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cfgparse.y
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cfgparse.y
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%{
#include <stdio.h>
#include <string.h>
#include <xcb/xcb.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
#include "data.h"
#include "config.h"
#include "i3.h"
#include "util.h"
#include "queue.h"
#include "table.h"
extern int yylex(void);
extern FILE *yyin;
int yydebug = 1;
void yyerror(const char *str) {
fprintf(stderr,"error: %s\n",str);
}
int yywrap() {
return 1;
}
void parse_file(const char *f) {
SLIST_HEAD(variables_head, Variable) variables = SLIST_HEAD_INITIALIZER(&variables);
int fd, ret, read_bytes = 0;
struct stat stbuf;
char *buf;
FILE *fstr;
char buffer[1026], key[512], value[512];
if ((fd = open(f, O_RDONLY)) == -1)
die("Could not open configuration file: %s\n", strerror(errno));
if (fstat(fd, &stbuf) == -1)
die("Could not fstat file: %s\n", strerror(errno));
buf = smalloc(stbuf.st_size * sizeof(char));
while (read_bytes < stbuf.st_size) {
if ((ret = read(fd, buf + read_bytes, (stbuf.st_size - read_bytes))) < 0)
die("Could not read(): %s\n", strerror(errno));
read_bytes += ret;
}
if (lseek(fd, 0, SEEK_SET) == (off_t)-1)
die("Could not lseek: %s\n", strerror(errno));
if ((fstr = fdopen(fd, "r")) == NULL)
die("Could not fdopen: %s\n", strerror(errno));
while (!feof(fstr)) {
if (fgets(buffer, 1024, fstr) == NULL) {
if (feof(fstr))
break;
die("Could not read configuration file\n");
}
/* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
key[0] == '#' || strlen(key) < 3)
continue;
if (strcasecmp(key, "set") == 0) {
if (value[0] != '$')
die("Malformed variable assignment, name has to start with $\n");
/* get key/value for this variable */
char *v_key = value, *v_value;
if ((v_value = strstr(value, " ")) == NULL)
die("Malformed variable assignment, need a value\n");
*(v_value++) = '\0';
struct Variable *new = scalloc(sizeof(struct Variable));
new->key = sstrdup(v_key);
new->value = sstrdup(v_value);
SLIST_INSERT_HEAD(&variables, new, variables);
LOG("Got new variable %s = %s\n", v_key, v_value);
continue;
}
}
/* For every custom variable, see how often it occurs in the file and
* how much extra bytes it requires when replaced. */
struct Variable *current, *nearest;
int extra_bytes = 0;
SLIST_FOREACH(current, &variables, variables) {
int extra = (strlen(current->value) - strlen(current->key));
char *next;
for (next = buf;
(next = strcasestr(buf + (next - buf), current->key)) != NULL;
next += strlen(current->key))
extra_bytes += extra;
}
/* Then, allocate a new buffer and copy the file over to the new one,
* but replace occurences of our variables */
char *walk = buf, *destwalk;
char *new = smalloc((stbuf.st_size + extra_bytes) * sizeof(char));
destwalk = new;
while (walk < (buf + stbuf.st_size)) {
/* Find the next variable */
SLIST_FOREACH(current, &variables, variables)
current->next_match = strcasestr(walk, current->key);
nearest = NULL;
int distance = stbuf.st_size;
SLIST_FOREACH(current, &variables, variables) {
if (current->next_match == NULL)
continue;
if ((current->next_match - walk) < distance) {
distance = (current->next_match - walk);
nearest = current;
}
}
if (nearest == NULL) {
/* If there are no more variables, we just copy the rest */
strncpy(destwalk, walk, (buf + stbuf.st_size) - walk);
destwalk += (buf + stbuf.st_size) - walk;
*destwalk = '\0';
break;
} else {
/* Copy until the next variable, then copy its value */
strncpy(destwalk, walk, distance);
strncpy(destwalk + distance, nearest->value, strlen(nearest->value));
walk += distance + strlen(nearest->key);
destwalk += distance + strlen(nearest->value);
}
}
yy_scan_string(new);
if (yyparse() != 0) {
fprintf(stderr, "Could not parse configfile\n");
exit(1);
}
free(new);
free(buf);
}
%}
%union {
int number;
char *string;
struct Colortriple *color;
struct Assignment *assignment;
}
%token <number>NUMBER
%token <string>WORD
%token <string>STR
%token <string>STR_NG
%token <string>HEX
%token TOKBIND
%token TOKTERMINAL
%token TOKCOMMENT
%token TOKFONT
%token TOKBINDSYM
%token MODIFIER
%token TOKCONTROL
%token TOKSHIFT
%token WHITESPACE
%token TOKFLOATING_MODIFIER
%token QUOTEDSTRING
%token TOKWORKSPACE
%token TOKSCREEN
%token TOKASSIGN
%token TOKSET
%token TOKIPCSOCKET
%token TOKEXEC
%token TOKCOLOR
%token TOKARROW
%%
lines: /* empty */
| lines WHITESPACE line
| lines line
;
line:
bind
| bindsym
| floating_modifier
| workspace
| assign
| ipcsocket
| exec
| color
| terminal
| font
| comment
;
comment:
TOKCOMMENT
;
command:
STR
;
bind:
TOKBIND WHITESPACE binding_modifiers NUMBER WHITESPACE command
{
printf("\tFound binding mod%d with key %d and command %s\n", $<number>3, $4, $<string>6);
Binding *new = scalloc(sizeof(Binding));
new->keycode = $<number>4;
new->mods = $<number>3;
new->command = sstrdup($<string>6);
TAILQ_INSERT_TAIL(&bindings, new, bindings);
}
;
bindsym:
TOKBINDSYM WHITESPACE binding_modifiers WORD WHITESPACE command
{
printf("\tFound symbolic mod%d with key %s and command %s\n", $<number>3, $4, $<string>6);
Binding *new = scalloc(sizeof(Binding));
new->symbol = sstrdup($4);
new->mods = $<number>3;
new->command = sstrdup($<string>6);
TAILQ_INSERT_TAIL(&bindings, new, bindings);
}
;
floating_modifier:
TOKFLOATING_MODIFIER WHITESPACE binding_modifiers
{
LOG("floating modifier = %d\n", $<number>3);
config.floating_modifier = $<number>3;
}
;
workspace:
TOKWORKSPACE WHITESPACE NUMBER WHITESPACE TOKSCREEN WHITESPACE screen workspace_name
{
int ws_num = $<number>3;
if (ws_num < 1 || ws_num > 10) {
LOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
} else {
workspaces[ws_num - 1].preferred_screen = sstrdup($<string>7);
if ($<string>8 != NULL)
workspace_set_name(&(workspaces[ws_num - 1]), $<string>8);
}
}
| TOKWORKSPACE WHITESPACE NUMBER workspace_name
{
int ws_num = $<number>3;
if (ws_num < 1 || ws_num > 10) {
LOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
} else {
if ($<string>4 != NULL)
workspace_set_name(&(workspaces[ws_num - 1]), $<string>4);
}
}
;
workspace_name:
/* NULL */ { $<string>$ = NULL; }
| WHITESPACE QUOTEDSTRING { $<string>$ = $<string>2; }
| WHITESPACE STR { $<string>$ = $<string>2; }
;
screen:
NUMBER { asprintf(&$<string>$, "%d", $<number>1); }
| NUMBER 'x' { asprintf(&$<string>$, "%d", $<number>1); }
| NUMBER 'x' NUMBER { asprintf(&$<string>$, "%dx%d", $<number>1, $<number>3); }
| 'x' NUMBER { asprintf(&$<string>$, "x%d", $<number>2); }
;
assign:
TOKASSIGN WHITESPACE window_class WHITESPACE optional_arrow assign_target
{
printf("assignment of %s to %d\n", $<string>3, $<number>6);
struct Assignment *new = $<assignment>6;
new->windowclass_title = strdup($<string>3);
TAILQ_INSERT_TAIL(&assignments, new, assignments);
}
;
assign_target:
NUMBER
{
struct Assignment *new = scalloc(sizeof(struct Assignment));
new->workspace = $<number>1;
new->floating = ASSIGN_FLOATING_NO;
$<assignment>$ = new;
}
| '~'
{
struct Assignment *new = scalloc(sizeof(struct Assignment));
new->floating = ASSIGN_FLOATING_ONLY;
$<assignment>$ = new;
}
| '~' NUMBER
{
struct Assignment *new = scalloc(sizeof(struct Assignment));
new->workspace = $<number>2;
new->floating = ASSIGN_FLOATING;
$<assignment>$ = new;
}
;
window_class:
QUOTEDSTRING
| STR_NG
;
optional_arrow:
/* NULL */
| TOKARROW WHITESPACE
;
ipcsocket:
TOKIPCSOCKET WHITESPACE STR
{
config.ipc_socket_path = sstrdup($<string>3);
}
;
exec:
TOKEXEC WHITESPACE STR
{
struct Autostart *new = smalloc(sizeof(struct Autostart));
new->command = sstrdup($<string>3);
TAILQ_INSERT_TAIL(&autostarts, new, autostarts);
}
;
terminal:
TOKTERMINAL WHITESPACE STR
{
config.terminal = sstrdup($<string>3);
printf("terminal %s\n", config.terminal);
}
;
font:
TOKFONT WHITESPACE STR
{
config.font = sstrdup($<string>3);
printf("font %s\n", config.font);
}
;
color:
TOKCOLOR WHITESPACE colorpixel WHITESPACE colorpixel WHITESPACE colorpixel
{
struct Colortriple *dest = $<color>1;
dest->border = $<number>3;
dest->background = $<number>5;
dest->text = $<number>7;
}
;
colorpixel:
'#' HEX { $<number>$ = get_colorpixel(global_conn, $<string>2); }
;
binding_modifiers:
/* NULL */ { $<number>$ = 0; }
| binding_modifier
| binding_modifiers '+' binding_modifier { $<number>$ = $<number>1 | $<number>3; }
| binding_modifiers '+' { $<number>$ = $<number>1; }
;
binding_modifier:
MODIFIER { $<number>$ = $<number>1; }
| TOKCONTROL { $<number>$ = BIND_CONTROL; }
| TOKSHIFT { $<number>$ = BIND_SHIFT; }
;