learned some things about spos

[pspp] / dump-spo2.c

diff --git a/dump-spo2.c b/dump-spo2.c
index 33671632755321814dcae1ac86a1d78983fbf1cb..d50d861fa428260e4d99bdde812da3517da056c7 100644 (file)
--- a/dump-spo2.c
+++ b/dump-spo2.c
@@ -2,6 +2,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <float.h>
+#include <inttypes.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -257,6 +258,20 @@ get_string1(void)
   return s;
 }
 
+static void
+match_string1_assert(const char *exp, const char *where)
+{
+  int start = pos;
+  char *act = get_string1();
+  if (strcmp(act, exp)) 
+    {
+      fprintf(stderr, "%s: 0x%x: expected \"%s\", got \"%s\"\n",
+              where, start, exp, act);
+      exit(1);
+    }
+}
+#define match_string1_assert(x) match_string1_assert(x, WHERE)
+
 static char *
 get_string2(void)
 {
@@ -266,6 +281,20 @@ get_string2(void)
   return s;
 }
 
+static void
+match_string2_assert(const char *exp, const char *where)
+{
+  int start = pos;
+  char *act = get_string2();
+  if (strcmp(act, exp)) 
+    {
+      fprintf(stderr, "%s: 0x%x: expected \"%s\", got \"%s\"\n",
+              where, start, exp, act);
+      exit(1);
+    }
+}
+#define match_string2_assert(x) match_string2_assert(x, WHERE)
+
 static char *
 get_string(const char *where)
 {
@@ -406,6 +435,40 @@ format_name (int format, char *buf)
     }
 }
 
+static void
+parse_heading(const char *name)
+{
+  match_u16_assert(0xffff);
+  match_u16_assert(0);
+  match_string2_assert(name);
+}
+
+static void
+match_zeros_assert(int count)
+{
+  for (int i = 0; i < count; i++)
+    if (data[pos + i])
+      {
+        fprintf (stderr,
+                 "%#x: expected %d zeros here but offset %d is %#"PRIx8"\n",
+                 pos, count, i, data[pos + i]);
+        exit (1);
+      }
+  pos += count;
+}
+
+static void
+parse_DspString(void)
+{
+  match_byte_assert(1);
+  match_byte_assert(2);
+  match_byte_assert(40);
+  if (!match_byte(0))
+    match_byte_assert(5);
+  match_byte_assert(0);
+  match_byte_assert(1);
+  printf ("DspString(\"%s\")\n", get_string1());
+}
 
 int
 main(int argc, char *argv[])
@@ -463,5 +526,26 @@ main(int argc, char *argv[])
 
   setvbuf (stdout, NULL, _IOLBF, 0);
 
+  match_byte_assert(4);
+  match_u32_assert(0);
+  match_string1_assert("SPSS Output Document");
+  match_u32_assert(1);
+  match_byte_assert(0x63);
+
+  parse_heading("NavRoot");
+  match_byte_assert(2);
+  match_zeros_assert(32);
+
+  parse_heading("DspSimpleText");
+  match_zeros_assert(10);
+
+  parse_heading("DspString");
+  parse_DspString();
+
+  parse_heading("NavTreeViewItem");
+  
+
+  printf ("%#x: end of successful parse\n", pos);
+
   return 0;
 }