99 static void jas_stream_destroy(jas_stream_t *stream);
101 static void jas_stream_initbuf(jas_stream_t *stream, int bufmode, char *buf,
150     jas_stream_t *stream;  in jas_stream_create()  local
152     if (!(stream = jas_malloc(sizeof(jas_stream_t)))) {  in jas_stream_create()
155     stream->openmode_ = 0;  in jas_stream_create()
156     stream->bufmode_ = 0;  in jas_stream_create()
157     stream->flags_ = 0;  in jas_stream_create()
158     stream->bufbase_ = 0;  in jas_stream_create()
159     stream->bufstart_ = 0;  in jas_stream_create()
160     stream->bufsize_ = 0;  in jas_stream_create()
161     stream->ptr_ = 0;  in jas_stream_create()
162     stream->cnt_ = 0;  in jas_stream_create()
163     stream->ops_ = 0;  in jas_stream_create()
164     stream->obj_ = 0;  in jas_stream_create()
165     stream->rwcnt_ = 0;  in jas_stream_create()
166     stream->rwlimit_ = -1;  in jas_stream_create()
168     return stream;  in jas_stream_create()
173     jas_stream_t *stream;  in jas_stream_memopen()  local
176     if (!(stream = jas_stream_create())) {  in jas_stream_memopen()
182     stream->openmode_ = JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY;  in jas_stream_memopen()
187     jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);  in jas_stream_memopen()
190     stream->ops_ = &jas_stream_memops;  in jas_stream_memopen()
194         jas_stream_destroy(stream);  in jas_stream_memopen()
197     stream->obj_ = (void *) obj;  in jas_stream_memopen()
219         jas_stream_close(stream);  in jas_stream_memopen()
233     return stream;  in jas_stream_memopen()
238     jas_stream_t *stream;  in jas_stream_fopen()  local
243     if (!(stream = jas_stream_create())) {  in jas_stream_fopen()
248     stream->openmode_ = jas_strtoopenmode(mode);  in jas_stream_fopen()
251     if ((stream->openmode_ & JAS_STREAM_READ) &&  in jas_stream_fopen()
252       (stream->openmode_ & JAS_STREAM_WRITE)) {  in jas_stream_fopen()
254     } else if (stream->openmode_ & JAS_STREAM_READ) {  in jas_stream_fopen()
256     } else if (stream->openmode_ & JAS_STREAM_WRITE) {  in jas_stream_fopen()
261     if (stream->openmode_ & JAS_STREAM_APPEND) {  in jas_stream_fopen()
264     if (stream->openmode_ & JAS_STREAM_BINARY) {  in jas_stream_fopen()
267     if (stream->openmode_ & JAS_STREAM_CREATE) {  in jas_stream_fopen()
273         jas_stream_destroy(stream);  in jas_stream_fopen()
279     stream->obj_ = (void *) obj;  in jas_stream_fopen()
282     stream->ops_ = &jas_stream_fileops;  in jas_stream_fopen()
286         jas_stream_destroy(stream);  in jas_stream_fopen()
291     jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);  in jas_stream_fopen()
293     return stream;  in jas_stream_fopen()
298     jas_stream_t *stream;  in jas_stream_freopen()  local
305     if (!(stream = jas_stream_create())) {  in jas_stream_freopen()
310     stream->openmode_ = jas_strtoopenmode(mode);  in jas_stream_freopen()
313     if ((stream->openmode_ & JAS_STREAM_READ) &&  in jas_stream_freopen()
314       (stream->openmode_ & JAS_STREAM_WRITE)) {  in jas_stream_freopen()
316     } else if (stream->openmode_ & JAS_STREAM_READ) {  in jas_stream_freopen()
318     } else if (stream->openmode_ & JAS_STREAM_WRITE) {  in jas_stream_freopen()
323     if (stream->openmode_ & JAS_STREAM_APPEND) {  in jas_stream_freopen()
326     if (stream->openmode_ & JAS_STREAM_BINARY) {  in jas_stream_freopen()
329     if (stream->openmode_ & JAS_STREAM_CREATE) {  in jas_stream_freopen()
333     stream->obj_ = JAS_CAST(void *, fp);  in jas_stream_freopen()
336     stream->ops_ = &jas_stream_sfileops;  in jas_stream_freopen()
339     jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);  in jas_stream_freopen()
341     return stream;  in jas_stream_freopen()
346     jas_stream_t *stream;  in jas_stream_tmpfile()  local
350     if (!(stream = jas_stream_create())) {  in jas_stream_tmpfile()
356     stream->openmode_ = JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY;  in jas_stream_tmpfile()
360         jas_stream_destroy(stream);  in jas_stream_tmpfile()
365     stream->obj_ = obj;  in jas_stream_tmpfile()
376         jas_stream_destroy(stream);  in jas_stream_tmpfile()
385         jas_stream_destroy(stream);  in jas_stream_tmpfile()
393         jas_stream_destroy(stream);  in jas_stream_tmpfile()
398     jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);  in jas_stream_tmpfile()
400     stream->ops_ = &jas_stream_fileops;  in jas_stream_tmpfile()
402     return stream;  in jas_stream_tmpfile()
407     jas_stream_t *stream;  in jas_stream_fdopen()  local
411     if (!(stream = jas_stream_create())) {  in jas_stream_fdopen()
416     stream->openmode_ = jas_strtoopenmode(mode);  in jas_stream_fdopen()
430     if (stream->openmode_ & JAS_STREAM_BINARY) {  in jas_stream_fdopen()
437         jas_stream_destroy(stream);  in jas_stream_fdopen()
443     stream->obj_ = (void *) obj;  in jas_stream_fdopen()
450     jas_stream_initbuf(stream, JAS_STREAM_FULLBUF, 0, 0);  in jas_stream_fdopen()
453     stream->ops_ = &jas_stream_fileops;  in jas_stream_fdopen()
455     return stream;  in jas_stream_fdopen()
458 static void jas_stream_destroy(jas_stream_t *stream)  in jas_stream_destroy()  argument
462     if ((stream->bufmode_ & JAS_STREAM_FREEBUF) && stream->bufbase_) {  in jas_stream_destroy()
463         jas_free(stream->bufbase_);  in jas_stream_destroy()
464         stream->bufbase_ = 0;  in jas_stream_destroy()
466     jas_free(stream);  in jas_stream_destroy()
469 int jas_stream_close(jas_stream_t *stream)  in jas_stream_close()  argument
472     jas_stream_flush(stream);  in jas_stream_close()
475     (*stream->ops_->close_)(stream->obj_);  in jas_stream_close()
477     jas_stream_destroy(stream);  in jas_stream_close()
486 int jas_stream_getc_func(jas_stream_t *stream)  in jas_stream_getc_func()  argument
488     assert(stream->ptr_ - stream->bufbase_ <= stream->bufsize_ +  in jas_stream_getc_func()
490     return jas_stream_getc_macro(stream);  in jas_stream_getc_func()
493 int jas_stream_putc_func(jas_stream_t *stream, int c)  in jas_stream_putc_func()  argument
495     assert(stream->ptr_ - stream->bufstart_ <= stream->bufsize_);  in jas_stream_putc_func()
496     return jas_stream_putc_macro(stream, c);  in jas_stream_putc_func()
499 int jas_stream_ungetc(jas_stream_t *stream, int c)  in jas_stream_ungetc()  argument
501     if (!stream->ptr_ || stream->ptr_ == stream->bufbase_) {  in jas_stream_ungetc()
507     stream->flags_ &= ~JAS_STREAM_EOF;  in jas_stream_ungetc()
509     --stream->rwcnt_;  in jas_stream_ungetc()
510     --stream->ptr_;  in jas_stream_ungetc()
511     ++stream->cnt_;  in jas_stream_ungetc()
512     *stream->ptr_ = c;  in jas_stream_ungetc()
516 int jas_stream_read(jas_stream_t *stream, void *buf, int cnt)  in jas_stream_read()  argument
526         if ((c = jas_stream_getc(stream)) == EOF) {  in jas_stream_read()
536 int jas_stream_write(jas_stream_t *stream, const void *buf, int cnt)  in jas_stream_write()  argument
545         if (jas_stream_putc(stream, *bufptr) == EOF) {  in jas_stream_write()
558 int jas_stream_printf(jas_stream_t *stream, const char *fmt, ...)  in jas_stream_printf()  argument
566     jas_stream_puts(stream, buf);  in jas_stream_printf()
571 int jas_stream_puts(jas_stream_t *stream, const char *s)  in jas_stream_puts()  argument
574         if (jas_stream_putc_macro(stream, *s) == EOF) {  in jas_stream_puts()
582 char *jas_stream_gets(jas_stream_t *stream, char *buf, int bufsize)  in jas_stream_gets()  argument
590         if ((c = jas_stream_getc(stream)) == EOF) {  in jas_stream_gets()
603 int jas_stream_gobble(jas_stream_t *stream, int n)  in jas_stream_gobble()  argument
608         if (jas_stream_getc(stream) == EOF) {  in jas_stream_gobble()
615 int jas_stream_pad(jas_stream_t *stream, int n, int c)  in jas_stream_pad()  argument
620         if (jas_stream_putc(stream, c) == EOF)  in jas_stream_pad()
630 int jas_stream_isseekable(jas_stream_t *stream)  in jas_stream_isseekable()  argument
632     if (stream->ops_ == &jas_stream_memops) {  in jas_stream_isseekable()
634     } else if (stream->ops_ == &jas_stream_fileops) {  in jas_stream_isseekable()
635         if ((*stream->ops_->seek_)(stream->obj_, 0, SEEK_CUR) < 0) {  in jas_stream_isseekable()
644 int jas_stream_rewind(jas_stream_t *stream)  in jas_stream_rewind()  argument
646     return jas_stream_seek(stream, 0, SEEK_SET);  in jas_stream_rewind()
649 long jas_stream_seek(jas_stream_t *stream, long offset, int origin)  in jas_stream_seek()  argument
654     assert(!((stream->bufmode_ & JAS_STREAM_RDBUF) && (stream->bufmode_ &  in jas_stream_seek()
658     stream->flags_ &= ~JAS_STREAM_EOF;  in jas_stream_seek()
660     if (stream->bufmode_ & JAS_STREAM_RDBUF) {  in jas_stream_seek()
662             offset -= stream->cnt_;  in jas_stream_seek()
664     } else if (stream->bufmode_ & JAS_STREAM_WRBUF) {  in jas_stream_seek()
665         if (jas_stream_flush(stream)) {  in jas_stream_seek()
669     stream->cnt_ = 0;  in jas_stream_seek()
670     stream->ptr_ = stream->bufstart_;  in jas_stream_seek()
671     stream->bufmode_ &= ~(JAS_STREAM_RDBUF | JAS_STREAM_WRBUF);  in jas_stream_seek()
673     if ((newpos = (*stream->ops_->seek_)(stream->obj_, offset, origin))  in jas_stream_seek()
681 long jas_stream_tell(jas_stream_t *stream)  in jas_stream_tell()  argument
686     if (stream->bufmode_ & JAS_STREAM_RDBUF) {  in jas_stream_tell()
687         adjust = -stream->cnt_;  in jas_stream_tell()
688     } else if (stream->bufmode_ & JAS_STREAM_WRBUF) {  in jas_stream_tell()
689         adjust = stream->ptr_ - stream->bufstart_;  in jas_stream_tell()
694     if ((offset = (*stream->ops_->seek_)(stream->obj_, 0, SEEK_CUR)) < 0) {  in jas_stream_tell()
705 static void jas_stream_initbuf(jas_stream_t *stream, int bufmode, char *buf,  in jas_stream_initbuf()  argument
710     assert(!stream->bufbase_);  in jas_stream_initbuf()
717             if ((stream->bufbase_ = jas_malloc(JAS_STREAM_BUFSIZE +  in jas_stream_initbuf()
719                 stream->bufmode_ |= JAS_STREAM_FREEBUF;  in jas_stream_initbuf()
720                 stream->bufsize_ = JAS_STREAM_BUFSIZE;  in jas_stream_initbuf()
724                 stream->bufbase_ = stream->tinybuf_;  in jas_stream_initbuf()
725                 stream->bufsize_ = 1;  in jas_stream_initbuf()
732             stream->bufbase_ = JAS_CAST(uchar *, buf);  in jas_stream_initbuf()
733             stream->bufsize_ = bufsize - JAS_STREAM_MAXPUTBACK;  in jas_stream_initbuf()
740         stream->bufbase_ = stream->tinybuf_;  in jas_stream_initbuf()
741         stream->bufsize_ = 1;  in jas_stream_initbuf()
743     stream->bufstart_ = &stream->bufbase_[JAS_STREAM_MAXPUTBACK];  in jas_stream_initbuf()
744     stream->ptr_ = stream->bufstart_;  in jas_stream_initbuf()
745     stream->cnt_ = 0;  in jas_stream_initbuf()
746     stream->bufmode_ |= bufmode & JAS_STREAM_BUFMODEMASK;  in jas_stream_initbuf()
753 int jas_stream_flush(jas_stream_t *stream)  in jas_stream_flush()  argument
755     if (stream->bufmode_ & JAS_STREAM_RDBUF) {  in jas_stream_flush()
758     return jas_stream_flushbuf(stream, EOF);  in jas_stream_flush()
761 int jas_stream_fillbuf(jas_stream_t *stream, int getflag)  in jas_stream_fillbuf()  argument
766     if ((stream->flags_ & (JAS_STREAM_ERRMASK)) != 0) {  in jas_stream_fillbuf()
771     if ((stream->openmode_ & JAS_STREAM_READ) == 0) {  in jas_stream_fillbuf()
778     assert((stream->bufmode_ & JAS_STREAM_WRBUF) == 0);  in jas_stream_fillbuf()
780     assert(stream->ptr_ - stream->bufstart_ <= stream->bufsize_);  in jas_stream_fillbuf()
783     stream->bufmode_ |= JAS_STREAM_RDBUF;  in jas_stream_fillbuf()
786     stream->ptr_ = stream->bufstart_;  in jas_stream_fillbuf()
787     if ((stream->cnt_ = (*stream->ops_->read_)(stream->obj_,  in jas_stream_fillbuf()
788       (char *) stream->bufstart_, stream->bufsize_)) <= 0) {  in jas_stream_fillbuf()
789         if (stream->cnt_ < 0) {  in jas_stream_fillbuf()
790             stream->flags_ |= JAS_STREAM_ERR;  in jas_stream_fillbuf()
792             stream->flags_ |= JAS_STREAM_EOF;  in jas_stream_fillbuf()
794         stream->cnt_ = 0;  in jas_stream_fillbuf()
798     assert(stream->cnt_ > 0);  in jas_stream_fillbuf()
800     c = (getflag) ? jas_stream_getc2(stream) : (*stream->ptr_);  in jas_stream_fillbuf()
805 int jas_stream_flushbuf(jas_stream_t *stream, int c)  in jas_stream_flushbuf()  argument
811     if ((stream->flags_ & (JAS_STREAM_ERRMASK)) != 0) {  in jas_stream_flushbuf()
816     if ((stream->openmode_ & (JAS_STREAM_WRITE | JAS_STREAM_APPEND)) == 0) {  in jas_stream_flushbuf()
821     assert(!(stream->bufmode_ & JAS_STREAM_RDBUF));  in jas_stream_flushbuf()
826     len = stream->ptr_ - stream->bufstart_;  in jas_stream_flushbuf()
828         n = (*stream->ops_->write_)(stream->obj_, (char *)  in jas_stream_flushbuf()
829           stream->bufstart_, len);  in jas_stream_flushbuf()
831             stream->flags_ |= JAS_STREAM_ERR;  in jas_stream_flushbuf()
835     stream->cnt_ = stream->bufsize_;  in jas_stream_flushbuf()
836     stream->ptr_ = stream->bufstart_;  in jas_stream_flushbuf()
838     stream->bufmode_ |= JAS_STREAM_WRBUF;  in jas_stream_flushbuf()
841         assert(stream->cnt_ > 0);  in jas_stream_flushbuf()
842         return jas_stream_putc2(stream, c);  in jas_stream_flushbuf()
905 long jas_stream_setrwcount(jas_stream_t *stream, long rwcnt)  in jas_stream_setrwcount()  argument
909     old = stream->rwcnt_;  in jas_stream_setrwcount()
910     stream->rwcnt_ = rwcnt;  in jas_stream_setrwcount()
914 int jas_stream_display(jas_stream_t *stream, FILE *fp, int n)  in jas_stream_display()  argument
936             if ((c = jas_stream_getc(stream)) == EOF) {  in jas_stream_display()
965 long jas_stream_length(jas_stream_t *stream)  in jas_stream_length()  argument
969     if ((oldpos = jas_stream_tell(stream)) < 0) {  in jas_stream_length()
972     if (jas_stream_seek(stream, 0, SEEK_END) < 0) {  in jas_stream_length()
975     if ((pos = jas_stream_tell(stream)) < 0) {  in jas_stream_length()
978     if (jas_stream_seek(stream, oldpos, SEEK_SET) < 0) {  in jas_stream_length()