sch2fig/: support subsheet box and exported labels (WIP)

sch2fig/sch.c

@@ -255,6 +255,69 @@ static void dump_fields(struct sch_field *fields, int m[6])
 }
 
 
+/* ----- Sheet field ------------------------------------------------------- */
+
+
+static enum fig_shape decode_form(char form)
+{
+	switch (form) {
+	case 'O':
+		return fig_in;
+	case 'I':
+		return fig_out;
+	case 'B':
+		/* fall through */
+	case 'T':
+		return fig_bidir;
+	case 'U':
+		return fig_unspec;
+	default:
+		fprintf(stderr, "unknown form: \"%c\"\n", form);
+		exit(1);
+	}
+}
+
+
+static int decode_side(char side)
+{
+	switch (side) {
+	case 'L':
+		return 2;	/* left */
+	case 'B':
+		return 1;	/* up */
+	case 'R':
+		return 0;	/* right */
+	case 'T':
+		return 3;	/* down */
+	default:
+		fprintf(stderr, "unknown side: \"%c\"\n", side);
+		exit(1);
+	}
+}
+
+
+static bool parse_hsheet_field(struct sch_ctx *ctx, const char *line)
+{
+	char *s;
+	int  x, y;
+	char form, side;
+	unsigned n, dim;
+
+	if (sscanf(line, "F%d \"%m[^\"]\" %u", &n, &s, &dim) == 3) {
+		assert(n < 2);
+		return 1;	/* @@@ later */
+	}
+	if (sscanf(line, "F%d \"%m[^\"]\" %c %c %d %d %u",
+	    &n, &s, &form, &side, &x, &y, &dim) != 7)
+		return 0;
+	assert(n >= 2);
+	dwg_hlabel(x, y, s, decode_side(side), dim, decode_form(form));
+	free(s);
+
+	return 1;
+}
+
+
 /* ----- Schematics parser ------------------------------------------------- */
 
 
@@ -406,10 +469,22 @@ bool sch_parse(struct sch_ctx *ctx, const char *line)
 		}
 		break;
 	case sch_sheet:
-		if (sscanf(line, "$EndSheet%n", &n) || !n)
+		if (sscanf(line, "$EndSheet%n", &n) == 0 && n) {
+			ctx->state = sch_basic;
 			return 1;
-		ctx->state = sch_basic;
+		}
-		return 1;
+		if (sscanf(line, "S %d %d %u %u",
+		    &ctx->x, &ctx->y, &ctx->w, &ctx->h) == 4) {
+			fig_rect(ctx->x, ctx->y,
+			    ctx->x + ctx->w, ctx->y + ctx->h,
+			    COLOR_HSHEET, COLOR_NONE, LAYER_HSHEET);
+			return 1;
+		}
+		if (sscanf(line, "U %*x%n", &n) == 0 && n)
+			return 1;
+		if (parse_hsheet_field(ctx, line))
+			return 1;
+		break;
 	case sch_text:
 		ctx->state = sch_basic;
 		if (ctx->text)

sch2fig/sch.h

@@ -51,6 +51,10 @@ struct sch_ctx {
 	unsigned unit;	/* unit of current component */
 	struct sch_field *fields;
 
+	/* subsheet */
+
+	unsigned h, w;
+
 	unsigned lineno;
 };
 

sch2fig/style.h

@@ -32,6 +32,7 @@
 #define	COLOR_NOCONN		COLOR_BLUE
 #define	COLOR_GLABEL		COLOR_RED4
 #define	COLOR_HLABEL		COLOR_BROWN2	/* @@@ */
+#define	COLOR_HSHEET		COLOR_HLABEL
 #define	COLOR_LABEL		COLOR_BLACK
 #define	COLOR_FIELD		COLOR_CYAN4
 #define	COLOR_PIN_NAME		COLOR_FIELD
@@ -48,6 +49,7 @@
 #define	LAYER_FIELD		60
 #define	LAYER_PIN_NAME		LAYER_FIELD
 #define	LAYER_PIN_NUMBER	LAYER_FIELD
+#define	LAYER_HSHEET		70
 #define	LAYER_LINES		100
 #define	LAYER_COMP_DWG		120
 #define	LAYER_COMP_DWG_BG	200