chasing indexing error

1 files changed, 0 insertions, 381 deletions

diff --git a/ffmpeg/libavutil/bprint.c b/ffmpeg/libavutil/bprint.c
deleted file mode 100644
index 7786e3b..0000000
--- a/ffmpeg/libavutil/bprint.c
+++ /dev/null
@@ -1,381 +0,0 @@
-/*
- * Copyright (c) 2012 Nicolas George
- *
- * 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 <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include "avassert.h"
-#include "avstring.h"
-#include "bprint.h"
-#include "common.h"
-#include "compat/va_copy.h"
-#include "error.h"
-#include "mem.h"
-
-#define av_bprint_room(buf) ((buf)->size - FFMIN((buf)->len, (buf)->size))
-#define av_bprint_is_allocated(buf) ((buf)->str != (buf)->reserved_internal_buffer)
-
-static int av_bprint_alloc(AVBPrint *buf, unsigned room)
-{
-    char *old_str, *new_str;
-    unsigned min_size, new_size;
-
-    if (buf->size == buf->size_max)
-        return AVERROR(EIO);
-    if (!av_bprint_is_complete(buf))
-        return AVERROR_INVALIDDATA; /* it is already truncated anyway */
-    min_size = buf->len + 1 + FFMIN(UINT_MAX - buf->len - 1, room);
-    new_size = buf->size > buf->size_max / 2 ? buf->size_max : buf->size * 2;
-    if (new_size < min_size)
-        new_size = FFMIN(buf->size_max, min_size);
-    old_str = av_bprint_is_allocated(buf) ? buf->str : NULL;
-    new_str = av_realloc(old_str, new_size);
-    if (!new_str)
-        return AVERROR(ENOMEM);
-    if (!old_str)
-        memcpy(new_str, buf->str, buf->len + 1);
-    buf->str  = new_str;
-    buf->size = new_size;
-    return 0;
-}
-
-static void av_bprint_grow(AVBPrint *buf, unsigned extra_len)
-{
-    /* arbitrary margin to avoid small overflows */
-    extra_len = FFMIN(extra_len, UINT_MAX - 5 - buf->len);
-    buf->len += extra_len;
-    if (buf->size)
-        buf->str[FFMIN(buf->len, buf->size - 1)] = 0;
-}
-
-void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
-{
-    unsigned size_auto = (char *)buf + sizeof(*buf) -
-                         buf->reserved_internal_buffer;
-
-    if (size_max == 1)
-        size_max = size_auto;
-    buf->str      = buf->reserved_internal_buffer;
-    buf->len      = 0;
-    buf->size     = FFMIN(size_auto, size_max);
-    buf->size_max = size_max;
-    *buf->str = 0;
-    if (size_init > buf->size)
-        av_bprint_alloc(buf, size_init - 1);
-}
-
-void av_bprint_init_for_buffer(AVBPrint *buf, char *buffer, unsigned size)
-{
-    buf->str      = buffer;
-    buf->len      = 0;
-    buf->size     = size;
-    buf->size_max = size;
-    *buf->str = 0;
-}
-
-void av_bprintf(AVBPrint *buf, const char *fmt, ...)
-{
-    unsigned room;
-    char *dst;
-    va_list vl;
-    int extra_len;
-
-    while (1) {
-        room = av_bprint_room(buf);
-        dst = room ? buf->str + buf->len : NULL;
-        va_start(vl, fmt);
-        extra_len = vsnprintf(dst, room, fmt, vl);
-        va_end(vl);
-        if (extra_len <= 0)
-            return;
-        if (extra_len < room)
-            break;
-        if (av_bprint_alloc(buf, extra_len))
-            break;
-    }
-    av_bprint_grow(buf, extra_len);
-}
-
-void av_vbprintf(AVBPrint *buf, const char *fmt, va_list vl_arg)
-{
-    unsigned room;
-    char *dst;
-    int extra_len;
-    va_list vl;
-
-    while (1) {
-        room = av_bprint_room(buf);
-        dst = room ? buf->str + buf->len : NULL;
-        va_copy(vl, vl_arg);
-        extra_len = vsnprintf(dst, room, fmt, vl);
-        va_end(vl);
-        if (extra_len <= 0)
-            return;
-        if (extra_len < room)
-            break;
-        if (av_bprint_alloc(buf, extra_len))
-            break;
-    }
-    av_bprint_grow(buf, extra_len);
-}
-
-void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
-{
-    unsigned room, real_n;
-
-    while (1) {
-        room = av_bprint_room(buf);
-        if (n < room)
-            break;
-        if (av_bprint_alloc(buf, n))
-            break;
-    }
-    if (room) {
-        real_n = FFMIN(n, room - 1);
-        memset(buf->str + buf->len, c, real_n);
-    }
-    av_bprint_grow(buf, n);
-}
-
-void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
-{
-    unsigned room, real_n;
-
-    while (1) {
-        room = av_bprint_room(buf);
-        if (size < room)
-            break;
-        if (av_bprint_alloc(buf, size))
-            break;
-    }
-    if (room) {
-        real_n = FFMIN(size, room - 1);
-        memcpy(buf->str + buf->len, data, real_n);
-    }
-    av_bprint_grow(buf, size);
-}
-
-void av_bprint_strftime(AVBPrint *buf, const char *fmt, const struct tm *tm)
-{
-    unsigned room;
-    size_t l;
-
-    if (!*fmt)
-        return;
-    while (1) {
-        room = av_bprint_room(buf);
-        if (room && (l = strftime(buf->str + buf->len, room, fmt, tm)))
-            break;
-        /* strftime does not tell us how much room it would need: let us
-           retry with twice as much until the buffer is large enough */
-        room = !room ? strlen(fmt) + 1 :
-               room <= INT_MAX / 2 ? room * 2 : INT_MAX;
-        if (av_bprint_alloc(buf, room)) {
-            /* impossible to grow, try to manage something useful anyway */
-            room = av_bprint_room(buf);
-            if (room < 1024) {
-                /* if strftime fails because the buffer has (almost) reached
-                   its maximum size, let us try in a local buffer; 1k should
-                   be enough to format any real date+time string */
-                char buf2[1024];
-                if ((l = strftime(buf2, sizeof(buf2), fmt, tm))) {
-                    av_bprintf(buf, "%s", buf2);
-                    return;
-                }
-            }
-            if (room) {
-                /* if anything else failed and the buffer is not already
-                   truncated, let us add a stock string and force truncation */
-                static const char txt[] = "[truncated strftime output]";
-                memset(buf->str + buf->len, '!', room);
-                memcpy(buf->str + buf->len, txt, FFMIN(sizeof(txt) - 1, room));
-                av_bprint_grow(buf, room); /* force truncation */
-            }
-            return;
-        }
-    }
-    av_bprint_grow(buf, l);
-}
-
-void av_bprint_get_buffer(AVBPrint *buf, unsigned size,
-                          unsigned char **mem, unsigned *actual_size)
-{
-    if (size > av_bprint_room(buf))
-        av_bprint_alloc(buf, size);
-    *actual_size = av_bprint_room(buf);
-    *mem = *actual_size ? buf->str + buf->len : NULL;
-}
-
-void av_bprint_clear(AVBPrint *buf)
-{
-    if (buf->len) {
-        *buf->str = 0;
-        buf->len  = 0;
-    }
-}
-
-int av_bprint_finalize(AVBPrint *buf, char **ret_str)
-{
-    unsigned real_size = FFMIN(buf->len + 1, buf->size);
-    char *str;
-    int ret = 0;
-
-    if (ret_str) {
-        if (av_bprint_is_allocated(buf)) {
-            str = av_realloc(buf->str, real_size);
-            if (!str)
-                str = buf->str;
-            buf->str = NULL;
-        } else {
-            str = av_malloc(real_size);
-            if (str)
-                memcpy(str, buf->str, real_size);
-            else
-                ret = AVERROR(ENOMEM);
-        }
-        *ret_str = str;
-    } else {
-        if (av_bprint_is_allocated(buf))
-            av_freep(&buf->str);
-    }
-    buf->size = real_size;
-    return ret;
-}
-
-#define WHITESPACES " \n\t"
-
-void av_bprint_escape(AVBPrint *dstbuf, const char *src, const char *special_chars,
-                      enum AVEscapeMode mode, int flags)
-{
-    const char *src0 = src;
-
-    if (mode == AV_ESCAPE_MODE_AUTO)
-        mode = AV_ESCAPE_MODE_BACKSLASH; /* TODO: implement a heuristic */
-
-    switch (mode) {
-    case AV_ESCAPE_MODE_QUOTE:
-        /* enclose the string between '' */
-        av_bprint_chars(dstbuf, '\'', 1);
-        for (; *src; src++) {
-            if (*src == '\'')
-                av_bprintf(dstbuf, "'\\''");
-            else
-                av_bprint_chars(dstbuf, *src, 1);
-        }
-        av_bprint_chars(dstbuf, '\'', 1);
-        break;
-
-    /* case AV_ESCAPE_MODE_BACKSLASH or unknown mode */
-    default:
-        /* \-escape characters */
-        for (; *src; src++) {
-            int is_first_last       = src == src0 || !*(src+1);
-            int is_ws               = !!strchr(WHITESPACES, *src);
-            int is_strictly_special = special_chars && strchr(special_chars, *src);
-            int is_special          =
-                is_strictly_special || strchr("'\\", *src) ||
-                (is_ws && (flags & AV_ESCAPE_FLAG_WHITESPACE));
-
-            if (is_strictly_special ||
-                (!(flags & AV_ESCAPE_FLAG_STRICT) &&
-                 (is_special || (is_ws && is_first_last))))
-                av_bprint_chars(dstbuf, '\\', 1);
-            av_bprint_chars(dstbuf, *src, 1);
-        }
-        break;
-    }
-}
-
-#ifdef TEST
-
-#undef printf
-
-static void bprint_pascal(AVBPrint *b, unsigned size)
-{
-    unsigned i, j;
-    unsigned p[42];
-
-    av_assert0(size < FF_ARRAY_ELEMS(p));
-
-    p[0] = 1;
-    av_bprintf(b, "%8d\n", 1);
-    for (i = 1; i <= size; i++) {
-        p[i] = 1;
-        for (j = i - 1; j > 0; j--)
-            p[j] = p[j] + p[j - 1];
-        for (j = 0; j <= i; j++)
-            av_bprintf(b, "%8d", p[j]);
-        av_bprintf(b, "\n");
-    }
-}
-
-int main(void)
-{
-    AVBPrint b;
-    char buf[256];
-    struct tm testtime = { .tm_year = 100, .tm_mon = 11, .tm_mday = 20 };
-
-    av_bprint_init(&b, 0, -1);
-    bprint_pascal(&b, 5);
-    printf("Short text in unlimited buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
-    printf("%s\n", b.str);
-    av_bprint_finalize(&b, NULL);
-
-    av_bprint_init(&b, 0, -1);
-    bprint_pascal(&b, 25);
-    printf("Long text in unlimited buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
-    av_bprint_finalize(&b, NULL);
-
-    av_bprint_init(&b, 0, 2048);
-    bprint_pascal(&b, 25);
-    printf("Long text in limited buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
-    av_bprint_finalize(&b, NULL);
-
-    av_bprint_init(&b, 0, 1);
-    bprint_pascal(&b, 5);
-    printf("Short text in automatic buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
-
-    av_bprint_init(&b, 0, 1);
-    bprint_pascal(&b, 25);
-    printf("Long text in automatic buffer: %u/%u\n", (unsigned)strlen(b.str)/8*8, b.len);
-    /* Note that the size of the automatic buffer is arch-dependant. */
-
-    av_bprint_init(&b, 0, 0);
-    bprint_pascal(&b, 25);
-    printf("Long text count only buffer: %u/%u\n", (unsigned)strlen(b.str), b.len);
-
-    av_bprint_init_for_buffer(&b, buf, sizeof(buf));
-    bprint_pascal(&b, 25);
-    printf("Long text count only buffer: %u/%u\n", (unsigned)strlen(buf), b.len);
-
-    av_bprint_init(&b, 0, -1);
-    av_bprint_strftime(&b, "%Y-%m-%d", &testtime);
-    printf("strftime full: %u/%u \"%s\"\n", (unsigned)strlen(buf), b.len, b.str);
-    av_bprint_finalize(&b, NULL);
-
-    av_bprint_init(&b, 0, 8);
-    av_bprint_strftime(&b, "%Y-%m-%d", &testtime);
-    printf("strftime truncated: %u/%u \"%s\"\n", (unsigned)strlen(buf), b.len, b.str);
-
-    return 0;
-}
-
-#endif