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Commit 6d4981d8 authored by Sven Robertz's avatar Sven Robertz
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moved main (test) program to a separate file

parent f0ce33c6
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lib/c/experimental/labcomm_sig_parser.c
+ 46
− 149
View file @ 6d4981d8
......@@ -9,79 +9,16 @@
#include <stdio.h>
#include <string.h>
#include "../labcomm_private.h"
#include "labcomm_sig_parser.h"
#undef DEBUG
#undef DEBUG_STACK
#undef DEBUG_READ
#undef QUIET //just print type and size when skipping data
#undef VERBOSE // print in great detail
#ifdef QUIET
#define INFO_PRINTF(format, args...)
#undef VERBOSE
#else
#define INFO_PRINTF(format, args...) \
printf (format , ## args)
#endif
#ifdef VERBOSE
#define VERBOSE_PRINTF(format, args...) \
printf (format , ## args)
#else
#define VERBOSE_PRINTF(format, args...)
#endif
#undef EXIT_WHEN_RECEIVING_DATA
#undef RETURN_STRINGS // highly experimental, and not used
#ifndef TRUE
#define FALSE 0
#define TRUE 1
#endif
typedef enum{
TYPE_DECL = LABCOMM_TYPEDEF,
SAMPLE_DECL = LABCOMM_SAMPLE,
ARRAY_DECL = LABCOMM_ARRAY,
STRUCT_DECL = LABCOMM_STRUCT,
TYPE_BOOLEAN = LABCOMM_BOOLEAN,
TYPE_BYTE = LABCOMM_BYTE,
TYPE_SHORT = LABCOMM_SHORT,
TYPE_INTEGER = LABCOMM_INT,
TYPE_LONG = LABCOMM_LONG,
TYPE_FLOAT = LABCOMM_FLOAT,
TYPE_DOUBLE = LABCOMM_DOUBLE,
TYPE_STRING = LABCOMM_STRING
} labcomm_type ;
void error(char *s) {
static void error(char *s) {
fprintf(stderr, "%s", s);
fprintf(stderr, "\nexiting\n");
exit(1);
}
#define BUF_SIZE 1024
#define STACK_SIZE 16
/* internal type: stack for the parser */
typedef struct {
unsigned char* c;
unsigned int size;
unsigned int capacity;
unsigned int idx;
void** stack;
unsigned int top;
} buffer;
/* aux method for reading a big endian uint32 from a char* (i.e. ntohl but for explicit char*) */
static unsigned int unpack32(unsigned char *c, unsigned int idx) {
unsigned int b0=(c[idx]) << 3 ;
......@@ -143,14 +80,23 @@ void* pop(buffer *b) {
int init_buffer(buffer *b, size_t size, size_t stacksize) {
b->c = malloc(size);
b->capacity = size;
b->size = 0;
b->idx = 0;
b->stack = calloc(stacksize, sizeof(b->stack));
b->stacksize = stacksize;
b->top = stacksize-1;
return b->c == NULL || b->stack == NULL;
}
int read_file(FILE *f, buffer *b) {
int s = fread(b->c, sizeof(char), b->capacity, f);
b->size = s;
b->idx=0;
return s;
}
int more(buffer *b)
{
return b->idx < b->size;
......@@ -196,10 +142,6 @@ void getStr(buffer *b, char *dest, size_t size) {
b->idx += size;
}
//XXX experimental
#define MAX_SIGNATURES 10
#define MAX_NAME_LEN 32
#define MAX_SIG_LEN 128
unsigned int signatures_length[MAX_SIGNATURES];
unsigned char signatures_name[MAX_SIGNATURES][MAX_NAME_LEN]; //HERE BE DRAGONS: add range checks
unsigned char signatures[MAX_SIGNATURES][MAX_SIG_LEN];
......@@ -246,32 +188,32 @@ int labcomm_sizeof(unsigned int type)
}
}
int accept_packet(buffer *d);
int accept_type_decl(buffer *d);
int accept_sample_decl(buffer *d);
int accept_user_id(buffer *d);
int accept_string(buffer *d);
int accept_string_length(buffer *d);
int accept_char(buffer *d);
int accept_type(buffer *d);
int accept_boolean_type(buffer *d);
int accept_byte_type(buffer *d);
int accept_short_type(buffer *d);
int accept_integer_type(buffer *d);
int accept_long_type(buffer *d);
int accept_float_type(buffer *d);
int accept_long_type(buffer *d);
int accept_string_type(buffer *d);
int accept_array_decl(buffer *d);
int accept_number_of_indices(buffer *d);
int accept_indices(buffer *d);
int accept_variable_index(buffer *d);
int accept_fixed_index(buffer *d);
int accept_struct_decl(buffer *d);
int accept_number_of_fields(buffer *d);
int accept_field(buffer *d);
int accept_sample_data(buffer *d);
int accept_packed_sample_data(buffer *d);
static int accept_packet(buffer *d);
static int accept_type_decl(buffer *d);
static int accept_sample_decl(buffer *d);
static int accept_user_id(buffer *d);
static int accept_string(buffer *d);
static int accept_string_length(buffer *d);
static int accept_char(buffer *d);
static int accept_type(buffer *d);
static int accept_boolean_type(buffer *d);
static int accept_byte_type(buffer *d);
static int accept_short_type(buffer *d);
static int accept_integer_type(buffer *d);
static int accept_long_type(buffer *d);
static int accept_float_type(buffer *d);
static int accept_long_type(buffer *d);
static int accept_string_type(buffer *d);
static int accept_array_decl(buffer *d);
static int accept_number_of_indices(buffer *d);
static int accept_indices(buffer *d);
static int accept_variable_index(buffer *d);
static int accept_fixed_index(buffer *d);
static int accept_struct_decl(buffer *d);
static int accept_number_of_fields(buffer *d);
static int accept_field(buffer *d);
static int accept_sample_data(buffer *d);
static int accept_packed_sample_data(buffer *d);
static unsigned char labcomm_varint_sizeof(unsigned int i)
{
......@@ -352,7 +294,7 @@ int do_parse(buffer *d) {
}
}
int accept_user_id(buffer *d){
static int accept_user_id(buffer *d){
unsigned char nbytes;
unsigned int uid = peek_varint(d, &nbytes);
if(uid >= LABCOMM_USER) {
......@@ -365,7 +307,7 @@ int accept_user_id(buffer *d){
}
}
int accept_string(buffer *d){
static int accept_string(buffer *d){
unsigned int len = get_varint(d);
char *str=malloc(len);
getStr(d, str, len);
......@@ -378,7 +320,7 @@ int accept_string(buffer *d){
push(d, (void *) (unsigned long) len);
return TRUE;
}
int accept_type(buffer *d){
static int accept_type(buffer *d){
unsigned char nbytes;
unsigned int type = peek_varint(d, &nbytes) ;
switch(type) {
......@@ -428,7 +370,7 @@ int accept_type(buffer *d){
return TRUE;
}
int accept_array_decl(buffer *d){
static int accept_array_decl(buffer *d){
unsigned char nbytes;
unsigned int tid = peek_varint(d, &nbytes) ;
if(tid == ARRAY_DECL) {
......@@ -458,7 +400,7 @@ int accept_array_decl(buffer *d){
return FALSE;
}
}
int accept_struct_decl(buffer *d){
static int accept_struct_decl(buffer *d){
unsigned char nbytes;
unsigned int tid = peek_varint(d, &nbytes) ;
if(tid == STRUCT_DECL) {
......@@ -479,7 +421,7 @@ int accept_struct_decl(buffer *d){
return FALSE;
}
}
int accept_field(buffer *d){
static int accept_field(buffer *d){
VERBOSE_PRINTF("field ");
accept_string(d);
pop(d); // ignore, for now
......@@ -491,7 +433,7 @@ int accept_field(buffer *d){
accept_type(d);
VERBOSE_PRINTF("\n");
}
int accept_sample_data(buffer *d){
static int accept_sample_data(buffer *d){
accept_user_id(d);
unsigned int uid = (unsigned int) (unsigned long) pop(d);
printf("sample data... %x\n", uid);
......@@ -505,9 +447,9 @@ int accept_sample_data(buffer *d){
}
//int accept_packed_sample_data(buffer *d){
int skip_type(unsigned int,buffer*,unsigned char*,unsigned int,unsigned int*) ;
static int skip_type(unsigned int,buffer*,unsigned char*,unsigned int,unsigned int*) ;
int skip_array(buffer *d, unsigned char *sig, unsigned int len, unsigned int *pos) {
static int skip_array(buffer *d, unsigned char *sig, unsigned int len, unsigned int *pos) {
unsigned int skip = 0;
unsigned int tot_nbr_elem_tmp = 1;
unsigned char nbytes;
......@@ -704,48 +646,3 @@ int skip_packed_sample_data(buffer *d, unsigned char *sig, unsigned int siglen)
printf("skipped %d bytes\n", skipped);
return TRUE;
}
int read_file(FILE *f, buffer *b) {
int s = fread(b->c, sizeof(char), b->capacity, f);
b->size = s;
b->idx=0;
return s;
}
void test_read(buffer *buf) {
int r = read_file(stdin, buf);
#ifdef DEBUG_READ
printf("read %d bytes:\n\n", r);
int i;
for(i=0; i<r; i++) {
printf("%x ", buf->c[i]);
if(i%8 == 7) printf("\n");
}
printf("\n");
#endif
}
int main() {
buffer buf;
#ifdef DEBUG_VARINT_SIZEOF
printf("varint_sizeof 0 : %d\n", labcomm_varint_sizeof(0));
printf("varint_sizeof 1 : %d\n", labcomm_varint_sizeof(1));
printf("varint_sizeof 127 : %d\n", labcomm_varint_sizeof(127));
printf("varint_sizeof 128 : %d\n", labcomm_varint_sizeof(128));
printf("varint_sizeof 65536 : %d\n", labcomm_varint_sizeof(65536));
printf("varint_sizeof 1000000 : %d\n", labcomm_varint_sizeof(1000000));
printf("varint_sizeof 0xffffffff : %d\n", labcomm_varint_sizeof(0xffffffff));
#endif
if( init_buffer(&buf, BUF_SIZE, STACK_SIZE) ) {
printf("failed to init buffer\n");
exit(1);
}
test_read(&buf);
do{
printf("--------------------------------------------- new packet: \n");
} while(more(&buf) && do_parse(&buf));
printf("EOF\n");
}
lib/c/experimental/labcomm_sig_parser.h 0 → 100644
+ 94
− 0
View file @ 6d4981d8
/* labcomm_sig_parser.h:
* an example parser for labcomm signatures, illustrating how to skip samples
* based on their signature. Intended as an embryo for introducing this
* functionality into the lib to allow a channel to survive types with no
* registered handler.
*/
#ifndef LABCOMM_SIG_PARSER_H
#define LABCOMM_SIG_PARSER_H
#include "../labcomm_private.h"
#undef DEBUG
#undef DEBUG_STACK
#undef QUIET //just print type and size when skipping data
#undef VERBOSE // print in great detail
#ifdef QUIET
#define INFO_PRINTF(format, args...)
#undef VERBOSE
#else
#define INFO_PRINTF(format, args...) \
printf (format , ## args)
#endif
#ifdef VERBOSE
#define VERBOSE_PRINTF(format, args...) \
printf (format , ## args)
#else
#define VERBOSE_PRINTF(format, args...)
#endif
#undef EXIT_WHEN_RECEIVING_DATA
#undef RETURN_STRINGS // highly experimental, and not used
#ifndef TRUE
#define FALSE 0
#define TRUE 1
#endif
typedef enum{
TYPE_DECL = LABCOMM_TYPEDEF,
SAMPLE_DECL = LABCOMM_SAMPLE,
ARRAY_DECL = LABCOMM_ARRAY,
STRUCT_DECL = LABCOMM_STRUCT,
TYPE_BOOLEAN = LABCOMM_BOOLEAN,
TYPE_BYTE = LABCOMM_BYTE,
TYPE_SHORT = LABCOMM_SHORT,
TYPE_INTEGER = LABCOMM_INT,
TYPE_LONG = LABCOMM_LONG,
TYPE_FLOAT = LABCOMM_FLOAT,
TYPE_DOUBLE = LABCOMM_DOUBLE,
TYPE_STRING = LABCOMM_STRING
} labcomm_type ;
/* internal type: stack for the parser */
typedef struct {
unsigned char* c;
size_t size;
size_t capacity;
unsigned int idx;
void** stack;
size_t stacksize;
unsigned int top;
} buffer;
int init_buffer(buffer *b, size_t size, size_t stacksize) ;
int read_file(FILE *f, buffer *b);
//XXX experimental
#define MAX_SIGNATURES 10
#define MAX_NAME_LEN 32
#define MAX_SIG_LEN 128
#define STACK_SIZE 16
unsigned int get_signature_len(unsigned int uid);
unsigned char* get_signature_name(unsigned int uid);
unsigned char* get_signature(unsigned int uid);
void dump_signature(unsigned int uid);
int do_parse(buffer *d);
/* parse signature and skip the corresponding bytes in the buffer
*/
int skip_packed_sample_data(buffer *d, unsigned char *sig, unsigned int siglen);
#endif
lib/c/experimental/test_sig_parser.c 0 → 100644
+ 39
− 0
View file @ 6d4981d8
/* labcomm_sig_parser.c:
* a main program for the example labcomm signatures parser
*/
#include <stdio.h>
#include "labcomm_sig_parser.h"
#undef DEBUG_READ
#define BUF_SIZE 1024
#define STACK_SIZE 16
void test_read(buffer *buf) {
int r = read_file(stdin, buf);
#ifdef DEBUG_READ
printf("read %d bytes:\n\n", r);
int i;
for(i=0; i<r; i++) {
printf("%x ", buf->c[i]);
if(i%8 == 7) printf("\n");
}
printf("\n");
#endif
}
int main() {
buffer buf;
if( init_buffer(&buf, BUF_SIZE, STACK_SIZE) ) {
printf("failed to init buffer\n");
exit(1);
}
test_read(&buf);
do{
printf("--------------------------------------------- new packet: \n");
} while(more(&buf) && do_parse(&buf));
printf("EOF\n");
}
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