j3d1/tinc
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Several fixes for the buffer code.

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This commit is contained in:
Guus Sliepen 2011-05-14 22:30:23 +02:00
parent cdb793f687
commit ffa3a443b9
3 changed files with 17 additions and 6 deletions
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17
src/buffer.c
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@ -22,6 +22,14 @@
#include "buffer.h"
#include "xalloc.h"
void buffer_compact(buffer_t *buffer) {
if(buffer->offset / 7 > buffer->len / 8) {
memmove(buffer->data, buffer->data + buffer->offset, buffer->len - buffer->offset);
buffer->len -= buffer->offset;
buffer->offset = 0;
}
}
// Make sure we can add size bytes to the buffer, and return a pointer to the start of those bytes.
char *buffer_prepare(buffer_t *buffer, int size) {
@ -41,8 +49,11 @@ char *buffer_prepare(buffer_t *buffer, int size) {
}
}
char *start = buffer->data + buffer->len;
buffer->len += size;
return buffer->data + buffer->offset;
return start;
}
// Copy data into the buffer.
@ -61,8 +72,6 @@ static char *buffer_consume(buffer_t *buffer, int size) {
if(buffer->offset >= buffer->len) {
buffer->offset = 0;
buffer->len = 0;
} else {
buffer->offset += size;
}
return start;
@ -76,7 +85,7 @@ char *buffer_readline(buffer_t *buffer) {
if(!newline)
return NULL;
int len = newline + 1 - buffer->data + buffer->offset;
int len = newline + 1 - (buffer->data + buffer->offset);
*newline = 0;
return buffer_consume(buffer, len);
}