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kconfig: refactor conf_write_heading()

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All the call sites of conf_write_heading() pass NULL to the third
argument, and it is not used in the function.

Also, the print_comment hooks are doing much more complex than
needed.

Rewrite the code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2021-10-01 14:32:45 +09:00
parent 229d0cfae5
commit ca51b26b4a
1 changed files with 33 additions and 62 deletions
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95
scripts/kconfig/confdata.c
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@ -161,7 +161,6 @@ static int conf_touch_dep(const char *name)
struct conf_printer {
void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
void (*print_comment)(FILE *, const char *, void *);
};
static void conf_warning(const char *fmt, ...)
@ -594,6 +593,36 @@ int conf_read(const char *name)
return 0;
}
struct comment_style {
const char *decoration;
const char *prefix;
const char *postfix;
};
static const struct comment_style comment_style_pound = {
.decoration = "#",
.prefix = "#",
.postfix = "#",
};
static const struct comment_style comment_style_c = {
.decoration = " *",
.prefix = "/*",
.postfix = " */",
};
static void conf_write_heading(FILE *fp, const struct comment_style *cs)
{
fprintf(fp, "%s\n", cs->prefix);
fprintf(fp, "%s Automatically generated file; DO NOT EDIT.\n",
cs->decoration);
fprintf(fp, "%s %s\n", cs->decoration, rootmenu.prompt->text);
fprintf(fp, "%s\n", cs->postfix);
}
/*
* Kconfig configuration printer
*
@ -625,30 +654,9 @@ kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
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) {
fprintf(fp, " ");
xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
if (*p++ == '\0')
break;
}
}
static struct conf_printer kconfig_printer_cb =
{
.print_symbol = kconfig_print_symbol,
.print_comment = kconfig_print_comment,
};
/*
@ -697,32 +705,9 @@ header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
}
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, " ");
xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
if (*p++ == '\0')
break;
}
fprintf(fp, " */\n");
}
static struct conf_printer header_printer_cb =
{
.print_symbol = header_print_symbol,
.print_comment = header_print_comment,
};
static void conf_write_symbol(FILE *fp, struct symbol *sym,
@ -746,20 +731,6 @@ static void conf_write_symbol(FILE *fp, struct symbol *sym,
free(escaped);
}
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.
@ -876,7 +847,7 @@ int conf_write(const char *name)
if (!out)
return 1;
conf_write_heading(out, &kconfig_printer_cb, NULL);
conf_write_heading(out, &comment_style_pound);
if (!conf_get_changed())
sym_clear_all_valid();
@ -1080,8 +1051,8 @@ int conf_write_autoconf(int overwrite)
return 1;
}
conf_write_heading(out, &kconfig_printer_cb, NULL);
conf_write_heading(out_h, &header_printer_cb, NULL);
conf_write_heading(out, &comment_style_pound);
conf_write_heading(out_h, &comment_style_c);
for_all_symbols(i, sym) {
sym_calc_value(sym);