aboutsummaryrefslogtreecommitdiffstats
path: root/src/todo.c
blob: 932e02a988e63b1ce090640b942acce3f5a76008 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/*
 * Calcurse - text-based organizer
 *
 * Copyright (c) 2004-2020 calcurse Development Team <misc@calcurse.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the
 *        following disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the
 *        following disclaimer in the documentation and/or other
 *        materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Send your feedback or comments to : misc@calcurse.org
 * Calcurse home page : http://calcurse.org
 *
 */

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "calcurse.h"
#include "sha1.h"

llist_t todolist;

static int todo_is_uncompleted(struct todo *todo, void *cbdata)
{
	return !todo->completed;
}

/* Returns a structure containing the selected item. */
struct todo *todo_get_item(int item_number, int skip_completed)
{
	llist_item_t *i;

	if (skip_completed)
		i = LLIST_FIND_NTH(&todolist, item_number, NULL,
				   todo_is_uncompleted);
	else
		i = LLIST_NTH(&todolist, item_number);

	if (!i)
		return NULL;

	return LLIST_GET_DATA(i);
}

static int todo_cmp(struct todo *a, struct todo *b)
{
	if (a->completed && !b->completed)
		return 1;
	if (b->completed && !a->completed)
		return -1;
	if (a->id > 0 && b->id == 0)
		return -1;
	if (b->id > 0 && a->id == 0)
		return 1;
	if (a->id == b->id)
		return strcmp(a->mesg, b->mesg);

	return a->id - b->id;
}

/*
 * Add an item in the todo linked list.
 */
struct todo *todo_add(char *mesg, int id, int completed, char *note)
{
	struct todo *todo;

	todo = mem_malloc(sizeof(struct todo));
	todo->mesg = mem_strdup(mesg);
	todo->id = id;
	todo->completed = completed;
	todo->note = (note != NULL
		      && note[0] != '\0') ? mem_strdup(note) : NULL;

	LLIST_ADD_SORTED(&todolist, todo, todo_cmp);

	return todo;
}

char *todo_tostr(struct todo *todo)
{
	char *res;
	const char *cstr = todo->completed ? "-" : "";

	if (todo->note)
		asprintf(&res, "[%s%d]>%s %s", cstr, todo->id, todo->note,
			 todo->mesg);
	else
		asprintf(&res, "[%s%d] %s", cstr, todo->id, todo->mesg);

	return res;
}

char *todo_hash(struct todo *todo)
{
	char *raw = todo_tostr(todo);
	char *sha1 = mem_malloc(SHA1_DIGESTLEN * 2 + 1);
	sha1_digest(raw, sha1);
	mem_free(raw);

	return sha1;
}

void todo_write(struct todo *todo, FILE * f)
{
	char *str = todo_tostr(todo);
	fprintf(f, "%s\n", str);
	mem_free(str);
}

/* Delete a note previously attached to a todo item. */
void todo_delete_note(struct todo *todo)
{
	if (!todo->note)
		EXIT(_("no note attached"));
	erase_note(&todo->note);
}

/* Delete an item from the todo linked list. */
void todo_delete(struct todo *todo)
{
	llist_item_t *i = LLIST_FIND_FIRST(&todolist, todo, NULL);

	if (!i)
		EXIT(_("no such todo"));

	LLIST_REMOVE(&todolist, i);
	mem_free(todo->mesg);
	erase_note(&todo->note);
	mem_free(todo);
}

/*
 * Make sure an item is located at the right position within the sorted list.
 */
void todo_resort(struct todo *t)
{
	LLIST_REORDER(&todolist, t, todo_cmp);
}

/* Flag a todo item. */
void todo_flag(struct todo *t)
{
	t->completed = !t->completed;
	todo_resort(t);
}

/*
 * Returns the position into the linked list corresponding to the
 * given todo item.
 */
int todo_get_position(struct todo *needle, int skip_completed)
{
	llist_item_t *i;
	int n = 0;

	if (skip_completed) {
		LLIST_FIND_FOREACH(&todolist, NULL, todo_is_uncompleted, i) {
			if (LLIST_TS_GET_DATA(i) == needle)
				return n;
			n++;
		}
	} else {
		LLIST_FOREACH(&todolist, i) {
			if (LLIST_TS_GET_DATA(i) == needle)
				return n;
			n++;
		}
	}

	return -1;
}

/* Attach a note to a todo */
void todo_edit_note(struct todo *i, const char *editor)
{
	edit_note(&i->note, editor);
}

/* View a note previously attached to a todo */
void todo_view_note(struct todo *i, const char *pager)
{
	view_note(i->note, pager);
}

void todo_free(struct todo *todo)
{
	mem_free(todo->mesg);
	erase_note(&todo->note);
	mem_free(todo);
}

void todo_init_list(void)
{
	LLIST_INIT(&todolist);
}

void todo_free_list(void)
{
	LLIST_FREE_INNER(&todolist, todo_free);
	LLIST_FREE(&todolist);
}