Add ability to change previews priority in config

previews.h

@@ -10,7 +10,7 @@
  */
 
 #define PNAME(n)          prev_scr_##n##_sh
-#define PP(e, t, s, n, p) { #n, e, t, s, PNAME(n), p, LEN(PNAME(n)) }
+#define PP(e, t, s, n, o) { #n, e, t, s, PNAME(n), o, 0, LEN(PNAME(n)) }
 #define PR(e, t, s, n)    PP(e, t, s, n, 0)
 
 Preview b_previews[] = {

src/config.c

@@ -50,12 +50,22 @@ static void add_preview(char *name, char *script, char *type, char *subtype,
         .type = type,
         .subtype = subtype,
         .ext = ext,
-        .priority = 1 /* custom previews are always prioritized */
+        .order = 1 /* custom previews are always prioritized */
     };
 
     vectorPreview_append(previews, p);
 }
 
+static void add_priority(char *name, int priority)
+{
+    for (size_t i = 0; i < previews->len; i++) {
+        if (strcmp(previews->buf[i].name, name) != 0)
+            continue;
+
+        previews->buf[i].priority = priority;
+    }
+}
+
 static inline void next_token(void)
 {
     token = lexer_get_token(lexer);
@@ -151,8 +161,15 @@ static int new_preview(void)
 
 static int priority(Token tok)
 {
-    PARSEERROR(tok, "priority is not supported yet");
+    Token name = token;
-    return STAT_ERR;
+    EXPECT(TOK_STR);
+
+    Token number = token;
+    EXPECT(TOK_INT);
+
+    add_priority(get_str(name), number.val.i);
+
+    return STAT_OK;
 }
 
 static int command(void)

src/lexer.c

@@ -234,6 +234,11 @@ static inline Token read_new_line(Lexer *ctx)
     return tok;
 }
 
+static inline int issymbol(int c)
+{
+    return isalnum(c) || c == '_' || c == '-';
+}
+
 static inline Token read_symbol(Lexer *ctx)
 {
     char c = peek_char(ctx);
@@ -242,7 +247,7 @@ static inline Token read_symbol(Lexer *ctx)
         return get_tok(ctx, TOK_NULL);
 
     size_t p = get_text_buf_len(ctx);
-    read_while(ctx, isalnum, 1);
+    read_while(ctx, issymbol, 1);
 
     Token tok = get_tok(ctx, TOK_STR);
     tok.val.sp = p;
@@ -250,11 +255,16 @@ static inline Token read_symbol(Lexer *ctx)
     return tok;
 }
 
-static inline Token read_digit(Lexer *ctx)
+static inline Token read_int(Lexer *ctx)
 {
-    char c = peek_char(ctx);
+    int positive = 1;
 
-    if (!isdigit(c))
+    if (peek_char(ctx) == '-') {
+        positive = 0;
+        next_char(ctx);
+    }
+
+    if (!isdigit(peek_char(ctx)))
         return get_tok(ctx, TOK_NULL);
 
     size_t len = get_text_buf_len(ctx);
@@ -263,6 +273,9 @@ static inline Token read_digit(Lexer *ctx)
     int i = atoi(get_text_buf_at(ctx, len));
     set_text_buf_len(ctx, len);
 
+    if (!positive)
+        i *= -1;
+
     Token tok = get_tok(ctx, TOK_INT);
     tok.val.i = i;
 
@@ -366,7 +379,7 @@ Token lexer_get_token(Lexer *ctx)
 
     ATTEMPT_READ(ctx, read_new_line);
     ATTEMPT_READ(ctx, read_symbol);
-    ATTEMPT_READ(ctx, read_digit);
+    ATTEMPT_READ(ctx, read_int);
     ATTEMPT_READ(ctx, read_block);
 
     PARSEERROR((*ctx), "cannot handle character: %c", peek_char(ctx));

src/preview.c

@@ -25,7 +25,7 @@ static int cmp_previews(const void *p1, const void *p2)
 
     int i;
 
-    if ((i = pr2->priority - pr1->priority) != 0)
+    if ((i = pr2->order - pr1->order) != 0)
         return i;
 
     if ((i = strcmpnull(pr1->ext, pr2->ext)) != 0)
@@ -37,6 +37,9 @@ static int cmp_previews(const void *p1, const void *p2)
     if ((i = strcmpnull(pr1->subtype, pr2->subtype)) != 0)
         return i;
 
+    if ((i = pr2->priority - pr1->priority) != 0)
+        return i;
+
     return i;
 }
 

src/preview.h

@@ -9,7 +9,7 @@
 
 typedef struct {
     char *name, *ext, *type, *subtype, *script;
-    int priority;
+    int order, priority;
     size_t script_len;
 } Preview;