linux/scripts/kconfig/util.c
Vadim Bendebury (вб) da60fbbcb6 menuconfig: wrap long help lines
Help text for certain config options is very extensive (the text
includes the names of all  other options the option in question depends
on). Long lines are not wrapped, making it impossible to see the list
without scrolling horizontally.

This patch adds some logic which wraps help screen lines at word
boundaries to prevent truncating.

Tested by running

  ARCH=powerpc make menuconfig O=/tmp/build

which shows that the long lines are now wrapped, and

 ARCH=powerpc make xconfig O=/tmp/build

to demonstrate that it still compiles and operates as expected.

Signed-off-by: Vadim Bendebury <vbendeb@google.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-02-02 14:33:55 +01:00

136 lines
2.7 KiB
C

/*
* Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
* Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
*
* Released under the terms of the GNU GPL v2.0.
*/
#include <string.h>
#include "lkc.h"
/* file already present in list? If not add it */
struct file *file_lookup(const char *name)
{
struct file *file;
for (file = file_list; file; file = file->next) {
if (!strcmp(name, file->name))
return file;
}
file = malloc(sizeof(*file));
memset(file, 0, sizeof(*file));
file->name = strdup(name);
file->next = file_list;
file_list = file;
return file;
}
/* write a dependency file as used by kbuild to track dependencies */
int file_write_dep(const char *name)
{
struct symbol *sym, *env_sym;
struct expr *e;
struct file *file;
FILE *out;
if (!name)
name = ".kconfig.d";
out = fopen("..config.tmp", "w");
if (!out)
return 1;
fprintf(out, "deps_config := \\\n");
for (file = file_list; file; file = file->next) {
if (file->next)
fprintf(out, "\t%s \\\n", file->name);
else
fprintf(out, "\t%s\n", file->name);
}
fprintf(out, "\n%s: \\\n"
"\t$(deps_config)\n\n", conf_get_autoconfig_name());
expr_list_for_each_sym(sym_env_list, e, sym) {
struct property *prop;
const char *value;
prop = sym_get_env_prop(sym);
env_sym = prop_get_symbol(prop);
if (!env_sym)
continue;
value = getenv(env_sym->name);
if (!value)
value = "";
fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
fprintf(out, "endif\n");
}
fprintf(out, "\n$(deps_config): ;\n");
fclose(out);
rename("..config.tmp", name);
return 0;
}
/* Allocate initial growable sting */
struct gstr str_new(void)
{
struct gstr gs;
gs.s = malloc(sizeof(char) * 64);
gs.len = 64;
gs.max_width = 0;
strcpy(gs.s, "\0");
return gs;
}
/* Allocate and assign growable string */
struct gstr str_assign(const char *s)
{
struct gstr gs;
gs.s = strdup(s);
gs.len = strlen(s) + 1;
gs.max_width = 0;
return gs;
}
/* Free storage for growable string */
void str_free(struct gstr *gs)
{
if (gs->s)
free(gs->s);
gs->s = NULL;
gs->len = 0;
}
/* Append to growable string */
void str_append(struct gstr *gs, const char *s)
{
size_t l;
if (s) {
l = strlen(gs->s) + strlen(s) + 1;
if (l > gs->len) {
gs->s = realloc(gs->s, l);
gs->len = l;
}
strcat(gs->s, s);
}
}
/* Append printf formatted string to growable string */
void str_printf(struct gstr *gs, const char *fmt, ...)
{
va_list ap;
char s[10000]; /* big enough... */
va_start(ap, fmt);
vsnprintf(s, sizeof(s), fmt, ap);
str_append(gs, s);
va_end(ap);
}
/* Retrieve value of growable string */
const char *str_get(struct gstr *gs)
{
return gs->s;
}