implement keybind parsing

src/config.c

@@ -2,8 +2,6 @@
 #include <X11/Xlib.h>
 #include <assert.h>
 #include <fcntl.h>
-#include <limits.h>
-#include <stdint.h>
 #include <errno.h>
 #include <stdbool.h>
 #include <stddef.h>
@@ -17,11 +15,50 @@
 #include "config.h"
 #include "wm.h"
 
+static const KeybindFunctionCommand __wm_keybind_commands[] = {
+    (KeybindFunctionCommand) {
+        .command = "spawn",
+        .function = &wm_kb_spawn
+    },
+    (KeybindFunctionCommand) {
+        .command = "focus",
+        .function = &wm_kb_focus_dir
+    },
+    (KeybindFunctionCommand) {
+        .command = "move",
+        .function = &wm_kb_move_dir
+    },
+    (KeybindFunctionCommand) {
+        .command = "switch_ws",
+        .function = &wm_kb_switch_ws
+    },
+    (KeybindFunctionCommand) {
+        .command = "move_to_ws",
+        .function = &wm_kb_move_client_ws
+    },
+    (KeybindFunctionCommand) {
+        .command = "quit",
+        .function = &wm_kb_exit
+    },
+    (KeybindFunctionCommand) {
+        .command = "quit_client",
+        .function = &wm_kb_kill
+    },
+    (KeybindFunctionCommand) {
+        .command = "split_vertical",
+        .function = &wm_kb_switch_split_mode
+    },
+    (KeybindFunctionCommand) {
+        .command = "split_horizontal",
+        .function = &wm_kb_switch_split_mode
+    },
+};
+
 void wm_cfg_init_def(Config *config)
 {
     config->ms_p = 0.5;
-    config->border_col = "#222222";
+    strncpy(config->border_col, "#222222", CONFIG_COLOR_MAX);
-    config->focused_border_col = "#444444";
+    strncpy(config->focused_border_col, "#444444", CONFIG_COLOR_MAX);
     config->border_width = 2;
     config->focus_on_motion = true;
 
@@ -165,6 +202,14 @@ void wm_keybinds_init_def(Config *config)
     memcpy(config->keybinds, k, size);
 }
 
+void wm_keybinds_free(Config *config)
+{
+    for (size_t i = 0; i < config->kb_count; i++) {
+        if (config->keybinds[i].function == &wm_kb_spawn)
+            free(config->keybinds[i].args.sl);
+    }
+}
+
 void wm_configfile_init(ConfigFile *config, const char *filename)
 {
     assert(config);
@@ -175,23 +220,23 @@ void wm_configfile_init(ConfigFile *config, const char *filename)
     ConfigCommand commands[] = {
         (ConfigCommand) {.string = "border_color", .arg_count = 1,
                          .cfg_var_offset[0] = offsetof(Config, border_col),
-                         .argc = 0},
+                         .argc = 0, .arg_type = TYPE_STRING},
 
         (ConfigCommand) {.string = "focused_border_color", .arg_count = 1,
                          .cfg_var_offset[0] = offsetof(Config, focused_border_col),
-                         .argc = 0},
+                         .argc = 0, .arg_type = TYPE_STRING},
 
         (ConfigCommand) {.string = "border_width", .arg_count = 1,
                          .cfg_var_offset[0] = offsetof(Config, border_width),
-                         .argc = 0},
+                         .argc = 0, .arg_type = TYPE_UNSIGNED_INTEGER},
 
         (ConfigCommand) {.string = "keybind", .arg_count = 0,
                          .cfg_var_offset[0] = -1,
-                         .argc = 0},
+                         .argc = 0, .arg_type = TYPE_KEYBIND},
 
         (ConfigCommand) {.string = "focus_on_motion", .arg_count = 1,
                          .cfg_var_offset[0] = offsetof(Config, focus_on_motion),
-                         .argc = 0},
+                         .argc = 0, .arg_type = TYPE_BOOL},
     };
 
     config->command_count = sizeof(commands) / sizeof (commands[0]);
@@ -210,6 +255,8 @@ void wm_configfile_free(ConfigFile *config)
     for (size_t i = 0; i < config->command_count; i++) {
         wm_configcommand_free(&config->available_commands[i]);
     }
+
+    free(config->available_commands);
 }
 
 void wm_configfile_read(ConfigFile *cfile, Config *config)
@@ -253,31 +300,31 @@ void wm_config_apply_command(Config *config, ConfigCommand *command)
     switch (command->arg_type) {
     case TYPE_INTEGER:
         for (size_t i = 0; i < command->argc; i++) {
-            *(int*)((char*)config + (command->cfg_var_offset[i])) = command->args[i].i;
+            *(int*)(((char*)config) + (command->cfg_var_offset[i])) = command->args[i].i;
         }
         return;
     case TYPE_UNSIGNED_INTEGER:
         for (size_t i = 0; i < command->argc; i++) {
-            *(unsigned int*)((char*)config + (command->cfg_var_offset[i])) = command->args[i].ui;
+            *(unsigned int*)(((char*)config) + (command->cfg_var_offset[i])) = command->args[i].ui;
         }
         return;
     case TYPE_BOOL:
         for (size_t i = 0; i < command->argc; i++) {
-            *(bool*)((char*)config + (command->cfg_var_offset[i])) = command->args[i].i;
+            *(bool*)(((char*)config) + (command->cfg_var_offset[i])) = command->args[i].i;
         }
         return;
     case TYPE_KEYBIND:
-        // TODO
+        wm_config_replace_keybind(config, &command->keybind);
-        wm_config_parse_bind_command(command);
+        return;
     case TYPE_STRING:
         for (size_t i = 0; i < command->argc; i++) {
             size_t len =  strnlen(command->argv[i], CONFIG_ARGLEN_MAX);
-            memcpy((char*)(config + (command->cfg_var_offset)[i]), command->argv[i], len);
+            memcpy(((char*)(config) + (command->cfg_var_offset)[i]), command->argv[i], len);
         }
         return;
     case TYPE_FLOAT:
         for (size_t i = 0; i < command->argc; i++) {
-            *(float*)((char*)config + (command->cfg_var_offset[i])) = atof(command->argv[i]);
+            *(float*)(((char*)config) + (command->cfg_var_offset[i])) = atof(command->argv[i]);
         }
         return;
     }
@@ -298,6 +345,9 @@ ParserResult wm_configfile_parse_line(const ConfigFile *cfile, Config *config,
     if (line[0] == '\n')
         return (ParserResult) {.success = true, .message = ""};
 
+    if (!token)
+        return (ParserResult) {.success = true, .message = ""};
+
     // try to match command
     for (size_t i = 0; i < cfile->command_count; i++) {
         if (strncmp(cfile->available_commands[i].string, token,
@@ -333,12 +383,15 @@ ParserResult wm_configfile_parse_line(const ConfigFile *cfile, Config *config,
                     CONFIG_ARGC_MAX);
             }
 
-            if (command->argc > command->arg_count) {
+            if (command->argc > command->arg_count && command->arg_type != TYPE_KEYBIND) {
                 PARSER_RETURN(result, false, "Too many arguments to command %s\n",
                               command->string);
             }
 
             strncpy(command->argv[command->argc-1], token, CONFIG_ARGLEN_MAX);
+            char *arg = command->argv[command->argc-1];
+            for (size_t i = 0; i < strnlen(arg, CONFIG_ARGLEN_MAX); i++)
+                if (arg[i] == '\n') arg[i] = '\0';
         }
 
         // end of args
@@ -419,8 +472,8 @@ void wm_configcommand_argv_parse(ConfigCommand *command)
         }
         return;
     case TYPE_KEYBIND:
-        // todo
+        command->keybind = wm_config_parse_bind_command(command);
-        wm_config_parse_bind_command(command);
+        return;
     case TYPE_STRING:
         for (size_t i = 0; i < command->argc; i++) {
             size_t len = strnlen(command->argv[i], CONFIG_ARGLEN_MAX);
@@ -474,6 +527,99 @@ bool atobool(char *arr)
     return false;
 }
 
+Arg wm_keybind_argv_to_args(Keybind kb, ConfigCommand command)
+{
+    DEBUG_PRINT("%s\n", __func__);
+    Arg ret;
+
+    if (kb.function == &wm_kb_spawn) {
+        ret.sl = calloc(command.argc - 2, sizeof(char*));
+        for (size_t i = 2; i < command.argc; i++) {
+            ret.sl[i] = calloc(CONFIG_ARGLEN_MAX, 1);
+            strncpy(ret.sl[i], command.argv[i], CONFIG_ARGLEN_MAX);
+        }
+
+        return ret;
+    }
+
+    if (kb.function == &wm_kb_focus_dir) {
+        assert(command.argc == 3);
+        ret.i = wm_string_to_direction(command.argv[command.argc - 1]);
+
+        return ret;
+    }
+
+    if (kb.function == &wm_kb_move_dir) {
+        assert(command.argc == 3);
+        ret.i = wm_string_to_direction(command.argv[command.argc - 1]);
+
+        return ret;
+    }
+
+    if (kb.function == &wm_kb_switch_ws) {
+        assert(command.argc == 3);
+        ret.i = atoi(command.argv[command.argc - 1]);
+
+        return ret;
+    }
+
+    if (kb.function == &wm_kb_move_client_ws) {
+        assert(command.argc == 3);
+        ret.i = atoi(command.argv[command.argc - 1]);
+
+        return ret;
+    }
+
+    if (kb.function == &wm_kb_switch_split_mode) {
+        // TODO
+    }
+
+    assert(false);
+}
+
+int wm_string_to_direction(const char *str)
+{
+    int ret;
+    char lower[CONFIG_ARGLEN_MAX];
+    strncpy(lower, str, CONFIG_ARGLEN_MAX);
+
+    for (char *c = lower; *c; c++) *c = tolower(*c);
+
+    ret = strncmp(lower, "right", CONFIG_ARGLEN_MAX);
+    if (ret == 0) return RIGHT;
+
+    ret = strncmp(lower, "left", CONFIG_ARGLEN_MAX);
+    if (ret == 0) return LEFT;
+
+    ret = strncmp(lower, "up", CONFIG_ARGLEN_MAX);
+    if (ret == 0) return UP;
+
+    ret = strncmp(lower, "down", CONFIG_ARGLEN_MAX);
+    if (ret == 0) return DOWN;
+
+    fprintf(stderr, "wm: encountered invalid direction \"%s\"\n. exiting.",
+            str);
+    abort();
+}
+
+KeybindFunction wm_str_to_keybindfunction(const char* str)
+{
+    DEBUG_PRINT("%s %s\n", __func__, str);
+    char lower[CONFIG_ARGLEN_MAX];
+    strncpy(lower, str, CONFIG_ARGLEN_MAX);
+
+    for (char *c = lower; *c; c++) *c = tolower(*c);
+
+    for (size_t i = 0; i < sizeof(__wm_keybind_commands) / sizeof(__wm_keybind_commands[0]); i++) {
+        if (strncmp(lower, __wm_keybind_commands[i].command, CONFIG_ARGLEN_MAX) == 0)
+            return __wm_keybind_commands[i].function;
+    }
+
+    fprintf(stderr, "wm: encountered invalid keybind command \"%s\"\n. exiting.",
+            str);
+    abort();
+}
+
 unsigned int wm_string_to_mask(const char* str)
 {
     int ret;
@@ -504,12 +650,12 @@ unsigned int wm_string_to_mask(const char* str)
     ret = strncmp(str, "Super", CONFIG_ARGLEN_MAX);
     if (ret == 0) return Mod4Mask;
 
-    fprintf(stderr, "wm: encountered invalid modifier token %s\n. exiting.",
+    fprintf(stderr, "wm: encountered invalid modifier token \"%s\"\n. exiting.",
             str);
     abort();
 }
 
-KeySym* wm_keybind_str_to_mask_keysym(const char* kb_argv)
+KeySym* wm_keybind_string_to_mask_keysym(const char* kb_argv)
 {
     KeySym *ret = calloc(2, sizeof(KeySym));
     char* str = strdup(kb_argv);
@@ -531,7 +677,7 @@ KeySym* wm_keybind_str_to_mask_keysym(const char* kb_argv)
         token = strtok(NULL, "+");
     }
 
-    DEBUG_PRINT("str: %s token count: %d\n", kb_argv, token_count);
+    DEBUG_PRINT("str: %s, str[0]: %d, token count: %d\n", kb_argv, kb_argv[0], token_count);
 
     ret[0] = wm_string_to_mask(tokens[0]);
 
@@ -541,7 +687,7 @@ KeySym* wm_keybind_str_to_mask_keysym(const char* kb_argv)
 
     KeySym keysym = XStringToKeysym(tokens[token_count - 1]);
     if (keysym == NoSymbol) {
-        fprintf(stderr, "wm: encountered invalid keybind token %s\n. exiting.",
+        fprintf(stderr, "wm: encountered invalid keybind token \"%s\"\n. exiting.",
                 tokens[token_count-1]);
         abort();
     }
@@ -553,8 +699,27 @@ KeySym* wm_keybind_str_to_mask_keysym(const char* kb_argv)
     return ret;
 }
 
-// TODO
 Keybind wm_config_parse_bind_command(ConfigCommand *command)
 {
+    DEBUG_PRINT("%s\n", __func__);
+    Keybind ret;
+    KeySym *keysyms = wm_keybind_string_to_mask_keysym(command->argv[0]);
 
+    ret.mask = keysyms[0];
+    ret.keysym = keysyms[1];
+    free(keysyms);
+
+    ret.function = wm_str_to_keybindfunction(command->argv[1]);
+    ret.args = wm_keybind_argv_to_args(ret, *command);
+
+    return ret;
+}
+
+void wm_config_replace_keybind(Config *config, const Keybind *keybind)
+{
+    for (size_t i = 0; i < config->kb_count; i++)
+        if (config->keybinds[i].function == keybind->function) {
+            config->keybinds[i] = *keybind;
+            return;
+        }
 }

src/config.h

@@ -11,6 +11,7 @@
 #define CONFIG_PARSERRESULT_MAX 1024
 #define CONFIG_ARGC_MAX 16
 #define CONFIG_ARGLEN_MAX 256
+#define CONFIG_COLOR_MAX 16
 
 #define PARSER_RETURN(result, _success, fmt, ...)        \
     do { (result).success = (_success);                  \
@@ -42,6 +43,11 @@ struct Keybind {
     Arg args;
 };
 
+typedef struct {
+    const char command[CONFIG_ARGLEN_MAX];
+    const KeybindFunction function;
+} KeybindFunctionCommand;
+
 typedef enum {
     TYPE_INTEGER,
     TYPE_UNSIGNED_INTEGER,
@@ -64,6 +70,7 @@ typedef struct {
     size_t argc;
     char **argv;
     Arg *args;
+    Keybind keybind;
 } ConfigCommand;
 
 typedef struct {
@@ -74,8 +81,8 @@ typedef struct {
 
 typedef struct {
     float ms_p;
-    char *border_col;
+    char border_col[CONFIG_COLOR_MAX];
-    char *focused_border_col;
+    char focused_border_col[CONFIG_COLOR_MAX];
     unsigned int border_width;
     Keybind *keybinds;
     int kb_count;
@@ -85,6 +92,7 @@ typedef struct {
 
 void wm_cfg_init_def(Config *config);
 void wm_keybinds_init_def(Config *config);
+void wm_keybinds_free(Config *config);
 void wm_configfile_init(ConfigFile *config, const char *path);
 void wm_configfile_free(ConfigFile *config);
 void wm_configfile_read(ConfigFile *cfile, Config *config);
@@ -97,13 +105,23 @@ void wm_configcommand_argv_parse(ConfigCommand *command);
 void wm_configcommand_free(ConfigCommand *command);
 bool atobool(char *arr);
 
+Arg wm_keybind_argv_to_args(Keybind kb, ConfigCommand command);
+
+int wm_string_to_direction(const char *str);
+
+KeybindFunction wm_string_to_keybindfunction(const char* str);
+
 /* Converts string to Key mask (see X.h:218-228). */
 unsigned int wm_string_to_mask(const char* str);
 
 /* The first element is the mask, the second element is the
  * key. The returned array needs to be freed. */
-KeySym* wm_keybind_str_to_mask_keysym(const char* kb_argv);
+KeySym* wm_keybind_string_to_mask_keysym(const char* kb_argv);
 
 Keybind wm_config_parse_bind_command(ConfigCommand *command);
 
+/* Finds a keybind matching the function of the keybind parameter, and
+ * replaces it. */
+void wm_config_replace_keybind(Config *config, const Keybind *keybind);
+
 #endif // CONFIG_H