From 6d4981d8f0352ec836451e8c7090ef584cffc489 Mon Sep 17 00:00:00 2001
From: Sven Robertz <sven@cs.lth.se>
Date: Thu, 11 Apr 2013 14:26:08 +0200
Subject: [PATCH] moved main (test) program to a separate file
---
lib/c/experimental/labcomm_sig_parser.c | 195 ++++++------------------
lib/c/experimental/labcomm_sig_parser.h | 94 ++++++++++++
lib/c/experimental/test_sig_parser.c | 39 +++++
3 files changed, 179 insertions(+), 149 deletions(-)
create mode 100644 lib/c/experimental/labcomm_sig_parser.h
create mode 100644 lib/c/experimental/test_sig_parser.c
diff --git a/lib/c/experimental/labcomm_sig_parser.c b/lib/c/experimental/labcomm_sig_parser.c
index bdda6ca..e1347e8 100644
--- a/lib/c/experimental/labcomm_sig_parser.c
+++ b/lib/c/experimental/labcomm_sig_parser.c
@@ -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");
-}
-
-
diff --git a/lib/c/experimental/labcomm_sig_parser.h b/lib/c/experimental/labcomm_sig_parser.h
new file mode 100644
index 0000000..cae7473
--- /dev/null
+++ b/lib/c/experimental/labcomm_sig_parser.h
@@ -0,0 +1,94 @@
+/* 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
diff --git a/lib/c/experimental/test_sig_parser.c b/lib/c/experimental/test_sig_parser.c
new file mode 100644
index 0000000..35ac975
--- /dev/null
+++ b/lib/c/experimental/test_sig_parser.c
@@ -0,0 +1,39 @@
+/* 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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