first commit

1 files changed, 122 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..c11ce29
--- /dev/null
+++ b/main.c
@@ -0,0 +1,122 @@
+#include <stdio.h>
+#include <unistd.h>
+#include "agenda_entry.h"
+#define BS 100 //blocksize for buffers
+
+void destroy_entry_array(entry *array, int elements) {
+	for (int i = 0; i < elements; i++)
+		destroy_entry(array[i]);
+	free(array);
+}
+
+char *read_file_to_buffer(char *filename) {
+    FILE *fd = fopen(filename, "r");
+    int bufsize = BS,
+        bufread = 0;
+    char *buf = (char *)malloc(bufsize);
+    char *newbuf;
+
+    while (fread(buf + bufread, 1, 100, fd) == BS) {
+        newbuf = (char *)malloc(bufsize + BS);
+        strncpy(newbuf, buf, bufsize);
+        free(buf);
+        buf = newbuf;
+        bufsize += BS;
+        bufread += BS;
+    }
+    fclose(fd);
+    return buf;
+}
+
+// this function does not work... to debug!
+entry *read_entries_to_array(char *buffer, int *entries) {
+	int numentries = 5,
+		idx = 0;
+	entry *ret = (entry *)malloc(numentries * sizeof(entry));
+	char *cursor = buffer;
+	while (cursor) {
+		if (idx == numentries) {
+			entry *newret = (entry *)malloc((numentries + 5) * sizeof(entry));
+			memcpy(newret, ret, (idx)*sizeof(entry));
+			free(ret);
+			ret = newret;
+			numentries += 5;
+		}
+		ret[idx++] = read_agenda_entry(cursor);
+		cursor = next_entry(cursor);
+	}
+	*entries = idx;
+	return ret;
+}
+
+int main(int argc, char **argv) {
+	// unbuffering stdout in order to prevent leaks
+	// has the added benefit of reducing memory usage too
+	setvbuf(stdout, NULL, _IONBF, 0);
+	if (argc <= 1) {
+		printf("no agenda file supplied!\nUsage: otc <agendafile>\n");
+		return -1;
+	}
+	
+	// read file into buf 
+	char *buf = read_file_to_buffer(argv[1]);
+	if (strlen(buf) == 0) return -1; // don't do empty buffers
+	
+	// read entries into array
+	int idx = 0;
+	entry *agenda = read_entries_to_array(buf, &idx);
+	free(buf);
+	/*char *tmp = buf;
+	entry *agenda;
+	int numentries = 10,
+		idx = 0,
+        buflen = strlen(buf);
+	agenda = (entry *)malloc(numentries * sizeof(entry));
+	while (buf) {
+		agenda[idx++] = read_agenda_entry(buf);
+		tmp = next_entry(buf);
+		if (tmp == NULL) buflen = 0;
+		else buflen -= (tmp - buf);
+		buf = tmp;
+		}*/
+
+	// sort entries
+	sort_entry_array(agenda, idx);
+
+	// format nicely
+	char *e;
+	Date td = today();
+	Date nw = nextweek(td);
+	Date last_date = agenda[0].date;
+	if (!zero(last_date)) {
+		e = print_date_to_string(last_date);
+		if (smaller(last_date, td))
+			printf("\n%s [OUTATIME]:\n", e);
+		else if (smaller(last_date, nw))
+			printf("\n%s:\n", e);
+		free(e);
+	}
+	for (int i = 0; i < idx; i++) {
+		if (!eql(agenda[i].date, last_date)) {
+			last_date = agenda[i].date;
+			if (!zero(last_date)) {
+				e = print_date_to_string(last_date);
+				if (smaller(last_date, td))
+					printf("\n%s [OUTATIME]:\n", e);
+				else if (smaller(last_date, nw))
+					printf("\n%s:\n", e);
+				free(e);
+			} else {
+				printf("\nUnscheduled:\n");
+			}
+		}
+		e = format_entry(agenda[i]);
+		if (zero(agenda[i].date) || smaller(agenda[i].date, nw)) puts(e);
+		free(e);
+	}
+
+	// free up the memory
+	fclose(stdout);
+	destroy_entry_array(agenda, idx);
+	return 0;
+}