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* kern/parser.c: Indented.

This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-03-18 00:19:30 +01:00
parent ed0e3d30cd
commit f84afb2775
2 changed files with 74 additions and 70 deletions
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4
ChangeLog
View File

@ -1,3 +1,7 @@
2010-03-18 Vladimir Serbinenko <phcoder@gmail.com>
* kern/parser.c: Indented.
2010-03-17 Vladimir Serbinenko <phcoder@gmail.com> 2010-03-17 Vladimir Serbinenko <phcoder@gmail.com>
* term/i386/pc/vesafb.c: Removed (orphaned, deprecated and broken). * term/i386/pc/vesafb.c: Removed (orphaned, deprecated and broken).

140
kern/parser.c
View File

@ -26,32 +26,31 @@
/* All the possible state transitions on the command line. If a /* All the possible state transitions on the command line. If a
transition can not be found, it is assumed that there is no transition can not be found, it is assumed that there is no
transition and keep_value is assumed to be 1. */ transition and keep_value is assumed to be 1. */
static struct grub_parser_state_transition state_transitions[] = static struct grub_parser_state_transition state_transitions[] = {
{ {GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_QUOTE, '\'', 0},
{ GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_QUOTE, '\'', 0}, {GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_DQUOTE, '\"', 0},
{ GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_DQUOTE, '\"', 0}, {GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_VAR, '$', 0},
{ GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_VAR, '$', 0}, {GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_ESC, '\\', 0},
{ GRUB_PARSER_STATE_TEXT, GRUB_PARSER_STATE_ESC, '\\', 0},
{ GRUB_PARSER_STATE_ESC, GRUB_PARSER_STATE_TEXT, 0, 1}, {GRUB_PARSER_STATE_ESC, GRUB_PARSER_STATE_TEXT, 0, 1},
{ GRUB_PARSER_STATE_QUOTE, GRUB_PARSER_STATE_TEXT, '\'', 0}, {GRUB_PARSER_STATE_QUOTE, GRUB_PARSER_STATE_TEXT, '\'', 0},
{ GRUB_PARSER_STATE_DQUOTE, GRUB_PARSER_STATE_TEXT, '\"', 0}, {GRUB_PARSER_STATE_DQUOTE, GRUB_PARSER_STATE_TEXT, '\"', 0},
{ GRUB_PARSER_STATE_DQUOTE, GRUB_PARSER_STATE_QVAR, '$', 0}, {GRUB_PARSER_STATE_DQUOTE, GRUB_PARSER_STATE_QVAR, '$', 0},
{ GRUB_PARSER_STATE_VAR, GRUB_PARSER_STATE_VARNAME2, '{', 0}, {GRUB_PARSER_STATE_VAR, GRUB_PARSER_STATE_VARNAME2, '{', 0},
{ GRUB_PARSER_STATE_VAR, GRUB_PARSER_STATE_VARNAME, 0, 1}, {GRUB_PARSER_STATE_VAR, GRUB_PARSER_STATE_VARNAME, 0, 1},
{ GRUB_PARSER_STATE_VARNAME, GRUB_PARSER_STATE_TEXT, ' ', 1}, {GRUB_PARSER_STATE_VARNAME, GRUB_PARSER_STATE_TEXT, ' ', 1},
{ GRUB_PARSER_STATE_VARNAME2, GRUB_PARSER_STATE_TEXT, '}', 0}, {GRUB_PARSER_STATE_VARNAME2, GRUB_PARSER_STATE_TEXT, '}', 0},
{ GRUB_PARSER_STATE_QVAR, GRUB_PARSER_STATE_QVARNAME2, '{', 0}, {GRUB_PARSER_STATE_QVAR, GRUB_PARSER_STATE_QVARNAME2, '{', 0},
{ GRUB_PARSER_STATE_QVAR, GRUB_PARSER_STATE_QVARNAME, 0, 1}, {GRUB_PARSER_STATE_QVAR, GRUB_PARSER_STATE_QVARNAME, 0, 1},
{ GRUB_PARSER_STATE_QVARNAME, GRUB_PARSER_STATE_TEXT, '\"', 0}, {GRUB_PARSER_STATE_QVARNAME, GRUB_PARSER_STATE_TEXT, '\"', 0},
{ GRUB_PARSER_STATE_QVARNAME, GRUB_PARSER_STATE_DQUOTE, ' ', 1}, {GRUB_PARSER_STATE_QVARNAME, GRUB_PARSER_STATE_DQUOTE, ' ', 1},
{ GRUB_PARSER_STATE_QVARNAME2, GRUB_PARSER_STATE_DQUOTE, '}', 0}, {GRUB_PARSER_STATE_QVARNAME2, GRUB_PARSER_STATE_DQUOTE, '}', 0},
{ 0, 0, 0, 0} {0, 0, 0, 0}
}; };
@ -74,17 +73,17 @@ grub_parser_cmdline_state (grub_parser_state_t state, char c, char *result)
if (transition->input == c) if (transition->input == c)
break; break;
if (transition->input == ' ' && ! grub_isalpha (c) if (transition->input == ' ' && !grub_isalpha (c)
&& ! grub_isdigit (c) && c != '_') && !grub_isdigit (c) && c != '_')
break; break;
/* A less perfect match was found, use this one if no exact /* A less perfect match was found, use this one if no exact
match can be found. */ match can be found. */
if (transition->input == 0) if (transition->input == 0)
break; break;
} }
if (! transition->from_state) if (!transition->from_state)
transition = &default_transition; transition = &default_transition;
if (transition->keep_value) if (transition->keep_value)
@ -113,43 +112,44 @@ grub_parser_split_cmdline (const char *cmdline, grub_reader_getline_t getline,
auto int check_varstate (grub_parser_state_t s); auto int check_varstate (grub_parser_state_t s);
int check_varstate (grub_parser_state_t s) int check_varstate (grub_parser_state_t s)
{ {
return (s == GRUB_PARSER_STATE_VARNAME return (s == GRUB_PARSER_STATE_VARNAME
|| s == GRUB_PARSER_STATE_VARNAME2 || s == GRUB_PARSER_STATE_VARNAME2
|| s == GRUB_PARSER_STATE_QVARNAME || s == GRUB_PARSER_STATE_QVARNAME
|| s == GRUB_PARSER_STATE_QVARNAME2); || s == GRUB_PARSER_STATE_QVARNAME2);
} }
auto void add_var (grub_parser_state_t newstate); auto void add_var (grub_parser_state_t newstate);
void add_var (grub_parser_state_t newstate) void add_var (grub_parser_state_t newstate)
{ {
char *val; char *val;
/* Check if a variable was being read in and the end of the name /* Check if a variable was being read in and the end of the name
was reached. */ was reached. */
if (! (check_varstate (state) && !check_varstate (newstate))) if (!(check_varstate (state) && !check_varstate (newstate)))
return; return;
*(vp++) = '\0'; *(vp++) = '\0';
val = grub_env_get (varname); val = grub_env_get (varname);
vp = varname; vp = varname;
if (! val) if (!val)
return; return;
/* Insert the contents of the variable in the buffer. */ /* Insert the contents of the variable in the buffer. */
for (; *val; val++) for (; *val; val++)
*(bp++) = *val; *(bp++) = *val;
} }
*argc = 0; *argc = 0;
do do
{ {
if (! rd || !*rd) if (!rd || !*rd)
{ {
if (getline) if (getline)
getline (&rd, 1); getline (&rd, 1);
else break; else
break;
} }
if (!rd) if (!rd)
@ -190,7 +190,8 @@ grub_parser_split_cmdline (const char *cmdline, grub_reader_getline_t getline,
} }
state = newstate; state = newstate;
} }
} while (state != GRUB_PARSER_STATE_TEXT && !check_varstate (state)); }
while (state != GRUB_PARSER_STATE_TEXT && !check_varstate (state));
/* A special case for when the last character was part of a /* A special case for when the last character was part of a
variable. */ variable. */
@ -204,12 +205,12 @@ grub_parser_split_cmdline (const char *cmdline, grub_reader_getline_t getline,
/* Reserve memory for the return values. */ /* Reserve memory for the return values. */
args = grub_malloc (bp - buffer); args = grub_malloc (bp - buffer);
if (! args) if (!args)
return grub_errno; return grub_errno;
grub_memcpy (args, buffer, bp - buffer); grub_memcpy (args, buffer, bp - buffer);
*argv = grub_malloc (sizeof (char *) * (*argc + 1)); *argv = grub_malloc (sizeof (char *) * (*argc + 1));
if (! *argv) if (!*argv)
{ {
grub_free (args); grub_free (args);
return grub_errno; return grub_errno;
@ -229,35 +230,34 @@ grub_parser_split_cmdline (const char *cmdline, grub_reader_getline_t getline,
return 0; return 0;
} }
struct grub_handler_class grub_parser_class = struct grub_handler_class grub_parser_class = {
{ .name = "parser"
.name = "parser" };
};
grub_err_t grub_err_t
grub_parser_execute (char *source) grub_parser_execute (char *source)
{ {
auto grub_err_t getline (char **line, int cont); auto grub_err_t getline (char **line, int cont);
grub_err_t getline (char **line, int cont __attribute__ ((unused))) grub_err_t getline (char **line, int cont __attribute__ ((unused)))
{ {
char *p; char *p;
if (! source) if (!source)
{ {
*line = 0; *line = 0;
return 0; return 0;
} }
p = grub_strchr (source, '\n'); p = grub_strchr (source, '\n');
if (p) if (p)
*p = 0; *p = 0;
*line = grub_strdup (source); *line = grub_strdup (source);
if (p) if (p)
*p = '\n'; *p = '\n';
source = p ? p + 1 : 0; source = p ? p + 1 : 0;
return 0; return 0;
} }
while (source) while (source)
{ {