-/* Time Keeping Bugs Abound! */
+/*
+ * Copyright (C) 2012-2013 Andy Spencer <andy753421@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _XOPEN_SOURCE
+#define _XOPEN_SOURCE_EXTENDED
#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include "date.h"
+#include "cal.h"
+#include "view.h"
#include "util.h"
+#pragma weak view_debug
+
+/* Static data */
+static FILE *debug_fd = NULL;
+
+/* View debugging */
+extern void view_debug(const char *fmt, va_list ap);
+
/* Helper functions */
-static int is_leap_year(year_t year)
+static void message(FILE *output_fd, const char *prefix, const char *fmt, va_list ap)
{
- return (year % 400 == 0) ? 1 :
- (year % 100 == 0) ? 0 :
- (year % 4 == 0) ? 1 : 0;
-}
+ va_list tmp;
-static wday_t day_of_week(year_t year, month_t month, day_t day)
-{
- static int tmp[] = {0, 3, 2, 5, 0, 3,
- 5, 1, 4, 6, 2, 4};
- if (month < 3)
- year--;
- int start = year + year / 4
- - year / 100
- + year / 400
- + tmp[month];
- return (start + day) % 7;
-}
+ /* Log to standard out */
+ if (output_fd) {
+ va_copy(tmp, ap);
+ fprintf(output_fd, "%s: ", prefix);
+ vfprintf(output_fd, fmt, tmp);
+ fprintf(output_fd, "\n");
+ fflush(output_fd);
+ }
-/* Time functions */
-int days_in_year(year_t year)
-{
- return 365 + is_leap_year(year);
-}
+ /* Log to debug file */
+ if (debug_fd) {
+ va_copy(tmp, ap);
+ fprintf(debug_fd, "%s: ", prefix);
+ vfprintf(debug_fd, fmt, tmp);
+ fprintf(debug_fd, "\n");
+ fflush(debug_fd);
+ }
-int days_in_month(year_t year, month_t month)
-{
- static int mdays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
- int days = mdays[month];
- if (month == FEB)
- days += is_leap_year(year);
- return days;
+ /* Log to status bar */
+ if (&view_debug) {
+ va_copy(tmp, ap);
+ view_debug(fmt, tmp);
+ }
}
-int weeks_in_month(year_t year, month_t month)
+/* Initialize */
+void util_init(void)
{
- int start = start_of_month(year, month);
- int days = days_in_month(year, month);
- return ((start + days)-1) / 7 + 1;
+ debug_fd = fopen("/tmp/lackey.log", "w+");
}
-wday_t start_of_month(year_t year, month_t month)
+/* String functions */
+void strsub(char *str, char find, char repl)
{
- return day_of_week(year, month, 1);
+ for (char *cur = str; *cur; cur++)
+ if (*cur == find)
+ *cur = repl;
}
-/* Debug functions */
-const char *month_to_str(month_t month)
+char *strcopy(const char *str)
{
- static const char *map[] =
- { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", };
- return map[month];
+ if (str == NULL)
+ return NULL;
+ return strdup(str);
}
-const char *month_to_string(month_t month)
+
+int match(const char *a, const char *b)
{
- static const char *map[] =
- { "January", "February", "March", "April",
- "May", "June", "July", "August",
- "September", "October", "November", "December" };
- return map[month];
+ if (a == b)
+ return 1;
+ if (!a || !b)
+ return 0;
+ return !strcmp(a, b);
}
-const char *day_to_st(wday_t day)
+/* Memory functions */
+void *alloc0(int size)
{
- static const char *map[] =
- { "Su","Mo", "Tu", "We", "Th", "Fr", "Sa" };
- return map[day];
+ void *data = calloc(1, size);
+ if (!data)
+ error("memory allocation failed");
+ return data;
}
-const char *day_to_str(wday_t day)
+
+/* File functions */
+char *read_file(const char *path, int *len)
{
- static const char *map[] =
- { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
- return map[day];
+ /* we could use stat, but we'll try to be portable */
+ FILE *fd = fopen(path, "rt+");
+ if (!fd)
+ return NULL;
+
+ int block = 512; // read size
+ int size = 512; // buffer size
+ int slen = 0; // string length
+ char *buf = malloc(size);
+ if (!buf)
+ goto err;
+
+ while (!feof(fd)) {
+ if (slen + block + 1 > size) {
+ size *= 2;
+ buf = realloc(buf, size);
+ if (!buf)
+ goto err;
+ }
+ slen += fread(&buf[slen], 1, block, fd);
+ buf[slen] = '\0';
+ }
+
+err:
+ if (len)
+ *len = slen;
+ fclose(fd);
+ return buf;
}
-const char *day_to_string(wday_t day)
+
+/* Debugging functions */
+void debug(char *fmt, ...)
{
- static const char *map[] =
- { "Sunday", "Monday", "Tuesday", "Wednesday",
- "Thursday", "Friday", "Saturday" };
- return map[day];
+ va_list ap;
+ va_start(ap, fmt);
+ message(NULL, "debug", fmt, ap);
+ va_end(ap);
}
-/* Test functions */
-void test_time(void)
+void error(char *fmt, ...)
{
- printf("Year Month Start Weeks Days\n");
- for (int y = 2012; y <= 2012; y++)
- for (int m = JAN; m <= DEC; m++) {
- printf("%-5d", y);
- printf("%-10s", month_to_string(m));
- printf("%-6s", day_to_str(start_of_month(y,m)));
- printf("%-6d", weeks_in_month(y,m));
- printf("%-2d", days_in_month(y,m));
- printf("\n");
- }
+ va_list ap;
+ va_start(ap, fmt);
+ fflush(stdout);
+ fflush(stderr);
+ message(stderr, "error", fmt, ap);
+ va_end(ap);
+ view_exit();
+ exit(-1);
}
projects / lackey / blobdiff