Add remove config

src/config.c

@@ -71,6 +71,21 @@ static int add_priority(char *name, int priority)
     return found ? OK : ERR;
 }
 
+static int remove_preview(char *name)
+{
+    int found = 0;
+
+    for (size_t i = 0; i < previews->len; i++) {
+        if (strcmp(previews->buf[i].name, name) != 0)
+            continue;
+
+        vectorPreview_remove(previews, i);
+        found = 1;
+    }
+
+    return found ? OK : ERR;
+}
+
 static inline void next_token(void)
 {
     token = lexer_get_token(lexer);
@@ -142,7 +157,7 @@ static int preview_type(char **type, char **subtype, char **ext)
     return preview_type_mime(type, subtype);
 }
 
-static int new_preview(void)
+static int cmd_preview(void)
 {
     Token name = token;
     EXPECT(TOK_STR);
@@ -164,7 +179,7 @@ static int new_preview(void)
     return STAT_OK;
 }
 
-static int priority(Token tok)
+static int cmd_priority(Token tok)
 {
     Token name = token;
     EXPECT(TOK_STR);
@@ -181,6 +196,20 @@ static int priority(Token tok)
     return STAT_OK;
 }
 
+static int cmd_remove(Token tok)
+{
+    Token name = token;
+    EXPECT(TOK_STR);
+    char *name_str = get_str(name);
+
+    if (remove_preview(name_str) != OK) {
+        PARSEERROR(name, "preview '%s' not found", name_str);
+        return STAT_ERR;
+    }
+
+    return STAT_OK;
+}
+
 static int command(void)
 {
     Token cmd = token;
@@ -188,9 +217,11 @@ static int command(void)
 
     char *cmd_str = get_str(cmd);
     if (strcmp(cmd_str, "preview") == 0)
-        return new_preview();
+        return cmd_preview();
     else if (strcmp(cmd_str, "priority") == 0)
-        return priority(cmd);
+        return cmd_priority(cmd);
+    else if (strcmp(cmd_str, "remove") == 0)
+        return cmd_remove(cmd);
 
     PARSEERROR(cmd, "unknown command: %s", cmd_str);
     return STAT_ERR;

src/vector.c

@@ -86,3 +86,9 @@ void vector_resize(Vector *vec, size_t len)
 
     vec->len = len;
 }
+
+void vector_remove(Vector *vec, size_t i)
+{
+    memcpy(vec->buf + i * vec->size, vec->buf + (--vec->len) * vec->size,
+           vec->size);
+}

src/vector.h

@@ -22,6 +22,7 @@
 #define VECTOR_SIGN_APPEND(name, type)     VECTOR_SIGN_V(name, type, append, size_t, type val)
 #define VECTOR_SIGN_GET(name, type)        VECTOR_SIGN_V(name, type, get, type, size_t i)
 #define VECTOR_SIGN_RESIZE(name, type)     VECTOR_SIGN_V(name, type, resize, void, size_t len)
+#define VECTOR_SIGN_REMOVE(name, type)     VECTOR_SIGN_V(name, type, remove, void, size_t i)
 
 #define VECTOR_GEN_SOURCE_(name, type, spec)                  \
     inline spec VECTOR_SIGN_NEW(name, type)                   \
@@ -47,6 +48,10 @@
     inline spec VECTOR_SIGN_RESIZE(name, type)                \
     {                                                         \
         vector_resize((Vector *)vec, len);                    \
+    }                                                         \
+    inline spec VECTOR_SIGN_REMOVE(name, type)                \
+    {                                                         \
+        vector_remove((Vector *)vec, i);                      \
     }
 
 #define VECTOR_GEN_SOURCE(name, type) VECTOR_GEN_SOURCE_(name, type, )
@@ -61,7 +66,8 @@
     VECTOR_SIGN_APPEND_ARR(name, type); \
     VECTOR_SIGN_APPEND(name, type);     \
     VECTOR_SIGN_GET(name, type);        \
-    VECTOR_SIGN_RESIZE(name, type);
+    VECTOR_SIGN_RESIZE(name, type);     \
+    VECTOR_SIGN_REMOVE(name, type);
 
 VECTOR_TYPE(, void);
 
@@ -71,6 +77,7 @@ size_t vector_append_arr(Vector *vec, void *arr, size_t len);
 size_t vector_append(Vector *vec, void *arr);
 void *vector_get(Vector *vec, size_t i);
 void vector_resize(Vector *vec, size_t len);
+void vector_remove(Vector *vec, size_t i);
 
 VECTOR_GEN_HEADER(Char, char)