From 08ac19b665fceed3be23739075390a41b5dbfcfb Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sun, 4 Apr 2021 13:52:47 +0200
Subject: m + move common code from get-contact-birthday.c and list-birthdays.c
 to common-birthday.c
MIME-Version: 1.0
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 Makefile               |  12 +++---
 common-birthday.c      | 112 +++++++++++++++++++++++++++++++++++++++++++++++++
 common.h               |   6 +++
 config.mk              |   6 +--
 get-contact-birthday.c | 109 -----------------------------------------------
 list-birthdays.c       | 111 +-----------------------------------------------
 6 files changed, 128 insertions(+), 228 deletions(-)
 create mode 100644 common-birthday.c

diff --git a/Makefile b/Makefile
index e4ef9ab..b2b1f21 100644
--- a/Makefile
+++ b/Makefile
@@ -60,8 +60,8 @@ BIN =\
 HDR =\
 	common.h
 
-OBJ = $(BIN:=.o)
-BOBJ = $(BIN:=.bo)
+OBJ = $(BIN:=.o) common-birthday.o
+BOBJ = $(OBJ:.o=.bo)
 
 
 $(OBJ): $(@:.o=.c) $(HDR)
@@ -109,8 +109,8 @@ find-contact-by-photo: find-contact-by-photo.o
 find-contact-by-site: find-contact-by-site.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
-get-contact-birthday: get-contact-birthday.o
-	$(CC) -o $@ $@.o $(LDFLAGS)
+get-contact-birthday: get-contact-birthday.o common-birthday.o
+	$(CC) -o $@ $@.o common-birthday.o $(LDFLAGS)
 
 get-contact-chats: get-contact-chats.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
@@ -151,8 +151,8 @@ get-contact-sites: get-contact-sites.o
 is-contact-ice: is-contact-ice.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
-list-birthdays: list-birthdays.o
-	$(CC) -o $@ $@.o $(LDFLAGS)
+list-birthdays: list-birthdays.o common-birthday.o
+	$(CC) -o $@ $@.o common-birthday.o $(LDFLAGS)
 
 list-chat-contacts: list-chat-contacts.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
diff --git a/common-birthday.c b/common-birthday.c
new file mode 100644
index 0000000..d6088ec
--- /dev/null
+++ b/common-birthday.c
@@ -0,0 +1,112 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+static const int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+int
+get_age(struct libcontacts_birthday *bday, const struct tm *now)
+{
+	int age = now->tm_year + 1900 - (int)bday->year;
+	if (now->tm_mon + 1 < bday->month)
+		age -= 1;
+	else if (now->tm_mon + 1 == bday->month)
+		age -= (now->tm_mday < bday->day);
+	return age;
+}
+
+void
+print_birthdate(struct libcontacts_birthday *bday, const struct tm *now)
+{
+	int age, days = 0, y, m, d;
+	if (bday->year)
+		printf("%04u-", bday->year);
+	else
+		printf("??""??""-");
+	if (bday->month) {
+		printf("(%02u)%.3s-", (unsigned)bday->month,
+		       &"JanFebMarAprMayJunJulAugSepOctNovDec"[3 * ((bday->month - 1) % 12)]);
+	} else {
+		printf("(??"")??""?-");
+	}
+	if (bday->day)
+		printf("%02u", (unsigned)bday->day);
+	else
+		printf("??");
+	if ((bday->month - 1) % 12 == 1 && bday->day == 29) {
+		bday->day -= bday->before_on_common;
+		printf(" (%s on common years)", bday->before_on_common ? "(02)Feb-28" : "(03)Mar-01");
+	}
+	if (bday->year && bday->month && bday->day) {
+		age = get_age(bday, now);
+		y = (int)bday->year - 1900;
+		m = (int)bday->month - 1;
+		d = (int)bday->day;
+		while (m != now->tm_mon || d > now->tm_mday) {
+			days += days_in_month[m] - (d - 1);
+			days += (m == 1 && y % 4 == 0 && (y % 100 || y % 400 == 0));
+			d = 1;
+			if (++m == 12) {
+				y += 1;
+				m = 0;
+			}
+		}
+		days += now->tm_mday - d;
+		printf(", %i %s and %i %s old", age, age == 1 ? "year" : "years", days, days == 1 ? "day" : "days");
+	}
+	printf("\n");
+}
+
+void
+print_birthday(struct libcontacts_birthday *bday, const struct tm *now)
+{
+	int next_year = 0, leap_year = 0, year, age, days = 0, y, m, d;
+	struct tm when;
+	if (now->tm_mon + 1 > bday->month)
+		next_year = 1;
+	else if (now->tm_mon + 1 == bday->month)
+		next_year = (now->tm_mday > bday->day);
+	if (bday->year) {
+		printf("%04i-", now->tm_year + next_year + 1900);
+	} else {
+		printf("??""??""-");
+	}
+	year = now->tm_year + next_year + 1900;
+	if (year % 4 == 0 && (year % 100 || year % 400 == 0))
+		leap_year = 1;
+	if (((bday->month - 1) % 12 == 1 && bday->day == 29) && leap_year) {
+		if (bday->before_on_common) {
+			bday->day -= 1;
+		} else {
+			bday->day = 1;
+			bday->month += 1;
+		}
+	}
+	printf("(%02u)%.3s-%02u (", (unsigned)bday->month,
+	       &"JanFebMarAprMayJunJulAugSepOctNovDec"[3 * ((bday->month - 1) % 12)], (unsigned)bday->day);
+	when.tm_year = now->tm_year + next_year;
+	when.tm_mon = (bday->month - 1) % 12;
+	when.tm_mday = bday->day;
+	if (bday->year) {
+		age = get_age(bday, &when);
+		printf("%i %s ", age, age == 1 ? "year" : "years");
+	}
+	if (when.tm_mon == now->tm_mon && when.tm_mday == now->tm_mday) {
+		printf("today)\n");
+	} else {
+		y = now->tm_year;
+		m = now->tm_mon;
+		d = now->tm_mday;
+		while (m != when.tm_mon || d > when.tm_mday) {
+			days += days_in_month[m] - (d - 1);
+			days += (m == 1 && y % 4 == 0 && (y % 100 || y % 400 == 0));
+			d = 1;
+			if (++m == 12) {
+				y += 1;
+				m = 0;
+			}
+		}
+		days += when.tm_mday - d;
+		printf("in %i %s)\n", days, days == 1 ? "day" : "days");
+	}
+}
diff --git a/common.h b/common.h
index 3fcd407..6f38731 100644
--- a/common.h
+++ b/common.h
@@ -11,3 +11,9 @@
 #ifndef BUFSIZ
 # define BUFSIZ 4096
 #endif
+
+
+/* common-birthday.c */
+int get_age(struct libcontacts_birthday *bday, const struct tm *now);
+void print_birthdate(struct libcontacts_birthday *bday, const struct tm *now);
+void print_birthday(struct libcontacts_birthday *bday, const struct tm *now);
diff --git a/config.mk b/config.mk
index 2c119c1..5724519 100644
--- a/config.mk
+++ b/config.mk
@@ -3,6 +3,6 @@ MANPREFIX = $(PREFIX)/share/man
 
 CC = cc
 
-CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -I../libcontacts
-CFLAGS   = -std=c99 -Wall -O2
-LDFLAGS  = -s -L../libcontacts -lcontacts -lsimple
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700
+CFLAGS   = -std=c99 -Wall -Os
+LDFLAGS  = -s -lcontacts -lsimple
diff --git a/get-contact-birthday.c b/get-contact-birthday.c
index 173d6a2..c92c7ff 100644
--- a/get-contact-birthday.c
+++ b/get-contact-birthday.c
@@ -4,115 +4,6 @@
 USAGE("[-n] contact-id ...");
 
 
-static int
-get_age(struct libcontacts_birthday *bday, const struct tm *now)
-{
-	int age = now->tm_year + 1900 - (int)bday->year;
-	if (now->tm_mon + 1 < bday->month)
-		age -= 1;
-	else if (now->tm_mon + 1 == bday->month)
-		age -= (now->tm_mday < bday->day);
-	return age;
-}
-
-static void
-print_birthdate(struct libcontacts_birthday *bday, const struct tm *now)
-{
-	static const int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-	int age, days = 0, y, m, d;
-	if (bday->year)
-		printf("%04u-", bday->year);
-	else
-		printf("??""??""-");
-	if (bday->month) {
-		printf("(%02u)%.3s-", (unsigned)bday->month,
-		       &"JanFebMarAprMayJunJulAugSepOctNovDec"[3 * ((bday->month - 1) % 12)]);
-	} else {
-		printf("(??"")??""?-");
-	}
-	if (bday->day)
-		printf("%02u", (unsigned)bday->day);
-	else
-		printf("??");
-	if ((bday->month - 1) % 12 == 1 && bday->day == 29) {
-		bday->day -= bday->before_on_common;
-		printf(" (%s on common years)", bday->before_on_common ? "(02)Feb-28" : "(03)Mar-01");
-	}
-	if (bday->year && bday->month && bday->day) {
-		age = get_age(bday, now);
-		y = (int)bday->year - 1900;
-		m = (int)bday->month - 1;
-		d = (int)bday->day;
-		while (m != now->tm_mon || d > now->tm_mday) {
-			days += days_in_month[m] - (d - 1);
-			days += (m == 1 && y % 4 == 0 && (y % 100 || y % 400 == 0));
-			d = 1;
-			if (++m == 12) {
-				y += 1;
-				m = 0;
-			}
-		}
-		days += now->tm_mday - d;
-		printf(", %i %s and %i %s old", age, age == 1 ? "year" : "years", days, days == 1 ? "day" : "days");
-	}
-	printf("\n");
-}
-
-static void
-print_birthday(struct libcontacts_birthday *bday, const struct tm *now)
-{
-	static const int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-	int next_year = 0, leap_year = 0, year, age, days = 0, y, m, d;
-	struct tm when;
-	if (now->tm_mon + 1 > bday->month)
-		next_year = 1;
-	else if (now->tm_mon + 1 == bday->month)
-		next_year = (now->tm_mday > bday->day);
-	if (bday->year) {
-		printf("%04i-", now->tm_year + next_year + 1900);
-	} else {
-		printf("??""??""-");
-	}
-	year = now->tm_year + next_year + 1900;
-	if (year % 4 == 0 && (year % 100 || year % 400 == 0))
-		leap_year = 1;
-	if (((bday->month - 1) % 12 == 1 && bday->day == 29) && leap_year) {
-		if (bday->before_on_common) {
-			bday->day -= 1;
-		} else {
-			bday->day = 1;
-			bday->month += 1;
-		}
-	}
-	printf("(%02u)%.3s-%02u (", (unsigned)bday->month,
-	       &"JanFebMarAprMayJunJulAugSepOctNovDec"[3 * ((bday->month - 1) % 12)], (unsigned)bday->day);
-	when.tm_year = now->tm_year + next_year;
-	when.tm_mon = (bday->month - 1) % 12;
-	when.tm_mday = bday->day;
-	if (bday->year) {
-		age = get_age(bday, &when);
-		printf("%i %s ", age, age == 1 ? "year" : "years");
-	}
-	if (when.tm_mon == now->tm_mon && when.tm_mday == now->tm_mday) {
-		printf("today)\n");
-	} else {
-		y = now->tm_year;
-		m = now->tm_mon;
-		d = now->tm_mday;
-		while (m != when.tm_mon || d > when.tm_mday) {
-			days += days_in_month[m] - (d - 1);
-			days += (m == 1 && y % 4 == 0 && (y % 100 || y % 400 == 0));
-			d = 1;
-			if (++m == 12) {
-				y += 1;
-				m = 0;
-			}
-		}
-		days += when.tm_mday - d;
-		printf("in %i %s)\n", days, days == 1 ? "day" : "days");
-	}
-}
-
 int
 main(int argc, char *argv[])
 {
diff --git a/list-birthdays.c b/list-birthdays.c
index 950df2a..13d75ed 100644
--- a/list-birthdays.c
+++ b/list-birthdays.c
@@ -4,114 +4,7 @@
 USAGE("[-n] (-L | contact-id ...)");
 
 
-static int
-get_age(struct libcontacts_birthday *bday, const struct tm *now)
-{
-	int age = now->tm_year + 1900 - (int)bday->year;
-	if (now->tm_mon + 1 < bday->month)
-		age -= 1;
-	else if (now->tm_mon + 1 == bday->month)
-		age -= (now->tm_mday < bday->day);
-	return age;
-}
-
-static void
-print_birthdate(struct libcontacts_birthday *bday, const struct tm *now)
-{
-	static const int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-	int age, days = 0, y, m, d;
-	if (bday->year)
-		printf("%04u-", bday->year);
-	else
-		printf("??""??""-");
-	if (bday->month) {
-		printf("(%02u)%.3s-", (unsigned)bday->month,
-		       &"JanFebMarAprMayJunJulAugSepOctNovDec"[3 * ((bday->month - 1) % 12)]);
-	} else {
-		printf("(??"")??""?-");
-	}
-	if (bday->day)
-		printf("%02u", (unsigned)bday->day);
-	else
-		printf("??");
-	if ((bday->month - 1) % 12 == 1 && bday->day == 29) {
-		bday->day -= bday->before_on_common;
-		printf(" (%s on common years)", bday->before_on_common ? "(02)Feb-28" : "(03)Mar-01");
-	}
-	if (bday->year && bday->month && bday->day) {
-		age = get_age(bday, now);
-		y = (int)bday->year - 1900;
-		m = (int)bday->month - 1;
-		d = (int)bday->day;
-		while (m != now->tm_mon || d > now->tm_mday) {
-			days += days_in_month[m] - (d - 1);
-			days += (m == 1 && y % 4 == 0 && (y % 100 || y % 400 == 0));
-			d = 1;
-			if (++m == 12) {
-				y += 1;
-				m = 0;
-			}
-		}
-		days += now->tm_mday - d;
-		printf(", %i %s and %i %s old", age, age == 1 ? "year" : "years", days, days == 1 ? "day" : "days");
-	}
-	printf("\n");
-}
-
-static void
-print_birthday(struct libcontacts_birthday *bday, const struct tm *now)
-{
-	static const int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-	int next_year = 0, leap_year = 0, year, age, days = 0, y, m, d;
-	struct tm when;
-	if (now->tm_mon + 1 > bday->month)
-		next_year = 1;
-	else if (now->tm_mon + 1 == bday->month)
-		next_year = (now->tm_mday > bday->day);
-	if (bday->year) {
-		printf("%04i-", now->tm_year + next_year + 1900);
-	} else {
-		printf("??""??""-");
-	}
-	year = now->tm_year + next_year + 1900;
-	if (year % 4 == 0 && (year % 100 || year % 400 == 0))
-		leap_year = 1;
-	if (((bday->month - 1) % 12 == 1 && bday->day == 29) && leap_year) {
-		if (bday->before_on_common) {
-			bday->day -= 1;
-		} else {
-			bday->day = 1;
-			bday->month += 1;
-		}
-	}
-	printf("(%02u)%.3s-%02u (", (unsigned)bday->month,
-	       &"JanFebMarAprMayJunJulAugSepOctNovDec"[3 * ((bday->month - 1) % 12)], (unsigned)bday->day);
-	when.tm_year = now->tm_year + next_year;
-	when.tm_mon = (bday->month - 1) % 12;
-	when.tm_mday = bday->day;
-	if (bday->year) {
-		age = get_age(bday, &when);
-		printf("%i %s ", age, age == 1 ? "year" : "years");
-	}
-	if (when.tm_mon == now->tm_mon && when.tm_mday == now->tm_mday) {
-		printf("today)\n");
-	} else {
-		y = now->tm_year;
-		m = now->tm_mon;
-		d = now->tm_mday;
-		while (m != when.tm_mon || d > when.tm_mday) {
-			days += days_in_month[m] - (d - 1);
-			days += (m == 1 && y % 4 == 0 && (y % 100 || y % 400 == 0));
-			d = 1;
-			if (++m == 12) {
-				y += 1;
-				m = 0;
-			}
-		}
-		days += when.tm_mday - d;
-		printf("in %i %s)\n", days, days == 1 ? "day" : "days");
-	}
-}
+static struct tm *now;
 
 static int
 compare_by_birthdate(const void *apv, const void *bpv)
@@ -133,8 +26,6 @@ compare_by_birthdate(const void *apv, const void *bpv)
 	return 0;
 }
 
-static struct tm *now;
-
 static int
 compare_by_birthday(const void *apv, const void *bpv)
 {
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