123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107 |
- /* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
- * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
- *
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- *
- * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
- */
- #include "_stdio.h"
- #undef fgetc
- #undef fgetc_unlocked
- #undef getc
- #undef getc_unlocked
- #ifdef __DO_UNLOCKED
- int __fgetc_unlocked(FILE *stream)
- {
- __STDIO_STREAM_VALIDATE(stream);
- /* First the fast path. We're good to go if getc macro enabled. */
- if (__STDIO_STREAM_CAN_USE_BUFFER_GET(stream)) {
- return __STDIO_STREAM_BUFFER_GET(stream);
- }
- /* Next quickest... reading and narrow oriented, but macro
- * disabled and/or buffer is exhausted. */
- if (__STDIO_STREAM_IS_NARROW_READING(stream)
- || !__STDIO_STREAM_TRANS_TO_READ(stream, __FLAG_NARROW)
- ) {
- if (stream->__modeflags & __FLAG_UNGOT) { /* Use ungots first. */
- unsigned char uc = stream->__ungot[(stream->__modeflags--) & 1];
- stream->__ungot[1] = 0;
- __STDIO_STREAM_VALIDATE(stream);
- return uc;
- }
- if (__STDIO_STREAM_BUFFER_RAVAIL(stream)) { /* Have buffered? */
- return __STDIO_STREAM_BUFFER_GET(stream);
- }
- /* Is this a fake stream for *sscanf? */
- if (__STDIO_STREAM_IS_FAKE_VSSCANF(stream)) {
- __STDIO_STREAM_SET_EOF(stream);
- return EOF;
- }
- /* We need to read from the host environment, so we must
- * flush all line buffered streams if the stream is not
- * fully buffered. */
- if (!__STDIO_STREAM_IS_FBF(stream)) {
- __STDIO_FLUSH_LBF_STREAMS;
- }
- if (__STDIO_STREAM_BUFFER_SIZE(stream)) { /* Do we have a buffer? */
- __STDIO_STREAM_DISABLE_GETC(stream);
- if(__STDIO_FILL_READ_BUFFER(stream)) { /* Refill succeeded? */
- __STDIO_STREAM_ENABLE_GETC(stream); /* FBF or LBF */
- return __STDIO_STREAM_BUFFER_GET(stream);
- }
- } else {
- unsigned char uc;
- if (__stdio_READ(stream, &uc, 1)) {
- return uc;
- }
- }
- }
- return EOF;
- }
- libc_hidden_def(__fgetc_unlocked)
- strong_alias(__fgetc_unlocked,fgetc_unlocked)
- libc_hidden_def(fgetc_unlocked)
- strong_alias(__fgetc_unlocked,getc_unlocked)
- libc_hidden_def(getc_unlocked)
- #ifndef __UCLIBC_HAS_THREADS__
- strong_alias(__fgetc_unlocked,fgetc)
- libc_hidden_def(fgetc)
- strong_alias(__fgetc_unlocked,getc)
- #endif
- #elif defined __UCLIBC_HAS_THREADS__
- int fgetc(register FILE *stream)
- {
- if (stream->__user_locking != 0) {
- return __GETC_UNLOCKED_MACRO(stream);
- } else {
- int retval;
- __STDIO_ALWAYS_THREADLOCK(stream);
- retval = __GETC_UNLOCKED_MACRO(stream);
- __STDIO_ALWAYS_THREADUNLOCK(stream);
- return retval;
- }
- }
- libc_hidden_def(fgetc)
- strong_alias(fgetc,getc)
- #endif
|