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* grub-core/script/execute.c (gettext_append): Remove nested functions.

This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-03-02 12:17:52 +01:00
parent 19e29ee1a9
commit 396d4091e7
2 changed files with 112 additions and 87 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
2013-03-02 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/script/execute.c (gettext_append): Remove nested functions.
2013-03-02 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/normal/charset.c (grub_bidi_logical_to_visual): Add
hook pass-through parameter. All users updated and unnested.
2013-03-02 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/commands/loadenv.c (grub_cmd_list_env): Move print_var

190
grub-core/script/execute.c
View File

@ -372,10 +372,19 @@ grub_script_env_set (const char *name, const char *val)
return grub_env_set (name, val);
}
struct gettext_context
{
char **allowed_strings;
grub_size_t nallowed_strings;
grub_size_t additional_len;
};
static int
parse_string (const char *str,
int (*hook) (const char *var, grub_size_t varlen),
char **put)
int (*hook) (const char *var, grub_size_t varlen,
char **ptr, struct gettext_context *ctx),
struct gettext_context *ctx,
char *put)
{
const char *ptr;
int escaped = 0;
@ -387,7 +396,7 @@ parse_string (const char *str,
case '\\':
escaped = !escaped;
if (!escaped && put)
*((*put)++) = '\\';
*(put++) = '\\';
ptr++;
break;
case '$':
@ -395,7 +404,7 @@ parse_string (const char *str,
{
escaped = 0;
if (put)
*((*put)++) = *ptr;
*(put++) = *ptr;
ptr++;
break;
}
@ -409,7 +418,7 @@ parse_string (const char *str,
ptr = grub_strchr (optr, '}');
if (!ptr)
break;
if (hook (optr, ptr - optr))
if (hook (optr, ptr - optr, &put, ctx))
return 1;
ptr++;
break;
@ -418,7 +427,7 @@ parse_string (const char *str,
optr = ptr;
while (*ptr >= '0' && *ptr <= '9')
ptr++;
if (hook (optr, ptr - optr))
if (hook (optr, ptr - optr, &put, ctx))
return 1;
break;
case 'a' ... 'z':
@ -430,29 +439,98 @@ parse_string (const char *str,
|| (*ptr >= 'A' && *ptr <= 'Z')
|| *ptr == '_')
ptr++;
if (hook (optr, ptr - optr))
if (hook (optr, ptr - optr, &put, ctx))
return 1;
break;
case '?':
case '#':
if (hook (ptr, 1))
if (hook (ptr, 1, &put, ctx))
return 1;
ptr++;
break;
default:
if (put)
*((*put)++) = '$';
*(put++) = '$';
}
break;
default:
if (escaped && put)
*((*put)++) = '\\';
*(put++) = '\\';
escaped = 0;
if (put)
*((*put)++) = *ptr;
*(put++) = *ptr;
ptr++;
break;
}
if (put)
*(put++) = 0;
return 0;
}
static int
gettext_putvar (const char *str, grub_size_t len,
char **ptr, struct gettext_context *ctx)
{
const char *var;
grub_size_t i;
for (i = 0; i < ctx->nallowed_strings; i++)
if (grub_strncmp (ctx->allowed_strings[i], str, len) == 0
&& ctx->allowed_strings[i][len] == 0)
{
break;
}
if (i == ctx->nallowed_strings)
return 0;
/* Enough for any number. */
if (len == 1 && str[0] == '#')
{
grub_snprintf (*ptr, 30, "%u", scope->argv.argc);
*ptr += grub_strlen (*ptr);
return 0;
}
var = grub_env_get (ctx->allowed_strings[i]);
if (var)
*ptr = grub_stpcpy (*ptr, var);
return 0;
}
static int
gettext_save_allow (const char *str, grub_size_t len,
char **ptr __attribute__ ((unused)),
struct gettext_context *ctx)
{
ctx->allowed_strings[ctx->nallowed_strings++] = grub_strndup (str, len);
if (!ctx->allowed_strings[ctx->nallowed_strings - 1])
return 1;
return 0;
}
static int
gettext_getlen (const char *str, grub_size_t len,
char **ptr __attribute__ ((unused)),
struct gettext_context *ctx)
{
const char *var;
grub_size_t i;
for (i = 0; i < ctx->nallowed_strings; i++)
if (grub_strncmp (ctx->allowed_strings[i], str, len) == 0
&& ctx->allowed_strings[i][len] == 0)
break;
if (i == ctx->nallowed_strings)
return 0;
/* Enough for any number. */
if (len == 1 && str[0] == '#')
{
ctx->additional_len += 30;
return 0;
}
var = grub_env_get (ctx->allowed_strings[i]);
if (var)
ctx->additional_len += grub_strlen (var);
return 0;
}
@ -460,99 +538,37 @@ static int
gettext_append (struct grub_script_argv *result, const char *orig_str)
{
const char *template;
char *res = 0, *ptr;
char **allowed_strings;
grub_size_t nallowed_strings = 0;
grub_size_t additional_len = 1;
char *res = 0;
struct gettext_context ctx = {
.allowed_strings = 0,
.nallowed_strings = 0,
.additional_len = 1
};
int rval = 1;
const char *iptr;
auto int save_allow (const char *str, grub_size_t len);
int save_allow (const char *str, grub_size_t len)
{
allowed_strings[nallowed_strings++] = grub_strndup (str, len);
if (!allowed_strings[nallowed_strings - 1])
return 1;
return 0;
}
auto int getlen (const char *str, grub_size_t len);
int getlen (const char *str, grub_size_t len)
{
const char *var;
grub_size_t i;
for (i = 0; i < nallowed_strings; i++)
if (grub_strncmp (allowed_strings[i], str, len) == 0
&& allowed_strings[i][len] == 0)
break;
if (i == nallowed_strings)
return 0;
/* Enough for any number. */
if (len == 1 && str[0] == '#')
{
additional_len += 30;
return 0;
}
var = grub_env_get (allowed_strings[i]);
if (var)
additional_len += grub_strlen (var);
return 0;
}
auto int putvar (const char *str, grub_size_t len);
int putvar (const char *str, grub_size_t len)
{
const char *var;
grub_size_t i;
for (i = 0; i < nallowed_strings; i++)
if (grub_strncmp (allowed_strings[i], str, len) == 0
&& allowed_strings[i][len] == 0)
{
break;
}
if (i == nallowed_strings)
return 0;
/* Enough for any number. */
if (len == 1 && str[0] == '#')
{
grub_snprintf (ptr, 30, "%u", scope->argv.argc);
ptr += grub_strlen (ptr);
return 0;
}
var = grub_env_get (allowed_strings[i]);
if (var)
ptr = grub_stpcpy (ptr, var);
return 0;
}
grub_size_t dollar_cnt = 0;
for (iptr = orig_str; *iptr; iptr++)
if (*iptr == '$')
dollar_cnt++;
allowed_strings = grub_malloc (sizeof (allowed_strings[0]) * dollar_cnt);
ctx.allowed_strings = grub_malloc (sizeof (ctx.allowed_strings[0]) * dollar_cnt);
if (parse_string (orig_str, save_allow, 0))
if (parse_string (orig_str, gettext_save_allow, &ctx, 0))
goto fail;
template = _(orig_str);
if (parse_string (template, getlen, 0))
if (parse_string (template, gettext_getlen, &ctx, 0))
goto fail;
res = grub_malloc (grub_strlen (template) + additional_len);
res = grub_malloc (grub_strlen (template) + ctx.additional_len);
if (!res)
goto fail;
ptr = res;
if (parse_string (template, putvar, &ptr))
if (parse_string (template, gettext_putvar, &ctx, res))
goto fail;
*ptr = 0;
char *escaped = 0;
escaped = wildcard_escape (res);
if (grub_script_argv_append (result, escaped, grub_strlen (escaped)))
@ -567,10 +583,10 @@ gettext_append (struct grub_script_argv *result, const char *orig_str)
grub_free (res);
{
grub_size_t i;
for (i = 0; i < nallowed_strings; i++)
grub_free (allowed_strings[i]);
for (i = 0; i < ctx.nallowed_strings; i++)
grub_free (ctx.allowed_strings[i]);
}
grub_free (allowed_strings);
grub_free (ctx.allowed_strings);
return rval;
}