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f051edd1 QY |
1 | /* |
2 | * ASCII table generator. | |
3 | * Copyright (C) 2017 Cumulus Networks | |
4 | * Quentin Young | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | #ifndef _TERMTABLE_H_ | |
21 | #define _TERMTABLE_H_ | |
22 | ||
fe232cf8 QY |
23 | #include <zebra.h> |
24 | ||
5e244469 RW |
25 | #ifdef __cplusplus |
26 | extern "C" { | |
27 | #endif | |
28 | ||
f051edd1 QY |
29 | enum ttable_align { |
30 | LEFT, | |
31 | RIGHT, | |
32 | TOP, | |
33 | BOTTOM, | |
34 | }; | |
35 | ||
36 | struct ttable_border { | |
37 | char top; | |
38 | char bottom; | |
39 | char left; | |
40 | char right; | |
41 | ||
42 | bool top_on; | |
43 | bool bottom_on; | |
44 | bool left_on; | |
45 | bool right_on; | |
46 | }; | |
47 | ||
48 | /* cell style and cell */ | |
49 | struct ttable_cellstyle { | |
50 | short lpad; | |
51 | short rpad; | |
52 | enum ttable_align align; | |
53 | struct ttable_border border; | |
54 | }; | |
55 | ||
56 | struct ttable_cell { | |
57 | char *text; | |
58 | struct ttable_cellstyle style; | |
59 | }; | |
60 | ||
61 | /* table style and table */ | |
62 | struct ttable_style { | |
63 | char corner; /* intersection */ | |
64 | int indent; /* left table indent */ | |
65 | bool rownums_on; /* show row numbers; unimplemented */ | |
66 | ||
67 | struct ttable_border border; | |
68 | struct ttable_cellstyle cell; | |
69 | }; | |
70 | ||
71 | struct ttable { | |
72 | int nrows; /* number of rows */ | |
73 | int ncols; /* number of cols */ | |
74 | struct ttable_cell **table; /* table, row x col */ | |
75 | size_t size; /* size */ | |
76 | struct ttable_style style; /* style */ | |
77 | }; | |
78 | ||
79 | /* some predefined styles */ | |
80 | #define TTSTYLE_ASCII 0 | |
81 | #define TTSTYLE_BLANK 1 | |
82 | ||
83 | extern struct ttable_style ttable_styles[2]; | |
84 | ||
85 | /** | |
86 | * Creates a new table with the default style, which looks like this: | |
87 | * | |
88 | * +----------+----------+ | |
89 | * | column 1 | column 2 | | |
90 | * +----------+----------+ | |
91 | * | data... | data!! | | |
92 | * +----------+----------+ | |
93 | * | datums | 12345 | | |
94 | * +----------+----------+ | |
95 | * | |
96 | * @return the created table | |
97 | */ | |
98 | struct ttable *ttable_new(struct ttable_style *tts); | |
99 | ||
100 | /** | |
101 | * Deletes a table and releases all associated resources. | |
102 | * | |
103 | * @param tt the table to destroy | |
104 | */ | |
105 | void ttable_del(struct ttable *tt); | |
106 | ||
107 | /** | |
108 | * Deletes an individual cell. | |
109 | * | |
110 | * @param cell the cell to destroy | |
111 | */ | |
112 | void ttable_cell_del(struct ttable_cell *cell); | |
113 | ||
114 | /** | |
115 | * Inserts a new row at the given index. | |
116 | * | |
117 | * The row contents are determined by a format string. The format string has | |
118 | * the same form as a regular printf format string, except that columns are | |
119 | * delimited by '|'. For example, to make the first column of the table above, | |
120 | * the call is: | |
121 | * | |
122 | * ttable_insert_row(<tt>, <n>, "%s|%s", "column 1", "column 2"); | |
123 | * | |
124 | * All features of printf format strings are permissible here. | |
125 | * | |
126 | * Caveats: | |
127 | * - At present you cannot insert '|' into a cell's contents. | |
128 | * - If there are N columns, '|' must appear n-1 times or the row will not be | |
129 | * created | |
130 | * | |
131 | * @param tt table to insert row into | |
132 | * @param row the row number (begins at 0) | |
133 | * @param format column-separated format string | |
134 | * @param ... arguments to format string | |
135 | * | |
136 | * @return pointer to the first cell in the created row, or NULL if not enough | |
137 | * columns were specified | |
138 | */ | |
139 | struct ttable_cell *ttable_insert_row(struct ttable *tt, unsigned int row, | |
fe232cf8 | 140 | const char *format, ...) |
d62a17ae | 141 | PRINTF_ATTRIBUTE(3, 4); |
f051edd1 QY |
142 | /** |
143 | * Inserts a new row at the end of the table. | |
144 | * | |
145 | * The row contents are determined by a format string. The format string has | |
146 | * the same form as a regular printf format string, except that columns are | |
147 | * delimited by '|'. For example, to make the first column of the table above, | |
148 | * the call is: | |
149 | * | |
150 | * ttable_add_row(<tt>, "%s|%s", "column 1", "column 2"); | |
151 | * | |
152 | * All features of printf format strings are permissible here. | |
153 | * | |
154 | * Caveats: | |
155 | * - At present you cannot insert '|' into a cell's contents. | |
156 | * - If there are N columns, '|' must appear n-1 times or the row will not be | |
157 | * created | |
158 | * | |
159 | * @param tt table to insert row into | |
160 | * @param format column-separated format string | |
161 | * @param ... arguments to format string | |
162 | * | |
163 | * @return pointer to the first cell in the created row, or NULL if not enough | |
164 | * columns were specified | |
165 | */ | |
fe232cf8 | 166 | struct ttable_cell *ttable_add_row(struct ttable *tt, const char *format, ...) |
d62a17ae | 167 | PRINTF_ATTRIBUTE(2, 3); |
f051edd1 QY |
168 | |
169 | /** | |
170 | * Removes a row from the table. | |
171 | * | |
172 | * @param tt table to delete row from | |
173 | * @param row the row number (begins at 0) | |
174 | */ | |
175 | void ttable_del_row(struct ttable *tt, unsigned int row); | |
176 | ||
177 | /** | |
178 | * Sets alignment for a range of cells. | |
179 | * | |
180 | * Available alignments are LEFT and RIGHT. Cell contents will be aligned | |
181 | * accordingly, while respecting padding (if any). Suppose a cell has: | |
182 | * | |
183 | * lpad = 1 | |
184 | * rpad = 1 | |
185 | * align = RIGHT | |
186 | * text = 'datums' | |
187 | * | |
188 | * The cell would look like: | |
189 | * | |
190 | * +-------------------+ | |
191 | * | datums | | |
192 | * +-------------------+ | |
193 | * | |
194 | * On the other hand: | |
195 | * | |
196 | * lpad = 1 | |
197 | * rpad = 10 | |
198 | * align = RIGHT | |
199 | * text = 'datums' | |
200 | * | |
201 | * +-------------------+ | |
202 | * | datums | | |
203 | * +-------------------+ | |
204 | * | |
205 | * The default alignment is LEFT. | |
206 | * | |
207 | * @param tt the table to set alignment on | |
208 | * @param srow starting row index | |
209 | * @param scol starting column index | |
210 | * @param nrow # rows to align | |
211 | * @param ncol # cols to align | |
212 | * @param align the alignment to set | |
213 | */ | |
214 | void ttable_align(struct ttable *tt, unsigned int srow, unsigned int scol, | |
215 | unsigned int erow, unsigned int ecol, | |
216 | enum ttable_align align); | |
217 | ||
218 | /** | |
219 | * Sets padding for a range of cells. | |
220 | * | |
221 | * Available padding options are LEFT and RIGHT (the alignment enum is reused). | |
222 | * Both options may be set. Padding is treated as though it is stuck to the | |
223 | * walls of the cell. Suppose a cell has: | |
224 | * | |
225 | * lpad = 4 | |
226 | * rpad = 2 | |
227 | * align = RIGHT | |
228 | * text = 'datums' | |
229 | * | |
230 | * The cell padding, marked by '.', would look like: | |
231 | * | |
232 | * +--------------+ | |
233 | * | .datums. | | |
234 | * +--------------+ | |
235 | * | |
236 | * If the column is wider than the cell, the cell contents are aligned in an | |
237 | * additional padded field according to the cell alignment. | |
238 | * | |
239 | * +--------------------+ | |
240 | * | Data!!!11!~~~~~:-) | | |
241 | * +--------------------+ | |
242 | * | . datums. | | |
243 | * +--------------------+ | |
244 | * | |
245 | * @param tt the table to set padding on | |
246 | * @param srow starting row index | |
247 | * @param scol starting column index | |
248 | * @param nrow # rows to pad | |
249 | * @param ncol # cols to pad | |
250 | * @param align LEFT or RIGHT | |
251 | * @param pad # spaces to pad with | |
252 | */ | |
253 | void ttable_pad(struct ttable *tt, unsigned int srow, unsigned int scol, | |
254 | unsigned int nrow, unsigned int ncol, enum ttable_align align, | |
255 | short pad); | |
256 | ||
257 | /** | |
258 | * Restyle all cells according to table.cell.style. | |
259 | * | |
260 | * @param tt table to restyle | |
261 | */ | |
262 | void ttable_restyle(struct ttable *tt); | |
263 | ||
264 | /** | |
265 | * Turn left/right column separators on or off for specified column. | |
266 | * | |
267 | * @param tt table | |
268 | * @param col column index | |
269 | * @param align left or right separators | |
270 | * @param on true/false for on/off | |
271 | * @param sep character to use | |
272 | */ | |
273 | void ttable_colseps(struct ttable *tt, unsigned int col, | |
274 | enum ttable_align align, bool on, char sep); | |
275 | ||
276 | /** | |
277 | * Turn bottom row separators on or off for specified row. | |
278 | * | |
279 | * @param tt table | |
280 | * @param row row index | |
281 | * @param align left or right separators | |
282 | * @param on true/false for on/off | |
283 | * @param sep character to use | |
284 | */ | |
285 | void ttable_rowseps(struct ttable *tt, unsigned int row, | |
286 | enum ttable_align align, bool on, char sep); | |
287 | ||
288 | /** | |
289 | * Dumps a table to a heap-allocated string. | |
290 | * | |
291 | * Caller must free this string after use with | |
292 | * | |
293 | * XFREE (MTYPE_TMP, str); | |
294 | * | |
295 | * @param tt the table to dump | |
296 | * @param newline the desired newline sequence to use, null terminated. | |
297 | * @return table in text form | |
298 | */ | |
299 | char *ttable_dump(struct ttable *tt, const char *newline); | |
300 | ||
5e244469 RW |
301 | #ifdef __cplusplus |
302 | } | |
303 | #endif | |
304 | ||
f051edd1 | 305 | #endif /* _TERMTABLE_H */ |