Revert "lavu: add snprintf(), vsnprint() and strtod() replacements for MS runtime."

This reverts commit ba537202801d71711f1ef9306a6248dd2d426fa0.
A better implementation has been commited by the same author to qatar

Conflicts:

	configure

Found-by: jamal <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

6 files changed, 0 insertions, 268 deletions

diff --git a/compat/snprintf.c b/compat/snprintf.c
deleted file mode 100644
index c54c8e201b..0000000000
--- a/compat/snprintf.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * C99-compatible snprintf() and vsnprintf() implementations
- * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <limits.h>
-#include <string.h>
-
-#include "libavutil/error.h"
-#include "snprintf.h"
-
-#undef snprintf
-int avpriv_snprintf(char *restrict s, size_t n, const char *restrict fmt, ...)
-{
-    va_list ap;
-    int ret;
-
-    va_start(ap, fmt);
-    ret = avpriv_vsnprintf(s, n, fmt, ap);
-    va_end(ap);
-
-    return ret;
-}
-
-#undef vsnprintf
-int avpriv_vsnprintf(char *restrict s, size_t n, const char *restrict fmt,
-                     va_list ap)
-{
-    int ret;
-
-    if (n == 0)
-        return 0;
-    else if (n > INT_MAX)
-        return AVERROR(EINVAL);
-
-    /* we use n - 1 here because if the buffer is not big enough, the MS
-     * runtime libraries don't add a terminating zero at the end. MSDN
-     * recommends to provide _snprintf/_vsnprintf() a buffer size that
-     * is one less than the actual buffer, and zero it before calling
-     * _snprintf/_vsnprintf() to workaround this problem.
-     * See http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
-    memset(s, 0, n);
-    ret = vsnprintf(s, n - 1, fmt, ap);
-    if (ret == -1)
-        ret = n;
-
-    return ret;
-}
diff --git a/compat/snprintf.h b/compat/snprintf.h
deleted file mode 100644
index 60c198b7fc..0000000000
--- a/compat/snprintf.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * C99-compatible snprintf() and vsnprintf() implementations
- * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCOMPAT_SNPRINTF_H
-#define AVCOMPAT_SNPRINTF_H
-
-#include <stdarg.h>
-#include <stdio.h>
-
-/*
- * snprintf() on MSVCRT returns -1 (instead of required buffer length)
- * if the input buffer isn't big enough. Also, if the required buffer
- * length is exactly identical to the input buffer size, or if the
- * return value is -1 because the input buffer isn't big enough, MSVCRT
- * will fail to NULL-terminate the output buffer. vsnprintf() has the
- * same issue.
- *
- * Thus, provide our own fallback wrappers with correct behaviour.
- */
-#undef snprintf
-#define snprintf avpriv_snprintf
-int snprintf(char *restrict s, size_t n, const char *restrict format, ...);
-
-#undef vsnprintf
-#define vsnprintf avpriv_vsnprintf
-int vsnprintf(char *restrict s, size_t n, const char *restrict format, va_list ap);
-
-#endif /* AVCOMPAT_SNPRINTF_H */
diff --git a/compat/strtod.c b/compat/strtod.c
deleted file mode 100644
index 149d18aa92..0000000000
--- a/compat/strtod.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * C99-compatible strtod() implementation
- * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <ctype.h>
-#include <limits.h>
-
-#include "libavutil/avstring.h"
-#include "libavutil/mathematics.h"
-#include "strtod.h"
-
-static char *check_nan_suffix(char *s)
-{
-    char *start = s;
-
-    if (*s++ != '(')
-        return start;
-
-    while ((*s >= 'a' && *s <= 'z') || (*s >= 'A' && *s <= 'Z') ||
-           (*s >= '0' && *s <= '9') ||  *s == '_')
-        s++;
-
-    return *s == ')' ? s + 1 : start;
-}
-
-#undef strtod
-double avpriv_strtod(char *restrict nptr, char **restrict endptr)
-{
-    char *end;
-    double res;
-
-    /* Skip leading spaces */
-    while (isspace(*nptr))
-        nptr++;
-
-    if (!av_strncasecmp(nptr, "infinity", 8)) {
-        end = nptr + 8;
-        res = INFINITY;
-    } else if (!av_strncasecmp(nptr, "inf", 3)) {
-        end = nptr + 3;
-        res = INFINITY;
-    } else if (!av_strncasecmp(nptr, "+infinity", 9)) {
-        end = nptr + 9;
-        res = INFINITY;
-    } else if (!av_strncasecmp(nptr, "+inf", 4)) {
-        end = nptr + 4;
-        res = INFINITY;
-    } else if (!av_strncasecmp(nptr, "-infinity", 9)) {
-        end = nptr + 9;
-        res = -INFINITY;
-    } else if (!av_strncasecmp(nptr, "-inf", 4)) {
-        end = nptr + 4;
-        res = -INFINITY;
-    } else if (!av_strncasecmp(nptr, "nan", 3)) {
-        end = check_nan_suffix(nptr + 3);
-        res = NAN;
-    } else if (!av_strncasecmp(nptr, "+nan", 4) ||
-               !av_strncasecmp(nptr, "-nan", 4)) {
-        end = check_nan_suffix(nptr + 4);
-        res = NAN;
-    } else if (!av_strncasecmp(nptr, "0x", 2) ||
-               !av_strncasecmp(nptr, "-0x", 3) ||
-               !av_strncasecmp(nptr, "+0x", 3)) {
-        /* FIXME this doesn't handle exponents, non-integers (float/double)
-         * and numbers too large for long long */
-        res = strtoll(nptr, &end, 16);
-    } else {
-        res = strtod(nptr, &end);
-    }
-
-    if (endptr)
-        *endptr = end;
-
-    return res;
-}
diff --git a/compat/strtod.h b/compat/strtod.h
deleted file mode 100644
index 985bf4d16c..0000000000
--- a/compat/strtod.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * C99-compatible strtod() implementation
- * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVCOMPAT_STRTOD_H
-#define AVCOMPAT_STRTOD_H
-
-#include <stdlib.h>
-
-/*
- * strtod() on MSVCRT doesn't handle strings like 'inf' or 'nan'. Also,
- * it doesn't handle "0x" prefixes for hexadecimal input.
- *
- * Thus, provide our own fallback wrapper with correct behaviour.
- */
-#undef strtod
-#define strtod avpriv_strtod
-double strtod(char *restrict nptr, char **restrict endptr);
-
-#endif /* AVCOMPAT_STRTOD_H */
diff --git a/configure b/configure
index 0c16c67215..f0b0388ebb 100755
--- a/configure
+++ b/configure
@@ -1054,11 +1054,6 @@ cp_if_changed(){
     cp -f "$1" "$2"
 }
 
-force_include(){
-    flag=$(eval printf '%s%s\\n' '$FORCE_INC' $1)
-    append CFLAGS "$flag"
-}
-
 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
 # system-dependent things.
 
@@ -1268,7 +1263,6 @@ HAVE_LIST="
     asm_types_h
     attribute_may_alias
     attribute_packed
-    broken_strtod
     cbrtf
     clock_gettime
     closesocket
@@ -1355,7 +1349,6 @@ HAVE_LIST="
     setrlimit
     Sleep
     sndio_h
-    snprintf
     socklen_t
     soundcard_h
     strerror_r
@@ -2089,7 +2082,6 @@ CC_O='-o $@'
 CXX_C='-c'
 CXX_O='-o $@'
 LD_O='-o $@'
-FORCE_INC="-include"
 LD_LIB='-l%'
 LD_PATH='-L'
 HOSTCC_C='-c'
@@ -3438,7 +3430,6 @@ check_func  mmap
 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
 check_func  setrlimit
-check_func  snprintf
 check_func  strerror_r
 check_func  sched_getaffinity
 check_func  sysconf
@@ -3458,15 +3449,6 @@ check_func_headers windows.h Sleep
 check_func_headers windows.h VirtualAlloc
 check_func_headers glob.h glob
 
-# Check for MSVCRT; it has a broken strtod() that can't parse some input.
-# Use old dos symbol to detect it. If we are on mingw, it already provides
-# its own replacement and we don't need to redo that.
-if check_func _get_doserrno; then
-    if test $target_os != mingw32; then
-        enable broken_strtod
-    fi
-fi
-
 check_header dlfcn.h
 check_header dxva.h
 check_header dxva2api.h -D_WIN32_WINNT=0x0600
@@ -3838,14 +3820,6 @@ elif enabled pathscale; then
     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
 fi
 
-# If a missing snprintf/broken strtod is detected, force-include headers
-# that override prototypes and define it to a prefixed one implemented in
-# libavutil. We do this at the end since -I flags aren't set in configure,
-# and any additional check_cflags() beyond here will thus fail (because
-# it can't find these files, because the -I$(srcdir) wasn't set).
-enabled snprintf || force_include compat/snprintf.h
-enabled broken_strtod && force_include compat/strtod.h
-
 enabled_any $THREADS_LIST      && enable threads
 
 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
diff --git a/libavutil/Makefile b/libavutil/Makefile
index bd569ecb05..ef1f658bb4 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -94,9 +94,6 @@ OBJS = adler32.o                                                        \
        utils.o                                                          \
        xtea.o                                                           \
 
-OBJS-$(!HAVE_SNPRINTF) += ../compat/snprintf.o
-OBJS-$(HAVE_BROKEN_STRTOD) += ../compat/strtod.o
-
 TESTPROGS = adler32                                                     \
             aes                                                         \
             avstring                                                    \