--- psiconv/trunk/lib/psiconv/parse_simple.c	2000/12/25 22:25:33	79
+++ psiconv/trunk/lib/psiconv/parse_simple.c	2004/02/22 22:24:39	217
@@ -1,6 +1,6 @@
 /*
     parse_simple.c - Part of psiconv, a PSION 5 file formats converter
-    Copyright (c) 1999, 2000  Frodo Looijaard <frodol@dds.nl>
+    Copyright (c) 1999-2004  Frodo Looijaard <frodol@dds.nl>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -21,17 +21,41 @@
 #include "compat.h"
 
 #include <stdlib.h>
+#include <math.h>
 
 #include "parse_routines.h"
 #include "error.h"
+#include "unicode.h"
 
-psiconv_u8 psiconv_read_u8(const psiconv_buffer buf,int lev,psiconv_u32 off,
+#ifdef DMALLOC
+#include <dmalloc.h>
+#endif
+
+static psiconv_float_t pow2(int n);
+static psiconv_string_t psiconv_read_string_aux(const psiconv_config config,
+                                     const psiconv_buffer buf,int lev,
+                                     psiconv_u32 off,int *length, int *status,
+				     int kind);
+
+/* Very inefficient, but good enough for now. By implementing it ourselves,
+   we do not have to link with -lm */
+psiconv_float_t pow2(int n)
+{
+  psiconv_float_t res=1.0;
+  int i;
+
+  for (i = 0; i < (n<0?-n:n); i++) 
+    res *= 2.0;
+
+  return n<0?1/res:res;
+}
+psiconv_u8 psiconv_read_u8(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
                            int *status)
 {
   psiconv_u8 *ptr;
   ptr = psiconv_buffer_get(buf,off);
   if (!ptr) {
-    psiconv_warn(lev,off,"Trying byte read past the end of the file");
+    psiconv_error(config,lev,off,"Trying byte read past the end of the file");
     if (status)
       *status = -PSICONV_E_PARSE;
     return 0;
@@ -41,14 +65,14 @@
   return *ptr;
 }
 
-psiconv_u16 psiconv_read_u16(const psiconv_buffer buf,int lev,psiconv_u32 off,
+psiconv_u16 psiconv_read_u16(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
                              int *status)
 {
   psiconv_u8 *ptr0,*ptr1;
   ptr0 = psiconv_buffer_get(buf,off);
   ptr1 = psiconv_buffer_get(buf,off+1);
   if (!ptr0 || !ptr1) {
-    psiconv_warn(lev,off,"Trying word read past the end of the file");
+    psiconv_error(config,lev,off,"Trying word read past the end of the file");
     if (status)
       *status = -PSICONV_E_PARSE;
     return 0;
@@ -58,7 +82,7 @@
   return *ptr0 + (*ptr1 << 8);
 }
 
-psiconv_u32 psiconv_read_u32(const psiconv_buffer buf,int lev,psiconv_u32 off,
+psiconv_u32 psiconv_read_u32(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
                              int *status)
 {
   psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3;
@@ -67,7 +91,7 @@
   ptr2 = psiconv_buffer_get(buf,off+2);
   ptr3 = psiconv_buffer_get(buf,off+3);
   if (!ptr0 || !ptr1 || !ptr2 || !ptr3) {
-    psiconv_warn(lev,off,"Trying long read past the end of the file");
+    psiconv_error(config,lev,off,"Trying long read past the end of the file");
     if (status)
       *status = -PSICONV_E_PARSE;
     return 0;
@@ -77,32 +101,47 @@
   return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24);
 }
 
-psiconv_S_t psiconv_read_S(const psiconv_buffer buf, int lev, psiconv_u32 off,
+psiconv_s32 psiconv_read_sint(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
+                              int *length,int *status)
+{
+  int localstatus;
+  psiconv_u32 temp;
+
+  temp=psiconv_read_u32(config,buf,lev,off,&localstatus);
+  if (status) 
+    *status = localstatus;
+  if (length)
+    *length = localstatus?0:4;
+
+  return localstatus?0:(temp & 0x7fffffff)*(temp&0x80000000?-1:1);
+}
+
+psiconv_u32 psiconv_read_S(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off,
                            int *length,int *status)
 {
   psiconv_u8 temp;
-  psiconv_S_t res;
+  psiconv_u32 res;
   int len,localstatus;
 
-  psiconv_progress(lev+1,off,"Going to read a S length indicator");
-  temp = psiconv_read_u8(buf,lev+2,off,&localstatus);
+  psiconv_progress(config,lev+1,off,"Going to read a S length indicator");
+  temp = psiconv_read_u8(config,buf,lev+2,off,&localstatus);
   if (localstatus)
     goto ERROR;
   if ((temp & 0x03) == 0x02) {
-    res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 2;
+    res = psiconv_read_u8(config,buf,lev+2,off,&localstatus) >> 2;
     if (localstatus)
       goto ERROR;
     len = 1;
-    psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res);
-  } else if ((temp & 0x07) == 0x03) {
-    res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 3;
+    psiconv_debug(config,lev+2,off,"Indicator (1 byte): %02x",res);
+  } else if ((temp & 0x07) == 0x05) {
+    res = psiconv_read_u16(config,buf,lev+2,off,&localstatus) >> 3;
     if (localstatus)
       goto ERROR;
     len = 2;
-    psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res);
+    psiconv_debug(config,lev+2,off,"Indicator (2 bytes): %04x",res);
   } else {
-    psiconv_warn(lev+2,off,"S indicator: unknown encoding!");
-    psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp);
+    psiconv_error(config,lev+2,off,"S indicator: unknown encoding!");
+    psiconv_debug(config,lev+2,off,"Raw data first byte: %02x",temp);
     goto ERROR;
   }
 
@@ -111,13 +150,13 @@
   if (status)
     *status = 0;
 
-  psiconv_progress(lev+1,off+len-1,
+  psiconv_progress(config,lev+1,off+len-1,
                    "End of S length indicator (total length: %08x)", len);
 
   return res;
 
 ERROR:
-  psiconv_warn(lev+1,off,"Reading of S indicator failed");
+  psiconv_error(config,lev+1,off,"Reading of S indicator failed");
   if (status)
     *status = localstatus;
   if (length)
@@ -125,38 +164,38 @@
   return 0;
 }
 
-psiconv_X_t psiconv_read_X(const psiconv_buffer buf, int lev, psiconv_u32 off,
+psiconv_u32 psiconv_read_X(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off,
                            int *length, int *status)
 {
   psiconv_u8 temp;
-  psiconv_X_t res;
+  psiconv_u32 res;
   int len,localstatus;
 
-  psiconv_progress(lev+1,off,"Going to read a X length indicator");
-  temp = psiconv_read_u8(buf,lev+2,off,&localstatus);
+  psiconv_progress(config,lev+1,off,"Going to read a X length indicator");
+  temp = psiconv_read_u8(config,buf,lev+2,off,&localstatus);
   if (localstatus)
     goto ERROR;
   if ((temp & 0x01) == 0x00) {
-    res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 1;
+    res = psiconv_read_u8(config,buf,lev+2,off,&localstatus) >> 1;
     if (localstatus)
       goto ERROR;
     len = 1;
-    psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res);
+    psiconv_debug(config,lev+2,off,"Indicator (1 byte): %02x",res);
   } else if ((temp & 0x03) == 0x01) {
-    res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 2;
+    res = psiconv_read_u16(config,buf,lev+2,off,&localstatus) >> 2;
     if (localstatus)
       goto ERROR;
     len = 2;
-    psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res);
+    psiconv_debug(config,lev+2,off,"Indicator (2 bytes): %04x",res);
   } else if ((temp & 0x07) == 0x03) {
-    res = psiconv_read_u32(buf,lev+2,off,&localstatus) >> 3;
+    res = psiconv_read_u32(config,buf,lev+2,off,&localstatus) >> 3;
     if (localstatus)
       goto ERROR;
     len = 4;
-    psiconv_debug(lev+2,off,"Indicator (4 bytes): %08x",res);
+    psiconv_debug(config,lev+2,off,"Indicator (4 bytes): %08x",res);
   } else {
-    psiconv_warn(lev+2,off,"X indicator: unknown encoding!");
-    psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp);
+    psiconv_error(config,lev+2,off,"X indicator: unknown encoding!");
+    psiconv_debug(config,lev+2,off,"Raw data first byte: %02x",temp);
     goto ERROR;
   }
 
@@ -165,13 +204,13 @@
   if (status)
     *status = 0;
 
-  psiconv_progress(lev+1,off+len-1,
+  psiconv_progress(config,lev+1,off+len-1,
                    "End of X length indicator (total length: %08x)", len);
 
   return res;
 
 ERROR:
-  psiconv_warn(lev+1,off,"Reading of X indicator failed");
+  psiconv_error(config,lev+1,off,"Reading of X indicator failed");
   if (status)
     *status = localstatus;
   if (length)
@@ -179,23 +218,23 @@
   return 0;
 }
 
-psiconv_length_t psiconv_read_length(const psiconv_buffer buf, int lev,
+psiconv_length_t psiconv_read_length(const psiconv_config config,const psiconv_buffer buf, int lev,
                                      psiconv_u32 off, int *length, int *status)
 {
   psiconv_length_t res;
   int localstatus;
 
-  res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(buf,lev,off,
+  res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(config,buf,lev,off,
                                                         &localstatus));
   if (localstatus) {
-    psiconv_warn(lev+1,off,"Reading of length failed");
+    psiconv_error(config,lev+1,off,"Reading of length failed");
     if (length)
       *length = 0;
     if (status)
        *status = localstatus;
      return 0;
   }
-  psiconv_debug(lev+1,off,"Length: %f",res);
+  psiconv_debug(config,lev+1,off,"Length: %f",res);
   if (length)
     *length = 4;
   if (status)
@@ -203,21 +242,21 @@
   return res;
 }
 
-psiconv_size_t psiconv_read_size(const psiconv_buffer buf, int lev,
+psiconv_size_t psiconv_read_size(const psiconv_config config,const psiconv_buffer buf, int lev,
                                  psiconv_u32 off, int *length, int *status)
 {
   psiconv_size_t res;
   int localstatus;
-  res = ((psiconv_s32) psiconv_read_u32(buf,lev,off,&localstatus)) / 20.0;
+  res = ((psiconv_s32) psiconv_read_u32(config,buf,lev,off,&localstatus)) / 20.0;
   if (localstatus) {
-    psiconv_warn(lev+1,off,"Reading of size failed");
+    psiconv_error(config,lev+1,off,"Reading of size failed");
     if (length)
       *length = 0;
     if (status)
        *status = localstatus;
      return 0;
   }
-  psiconv_debug(lev+1,off,"Size: %f",res);
+  psiconv_debug(config,lev+1,off,"Size: %f",res);
   if (status)
      *status = 0;
   if (length)
@@ -225,14 +264,14 @@
   return res;
 }
 
-int psiconv_parse_bool(const psiconv_buffer buf, int lev, psiconv_u32 off, 
+int psiconv_parse_bool(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off, 
                        int *length, psiconv_bool_t *result)
 {
   psiconv_u8 temp;
   int localstatus;
-  temp = psiconv_read_u8(buf,lev,off,&localstatus);
+  temp = psiconv_read_u8(config,buf,lev,off,&localstatus);
   if (localstatus) {
-    psiconv_warn(lev+1,off,"Reading of bool failed");
+    psiconv_error(config,lev+1,off,"Reading of bool failed");
     if (length)
       *length = 0;
      return localstatus;
@@ -246,60 +285,175 @@
     *result = psiconv_bool_true;
     return 0;
   }
-  psiconv_warn(lev+1,off,"Unknown value for boolean");
-  psiconv_debug(lev+1,off,"Boolean value: %02x",temp);
+  psiconv_warn(config,lev+1,off,"Unknown value for boolean");
+  psiconv_debug(config,lev+1,off,"Boolean value: %02x",temp);
   *result = psiconv_bool_true;
   return 0;
 }
 
-psiconv_string_t psiconv_read_string(const psiconv_buffer buf,int lev,
+psiconv_string_t psiconv_read_string(const psiconv_config config,
+                                     const psiconv_buffer buf,int lev,
                                      psiconv_u32 off,int *length, int *status)
 {
-  int stringlen,i,leng,len,localstatus;
-  psiconv_string_t result;
-  char *res_copy;
+  return psiconv_read_string_aux(config,buf,lev,off,length,status,-1);
+}
 
-  psiconv_progress(lev+1,off,"Going to read a string");
+psiconv_string_t psiconv_read_short_string(const psiconv_config config,
+                                     const psiconv_buffer buf,int lev,
+                                     psiconv_u32 off,int *length, int *status)
+{
+  return psiconv_read_string_aux(config,buf,lev,off,length,status,-2);
+}
 
-  stringlen = psiconv_read_S(buf,lev+2,off,&leng,&localstatus);
+psiconv_string_t psiconv_read_charlist(const psiconv_config config,
+                                       const psiconv_buffer buf, int lev,
+				       psiconv_u32 off, int nrofchars,
+				       int *status)
+{
+  int length;
+  if (nrofchars <= 0) {
+    psiconv_error(config,lev,off,
+	          "psiconv_read_charlist called with non-positive nrofchars");
+    if (status)
+      *status = -PSICONV_E_OTHER;
+    return NULL;
+  }
+  return psiconv_read_string_aux(config,buf,lev,off,&length,status,nrofchars);
+}
+
+
+psiconv_string_t psiconv_read_string_aux(const psiconv_config config,
+                                     const psiconv_buffer buf,int lev,
+                                     psiconv_u32 off,int *length, int *status,
+				     int kind)
+{
+  int bytecount,i,leng,len,localstatus;
+  psiconv_string_t result;
+  char *res_copy;
+  psiconv_list string;
+  psiconv_ucs2 nextchar;
+  psiconv_ucs2 *nextcharptr;
+
+  psiconv_progress(config,lev+1,off,"Going to read a string");
+
+  if (kind == -1) 
+    bytecount = psiconv_read_S(config,buf,lev+2,off,&leng,&localstatus);
+  else if (kind == -2) {
+    bytecount = psiconv_read_u8(config,buf,lev+2,off,&localstatus);
+    leng = 1;
+  } else {
+    bytecount = kind;
+    leng = 0;
+    localstatus = 0;
+  }
   if (localstatus)
     goto ERROR1;
-  psiconv_debug(lev+2,off,"Length: %i",stringlen);
+  psiconv_debug(config,lev+2,off,"Length: %i",bytecount);
   len = leng;
 
-  result = malloc(stringlen + 1);
-  if (!result)
+  if (!(string = psiconv_list_new(sizeof(*result))))
     goto ERROR1;
-  for (i = 0; (i < stringlen) && !localstatus; i++)
-    result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus);
-  if (localstatus)
+
+  /* Read the string into a temporary list */
+  i = 0;
+  while (i < bytecount) {
+    nextchar = psiconv_unicode_read_char(config,buf,lev,off+i+len,
+	                                  &leng,&localstatus);
+    if (localstatus)
+      goto ERROR2;
+    if ((localstatus = psiconv_list_add(string,&nextchar)))
+      goto ERROR2;
+    i += leng;
+  }
+  if (i > bytecount) {
+    psiconv_error(config,lev,off+i+len,"Malformed string");
+    localstatus = PSICONV_E_PARSE;
     goto ERROR2;
-  result[stringlen] = 0;
-  len += stringlen;
+  }
+  len += bytecount;
 
-  res_copy = psiconv_make_printable(result);
-  if (!res_copy)
+  /* Copy the list to the actual string */
+  if (!(result = malloc(sizeof(*result) * (psiconv_list_length(string) + 1))))
     goto ERROR2;
-  psiconv_debug(lev+2,off,"Contents: `%s'",res_copy);
+  for (i = 0; i < psiconv_list_length(string); i++) {
+    if (!(nextcharptr = psiconv_list_get(string,i))) {
+      psiconv_error(config,lev,off+i+len,"Internal data corruption");
+      goto ERROR3;
+    }
+    result[i] = *nextcharptr;
+  }
+  result[i] = 0;
+
+  res_copy = psiconv_make_printable(config,result);
+  if (!res_copy)
+    goto ERROR3;
+  psiconv_debug(config,lev+2,off,"Contents: `%s'",res_copy);
   free(res_copy);
 
+  psiconv_list_free(string);
+
   if (length)
     *length = len;
 
   if (status)
     *status = 0;
 
-  psiconv_progress(lev+1,off+len-1,"End of string (total length: %08x)",len);
+  psiconv_progress(config,lev+1,off+len-1,"End of string (total length: %08x)",len);
 
   return result;
 
-ERROR2:
+ERROR3:
   free(result);
+ERROR2:
+  psiconv_list_free(string);
 ERROR1:
-  psiconv_warn(lev+1,off,"Reading of string failed");
+  psiconv_error(config,lev+1,off,"Reading of string failed");
   if (status)
     *status = localstatus;
   if (length)
     *length = 0;
   return NULL;
 }
+
+psiconv_float_t psiconv_read_float(const psiconv_config config,const psiconv_buffer buf, int lev,
+                                   psiconv_u32 off, int *length, int *status)
+{
+  psiconv_float_t result,bitvalue;
+  int res,bit;
+  psiconv_u32 temp=0;
+
+  psiconv_progress(config,lev+1,off,"Going to read a float");
+
+  bitvalue = 0.5;
+  result = 1.0;
+  for (bit = 0x33; bit > 0; bit--) {
+    if ((bit == 0x33) || ((bit & 0x07) == 0x07))
+      temp = psiconv_read_u8(config,buf,lev+2,off+ (bit >> 3),&res);
+    if (res)
+      goto ERROR;
+    if (temp & (0x01 << (bit & 0x07)))
+      result += bitvalue;
+    bitvalue /= 2.0;
+  }
+  temp = psiconv_read_u16(config,buf,lev+2,off+6,&res);
+  if (res)
+    goto ERROR;
+  if (temp & 0x8000)
+    result = -result;
+  temp = (temp & 0x7ff0) >> 4;
+  result *= pow2(((int) temp)-0x3ff);
+  psiconv_debug(config,lev+1,off,"Float value: %f",result);
+  if (length)
+    *length = 8;
+  if (*status)
+    *status = res;
+  return result;
+ERROR:
+  psiconv_error(config,lev+1,off,"Reading of float failed");
+  if (length)
+    *length = 0;
+  if (*status)
+    *status = res;
+  return 0.0;
+}
+