New API call iso_write_opts_set_allow_7bit_ascii().

libisofs/ecma119.c

@@ -1674,6 +1674,7 @@ int ecma119_image_new(IsoImage *src, IsoWriteOpts *opts, Ecma119Image **img)
     target->no_force_dots = opts->no_force_dots;
     target->allow_lowercase = opts->allow_lowercase;
     target->allow_full_ascii = opts->allow_full_ascii;
+    target->allow_7bit_ascii = opts->allow_7bit_ascii;
     target->relaxed_vol_atts = opts->relaxed_vol_atts;
     target->joliet_longer_paths = opts->joliet_longer_paths;
     target->joliet_long_names = opts->joliet_long_names;
@@ -2756,6 +2757,16 @@ int iso_write_opts_set_allow_full_ascii(IsoWriteOpts *opts, int allow)
     return ISO_SUCCESS;
 }
 
+int iso_write_opts_set_allow_7bit_ascii(IsoWriteOpts *opts, int allow)
+{
+    if (opts == NULL) {
+        return ISO_NULL_POINTER;
+    }
+    opts->allow_7bit_ascii = allow ? 1 : 0;
+    return ISO_SUCCESS;
+}
+
+
 int iso_write_opts_set_relaxed_vol_atts(IsoWriteOpts *opts, int allow)
 {
     if (opts == NULL) {

libisofs/ecma119.h

@@ -149,6 +149,13 @@ struct iso_write_opts {
      */
     unsigned int allow_full_ascii :1;
 
+    /**
+     * If not allow_full_ascii is set: allow all 7 bit characters that would
+     * be allowed by allow_full_ascii. But still map lowercase to uppercase if
+     * not allow_lowercase is set to 1.
+     */
+    unsigned int allow_7bit_ascii :1;
+
     /**
      * Allow all characters to be part of Volume and Volset identifiers on
      * the Primary Volume Descriptor. This breaks ISO-9660 contraints, but
@@ -477,6 +484,7 @@ struct ecma119_image
     unsigned int no_force_dots :2;
     unsigned int allow_lowercase :1;
     unsigned int allow_full_ascii :1;
+    unsigned int allow_7bit_ascii :1;
 
     unsigned int relaxed_vol_atts : 1;
 

libisofs/ecma119_tree.c

@@ -59,6 +59,8 @@ int get_iso_name(Ecma119Image *img, IsoNode *iso, char **name)
     } else {
         relaxed = (int)img->allow_lowercase;
     }
+    if (img->allow_7bit_ascii)
+        relaxed |= 4;
     if (iso->type == LIBISO_DIR && !(img->allow_dir_id_ext)) {
         if (img->untranslated_name_len > 0) {
             if (strlen(ascii_name) > img->untranslated_name_len) {
@@ -1234,7 +1236,7 @@ int ecma119_tree_create(Ecma119Image *img)
 
         /*
          * and we need to remangle the root directory, as the function
-         * above could insert new directories into the root.
+         * above could insert new directories into the relocation directory.
          * Note that recurse = 0, as we don't need to recurse.
          */
 

libisofs/libisofs.h

@@ -1615,6 +1615,8 @@ int iso_write_opts_set_no_force_dots(IsoWriteOpts *opts, int no);
  * Allow lowercase characters in ISO-9660 filenames. By default, only
  * uppercase characters, numbers and a few other characters are allowed.
  * This breaks ECMA-119 specification. Use with caution.
+ * If lowercase is not allowed then those letters get mapped to uppercase
+ * letters.
  *
  * @since 0.6.2
  */
@@ -1629,6 +1631,20 @@ int iso_write_opts_set_allow_lowercase(IsoWriteOpts *opts, int allow);
  */
 int iso_write_opts_set_allow_full_ascii(IsoWriteOpts *opts, int allow);
 
+/**
+ * If not iso_write_opts_set_allow_full_ascii() is set to 1:
+ * Allow all 7-bit characters that would be allowed by allow_full_ascii, but
+ * map lowercase to uppercase if iso_write_opts_set_allow_lowercase()
+ * is not set to 1.
+ * @param opts    
+ *      The option set to be manipulated.
+ * @param allow
+ *      If not zero, then allow what is described above.
+ *
+ * @since 1.2.2
+ */
+int iso_write_opts_set_allow_7bit_ascii(IsoWriteOpts *opts, int allow);
+
 /**
  * Allow all characters to be part of Volume and Volset identifiers on
  * the Primary Volume Descriptor. This breaks ISO-9660 contraints, but

libisofs/libisofs.ver

@@ -265,6 +265,7 @@ iso_write_opts_get_data_start;
 iso_write_opts_new;
 iso_write_opts_set_aaip;
 iso_write_opts_set_aaip_susp_1_10;
+iso_write_opts_set_allow_7bit_ascii;
 iso_write_opts_set_allow_deep_paths;
 iso_write_opts_set_allow_dir_id_ext;
 iso_write_opts_set_allow_full_ascii;

libisofs/util.c

@@ -685,17 +685,27 @@ static int valid_j_char(uint16_t c)
         && cmp_ucsbe(&c, '\\');
 }
 
+/* @param relaxed bit0+1  0= strict ECMA-119
+                          1= additionally allow lowercase (else map to upper)
+                          2= allow all 8-bit characters
+                  bit2    allow all 7-bit characters (but map to upper if
+                          not bit0+1 == 2)
+*/
 static char map_fileid_char(char c, int relaxed)
 {
     char upper;
 
-    if (relaxed == 2) /* all chars are allowed */
+    if (c == '/')  /* Allowing slashes would cause lots of confusion */
+        return '_';
+    if ((relaxed & 3) == 2)
         return c;
     if (valid_d_char(c))
         return c;
+    if ((relaxed & 4) && (c & 0x7f) == c && (c < 'a' || c > 'z'))
+        return c; 
     upper= toupper(c);
     if (valid_d_char(upper)) {
-        if (relaxed) {
+        if (relaxed & 3) {
             /* lower chars are allowed */
             return c;
         }
@@ -871,8 +881,11 @@ char *iso_2_fileid(const char *src)
  * @param size
  *     Max len for the name
  * @param relaxed
- *     0 only allow d-characters, 1 allow also lowe case chars, 
+ *     bit0+1: 0 only allow d-characters,
- *     2 allow all characters 
+ *             1 allow also lowe case chars, 
+ *             2 allow all 8-bit characters,
+ *     bit2:   allow 7-bit characters (but map lowercase to uppercase if
+ *             not bit0+1 == 2)
  */
 char *iso_r_dirid(const char *src, int size, int relaxed)
 {
@@ -930,8 +943,11 @@ char *iso_r_dirid(const char *src, int size, int relaxed)
  * @param len
  *     Max len for the name, without taken the "." into account.
  * @param relaxed
- *     0 only allow d-characters, 1 allow also lowe case chars, 
+ *     bit0+1: 0 only allow d-characters,
- *     2 allow all characters 
+ *             1 allow also lowe case chars, 
+ *             2 allow all 8-bit characters,
+ *     bit2:   allow 7-bit characters (but map lowercase to uppercase if
+ *             not bit0+1 == 2)
  * @param forcedot
  *     Whether to ensure that "." is added
  */