Enhance support for relaxe ISO constraints.

demo/ecma119_tree.c

@@ -12,6 +12,7 @@
 #include "filesrc.h"
 #include "node.h"
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -41,7 +42,7 @@ static void
 print_dir(Ecma119Node *dir, int level)
 {
     int i;
-    char sp[level * 2 + 1];
+    char *sp = alloca(level * 2 + 1);
 
     for (i = 0; i < level * 2; i += 2) {
         sp[i] = '|';

demo/iso.c

@@ -55,6 +55,7 @@ int main(int argc, char **argv)
         0, /* joliet */
         0, /* omit_version_numbers */
         0, /* allow_deep_paths */
+        0, /* allow_longer_paths */
         0, /* max_37_char_filenames */
         0, /* no_force_dots */
         0, /* allow_lowercase */

demo/iso_grow.c

@@ -38,6 +38,7 @@ int main(int argc, char **argv)
         0, /* joliet */
         0, /* omit_version_numbers */
         0, /* allow_deep_paths */
+        0, /* allow_longer_paths */
         0, /* max_37_char_filenames */
         0, /* no_force_dots */
         0, /* allow_lowercase */

demo/iso_modify.c

@@ -33,6 +33,7 @@ int main(int argc, char **argv)
         0, /* joliet */
         0, /* omit_version_numbers */
         0, /* allow_deep_paths */
+        0, /* allow_longer_paths */
         0, /* max_37_char_filenames */
         0, /* no_force_dots */
         0, /* allow_lowercase */

demo/iso_ms.c

@@ -33,6 +33,7 @@ int main(int argc, char **argv)
         0, /* joliet */
         0, /* omit_version_numbers */
         0, /* allow_deep_paths */
+        0, /* allow_longer_paths */
         0, /* max_37_char_filenames */
         0, /* no_force_dots */
         0, /* allow_lowercase */

src/ecma119.c

@@ -847,6 +847,7 @@ int ecma119_image_new(IsoImage *src, Ecma119WriteOpts *opts, Ecma119Image **img)
     target->omit_version_numbers = opts->omit_version_numbers 
                                  | opts->max_37_char_filenames;
     target->allow_deep_paths = opts->allow_deep_paths;
+    target->allow_longer_paths = opts->allow_longer_paths;
     target->max_37_char_filenames = opts->max_37_char_filenames;
     target->no_force_dots = opts->no_force_dots;
     target->allow_lowercase = opts->allow_lowercase;

src/ecma119.h

@@ -39,6 +39,7 @@ struct ecma119_image
     /* relaxed constraints */
     unsigned int omit_version_numbers :1;
     unsigned int allow_deep_paths :1;
+    unsigned int allow_longer_paths :1;
     unsigned int max_37_char_filenames :1;
     unsigned int no_force_dots :1;
     unsigned int allow_lowercase :1;

src/ecma119_tree.c

@@ -296,11 +296,17 @@ int create_tree(Ecma119Image *image, IsoNode *iso, Ecma119Node **tree,
         return ret;
     }
     max_path = pathlen + 1 + (iso_name ? strlen(iso_name) : 0);
-    if (!image->rockridge && !image->allow_deep_paths) {
+    if (!image->rockridge) {
-        if ((iso->type == LIBISO_DIR && depth > 8) || max_path > 255) {
+        if ((iso->type == LIBISO_DIR && depth > 8) && !image->allow_deep_paths) {
             iso_msg_note(image->image->messenger, LIBISO_FILE_IGNORED,
-                         "File \"%s\" can't be added, because depth > 8 "
+                         "File \"%s\" can't be added, because directory depth "
-                             "or path length over 255", iso->name);
+                         "is greater than  8.", iso->name);
+            free(iso_name);
+            return 0;
+        } else if (max_path > 255 && !image->allow_longer_paths) {
+            iso_msg_note(image->image->messenger, LIBISO_FILE_IGNORED,
+                         "File \"%s\" can't be added, because path length "
+                         "is greater than 255 characters", iso->name);
             free(iso_name);
             return 0;
         }

src/libisofs.h

@@ -100,13 +100,57 @@ typedef struct
     unsigned int rockridge :1;
     unsigned int joliet :1;
 
-    /* relaxed constraints */
+    /* 
+     * Relaxed constraints. Setting any of these to 1 break the specifications,
+     * but it is supposed to work on most moderns systems. Use with caution. 
+     */
+    
+    /**
+     * Omit the version number (";1") at the end of the ISO-9660 identifiers.
+     * Version numbers are usually not used.
+     */
     unsigned int omit_version_numbers :1;
+
+    /**
+     * Allow ISO-9660 directory hierarchy to be deeper than 8 levels. 
+     */
     unsigned int allow_deep_paths :1;
+
+    /**
+     * Allow path in the ISO-9660 tree to have more than 255 characters.
+     */
+    unsigned int allow_longer_paths :1;
+
+    /**
+     * Allow a single file or directory hierarchy to have up to 37 characters.
+     * This is larger than the 31 characters allowed by ISO level 2, and the
+     * extra space is taken from the version number, so this also forces
+     * omit_version_numbers.
+     */
     unsigned int max_37_char_filenames :1;
+
+    /**
+     * ISO-9660 forces filenames to have a ".", that separates file name from
+     * extension. libisofs adds it if original filename doesn't has one. Set 
+     * this to 1 to prevent this behavior
+     */
     unsigned int no_force_dots :1;
+    
+    /**
+     * Allow lowercase characters in ISO-9660 filenames. By default, only 
+     * uppercase characters, numbers and a few other characters are allowed. 
+     */
     unsigned int allow_lowercase :1;
+    
+    /**
+     * Allow all ASCII characters to be appear on an ISO-9660 filename. Note
+     * that "/" and "\0" characters are never allowed, even in RR names.
+     */
     unsigned int allow_full_ascii :1;
+    
+    /**
+     * Allow paths in the Joliet tree to have more than 240 characters.
+     */
     unsigned int joliet_longer_paths :1;
 
     /**< If files should be sorted based on their weight. */