commit 7091d93fe18300c3bebff343ce1cb7164cfb2922
parent 9aada882f5a7cc8c268adcef42ca4963d5f66850
Author: in0rdr <andreas.gruhler@uzh.ch>
Date: Wed, 16 Nov 2016 23:09:01 +0800
diary.c
Diffstat:
| A | diary.c | | | 244 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 244 insertions(+), 0 deletions(-)
diff --git a/diary.c b/diary.c
@@ -0,0 +1,244 @@
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <ncurses.h>
+
+#define YEAR_RANGE 1
+#define CAL_WIDTH 21
+#define ASIDE_WIDTH 4
+#define MAX_MONTH_HEIGHT 6
+
+int cy, cx;
+time_t raw_time;
+struct tm cur_date;
+struct tm curs_date;
+char curs_date_str[70];
+struct tm cal_start;
+struct tm cal_end;
+
+void draw_wdays(WINDOW* head) {
+ char* weekdays[] = {"Mo","Tu","We","Th","Fr","Sa","Su"};
+ for (int wd = 0; wd < sizeof(weekdays)/sizeof(weekdays[0]); wd++) {
+ waddstr(head, weekdays[wd]);
+ waddch(head, ' ');
+ }
+ wrefresh(head);
+}
+
+void draw_calendar(WINDOW* number_pad, WINDOW* month_pad) {
+ struct tm i = cal_start;
+ char month[10];
+
+ while (timelocal(&i) <= timelocal(&cal_end)) {
+ getyx(number_pad, cy, cx);
+ mvwprintw(number_pad, cy, cx, "%2i", i.tm_mday);
+ waddch(number_pad, ' ');
+
+ if (i.tm_mday == 1) {
+ strftime(month, sizeof month, "%b", &i);
+ getyx(number_pad, cy, cx);
+ mvwprintw(month_pad, cy, 0, "%s ", month);
+ }
+
+ i.tm_mday++;
+ mktime(&i);
+ }
+}
+
+void update_date(WINDOW* dh) {
+ mktime(&curs_date);
+ strftime(curs_date_str, sizeof curs_date_str, "%Y-%m-%d", &curs_date);
+ mvwaddstr(dh, 0, 0, curs_date_str);
+ wrefresh(dh);
+}
+
+char* curs_date_file_path(char* dir) {
+ static char path[100];
+
+ strcpy(path, dir);
+ if (dir[strlen(dir) - 1] != '/')
+ strcat(path, "/");
+ strcat(path, curs_date_str);
+
+ return path;
+}
+
+char* curs_date_edit_cmd(char* dir) {
+ static char edit_cmd[150];
+ char* editor = getenv("EDITOR");
+ if (editor == NULL)
+ return NULL;
+
+ strcpy(edit_cmd, editor);
+ strcat(edit_cmd, " ");
+ strcat(edit_cmd, curs_date_file_path(dir));
+
+ return edit_cmd;
+}
+
+bool is_leap(int year) {
+ // normally leap is every 4 years,
+ // but is skipped every 100 years,
+ // unless it is divisible by 400
+ if (year % 400 == 0)
+ return true;
+ if (year % 4 == 0 && year % 100 != 0)
+ return true;
+
+ return false;
+}
+
+void read_diary(char* dir) {
+ int width = COLS - ASIDE_WIDTH - CAL_WIDTH;
+ WINDOW* prev = newpad(LINES - 1, width);
+
+ wclear(prev);
+ char buff[width];
+ int i = 0;
+ char* path = curs_date_file_path(dir);
+
+ FILE* fp = fopen(path, "r");
+ if (fp != NULL) {
+ while(fgets(buff, width, fp) != NULL) {
+ mvwprintw(prev, i, 0, buff);
+ i++;
+ }
+ fclose(fp);
+ }
+ prefresh(prev, 0, 0, 1, CAL_WIDTH + ASIDE_WIDTH, LINES, COLS);
+}
+
+bool go_to(WINDOW* calendar, WINDOW* month_sidebar, time_t date, int* cur_pad_pos) {
+ if (date < timelocal(&cal_start) || date > timelocal(&cal_end))
+ return false;
+
+ int diff_seconds = date - timelocal(&cal_start);
+ int diff_days = diff_seconds / 60 / 60 / 24;
+ int diff_weeks = diff_days / 7;
+ int diff_wdays = diff_days % 7;
+
+ localtime_r(&date, &curs_date);
+
+ getyx(calendar, cy, cx);
+ mvwchgat(calendar, cy , 0 , -1, A_NORMAL, 0, NULL);
+ mvwchgat(calendar, diff_weeks, diff_wdays * 3, 2, A_STANDOUT, 0, NULL);
+
+ if (diff_weeks < *cur_pad_pos)
+ *cur_pad_pos = diff_weeks;
+ if (diff_weeks > *cur_pad_pos + LINES - 2)
+ *cur_pad_pos = diff_weeks - LINES + 2;
+ prefresh(month_sidebar, *cur_pad_pos, 0, 1, 0, LINES - 1, ASIDE_WIDTH);
+ prefresh(calendar, *cur_pad_pos, 0, 1, ASIDE_WIDTH, LINES - 1, ASIDE_WIDTH + CAL_WIDTH);
+
+ return true;
+}
+
+void setup_cal_timeframe() {
+ raw_time = time(NULL);
+ localtime_r(&raw_time, &cur_date);
+ curs_date = cur_date;
+
+ cal_start = cur_date;
+ cal_start.tm_year -= YEAR_RANGE;
+ cal_start.tm_mon = 0;
+ cal_start.tm_mday = 1;
+ mktime(&cal_start);
+
+ if (cal_start.tm_wday != 1) {
+ // adjust start date to first Mon before 01.01
+ cal_start.tm_year--;
+ cal_start.tm_mon = 11;
+ cal_start.tm_mday = 31 - cal_start.tm_wday + 2;
+ mktime(&cal_start);
+ }
+
+ cal_end = cur_date;
+ cal_end.tm_year += YEAR_RANGE;
+ cal_end.tm_mon = 11;
+ cal_end.tm_mday = 31;
+ mktime(&cal_end);
+}
+
+int main(int argc, char** argv)
+{
+ if (argc < 2) {
+ printf("Expect diary directory as command line argument\n");
+ return 0;
+ }
+
+ setup_cal_timeframe();
+
+ initscr();
+ raw();
+ curs_set(0);
+
+ WINDOW* date_header = newwin(1, 10, 0, ASIDE_WIDTH + CAL_WIDTH);
+ wattron(date_header, A_BOLD);
+ update_date(date_header);
+ WINDOW* wdays_header = newwin(1, 3 * 7, 0, ASIDE_WIDTH);
+ draw_wdays(wdays_header);
+
+ WINDOW* aside = newpad((YEAR_RANGE * 2 + 1) * 12 * MAX_MONTH_HEIGHT, ASIDE_WIDTH);
+ WINDOW* cal = newpad((YEAR_RANGE * 2 + 1) * 12 * MAX_MONTH_HEIGHT, CAL_WIDTH);
+ keypad(cal, TRUE);
+ draw_calendar(cal, aside);
+
+ int ch;
+ struct tm new_date;
+ char* diary_dir = argv[1];
+ // init the current pad possition at the very end,
+ // such that the cursor is displayed top of screen
+ int pad_pos = 9999999;
+
+ wmove(cal, 0, 0);
+ getyx(cal, cy, cx);
+ bool ret = go_to(cal, aside, raw_time, &pad_pos);
+ read_diary(diary_dir);
+
+ do {
+ ch = wgetch(cal);
+ new_date = curs_date;
+ char* ecmd = curs_date_edit_cmd(diary_dir);
+
+ switch(ch) {
+ case 'j':
+ case KEY_DOWN:
+ new_date.tm_mday += 7;
+ ret = go_to(cal, aside, timelocal(&new_date), &pad_pos);
+ break;
+ case 'k':
+ case KEY_UP:
+ new_date.tm_mday -= 7;
+ ret = go_to(cal, aside, timelocal(&new_date), &pad_pos);
+ break;
+ case 'l':
+ case KEY_RIGHT:
+ new_date.tm_mday++;
+ ret = go_to(cal, aside, timelocal(&new_date), &pad_pos);
+ break;
+ case 'h':
+ case KEY_LEFT:
+ new_date.tm_mday--;
+ ret = go_to(cal, aside, timelocal(&new_date), &pad_pos);
+ break;
+ case 't':
+ new_date = cur_date;
+ ret = go_to(cal, aside, raw_time, &pad_pos);
+ break;
+ case 'e':
+ if (ecmd)
+ system(ecmd);
+ curs_set(0);
+ break;
+ }
+
+ if (ret) {
+ update_date(date_header);
+ read_diary(diary_dir);
+ }
+ } while (ch != 'q');
+
+ endwin();
+ system("clear");
+ return 0;
+}
