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makedep: Use a string array to store makefile variables.

oldstable
Alexandre Julliard 2013-12-26 19:25:57 +01:00
parent 708d6d3ae8
commit c29ea61087
1 changed files with 48 additions and 47 deletions
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95
tools/makedep.c
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@ -92,15 +92,7 @@ static const struct strarray empty_strarray;
static struct strarray include_args;
static struct strarray object_extensions;
struct make_var
{
char *name;
char *value;
};
static struct make_var *make_vars;
static unsigned int nb_make_vars;
static struct strarray make_vars;
static const char *base_dir = ".";
static const char *src_dir;
@ -1212,9 +1204,9 @@ static char *get_make_variable( const char *name )
{
unsigned int i;
for (i = 0; i < nb_make_vars; i++)
if (!strcmp( make_vars[i].name, name ))
return xstrdup( make_vars[i].value );
for (i = 0; i < make_vars.count; i += 2)
if (!strcmp( make_vars.str[i], name ))
return xstrdup( make_vars.str[i + 1] );
return NULL;
}
@ -1252,7 +1244,13 @@ static char *get_expanded_make_variable( const char *name )
free( expand );
expand = tmp;
}
return expand;
/* consider empty variables undefined */
p = expand;
while (*p && isspace(*p)) p++;
if (*p) return expand;
free( expand );
return NULL;
}
@ -1271,13 +1269,45 @@ static struct strarray get_expanded_make_var_array( const char *name )
}
/*******************************************************************
* set_make_variable
*/
static int set_make_variable( struct strarray *array, const char *assignment )
{
unsigned int i;
char *p, *name;
p = name = xstrdup( assignment );
while (isalnum(*p) || *p == '_') p++;
if (name == p) return 0; /* not a variable */
if (isspace(*p))
{
*p++ = 0;
while (isspace(*p)) p++;
}
if (*p != '=') return 0; /* not an assignment */
*p++ = 0;
while (isspace(*p)) p++;
/* redefining a variable replaces the previous value */
for (i = 0; i < array->count; i += 2)
{
if (strcmp( array->str[i], name )) continue;
array->str[i + 1] = p;
return 1;
}
strarray_add( array, name );
strarray_add( array, p );
return 1;
}
/*******************************************************************
* parse_makefile
*/
static void parse_makefile(void)
{
char *buffer;
unsigned int i, vars_size = 0;
FILE *file;
input_file_name = strmake( "%s/%s", base_dir, makefile_name );
@ -1287,43 +1317,14 @@ static void parse_makefile(void)
exit( 1 );
}
nb_make_vars = 0;
input_line = 0;
while ((buffer = get_line( file )))
{
char *name, *p = buffer;
if (Separator && !strncmp( buffer, Separator, strlen(Separator) )) break;
while (isspace(*p)) p++;
if (*p == '#') continue; /* comment */
name = p;
while (isalnum(*p) || *p == '_') p++;
if (name == p) continue; /* not a variable */
if (isspace(*p))
{
*p++ = 0;
while (isspace(*p)) p++;
}
if (*p != '=') continue; /* not an assignment */
*p++ = 0;
while (isspace(*p)) p++;
/* redefining a variable replaces the previous value */
for (i = 0; i < nb_make_vars; i++)
if (!strcmp( make_vars[i].name, name )) break;
if (i == nb_make_vars)
{
if (nb_make_vars == vars_size)
{
vars_size *= 2;
if (!vars_size) vars_size = 32;
make_vars = xrealloc( make_vars, vars_size * sizeof(*make_vars) );
}
make_vars[nb_make_vars++].name = xstrdup( name );
}
else free( make_vars[i].value );
make_vars[i].value = xstrdup( p );
if (*buffer == '\t') continue; /* command */
while (isspace( *buffer )) buffer++;
if (*buffer == '#') continue; /* comment */
set_make_variable( &make_vars, buffer );
}
fclose( file );
input_file_name = NULL;