From 07b54e308aa9793f8521efe8afb906eb5a2c0137 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Sat, 22 Mar 2008 13:00:38 +0000
Subject: [PATCH] Working towards coordination of -compare, -update and
 -cut_out

---
 xorriso/xorriso.c           | 120 ++++++++++++++++++++++++++++++++++++
 xorriso/xorriso_private.h   |  12 ++++
 xorriso/xorriso_timestamp.h |   2 +-
 xorriso/xorrisoburn.c       |  90 +++++++++++++++++++++++++++
 xorriso/xorrisoburn.h       |   5 ++
 5 files changed, 228 insertions(+), 1 deletion(-)

diff --git a/xorriso/xorriso.c b/xorriso/xorriso.c
index fa00182b..9ada6951 100644
--- a/xorriso/xorriso.c
+++ b/xorriso/xorriso.c
@@ -2720,6 +2720,125 @@ int Findjob_set_action_subjob(struct FindjoB *o, int action,
 }
 
 
+/* ---------------------------- SplitparT ------------------------- */
+
+
+struct SplitparT {
+ char *name;
+ int partno;
+ int total_parts;
+ off_t offset;
+ off_t bytes;
+ off_t total_bytes;
+};
+
+
+int Splitparts_new(struct SplitparT **o, int count, int flag)
+{
+ int i;
+
+ (*o)= TSOB_FELD(struct SplitparT, count);
+ if((*o)==NULL)
+   return(-1);
+ for(i= 0; i<count; i++) {
+   o[i]->name= NULL;
+   o[i]->partno= 0;
+   o[i]->total_parts= 0;
+   o[i]->offset= 0;
+   o[i]->bytes= 0;
+   o[i]->total_bytes= 0;
+ }
+ return(1);
+}
+
+
+int Splitparts_destroy(struct SplitparT **o, int count, int flag)
+{
+ int i;
+
+ if((*o)==NULL)
+   return(0);
+ for(i= 0; i<count; i++) {
+   if(o[i]->name!=NULL)
+     free(o[i]->name);
+ }
+ free(*o);
+ *o= NULL;
+ return(1);
+}
+
+
+int Splitpart_set(struct SplitparT *o, char *name, int partno, int total_parts,
+                  off_t offset, off_t bytes, off_t total_bytes, int flag)
+{
+ o->name= name;
+ o->partno= partno;
+ o->total_parts= total_parts;
+ o->offset= offset;
+ o->bytes= bytes;
+ o->total_bytes= total_bytes;
+ return(1);
+}
+
+
+int Splitpart__read_next_num(char *base_pt, char **next_pt, off_t *num,
+                             int flag)
+{
+ char *cpt, *ept, scale[4];
+
+ *num= 0;
+ for(cpt= base_pt; *cpt!=0 && !isdigit(*cpt); cpt++);
+ if(*cpt==0)
+   return(0);
+ for(ept= cpt; *ept!=0 && isdigit(*ept); ept++)
+   *num= (*num)*10+(*ept)-'0';
+ scale[0]= '1';
+ scale[1]= *ept;
+ scale[2]= 0;
+ *num *= (off_t) Scanf_io_size(scale, 0);
+ if(*ept!=0)
+   ept++;
+ *next_pt= ept;
+ return(1);
+}
+
+
+int Splitpart__parse(char *name, int *partno, int *total_parts,
+                    off_t *offset, off_t *bytes, off_t *total_bytes, int flag)
+
+{
+ int ret; 
+ off_t num;
+ char *cpt, *ept;
+
+ cpt= name;
+ ret= Splitpart__read_next_num(name, &ept, &num, 0);
+ if(ret<=0)
+   return(ret);
+ *partno= num;
+ cpt= ept;
+ ret= Splitpart__read_next_num(name, &ept, &num, 0);
+ if(ret<=0)
+   return(ret);
+ *total_parts= num;
+ cpt= ept;
+ ret= Splitpart__read_next_num(name, &ept, offset, 0);
+ if(ret<=0)
+   return(ret);
+ cpt= ept;
+ ret= Splitpart__read_next_num(name, &ept, bytes, 0);
+ if(ret<=0)
+   return(ret);
+ cpt= ept;
+ ret= Splitpart__read_next_num(name, &ept, total_bytes, 0);
+ if(ret<=0)
+   return(ret);
+ return(1);
+}
+
+
+/* ---------------------------- End SplitparT ------------------------- */
+
 /* ------------------------------- Xorriso -------------------------------- */
 
 /** The list of startup file names */
@@ -4222,6 +4341,7 @@ much_too_long:;
  return(1);
 }
 
+
 /*
    @param result  Bitfield indicationg type of mismatch
                bit0= disk_adr not existing
diff --git a/xorriso/xorriso_private.h b/xorriso/xorriso_private.h
index acec4194..41c51bcf 100644
--- a/xorriso/xorriso_private.h
+++ b/xorriso/xorriso_private.h
@@ -427,5 +427,17 @@ int Findjob_set_start_path(struct FindjoB *o, char *start_path, int flag);
 int Findjob_get_start_path(struct FindjoB *o, char **start_path, int flag);
 
 
+struct SplitparT;
+
+int Splitparts_new(struct SplitparT **o, int count, int flag);
+
+int Splitparts_destroy(struct SplitparT **o, int count, int flag);
+
+int Splitpart_set(struct SplitparT *o, char *name, int partno, int total_parts,
+                  off_t offset, off_t bytes, off_t total_bytes, int flag);
+
+int Splitpart__parse(char *name, int *partno, int *total_parts,
+                    off_t *offset, off_t *bytes, off_t *total_bytes, int flag);
+
 #endif /* Xorriso_private_includeD */
 
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index e751d6e0..19e98bbd 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2008.03.20.210522"
+#define Xorriso_timestamP "2008.03.22.130031"
diff --git a/xorriso/xorrisoburn.c b/xorriso/xorrisoburn.c
index ec7824ea..89f52eb1 100644
--- a/xorriso/xorrisoburn.c
+++ b/xorriso/xorrisoburn.c
@@ -4833,3 +4833,93 @@ int Xorriso_iso_file_close(struct XorrisO *xorriso, void **stream, int flag)
 }
 
 
+int Xorriso_identify_split(struct XorrisO *xorriso, char *iso_adr,
+                           struct SplitparT **parts, int *count, int flag)
+{
+ int ret, i;
+ int partno, total_parts, first_total_parts= -1;
+ off_t offset, bytes, total_bytes, first_total_bytes= -1;
+ IsoImage *volume;
+ IsoDir *dir_node;
+ IsoDirIter *iter= NULL;
+ IsoNode *node;
+ char *name;
+ struct stat stbuf, first_stbuf;
+
+ *count= 0;
+ *parts= NULL;
+
+ ret= Xorriso_get_volume(xorriso, &volume, 0);
+ if(ret<=0)
+   return(-1);
+ ret= Xorriso_node_from_path(xorriso, volume, iso_adr, &node, 1);
+ if(ret<=0)
+   return(-1);
+ if(!LIBISO_ISDIR(node))
+   return(0);
+ dir_node= (IsoDir *) node;
+
+ ret= iso_dir_get_children(dir_node, &iter);
+ if(ret<0) {
+cannot_iter:;
+   Xorriso_cannot_create_iter(xorriso, ret, 0);
+   return(-1);
+ }
+
+ for(i= 0; iso_dir_iter_next(iter, &node) == 1; ) {
+   name= (char *) iso_node_get_name(node);
+   ret= Splitpart__parse(name, &partno, &total_parts,
+                         &offset, &bytes, &total_bytes, 0);
+   if(ret<=0)
+     {ret= 0; goto ex;}
+   if(i==0) {
+     first_total_parts= total_parts;
+     first_total_bytes= total_bytes;
+     Xorriso_fake_stbuf(xorriso, "", &first_stbuf, &node, 1);
+   } else {
+     if(first_total_parts!=total_parts || first_total_bytes!=total_bytes)
+       {ret= 0; goto ex;}
+     Xorriso_fake_stbuf(xorriso, "", &stbuf, &node, 1);
+     if(first_stbuf.st_mode != stbuf.st_mode ||
+        first_stbuf.st_uid != stbuf.st_uid ||
+        first_stbuf.st_gid != stbuf.st_gid ||
+        first_stbuf.st_mtime != stbuf.st_mtime ||
+        first_stbuf.st_ctime != stbuf.st_ctime ||
+        first_stbuf.st_atime != stbuf.st_atime)
+       {ret= 0; goto ex;} 
+   }
+   (*count)++;
+ }
+ if((*count)<=0)
+   {ret= 0; goto ex;}
+
+ ret= Splitparts_new(parts, (*count)+1, 0); /* (have one end marker item) */
+ if(ret<=0)
+   return(ret);
+
+ iso_dir_iter_free(iter);
+ ret= iso_dir_get_children(dir_node, &iter);
+ if(ret<0)
+   goto cannot_iter;
+ for(i= 0; i<*count; i++) {
+   name= (char *) iso_node_get_name(node);
+   ret= Splitpart__parse(name, &partno, &total_parts,
+                         &offset, &bytes, &total_bytes, 0);
+   if(ret<=0)
+     {ret= 0; goto ex;}
+   Splitpart_set(parts[i], name, partno, total_parts, offset, bytes,
+                 total_bytes, 0);
+ }
+
+ /* >>> ??? sort list ? */
+ /* >>> check for equal frequency */;
+ /* >>> check for disjointness */
+ /* >>> check for plausible size */
+
+ ret= 1;
+ex:;
+ if(iter!=NULL)
+   iso_dir_iter_free(iter);
+ return(ret);
+}
+
diff --git a/xorriso/xorrisoburn.h b/xorriso/xorrisoburn.h
index 51de1ff4..96ba7ae8 100644
--- a/xorriso/xorrisoburn.h
+++ b/xorriso/xorrisoburn.h
@@ -195,5 +195,10 @@ int Xorriso_copy_properties(struct XorrisO *xorriso,
 int Xorriso_cut_out(struct XorrisO *xorriso, char *disk_path,
                 off_t startbyte, off_t bytecount, char *iso_rr_path, int flag);
 
+struct SplitparT;
+
+int Xorriso_identify_split(struct XorrisO *xorriso, char *iso_adr,
+                           struct SplitparT **parts, int *count, int flag);
+
 #endif /* Xorrisoburn_includeD */