diff -r c80c910fe191 -r abae4669fba7 ucx/memstream.c --- a/ucx/memstream.c Wed Oct 10 09:34:13 2012 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,118 +0,0 @@ -#include "memstream.h" -#include -#include -#include - -struct UcxMemstream { - void *space; - off_t pos; - size_t length; - _Bool autofree; -}; - -UcxMemstream *ucx_memopen(void *space, size_t length) { - UcxMemstream *stream = (UcxMemstream*) malloc(sizeof(UcxMemstream)); - if (stream) { - if (!space) { - stream->space = malloc(length); - if (!stream->space) { - free(stream); - return NULL; - } - memset(stream->space, 0, length); - stream->autofree = 1; - } else { - stream->space = space; - stream->autofree = 0; - } - stream->length = length; - - stream->pos = 0; - } - - return stream; -} - -void ucx_memclose(UcxMemstream *stream) { - if (stream->autofree) { - free(stream->space); - } - free(stream); -} - -int ucx_memseek(UcxMemstream *stream, off_t offset, int whence) { - off_t npos; - switch (whence) { - case SEEK_SET: - npos = 0; - break; - case SEEK_CUR: - npos = stream->pos; - break; - case SEEK_END: - npos = strlen(stream->space); - break; - } - - npos += offset; - - if (npos < 0 || npos > stream->length) { - return -1; - } else { - stream->pos = npos; - return 0; - } - -} - -int ucx_memeof(UcxMemstream *stream) { - return stream->pos >= stream->length; -} - -size_t ucx_memtell(UcxMemstream *stream) { - return stream->pos; -} - -size_t ucx_memio(void* d, size_t s, size_t n, UcxMemstream *m, _Bool read) { - size_t len; - if (m->pos + s*n > m->length) { - len = m->length - m->pos; - if (s > 1) len -= len%s; - } else { - len = s*n; - } - - if (len == 0) { - return 0; - } - - if (read) { - memcpy(d, (char*)m->space+m->pos, len); - } else { - memcpy((char*)m->space+m->pos, d, len); - } - m->pos += len; - - return len; -} - -int ucx_memputc(UcxMemstream *stream, int c) { - if (ucx_memeof(stream)) { - return EOF; - } else { - c &= 0xFF; - ((char*)(stream->space))[stream->pos] = (char) c; - stream->pos++; - return c; - } -} - -int ucx_memgetc(UcxMemstream *stream) { - if (ucx_memeof(stream)) { - return EOF; - } else { - int c = ((char*)(stream->space))[stream->pos]; - stream->pos++; - return c; - } -}