162 lines
4.1 KiB
Plaintext
162 lines
4.1 KiB
Plaintext
%{
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/*
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* vim:ts=4:sw=4:expandtab
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*
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <X11/Xlib.h>
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extern Display *dpy;
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struct context {
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int line_number;
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char *line_copy;
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char *compact_error;
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/* These are the same as in YYLTYPE */
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int first_column;
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int last_column;
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char *result;
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};
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typedef struct yy_buffer_state *YY_BUFFER_STATE;
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extern int yylex(struct context *context);
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extern int yyparse(void);
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extern FILE *yyin;
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YY_BUFFER_STATE yy_scan_string(const char *);
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static struct context *context;
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/* We don’t need yydebug for now, as we got decent error messages using
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* yyerror(). Should you ever want to extend the parser, it might be handy
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* to just comment it in again, so it stays here. */
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//int yydebug = 1;
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void yyerror(const char *error_message) {
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fprintf(stderr, "\n");
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fprintf(stderr, "CONFIG: %s\n", error_message);
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fprintf(stderr, "CONFIG: line %d:\n",
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context->line_number);
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fprintf(stderr, "CONFIG: %s\n", context->line_copy);
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fprintf(stderr, "CONFIG: ");
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for (int c = 1; c <= context->last_column; c++)
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if (c >= context->first_column)
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fprintf(stderr, "^");
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else fprintf(stderr, " ");
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fprintf(stderr, "\n");
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fprintf(stderr, "\n");
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}
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int yywrap() {
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return 1;
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}
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char *rewrite_binding(const char *bindingline) {
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char *result = NULL;
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context = calloc(sizeof(struct context), 1);
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yy_scan_string(bindingline);
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if (yyparse() != 0) {
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fprintf(stderr, "Could not parse configfile\n");
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exit(1);
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}
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result = context->result;
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if (context->line_copy)
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free(context->line_copy);
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free(context);
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return result;
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}
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/* XXX: does not work for combinations of modifiers yet */
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static char *modifier_to_string(int modifiers) {
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//printf("should convert %d to string\n", modifiers);
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if (modifiers == (1 << 3))
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return strdup("$mod+");
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else if (modifiers == ((1 << 3) | (1 << 0)))
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return strdup("$mod+Shift+");
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else if (modifiers == (1 << 9))
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return strdup("$mod+");
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else if (modifiers == ((1 << 9) | (1 << 0)))
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return strdup("$mod+Shift+");
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else if (modifiers == (1 << 0))
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return strdup("Shift+");
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else return strdup("");
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}
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%}
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%error-verbose
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%lex-param { struct context *context }
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%union {
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int number;
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char *string;
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}
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%token <number>NUMBER "<number>"
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%token <string>STR "<string>"
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%token TOKBINDCODE
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%token TOKMODVAR "$mod"
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%token MODIFIER "<modifier>"
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%token TOKCONTROL "control"
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%token TOKSHIFT "shift"
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%token WHITESPACE "<whitespace>"
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%%
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lines: /* empty */
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| lines WHITESPACE bindcode
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| lines error
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| lines bindcode
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;
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bindcode:
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TOKBINDCODE WHITESPACE binding_modifiers NUMBER WHITESPACE STR
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{
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//printf("\tFound keycode binding mod%d with key %d and command %s\n", $<number>3, $4, $<string>6);
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int level = 0;
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if (($<number>3 & (1 << 0))) {
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/* When shift is included, we really need to use the second-level
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* symbol (upper-case). The lower-case symbol could be on a
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* different key than the upper-case one (unlikely for letters, but
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* more likely for special characters). */
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level = 1;
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}
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KeySym sym = XKeycodeToKeysym(dpy, $4, level);
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char *str = XKeysymToString(sym);
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char *modifiers = modifier_to_string($<number>3);
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// TODO: modifier to string
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asprintf(&(context->result), "bindsym %s%s %s\n", modifiers, str, $<string>6);
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free(modifiers);
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}
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;
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binding_modifiers:
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/* NULL */ { $<number>$ = 0; }
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| binding_modifier
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| binding_modifiers '+' binding_modifier { $<number>$ = $<number>1 | $<number>3; }
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| binding_modifiers '+' { $<number>$ = $<number>1; }
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;
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binding_modifier:
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MODIFIER { $<number>$ = $<number>1; }
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| TOKMODVAR { $<number>$ = $<number>1; }
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| TOKCONTROL { $<number>$ = (1 << 2); }
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| TOKSHIFT { $<number>$ = (1 << 0); }
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;
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