stash: teach 'push' (and 'create_stash') to honor pathspec
[git.git] / column.c
blobd55ead18efeba9435bd2f2e76e2d7ac9ddc064c1
1 #include "cache.h"
2 #include "column.h"
3 #include "string-list.h"
4 #include "parse-options.h"
5 #include "run-command.h"
6 #include "utf8.h"
8 #define XY2LINEAR(d, x, y) (COL_LAYOUT((d)->colopts) == COL_COLUMN ? \
9 (x) * (d)->rows + (y) : \
10 (y) * (d)->cols + (x))
12 struct column_data {
13 const struct string_list *list;
14 unsigned int colopts;
15 struct column_options opts;
17 int rows, cols;
18 int *len; /* cell length */
19 int *width; /* index to the longest row in column */
22 /* return length of 's' in letters, ANSI escapes stripped */
23 static int item_length(unsigned int colopts, const char *s)
25 int len, i = 0;
26 struct strbuf str = STRBUF_INIT;
28 strbuf_addstr(&str, s);
29 while ((s = strstr(str.buf + i, "\033[")) != NULL) {
30 int len = strspn(s + 2, "0123456789;");
31 i = s - str.buf;
32 strbuf_remove(&str, i, len + 3); /* \033[<len><func char> */
34 len = utf8_strwidth(str.buf);
35 strbuf_release(&str);
36 return len;
40 * Calculate cell width, rows and cols for a table of equal cells, given
41 * table width and how many spaces between cells.
43 static void layout(struct column_data *data, int *width)
45 int i;
47 *width = 0;
48 for (i = 0; i < data->list->nr; i++)
49 if (*width < data->len[i])
50 *width = data->len[i];
52 *width += data->opts.padding;
54 data->cols = (data->opts.width - strlen(data->opts.indent)) / *width;
55 if (data->cols == 0)
56 data->cols = 1;
58 data->rows = DIV_ROUND_UP(data->list->nr, data->cols);
61 static void compute_column_width(struct column_data *data)
63 int i, x, y;
64 for (x = 0; x < data->cols; x++) {
65 data->width[x] = XY2LINEAR(data, x, 0);
66 for (y = 0; y < data->rows; y++) {
67 i = XY2LINEAR(data, x, y);
68 if (i < data->list->nr &&
69 data->len[data->width[x]] < data->len[i])
70 data->width[x] = i;
76 * Shrink all columns by shortening them one row each time (and adding
77 * more columns along the way). Hopefully the longest cell will be
78 * moved to the next column, column is shrunk so we have more space
79 * for new columns. The process ends when the whole thing no longer
80 * fits in data->total_width.
82 static void shrink_columns(struct column_data *data)
84 REALLOC_ARRAY(data->width, data->cols);
85 while (data->rows > 1) {
86 int x, total_width, cols, rows;
87 rows = data->rows;
88 cols = data->cols;
90 data->rows--;
91 data->cols = DIV_ROUND_UP(data->list->nr, data->rows);
92 if (data->cols != cols)
93 REALLOC_ARRAY(data->width, data->cols);
94 compute_column_width(data);
96 total_width = strlen(data->opts.indent);
97 for (x = 0; x < data->cols; x++) {
98 total_width += data->len[data->width[x]];
99 total_width += data->opts.padding;
101 if (total_width > data->opts.width) {
102 data->rows = rows;
103 data->cols = cols;
104 break;
107 compute_column_width(data);
110 /* Display without layout when not enabled */
111 static void display_plain(const struct string_list *list,
112 const char *indent, const char *nl)
114 int i;
116 for (i = 0; i < list->nr; i++)
117 printf("%s%s%s", indent, list->items[i].string, nl);
120 /* Print a cell to stdout with all necessary leading/traling space */
121 static int display_cell(struct column_data *data, int initial_width,
122 const char *empty_cell, int x, int y)
124 int i, len, newline;
126 i = XY2LINEAR(data, x, y);
127 if (i >= data->list->nr)
128 return -1;
130 len = data->len[i];
131 if (data->width && data->len[data->width[x]] < initial_width) {
133 * empty_cell has initial_width chars, if real column
134 * is narrower, increase len a bit so we fill less
135 * space.
137 len += initial_width - data->len[data->width[x]];
138 len -= data->opts.padding;
141 if (COL_LAYOUT(data->colopts) == COL_COLUMN)
142 newline = i + data->rows >= data->list->nr;
143 else
144 newline = x == data->cols - 1 || i == data->list->nr - 1;
146 printf("%s%s%s",
147 x == 0 ? data->opts.indent : "",
148 data->list->items[i].string,
149 newline ? data->opts.nl : empty_cell + len);
150 return 0;
153 /* Display COL_COLUMN or COL_ROW */
154 static void display_table(const struct string_list *list,
155 unsigned int colopts,
156 const struct column_options *opts)
158 struct column_data data;
159 int x, y, i, initial_width;
160 char *empty_cell;
162 memset(&data, 0, sizeof(data));
163 data.list = list;
164 data.colopts = colopts;
165 data.opts = *opts;
167 ALLOC_ARRAY(data.len, list->nr);
168 for (i = 0; i < list->nr; i++)
169 data.len[i] = item_length(colopts, list->items[i].string);
171 layout(&data, &initial_width);
173 if (colopts & COL_DENSE)
174 shrink_columns(&data);
176 empty_cell = xmallocz(initial_width);
177 memset(empty_cell, ' ', initial_width);
178 for (y = 0; y < data.rows; y++) {
179 for (x = 0; x < data.cols; x++)
180 if (display_cell(&data, initial_width, empty_cell, x, y))
181 break;
184 free(data.len);
185 free(data.width);
186 free(empty_cell);
189 void print_columns(const struct string_list *list, unsigned int colopts,
190 const struct column_options *opts)
192 struct column_options nopts;
194 if (!list->nr)
195 return;
196 assert((colopts & COL_ENABLE_MASK) != COL_AUTO);
198 memset(&nopts, 0, sizeof(nopts));
199 nopts.indent = opts && opts->indent ? opts->indent : "";
200 nopts.nl = opts && opts->nl ? opts->nl : "\n";
201 nopts.padding = opts ? opts->padding : 1;
202 nopts.width = opts && opts->width ? opts->width : term_columns() - 1;
203 if (!column_active(colopts)) {
204 display_plain(list, "", "\n");
205 return;
207 switch (COL_LAYOUT(colopts)) {
208 case COL_PLAIN:
209 display_plain(list, nopts.indent, nopts.nl);
210 break;
211 case COL_ROW:
212 case COL_COLUMN:
213 display_table(list, colopts, &nopts);
214 break;
215 default:
216 die("BUG: invalid layout mode %d", COL_LAYOUT(colopts));
220 int finalize_colopts(unsigned int *colopts, int stdout_is_tty)
222 if ((*colopts & COL_ENABLE_MASK) == COL_AUTO) {
223 if (stdout_is_tty < 0)
224 stdout_is_tty = isatty(1);
225 *colopts &= ~COL_ENABLE_MASK;
226 if (stdout_is_tty)
227 *colopts |= COL_ENABLED;
229 return 0;
232 struct colopt {
233 const char *name;
234 unsigned int value;
235 unsigned int mask;
238 #define LAYOUT_SET 1
239 #define ENABLE_SET 2
241 static int parse_option(const char *arg, int len, unsigned int *colopts,
242 int *group_set)
244 struct colopt opts[] = {
245 { "always", COL_ENABLED, COL_ENABLE_MASK },
246 { "never", COL_DISABLED, COL_ENABLE_MASK },
247 { "auto", COL_AUTO, COL_ENABLE_MASK },
248 { "plain", COL_PLAIN, COL_LAYOUT_MASK },
249 { "column", COL_COLUMN, COL_LAYOUT_MASK },
250 { "row", COL_ROW, COL_LAYOUT_MASK },
251 { "dense", COL_DENSE, 0 },
253 int i;
255 for (i = 0; i < ARRAY_SIZE(opts); i++) {
256 int set = 1, arg_len = len, name_len;
257 const char *arg_str = arg;
259 if (!opts[i].mask) {
260 if (arg_len > 2 && !strncmp(arg_str, "no", 2)) {
261 arg_str += 2;
262 arg_len -= 2;
263 set = 0;
267 name_len = strlen(opts[i].name);
268 if (arg_len != name_len ||
269 strncmp(arg_str, opts[i].name, name_len))
270 continue;
272 switch (opts[i].mask) {
273 case COL_ENABLE_MASK:
274 *group_set |= ENABLE_SET;
275 break;
276 case COL_LAYOUT_MASK:
277 *group_set |= LAYOUT_SET;
278 break;
281 if (opts[i].mask)
282 *colopts = (*colopts & ~opts[i].mask) | opts[i].value;
283 else {
284 if (set)
285 *colopts |= opts[i].value;
286 else
287 *colopts &= ~opts[i].value;
289 return 0;
292 return error("unsupported option '%s'", arg);
295 static int parse_config(unsigned int *colopts, const char *value)
297 const char *sep = " ,";
298 int group_set = 0;
300 while (*value) {
301 int len = strcspn(value, sep);
302 if (len) {
303 if (parse_option(value, len, colopts, &group_set))
304 return -1;
306 value += len;
308 value += strspn(value, sep);
311 * If none of "always", "never", and "auto" is specified, then setting
312 * layout implies "always".
314 * Current value in COL_ENABLE_MASK is disregarded. This means if
315 * you set column.ui = auto and pass --column=row, then "auto"
316 * will become "always".
318 if ((group_set & LAYOUT_SET) && !(group_set & ENABLE_SET))
319 *colopts = (*colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
320 return 0;
323 static int column_config(const char *var, const char *value,
324 const char *key, unsigned int *colopts)
326 if (!value)
327 return config_error_nonbool(var);
328 if (parse_config(colopts, value))
329 return error("invalid column.%s mode %s", key, value);
330 return 0;
333 int git_column_config(const char *var, const char *value,
334 const char *command, unsigned int *colopts)
336 const char *it;
338 if (!skip_prefix(var, "column.", &it))
339 return 0;
341 if (!strcmp(it, "ui"))
342 return column_config(var, value, "ui", colopts);
344 if (command && !strcmp(it, command))
345 return column_config(var, value, it, colopts);
347 return 0;
350 int parseopt_column_callback(const struct option *opt,
351 const char *arg, int unset)
353 unsigned int *colopts = opt->value;
354 *colopts |= COL_PARSEOPT;
355 *colopts &= ~COL_ENABLE_MASK;
356 if (unset) /* --no-column == never */
357 return 0;
358 /* --column == always unless "arg" states otherwise */
359 *colopts |= COL_ENABLED;
360 if (arg)
361 return parse_config(colopts, arg);
363 return 0;
366 static int fd_out = -1;
367 static struct child_process column_process = CHILD_PROCESS_INIT;
369 int run_column_filter(int colopts, const struct column_options *opts)
371 struct argv_array *argv;
373 if (fd_out != -1)
374 return -1;
376 child_process_init(&column_process);
377 argv = &column_process.args;
379 argv_array_push(argv, "column");
380 argv_array_pushf(argv, "--raw-mode=%d", colopts);
381 if (opts && opts->width)
382 argv_array_pushf(argv, "--width=%d", opts->width);
383 if (opts && opts->indent)
384 argv_array_pushf(argv, "--indent=%s", opts->indent);
385 if (opts && opts->padding)
386 argv_array_pushf(argv, "--padding=%d", opts->padding);
388 fflush(stdout);
389 column_process.in = -1;
390 column_process.out = dup(1);
391 column_process.git_cmd = 1;
393 if (start_command(&column_process))
394 return -2;
396 fd_out = dup(1);
397 close(1);
398 dup2(column_process.in, 1);
399 close(column_process.in);
400 return 0;
403 int stop_column_filter(void)
405 if (fd_out == -1)
406 return -1;
408 fflush(stdout);
409 close(1);
410 finish_command(&column_process);
411 dup2(fd_out, 1);
412 close(fd_out);
413 fd_out = -1;
414 return 0;