First version of decoding

git-svn-id: https://svn.kapsi.fi/jpa/nanopb@942 e3a754e5-d11d-0410-8d38-ebb782a927b9

tests/person.proto

@@ -0,0 +1,18 @@
+message Person {
+  required string name = 1;
+  required int32 id = 2;
+  optional string email = 3;
+
+  enum PhoneType {
+    MOBILE = 0;
+    HOME = 1;
+    WORK = 2;
+  }
+
+  message PhoneNumber {
+    required string number = 1;
+    optional PhoneType type = 2 [default = HOME];
+  }
+
+  repeated PhoneNumber phone = 4;
+}

tests/test_decode1.c

@@ -0,0 +1,102 @@
+#include <stdio.h>
+#include <string.h>
+#include <stddef.h>
+#include "pb_decode.h"
+
+/* Structures for "Person" message */
+
+typedef enum {
+    Person_PhoneType_MOBILE = 0,
+    Person_PhoneType_HOME = 1,
+    Person_PhoneType_WORK = 2,
+    
+    _Person_PhoneType_size = 0xFFFFFFFF // Force 32-bit enum
+} Person_PhoneType;
+
+typedef struct {
+    char number[40];
+    bool has_type;
+    Person_PhoneType type;
+} Person_PhoneNumber;
+
+typedef struct {
+    char name[40];
+    int32_t id;
+    bool has_email;
+    char email[40];
+
+    pb_callback_t phone;
+} Person;
+
+/* Field descriptions */
+#define membersize(st, m) (sizeof ((st*)0)->m)
+
+const pb_field_t Person_PhoneNumber_fields[] = {
+    {1, offsetof(Person_PhoneNumber, number), PB_ACT_STRING, membersize(Person_PhoneNumber, number)},
+    {2, offsetof(Person_PhoneNumber, has_type), PB_ACT_HAS, membersize(Person_PhoneNumber, has_type)},
+    {2, offsetof(Person_PhoneNumber, type), PB_ACT_UINT32, membersize(Person_PhoneNumber, type)},
+    PB_LAST_FIELD
+};
+
+const pb_field_t Person_fields[] = {
+    {1, offsetof(Person, name), PB_ACT_STRING, membersize(Person, name)},
+    {2, offsetof(Person, id), PB_ACT_INT32, membersize(Person, id)},
+    {3, offsetof(Person, email), PB_ACT_STRING, membersize(Person, email)},
+    {4, offsetof(Person, phone), PB_ACT_SUBMESSAGE, membersize(Person, phone)}
+};
+
+/* Default value descriptions */
+#define Person_PhoneNumber_default {"", false, Person_PhoneType_HOME};
+#define Person_default {"", 0, false, "", {{0},0}};
+
+/* And now, the actual test program */
+
+bool print_phonenumber(pb_istream_t *stream, const pb_field_t *field, void *arg)
+{
+    Person_PhoneNumber x = Person_PhoneNumber_default;
+    if (!pb_decode(stream, Person_PhoneNumber_fields, &x))
+        return false;
+    
+    printf("PhoneNumber: number '%s' type '%d'\n", x.number, x.type);
+    return true;
+}
+
+bool print_person(pb_istream_t *stream)
+{
+    Person x = Person_default;
+    x.phone.funcs.decode = &print_phonenumber;
+    
+    if (!pb_decode(stream, Person_fields, &x))
+        return false;
+    
+    printf("Person: name '%s' id '%d' email '%s'\n", x.name, x.id, x.email);
+    return true;
+}
+
+bool my_read(pb_istream_t *stream, char *buf, size_t count)
+{
+    char *source = (char*)stream->state;
+    
+    if (!stream->bytes_left)
+        return false;
+    
+    if (buf != NULL)
+    {
+        memcpy(buf, source, count);
+    }
+    
+    stream->state = source + count;
+    return true;
+}
+
+int main()
+{
+    char buffer[512];
+    size_t size = fread(buffer, 1, 512, stdin);
+    
+    pb_istream_t stream = {&my_read, buffer, size};
+    if (!print_person(&stream))
+        printf("Parsing failed.\n");
+    
+    return 0;
+}

tests/testperson.pb

@@ -0,0 +1,3 @@
+
+Test Person7foobar@foobar.com"
+555-12345678