Merge branch 'master' into browser

[projects/chimara/chimara.git] / babel / zcode.c

diff --git a/babel/zcode.c b/babel/zcode.c
new file mode 100644 (file)
index 0000000..fb1d6ba
--- /dev/null
+++ b/babel/zcode.c
@@ -0,0 +1,97 @@
+/* zcode.c  Treaty of Babel module for Z-code files\r
+ * 2006 By L. Ross Raszewski\r
+ *\r
+ * This file depends on treaty_builder.h\r
+ *\r
+ * This file is public domain, but note that any changes to this file\r
+ * may render it noncompliant with the Treaty of Babel\r
+ */\r
+\r
+#define FORMAT zcode\r
+#define HOME_PAGE "http://www.inform-fiction.org"\r
+#define FORMAT_EXT ".z3,.z4,.z5,.z6,.z7,.z8"\r
+#define NO_METADATA\r
+#define NO_COVER\r
+#define CUSTOM_EXTENSION\r
+#include "treaty_builder.h"\r
+#include <ctype.h>\r
+#include <stdio.h>\r
+\r
+static int32 get_story_file_IFID(void *story_file, int32 extent, char *output, int32 output_extent)\r
+{\r
+ int32 i,j;\r
+ char ser[7];\r
+ char buffer[32];\r
+\r
+\r
+ if (extent<0x1D) return INVALID_STORY_FILE_RV;\r
+ memcpy(ser, (char *) story_file+0x12, 6);\r
+ ser[6]=0;\r
+ /* Detect vintage story files */\r
+ if (!(ser[0]=='8' || ser[0]=='9' ||\r
+     (ser[0]=='0' && ser[1]>='0' && ser[1]<='5')))\r
+ {\r
+  for(i=0;i<extent;i++) if (memcmp((char *)story_file+i,"UUID://",7)==0) break;\r
+  if (i<extent) /* Found explicit IFID */\r
+  {\r
+   for(j=i+7;j<extent && ((char *)story_file)[j]!='/';j++);\r
+   if (j<extent)\r
+   {\r
+    i+=7;\r
+    ASSERT_OUTPUT_SIZE(j-i);\r
+    memcpy(output,(char *)story_file+i,j-i);\r
+    output[j-i]=0;\r
+    return 1;\r
+   }\r
+  }\r
+ }\r
+ /* Did not find intact IFID.  Build one */\r
+ i=((unsigned char *)story_file)[2] << 8 |((unsigned char *)story_file)[3];\r
+ for(j=0;j<6;j++)\r
+  if (!isalnum(ser[j])) ser[j]='-';\r
+\r
+ j=((unsigned char *)story_file)[0x1C] << 8 |((unsigned char *)story_file)[0x1D];\r
+\r
+ if (strcmp(ser,"000000") && isdigit(ser[0]) && ser[0]!='8')\r
+  sprintf(buffer,"ZCODE-%d-%s-%04X",i,ser,j);\r
+ else\r
+  sprintf(buffer,"ZCODE-%d-%s",i,ser);\r
+\r
+ ASSERT_OUTPUT_SIZE((signed) strlen(buffer)+1);\r
+ strcpy((char *)output,buffer);\r
+ return 1;\r
+\r
+}\r
+\r
+static int32 read_zint(unsigned char *sf)\r
+{\r
+ return ((int32)sf[0] << 8) | ((int32) sf[1]);\r
+\r
+}\r
+static int32 claim_story_file(void *story_file, int32 extent)\r
+{\r
+ unsigned char *sf=(unsigned char *)story_file;\r
+ int32 i,j;\r
+ if (extent<0x3c ||\r
+     sf[0] < 1 ||\r
+     sf[0] > 8\r
+    ) return INVALID_STORY_FILE_RV;\r
+ for(i=4;i<=14;i+=2)\r
+ {\r
+  j=read_zint(sf+i);\r
+  if (j>extent || j < 0x40) return INVALID_STORY_FILE_RV;\r
+ }\r
+\r
+ return VALID_STORY_FILE_RV;\r
+}\r
+static int32 get_story_file_extension(void *sf, int32 extent, char *out, int32 output_extent)\r
+{\r
+ int v;\r
+ if (!extent) return INVALID_STORY_FILE_RV;\r
+ v= ((char *) sf)[0];\r
+ if (v>9) ASSERT_OUTPUT_SIZE(5);\r
+ else ASSERT_OUTPUT_SIZE(4);\r
+ sprintf(out,".z%d",v);\r
+ return 3+(v>9);\r
+\r
+}\r