Commit e54e692b authored by Arnaud Lacombe's avatar Arnaud Lacombe Committed by Michal Marek
Browse files

kconfig: introduce specialized printer 



Make conf_write_symbol() grammar agnostic to be able to use it from different
code path. These path pass a printer callback which will print a symbol's name
and its value in different format.

conf_write_symbol()'s job become mostly only to prepare a string for the
printer. This avoid to have to pass specialized flag to generic
functions

Signed-off-by: default avatarArnaud Lacombe <lacombar@gmail.com>
[mmarek: rebased on top of de125187 (kconfig: autogenerated config_is_xxx
macro)]
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
parent ec6452a5

scripts/kconfig/confdata.c

+215 −127
Original line number Diff line number Diff line
@@ -422,64 +422,228 @@ int conf_read(const char *name) 
	return 0;

}



/* Write a S_STRING */

static void conf_write_string(bool headerfile, const char *name,

                              const char *str, FILE *out)

/*

 * Kconfig configuration printer

 *

 * This printer is used when generating the resulting configuration after

 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by

 * passing a non-NULL argument to the printer.

 *

 */

static void

kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)

{

	int l;

	if (headerfile)

		fprintf(out, "#define %s%s \"", CONFIG_, name);

	else

		fprintf(out, "%s%s=\"", CONFIG_, name);



	while (1) {

		l = strcspn(str, "\"\\");

	switch (sym->type) {

	case S_BOOLEAN:

	case S_TRISTATE:

		if (*value == 'n') {

			bool skip_unset = (arg != NULL);



			if (!skip_unset)

				fprintf(fp, "# %s%s is not set\n",

				    CONFIG_, sym->name);

			return;

		}

		break;

	default:

		break;

	}



	fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);

}



static void

kconfig_print_comment(FILE *fp, const char *value, void *arg)

{

	const char *p = value;

	size_t l;



	for (;;) {

		l = strcspn(p, "\n");

		fprintf(fp, "#");

		if (l) {

			xfwrite(str, l, 1, out);

			str += l;

			fprintf(fp, " ");

			fwrite(p, l, 1, fp);

			p += l;

		}

		if (!*str)

		fprintf(fp, "\n");

		if (*p++ == '\0')

			break;

		fprintf(out, "\\%c", *str++);

	}

	fputs("\"\n", out);

}



static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)

static struct conf_printer kconfig_printer_cb =

{

	const char *str;

	.print_symbol = kconfig_print_symbol,

	.print_comment = kconfig_print_comment,

};



/*

 * Header printer

 *

 * This printer is used when generating the `include/generated/autoconf.h' file.

 */

static void

header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)

{

	const char *suffix = "";



	switch (sym->type) {

	case S_BOOLEAN:

	case S_TRISTATE:

		switch (sym_get_tristate_value(sym)) {

		case no:

			if (write_no)

				fprintf(out, "# %s%s is not set\n",

				    CONFIG_, sym->name);

			break;

		case mod:

			fprintf(out, "%s%s=m\n", CONFIG_, sym->name);

		switch (*value) {

		case 'n':

			return;

		case 'm':

			suffix = "_MODULE";

			/* FALLTHROUGH */

		default:

			value = "1";

		}

		break;

		case yes:

			fprintf(out, "%s%s=y\n", CONFIG_, sym->name);

	default:

		break;

	}



	fprintf(fp, "#define %s%s%s %s\n",

	    CONFIG_, sym->name, suffix, value);

}



static void

header_print_comment(FILE *fp, const char *value, void *arg)

{

	const char *p = value;

	size_t l;



	fprintf(fp, "/*\n");

	for (;;) {

		l = strcspn(p, "\n");

		fprintf(fp, " *");

		if (l) {

			fprintf(fp, " ");

			fwrite(p, l, 1, fp);

			p += l;

		}

		fprintf(fp, "\n");

		if (*p++ == '\0')

			break;

	case S_STRING:

		conf_write_string(false, sym->name, sym_get_string_value(sym), out);

		break;

	case S_HEX:

	case S_INT:

		str = sym_get_string_value(sym);

		fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);

	}

	fprintf(fp, " */\n");

}



static struct conf_printer header_printer_cb =

{

	.print_symbol = header_print_symbol,

	.print_comment = header_print_comment,

};



/*

 * Function-style header printer

 *

 * This printer is used to generate the config_is_xxx() function-style macros

 * in `include/generated/autoconf.h' 

 */

static void

header_function_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)

{

	int val = 0;

	char c;

	char *tmp, *d;



	switch (sym->type) {

	case S_BOOLEAN:

	case S_TRISTATE:

		break;

	default:

		return;

	}

	if (*value == 'm')

		val = 2;

	else if (*value == 'y')

		val = 1;



	d = strdup(CONFIG_);

	tmp = d;

	while ((c = *d)) {

		*d = tolower(c);

		d++;

	}



	fprintf(fp, "#define %sis_", tmp);

	free(tmp);



	d = strdup(sym->name);

	tmp = d;

	while ((c = *d)) {

		*d = tolower(c);

		d++;

	}

	fprintf(fp, "%s%s() %d\n", tmp, (val > 1) ? "_module" : "",

		      val ? 1 : 0);

	free(tmp);

}



static struct conf_printer header_function_printer_cb =

{

	.print_symbol = header_function_print_symbol,

};





/*

 * Tristate printer

 *

 * This printer is used when generating the `include/config/tristate.conf' file.

 */

static void

tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)

{



	if (sym->type == S_TRISTATE && *value != 'n')

		fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));

}



static struct conf_printer tristate_printer_cb =

{

	.print_symbol = tristate_print_symbol,

	.print_comment = kconfig_print_comment,

};



static void conf_write_symbol(FILE *fp, struct symbol *sym,

			      struct conf_printer *printer, void *printer_arg)

{

	const char *str;



	switch (sym->type) {

	case S_OTHER:

	case S_UNKNOWN:

		break;

	case S_STRING:

		str = sym_get_string_value(sym);

		str = sym_escape_string_value(str);

		printer->print_symbol(fp, sym, str, printer_arg);

		free((void *)str);

		break;

	default:

		str = sym_get_string_value(sym);

		printer->print_symbol(fp, sym, str, printer_arg);

	}

}



static void

conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)

{

	char buf[256];



	snprintf(buf, sizeof(buf),

	    "\n"

	    "Automatically generated file; DO NOT EDIT.\n"

	    "%s\n",

	    rootmenu.prompt->text);



	printer->print_comment(fp, buf, printer_arg);

}



/*

 * Write out a minimal config.

 * All values that has default values are skipped as this is redundant.
@@ -536,7 +700,7 @@ int conf_write_defconfig(const char *filename) 
						goto next_menu;

				}

			}

			conf_write_symbol(sym, out, true);

			conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);

		}

next_menu:

		if (menu->list != NULL) {
@@ -601,11 +765,7 @@ int conf_write(const char *name) 
	if (!out)

		return 1;



	fprintf(out, _("#\n"

		       "# Automatically generated make config: don't edit\n"

		       "# %s\n"

		       "#\n"),

		     rootmenu.prompt->text);

	conf_write_heading(out, &kconfig_printer_cb, NULL);



	if (!conf_get_changed())

		sym_clear_all_valid();
@@ -626,8 +786,8 @@ int conf_write(const char *name) 
			if (!(sym->flags & SYMBOL_WRITE))

				goto next;

			sym->flags &= ~SYMBOL_WRITE;

			/* Write config symbol to file */

			conf_write_symbol(sym, out, true);



			conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);

		}



next:
@@ -773,33 +933,9 @@ out: 
	return res;

}



static void conf_write_function_autoconf(FILE *out, char* conf, char* name,

					 int val)

{

	char c;

	char *tmp, *d;



	d = strdup(conf);

	tmp = d;

	while ((c = *conf++))

		*d++ = tolower(c);



	fprintf(out, "#define %sis_", tmp);

	free(tmp);



	d = strdup(name);

	tmp = d;

	while ((c = *name++))

		*d++ = tolower(c);

	fprintf(out, "%s%s() %d\n", tmp, (val > 1) ? "_module" : "",

		      val ? 1 : 0);

	free(tmp);

}



int conf_write_autoconf(void)

{

	struct symbol *sym;

	const char *str;

	const char *name;

	FILE *out, *tristate, *out_h;

	int i;
@@ -828,72 +964,24 @@ int conf_write_autoconf(void) 
		return 1;

	}



	fprintf(out, "#\n"

		     "# Automatically generated make config: don't edit\n"

		     "# %s\n"

		     "#\n",

		     rootmenu.prompt->text);

	fprintf(tristate, "#\n"

			  "# Automatically generated - do not edit\n"

			  "\n");

	fprintf(out_h, "/*\n"

		       " * Automatically generated C config: don't edit\n"

		       " * %s\n"

		       " */\n",

		       rootmenu.prompt->text);

	conf_write_heading(out, &kconfig_printer_cb, NULL);



	conf_write_heading(tristate, &tristate_printer_cb, NULL);



	conf_write_heading(out_h, &header_printer_cb, NULL);



	for_all_symbols(i, sym) {

		int fct_val = 0;

		sym_calc_value(sym);

		if (!(sym->flags & SYMBOL_WRITE) || !sym->name)

			continue;



		/* write symbol to config file */

		conf_write_symbol(sym, out, false);

		/* write symbol to auto.conf, tristate and header files */

		conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);



		/* update autoconf and tristate files */

		switch (sym->type) {

		case S_BOOLEAN:

		case S_TRISTATE:

			switch (sym_get_tristate_value(sym)) {

			case no:

				break;

			case mod:

				fprintf(tristate, "%s%s=M\n",

				    CONFIG_, sym->name);

				fprintf(out_h, "#define %s%s_MODULE 1\n",

				    CONFIG_, sym->name);

				fct_val = 2;

				break;

			case yes:

				if (sym->type == S_TRISTATE)

					fprintf(tristate,"%s%s=Y\n",

					    CONFIG_, sym->name);

				fprintf(out_h, "#define %s%s 1\n",

				    CONFIG_, sym->name);

				fct_val = 1;

				break;

			}

			conf_write_function_autoconf(out_h, CONFIG_, sym->name, fct_val);

			break;

		case S_STRING:

			conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);

			break;

		case S_HEX:

			str = sym_get_string_value(sym);

			if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {

				fprintf(out_h, "#define %s%s 0x%s\n",

				    CONFIG_, sym->name, str);

				break;

			}

		case S_INT:

			str = sym_get_string_value(sym);

			fprintf(out_h, "#define %s%s %s\n",

			    CONFIG_, sym->name, str);

			break;

		default:

			break;

		}

		conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);



		conf_write_symbol(out_h, sym, &header_printer_cb, NULL);

		conf_write_symbol(out_h, sym, &header_function_printer_cb, NULL);

	}

	fclose(out);

	fclose(tristate);

scripts/kconfig/lkc.h

+5 −0
Original line number Diff line number Diff line
@@ -87,6 +87,11 @@ void sym_set_change_count(int count); 
void sym_add_change_count(int count);

void conf_set_all_new_symbols(enum conf_def_mode mode);



struct conf_printer {

	void (*print_symbol)(FILE *, struct symbol *, const char *, void *);

	void (*print_comment)(FILE *, const char *, void *);

};



/* confdata.c and expr.c */

static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)

{

scripts/kconfig/lkc_proto.h

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]); 
P(sym_lookup,struct symbol *,(const char *name, int flags));

P(sym_find,struct symbol *,(const char *name));

P(sym_expand_string_value,const char *,(const char *in));

P(sym_escape_string_value, const char *,(const char *in));

P(sym_re_search,struct symbol **,(const char *pattern));

P(sym_type_name,const char *,(enum symbol_type type));

P(sym_calc_value,void,(struct symbol *sym));

scripts/kconfig/symbol.c

+45 −1
Original line number Diff line number Diff line
@@ -750,7 +750,8 @@ const char *sym_get_string_value(struct symbol *sym) 
		case no:

			return "n";

		case mod:

			return "m";

			sym_calc_value(modules_sym);

			return (modules_sym->curr.tri == no) ? "n" : "m";

		case yes:

			return "y";

		}
@@ -892,6 +893,49 @@ const char *sym_expand_string_value(const char *in) 
	return res;

}



const char *sym_escape_string_value(const char *in)

{

	const char *p;

	size_t reslen;

	char *res;

	size_t l;



	reslen = strlen(in) + strlen("\"\"") + 1;



	p = in;

	for (;;) {

		l = strcspn(p, "\"\\");

		p += l;



		if (p[0] == '\0')

			break;



		reslen++;

		p++;

	}



	res = malloc(reslen);

	res[0] = '\0';



	strcat(res, "\"");



	p = in;

	for (;;) {

		l = strcspn(p, "\"\\");

		strncat(res, p, l);

		p += l;



		if (p[0] == '\0')

			break;



		strcat(res, "\\");

		strncat(res, p++, 1);

	}



	strcat(res, "\"");

	return res;

}



struct symbol **sym_re_search(const char *pattern)

{

	struct symbol *sym, **sym_arr = NULL;

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