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add a delete call 

SVN revision: 12331
This commit is contained in:
Carsten Haitzler 2004-12-02 04:25:25 +00:00
parent e9cb529e2d
commit 26ca180c07
2 changed files with 91 additions and 25 deletions
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17
legacy/eet/src/lib/Eet.h
View File

@ -188,6 +188,23 @@ extern "C" {
* closed though).
*/
EAPI int eet_write (Eet_File *ef, char *name, void *data, int size, int compress);
/**
* Delete a specified entry from an Eet file being written or re-written
* @param ef A valid eet file handle opened for writing.
* @param name Name of the entry. eg: "/base/file_i_want".
* @return Success or failure of the delete.
*
* This function will delete the specified chunk of data from the eet file
* and return greater than 0 on success. 0 will be returned on failure.
*
* The eet file handle must be a valid file handle for an eet file opened
* for writing. If it is not, 0 will be returned and no action will be
* performed.
*
* Name, must not be NULL, otherwise 0 will be returned.
*/
EAPI int eet_delete(Eet_File *ef, char *name);
/**
* List all entries in eet file matching shell glob.

99
legacy/eet/src/lib/eet_lib.c
View File

@ -281,34 +281,37 @@ eet_flush(Eet_File *ef)
unsigned char *buf;
int buf_size;
int name_size;
name_size = strlen(ef->header->directory->hash[i].node[j].name);
buf_size = 20 + name_size;
buf = malloc(buf_size);
if (!buf) return;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].offset;
i2 = htonl(i1);
*((int *)(buf + 0)) = (int)i2;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].compression;
i2 = htonl(i1);
*((int *)(buf + 4)) = (int)i2;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].size;
i2 = htonl(i1);
*((int *)(buf + 8)) = (int)i2;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].data_size;
i2 = htonl(i1);
*((int *)(buf + 12)) = (int)i2;
i1 = (unsigned long int)name_size;
i2 = htonl(i1);
*((int *)(buf + 16)) = (int)i2;
memcpy(buf + 20, ef->header->directory->hash[i].node[j].name, name_size);
if (fwrite(buf, buf_size, 1, ef->fp) != 1)
if (ef->header->directory->hash[i].node[j].compression >= 0)
{
name_size = strlen(ef->header->directory->hash[i].node[j].name);
buf_size = 20 + name_size;
buf = malloc(buf_size);
if (!buf) return;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].offset;
i2 = htonl(i1);
*((int *)(buf + 0)) = (int)i2;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].compression;
i2 = htonl(i1);
*((int *)(buf + 4)) = (int)i2;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].size;
i2 = htonl(i1);
*((int *)(buf + 8)) = (int)i2;
i1 = (unsigned long int)ef->header->directory->hash[i].node[j].data_size;
i2 = htonl(i1);
*((int *)(buf + 12)) = (int)i2;
i1 = (unsigned long int)name_size;
i2 = htonl(i1);
*((int *)(buf + 16)) = (int)i2;
memcpy(buf + 20, ef->header->directory->hash[i].node[j].name, name_size);
if (fwrite(buf, buf_size, 1, ef->fp) != 1)
{
free(buf);
return;
}
offset += buf_size;
free(buf);
return;
}
offset += buf_size;
free(buf);
}
}
/* write data */
@ -914,6 +917,7 @@ eet_write(Eet_File *ef, char *name, void *data, int size, int compress)
ef->header->directory->hash[hash].node[i].data_size = size;
ef->header->directory->hash[hash].node[i].data = data2;
exists_already = 1;
break;
}
}
}
@ -946,6 +950,51 @@ eet_write(Eet_File *ef, char *name, void *data, int size, int compress)
return data_size;
}
int
eet_delete(Eet_File *ef, char *name)
{
int hash, node_size;
Eet_File_Node *node;
int exists_already = 0;
/* check to see its' an eet file pointer */
if ((!ef) || (ef->magic != EET_MAGIC_FILE)
|| (!name) ||
((ef->mode != EET_FILE_MODE_WRITE) &&
(ef->mode != EET_FILE_MODE_RW)))
return 0;
if (!ef->header) return 0;
/* figure hash bucket */
hash = eet_hash_gen(name, ef->header->directory->size);
node_size = ef->header->directory->hash[hash].size;
/* Does this node already exist? */
if (ef->mode == EET_FILE_MODE_RW)
{
int i;
for (i = 0; i < node_size; i++)
{
/* if it matches */
if (eet_string_match(ef->header->directory->hash[hash].node[i].name, name))
{
free(ef->header->directory->hash[hash].node[i].data);
ef->header->directory->hash[hash].node[i].compression = -1;
ef->header->directory->hash[hash].node[i].size = 0;
ef->header->directory->hash[hash].node[i].data_size = 0;
ef->header->directory->hash[hash].node[i].data = NULL;
exists_already = 1;
break;
}
}
}
/* flags that writes are pending */
if (exists_already) ef->writes_pending = 1;
/* update access time */
return exists_already;
}
char **
eet_list(Eet_File *ef, char *glob, int *count_ret)
{