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Function to generate relaxed ISO filenames.

Browse Source
release-1.5.4.branch
Vreixo Formoso 15 years ago
parent 4da469a3bf
commit c3582226f3
3 changed files with 250 additions and 0 deletions
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102
src/util.c
Unescape Escape View File

@ -507,6 +507,108 @@ char *iso_2_fileid(const char *src)
return strdup(dest);
}
/**
* Create a file/dir name suitable for an ISO image with relaxed constraints.
*
* @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,
* 2 allow all characters
* @param forcedot
* Whether to ensure that "." is added
*/
char *iso_r_id(const char *src, size_t len, int relaxed, int forcedot)
{
char *dot;
int lname, lext, lnname, lnext, pos, i;
char *dest = alloca(len + 1 + 1);
if (src == NULL) {
return NULL;
}
dot = strrchr(src, '.');
/*
* Since the maximum length can be divided freely over the name and
* extension, we need to calculate their new lengths (lnname and
* lnext). If the original filename is too long, we start by trimming
* the extension, but keep a minimum extension length of 3.
*/
if (dot == NULL || *(dot + 1) == '\0') {
lname = strlen(src);
lnname = (lname > len) ? len : lname;
lext = lnext = 0;
} else {
lext = strlen(dot + 1);
lname = strlen(src) - lext - 1;
lnext = (strlen(src) > len + 1 && lext > 3) ?
(lname < len - 3 ? len - lname : 3)
: lext;
lnname = (strlen(src) > len + 1) ? len - lnext : lname;
}
if (lnname == 0 && lnext == 0) {
return NULL;
}
pos = 0;
/* Convert up to lnname characters of the filename. */
for (i = 0; i < lnname; i++) {
char c= src[i];
if (relaxed == 2) {
/* all chars are allowed */
dest[pos++] = c;
} else if (valid_d_char(c)) {
/* it is a valid char */
dest[pos++] = c;
} else {
c= toupper(src[i]);
if (valid_d_char(c)) {
if (relaxed) {
/* lower chars are allowed */
dest[pos++] = src[i];
} else {
dest[pos++] = c;
}
} else {
dest[pos++] = '_';
}
}
}
if (lnext > 0 || forcedot) {
dest[pos++] = '.';
}
/* Convert up to lnext characters of the extension, if any. */
for (i = lname + 1; i < lname + 1 + lnext; i++) {
char c= src[i];
if (relaxed == 2) {
/* all chars are allowed */
dest[pos++] = c;
} else if (valid_d_char(c)) {
/* it is a valid char */
dest[pos++] = c;
} else {
c= toupper(src[i]);
if (valid_d_char(c)) {
if (relaxed) {
/* lower chars are allowed */
dest[pos++] = src[i];
} else {
dest[pos++] = c;
}
} else {
dest[pos++] = '_';
}
}
}
dest[pos] = '\0';
return strdup(dest);
}
uint16_t *iso_j_file_id(const uint16_t *src)
{
uint16_t *dot;

13
src/util.h
Unescape Escape View File

@ -106,6 +106,19 @@ char *iso_1_fileid(const char *src);
*/
char *iso_2_fileid(const char *src);
/**
* Create a file/dir name suitable for an ISO image with relaxed constraints.
*
* @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,
* 2 allow all characters
* @param forcedot
* Whether to ensure that "." is added
*/
char *iso_r_id(const char *src, size_t len, int relaxed, int forcedot);
/**
* Create a Joliet file identifier that consists of name and extension. The
* combined name and extension length will not exceed 128 bytes, and the

135
test/test_util.c
Unescape Escape View File

@ -374,6 +374,140 @@ static void test_iso_2_fileid()
free(file);
}
static void test_iso_r_id()
{
char *file;
/* force dot */
file = iso_r_id("file1", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "FILE1.");
free(file);
/* and not */
file = iso_r_id("file1", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FILE1");
free(file);
/* allow lowercase */
file = iso_r_id("file1", 30, 1, 0);
CU_ASSERT_STRING_EQUAL(file, "file1");
free(file);
file = iso_r_id("file1", 30, 2, 0);
CU_ASSERT_STRING_EQUAL(file, "file1");
free(file);
/* force d-char and dot */
file = iso_r_id("fILe1", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "FILE1.");
free(file);
/* force d-char but not dot */
file = iso_r_id("fILe1", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FILE1");
free(file);
/* allow lower case but force dot */
file = iso_r_id("fILe1", 30, 1, 1);
CU_ASSERT_STRING_EQUAL(file, "fILe1.");
free(file);
file = iso_r_id("FILE1", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "FILE1.");
free(file);
file = iso_r_id(".EXT", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, ".EXT");
free(file);
file = iso_r_id(".EXT", 30, 1, 0);
CU_ASSERT_STRING_EQUAL(file, ".EXT");
free(file);
file = iso_r_id("file.ext", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "FILE.EXT");
free(file);
/* not force dot is the same in this case */
file = iso_r_id("fiLE.ext", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FILE.EXT");
free(file);
file = iso_r_id("fiLE.ext", 30, 2, 0);
CU_ASSERT_STRING_EQUAL(file, "fiLE.ext");
free(file);
file = iso_r_id("file.EXt", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "FILE.EXT");
free(file);
file = iso_r_id("FILE.EXT", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "FILE.EXT");
free(file);
file = iso_r_id("31 characters filename.extensio", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "31_CHARACTERS_FILENAME.EXTENSIO");
free(file);
file = iso_r_id("32 characters filename.extension", 30, 0, 1);
CU_ASSERT_STRING_EQUAL(file, "32_CHARACTERS_FILENAME.EXTENSIO");
free(file);
/* allow lowercase */
file = iso_r_id("31 characters filename.extensio", 30, 1, 1);
CU_ASSERT_STRING_EQUAL(file, "31_characters_filename.extensio");
free(file);
/* and all characters */
file = iso_r_id("31 characters filename.extensio", 30, 2, 1);
CU_ASSERT_STRING_EQUAL(file, "31 characters filename.extensio");
free(file);
file = iso_r_id("more than 30 characters filename.extension", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "MORE_THAN_30_CHARACTERS_FIL.EXT");
/* incrementing the size... */
file = iso_r_id("more than 30 characters filename.extension", 35, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "MORE_THAN_30_CHARACTERS_FILENAME.EXT");
file = iso_r_id("more than 30 characters filename.extension", 36, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "MORE_THAN_30_CHARACTERS_FILENAME.EXTE");
free(file);
file = iso_r_id("file.bigext", 30, 1, 0);
CU_ASSERT_STRING_EQUAL(file, "file.bigext");
free(file);
file = iso_r_id(".bigext", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, ".BIGEXT");
/* "strange" characters */
file = iso_r_id("file<:a.ext", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FILE__A.EXT");
free(file);
file = iso_r_id("file<:a.ext", 30, 1, 0);
CU_ASSERT_STRING_EQUAL(file, "file__a.ext");
free(file);
file = iso_r_id("file<:a.ext", 30, 2, 0);
CU_ASSERT_STRING_EQUAL(file, "file<:a.ext");
free(file);
/* multiple dots */
file = iso_r_id("fi.le.a.ext", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FI_LE_A.EXT");
free(file);
file = iso_r_id("fi.le.a.ext", 30, 1, 0);
CU_ASSERT_STRING_EQUAL(file, "fi_le_a.ext");
free(file);
file = iso_r_id("fi.le.a.ext", 30, 2, 0);
CU_ASSERT_STRING_EQUAL(file, "fi.le.a.ext");
file = iso_r_id("file.<:a", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FILE.__A");
free(file);
file = iso_r_id("file<:a.--a", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "FILE__A.__A");
free(file);
file = iso_r_id(".file.bigext", 30, 0, 0);
CU_ASSERT_STRING_EQUAL(file, "_FILE.BIGEXT");
free(file);
file = iso_r_id(".file.bigext", 30, 2, 0);
CU_ASSERT_STRING_EQUAL(file, ".file.bigext");
free(file);
}
static void test_iso_rbtree_insert()
{
int res;
@ -509,6 +643,7 @@ void add_util_suite()
CU_add_test(pSuite, "iso_2_dirid()", test_iso_2_dirid);
CU_add_test(pSuite, "iso_1_fileid()", test_iso_1_fileid);
CU_add_test(pSuite, "iso_2_fileid()", test_iso_2_fileid);
CU_add_test(pSuite, "iso_r_id()", test_iso_r_id);
CU_add_test(pSuite, "iso_rbtree_insert()", test_iso_rbtree_insert);
CU_add_test(pSuite, "iso_htable_put/get()", test_iso_htable_put_get);
}

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