476 lines
17 KiB
C
476 lines
17 KiB
C
#undef I3__FILE__
|
||
#define I3__FILE__ "load_layout.c"
|
||
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
|
||
*
|
||
* load_layout.c: Restore (parts of) the layout, for example after an inplace
|
||
* restart.
|
||
*
|
||
*/
|
||
#include "all.h"
|
||
|
||
#include <yajl/yajl_common.h>
|
||
#include <yajl/yajl_gen.h>
|
||
#include <yajl/yajl_parse.h>
|
||
#include <yajl/yajl_version.h>
|
||
|
||
/* TODO: refactor the whole parsing thing */
|
||
|
||
static char *last_key;
|
||
static Con *json_node;
|
||
static Con *to_focus;
|
||
static bool parsing_swallows;
|
||
static bool parsing_rect;
|
||
static bool parsing_window_rect;
|
||
static bool parsing_geometry;
|
||
static bool parsing_focus;
|
||
struct Match *current_swallow;
|
||
|
||
/* This list is used for reordering the focus stack after parsing the 'focus'
|
||
* array. */
|
||
struct focus_mapping {
|
||
int old_id;
|
||
TAILQ_ENTRY(focus_mapping) focus_mappings;
|
||
};
|
||
|
||
static TAILQ_HEAD(focus_mappings_head, focus_mapping) focus_mappings =
|
||
TAILQ_HEAD_INITIALIZER(focus_mappings);
|
||
|
||
static int json_start_map(void *ctx) {
|
||
LOG("start of map, last_key = %s\n", last_key);
|
||
if (parsing_swallows) {
|
||
LOG("creating new swallow\n");
|
||
current_swallow = smalloc(sizeof(Match));
|
||
match_init(current_swallow);
|
||
TAILQ_INSERT_TAIL(&(json_node->swallow_head), current_swallow, matches);
|
||
} else {
|
||
if (!parsing_rect && !parsing_window_rect && !parsing_geometry) {
|
||
if (last_key && strcasecmp(last_key, "floating_nodes") == 0) {
|
||
DLOG("New floating_node\n");
|
||
Con *ws = con_get_workspace(json_node);
|
||
json_node = con_new_skeleton(NULL, NULL);
|
||
json_node->parent = ws;
|
||
DLOG("Parent is workspace = %p\n", ws);
|
||
} else {
|
||
Con *parent = json_node;
|
||
json_node = con_new_skeleton(NULL, NULL);
|
||
json_node->parent = parent;
|
||
}
|
||
}
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static int json_end_map(void *ctx) {
|
||
LOG("end of map\n");
|
||
if (!parsing_swallows && !parsing_rect && !parsing_window_rect && !parsing_geometry) {
|
||
/* Set a few default values to simplify manually crafted layout files. */
|
||
if (json_node->layout == L_DEFAULT) {
|
||
DLOG("Setting layout = L_SPLITH\n");
|
||
json_node->layout = L_SPLITH;
|
||
}
|
||
|
||
/* Sanity check: swallow criteria don’t make any sense on a split
|
||
* container. */
|
||
if (con_is_split(json_node) > 0 && !TAILQ_EMPTY(&(json_node->swallow_head))) {
|
||
DLOG("sanity check: removing swallows specification from split container\n");
|
||
while (!TAILQ_EMPTY(&(json_node->swallow_head))) {
|
||
Match *match = TAILQ_FIRST(&(json_node->swallow_head));
|
||
TAILQ_REMOVE(&(json_node->swallow_head), match, matches);
|
||
match_free(match);
|
||
}
|
||
}
|
||
|
||
LOG("attaching\n");
|
||
con_attach(json_node, json_node->parent, true);
|
||
LOG("Creating window\n");
|
||
x_con_init(json_node, json_node->depth);
|
||
json_node = json_node->parent;
|
||
}
|
||
if (parsing_rect)
|
||
parsing_rect = false;
|
||
if (parsing_window_rect)
|
||
parsing_window_rect = false;
|
||
if (parsing_geometry)
|
||
parsing_geometry = false;
|
||
return 1;
|
||
}
|
||
|
||
static int json_end_array(void *ctx) {
|
||
LOG("end of array\n");
|
||
if (!parsing_swallows && !parsing_focus) {
|
||
con_fix_percent(json_node);
|
||
}
|
||
if (parsing_swallows) {
|
||
parsing_swallows = false;
|
||
}
|
||
if (parsing_focus) {
|
||
/* Clear the list of focus mappings */
|
||
struct focus_mapping *mapping;
|
||
TAILQ_FOREACH_REVERSE(mapping, &focus_mappings, focus_mappings_head, focus_mappings) {
|
||
LOG("focus (reverse) %d\n", mapping->old_id);
|
||
Con *con;
|
||
TAILQ_FOREACH(con, &(json_node->focus_head), focused) {
|
||
if (con->old_id != mapping->old_id)
|
||
continue;
|
||
LOG("got it! %p\n", con);
|
||
/* Move this entry to the top of the focus list. */
|
||
TAILQ_REMOVE(&(json_node->focus_head), con, focused);
|
||
TAILQ_INSERT_HEAD(&(json_node->focus_head), con, focused);
|
||
break;
|
||
}
|
||
}
|
||
while (!TAILQ_EMPTY(&focus_mappings)) {
|
||
mapping = TAILQ_FIRST(&focus_mappings);
|
||
TAILQ_REMOVE(&focus_mappings, mapping, focus_mappings);
|
||
free(mapping);
|
||
}
|
||
parsing_focus = false;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
#if YAJL_MAJOR < 2
|
||
static int json_key(void *ctx, const unsigned char *val, unsigned int len) {
|
||
#else
|
||
static int json_key(void *ctx, const unsigned char *val, size_t len) {
|
||
#endif
|
||
LOG("key: %.*s\n", (int)len, val);
|
||
FREE(last_key);
|
||
last_key = scalloc((len+1) * sizeof(char));
|
||
memcpy(last_key, val, len);
|
||
if (strcasecmp(last_key, "swallows") == 0)
|
||
parsing_swallows = true;
|
||
|
||
if (strcasecmp(last_key, "rect") == 0)
|
||
parsing_rect = true;
|
||
|
||
if (strcasecmp(last_key, "window_rect") == 0)
|
||
parsing_window_rect = true;
|
||
|
||
if (strcasecmp(last_key, "geometry") == 0)
|
||
parsing_geometry = true;
|
||
|
||
if (strcasecmp(last_key, "focus") == 0)
|
||
parsing_focus = true;
|
||
|
||
return 1;
|
||
}
|
||
|
||
#if YAJL_MAJOR >= 2
|
||
static int json_string(void *ctx, const unsigned char *val, size_t len) {
|
||
#else
|
||
static int json_string(void *ctx, const unsigned char *val, unsigned int len) {
|
||
#endif
|
||
LOG("string: %.*s for key %s\n", (int)len, val, last_key);
|
||
if (parsing_swallows) {
|
||
char *sval;
|
||
sasprintf(&sval, "%.*s", len, val);
|
||
if (strcasecmp(last_key, "class") == 0) {
|
||
current_swallow->class = regex_new(sval);
|
||
} else if (strcasecmp(last_key, "instance") == 0) {
|
||
current_swallow->instance = regex_new(sval);
|
||
} else if (strcasecmp(last_key, "window_role") == 0) {
|
||
current_swallow->window_role = regex_new(sval);
|
||
} else if (strcasecmp(last_key, "title") == 0) {
|
||
current_swallow->title = regex_new(sval);
|
||
} else {
|
||
ELOG("swallow key %s unknown\n", last_key);
|
||
}
|
||
free(sval);
|
||
} else {
|
||
if (strcasecmp(last_key, "name") == 0) {
|
||
json_node->name = scalloc((len+1) * sizeof(char));
|
||
memcpy(json_node->name, val, len);
|
||
} else if (strcasecmp(last_key, "sticky_group") == 0) {
|
||
json_node->sticky_group = scalloc((len+1) * sizeof(char));
|
||
memcpy(json_node->sticky_group, val, len);
|
||
LOG("sticky_group of this container is %s\n", json_node->sticky_group);
|
||
} else if (strcasecmp(last_key, "orientation") == 0) {
|
||
/* Upgrade path from older versions of i3 (doing an inplace restart
|
||
* to a newer version):
|
||
* "orientation" is dumped before "layout". Therefore, we store
|
||
* whether the orientation was horizontal or vertical in the
|
||
* last_split_layout. When we then encounter layout == "default",
|
||
* we will use the last_split_layout as layout instead. */
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "none") == 0 ||
|
||
strcasecmp(buf, "horizontal") == 0)
|
||
json_node->last_split_layout = L_SPLITH;
|
||
else if (strcasecmp(buf, "vertical") == 0)
|
||
json_node->last_split_layout = L_SPLITV;
|
||
else LOG("Unhandled orientation: %s\n", buf);
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "border") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "none") == 0)
|
||
json_node->border_style = BS_NONE;
|
||
else if (strcasecmp(buf, "1pixel") == 0) {
|
||
json_node->border_style = BS_PIXEL;
|
||
json_node->current_border_width = 1;
|
||
} else if (strcasecmp(buf, "pixel") == 0)
|
||
json_node->border_style = BS_PIXEL;
|
||
else if (strcasecmp(buf, "normal") == 0)
|
||
json_node->border_style = BS_NORMAL;
|
||
else LOG("Unhandled \"border\": %s\n", buf);
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "type") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "root") == 0)
|
||
json_node->type = CT_ROOT;
|
||
else if (strcasecmp(buf, "output") == 0)
|
||
json_node->type = CT_OUTPUT;
|
||
else if (strcasecmp(buf, "con") == 0)
|
||
json_node->type = CT_CON;
|
||
else if (strcasecmp(buf, "floating_con") == 0)
|
||
json_node->type = CT_FLOATING_CON;
|
||
else if (strcasecmp(buf, "workspace") == 0)
|
||
json_node->type = CT_WORKSPACE;
|
||
else if (strcasecmp(buf, "dockarea") == 0)
|
||
json_node->type = CT_DOCKAREA;
|
||
else LOG("Unhandled \"type\": %s\n", buf);
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "layout") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "default") == 0)
|
||
/* This set above when we read "orientation". */
|
||
json_node->layout = json_node->last_split_layout;
|
||
else if (strcasecmp(buf, "stacked") == 0)
|
||
json_node->layout = L_STACKED;
|
||
else if (strcasecmp(buf, "tabbed") == 0)
|
||
json_node->layout = L_TABBED;
|
||
else if (strcasecmp(buf, "dockarea") == 0)
|
||
json_node->layout = L_DOCKAREA;
|
||
else if (strcasecmp(buf, "output") == 0)
|
||
json_node->layout = L_OUTPUT;
|
||
else if (strcasecmp(buf, "splith") == 0)
|
||
json_node->layout = L_SPLITH;
|
||
else if (strcasecmp(buf, "splitv") == 0)
|
||
json_node->layout = L_SPLITV;
|
||
else LOG("Unhandled \"layout\": %s\n", buf);
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "workspace_layout") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "default") == 0)
|
||
json_node->workspace_layout = L_DEFAULT;
|
||
else if (strcasecmp(buf, "stacked") == 0)
|
||
json_node->workspace_layout = L_STACKED;
|
||
else if (strcasecmp(buf, "tabbed") == 0)
|
||
json_node->workspace_layout = L_TABBED;
|
||
else LOG("Unhandled \"workspace_layout\": %s\n", buf);
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "last_split_layout") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "splith") == 0)
|
||
json_node->last_split_layout = L_SPLITH;
|
||
else if (strcasecmp(buf, "splitv") == 0)
|
||
json_node->last_split_layout = L_SPLITV;
|
||
else LOG("Unhandled \"last_splitlayout\": %s\n", buf);
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "mark") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
json_node->mark = buf;
|
||
} else if (strcasecmp(last_key, "floating") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "auto_off") == 0)
|
||
json_node->floating = FLOATING_AUTO_OFF;
|
||
else if (strcasecmp(buf, "auto_on") == 0)
|
||
json_node->floating = FLOATING_AUTO_ON;
|
||
else if (strcasecmp(buf, "user_off") == 0)
|
||
json_node->floating = FLOATING_USER_OFF;
|
||
else if (strcasecmp(buf, "user_on") == 0)
|
||
json_node->floating = FLOATING_USER_ON;
|
||
free(buf);
|
||
} else if (strcasecmp(last_key, "scratchpad_state") == 0) {
|
||
char *buf = NULL;
|
||
sasprintf(&buf, "%.*s", (int)len, val);
|
||
if (strcasecmp(buf, "none") == 0)
|
||
json_node->scratchpad_state = SCRATCHPAD_NONE;
|
||
else if (strcasecmp(buf, "fresh") == 0)
|
||
json_node->scratchpad_state = SCRATCHPAD_FRESH;
|
||
else if (strcasecmp(buf, "changed") == 0)
|
||
json_node->scratchpad_state = SCRATCHPAD_CHANGED;
|
||
free(buf);
|
||
}
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
#if YAJL_MAJOR >= 2
|
||
static int json_int(void *ctx, long long val) {
|
||
LOG("int %lld for key %s\n", val, last_key);
|
||
#else
|
||
static int json_int(void *ctx, long val) {
|
||
LOG("int %ld for key %s\n", val, last_key);
|
||
#endif
|
||
/* For backwards compatibility with i3 < 4.8 */
|
||
if (strcasecmp(last_key, "type") == 0)
|
||
json_node->type = val;
|
||
|
||
if (strcasecmp(last_key, "fullscreen_mode") == 0)
|
||
json_node->fullscreen_mode = val;
|
||
|
||
if (strcasecmp(last_key, "num") == 0)
|
||
json_node->num = val;
|
||
|
||
if (strcasecmp(last_key, "current_border_width") == 0)
|
||
json_node->current_border_width = val;
|
||
|
||
if (strcasecmp(last_key, "depth") == 0)
|
||
json_node->depth = val;
|
||
|
||
if (!parsing_swallows && strcasecmp(last_key, "id") == 0)
|
||
json_node->old_id = val;
|
||
|
||
if (parsing_focus) {
|
||
struct focus_mapping *focus_mapping = scalloc(sizeof(struct focus_mapping));
|
||
focus_mapping->old_id = val;
|
||
TAILQ_INSERT_TAIL(&focus_mappings, focus_mapping, focus_mappings);
|
||
}
|
||
|
||
if (parsing_rect || parsing_window_rect || parsing_geometry) {
|
||
Rect *r;
|
||
if (parsing_rect)
|
||
r = &(json_node->rect);
|
||
else if (parsing_window_rect)
|
||
r = &(json_node->window_rect);
|
||
else r = &(json_node->geometry);
|
||
if (strcasecmp(last_key, "x") == 0)
|
||
r->x = val;
|
||
else if (strcasecmp(last_key, "y") == 0)
|
||
r->y = val;
|
||
else if (strcasecmp(last_key, "width") == 0)
|
||
r->width = val;
|
||
else if (strcasecmp(last_key, "height") == 0)
|
||
r->height = val;
|
||
else ELOG("WARNING: unknown key %s in rect\n", last_key);
|
||
DLOG("rect now: (%d, %d, %d, %d)\n",
|
||
r->x, r->y, r->width, r->height);
|
||
}
|
||
if (parsing_swallows) {
|
||
if (strcasecmp(last_key, "id") == 0) {
|
||
current_swallow->id = val;
|
||
}
|
||
if (strcasecmp(last_key, "dock") == 0) {
|
||
current_swallow->dock = val;
|
||
}
|
||
if (strcasecmp(last_key, "insert_where") == 0) {
|
||
current_swallow->insert_where = val;
|
||
}
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
static int json_bool(void *ctx, int val) {
|
||
LOG("bool %d for key %s\n", val, last_key);
|
||
if (strcasecmp(last_key, "focused") == 0 && val) {
|
||
to_focus = json_node;
|
||
}
|
||
|
||
if (parsing_swallows) {
|
||
if (strcasecmp(last_key, "restart_mode") == 0)
|
||
current_swallow->restart_mode = val;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
static int json_double(void *ctx, double val) {
|
||
LOG("double %f for key %s\n", val, last_key);
|
||
if (strcasecmp(last_key, "percent") == 0) {
|
||
json_node->percent = val;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
void tree_append_json(Con *con, const char *filename, char **errormsg) {
|
||
FILE *f;
|
||
if ((f = fopen(filename, "r")) == NULL) {
|
||
LOG("Cannot open file \"%s\"\n", filename);
|
||
return;
|
||
}
|
||
struct stat stbuf;
|
||
if (fstat(fileno(f), &stbuf) != 0) {
|
||
LOG("Cannot fstat() the file\n");
|
||
fclose(f);
|
||
return;
|
||
}
|
||
char *buf = smalloc(stbuf.st_size);
|
||
int n = fread(buf, 1, stbuf.st_size, f);
|
||
if (n != stbuf.st_size) {
|
||
LOG("File \"%s\" could not be read entirely, not loading.\n", filename);
|
||
fclose(f);
|
||
return;
|
||
}
|
||
LOG("read %d bytes\n", n);
|
||
yajl_gen g;
|
||
yajl_handle hand;
|
||
static yajl_callbacks callbacks = {
|
||
.yajl_boolean = json_bool,
|
||
.yajl_integer = json_int,
|
||
.yajl_double = json_double,
|
||
.yajl_string = json_string,
|
||
.yajl_start_map = json_start_map,
|
||
.yajl_map_key = json_key,
|
||
.yajl_end_map = json_end_map,
|
||
.yajl_end_array = json_end_array,
|
||
};
|
||
#if YAJL_MAJOR >= 2
|
||
g = yajl_gen_alloc(NULL);
|
||
hand = yajl_alloc(&callbacks, NULL, (void*)g);
|
||
#else
|
||
g = yajl_gen_alloc(NULL, NULL);
|
||
hand = yajl_alloc(&callbacks, NULL, NULL, (void*)g);
|
||
#endif
|
||
/* Allowing comments allows for more user-friendly layout files. */
|
||
yajl_config(hand, yajl_allow_comments, true);
|
||
/* Allow multiple values, i.e. multiple nodes to attach */
|
||
yajl_config(hand, yajl_allow_multiple_values, true);
|
||
yajl_status stat;
|
||
json_node = con;
|
||
to_focus = NULL;
|
||
parsing_swallows = false;
|
||
parsing_rect = false;
|
||
parsing_window_rect = false;
|
||
parsing_geometry = false;
|
||
parsing_focus = false;
|
||
setlocale(LC_NUMERIC, "C");
|
||
stat = yajl_parse(hand, (const unsigned char*)buf, n);
|
||
if (stat != yajl_status_ok)
|
||
{
|
||
unsigned char *str = yajl_get_error(hand, 1, (const unsigned char*)buf, n);
|
||
ELOG("JSON parsing error: %s\n", str);
|
||
if (errormsg != NULL)
|
||
*errormsg = sstrdup((const char*)str);
|
||
yajl_free_error(hand, str);
|
||
}
|
||
|
||
/* In case not all containers were restored, we need to fix the
|
||
* percentages, otherwise i3 will crash immediately when rendering the
|
||
* next time. */
|
||
con_fix_percent(con);
|
||
|
||
setlocale(LC_NUMERIC, "");
|
||
#if YAJL_MAJOR >= 2
|
||
yajl_complete_parse(hand);
|
||
#else
|
||
yajl_parse_complete(hand);
|
||
#endif
|
||
|
||
fclose(f);
|
||
if (to_focus)
|
||
con_focus(to_focus);
|
||
}
|