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strlen fuction removed from BRZ algorithm

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fc_botelho
2006-07-28 22:36:50 +00:00
parent 32829274c4
commit 6bc95ace44
8 changed files with 98 additions and 73 deletions
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47
src/buffer_entry.c
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@@ -2,6 +2,7 @@
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
struct __buffer_entry_t
{
@@ -51,24 +52,40 @@ void buffer_entry_load(buffer_entry_t * buffer_entry)
buffer_entry->pos = 0;
}
cmph_uint8 * buffer_entry_read_key(buffer_entry_t * buffer_entry)
cmph_uint8 * buffer_entry_read_key(buffer_entry_t * buffer_entry, cmph_uint32 * keylen)
{
cmph_uint8 * buf = (cmph_uint8 *)malloc(BUFSIZ);
cmph_uint32 buf_pos = 0;
cmph_uint8 c;
while(1)
cmph_uint8 * buf = NULL;
cmph_uint32 lacked_bytes = sizeof(*keylen);
cmph_uint32 copied_bytes = 0;
if(buffer_entry->eof && (buffer_entry->pos == buffer_entry->nbytes)) // end
{
if(buffer_entry->eof && (buffer_entry->pos == buffer_entry->nbytes)) // end
{
free(buf);
return NULL;
}
if(buffer_entry->pos == buffer_entry->nbytes) buffer_entry_load(buffer_entry);
c = buffer_entry->buff[(buffer_entry->pos)++];
buf[buf_pos++] = c;
if(c == '\0') break;
if(buf_pos % BUFSIZ == 0) buf = (cmph_uint8 *)realloc(buf, buf_pos + BUFSIZ);
free(buf);
return NULL;
}
if((buffer_entry->pos + lacked_bytes) > buffer_entry->nbytes)
{
copied_bytes = buffer_entry->nbytes - buffer_entry->pos;
lacked_bytes = (buffer_entry->pos + lacked_bytes) - buffer_entry->nbytes;
if (copied_bytes != 0) memcpy(keylen, buffer_entry->buff + buffer_entry->pos, copied_bytes);
buffer_entry_load(buffer_entry);
}
memcpy(keylen + copied_bytes, buffer_entry->buff + buffer_entry->pos, lacked_bytes);
buffer_entry->pos += lacked_bytes;
lacked_bytes = *keylen;
copied_bytes = 0;
buf = (cmph_uint8 *)malloc(*keylen + sizeof(*keylen));
memcpy(buf, keylen, sizeof(*keylen));
if((buffer_entry->pos + lacked_bytes) > buffer_entry->nbytes) {
copied_bytes = buffer_entry->nbytes - buffer_entry->pos;
lacked_bytes = (buffer_entry->pos + lacked_bytes) - buffer_entry->nbytes;
if (copied_bytes != 0) {
memcpy(buf + sizeof(*keylen), buffer_entry->buff + buffer_entry->pos, copied_bytes);
}
buffer_entry_load(buffer_entry);
}
memcpy(buf+sizeof(*keylen)+copied_bytes, buffer_entry->buff + buffer_entry->pos, lacked_bytes);
buffer_entry->pos += lacked_bytes;
return buf;
}