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#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "ltrace.h"
#include "read_config_file.h"
#include "output.h"
#include "debug.h"
/*
* "void" ARGTYPE_VOID
* "int" ARGTYPE_INT
* "uint" ARGTYPE_UINT
* "long" ARGTYPE_LONG
* "ulong" ARGTYPE_ULONG
* "octal" ARGTYPE_OCTAL
* "char" ARGTYPE_CHAR
* "string" ARGTYPE_STRING
* "format" ARGTYPE_FORMAT
* "addr" ARGTYPE_ADDR
*/
struct function * list_of_functions = NULL;
static struct list_of_pt_t {
char * name;
enum arg_type pt;
} list_of_pt[] = {
{ "void", ARGTYPE_VOID },
{ "int", ARGTYPE_INT },
{ "uint", ARGTYPE_UINT },
{ "long", ARGTYPE_LONG },
{ "ulong", ARGTYPE_ULONG },
{ "octal", ARGTYPE_OCTAL },
{ "char", ARGTYPE_CHAR },
{ "addr", ARGTYPE_ADDR },
{ "file", ARGTYPE_FILE },
{ "format", ARGTYPE_FORMAT },
{ "string", ARGTYPE_STRING },
{ NULL, ARGTYPE_UNKNOWN } /* Must finish with NULL */
};
static struct complete_arg_type
str2type(char ** str) {
struct list_of_pt_t * tmp = &list_of_pt[0];
struct complete_arg_type pt = {0,0};
if (!strncmp(*str, "string", 6)
&& isdigit((unsigned char)(*str)[6]))
{
pt.at = ARGTYPE_STRINGN;
pt.argno = atoi(*str + 6);
*str += strspn(*str, "string0123456789");
return pt;
}
while(tmp->name) {
if (!strncmp(*str, tmp->name, strlen(tmp->name))
&& index(" ,)#", *(*str+strlen(tmp->name)))) {
*str += strlen(tmp->name);
pt.at = tmp->pt;
return pt;
}
tmp++;
}
pt.at = ARGTYPE_UNKNOWN;
return pt;
}
static void
eat_spaces(char ** str) {
while(**str==' ') {
(*str)++;
}
}
/*
Returns position in string at the left parenthesis which starts the
function's argument signature. Returns NULL on error.
*/
static char *
start_of_arg_sig(char * str) {
char * pos;
int stacked = 0;
if (!strlen(str)) return NULL;
pos = &str[strlen(str)];
do {
pos--;
if (pos < str) return NULL;
while ((pos > str) && (*pos != ')') && (*pos != '(')) pos--;
if (*pos == ')') stacked++;
else if (*pos == '(') stacked--;
else return NULL;
} while (stacked > 0);
return (stacked == 0) ? pos : NULL;
}
static int line_no;
static char * filename;
static struct function *
process_line (char * buf) {
struct function fun;
struct function * fun_p;
char * str = buf;
char * tmp;
int i;
line_no++;
debug(3, "Reading line %d of `%s'", line_no, filename);
eat_spaces(&str);
fun.return_type = str2type(&str);
if (fun.return_type.at==ARGTYPE_UNKNOWN) {
debug(3, " Skipping line %d", line_no);
return NULL;
}
debug(4, " return_type = %d", fun.return_type);
eat_spaces(&str);
tmp = start_of_arg_sig(str);
if (!tmp) {
output_line(0, "Syntax error in `%s', line %d", filename, line_no);
return NULL;
}
*tmp = '\0';
fun.name = strdup(str);
str = tmp+1;
debug(3, " name = %s", fun.name);
fun.params_right = 0;
for(i=0; i<MAX_ARGS; i++) {
eat_spaces(&str);
if (*str == ')') {
break;
}
if (str[0]=='+') {
fun.params_right++;
str++;
} else if (fun.params_right) {
fun.params_right++;
}
fun.arg_types[i] = str2type(&str);
if (fun.return_type.at==ARGTYPE_UNKNOWN) {
output_line(0, "Syntax error in `%s', line %d", filename, line_no);
return NULL;
}
eat_spaces(&str);
if (*str==',') {
str++;
continue;
} else if (*str==')') {
continue;
} else {
output_line(0, "Syntax error in `%s', line %d", filename, line_no);
return NULL;
}
}
fun.num_params = i;
fun_p = malloc(sizeof(struct function));
memcpy(fun_p, &fun, sizeof(struct function));
return fun_p;
}
void
read_config_file(char * file) {
FILE * stream;
char buf[1024];
filename = file;
debug(1, "Reading config file `%s'...", filename);
stream = fopen(filename, "r");
if (!stream) {
return;
}
line_no=0;
while (fgets(buf, 1024, stream)) {
struct function * tmp = process_line(buf);
if (tmp) {
debug(2, "New function: `%s'", tmp->name);
tmp->next = list_of_functions;
list_of_functions = tmp;
}
}
fclose(stream);
}
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