conf: make cursor's default style configurable

config.c

@@ -181,12 +181,39 @@ parse_section_colors(const char *key, const char *value, struct config *conf,
     return true;
 }
 
+static bool
+parse_section_cursor(const char *key, const char *value, struct config *conf,
+                     const char *path, unsigned lineno)
+{
+    if (strcmp(key, "style") == 0) {
+        if (strcmp(value, "block") == 0)
+            conf->cursor.style = CURSOR_BLOCK;
+        else if (strcmp(value, "bar") == 0)
+            conf->cursor.style = CURSOR_BAR;
+        else if (strcmp(value, "underline") == 0)
+            conf->cursor.style = CURSOR_UNDERLINE;
+
+        else {
+            LOG_ERR("%s:%d: invalid 'style': %s", path, lineno, value);
+            return false;
+        }
+    }
+
+    else {
+        LOG_ERR("%s:%d: invalid key: %s", path, lineno, key);
+        return false;
+    }
+
+    return true;
+}
+
 static bool
 parse_config_file(FILE *f, struct config *conf, const char *path)
 {
     enum section {
         SECTION_MAIN,
         SECTION_COLORS,
+        SECTION_CURSOR,
     } section = SECTION_MAIN;
 
     /* Function pointer, called for each key/value line */
@@ -198,12 +225,14 @@ parse_config_file(FILE *f, struct config *conf, const char *path)
     static const parser_fun_t section_parser_map[] = {
         [SECTION_MAIN] = &parse_section_main,
         [SECTION_COLORS] = &parse_section_colors,
+        [SECTION_CURSOR] = &parse_section_cursor,
     };
 
 #if defined(_DEBUG) && defined(LOG_ENABLE_DBG) && LOG_ENABLE_DBG
     static const char *const section_names[] = {
         [SECTION_MAIN] = "main",
         [SECTION_COLORS] = "colors",
+        [SECTION_CURSOR] = "cursor",
     };
 #endif
 
@@ -257,6 +286,8 @@ parse_config_file(FILE *f, struct config *conf, const char *path)
 
             if (strcmp(&line[1], "colors") == 0)
                 section = SECTION_COLORS;
+            else if (strcmp(&line[1], "cursor") == 0)
+                section = SECTION_CURSOR;
             else {
                 LOG_ERR("%s:%d: invalid section name: %s", path, lineno, &line[1]);
                 goto err;
@@ -354,6 +385,10 @@ config_load(struct config *conf)
                 default_bright[7],
             },
         },
+
+        .cursor = {
+            .style = CURSOR_BLOCK,
+        },
     };
 
     char *path = get_config_path();

config.h

@@ -3,6 +3,8 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+#include "terminal.h"
+
 struct config {
     char *term;
     char *shell;
@@ -14,6 +16,10 @@ struct config {
         uint32_t regular[8];
         uint32_t bright[8];
     } colors;
+
+    struct {
+        enum cursor_style style;
+    } cursor;
 };
 
 bool config_load(struct config *conf);

footrc

@@ -2,6 +2,9 @@
 # shell=/usr/bin/zsh
 # font=monospace
 
+[cursor]
+# style=block
+
 [colors]
 # foreground=dcdccc
 # background=111111

main.c

@@ -371,6 +371,7 @@ main(int argc, char *const *argv)
                 conf.colors.bright[7],
             },
         },
+        .cursor_style = conf.cursor.style,
         .selection = {
             .start = {-1, -1},
             .end = {-1, -1},

terminal.h

@@ -222,6 +222,8 @@ struct font {
     struct glyph_cache glyph_cache[256];
 };
 
+enum cursor_style { CURSOR_BLOCK, CURSOR_UNDERLINE, CURSOR_BAR };
+
 struct terminal {
     pid_t slave;
     int ptmx;
@@ -291,7 +293,7 @@ struct terminal {
     struct coord cursor;
     struct coord saved_cursor;
     struct coord alt_saved_cursor;
-    enum { CURSOR_BLOCK, CURSOR_UNDERLINE, CURSOR_BAR } cursor_style;
+    enum cursor_style cursor_style;
     bool cursor_blinking;
 
     uint32_t input_serial;