imv: Add bind command

5 files changed, 49 insertions, 26 deletions

diff --git a/doc/imv.1.txt b/doc/imv.1.txt
index eb00c62..0d6a2b3 100644
--- a/doc/imv.1.txt
+++ b/doc/imv.1.txt
@@ -138,6 +138,11 @@ Commands can be entered by pressing *:*. imv supports the following commands:
 	Set the background color. 'checks' for a chequerboard pattern, or specify
 	a 6-digit hexadecimal color code. Aliased to 'bg'.
 
+*bind* <keys> <commands>::
+	Binds an action to a set of key inputs. Uses the same syntax as the config
+	file, but without an equals sign between the keys and the commands. For
+	more information on syntax, see **imv**(5).
+
 Configuration
 -------------
 
diff --git a/src/commands.c b/src/commands.c
index 25ec702..e72b9e0 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -11,31 +11,6 @@ struct command {
   char* alias;
 };
 
-static char *join_str_list(struct list *list, const char *sep, size_t start)
-{
-  size_t len = 0;
-  size_t cap = 512;
-  char *buf = malloc(cap);
-  buf[0] = 0;
-
-  size_t sep_len = strlen(sep);
-  for (size_t i = start; i < list->len; ++i) {
-    size_t item_len = strlen(list->items[i]);
-    if (len + item_len + sep_len >= cap) {
-      cap *= 2;
-      buf = realloc(buf, cap);
-      assert(buf);
-    }
-
-    strncat(buf, list->items[i], cap - 1);
-    len += item_len;
-
-    strncat(buf, sep, cap - 1);
-    len += sep_len;
-  }
-  return buf;
-}
-
 struct imv_commands *imv_commands_create(void)
 {
   struct imv_commands *cmds = malloc(sizeof *cmds);
@@ -90,7 +65,7 @@ int imv_command_exec(struct imv_commands *cmds, const char *command, void *data)
           cmd->handler(args, argstr, data);
           ret = 0;
         } else if(cmd->alias) {
-          char *new_args = join_str_list(args, " ", 1);
+          char *new_args = list_to_string(args, " ", 1);
           size_t cmd_len = strlen(cmd->alias) + 1 + strlen(new_args) + 1;
           char *new_cmd = malloc(cmd_len);
           snprintf(new_cmd, cmd_len, "%s %s", cmd->alias, new_args);
diff --git a/src/imv.c b/src/imv.c
index fd2bf1f..d657862 100644
--- a/src/imv.c
+++ b/src/imv.c
@@ -196,6 +196,7 @@ static void command_toggle_playing(struct list *args, const char *argstr, void *
 static void command_set_scaling_mode(struct list *args, const char *argstr, void *data);
 static void command_set_slideshow_duration(struct list *args, const char *argstr, void *data);
 static void command_set_background(struct list *args, const char *argstr, void *data);
+static void command_bind(struct list *args, const char *argstr, void *data);
 
 static bool setup_window(struct imv *imv);
 static void consume_internal_event(struct imv *imv, struct internal_event *event);
@@ -542,6 +543,7 @@ struct imv *imv_create(void)
   imv_command_register(imv->commands, "scaling", &command_set_scaling_mode);
   imv_command_register(imv->commands, "slideshow", &command_set_slideshow_duration);
   imv_command_register(imv->commands, "background", &command_set_background);
+  imv_command_register(imv->commands, "bind", &command_bind);
 
   imv_command_alias(imv->commands, "q", "quit");
   imv_command_alias(imv->commands, "n", "next");
@@ -1682,6 +1684,18 @@ static void command_set_background(struct list *args, const char *argstr, void *
   }
 }
 
+static void command_bind(struct list *args, const char *argstr, void *data)
+{
+  (void)argstr;
+  struct imv *imv = data;
+  if (args->len >= 3) {
+    const char *keys = args->items[1];
+    char *commands = list_to_string(args, " ", 2);
+    add_bind(imv, keys, commands);
+    free(commands);
+  }
+}
+
 static void update_env_vars(struct imv *imv)
 {
   char str[64];
diff --git a/src/list.c b/src/list.c
index ba5ce87..21f2f74 100644
--- a/src/list.c
+++ b/src/list.c
@@ -1,5 +1,7 @@
 #include "list.h"
 
+#include <assert.h>
+
 struct list *list_create(void)
 {
   struct list *list = malloc(sizeof *list);
@@ -107,4 +109,29 @@ int list_find(struct list *list, int (*cmp)(const void *, const void *), const v
   return -1;
 }
 
+char *list_to_string(struct list *list, const char *sep, size_t start)
+{
+  size_t len = 0;
+  size_t cap = 512;
+  char *buf = malloc(cap);
+  buf[0] = 0;
+
+  size_t sep_len = strlen(sep);
+  for (size_t i = start; i < list->len; ++i) {
+    size_t item_len = strlen(list->items[i]);
+    if (len + item_len + sep_len >= cap) {
+      cap *= 2;
+      buf = realloc(buf, cap);
+      assert(buf);
+    }
+
+    strncat(buf, list->items[i], cap - 1);
+    len += item_len;
+
+    strncat(buf, sep, cap - 1);
+    len += sep_len;
+  }
+  return buf;
+}
+
 /* vim:set ts=2 sts=2 sw=2 et: */
diff --git a/src/list.h b/src/list.h
index abb8b85..069aea1 100644
--- a/src/list.h
+++ b/src/list.h
@@ -34,6 +34,8 @@ int list_find(
     const void *key
 );
 
+char *list_to_string(struct list *list, const char *sep, size_t start);
+
 #endif
 
 /* vim:set ts=2 sts=2 sw=2 et: */