Changeset f4ebaf3c in mainline for uspace/app/date/date.c

Timestamp:

2012-04-18T00:18:26Z (12 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

bfc5577a

Parents:

e5fbe06

Message:

date: Let the user set current date/time

File:

• uspace/app/date/date.c (modified) (4 diffs)

uspace/app/date/date.c

@@ -35 +35 @@
 #include <malloc.h>
 #include <ipc/clock_ctl.h>
+#include <getopt.h>
+#include <ctype.h>
 
 #define NAME   "date"
+
+static int read_date_from_arg(char *wdate, struct tm *t);
+static int read_time_from_arg(char *wdate, struct tm *t);
+static int read_num_from_str(char *str, size_t len, int *n);
+static void usage(void);
 
 int
 main(int argc, char **argv)
 {
-        int rc;
+        int rc, c;
         category_id_t cat_id;
-        size_t svc_cnt;
+        size_t        svc_cnt;
         service_id_t  *svc_ids = NULL;
-        service_id_t svc_id;
-        char *svc_name = NULL;
-
-        sysarg_t battery_ok;
-        struct tm t;
+        service_id_t  svc_id;
+        char          *svc_name = NULL;
+        bool          read_only = true;
+        char          *wdate = NULL;
+        char          *wtime = NULL;
+        sysarg_t      battery_ok;
+        struct tm     t;
+
+        while ((c = getopt(argc, argv, "d:t:")) != -1) {
+                switch (c) {
+                case 'd':
+                        wdate = (char *)optarg;
+                        read_only = false;
+                        break;
+                case 't':
+                        wtime = (char *)optarg;
+                        read_only = false;
+                        break;
+                case '?':
+                        usage();
+                        return 1;
+                }
+        }
 
         /* Get the id of the clock category */
@@ -96 +121 @@
         }
 
+        /* Check the battery status (if present) */
         async_exch_t *exch = async_exchange_begin(sess);
         rc = async_req_0_1(exch, CLOCK_GET_BATTERY_STATUS, &battery_ok);
@@ -110 +136 @@
         }
 
-        printf("%02d/%02d/%d ", t.tm_mday, t.tm_mon + 1, 1900 + t.tm_year);
-        printf("%02d:%02d:%02d\n", t.tm_hour, t.tm_min, t.tm_sec);
+        if (read_only) {
+                /* Print the current time and exit */
+                printf("%02d/%02d/%d ", t.tm_mday,
+                    t.tm_mon + 1, 1900 + t.tm_year);
+                printf("%02d:%02d:%02d\n", t.tm_hour, t.tm_min, t.tm_sec);
+        } else {
+                if (wdate) {
+                        rc = read_date_from_arg(wdate, &t);
+                        if (rc != EOK) {
+                                printf(NAME ": error, date format not "
+                                    "recognized\n");
+                                usage();
+                                goto exit;
+                        }
+                }
+                if (wtime) {
+                        rc = read_time_from_arg(wtime, &t);
+                        if (rc != EOK) {
+                                printf(NAME ": error, time format not "
+                                    "recognized\n");
+                                usage();
+                                goto exit;
+                        }
+                }
+
+                rc = clock_dev_time_set(sess, &t);
+                if (rc != EOK) {
+                        printf(NAME ": error, Unable to set date/time\n");
+                        goto exit;
+                }
+        }
 
 exit:
@@ -119 +174 @@
 }
 
+static int
+read_date_from_arg(char *wdate, struct tm *t)
+{
+        int rc;
+
+        if (str_size(wdate) != 10) /* DD/MM/YYYY */
+                return EINVAL;
+
+        if (wdate[2] != '/' ||
+            wdate[5] != '/') {
+                return EINVAL;
+        }
+
+        rc = read_num_from_str(&wdate[0], 2, &t->tm_mday);
+        if (rc != EOK)
+                return rc;
+
+        rc = read_num_from_str(&wdate[3], 2, &t->tm_mon);
+        if (rc != EOK)
+                return rc;
+        t->tm_mon--;
+
+        rc = read_num_from_str(&wdate[6], 4, &t->tm_year);
+        t->tm_year -= 1900;
+        return rc;
+}
+
+static int
+read_time_from_arg(char *wtime, struct tm *t)
+{
+        int rc;
+        size_t len = str_size(wtime);
+        bool sec_present = len > 5;
+
+        if (len > 8 || len < 5) /* HH:MM[:SS] */
+                return EINVAL;
+
+        if (sec_present && wtime[5] != ':')
+                return EINVAL;
+
+        if (wtime[2] != ':')
+                return EINVAL;
+
+        rc = read_num_from_str(&wtime[0], 2, &t->tm_hour);
+        if (rc != EOK)
+                return rc;
+
+        rc = read_num_from_str(&wtime[3], 2, &t->tm_min);
+        if (rc != EOK)
+                return rc;
+
+        if (sec_present)
+                rc = read_num_from_str(&wtime[6], 2, &t->tm_sec);
+        else
+                t->tm_sec = 0;
+
+        return rc;
+}
+
+static int
+read_num_from_str(char *str, size_t len, int *n)
+{
+        size_t i;
+
+        *n = 0;
+
+        for (i = 0; i < len; ++i, ++str) {
+                if (!isdigit(*str))
+                        return EINVAL;
+                *n *= 10;
+                *n += *str - '0';
+        }
+
+        return EOK;
+}
+
+static void
+usage(void)
+{
+        printf("Usage: date [-d DD/MM/YYYY] [-t HH:MM[:SS]]\n");
+        printf("       -d   Change the current date\n");
+        printf("       -t   Change the current time\n");
+}
+