CS_DISCHARGING;
+
+        full_design = sysctl_rslt;
+
+        if (state == 1) {
+                int hours, minutes;
+                minutes = remaining;
+                hours = minutes / 60;
+                minutes -= (hours * 60);
+                (void)printf("%s %02d%% %02dh%02d",
+                               (status == CS_CHARGING ? "CHR" :
+                                (status == CS_DISCHARGING ? "BAT" : "FULL")),
+                               present_rate,
+                               max(hours, 0), max(minutes, 0));
+        } else {
+                (void)printf("%s %02d%%",
+                               (status == CS_CHARGING ? "CHR" :
+                                (status == CS_DISCHARGING ? "BAT" : "FULL")),
+                               present_rate);
+        }
+#endif
+}