b2/: add parsing of KiCad eeschema BOMs (option -b)

b2/Makefile

@@ -13,7 +13,7 @@ SHELL = /bin/bash
 
 CFLAGS = -g -Wall $(shell pkg-config --cflags glib-2.0)
 SLOPPY = -Wno-unused -Wno-implicit-function-declaration
-OBJS = boom.o chr.o comp.o db.o dump.o eval.o param.o relop.o \
+OBJS = bom.o boom.o chr.o comp.o db.o dump.o eval.o param.o relop.o \
        subex.o subst.o util.o \
        vstring.o lex.yy.o y.tab.o
 LDLIBS = -lfl $(shell pkg-config --libs glib-2.0)

b2/bom.c

@@ -0,0 +1,71 @@
+/*
+ * bom.c - BOM data
+ *
+ * Copyright 2012 by Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "util.h"
+#include "lang.h"
+#include "bom.h"
+
+
+struct bom *bom = NULL;
+int n_bom = 0;
+
+
+struct bom *bom_parse_line(const char *s)
+{
+	struct bom *b;
+	const char *t;
+	char *f;
+
+	bom = realloc(bom, sizeof(struct bom)*(n_bom+1));
+	if (!bom)
+		abort();
+	b = bom+n_bom++;
+
+	if (*s++ != '|')
+		abort();
+	while (*s == ' ' || *s == '\t')
+		s++;
+	for (t = s+1; *t && !isspace(*t); t++);
+	if (!*t)
+		yyerror("invalid BOM record (1)\n");
+	b->ref = stralloc_n(s, t-s);
+	b->sym = NULL;
+	b->fields = NULL;
+	b->n_fields = 0;
+
+	for (s = t; *t && *t != '\n'; s = t+1) {
+		while (*s == ' ' || *s == '\t')
+			s++;
+		if (*s == ';' || *s == '\n') {
+			f = NULL;
+			t = s;
+		} else {
+			for (t = s+1; *t && *t != ';' && !isspace(*t); t++);
+			f = stralloc_n(s, t-s);
+			while (*t == ' ' || *t == '\t')
+				t++;
+		}
+
+		/* VAL, FP, F1 ... */
+		b->fields =
+		    realloc(b->fields, sizeof(const char *)*(b->n_fields+1));
+		if (!b->fields)
+			abort();
+		b->fields[b->n_fields] = f ? unique(f) : unique("");
+		b->n_fields++;
+		free(f);
+	}
+	return b;
+}

b2/bom.h

@@ -0,0 +1,34 @@
+/*
+ * bom.h - BOM data
+ *
+ * Copyright 2012 by Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#ifndef BOM_H
+#define	BOM_H
+
+#include "param.h"
+
+
+struct bom {
+	const char *ref;	/* component reference */
+	const char *sym;	/* symbol */
+	const char **fields;	/* fields */
+	int n_fields;
+	const struct param *vars; /* variables (before conversion) */
+	const struct bom *next;
+};
+
+extern struct bom *bom;
+extern int n_bom;
+
+
+struct bom *bom_parse_line(const char *line);
+
+#endif /* !BOM_H */

b2/boom.c

@@ -82,6 +82,7 @@ static void usage(const char *name)
 "  -x  currency exchange\n"
 "  -p  providers\n"
 "  -s  substitutions\n"
+"  -b  KiCad eeschema BOM\n"
 "  -q var=value ...  run substitutions with the specified inputs\n"
 "  -Q var=value ...  run substitutions and then do parametric search\n"
     , name);
@@ -107,6 +108,8 @@ int main(int argc, char **argv)
 				process = parse_providers;
 			else if (!strcmp(argv[i], "-s"))
 				process = parse_substitutions;
+			else if (!strcmp(argv[i], "-b"))
+				process = parse_kicad_bom;
 			else if (!strcmp(argv[i], "-q"))
 				process = add_var;
 			else if (!strcmp(argv[i], "-Q")) {

b2/lang.h

@@ -28,6 +28,7 @@ void parse_inventory(const char *name);
 void parse_currencies(const char *name);
 void parse_providers(const char *name);
 void parse_substitutions(const char *name);
+void parse_kicad_bom(const char *name);
 
 void yywarnf(const char *fmt, ...);
 void __attribute__((noreturn)) yyerrorf(const char *fmt, ...);

b2/lang.l

@@ -18,6 +18,7 @@
 #include "util.h"
 #include "param.h"
 #include "chr.h"
+#include "bom.h"
 #include "y.tab.h"
 #include "lang.h"
 
@@ -25,8 +26,9 @@
 extern int yyparse(void);
 
 static int start_token;
-static int expose_nl;
-static int pattern;
+static int expose_nl;	/* 0: ignore \n; 1: return TOK_NL */
+static int pattern;	/* 0: = relops are normal; 1: relops switch to PAT */
+static int hash;	/* number of hashes seen in BOM mode */
 static const char *file_name;
 static int lineno;
 
@@ -107,6 +109,7 @@ ID	[-_A-Za-z0-9()+./]
 PAT	"\\"[^\t\n]|[^ \t\n\\]
 
 %s ID PAT
+%x BOM
 
 %%
 
@@ -126,6 +129,16 @@ PAT	"\\"[^\t\n]|[^ \t\n\\]
 				  yylval.s = stralloc(yytext);
 				  return PATTERN; }
 
+<BOM>"eeschema \("[^\n]*	{ hash = 0;
+				  return BOM_EESCHEMA; }
+<BOM>"|"[^\n]*			{ if (hash == 1)
+					bom_parse_line(yytext); }
+<BOM>"#End Cmp"			{ YY_FLUSH_BUFFER;
+				  return 0; }
+<BOM>#[^\n]*			hash++;
+<BOM>\n				lineno++;
+<BOM>.				return *yytext;
+
 [<>=]				{ if (pattern)
 					BEGIN(PAT);
 				  return *yytext; }
@@ -183,3 +196,13 @@ void __attribute__((noreturn)) yyerror(const char *s)
 	fprintf(stderr, "%s:%d: %s\n", file_name, lineno, s);
 	exit(1);
 }
+
+
+/* Define parse_kicad_bom here, so that we have access to BOM and INITIAL */
+
+void parse_kicad_bom(const char *name)
+{
+	BEGIN(BOM);
+	do_parse(name, START_BOM, 1, 0);
+	BEGIN(INITIAL);
+}

b2/lang.y

@@ -101,7 +101,8 @@ static struct subst *parse_jump(const char *keyword, const char *target)
 
 
 %token			START_HIERARCHY START_CHAR START_INVENTORY
-%token			START_EXCHANGE START_PROVIDERS START_SUBST
+%token			START_EXCHANGE START_PROVIDERS START_SUBST START_BOM
+%token			BOM_EESCHEMA
 %token			TOK_LE TOK_GE TOK_NL
 %token	<s>		WORD PATTERN
 
@@ -138,6 +139,7 @@ all:
 		{
 			substitutions = $2;
 		}
+	| START_BOM bom
 	;
 
 
@@ -653,3 +655,17 @@ opt_block:
 			$$ = $2;
 		}
 	;
+
+
+/* ----- KiCad BOM (from eeschema) ----------------------------------------- */
+
+
+bom:
+	BOM_EESCHEMA
+		/*
+		 * The KiCad BOM syntax is quite alien, so we just check the
+		 * overall structure here, leave extracting the lines with
+		 * actual content to the lexer, and do all the detail work in
+		 * bom.c
+		 */
+	;