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#include <ctype.h>
#include <linux/limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/keysym.h>
#include <X11/keysymdef.h>
#include "parser.h"
static struct { const char *n; void (*fn)(void); } call_table[] = {
{"close_window", close_focused},
{"decrease_gaps", dec_gaps},
{"focus_next", focus_next},
{"focus_previous", focus_prev},
{"increase_gaps", inc_gaps},
{"master_next", move_master_next},
{"master_previous", move_master_prev},
{"quit", quit},
{"reload_config", reload_config},
{"master_increase", resize_master_add},
{"master_decrease", resize_master_sub},
{"floating", toggle_floating},
{"global_floating", toggle_floating_global},
{"fullscreen", toggle_fullscreen},
{ NULL, NULL }
};
void
handler(char *command, char *arg,
unsigned int mods, KeySym keysym,
Action action, Bool is_func,
Config *user_config)
{
if (strcmp(command, "bind") == 0) {
if (is_func) {
/* look up function by name */
for (unsigned long i = 0; i < LENGTH(call_table); ++i) {
if (strcmp(arg, call_table[i].n) == 0) {
user_config->binds[user_config->bindsn].action.fn = call_table[i].fn;
user_config->binds[user_config->bindsn].is_func = True;
user_config->binds[user_config->bindsn].mods = mods;
user_config->binds[user_config->bindsn].keysym = keysym;
++user_config->bindsn;
return;
}
}
fprintf(stderr, "sxwmrc: unknown function call: %s\n", arg);
} else {
user_config->binds[user_config->bindsn].action.cmd = action.cmd;
user_config->binds[user_config->bindsn].is_func = False;
user_config->binds[user_config->bindsn].mods = mods;
user_config->binds[user_config->bindsn].keysym = keysym;
++user_config->bindsn;
}
return;
}
/* TODO USE A TABLE */
if (strcmp(command, "gaps") == 0) user_config->gaps = atoi(arg);
else if (strcmp(command, "border_width") == 0) user_config->border_width = atoi(arg);
else if (strcmp(command, "focus_border_colour") == 0) user_config->border_foc_col = parse_col(arg);
else if (strcmp(command, "unfocus_border_colour")== 0) user_config->border_ufoc_col = parse_col(arg);
else if (strcmp(command, "swap_border_colour") == 0) user_config->border_swap_col = parse_col(arg);
else if (strcmp(command, "master_coverage") == 0) user_config->master_width = atoi(arg);
else if (strcmp(command, "resize_master_amount") == 0) user_config->resize_master_amt = atoi(arg);
else if (strcmp(command, "snap_distance") == 0) user_config->snap_distance = atoi(arg);
else
fprintf(stderr, "sxwmrc: unknown command: %s\n", command);
}
void
parser(Config *user_config)
{
char *home = getenv("HOME");
if (!home) {
fputs("sxwmrc: HOME environment variable not set\n", stderr);
return;
}
char sxwmrc[PATH_MAX];
snprintf(sxwmrc, sizeof(sxwmrc), "%s/.config/sxwmrc", home);
FILE *f = fopen(sxwmrc, "r");
if (!f) {
fprintf(stderr, "sxwmrc: file not found: %s\n", sxwmrc);
return;
}
char line[512];
while (fgets(line, sizeof(line), f)) {
char *s = strip(line);
if (!*s || *s == '#' || *s == '\n')
continue;
char *c = strchr(s, ':');
if (!c) {
fprintf(stderr, "sxwmrc: invalid line (no colon): %s\n", s);
continue;
}
*c = '\0';
char *key = strip(s);
char *val = strip(c+1);
if (strcmp(key, "bind") == 0) {
char *d = strchr(val, ':');
if (!d) {
fprintf(stderr, "sxwmrc: invalid bind (no action): %s\n", val);
continue;
}
*d = '\0';
char *combo = strip(val);
char *act = strip(d+1);
if (*combo == '[') combo++;
size_t L = strlen(combo);
if (L && combo[L-1] == ']') combo[L-1] = '\0';
unsigned int mods = 0;
KeySym ks = 0;
char part[64];
char *tok = strtok(combo, "+");
while (tok) {
char *p = strip(tok);
for (size_t i=0; p[i]; i++) p[i] = tolower((unsigned char)p[i]);
if (strcmp(p,"mod") == 0) mods |= user_config->modkey;
else if (strcmp(p,"shift")==0) mods |= ShiftMask;
else if (strcmp(p,"ctrl")==0) mods |= ControlMask;
else if (strcmp(p,"alt")==0) mods |= Mod1Mask;
else {
strncpy(part, tok, sizeof(part)-1);
part[sizeof(part)-1] = '\0';
ks = parse_keysym(strip(part));
}
tok = strtok(NULL, "+");
}
Action a = { .cmd = NULL };
Bool is_fn = False;
if (*act == '"') {
char *cmdstr = strip_quotes(act);
a.cmd = build_argv(cmdstr);
} else {
is_fn = True;
}
handler(key, act, mods, ks, a, is_fn, user_config);
} else {
handler(key, val, 0, 0, (Action){0}, False, user_config);
}
}
fclose(f);
}
char *
strip(char *str)
{
while (*str == ' ' || *str == '\t') str++;
char *end = str + strlen(str) - 1;
while (end > str && (*end==' '||*end=='\t'||*end=='\r'||*end=='\n'))
*end-- = '\0';
return str;
}
char *
strip_quotes(char *s)
{
if (*s == '"') s++;
size_t n = strlen(s);
if (n && s[n-1] == '"') s[n-1] = '\0';
return s;
}
unsigned int
parse_mods(const char *mods, Config *user_config)
{
unsigned int m = 0;
if (strstr(mods, "mod")) m |= user_config->modkey;
if (strstr(mods, "shift")) m |= ShiftMask;
if (strstr(mods, "ctrl")) m |= ControlMask;
if (strstr(mods, "alt")) m |= Mod1Mask;
return m;
}
KeySym
parse_keysym(const char *key)
{
KeySym ks = XStringToKeysym(key);
if (ks == NoSymbol) {
fprintf(stderr, "sxwmrc: unknown keysym: %s\n", key);
return 0;
}
return ks;
}
static const char **
build_argv(char *cmdline)
{
char **argv = calloc(MAX_ARGS+1, sizeof(char *));
if (!argv) return NULL;
int argc = 0;
char *tok = strtok(cmdline, " \t");
while (tok && argc < MAX_ARGS) {
argv[argc++] = tok;
tok = strtok(NULL, " \t");
}
argv[argc] = NULL;
return (const char **)argv;
}
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