Tony Crisci
8 years ago
parent
c353e01c85
commit
6a1d71b8b8
@ -0,0 +1,42 @@
|
||||
#ifndef _SWAY_CRITERIA_H
|
||||
#define _SWAY_CRITERIA_H
|
||||
|
||||
#include "container.h"
|
||||
#include "list.h"
|
||||
|
||||
/**
|
||||
* Maps criteria (as a list of criteria tokens) to a command list.
|
||||
*
|
||||
* A list of tokens together represent a single criteria string (e.g.
|
||||
* '[class="abc" title="xyz"]' becomes two criteria tokens).
|
||||
*
|
||||
* for_window: Views matching all criteria will have the bound command list
|
||||
* executed on them.
|
||||
*
|
||||
* Set via `for_window <criteria> <cmd list>`.
|
||||
*/
|
||||
struct criteria {
|
||||
list_t *tokens; // struct crit_token, contains compiled regex.
|
||||
char *crit_raw; // entire criteria string (for logging)
|
||||
|
||||
char *cmdlist;
|
||||
};
|
||||
|
||||
int criteria_cmp(const void *item, const void *data);
|
||||
void free_criteria(struct criteria *crit);
|
||||
|
||||
// Pouplate list with crit_tokens extracted from criteria string, returns error
|
||||
// string or NULL if successful.
|
||||
char *extract_crit_tokens(list_t *tokens, const char *criteria);
|
||||
|
||||
// Returns list of criteria that match given container. These criteria have
|
||||
// been set with `for_window` commands and have an associated cmdlist.
|
||||
list_t *criteria_for(swayc_t *cont);
|
||||
|
||||
// Returns a list of all containers that match the given list of tokens.
|
||||
list_t *container_for(list_t *tokens);
|
||||
|
||||
// Returns true if any criteria in the given list matches this container
|
||||
bool criteria_any(swayc_t *cont, list_t *criteria);
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,413 @@
|
||||
#define _XOPEN_SOURCE 700
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <stdbool.h>
|
||||
#include <pcre.h>
|
||||
#include "sway/criteria.h"
|
||||
#include "sway/container.h"
|
||||
#include "sway/config.h"
|
||||
#include "sway/view.h"
|
||||
#include "stringop.h"
|
||||
#include "list.h"
|
||||
#include "log.h"
|
||||
|
||||
enum criteria_type { // *must* keep in sync with criteria_strings[]
|
||||
CRIT_APP_ID,
|
||||
CRIT_CLASS,
|
||||
CRIT_CON_ID,
|
||||
CRIT_CON_MARK,
|
||||
CRIT_FLOATING,
|
||||
CRIT_ID,
|
||||
CRIT_INSTANCE,
|
||||
CRIT_TILING,
|
||||
CRIT_TITLE,
|
||||
CRIT_URGENT,
|
||||
CRIT_WINDOW_ROLE,
|
||||
CRIT_WINDOW_TYPE,
|
||||
CRIT_WORKSPACE,
|
||||
CRIT_LAST
|
||||
};
|
||||
|
||||
static const char * const criteria_strings[CRIT_LAST] = {
|
||||
[CRIT_APP_ID] = "app_id",
|
||||
[CRIT_CLASS] = "class",
|
||||
[CRIT_CON_ID] = "con_id",
|
||||
[CRIT_CON_MARK] = "con_mark",
|
||||
[CRIT_FLOATING] = "floating",
|
||||
[CRIT_ID] = "id",
|
||||
[CRIT_INSTANCE] = "instance",
|
||||
[CRIT_TILING] = "tiling",
|
||||
[CRIT_TITLE] = "title",
|
||||
[CRIT_URGENT] = "urgent", // either "latest" or "oldest" ...
|
||||
[CRIT_WINDOW_ROLE] = "window_role",
|
||||
[CRIT_WINDOW_TYPE] = "window_type",
|
||||
[CRIT_WORKSPACE] = "workspace"
|
||||
};
|
||||
|
||||
/**
|
||||
* A single criteria token (ie. value/regex pair),
|
||||
* e.g. 'class="some class regex"'.
|
||||
*/
|
||||
struct crit_token {
|
||||
enum criteria_type type;
|
||||
pcre *regex;
|
||||
char *raw;
|
||||
};
|
||||
|
||||
static void free_crit_token(struct crit_token *crit) {
|
||||
pcre_free(crit->regex);
|
||||
free(crit->raw);
|
||||
free(crit);
|
||||
}
|
||||
|
||||
static void free_crit_tokens(list_t *crit_tokens) {
|
||||
for (int i = 0; i < crit_tokens->length; i++) {
|
||||
free_crit_token(crit_tokens->items[i]);
|
||||
}
|
||||
list_free(crit_tokens);
|
||||
}
|
||||
|
||||
// Extracts criteria string from its brackets. Returns new (duplicate)
|
||||
// substring.
|
||||
static char *criteria_from(const char *arg) {
|
||||
char *criteria = NULL;
|
||||
if (*arg == '[') {
|
||||
criteria = strdup(arg + 1);
|
||||
} else {
|
||||
criteria = strdup(arg);
|
||||
}
|
||||
|
||||
int last = strlen(criteria) - 1;
|
||||
if (criteria[last] == ']') {
|
||||
criteria[last] = '\0';
|
||||
}
|
||||
return criteria;
|
||||
}
|
||||
|
||||
// Return instances of c found in str.
|
||||
static int countchr(char *str, char c) {
|
||||
int found = 0;
|
||||
for (int i = 0; str[i]; i++) {
|
||||
if (str[i] == c) {
|
||||
++found;
|
||||
}
|
||||
}
|
||||
return found;
|
||||
}
|
||||
|
||||
// criteria_str is e.g. '[class="some class regex" instance="instance name"]'.
|
||||
//
|
||||
// Will create array of pointers in buf, where first is duplicate of given
|
||||
// string (must be freed) and the rest are pointers to names and values in the
|
||||
// base string (every other, naturally). argc will be populated with the length
|
||||
// of buf.
|
||||
//
|
||||
// Returns error string or NULL if successful.
|
||||
static char *crit_tokens(int *argc, char ***buf, const char * const criteria_str) {
|
||||
wlr_log(L_DEBUG, "Parsing criteria: '%s'", criteria_str);
|
||||
char *base = criteria_from(criteria_str);
|
||||
char *head = base;
|
||||
char *namep = head; // start of criteria name
|
||||
char *valp = NULL; // start of value
|
||||
|
||||
// We're going to place EOS markers where we need to and fill up an array
|
||||
// of pointers to the start of each token (either name or value).
|
||||
int pairs = countchr(base, '=');
|
||||
int max_tokens = pairs * 2 + 1; // this gives us at least enough slots
|
||||
|
||||
char **argv = *buf = calloc(max_tokens, sizeof(char*));
|
||||
argv[0] = base; // this needs to be freed by caller
|
||||
bool quoted = true;
|
||||
|
||||
*argc = 1; // uneven = name, even = value
|
||||
while (*head && *argc < max_tokens) {
|
||||
if (namep != head && *(head - 1) == '\\') {
|
||||
// escaped character: don't try to parse this
|
||||
} else if (*head == '=' && namep != head) {
|
||||
if (*argc % 2 != 1) {
|
||||
// we're not expecting a name
|
||||
return strdup("Unable to parse criteria: "
|
||||
"Found out of place equal sign");
|
||||
} else {
|
||||
// name ends here
|
||||
char *end = head; // don't want to rewind the head
|
||||
while (*(end - 1) == ' ') {
|
||||
--end;
|
||||
}
|
||||
*end = '\0';
|
||||
if (*(namep) == ' ') {
|
||||
namep = strrchr(namep, ' ') + 1;
|
||||
}
|
||||
argv[*argc] = namep;
|
||||
*argc += 1;
|
||||
}
|
||||
} else if (*head == '"') {
|
||||
if (*argc % 2 != 0) {
|
||||
// we're not expecting a value
|
||||
return strdup("Unable to parse criteria: "
|
||||
"Found quoted value where it was not expected");
|
||||
} else if (!valp) { // value starts here
|
||||
valp = head + 1;
|
||||
quoted = true;
|
||||
} else {
|
||||
// value ends here
|
||||
argv[*argc] = valp;
|
||||
*argc += 1;
|
||||
*head = '\0';
|
||||
valp = NULL;
|
||||
namep = head + 1;
|
||||
}
|
||||
} else if (*argc % 2 == 0 && *head != ' ') {
|
||||
// parse unquoted values
|
||||
if (!valp) {
|
||||
quoted = false;
|
||||
valp = head; // value starts here
|
||||
}
|
||||
} else if (valp && !quoted && *head == ' ') {
|
||||
// value ends here
|
||||
argv[*argc] = valp;
|
||||
*argc += 1;
|
||||
*head = '\0';
|
||||
valp = NULL;
|
||||
namep = head + 1;
|
||||
}
|
||||
head++;
|
||||
}
|
||||
|
||||
// catch last unquoted value if needed
|
||||
if (valp && !quoted && !*head) {
|
||||
argv[*argc] = valp;
|
||||
*argc += 1;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Returns error string on failure or NULL otherwise.
|
||||
static char *parse_criteria_name(enum criteria_type *type, char *name) {
|
||||
*type = CRIT_LAST;
|
||||
for (int i = 0; i < CRIT_LAST; i++) {
|
||||
if (strcmp(criteria_strings[i], name) == 0) {
|
||||
*type = (enum criteria_type) i;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (*type == CRIT_LAST) {
|
||||
const char *fmt = "Criteria type '%s' is invalid or unsupported.";
|
||||
int len = strlen(name) + strlen(fmt) - 1;
|
||||
char *error = malloc(len);
|
||||
snprintf(error, len, fmt, name);
|
||||
return error;
|
||||
} else if (*type == CRIT_URGENT || *type == CRIT_WINDOW_ROLE ||
|
||||
*type == CRIT_WINDOW_TYPE) {
|
||||
// (we're just being helpful here)
|
||||
const char *fmt = "\"%s\" criteria currently unsupported, "
|
||||
"no window will match this";
|
||||
int len = strlen(fmt) + strlen(name) - 1;
|
||||
char *error = malloc(len);
|
||||
snprintf(error, len, fmt, name);
|
||||
return error;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Returns error string on failure or NULL otherwise.
|
||||
static char *generate_regex(pcre **regex, char *value) {
|
||||
const char *reg_err;
|
||||
int offset;
|
||||
|
||||
*regex = pcre_compile(value, PCRE_UTF8 | PCRE_UCP, ®_err, &offset, NULL);
|
||||
|
||||
if (!*regex) {
|
||||
const char *fmt = "Regex compilation (for '%s') failed: %s";
|
||||
int len = strlen(fmt) + strlen(value) + strlen(reg_err) - 3;
|
||||
char *error = malloc(len);
|
||||
snprintf(error, len, fmt, value, reg_err);
|
||||
return error;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Test whether the criterion corresponds to the currently focused window
|
||||
static bool crit_is_focused(const char *value) {
|
||||
return !strcmp(value, "focused") || !strcmp(value, "__focused__");
|
||||
}
|
||||
|
||||
// Populate list with crit_tokens extracted from criteria string, returns error
|
||||
// string or NULL if successful.
|
||||
char *extract_crit_tokens(list_t *tokens, const char * const criteria) {
|
||||
int argc;
|
||||
char **argv = NULL, *error = NULL;
|
||||
if ((error = crit_tokens(&argc, &argv, criteria))) {
|
||||
goto ect_cleanup;
|
||||
}
|
||||
for (int i = 1; i + 1 < argc; i += 2) {
|
||||
char* name = argv[i], *value = argv[i + 1];
|
||||
struct crit_token *token = calloc(1, sizeof(struct crit_token));
|
||||
token->raw = strdup(value);
|
||||
|
||||
if ((error = parse_criteria_name(&token->type, name))) {
|
||||
free_crit_token(token);
|
||||
goto ect_cleanup;
|
||||
} else if (token->type == CRIT_URGENT || crit_is_focused(value)) {
|
||||
wlr_log(L_DEBUG, "%s -> \"%s\"", name, value);
|
||||
list_add(tokens, token);
|
||||
} else if((error = generate_regex(&token->regex, value))) {
|
||||
free_crit_token(token);
|
||||
goto ect_cleanup;
|
||||
} else {
|
||||
wlr_log(L_DEBUG, "%s -> /%s/", name, value);
|
||||
list_add(tokens, token);
|
||||
}
|
||||
}
|
||||
ect_cleanup:
|
||||
free(argv[0]); // base string
|
||||
free(argv);
|
||||
return error;
|
||||
}
|
||||
|
||||
static int regex_cmp(const char *item, const pcre *regex) {
|
||||
return pcre_exec(regex, NULL, item, strlen(item), 0, 0, NULL, 0);
|
||||
}
|
||||
|
||||
// test a single view if it matches list of criteria tokens (all of them).
|
||||
static bool criteria_test(swayc_t *cont, list_t *tokens) {
|
||||
if (cont->type != C_VIEW) {
|
||||
return false;
|
||||
}
|
||||
struct sway_view *view = cont->sway_view;
|
||||
|
||||
int matches = 0;
|
||||
for (int i = 0; i < tokens->length; i++) {
|
||||
struct crit_token *crit = tokens->items[i];
|
||||
switch (crit->type) {
|
||||
case CRIT_CLASS: // TODO
|
||||
break;
|
||||
case CRIT_CON_ID: {
|
||||
char *endptr;
|
||||
size_t crit_id = strtoul(crit->raw, &endptr, 10);
|
||||
|
||||
if (*endptr == 0 && cont->id == crit_id) {
|
||||
++matches;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case CRIT_CON_MARK: // TODO
|
||||
break;
|
||||
case CRIT_FLOATING: // TODO
|
||||
break;
|
||||
case CRIT_ID: // TODO
|
||||
break;
|
||||
case CRIT_APP_ID:
|
||||
if (!view->iface.get_prop) {
|
||||
break;
|
||||
}
|
||||
|
||||
const char *app_id =
|
||||
cont->sway_view->iface.get_prop(view, VIEW_PROP_APP_ID);
|
||||
|
||||
if (!app_id) {
|
||||
break;
|
||||
}
|
||||
|
||||
if (crit->regex && regex_cmp(app_id, crit->regex) == 0) {
|
||||
matches++;
|
||||
}
|
||||
break;
|
||||
case CRIT_INSTANCE: // TODO
|
||||
break;
|
||||
case CRIT_TILING: // TODO
|
||||
break;
|
||||
case CRIT_TITLE:
|
||||
if (!cont->name) {
|
||||
// ignore
|
||||
} else if (crit->regex && regex_cmp(cont->name, crit->regex) == 0) {
|
||||
matches++;
|
||||
}
|
||||
break;
|
||||
case CRIT_URGENT: // "latest" or "oldest"
|
||||
break;
|
||||
case CRIT_WINDOW_ROLE:
|
||||
break;
|
||||
case CRIT_WINDOW_TYPE:
|
||||
break;
|
||||
case CRIT_WORKSPACE: // TODO
|
||||
break;
|
||||
default:
|
||||
sway_abort("Invalid criteria type (%i)", crit->type);
|
||||
break;
|
||||
}
|
||||
}
|
||||
return matches == tokens->length;
|
||||
}
|
||||
|
||||
int criteria_cmp(const void *a, const void *b) {
|
||||
if (a == b) {
|
||||
return 0;
|
||||
} else if (!a) {
|
||||
return -1;
|
||||
} else if (!b) {
|
||||
return 1;
|
||||
}
|
||||
const struct criteria *crit_a = a, *crit_b = b;
|
||||
int cmp = lenient_strcmp(crit_a->cmdlist, crit_b->cmdlist);
|
||||
if (cmp != 0) {
|
||||
return cmp;
|
||||
}
|
||||
return lenient_strcmp(crit_a->crit_raw, crit_b->crit_raw);
|
||||
}
|
||||
|
||||
void free_criteria(struct criteria *crit) {
|
||||
if (crit->tokens) {
|
||||
free_crit_tokens(crit->tokens);
|
||||
}
|
||||
if (crit->cmdlist) {
|
||||
free(crit->cmdlist);
|
||||
}
|
||||
if (crit->crit_raw) {
|
||||
free(crit->crit_raw);
|
||||
}
|
||||
free(crit);
|
||||
}
|
||||
|
||||
bool criteria_any(swayc_t *cont, list_t *criteria) {
|
||||
for (int i = 0; i < criteria->length; i++) {
|
||||
struct criteria *bc = criteria->items[i];
|
||||
if (criteria_test(cont, bc->tokens)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
list_t *criteria_for(swayc_t *cont) {
|
||||
list_t *criteria = config->criteria, *matches = create_list();
|
||||
for (int i = 0; i < criteria->length; i++) {
|
||||
struct criteria *bc = criteria->items[i];
|
||||
if (criteria_test(cont, bc->tokens)) {
|
||||
list_add(matches, bc);
|
||||
}
|
||||
}
|
||||
return matches;
|
||||
}
|
||||
|
||||
struct list_tokens {
|
||||
list_t *list;
|
||||
list_t *tokens;
|
||||
};
|
||||
|
||||
static void container_match_add(swayc_t *container, struct list_tokens *list_tokens) {
|
||||
if (criteria_test(container, list_tokens->tokens)) {
|
||||
list_add(list_tokens->list, container);
|
||||
}
|
||||
}
|
||||
|
||||
list_t *container_for(list_t *tokens) {
|
||||
struct list_tokens list_tokens = (struct list_tokens){create_list(), tokens};
|
||||
|
||||
container_map(&root_container, (void (*)(swayc_t *, void *))container_match_add, &list_tokens);
|
||||
|
||||
// TODO look in the scratchpad
|
||||
|
||||
return list_tokens.list;
|
||||
}
|
||||
Loading…
Reference in new issue